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Remove 'type' argument from access_ok() function

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Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument
of the user address range verification function since we got rid of the
old racy i386-only code to walk page tables by hand.

It existed because the original 80386 would not honor the write protect
bit when in kernel mode, so you had to do COW by hand before doing any
user access.  But we haven't supported that in a long time, and these
days the 'type' argument is a purely historical artifact.

A discussion about extending 'user_access_begin()' to do the range
checking resulted this patch, because there is no way we're going to
move the old VERIFY_xyz interface to that model.  And it's best done at
the end of the merge window when I've done most of my merges, so let's
just get this done once and for all.

This patch was mostly done with a sed-script, with manual fix-ups for
the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form.

There were a couple of notable cases:

 - csky still had the old "verify_area()" name as an alias.

 - the iter_iov code had magical hardcoded knowledge of the actual
   values of VERIFY_{READ,WRITE} (not that they mattered, since nothing
   really used it)

 - microblaze used the type argument for a debug printout

but other than those oddities this should be a total no-op patch.

I tried to fix up all architectures, did fairly extensive grepping for
access_ok() uses, and the changes are trivial, but I may have missed
something.  Any missed conversion should be trivially fixable, though.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2019-01-03 18:57:57 -08:00
parent 135143b2ca
commit 96d4f267e4
221 changed files with 610 additions and 679 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/alpha/include/asm/futex.h
View File

@ -68,7 +68,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
int ret = 0, cmp;
u32 prev;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
__asm__ __volatile__ (

2
arch/alpha/include/asm/uaccess.h
View File

@ -36,7 +36,7 @@
#define __access_ok(addr, size) \
((get_fs().seg & (addr | size | (addr+size))) == 0)
#define access_ok(type, addr, size) \
#define access_ok(addr, size) \
({ \
__chk_user_ptr(addr); \
__access_ok(((unsigned long)(addr)), (size)); \

12
arch/alpha/kernel/signal.c
View File

@ -65,7 +65,7 @@ SYSCALL_DEFINE3(osf_sigaction, int, sig,
if (act) {
old_sigset_t mask;
if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
if (!access_ok(act, sizeof(*act)) ||
__get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
__get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
__get_user(mask, &act->sa_mask))
@ -77,7 +77,7 @@ SYSCALL_DEFINE3(osf_sigaction, int, sig,
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
if (!access_ok(oact, sizeof(*oact)) ||
__put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
__put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
__put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
@ -207,7 +207,7 @@ do_sigreturn(struct sigcontext __user *sc)
sigset_t set;
/* Verify that it's a good sigcontext before using it */
if (!access_ok(VERIFY_READ, sc, sizeof(*sc)))
if (!access_ok(sc, sizeof(*sc)))
goto give_sigsegv;
if (__get_user(set.sig[0], &sc->sc_mask))
goto give_sigsegv;
@ -235,7 +235,7 @@ do_rt_sigreturn(struct rt_sigframe __user *frame)
sigset_t set;
/* Verify that it's a good ucontext_t before using it */
if (!access_ok(VERIFY_READ, &frame->uc, sizeof(frame->uc)))
if (!access_ok(&frame->uc, sizeof(frame->uc)))
goto give_sigsegv;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto give_sigsegv;
@ -332,7 +332,7 @@ setup_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
oldsp = rdusp();
frame = get_sigframe(ksig, oldsp, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
return -EFAULT;
err |= setup_sigcontext(&frame->sc, regs, set->sig[0], oldsp);
@ -377,7 +377,7 @@ setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
oldsp = rdusp();
frame = get_sigframe(ksig, oldsp, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
return -EFAULT;
err |= copy_siginfo_to_user(&frame->info, &ksig->info);

2
arch/alpha/lib/csum_partial_copy.c
View File

@ -333,7 +333,7 @@ csum_partial_copy_from_user(const void __user *src, void *dst, int len,
unsigned long doff = 7 & (unsigned long) dst;
if (len) {
if (!access_ok(VERIFY_READ, src, len)) {
if (!access_ok(src, len)) {
if (errp) *errp = -EFAULT;
memset(dst, 0, len);
return sum;

2
arch/arc/include/asm/futex.h
View File

@ -126,7 +126,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, u32 expval,
int ret = 0;
u32 existval;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
#ifndef CONFIG_ARC_HAS_LLSC

2
arch/arc/kernel/process.c
View File

@ -61,7 +61,7 @@ SYSCALL_DEFINE3(arc_usr_cmpxchg, int *, uaddr, int, expected, int, new)
/* Z indicates to userspace if operation succeded */
regs->status32 &= ~STATUS_Z_MASK;
ret = access_ok(VERIFY_WRITE, uaddr, sizeof(*uaddr));
ret = access_ok(uaddr, sizeof(*uaddr));
if (!ret)
goto fail;

4
arch/arc/kernel/signal.c
View File

@ -169,7 +169,7 @@ SYSCALL_DEFINE0(rt_sigreturn)
sf = (struct rt_sigframe __force __user *)(regs->sp);
if (!access_ok(VERIFY_READ, sf, sizeof(*sf)))
if (!access_ok(sf, sizeof(*sf)))
goto badframe;
if (__get_user(magic, &sf->sigret_magic))
@ -219,7 +219,7 @@ static inline void __user *get_sigframe(struct ksignal *ksig,
frame = (void __user *)((sp - framesize) & ~7);
/* Check that we can actually write to the signal frame */
if (!access_ok(VERIFY_WRITE, frame, framesize))
if (!access_ok(frame, framesize))
frame = NULL;
return frame;

4
arch/arm/include/asm/futex.h
View File

@ -50,7 +50,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
int ret;
u32 val;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
smp_mb();
@ -104,7 +104,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
int ret = 0;
u32 val;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
preempt_disable();

4
arch/arm/include/asm/uaccess.h
View File

@ -279,7 +279,7 @@ static inline void set_fs(mm_segment_t fs)
#endif /* CONFIG_MMU */
#define access_ok(type, addr, size) (__range_ok(addr, size) == 0)
#define access_ok(addr, size) (__range_ok(addr, size) == 0)
#define user_addr_max() \
(uaccess_kernel() ? ~0UL : get_fs())
@ -560,7 +560,7 @@ raw_copy_to_user(void __user *to, const void *from, unsigned long n)
static inline unsigned long __must_check clear_user(void __user *to, unsigned long n)
{
if (access_ok(VERIFY_WRITE, to, n))
if (access_ok(to, n))
n = __clear_user(to, n);
return n;
}

2
arch/arm/kernel/perf_callchain.c
View File

@ -37,7 +37,7 @@ user_backtrace(struct frame_tail __user *tail,
struct frame_tail buftail;
unsigned long err;
if (!access_ok(VERIFY_READ, tail, sizeof(buftail)))
if (!access_ok(tail, sizeof(buftail)))
return NULL;
pagefault_disable();

6
arch/arm/kernel/signal.c
View File

@ -241,7 +241,7 @@ asmlinkage int sys_sigreturn(struct pt_regs *regs)
frame = (struct sigframe __user *)regs->ARM_sp;
if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
if (!access_ok(frame, sizeof (*frame)))
goto badframe;
if (restore_sigframe(regs, frame))
@ -271,7 +271,7 @@ asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
frame = (struct rt_sigframe __user *)regs->ARM_sp;
if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
if (!access_ok(frame, sizeof (*frame)))
goto badframe;
if (restore_sigframe(regs, &frame->sig))
@ -355,7 +355,7 @@ get_sigframe(struct ksignal *ksig, struct pt_regs *regs, int framesize)
/*
* Check that we can actually write to the signal frame.
*/
if (!access_ok(VERIFY_WRITE, frame, framesize))
if (!access_ok(frame, framesize))
frame = NULL;
return frame;

2
arch/arm/kernel/swp_emulate.c
View File

@ -198,7 +198,7 @@ static int swp_handler(struct pt_regs *regs, unsigned int instr)
destreg, EXTRACT_REG_NUM(instr, RT2_OFFSET), data);
/* Check access in reasonable access range for both SWP and SWPB */
if (!access_ok(VERIFY_WRITE, (address & ~3), 4)) {
if (!access_ok((address & ~3), 4)) {
pr_debug("SWP{B} emulation: access to %p not allowed!\n",
(void *)address);
res = -EFAULT;

4
arch/arm/kernel/sys_oabi-compat.c
View File

@ -285,7 +285,7 @@ asmlinkage long sys_oabi_epoll_wait(int epfd,
maxevents > (INT_MAX/sizeof(*kbuf)) ||
maxevents > (INT_MAX/sizeof(*events)))
return -EINVAL;
if (!access_ok(VERIFY_WRITE, events, sizeof(*events) * maxevents))
if (!access_ok(events, sizeof(*events) * maxevents))
return -EFAULT;
kbuf = kmalloc_array(maxevents, sizeof(*kbuf), GFP_KERNEL);
if (!kbuf)
@ -326,7 +326,7 @@ asmlinkage long sys_oabi_semtimedop(int semid,
if (nsops < 1 || nsops > SEMOPM)
return -EINVAL;
if (!access_ok(VERIFY_READ, tsops, sizeof(*tsops) * nsops))
if (!access_ok(tsops, sizeof(*tsops) * nsops))
return -EFAULT;
sops = kmalloc_array(nsops, sizeof(*sops), GFP_KERNEL);
if (!sops)

2
arch/arm/kernel/traps.c
View File

@ -582,7 +582,7 @@ do_cache_op(unsigned long start, unsigned long end, int flags)
if (end < start || flags)
return -EINVAL;
if (!access_ok(VERIFY_READ, start, end - start))
if (!access_ok(start, end - start))
return -EFAULT;
return __do_cache_op(start, end);

2
arch/arm/oprofile/common.c
View File

@ -88,7 +88,7 @@ static struct frame_tail* user_backtrace(struct frame_tail *tail)
struct frame_tail buftail[2];
/* Also check accessibility of one struct frame_tail beyond */
if (!access_ok(VERIFY_READ, tail, sizeof(buftail)))
if (!access_ok(tail, sizeof(buftail)))
return NULL;
if (__copy_from_user_inatomic(buftail, tail, sizeof(buftail)))
return NULL;

2
arch/arm64/include/asm/futex.h
View File

@ -96,7 +96,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *_uaddr,
u32 val, tmp;
u32 __user *uaddr;
if (!access_ok(VERIFY_WRITE, _uaddr, sizeof(u32)))
if (!access_ok(_uaddr, sizeof(u32)))
return -EFAULT;
uaddr = __uaccess_mask_ptr(_uaddr);

8
arch/arm64/include/asm/uaccess.h
View File

@ -95,7 +95,7 @@ static inline unsigned long __range_ok(const void __user *addr, unsigned long si
return ret;
}
#define access_ok(type, addr, size) __range_ok(addr, size)
#define access_ok(addr, size) __range_ok(addr, size)
#define user_addr_max get_fs
#define _ASM_EXTABLE(from, to) \
@ -301,7 +301,7 @@ do { \
({ \
__typeof__(*(ptr)) __user *__p = (ptr); \
might_fault(); \
if (access_ok(VERIFY_READ, __p, sizeof(*__p))) { \
if (access_ok(__p, sizeof(*__p))) { \
__p = uaccess_mask_ptr(__p); \
__get_user_err((x), __p, (err)); \
} else { \
@ -370,7 +370,7 @@ do { \
({ \
__typeof__(*(ptr)) __user *__p = (ptr); \
might_fault(); \
if (access_ok(VERIFY_WRITE, __p, sizeof(*__p))) { \
if (access_ok(__p, sizeof(*__p))) { \
__p = uaccess_mask_ptr(__p); \
__put_user_err((x), __p, (err)); \
} else { \
@ -418,7 +418,7 @@ extern unsigned long __must_check __arch_copy_in_user(void __user *to, const voi
extern unsigned long __must_check __arch_clear_user(void __user *to, unsigned long n);
static inline unsigned long __must_check __clear_user(void __user *to, unsigned long n)
{
if (access_ok(VERIFY_WRITE, to, n))
if (access_ok(to, n))
n = __arch_clear_user(__uaccess_mask_ptr(to), n);
return n;
}

2
arch/arm64/kernel/armv8_deprecated.c
View File

@ -402,7 +402,7 @@ static int swp_handler(struct pt_regs *regs, u32 instr)
/* Check access in reasonable access range for both SWP and SWPB */
user_ptr = (const void __user *)(unsigned long)(address & ~3);
if (!access_ok(VERIFY_WRITE, user_ptr, 4)) {
if (!access_ok(user_ptr, 4)) {
pr_debug("SWP{B} emulation: access to 0x%08x not allowed!\n",
address);
goto fault;

