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Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

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Pull ARM fixes from Russell King:
 "This is mainly audit fixes, found by folks who happened to enable this
  feature and then found it broke their user applications."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7414/1: SMP: prevent use of the console when using idmap_pgd
  ARM: 7412/1: audit: use only AUDIT_ARCH_ARM regardless of endianness
  ARM: 7411/1: audit: fix treatment of saved ip register during syscall tracing
  ARM: 7410/1: Add extra clobber registers for assembly in kernel_execve
This commit is contained in:
Linus Torvalds 2012-05-08 11:05:05 -07:00
commit 301cdf5c75
3 changed files with 12 additions and 18 deletions
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24
arch/arm/kernel/ptrace.c
View File

@ -906,27 +906,14 @@ long arch_ptrace(struct task_struct *child, long request,
return ret;
}
#ifdef __ARMEB__
#define AUDIT_ARCH_NR AUDIT_ARCH_ARMEB
#else
#define AUDIT_ARCH_NR AUDIT_ARCH_ARM
#endif
asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno)
{
unsigned long ip;
/*
* Save IP. IP is used to denote syscall entry/exit:
* IP = 0 -> entry, = 1 -> exit
*/
ip = regs->ARM_ip;
regs->ARM_ip = why;
if (!ip)
if (why)
audit_syscall_exit(regs);
else
audit_syscall_entry(AUDIT_ARCH_NR, scno, regs->ARM_r0,
audit_syscall_entry(AUDIT_ARCH_ARM, scno, regs->ARM_r0,
regs->ARM_r1, regs->ARM_r2, regs->ARM_r3);
if (!test_thread_flag(TIF_SYSCALL_TRACE))
@ -936,6 +923,13 @@ asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno)
current_thread_info()->syscall = scno;
/*
* IP is used to denote syscall entry/exit:
* IP = 0 -> entry, =1 -> exit
*/
ip = regs->ARM_ip;
regs->ARM_ip = why;
/* the 0x80 provides a way for the tracing parent to distinguish
between a syscall stop and SIGTRAP delivery */
ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)

4
arch/arm/kernel/smp.c
View File

@ -251,8 +251,6 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
struct mm_struct *mm = &init_mm;
unsigned int cpu = smp_processor_id();
printk("CPU%u: Booted secondary processor\n", cpu);
/*
* All kernel threads share the same mm context; grab a
* reference and switch to it.
@ -264,6 +262,8 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
enter_lazy_tlb(mm, current);
local_flush_tlb_all();
printk("CPU%u: Booted secondary processor\n", cpu);
cpu_init();
preempt_disable();
trace_hardirqs_off();

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

@ -115,7 +115,7 @@ int kernel_execve(const char *filename,
"Ir" (THREAD_START_SP - sizeof(regs)),
"r" (&regs),
"Ir" (sizeof(regs))
: "r0", "r1", "r2", "r3", "ip", "lr", "memory");
: "r0", "r1", "r2", "r3", "r8", "r9", "ip", "lr", "memory");
out:
return ret;