4
arch/arm64/kernel/perf_callchain.c
View File

@ -39,7 +39,7 @@ user_backtrace(struct frame_tail __user *tail,
unsigned long lr;
/* Also check accessibility of one struct frame_tail beyond */
if (!access_ok(VERIFY_READ, tail, sizeof(buftail)))
if (!access_ok(tail, sizeof(buftail)))
return NULL;
pagefault_disable();
@ -86,7 +86,7 @@ compat_user_backtrace(struct compat_frame_tail __user *tail,
unsigned long err;
/* Also check accessibility of one struct frame_tail beyond */
if (!access_ok(VERIFY_READ, tail, sizeof(buftail)))
if (!access_ok(tail, sizeof(buftail)))
return NULL;
pagefault_disable();

6
arch/arm64/kernel/signal.c
View File

@ -470,7 +470,7 @@ static int parse_user_sigframe(struct user_ctxs *user,
offset = 0;
limit = extra_size;
if (!access_ok(VERIFY_READ, base, limit))
if (!access_ok(base, limit))
goto invalid;
continue;
@ -556,7 +556,7 @@ SYSCALL_DEFINE0(rt_sigreturn)
frame = (struct rt_sigframe __user *)regs->sp;
if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
if (!access_ok(frame, sizeof (*frame)))
goto badframe;
if (restore_sigframe(regs, frame))
@ -730,7 +730,7 @@ static int get_sigframe(struct rt_sigframe_user_layout *user,
/*
* Check that we can actually write to the signal frame.
*/
if (!access_ok(VERIFY_WRITE, user->sigframe, sp_top - sp))
if (!access_ok(user->sigframe, sp_top - sp))
return -EFAULT;
return 0;

6
arch/arm64/kernel/signal32.c
View File

@ -303,7 +303,7 @@ COMPAT_SYSCALL_DEFINE0(sigreturn)
frame = (struct compat_sigframe __user *)regs->compat_sp;
if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
if (!access_ok(frame, sizeof (*frame)))
goto badframe;
if (compat_restore_sigframe(regs, frame))
@ -334,7 +334,7 @@ COMPAT_SYSCALL_DEFINE0(rt_sigreturn)
frame = (struct compat_rt_sigframe __user *)regs->compat_sp;
if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
if (!access_ok(frame, sizeof (*frame)))
goto badframe;
if (compat_restore_sigframe(regs, &frame->sig))
@ -365,7 +365,7 @@ static void __user *compat_get_sigframe(struct ksignal *ksig,
/*
* Check that we can actually write to the signal frame.
*/
if (!access_ok(VERIFY_WRITE, frame, framesize))
if (!access_ok(frame, framesize))
frame = NULL;
return frame;

2
arch/arm64/kernel/sys_compat.c
View File

@ -58,7 +58,7 @@ do_compat_cache_op(unsigned long start, unsigned long end, int flags)
if (end < start || flags)
return -EINVAL;
if (!access_ok(VERIFY_READ, (const void __user *)start, end - start))
if (!access_ok((const void __user *)start, end - start))
return -EFAULT;
return __do_compat_cache_op(start, end);

4
arch/c6x/kernel/signal.c
View File

@ -80,7 +80,7 @@ asmlinkage int do_rt_sigreturn(struct pt_regs *regs)
frame = (struct rt_sigframe __user *) ((unsigned long) regs->sp + 8);
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto badframe;
@ -149,7 +149,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
frame = get_sigframe(ksig, regs, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
return -EFAULT;
err |= __put_user(&frame->info, &frame->pinfo);

4
arch/csky/abiv1/alignment.c
View File

@ -32,7 +32,7 @@ static int ldb_asm(uint32_t addr, uint32_t *valp)
uint32_t val;
int err;
if (!access_ok(VERIFY_READ, (void *)addr, 1))
if (!access_ok((void *)addr, 1))
return 1;
asm volatile (
@ -67,7 +67,7 @@ static int stb_asm(uint32_t addr, uint32_t val)
{
int err;
if (!access_ok(VERIFY_WRITE, (void *)addr, 1))
if (!access_ok((void *)addr, 1))
return 1;
asm volatile (

16
arch/csky/include/asm/uaccess.h
View File

@ -16,10 +16,7 @@
#include <linux/version.h>
#include <asm/segment.h>
#define VERIFY_READ 0
#define VERIFY_WRITE 1
static inline int access_ok(int type, const void *addr, unsigned long size)
static inline int access_ok(const void *addr, unsigned long size)
{
unsigned long limit = current_thread_info()->addr_limit.seg;
@ -27,12 +24,7 @@ static inline int access_ok(int type, const void *addr, unsigned long size)
((unsigned long)(addr + size) < limit));
}
static inline int verify_area(int type, const void *addr, unsigned long size)
{
return access_ok(type, addr, size) ? 0 : -EFAULT;
}
#define __addr_ok(addr) (access_ok(VERIFY_READ, addr, 0))
#define __addr_ok(addr) (access_ok(addr, 0))
extern int __put_user_bad(void);
@ -91,7 +83,7 @@ extern int __put_user_bad(void);
long __pu_err = -EFAULT; \
typeof(*(ptr)) *__pu_addr = (ptr); \
typeof(*(ptr)) __pu_val = (typeof(*(ptr)))(x); \
if (access_ok(VERIFY_WRITE, __pu_addr, size) && __pu_addr) \
if (access_ok(__pu_addr, size) && __pu_addr) \
__put_user_size(__pu_val, __pu_addr, (size), __pu_err); \
__pu_err; \
})
@ -217,7 +209,7 @@ do { \
({ \
int __gu_err = -EFAULT; \
const __typeof__(*(ptr)) __user *__gu_ptr = (ptr); \
if (access_ok(VERIFY_READ, __gu_ptr, size) && __gu_ptr) \
if (access_ok(__gu_ptr, size) && __gu_ptr) \
__get_user_size(x, __gu_ptr, size, __gu_err); \
__gu_err; \
})

2
arch/csky/kernel/signal.c
View File

@ -88,7 +88,7 @@ do_rt_sigreturn(void)
struct pt_regs *regs = current_pt_regs();
struct rt_sigframe *frame = (struct rt_sigframe *)(regs->usp);
if (verify_area(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto badframe;

8
arch/csky/lib/usercopy.c
View File

@ -7,7 +7,7 @@
unsigned long raw_copy_from_user(void *to, const void *from,
unsigned long n)
{
if (access_ok(VERIFY_READ, from, n))
if (access_ok(from, n))
__copy_user_zeroing(to, from, n);
else
memset(to, 0, n);
@ -18,7 +18,7 @@ EXPORT_SYMBOL(raw_copy_from_user);
unsigned long raw_copy_to_user(void *to, const void *from,
unsigned long n)
{
if (access_ok(VERIFY_WRITE, to, n))
if (access_ok(to, n))
__copy_user(to, from, n);
return n;
}
@ -113,7 +113,7 @@ long strncpy_from_user(char *dst, const char *src, long count)
{
long res = -EFAULT;
if (access_ok(VERIFY_READ, src, 1))
if (access_ok(src, 1))
__do_strncpy_from_user(dst, src, count, res);
return res;
}
@ -236,7 +236,7 @@ do { \
unsigned long
clear_user(void __user *to, unsigned long n)
{
if (access_ok(VERIFY_WRITE, to, n))
if (access_ok(to, n))
__do_clear_user(to, n);
return n;
}

4
arch/h8300/kernel/signal.c
View File

@ -110,7 +110,7 @@ asmlinkage int sys_rt_sigreturn(void)
sigset_t set;
int er0;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto badframe;
@ -165,7 +165,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
frame = get_sigframe(ksig, regs, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
return -EFAULT;
if (ksig->ka.sa.sa_flags & SA_SIGINFO)

2
arch/hexagon/include/asm/futex.h
View File

@ -77,7 +77,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, u32 oldval,
int prev;
int ret;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
__asm__ __volatile__ (

3
arch/hexagon/include/asm/uaccess.h
View File

@ -29,9 +29,6 @@
/*
* access_ok: - Checks if a user space pointer is valid
* @type: Type of access: %VERIFY_READ or %VERIFY_WRITE. Note that
* %VERIFY_WRITE is a superset of %VERIFY_READ - if it is safe
* to write to a block, it is always safe to read from it.
* @addr: User space pointer to start of block to check
* @size: Size of block to check
*

4
arch/hexagon/kernel/signal.c
View File

@ -115,7 +115,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
frame = get_sigframe(ksig, regs, sizeof(struct rt_sigframe));
if (!access_ok(VERIFY_WRITE, frame, sizeof(struct rt_sigframe)))
if (!access_ok(frame, sizeof(struct rt_sigframe)))
return -EFAULT;
if (copy_siginfo_to_user(&frame->info, &ksig->info))
@ -244,7 +244,7 @@ asmlinkage int sys_rt_sigreturn(void)
current->restart_block.fn = do_no_restart_syscall;
frame = (struct rt_sigframe __user *)pt_psp(regs);
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&blocked, &frame->uc.uc_sigmask, sizeof(blocked)))
goto badframe;

2
arch/hexagon/mm/uaccess.c
View File

@ -51,7 +51,7 @@ __kernel_size_t __clear_user_hexagon(void __user *dest, unsigned long count)
unsigned long clear_user_hexagon(void __user *dest, unsigned long count)
{
if (!access_ok(VERIFY_WRITE, dest, count))
if (!access_ok(dest, count))
return count;
else
return __clear_user_hexagon(dest, count);

2
arch/ia64/include/asm/futex.h
View File

@ -86,7 +86,7 @@ static inline int
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
{

2
arch/ia64/include/asm/uaccess.h
View File

@ -67,7 +67,7 @@ static inline int __access_ok(const void __user *p, unsigned long size)
return likely(addr <= seg) &&
(seg == KERNEL_DS.seg || likely(REGION_OFFSET(addr) < RGN_MAP_LIMIT));
}
#define access_ok(type, addr, size) __access_ok((addr), (size))
#define access_ok(addr, size) __access_ok((addr), (size))
/*
* These are the main single-value transfer routines. They automatically

4
arch/ia64/kernel/ptrace.c
View File

@ -836,7 +836,7 @@ ptrace_getregs (struct task_struct *child, struct pt_all_user_regs __user *ppr)
char nat = 0;
int i;
if (!access_ok(VERIFY_WRITE, ppr, sizeof(struct pt_all_user_regs)))
if (!access_ok(ppr, sizeof(struct pt_all_user_regs)))
return -EIO;
pt = task_pt_regs(child);
@ -981,7 +981,7 @@ ptrace_setregs (struct task_struct *child, struct pt_all_user_regs __user *ppr)
memset(&fpval, 0, sizeof(fpval));
if (!access_ok(VERIFY_READ, ppr, sizeof(struct pt_all_user_regs)))
if (!access_ok(ppr, sizeof(struct pt_all_user_regs)))
return -EIO;
pt = task_pt_regs(child);

4
arch/ia64/kernel/signal.c
View File

@ -132,7 +132,7 @@ ia64_rt_sigreturn (struct sigscratch *scr)
*/
retval = (long) &ia64_strace_leave_kernel;
if (!access_ok(VERIFY_READ, sc, sizeof(*sc)))
if (!access_ok(sc, sizeof(*sc)))
goto give_sigsegv;
if (GET_SIGSET(&set, &sc->sc_mask))
@ -264,7 +264,7 @@ setup_frame(struct ksignal *ksig, sigset_t *set, struct sigscratch *scr)
}
frame = (void __user *) ((new_sp - sizeof(*frame)) & -STACK_ALIGN);
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) {
if (!access_ok(frame, sizeof(*frame))) {
force_sigsegv(ksig->sig, current);
return 1;
}

2
arch/m68k/include/asm/uaccess_mm.h
View File

@ -10,7 +10,7 @@
#include <asm/segment.h>
/* We let the MMU do all checking */
static inline int access_ok(int type, const void __user *addr,
static inline int access_ok(const void __user *addr,
unsigned long size)
{
return 1;

2
arch/m68k/include/asm/uaccess_no.h
View File

@ -10,7 +10,7 @@
#include <asm/segment.h>
#define access_ok(type,addr,size) _access_ok((unsigned long)(addr),(size))
#define access_ok(addr,size) _access_ok((unsigned long)(addr),(size))
/*
* It is not enough to just have access_ok check for a real RAM address.

4
arch/m68k/kernel/signal.c
View File

@ -787,7 +787,7 @@ asmlinkage int do_sigreturn(struct pt_regs *regs, struct switch_stack *sw)
struct sigframe __user *frame = (struct sigframe __user *)(usp - 4);
sigset_t set;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__get_user(set.sig[0], &frame->sc.sc_mask) ||
(_NSIG_WORDS > 1 &&
@ -812,7 +812,7 @@ asmlinkage int do_rt_sigreturn(struct pt_regs *regs, struct switch_stack *sw)
struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(usp - 4);
sigset_t set;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto badframe;

2
arch/microblaze/include/asm/futex.h
View File

@ -71,7 +71,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
int ret = 0, cmp;
u32 prev;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
__asm__ __volatile__ ("1: lwx %1, %3, r0; \

23
arch/microblaze/include/asm/uaccess.h
View File

@ -60,26 +60,25 @@ static inline int ___range_ok(unsigned long addr, unsigned long size)
#define __range_ok(addr, size) \
___range_ok((unsigned long)(addr), (unsigned long)(size))
#define access_ok(type, addr, size) (__range_ok((addr), (size)) == 0)
#define access_ok(addr, size) (__range_ok((addr), (size)) == 0)
#else
static inline int access_ok(int type, const void __user *addr,
unsigned long size)
static inline int access_ok(const void __user *addr, unsigned long size)
{
if (!size)
goto ok;
if ((get_fs().seg < ((unsigned long)addr)) ||
(get_fs().seg < ((unsigned long)addr + size - 1))) {
pr_devel("ACCESS fail: %s at 0x%08x (size 0x%x), seg 0x%08x\n",
type ? "WRITE" : "READ ", (__force u32)addr, (u32)size,
pr_devel("ACCESS fail at 0x%08x (size 0x%x), seg 0x%08x\n",
(__force u32)addr, (u32)size,
(u32)get_fs().seg);
return 0;
}
ok:
pr_devel("ACCESS OK: %s at 0x%08x (size 0x%x), seg 0x%08x\n",
type ? "WRITE" : "READ ", (__force u32)addr, (u32)size,
pr_devel("ACCESS OK at 0x%08x (size 0x%x), seg 0x%08x\n",
(__force u32)addr, (u32)size,
(u32)get_fs().seg);
return 1;
}
@ -120,7 +119,7 @@ static inline unsigned long __must_check clear_user(void __user *to,
unsigned long n)
{
might_fault();
if (unlikely(!access_ok(VERIFY_WRITE, to, n)))
if (unlikely(!access_ok(to, n)))
return n;
return __clear_user(to, n);
@ -174,7 +173,7 @@ extern long __user_bad(void);
const typeof(*(ptr)) __user *__gu_addr = (ptr); \
int __gu_err = 0; \
\
if (access_ok(VERIFY_READ, __gu_addr, size)) { \
if (access_ok(__gu_addr, size)) { \
switch (size) { \
case 1: \
__get_user_asm("lbu", __gu_addr, __gu_val, \
@ -286,7 +285,7 @@ extern long __user_bad(void);
typeof(*(ptr)) __user *__pu_addr = (ptr); \
int __pu_err = 0; \
\
if (access_ok(VERIFY_WRITE, __pu_addr, size)) { \
if (access_ok(__pu_addr, size)) { \
switch (size) { \
case 1: \
__put_user_asm("sb", __pu_addr, __pu_val, \
@ -358,7 +357,7 @@ extern int __strncpy_user(char *to, const char __user *from, int len);
static inline long
strncpy_from_user(char *dst, const char __user *src, long count)
{
if (!access_ok(VERIFY_READ, src, 1))
if (!access_ok(src, 1))
return -EFAULT;
return __strncpy_user(dst, src, count);
}
@ -372,7 +371,7 @@ extern int __strnlen_user(const char __user *sstr, int len);
static inline long strnlen_user(const char __user *src, long n)
{
if (!access_ok(VERIFY_READ, src, 1))
if (!access_ok(src, 1))
return 0;
return __strnlen_user(src, n);
}

4
arch/microblaze/kernel/signal.c
View File

@ -91,7 +91,7 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
/* Always make any pending restarted system calls return -EINTR */
current->restart_block.fn = do_no_restart_syscall;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
@ -166,7 +166,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
frame = get_sigframe(ksig, regs, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
return -EFAULT;
if (ksig->ka.sa.sa_flags & SA_SIGINFO)

4
arch/mips/include/asm/checksum.h
View File

@ -63,7 +63,7 @@ static inline
__wsum csum_and_copy_from_user(const void __user *src, void *dst,
int len, __wsum sum, int *err_ptr)
{
if (access_ok(VERIFY_READ, src, len))
if (access_ok(src, len))
return csum_partial_copy_from_user(src, dst, len, sum,
err_ptr);
if (len)
@ -81,7 +81,7 @@ __wsum csum_and_copy_to_user(const void *src, void __user *dst, int len,
__wsum sum, int *err_ptr)
{
might_fault();
if (access_ok(VERIFY_WRITE, dst, len)) {
if (access_ok(dst, len)) {
if (uaccess_kernel())
return __csum_partial_copy_kernel(src,
(__force void *)dst,

2
arch/mips/include/asm/futex.h
View File

@ -129,7 +129,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
int ret = 0;
u32 val;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
if (cpu_has_llsc && R10000_LLSC_WAR) {

4
arch/mips/include/asm/termios.h
View File

@ -32,7 +32,7 @@ static inline int user_termio_to_kernel_termios(struct ktermios *termios,
unsigned short iflag, oflag, cflag, lflag;
unsigned int err;
if (!access_ok(VERIFY_READ, termio, sizeof(struct termio)))
if (!access_ok(termio, sizeof(struct termio)))
return -EFAULT;
err = __get_user(iflag, &termio->c_iflag);
@ -61,7 +61,7 @@ static inline int kernel_termios_to_user_termio(struct termio __user *termio,
{
int err;
if (!access_ok(VERIFY_WRITE, termio, sizeof(struct termio)))
if (!access_ok(termio, sizeof(struct termio)))
return -EFAULT;
err = __put_user(termios->c_iflag, &termio->c_iflag);

12
arch/mips/include/asm/uaccess.h
View File

@ -109,9 +109,6 @@ static inline bool eva_kernel_access(void)
/*
* access_ok: - Checks if a user space pointer is valid
* @type: Type of access: %VERIFY_READ or %VERIFY_WRITE. Note that
* %VERIFY_WRITE is a superset of %VERIFY_READ - if it is safe
* to write to a block, it is always safe to read from it.
* @addr: User space pointer to start of block to check
* @size: Size of block to check
*
@ -134,7 +131,7 @@ static inline int __access_ok(const void __user *p, unsigned long size)
return (get_fs().seg & (addr | (addr + size) | __ua_size(size))) == 0;
}
#define access_ok(type, addr, size) \
#define access_ok(addr, size) \
likely(__access_ok((addr), (size)))
/*
@ -304,7 +301,7 @@ do { \
const __typeof__(*(ptr)) __user * __gu_ptr = (ptr); \
\
might_fault(); \
if (likely(access_ok(VERIFY_READ, __gu_ptr, size))) { \
if (likely(access_ok( __gu_ptr, size))) { \
if (eva_kernel_access()) \
__get_kernel_common((x), size, __gu_ptr); \
else \
@ -446,7 +443,7 @@ do { \
int __pu_err = -EFAULT; \
\
might_fault(); \
if (likely(access_ok(VERIFY_WRITE, __pu_addr, size))) { \
if (likely(access_ok( __pu_addr, size))) { \
if (eva_kernel_access()) \
__put_kernel_common(__pu_addr, size); \
else \
@ -691,8 +688,7 @@ __clear_user(void __user *addr, __kernel_size_t size)
({ \
void __user * __cl_addr = (addr); \
unsigned long __cl_size = (n); \
if (__cl_size && access_ok(VERIFY_WRITE, \
__cl_addr, __cl_size)) \
if (__cl_size && access_ok(__cl_addr, __cl_size)) \
__cl_size = __clear_user(__cl_addr, __cl_size); \
__cl_size; \
})

24
arch/mips/kernel/mips-r2-to-r6-emul.c
View File

@ -1205,7 +1205,7 @@ fpu_emul:
case lwl_op:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
if (!access_ok(VERIFY_READ, (void __user *)vaddr, 4)) {
if (!access_ok((void __user *)vaddr, 4)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@ -1278,7 +1278,7 @@ fpu_emul:
case lwr_op:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
if (!access_ok(VERIFY_READ, (void __user *)vaddr, 4)) {
if (!access_ok((void __user *)vaddr, 4)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@ -1352,7 +1352,7 @@ fpu_emul:
case swl_op:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
if (!access_ok(VERIFY_WRITE, (void __user *)vaddr, 4)) {
if (!access_ok((void __user *)vaddr, 4)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@ -1422,7 +1422,7 @@ fpu_emul:
case swr_op:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
if (!access_ok(VERIFY_WRITE, (void __user *)vaddr, 4)) {
if (!access_ok((void __user *)vaddr, 4)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@ -1497,7 +1497,7 @@ fpu_emul:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
if (!access_ok(VERIFY_READ, (void __user *)vaddr, 8)) {
if (!access_ok((void __user *)vaddr, 8)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@ -1616,7 +1616,7 @@ fpu_emul:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
if (!access_ok(VERIFY_READ, (void __user *)vaddr, 8)) {
if (!access_ok((void __user *)vaddr, 8)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@ -1735,7 +1735,7 @@ fpu_emul:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
if (!access_ok(VERIFY_WRITE, (void __user *)vaddr, 8)) {
if (!access_ok((void __user *)vaddr, 8)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@ -1853,7 +1853,7 @@ fpu_emul:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
if (!access_ok(VERIFY_WRITE, (void __user *)vaddr, 8)) {
if (!access_ok((void __user *)vaddr, 8)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@ -1970,7 +1970,7 @@ fpu_emul:
err = SIGBUS;
break;
}
if (!access_ok(VERIFY_READ, (void __user *)vaddr, 4)) {
if (!access_ok((void __user *)vaddr, 4)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGBUS;
break;
@ -2026,7 +2026,7 @@ fpu_emul:
err = SIGBUS;
break;
}
if (!access_ok(VERIFY_WRITE, (void __user *)vaddr, 4)) {
if (!access_ok((void __user *)vaddr, 4)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGBUS;
break;
@ -2089,7 +2089,7 @@ fpu_emul:
err = SIGBUS;
break;
}
if (!access_ok(VERIFY_READ, (void __user *)vaddr, 8)) {
if (!access_ok((void __user *)vaddr, 8)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGBUS;
break;
@ -2150,7 +2150,7 @@ fpu_emul:
err = SIGBUS;
break;
}
if (!access_ok(VERIFY_WRITE, (void __user *)vaddr, 8)) {
if (!access_ok((void __user *)vaddr, 8)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGBUS;
break;

12
arch/mips/kernel/ptrace.c
View File

@ -71,7 +71,7 @@ int ptrace_getregs(struct task_struct *child, struct user_pt_regs __user *data)
struct pt_regs *regs;
int i;
if (!access_ok(VERIFY_WRITE, data, 38 * 8))
if (!access_ok(data, 38 * 8))
return -EIO;
regs = task_pt_regs(child);
@ -98,7 +98,7 @@ int ptrace_setregs(struct task_struct *child, struct user_pt_regs __user *data)
struct pt_regs *regs;
int i;
if (!access_ok(VERIFY_READ, data, 38 * 8))
if (!access_ok(data, 38 * 8))
return -EIO;
regs = task_pt_regs(child);
@ -125,7 +125,7 @@ int ptrace_get_watch_regs(struct task_struct *child,
if (!cpu_has_watch || boot_cpu_data.watch_reg_use_cnt == 0)
return -EIO;
if (!access_ok(VERIFY_WRITE, addr, sizeof(struct pt_watch_regs)))
if (!access_ok(addr, sizeof(struct pt_watch_regs)))
return -EIO;
#ifdef CONFIG_32BIT
@ -167,7 +167,7 @@ int ptrace_set_watch_regs(struct task_struct *child,
if (!cpu_has_watch || boot_cpu_data.watch_reg_use_cnt == 0)
return -EIO;
if (!access_ok(VERIFY_READ, addr, sizeof(struct pt_watch_regs)))
if (!access_ok(addr, sizeof(struct pt_watch_regs)))
return -EIO;
/* Check the values. */
for (i = 0; i < boot_cpu_data.watch_reg_use_cnt; i++) {
@ -359,7 +359,7 @@ int ptrace_getfpregs(struct task_struct *child, __u32 __user *data)
{
int i;
if (!access_ok(VERIFY_WRITE, data, 33 * 8))
if (!access_ok(data, 33 * 8))
return -EIO;
if (tsk_used_math(child)) {
@ -385,7 +385,7 @@ int ptrace_setfpregs(struct task_struct *child, __u32 __user *data)
u32 value;
int i;
if (!access_ok(VERIFY_READ, data, 33 * 8))
if (!access_ok(data, 33 * 8))
return -EIO;
init_fp_ctx(child);

12
arch/mips/kernel/signal.c
View File

@ -590,7 +590,7 @@ SYSCALL_DEFINE3(sigaction, int, sig, const struct sigaction __user *, act,
if (act) {
old_sigset_t mask;
if (!access_ok(VERIFY_READ, act, sizeof(*act)))
if (!access_ok(act, sizeof(*act)))
return -EFAULT;
err |= __get_user(new_ka.sa.sa_handler, &act->sa_handler);
err |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
@ -604,7 +604,7 @@ SYSCALL_DEFINE3(sigaction, int, sig, const struct sigaction __user *, act,
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)))
if (!access_ok(oact, sizeof(*oact)))
return -EFAULT;
err |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
err |= __put_user(old_ka.sa.sa_handler, &oact->sa_handler);
@ -630,7 +630,7 @@ asmlinkage void sys_sigreturn(void)
regs = current_pt_regs();
frame = (struct sigframe __user *)regs->regs[29];
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&blocked, &frame->sf_mask, sizeof(blocked)))
goto badframe;
@ -667,7 +667,7 @@ asmlinkage void sys_rt_sigreturn(void)
regs = current_pt_regs();
frame = (struct rt_sigframe __user *)regs->regs[29];
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->rs_uc.uc_sigmask, sizeof(set)))
goto badframe;
@ -705,7 +705,7 @@ static int setup_frame(void *sig_return, struct ksignal *ksig,
int err = 0;
frame = get_sigframe(ksig, regs, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
if (!access_ok(frame, sizeof (*frame)))
return -EFAULT;
err |= setup_sigcontext(regs, &frame->sf_sc);
@ -744,7 +744,7 @@ static int setup_rt_frame(void *sig_return, struct ksignal *ksig,
int err = 0;
frame = get_sigframe(ksig, regs, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
if (!access_ok(frame, sizeof (*frame)))
return -EFAULT;
/* Create siginfo. */

4
arch/mips/kernel/signal32.c
View File

@ -46,7 +46,7 @@ SYSCALL_DEFINE3(32_sigaction, long, sig, const struct compat_sigaction __user *,
old_sigset_t mask;
s32 handler;
if (!access_ok(VERIFY_READ, act, sizeof(*act)))
if (!access_ok(act, sizeof(*act)))
return -EFAULT;
err |= __get_user(handler, &act->sa_handler);
new_ka.sa.sa_handler = (void __user *)(s64)handler;
@ -61,7 +61,7 @@ SYSCALL_DEFINE3(32_sigaction, long, sig, const struct compat_sigaction __user *,
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)))
if (!access_ok(oact, sizeof(*oact)))
return -EFAULT;
err |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
err |= __put_user((u32)(u64)old_ka.sa.sa_handler,

4
arch/mips/kernel/signal_n32.c
View File

@ -73,7 +73,7 @@ asmlinkage void sysn32_rt_sigreturn(void)
regs = current_pt_regs();
frame = (struct rt_sigframe_n32 __user *)regs->regs[29];
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_conv_sigset_from_user(&set, &frame->rs_uc.uc_sigmask))
goto badframe;
@ -110,7 +110,7 @@ static int setup_rt_frame_n32(void *sig_return, struct ksignal *ksig,
int err = 0;
frame = get_sigframe(ksig, regs, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
if (!access_ok(frame, sizeof (*frame)))
return -EFAULT;
/* Create siginfo. */

8
arch/mips/kernel/signal_o32.c
View File

@ -118,7 +118,7 @@ static int setup_frame_32(void *sig_return, struct ksignal *ksig,
int err = 0;
frame = get_sigframe(ksig, regs, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
if (!access_ok(frame, sizeof (*frame)))
return -EFAULT;
err |= setup_sigcontext32(regs, &frame->sf_sc);
@ -160,7 +160,7 @@ asmlinkage void sys32_rt_sigreturn(void)
regs = current_pt_regs();
frame = (struct rt_sigframe32 __user *)regs->regs[29];
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_conv_sigset_from_user(&set, &frame->rs_uc.uc_sigmask))
goto badframe;
@ -197,7 +197,7 @@ static int setup_rt_frame_32(void *sig_return, struct ksignal *ksig,
int err = 0;
frame = get_sigframe(ksig, regs, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
if (!access_ok(frame, sizeof (*frame)))
return -EFAULT;
/* Convert (siginfo_t -> compat_siginfo_t) and copy to user. */
@ -262,7 +262,7 @@ asmlinkage void sys32_sigreturn(void)
regs = current_pt_regs();
frame = (struct sigframe32 __user *)regs->regs[29];
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_conv_sigset_from_user(&blocked, &frame->sf_mask))
goto badframe;

2
arch/mips/kernel/syscall.c
View File

@ -101,7 +101,7 @@ static inline int mips_atomic_set(unsigned long addr, unsigned long new)
if (unlikely(addr & 3))
return -EINVAL;
if (unlikely(!access_ok(VERIFY_WRITE, (const void __user *)addr, 4)))
if (unlikely(!access_ok((const void __user *)addr, 4)))
return -EINVAL;
if (cpu_has_llsc && R10000_LLSC_WAR) {

98
arch/mips/kernel/unaligned.c
View File

@ -936,7 +936,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
if (insn.dsp_format.func == lx_op) {
switch (insn.dsp_format.op) {
case lwx_op:
if (!access_ok(VERIFY_READ, addr, 4))
if (!access_ok(addr, 4))
goto sigbus;
LoadW(addr, value, res);
if (res)
@ -945,7 +945,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
regs->regs[insn.dsp_format.rd] = value;
break;
case lhx_op:
if (!access_ok(VERIFY_READ, addr, 2))
if (!access_ok(addr, 2))
goto sigbus;
LoadHW(addr, value, res);
if (res)
@ -968,7 +968,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
set_fs(USER_DS);
switch (insn.spec3_format.func) {
case lhe_op:
if (!access_ok(VERIFY_READ, addr, 2)) {
if (!access_ok(addr, 2)) {
set_fs(seg);
goto sigbus;
}
@ -981,7 +981,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
regs->regs[insn.spec3_format.rt] = value;
break;
case lwe_op:
if (!access_ok(VERIFY_READ, addr, 4)) {
if (!access_ok(addr, 4)) {
set_fs(seg);
goto sigbus;
}
@ -994,7 +994,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
regs->regs[insn.spec3_format.rt] = value;
break;
case lhue_op:
if (!access_ok(VERIFY_READ, addr, 2)) {
if (!access_ok(addr, 2)) {
set_fs(seg);
goto sigbus;
}
@ -1007,7 +1007,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
regs->regs[insn.spec3_format.rt] = value;
break;
case she_op:
if (!access_ok(VERIFY_WRITE, addr, 2)) {
if (!access_ok(addr, 2)) {
set_fs(seg);
goto sigbus;
}
@ -1020,7 +1020,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
}
break;
case swe_op:
if (!access_ok(VERIFY_WRITE, addr, 4)) {
if (!access_ok(addr, 4)) {
set_fs(seg);
goto sigbus;
}
@ -1041,7 +1041,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
#endif
break;
case lh_op:
if (!access_ok(VERIFY_READ, addr, 2))
if (!access_ok(addr, 2))
goto sigbus;
if (IS_ENABLED(CONFIG_EVA)) {
@ -1060,7 +1060,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
break;
case lw_op:
if (!access_ok(VERIFY_READ, addr, 4))
if (!access_ok(addr, 4))
goto sigbus;
if (IS_ENABLED(CONFIG_EVA)) {
@ -1079,7 +1079,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
break;
case lhu_op:
if (!access_ok(VERIFY_READ, addr, 2))
if (!access_ok(addr, 2))
goto sigbus;
if (IS_ENABLED(CONFIG_EVA)) {
@ -1106,7 +1106,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
* would blow up, so for now we don't handle unaligned 64-bit
* instructions on 32-bit kernels.
*/
if (!access_ok(VERIFY_READ, addr, 4))
if (!access_ok(addr, 4))
goto sigbus;
LoadWU(addr, value, res);
@ -1129,7 +1129,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
* would blow up, so for now we don't handle unaligned 64-bit
* instructions on 32-bit kernels.
*/
if (!access_ok(VERIFY_READ, addr, 8))
if (!access_ok(addr, 8))
goto sigbus;
LoadDW(addr, value, res);
@ -1144,7 +1144,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
goto sigill;
case sh_op:
if (!access_ok(VERIFY_WRITE, addr, 2))
if (!access_ok(addr, 2))
goto sigbus;
compute_return_epc(regs);
@ -1164,7 +1164,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
break;
case sw_op:
if (!access_ok(VERIFY_WRITE, addr, 4))
if (!access_ok(addr, 4))
goto sigbus;
compute_return_epc(regs);
@ -1192,7 +1192,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
* would blow up, so for now we don't handle unaligned 64-bit
* instructions on 32-bit kernels.
*/
if (!access_ok(VERIFY_WRITE, addr, 8))
if (!access_ok(addr, 8))
goto sigbus;
compute_return_epc(regs);
@ -1254,7 +1254,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
switch (insn.msa_mi10_format.func) {
case msa_ld_op:
if (!access_ok(VERIFY_READ, addr, sizeof(*fpr)))
if (!access_ok(addr, sizeof(*fpr)))
goto sigbus;
do {
@ -1290,7 +1290,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
break;
case msa_st_op:
if (!access_ok(VERIFY_WRITE, addr, sizeof(*fpr)))
if (!access_ok(addr, sizeof(*fpr)))
goto sigbus;
/*
@ -1463,7 +1463,7 @@ static void emulate_load_store_microMIPS(struct pt_regs *regs,
if (reg == 31)
goto sigbus;
if (!access_ok(VERIFY_READ, addr, 8))
if (!access_ok(addr, 8))
goto sigbus;
LoadW(addr, value, res);
@ -1482,7 +1482,7 @@ static void emulate_load_store_microMIPS(struct pt_regs *regs,
if (reg == 31)
goto sigbus;
if (!access_ok(VERIFY_WRITE, addr, 8))
if (!access_ok(addr, 8))
goto sigbus;
value = regs->regs[reg];
@ -1502,7 +1502,7 @@ static void emulate_load_store_microMIPS(struct pt_regs *regs,
if (reg == 31)
goto sigbus;
if (!access_ok(VERIFY_READ, addr, 16))
if (!access_ok(addr, 16))
goto sigbus;
LoadDW(addr, value, res);
@ -1525,7 +1525,7 @@ static void emulate_load_store_microMIPS(struct pt_regs *regs,
if (reg == 31)
goto sigbus;
if (!access_ok(VERIFY_WRITE, addr, 16))
if (!access_ok(addr, 16))
goto sigbus;
value = regs->regs[reg];
@ -1548,11 +1548,10 @@ static void emulate_load_store_microMIPS(struct pt_regs *regs,
if ((rvar > 9) || !reg)
goto sigill;
if (reg & 0x10) {
if (!access_ok
(VERIFY_READ, addr, 4 * (rvar + 1)))
if (!access_ok(addr, 4 * (rvar + 1)))
goto sigbus;
} else {
if (!access_ok(VERIFY_READ, addr, 4 * rvar))
if (!access_ok(addr, 4 * rvar))
goto sigbus;
}
if (rvar == 9)
@ -1585,11 +1584,10 @@ static void emulate_load_store_microMIPS(struct pt_regs *regs,
if ((rvar > 9) || !reg)
goto sigill;
if (reg & 0x10) {
if (!access_ok
(VERIFY_WRITE, addr, 4 * (rvar + 1)))
if (!access_ok(addr, 4 * (rvar + 1)))
goto sigbus;
} else {
if (!access_ok(VERIFY_WRITE, addr, 4 * rvar))
if (!access_ok(addr, 4 * rvar))
goto sigbus;
}
if (rvar == 9)
@ -1623,11 +1621,10 @@ static void emulate_load_store_microMIPS(struct pt_regs *regs,
if ((rvar > 9) || !reg)
goto sigill;
if (reg & 0x10) {
if (!access_ok
(VERIFY_READ, addr, 8 * (rvar + 1)))
if (!access_ok(addr, 8 * (rvar + 1)))
goto sigbus;
} else {
if (!access_ok(VERIFY_READ, addr, 8 * rvar))
if (!access_ok(addr, 8 * rvar))
goto sigbus;
}
if (rvar == 9)
@ -1665,11 +1662,10 @@ static void emulate_load_store_microMIPS(struct pt_regs *regs,
if ((rvar > 9) || !reg)
goto sigill;
if (reg & 0x10) {
if (!access_ok
(VERIFY_WRITE, addr, 8 * (rvar + 1)))
if (!access_ok(addr, 8 * (rvar + 1)))
goto sigbus;
} else {
if (!access_ok(VERIFY_WRITE, addr, 8 * rvar))
if (!access_ok(addr, 8 * rvar))
goto sigbus;
}
if (rvar == 9)
@ -1788,7 +1784,7 @@ fpu_emul:
case mm_lwm16_op:
reg = insn.mm16_m_format.rlist;
rvar = reg + 1;
if (!access_ok(VERIFY_READ, addr, 4 * rvar))
if (!access_ok(addr, 4 * rvar))
goto sigbus;
for (i = 16; rvar; rvar--, i++) {
@ -1808,7 +1804,7 @@ fpu_emul:
case mm_swm16_op:
reg = insn.mm16_m_format.rlist;
rvar = reg + 1;
if (!access_ok(VERIFY_WRITE, addr, 4 * rvar))
if (!access_ok(addr, 4 * rvar))
goto sigbus;
for (i = 16; rvar; rvar--, i++) {
@ -1862,7 +1858,7 @@ fpu_emul:
}
loadHW:
if (!access_ok(VERIFY_READ, addr, 2))
if (!access_ok(addr, 2))
goto sigbus;
LoadHW(addr, value, res);
@ -1872,7 +1868,7 @@ loadHW:
goto success;
loadHWU:
if (!access_ok(VERIFY_READ, addr, 2))
if (!access_ok(addr, 2))
goto sigbus;
LoadHWU(addr, value, res);
@ -1882,7 +1878,7 @@ loadHWU:
goto success;
loadW:
if (!access_ok(VERIFY_READ, addr, 4))
if (!access_ok(addr, 4))
goto sigbus;
LoadW(addr, value, res);
@ -1900,7 +1896,7 @@ loadWU:
* would blow up, so for now we don't handle unaligned 64-bit
* instructions on 32-bit kernels.
*/
if (!access_ok(VERIFY_READ, addr, 4))
if (!access_ok(addr, 4))
goto sigbus;
LoadWU(addr, value, res);
@ -1922,7 +1918,7 @@ loadDW:
* would blow up, so for now we don't handle unaligned 64-bit
* instructions on 32-bit kernels.
*/
if (!access_ok(VERIFY_READ, addr, 8))
if (!access_ok(addr, 8))
goto sigbus;
LoadDW(addr, value, res);
@ -1936,7 +1932,7 @@ loadDW:
goto sigill;
storeHW:
if (!access_ok(VERIFY_WRITE, addr, 2))
if (!access_ok(addr, 2))
goto sigbus;
value = regs->regs[reg];
@ -1946,7 +1942,7 @@ storeHW:
goto success;
storeW:
if (!access_ok(VERIFY_WRITE, addr, 4))
if (!access_ok(addr, 4))
goto sigbus;
value = regs->regs[reg];
@ -1964,7 +1960,7 @@ storeDW:
* would blow up, so for now we don't handle unaligned 64-bit
* instructions on 32-bit kernels.
*/
if (!access_ok(VERIFY_WRITE, addr, 8))
if (!access_ok(addr, 8))
goto sigbus;
value = regs->regs[reg];
@ -2122,7 +2118,7 @@ static void emulate_load_store_MIPS16e(struct pt_regs *regs, void __user * addr)
goto sigbus;
case MIPS16e_lh_op:
if (!access_ok(VERIFY_READ, addr, 2))
if (!access_ok(addr, 2))
goto sigbus;
LoadHW(addr, value, res);
@ -2133,7 +2129,7 @@ static void emulate_load_store_MIPS16e(struct pt_regs *regs, void __user * addr)
break;
case MIPS16e_lhu_op:
if (!access_ok(VERIFY_READ, addr, 2))
if (!access_ok(addr, 2))
goto sigbus;
LoadHWU(addr, value, res);
@ -2146,7 +2142,7 @@ static void emulate_load_store_MIPS16e(struct pt_regs *regs, void __user * addr)
case MIPS16e_lw_op:
case MIPS16e_lwpc_op:
case MIPS16e_lwsp_op:
if (!access_ok(VERIFY_READ, addr, 4))
if (!access_ok(addr, 4))
goto sigbus;
LoadW(addr, value, res);
@ -2165,7 +2161,7 @@ static void emulate_load_store_MIPS16e(struct pt_regs *regs, void __user * addr)
* would blow up, so for now we don't handle unaligned 64-bit
* instructions on 32-bit kernels.
*/
if (!access_ok(VERIFY_READ, addr, 4))
if (!access_ok(addr, 4))
goto sigbus;
LoadWU(addr, value, res);
@ -2189,7 +2185,7 @@ loadDW:
* would blow up, so for now we don't handle unaligned 64-bit
* instructions on 32-bit kernels.
*/
if (!access_ok(VERIFY_READ, addr, 8))
if (!access_ok(addr, 8))
goto sigbus;
LoadDW(addr, value, res);
@ -2204,7 +2200,7 @@ loadDW:
goto sigill;
case MIPS16e_sh_op:
if (!access_ok(VERIFY_WRITE, addr, 2))
if (!access_ok(addr, 2))
goto sigbus;
MIPS16e_compute_return_epc(regs, &oldinst);
@ -2217,7 +2213,7 @@ loadDW:
case MIPS16e_sw_op:
case MIPS16e_swsp_op:
case MIPS16e_i8_op: /* actually - MIPS16e_swrasp_func */
if (!access_ok(VERIFY_WRITE, addr, 4))
if (!access_ok(addr, 4))
goto sigbus;
MIPS16e_compute_return_epc(regs, &oldinst);
@ -2237,7 +2233,7 @@ writeDW:
* would blow up, so for now we don't handle unaligned 64-bit
* instructions on 32-bit kernels.
*/
if (!access_ok(VERIFY_WRITE, addr, 8))
if (!access_ok(addr, 8))
goto sigbus;
MIPS16e_compute_return_epc(regs, &oldinst);

16
arch/mips/math-emu/cp1emu.c
View File

@ -1063,7 +1063,7 @@ emul:
MIPSInst_SIMM(ir));
MIPS_FPU_EMU_INC_STATS(loads);
if (!access_ok(VERIFY_READ, dva, sizeof(u64))) {
if (!access_ok(dva, sizeof(u64))) {
MIPS_FPU_EMU_INC_STATS(errors);
*fault_addr = dva;
return SIGBUS;
@ -1081,7 +1081,7 @@ emul:
MIPSInst_SIMM(ir));
MIPS_FPU_EMU_INC_STATS(stores);
DIFROMREG(dval, MIPSInst_RT(ir));
if (!access_ok(VERIFY_WRITE, dva, sizeof(u64))) {
if (!access_ok(dva, sizeof(u64))) {
MIPS_FPU_EMU_INC_STATS(errors);
*fault_addr = dva;
return SIGBUS;
@ -1097,7 +1097,7 @@ emul:
wva = (u32 __user *) (xcp->regs[MIPSInst_RS(ir)] +
MIPSInst_SIMM(ir));
MIPS_FPU_EMU_INC_STATS(loads);
if (!access_ok(VERIFY_READ, wva, sizeof(u32))) {
if (!access_ok(wva, sizeof(u32))) {
MIPS_FPU_EMU_INC_STATS(errors);
*fault_addr = wva;
return SIGBUS;
@ -1115,7 +1115,7 @@ emul:
MIPSInst_SIMM(ir));
MIPS_FPU_EMU_INC_STATS(stores);
SIFROMREG(wval, MIPSInst_RT(ir));
if (!access_ok(VERIFY_WRITE, wva, sizeof(u32))) {
if (!access_ok(wva, sizeof(u32))) {
MIPS_FPU_EMU_INC_STATS(errors);
*fault_addr = wva;
return SIGBUS;
@ -1493,7 +1493,7 @@ static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
xcp->regs[MIPSInst_FT(ir)]);
MIPS_FPU_EMU_INC_STATS(loads);
if (!access_ok(VERIFY_READ, va, sizeof(u32))) {
if (!access_ok(va, sizeof(u32))) {
MIPS_FPU_EMU_INC_STATS(errors);
*fault_addr = va;
return SIGBUS;
@ -1513,7 +1513,7 @@ static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
MIPS_FPU_EMU_INC_STATS(stores);
SIFROMREG(val, MIPSInst_FS(ir));
if (!access_ok(VERIFY_WRITE, va, sizeof(u32))) {
if (!access_ok(va, sizeof(u32))) {
MIPS_FPU_EMU_INC_STATS(errors);
*fault_addr = va;
return SIGBUS;
@ -1590,7 +1590,7 @@ static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
xcp->regs[MIPSInst_FT(ir)]);
MIPS_FPU_EMU_INC_STATS(loads);
if (!access_ok(VERIFY_READ, va, sizeof(u64))) {
if (!access_ok(va, sizeof(u64))) {
MIPS_FPU_EMU_INC_STATS(errors);
*fault_addr = va;
return SIGBUS;
@ -1609,7 +1609,7 @@ static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
MIPS_FPU_EMU_INC_STATS(stores);
DIFROMREG(val, MIPSInst_FS(ir));
if (!access_ok(VERIFY_WRITE, va, sizeof(u64))) {
if (!access_ok(va, sizeof(u64))) {
MIPS_FPU_EMU_INC_STATS(errors);
*fault_addr = va;
return SIGBUS;

2
arch/mips/mm/cache.c
View File

@ -76,7 +76,7 @@ SYSCALL_DEFINE3(cacheflush, unsigned long, addr, unsigned long, bytes,
{
if (bytes == 0)
return 0;
if (!access_ok(VERIFY_WRITE, (void __user *) addr, bytes))
if (!access_ok((void __user *) addr, bytes))
return -EFAULT;
__flush_icache_user_range(addr, addr + bytes);

3
arch/mips/mm/gup.c
View File

@ -195,8 +195,7 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
addr = start;
len = (unsigned long) nr_pages << PAGE_SHIFT;
end = start + len;
if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ,
(void __user *)start, len)))
if (unlikely(!access_ok((void __user *)start, len)))
return 0;
/*

2
arch/mips/oprofile/backtrace.c
View File

@ -19,7 +19,7 @@ struct stackframe {
static inline int get_mem(unsigned long addr, unsigned long *result)
{
unsigned long *address = (unsigned long *) addr;
if (!access_ok(VERIFY_READ, address, sizeof(unsigned long)))
if (!access_ok(address, sizeof(unsigned long)))
return -1;
if (__copy_from_user_inatomic(result, address, sizeof(unsigned long)))
return -3;

2
arch/mips/sibyte/common/sb_tbprof.c
View File

@ -458,7 +458,7 @@ static ssize_t sbprof_tb_read(struct file *filp, char *buf,
char *dest = buf;
long cur_off = *offp;
if (!access_ok(VERIFY_WRITE, buf, size))
if (!access_ok(buf, size))
return -EFAULT;
mutex_lock(&sbp.lock);

2
arch/nds32/include/asm/futex.h
View File

@ -40,7 +40,7 @@ futex_atomic_cmpxchg_inatomic(u32 * uval, u32 __user * uaddr,
int ret = 0;
u32 val, tmp, flags;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
smp_mb();

11
arch/nds32/include/asm/uaccess.h
View File

@ -13,9 +13,6 @@
#include <asm/types.h>
#include <linux/mm.h>
#define VERIFY_READ 0
#define VERIFY_WRITE 1
#define __asmeq(x, y) ".ifnc " x "," y " ; .err ; .endif\n\t"
/*
@ -53,7 +50,7 @@ static inline void set_fs(mm_segment_t fs)
#define __range_ok(addr, size) (size <= get_fs() && addr <= (get_fs() -size))
#define access_ok(type, addr, size) \
#define access_ok(addr, size) \
__range_ok((unsigned long)addr, (unsigned long)size)
/*
* Single-value transfer routines. They automatically use the right
@ -94,7 +91,7 @@ static inline void set_fs(mm_segment_t fs)
({ \
const __typeof__(*(ptr)) __user *__p = (ptr); \
might_fault(); \
if (access_ok(VERIFY_READ, __p, sizeof(*__p))) { \
if (access_ok(__p, sizeof(*__p))) { \
__get_user_err((x), __p, (err)); \
} else { \
(x) = 0; (err) = -EFAULT; \
@ -189,7 +186,7 @@ do { \
({ \
__typeof__(*(ptr)) __user *__p = (ptr); \
might_fault(); \
if (access_ok(VERIFY_WRITE, __p, sizeof(*__p))) { \
if (access_ok(__p, sizeof(*__p))) { \
__put_user_err((x), __p, (err)); \
} else { \
(err) = -EFAULT; \
@ -279,7 +276,7 @@ extern unsigned long __arch_copy_to_user(void __user * to, const void *from,
#define INLINE_COPY_TO_USER
static inline unsigned long clear_user(void __user * to, unsigned long n)
{
if (access_ok(VERIFY_WRITE, to, n))
if (access_ok(to, n))
n = __arch_clear_user(to, n);
return n;
}

11
arch/nds32/kernel/perf_event_cpu.c
View File

@ -1306,7 +1306,7 @@ user_backtrace(struct perf_callchain_entry_ctx *entry, unsigned long fp)
(unsigned long *)(fp - (unsigned long)sizeof(buftail));
/* Check accessibility of one struct frame_tail beyond */
if (!access_ok(VERIFY_READ, user_frame_tail, sizeof(buftail)))
if (!access_ok(user_frame_tail, sizeof(buftail)))
return 0;
if (__copy_from_user_inatomic
(&buftail, user_frame_tail, sizeof(buftail)))
@ -1332,7 +1332,7 @@ user_backtrace_opt_size(struct perf_callchain_entry_ctx *entry,
(unsigned long *)(fp - (unsigned long)sizeof(buftail));
/* Check accessibility of one struct frame_tail beyond */
if (!access_ok(VERIFY_READ, user_frame_tail, sizeof(buftail)))
if (!access_ok(user_frame_tail, sizeof(buftail)))
return 0;
if (__copy_from_user_inatomic
(&buftail, user_frame_tail, sizeof(buftail)))
@ -1386,7 +1386,7 @@ perf_callchain_user(struct perf_callchain_entry_ctx *entry,
user_frame_tail =
(unsigned long *)(fp - (unsigned long)sizeof(fp));
if (!access_ok(VERIFY_READ, user_frame_tail, sizeof(fp)))
if (!access_ok(user_frame_tail, sizeof(fp)))
return;
if (__copy_from_user_inatomic
@ -1406,8 +1406,7 @@ perf_callchain_user(struct perf_callchain_entry_ctx *entry,
(unsigned long *)(fp -
(unsigned long)sizeof(buftail));
if (!access_ok
(VERIFY_READ, user_frame_tail, sizeof(buftail)))
if (!access_ok(user_frame_tail, sizeof(buftail)))
return;
if (__copy_from_user_inatomic
@ -1424,7 +1423,7 @@ perf_callchain_user(struct perf_callchain_entry_ctx *entry,
(unsigned long *)(fp - (unsigned long)
sizeof(buftail_opt_size));
if (!access_ok(VERIFY_READ, user_frame_tail,
if (!access_ok(user_frame_tail,
sizeof(buftail_opt_size)))
return;

4
arch/nds32/kernel/signal.c
View File

@ -151,7 +151,7 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
frame = (struct rt_sigframe __user *)regs->sp;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (restore_sigframe(regs, frame))
@ -275,7 +275,7 @@ setup_rt_frame(struct ksignal *ksig, sigset_t * set, struct pt_regs *regs)
get_sigframe(ksig, regs, sizeof(*frame));
int err = 0;
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
return -EFAULT;
__put_user_error(0, &frame->uc.uc_flags, err);

8
arch/nds32/mm/alignment.c
View File

@ -289,13 +289,13 @@ static inline int do_16(unsigned long inst, struct pt_regs *regs)
unaligned_addr += shift;
if (load) {
if (!access_ok(VERIFY_READ, (void *)unaligned_addr, len))
if (!access_ok((void *)unaligned_addr, len))
return -EACCES;
get_data(unaligned_addr, &target_val, len);
*idx_to_addr(regs, target_idx) = target_val;
} else {
if (!access_ok(VERIFY_WRITE, (void *)unaligned_addr, len))
if (!access_ok((void *)unaligned_addr, len))
return -EACCES;
target_val = *idx_to_addr(regs, target_idx);
set_data((void *)unaligned_addr, target_val, len);
@ -479,7 +479,7 @@ static inline int do_32(unsigned long inst, struct pt_regs *regs)
if (load) {
if (!access_ok(VERIFY_READ, (void *)unaligned_addr, len))
if (!access_ok((void *)unaligned_addr, len))
return -EACCES;
get_data(unaligned_addr, &target_val, len);
@ -491,7 +491,7 @@ static inline int do_32(unsigned long inst, struct pt_regs *regs)
*idx_to_addr(regs, RT(inst)) = target_val;
} else {
if (!access_ok(VERIFY_WRITE, (void *)unaligned_addr, len))
if (!access_ok((void *)unaligned_addr, len))
return -EACCES;
target_val = *idx_to_addr(regs, RT(inst));

8
arch/nios2/include/asm/uaccess.h
View File

@ -37,7 +37,7 @@
(((signed long)(((long)get_fs().seg) & \
((long)(addr) | (((long)(addr)) + (len)) | (len)))) == 0)
#define access_ok(type, addr, len) \
#define access_ok(addr, len) \
likely(__access_ok((unsigned long)(addr), (unsigned long)(len)))
# define __EX_TABLE_SECTION ".section __ex_table,\"a\"\n"
@ -70,7 +70,7 @@ static inline unsigned long __must_check __clear_user(void __user *to,
static inline unsigned long __must_check clear_user(void __user *to,
unsigned long n)
{
if (!access_ok(VERIFY_WRITE, to, n))
if (!access_ok(to, n))
return n;
return __clear_user(to, n);
}
@ -142,7 +142,7 @@ do { \
long __gu_err = -EFAULT; \
const __typeof__(*(ptr)) __user *__gu_ptr = (ptr); \
unsigned long __gu_val = 0; \
if (access_ok(VERIFY_READ, __gu_ptr, sizeof(*__gu_ptr))) \
if (access_ok( __gu_ptr, sizeof(*__gu_ptr))) \
__get_user_common(__gu_val, sizeof(*__gu_ptr), \
__gu_ptr, __gu_err); \
(x) = (__force __typeof__(x))__gu_val; \
@ -168,7 +168,7 @@ do { \
long __pu_err = -EFAULT; \
__typeof__(*(ptr)) __user *__pu_ptr = (ptr); \
__typeof__(*(ptr)) __pu_val = (__typeof(*ptr))(x); \
if (access_ok(VERIFY_WRITE, __pu_ptr, sizeof(*__pu_ptr))) { \
if (access_ok(__pu_ptr, sizeof(*__pu_ptr))) { \
switch (sizeof(*__pu_ptr)) { \
case 1: \
__put_user_asm(__pu_val, "stb", __pu_ptr, __pu_err); \

2
arch/nios2/kernel/signal.c
View File

@ -106,7 +106,7 @@ asmlinkage int do_rt_sigreturn(struct switch_stack *sw)
sigset_t set;
int rval;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))

2
arch/openrisc/include/asm/futex.h
View File

@ -72,7 +72,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
int ret = 0;
u32 prev;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
__asm__ __volatile__ ( \

8
arch/openrisc/include/asm/uaccess.h
View File

@ -58,7 +58,7 @@
/* Ensure that addr is below task's addr_limit */
#define __addr_ok(addr) ((unsigned long) addr < get_fs())
#define access_ok(type, addr, size) \
#define access_ok(addr, size) \
__range_ok((unsigned long)addr, (unsigned long)size)
/*
@ -102,7 +102,7 @@ extern long __put_user_bad(void);
({ \
long __pu_err = -EFAULT; \
__typeof__(*(ptr)) *__pu_addr = (ptr); \
if (access_ok(VERIFY_WRITE, __pu_addr, size)) \
if (access_ok(__pu_addr, size)) \
__put_user_size((x), __pu_addr, (size), __pu_err); \
__pu_err; \
})
@ -175,7 +175,7 @@ struct __large_struct {
({ \
long __gu_err = -EFAULT, __gu_val = 0; \
const __typeof__(*(ptr)) * __gu_addr = (ptr); \
if (access_ok(VERIFY_READ, __gu_addr, size)) \
if (access_ok(__gu_addr, size)) \
__get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
(x) = (__force __typeof__(*(ptr)))__gu_val; \
__gu_err; \
@ -254,7 +254,7 @@ extern unsigned long __clear_user(void *addr, unsigned long size);
static inline __must_check unsigned long
clear_user(void *addr, unsigned long size)
{
if (likely(access_ok(VERIFY_WRITE, addr, size)))
if (likely(access_ok(addr, size)))
size = __clear_user(addr, size);
return size;
}

6
arch/openrisc/kernel/signal.c
View File

@ -50,7 +50,7 @@ static int restore_sigcontext(struct pt_regs *regs,
/*
* Restore the regs from &sc->regs.
* (sc is already checked for VERIFY_READ since the sigframe was
* (sc is already checked since the sigframe was
* checked in sys_sigreturn previously)
*/
err |= __copy_from_user(regs, sc->regs.gpr, 32 * sizeof(unsigned long));
@ -83,7 +83,7 @@ asmlinkage long _sys_rt_sigreturn(struct pt_regs *regs)
if (((long)frame) & 3)
goto badframe;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto badframe;
@ -161,7 +161,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
frame = get_sigframe(ksig, regs, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
return -EFAULT;
/* Create siginfo. */

2
arch/parisc/include/asm/futex.h
View File

@ -95,7 +95,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
if (uaccess_kernel() && !uaddr)
return -EFAULT;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
/* HPPA has no cmpxchg in hardware and therefore the

2
arch/parisc/include/asm/uaccess.h
View File

@ -27,7 +27,7 @@
* that put_user is the same as __put_user, etc.
*/
#define access_ok(type, uaddr, size) \
#define access_ok(uaddr, size) \
( (uaddr) == (uaddr) )
#define put_user __put_user

2
arch/powerpc/include/asm/futex.h
View File

@ -72,7 +72,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
int ret = 0;
u32 prev;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
__asm__ __volatile__ (

8
arch/powerpc/include/asm/uaccess.h
View File

@ -62,7 +62,7 @@ static inline int __access_ok(unsigned long addr, unsigned long size,
#endif
#define access_ok(type, addr, size) \
#define access_ok(addr, size) \
(__chk_user_ptr(addr), (void)(type), \
__access_ok((__force unsigned long)(addr), (size), get_fs()))
@ -166,7 +166,7 @@ do { \
long __pu_err = -EFAULT; \
__typeof__(*(ptr)) __user *__pu_addr = (ptr); \
might_fault(); \
if (access_ok(VERIFY_WRITE, __pu_addr, size)) \
if (access_ok(__pu_addr, size)) \
__put_user_size((x), __pu_addr, (size), __pu_err); \
__pu_err; \
})
@ -276,7 +276,7 @@ do { \
__long_type(*(ptr)) __gu_val = 0; \
__typeof__(*(ptr)) __user *__gu_addr = (ptr); \
might_fault(); \
if (access_ok(VERIFY_READ, __gu_addr, (size))) { \
if (access_ok(__gu_addr, (size))) { \
barrier_nospec(); \
__get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
} \
@ -374,7 +374,7 @@ extern unsigned long __clear_user(void __user *addr, unsigned long size);
static inline unsigned long clear_user(void __user *addr, unsigned long size)
{
might_fault();
if (likely(access_ok(VERIFY_WRITE, addr, size)))
if (likely(access_ok(addr, size)))
return __clear_user(addr, size);
return size;
}

3
arch/powerpc/kernel/align.c
View File

@ -131,8 +131,7 @@ static int emulate_spe(struct pt_regs *regs, unsigned int reg,
/* Verify the address of the operand */
if (unlikely(user_mode(regs) &&
!access_ok((flags & ST ? VERIFY_WRITE : VERIFY_READ),
addr, nb)))
!access_ok(addr, nb)))
return -EFAULT;
/* userland only */

2
arch/powerpc/kernel/rtas_flash.c
View File

@ -523,7 +523,7 @@ static ssize_t validate_flash_write(struct file *file, const char __user *buf,
args_buf->status = VALIDATE_INCOMPLETE;
}
if (!access_ok(VERIFY_READ, buf, count)) {
if (!access_ok(buf, count)) {
rc = -EFAULT;
goto done;
}

2
arch/powerpc/kernel/rtasd.c
View File

@ -335,7 +335,7 @@ static ssize_t rtas_log_read(struct file * file, char __user * buf,
count = rtas_error_log_buffer_max;
if (!access_ok(VERIFY_WRITE, buf, count))
if (!access_ok(buf, count))
return -EFAULT;
tmp = kmalloc(count, GFP_KERNEL);

2
arch/powerpc/kernel/signal.c
View File

@ -44,7 +44,7 @@ void __user *get_sigframe(struct ksignal *ksig, unsigned long sp,
newsp = (oldsp - frame_size) & ~0xFUL;
/* Check access */
if (!access_ok(VERIFY_WRITE, (void __user *)newsp, oldsp - newsp))
if (!access_ok((void __user *)newsp, oldsp - newsp))
return NULL;
return (void __user *)newsp;

12
arch/powerpc/kernel/signal_32.c
View File

@ -1017,7 +1017,7 @@ static int do_setcontext(struct ucontext __user *ucp, struct pt_regs *regs, int
#else
if (__get_user(mcp, &ucp->uc_regs))
return -EFAULT;
if (!access_ok(VERIFY_READ, mcp, sizeof(*mcp)))
if (!access_ok(mcp, sizeof(*mcp)))
return -EFAULT;
#endif
set_current_blocked(&set);
@ -1120,7 +1120,7 @@ SYSCALL_DEFINE3(swapcontext, struct ucontext __user *, old_ctx,
*/
mctx = (struct mcontext __user *)
((unsigned long) &old_ctx->uc_mcontext & ~0xfUL);
if (!access_ok(VERIFY_WRITE, old_ctx, ctx_size)
if (!access_ok(old_ctx, ctx_size)
|| save_user_regs(regs, mctx, NULL, 0, ctx_has_vsx_region)
|| put_sigset_t(&old_ctx->uc_sigmask, &current->blocked)
|| __put_user(to_user_ptr(mctx), &old_ctx->uc_regs))
@ -1128,7 +1128,7 @@ SYSCALL_DEFINE3(swapcontext, struct ucontext __user *, old_ctx,
}
if (new_ctx == NULL)
return 0;
if (!access_ok(VERIFY_READ, new_ctx, ctx_size) ||
if (!access_ok(new_ctx, ctx_size) ||
fault_in_pages_readable((u8 __user *)new_ctx, ctx_size))
return -EFAULT;
@ -1169,7 +1169,7 @@ SYSCALL_DEFINE0(rt_sigreturn)
rt_sf = (struct rt_sigframe __user *)
(regs->gpr[1] + __SIGNAL_FRAMESIZE + 16);
if (!access_ok(VERIFY_READ, rt_sf, sizeof(*rt_sf)))
if (!access_ok(rt_sf, sizeof(*rt_sf)))
goto bad;
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
@ -1315,7 +1315,7 @@ SYSCALL_DEFINE3(debug_setcontext, struct ucontext __user *, ctx,
current->thread.debug.dbcr0 = new_dbcr0;
#endif
if (!access_ok(VERIFY_READ, ctx, sizeof(*ctx)) ||
if (!access_ok(ctx, sizeof(*ctx)) ||
fault_in_pages_readable((u8 __user *)ctx, sizeof(*ctx)))
return -EFAULT;
@ -1500,7 +1500,7 @@ SYSCALL_DEFINE0(sigreturn)
{
sr = (struct mcontext __user *)from_user_ptr(sigctx.regs);
addr = sr;
if (!access_ok(VERIFY_READ, sr, sizeof(*sr))
if (!access_ok(sr, sizeof(*sr))
|| restore_user_regs(regs, sr, 1))
goto badframe;
}

13
arch/powerpc/kernel/signal_64.c
View File

@ -383,7 +383,7 @@ static long restore_sigcontext(struct task_struct *tsk, sigset_t *set, int sig,
err |= __get_user(v_regs, &sc->v_regs);
if (err)
return err;
if (v_regs && !access_ok(VERIFY_READ, v_regs, 34 * sizeof(vector128)))
if (v_regs && !access_ok(v_regs, 34 * sizeof(vector128)))
return -EFAULT;
/* Copy 33 vec registers (vr0..31 and vscr) from the stack */
if (v_regs != NULL && (msr & MSR_VEC) != 0) {
@ -502,10 +502,9 @@ static long restore_tm_sigcontexts(struct task_struct *tsk,
err |= __get_user(tm_v_regs, &tm_sc->v_regs);
if (err)
return err;
if (v_regs && !access_ok(VERIFY_READ, v_regs, 34 * sizeof(vector128)))
if (v_regs && !access_ok(v_regs, 34 * sizeof(vector128)))
return -EFAULT;
if (tm_v_regs && !access_ok(VERIFY_READ,
tm_v_regs, 34 * sizeof(vector128)))
if (tm_v_regs && !access_ok(tm_v_regs, 34 * sizeof(vector128)))
return -EFAULT;
/* Copy 33 vec registers (vr0..31 and vscr) from the stack */
if (v_regs != NULL && tm_v_regs != NULL && (msr & MSR_VEC) != 0) {
@ -671,7 +670,7 @@ SYSCALL_DEFINE3(swapcontext, struct ucontext __user *, old_ctx,
ctx_has_vsx_region = 1;
if (old_ctx != NULL) {
if (!access_ok(VERIFY_WRITE, old_ctx, ctx_size)
if (!access_ok(old_ctx, ctx_size)
|| setup_sigcontext(&old_ctx->uc_mcontext, current, 0, NULL, 0,
ctx_has_vsx_region)
|| __copy_to_user(&old_ctx->uc_sigmask,
@ -680,7 +679,7 @@ SYSCALL_DEFINE3(swapcontext, struct ucontext __user *, old_ctx,
}
if (new_ctx == NULL)
return 0;
if (!access_ok(VERIFY_READ, new_ctx, ctx_size)
if (!access_ok(new_ctx, ctx_size)
|| __get_user(tmp, (u8 __user *) new_ctx)
|| __get_user(tmp, (u8 __user *) new_ctx + ctx_size - 1))
return -EFAULT;
@ -725,7 +724,7 @@ SYSCALL_DEFINE0(rt_sigreturn)
/* Always make any pending restarted system calls return -EINTR */
current->restart_block.fn = do_no_restart_syscall;
if (!access_ok(VERIFY_READ, uc, sizeof(*uc)))
if (!access_ok(uc, sizeof(*uc)))
goto badframe;
if (__copy_from_user(&set, &uc->uc_sigmask, sizeof(set)))

2
arch/powerpc/kernel/syscalls.c
View File

@ -89,7 +89,7 @@ ppc_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, s
if ( (unsigned long)n >= 4096 )
{
unsigned long __user *buffer = (unsigned long __user *)n;
if (!access_ok(VERIFY_READ, buffer, 5*sizeof(unsigned long))
if (!access_ok(buffer, 5*sizeof(unsigned long))
|| __get_user(n, buffer)
|| __get_user(inp, ((fd_set __user * __user *)(buffer+1)))
|| __get_user(outp, ((fd_set __user * __user *)(buffer+2)))

2
arch/powerpc/kernel/traps.c
View File

@ -837,7 +837,7 @@ static void p9_hmi_special_emu(struct pt_regs *regs)
addr = (__force const void __user *)ea;
/* Check it */
if (!access_ok(VERIFY_READ, addr, 16)) {
if (!access_ok(addr, 16)) {
pr_devel("HMI vec emu: bad access %i:%s[%d] nip=%016lx"
" instr=%08x addr=%016lx\n",
smp_processor_id(), current->comm, current->pid,

4
arch/powerpc/kvm/book3s_64_mmu_hv.c
View File

@ -1744,7 +1744,7 @@ static ssize_t kvm_htab_read(struct file *file, char __user *buf,
int first_pass;
unsigned long hpte[2];
if (!access_ok(VERIFY_WRITE, buf, count))
if (!access_ok(buf, count))
return -EFAULT;
if (kvm_is_radix(kvm))
return 0;
@ -1844,7 +1844,7 @@ static ssize_t kvm_htab_write(struct file *file, const char __user *buf,
int mmu_ready;
int pshift;
if (!access_ok(VERIFY_READ, buf, count))
if (!access_ok(buf, count))
return -EFAULT;
if (kvm_is_radix(kvm))
return -EINVAL;

4
arch/powerpc/lib/checksum_wrappers.c
View File

@ -37,7 +37,7 @@ __wsum csum_and_copy_from_user(const void __user *src, void *dst,
goto out;
}
if (unlikely((len < 0) || !access_ok(VERIFY_READ, src, len))) {
if (unlikely((len < 0) || !access_ok(src, len))) {
*err_ptr = -EFAULT;
csum = (__force unsigned int)sum;
goto out;
@ -78,7 +78,7 @@ __wsum csum_and_copy_to_user(const void *src, void __user *dst, int len,
goto out;
}
if (unlikely((len < 0) || !access_ok(VERIFY_WRITE, dst, len))) {
if (unlikely((len < 0) || !access_ok(dst, len))) {
*err_ptr = -EFAULT;
csum = -1; /* invalid checksum */
goto out;

2
arch/powerpc/mm/fault.c
View File

@ -274,7 +274,7 @@ static bool bad_stack_expansion(struct pt_regs *regs, unsigned long address,
return false;
if ((flags & FAULT_FLAG_WRITE) && (flags & FAULT_FLAG_USER) &&
access_ok(VERIFY_READ, nip, sizeof(*nip))) {
access_ok(nip, sizeof(*nip))) {
unsigned int inst;
int res;

2
arch/powerpc/mm/subpage-prot.c
View File

@ -214,7 +214,7 @@ SYSCALL_DEFINE3(subpage_prot, unsigned long, addr,
return 0;
}
if (!access_ok(VERIFY_READ, map, (len >> PAGE_SHIFT) * sizeof(u32)))
if (!access_ok(map, (len >> PAGE_SHIFT) * sizeof(u32)))
return -EFAULT;
down_write(&mm->mmap_sem);

4
arch/powerpc/oprofile/backtrace.c
View File

@ -31,7 +31,7 @@ static unsigned int user_getsp32(unsigned int sp, int is_first)
unsigned int stack_frame[2];
void __user *p = compat_ptr(sp);
if (!access_ok(VERIFY_READ, p, sizeof(stack_frame)))
if (!access_ok(p, sizeof(stack_frame)))
return 0;
/*
@ -57,7 +57,7 @@ static unsigned long user_getsp64(unsigned long sp, int is_first)
{
unsigned long stack_frame[3];
if (!access_ok(VERIFY_READ, (void __user *)sp, sizeof(stack_frame)))
if (!access_ok((void __user *)sp, sizeof(stack_frame)))
return 0;
if (__copy_from_user_inatomic(stack_frame, (void __user *)sp,

16
arch/powerpc/platforms/cell/spufs/file.c
View File

@ -609,7 +609,7 @@ static ssize_t spufs_mbox_read(struct file *file, char __user *buf,
if (len < 4)
return -EINVAL;
if (!access_ok(VERIFY_WRITE, buf, len))
if (!access_ok(buf, len))
return -EFAULT;
udata = (void __user *)buf;
@ -717,7 +717,7 @@ static ssize_t spufs_ibox_read(struct file *file, char __user *buf,
if (len < 4)
return -EINVAL;
if (!access_ok(VERIFY_WRITE, buf, len))
if (!access_ok(buf, len))
return -EFAULT;
udata = (void __user *)buf;
@ -856,7 +856,7 @@ static ssize_t spufs_wbox_write(struct file *file, const char __user *buf,
return -EINVAL;
udata = (void __user *)buf;
if (!access_ok(VERIFY_READ, buf, len))
if (!access_ok(buf, len))
return -EFAULT;
if (__get_user(wbox_data, udata))
@ -1994,7 +1994,7 @@ static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf,
int ret;
struct spu_context *ctx = file->private_data;
if (!access_ok(VERIFY_WRITE, buf, len))
if (!access_ok(buf, len))
return -EFAULT;
ret = spu_acquire_saved(ctx);
@ -2034,7 +2034,7 @@ static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf,
struct spu_context *ctx = file->private_data;
int ret;
if (!access_ok(VERIFY_WRITE, buf, len))
if (!access_ok(buf, len))
return -EFAULT;
ret = spu_acquire_saved(ctx);
@ -2077,7 +2077,7 @@ static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf,
struct spu_context *ctx = file->private_data;
int ret;
if (!access_ok(VERIFY_WRITE, buf, len))
if (!access_ok(buf, len))
return -EFAULT;
ret = spu_acquire_saved(ctx);
@ -2129,7 +2129,7 @@ static ssize_t spufs_dma_info_read(struct file *file, char __user *buf,
struct spu_context *ctx = file->private_data;
int ret;
if (!access_ok(VERIFY_WRITE, buf, len))
if (!access_ok(buf, len))
return -EFAULT;
ret = spu_acquire_saved(ctx);
@ -2160,7 +2160,7 @@ static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx,
if (len < ret)
return -EINVAL;
if (!access_ok(VERIFY_WRITE, buf, len))
if (!access_ok(buf, len))
return -EFAULT;
info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW;

4
arch/powerpc/platforms/powernv/opal-lpc.c
View File

@ -192,7 +192,7 @@ static ssize_t lpc_debug_read(struct file *filp, char __user *ubuf,
u32 data, pos, len, todo;
int rc;
if (!access_ok(VERIFY_WRITE, ubuf, count))
if (!access_ok(ubuf, count))
return -EFAULT;
todo = count;
@ -283,7 +283,7 @@ static ssize_t lpc_debug_write(struct file *filp, const char __user *ubuf,
u32 data, pos, len, todo;
int rc;
if (!access_ok(VERIFY_READ, ubuf, count))
if (!access_ok(ubuf, count))
return -EFAULT;
todo = count;

2
arch/powerpc/platforms/pseries/scanlog.c
View File

@ -63,7 +63,7 @@ static ssize_t scanlog_read(struct file *file, char __user *buf,
return -EINVAL;
}
if (!access_ok(VERIFY_WRITE, buf, count))
if (!access_ok(buf, count))
return -EFAULT;
for (;;) {

2
arch/riscv/include/asm/futex.h
View File

@ -95,7 +95,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 val;
uintptr_t tmp;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
__enable_user_access();

14
arch/riscv/include/asm/uaccess.h
View File

@ -54,14 +54,8 @@ static inline void set_fs(mm_segment_t fs)
#define user_addr_max() (get_fs())
#define VERIFY_READ 0
#define VERIFY_WRITE 1
/**
* access_ok: - Checks if a user space pointer is valid
* @type: Type of access: %VERIFY_READ or %VERIFY_WRITE. Note that
* %VERIFY_WRITE is a superset of %VERIFY_READ - if it is safe
* to write to a block, it is always safe to read from it.
* @addr: User space pointer to start of block to check
* @size: Size of block to check
*
@ -76,7 +70,7 @@ static inline void set_fs(mm_segment_t fs)
* checks that the pointer is in the user space range - after calling
* this function, memory access functions may still return -EFAULT.
*/
#define access_ok(type, addr, size) ({ \
#define access_ok(addr, size) ({ \
__chk_user_ptr(addr); \
likely(__access_ok((unsigned long __force)(addr), (size))); \
})
@ -258,7 +252,7 @@ do { \
({ \
const __typeof__(*(ptr)) __user *__p = (ptr); \
might_fault(); \
access_ok(VERIFY_READ, __p, sizeof(*__p)) ? \
access_ok(__p, sizeof(*__p)) ? \
__get_user((x), __p) : \
((x) = 0, -EFAULT); \
})
@ -386,7 +380,7 @@ do { \
({ \
__typeof__(*(ptr)) __user *__p = (ptr); \
might_fault(); \
access_ok(VERIFY_WRITE, __p, sizeof(*__p)) ? \
access_ok(__p, sizeof(*__p)) ? \
__put_user((x), __p) : \
-EFAULT; \
})
@ -421,7 +415,7 @@ static inline
unsigned long __must_check clear_user(void __user *to, unsigned long n)
{
might_fault();
return access_ok(VERIFY_WRITE, to, n) ?
return access_ok(to, n) ?
__clear_user(to, n) : n;
}

4
arch/riscv/kernel/signal.c
View File

@ -115,7 +115,7 @@ SYSCALL_DEFINE0(rt_sigreturn)
frame = (struct rt_sigframe __user *)regs->sp;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
@ -187,7 +187,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
long err = 0;
frame = get_sigframe(ksig, regs, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
return -EFAULT;
err |= copy_siginfo_to_user(&frame->info, &ksig->info);

2
arch/s390/include/asm/uaccess.h
View File

@ -48,7 +48,7 @@ static inline int __range_ok(unsigned long addr, unsigned long size)
__range_ok((unsigned long)(addr), (size)); \
})
#define access_ok(type, addr, size) __access_ok(addr, size)
#define access_ok(addr, size) __access_ok(addr, size)
unsigned long __must_check
raw_copy_from_user(void *to, const void __user *from, unsigned long n);

2
arch/sh/include/asm/checksum_32.h
View File

@ -197,7 +197,7 @@ static inline __wsum csum_and_copy_to_user(const void *src,
int len, __wsum sum,
int *err_ptr)
{
if (access_ok(VERIFY_WRITE, dst, len))
if (access_ok(dst, len))
return csum_partial_copy_generic((__force const void *)src,
dst, len, sum, NULL, err_ptr);

2
arch/sh/include/asm/futex.h
View File

@ -22,7 +22,7 @@ static inline int
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
return atomic_futex_op_cmpxchg_inatomic(uval, uaddr, oldval, newval);

9
arch/sh/include/asm/uaccess.h
View File

@ -18,7 +18,7 @@
*/
#define __access_ok(addr, size) \
(__addr_ok((addr) + (size)))
#define access_ok(type, addr, size) \
#define access_ok(addr, size) \
(__chk_user_ptr(addr), \
__access_ok((unsigned long __force)(addr), (size)))
@ -66,7 +66,7 @@ struct __large_struct { unsigned long buf[100]; };
long __gu_err = -EFAULT; \
unsigned long __gu_val = 0; \
const __typeof__(*(ptr)) *__gu_addr = (ptr); \
if (likely(access_ok(VERIFY_READ, __gu_addr, (size)))) \
if (likely(access_ok(__gu_addr, (size)))) \
__get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
(x) = (__force __typeof__(*(ptr)))__gu_val; \
__gu_err; \
@ -87,7 +87,7 @@ struct __large_struct { unsigned long buf[100]; };
long __pu_err = -EFAULT; \
__typeof__(*(ptr)) __user *__pu_addr = (ptr); \
__typeof__(*(ptr)) __pu_val = x; \
if (likely(access_ok(VERIFY_WRITE, __pu_addr, size))) \
if (likely(access_ok(__pu_addr, size))) \
__put_user_size(__pu_val, __pu_addr, (size), \
__pu_err); \
__pu_err; \
@ -132,8 +132,7 @@ __kernel_size_t __clear_user(void *addr, __kernel_size_t size);
void __user * __cl_addr = (addr); \
unsigned long __cl_size = (n); \
\
if (__cl_size && access_ok(VERIFY_WRITE, \
((unsigned long)(__cl_addr)), __cl_size)) \
if (__cl_size && access_ok(__cl_addr, __cl_size)) \
__cl_size = __clear_user(__cl_addr, __cl_size); \
\
__cl_size; \

8
arch/sh/kernel/signal_32.c
View File

@ -160,7 +160,7 @@ asmlinkage int sys_sigreturn(void)
/* Always make any pending restarted system calls return -EINTR */
current->restart_block.fn = do_no_restart_syscall;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__get_user(set.sig[0], &frame->sc.oldmask)
@ -190,7 +190,7 @@ asmlinkage int sys_rt_sigreturn(void)
/* Always make any pending restarted system calls return -EINTR */
current->restart_block.fn = do_no_restart_syscall;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
@ -272,7 +272,7 @@ static int setup_frame(struct ksignal *ksig, sigset_t *set,
frame = get_sigframe(&ksig->ka, regs->regs[15], sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
return -EFAULT;
err |= setup_sigcontext(&frame->sc, regs, set->sig[0]);
@ -338,7 +338,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
frame = get_sigframe(&ksig->ka, regs->regs[15], sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
return -EFAULT;
err |= copy_siginfo_to_user(&frame->info, &ksig->info);

8
arch/sh/kernel/signal_64.c
View File

@ -259,7 +259,7 @@ asmlinkage int sys_sigreturn(unsigned long r2, unsigned long r3,
/* Always make any pending restarted system calls return -EINTR */
current->restart_block.fn = do_no_restart_syscall;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__get_user(set.sig[0], &frame->sc.oldmask)
@ -293,7 +293,7 @@ asmlinkage int sys_rt_sigreturn(unsigned long r2, unsigned long r3,
/* Always make any pending restarted system calls return -EINTR */
current->restart_block.fn = do_no_restart_syscall;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
@ -379,7 +379,7 @@ static int setup_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs
frame = get_sigframe(&ksig->ka, regs->regs[REG_SP], sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
return -EFAULT;
err |= setup_sigcontext(&frame->sc, regs, set->sig[0]);
@ -465,7 +465,7 @@ static int setup_rt_frame(struct ksignal *kig, sigset_t *set,
frame = get_sigframe(&ksig->ka, regs->regs[REG_SP], sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
if (!access_ok(frame, sizeof(*frame)))
return -EFAULT;
err |= __put_user(&frame->info, &frame->pinfo);

12
arch/sh/kernel/traps_64.c
View File

@ -40,7 +40,7 @@ static int read_opcode(reg_size_t pc, insn_size_t *result_opcode, int from_user_
/* SHmedia */
aligned_pc = pc & ~3;
if (from_user_mode) {
if (!access_ok(VERIFY_READ, aligned_pc, sizeof(insn_size_t))) {
if (!access_ok(aligned_pc, sizeof(insn_size_t))) {
get_user_error = -EFAULT;
} else {
get_user_error = __get_user(opcode, (insn_size_t *)aligned_pc);
@ -180,7 +180,7 @@ static int misaligned_load(struct pt_regs *regs,
if (user_mode(regs)) {
__u64 buffer;
if (!access_ok(VERIFY_READ, (unsigned long) address, 1UL<<width_shift)) {
if (!access_ok((unsigned long) address, 1UL<<width_shift)) {
return -1;
}
@ -254,7 +254,7 @@ static int misaligned_store(struct pt_regs *regs,
if (user_mode(regs)) {
__u64 buffer;
if (!access_ok(VERIFY_WRITE, (unsigned long) address, 1UL<<width_shift)) {
if (!access_ok((unsigned long) address, 1UL<<width_shift)) {
return -1;
}
@ -327,7 +327,7 @@ static int misaligned_fpu_load(struct pt_regs *regs,
__u64 buffer;
__u32 buflo, bufhi;
if (!access_ok(VERIFY_READ, (unsigned long) address, 1UL<<width_shift)) {
if (!access_ok((unsigned long) address, 1UL<<width_shift)) {
return -1;
}
@ -400,7 +400,7 @@ static int misaligned_fpu_store(struct pt_regs *regs,
/* Initialise these to NaNs. */
__u32 buflo=0xffffffffUL, bufhi=0xffffffffUL;
if (!access_ok(VERIFY_WRITE, (unsigned long) address, 1UL<<width_shift)) {
if (!access_ok((unsigned long) address, 1UL<<width_shift)) {
return -1;
}
@ -663,7 +663,7 @@ void do_reserved_inst(unsigned long error_code, struct pt_regs *regs)
/* SHmedia : check for defect. This requires executable vmas
to be readable too. */
aligned_pc = pc & ~3;
if (!access_ok(VERIFY_READ, aligned_pc, sizeof(insn_size_t)))
if (!access_ok(aligned_pc, sizeof(insn_size_t)))
get_user_error = -EFAULT;
else
get_user_error = __get_user(opcode, (insn_size_t *)aligned_pc);

3
arch/sh/mm/gup.c
View File

@ -177,8 +177,7 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
addr = start;
len = (unsigned long) nr_pages << PAGE_SHIFT;
end = start + len;
if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ,
(void __user *)start, len)))
if (unlikely(!access_ok((void __user *)start, len)))
return 0;
/*

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