Mathieu Desnoyers c17a6ff932 rseq: Kill process when unknown flags are encountered in ABI structures ... rseq_abi()->flags and rseq_abi()->rseq_cs->flags 29 upper bits are currently unused. The current behavior when those bits are set is to ignore them. This is not an ideal behavior, because when future features will start using those flags, if user-space fails to correctly validate that the kernel indeed supports those flags (e.g. with a new sys_rseq flags bit) before using them, it may incorrectly assume that the kernel will handle those flags way when in fact those will be silently ignored on older kernels. Validating that unused flags bits are cleared will allow a smoother transition when those flags will start to be used by allowing applications to fail early, and obviously, when they attempt to use the new flags on an older kernel that does not support them. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lkml.kernel.org/r/20220622194617.1155957-2-mathieu.desnoyers@efficios.com		2022-08-01 15:21:42 +02:00
..
bpf	bpf: Fix calling global functions from BPF_PROG_TYPE_EXT programs	2022-06-07 10:41:20 -07:00
cgroup	sched/core: add forced idle accounting for cgroups	2022-07-04 09:23:07 +02:00
configs	x86/configs: Add x86 debugging Kconfig fragment plus docs	2022-04-06 19:56:29 +02:00
debug	Modules updates for v5.19-rc1	2022-05-26 17:13:43 -07:00
dma	swiotlb: fix setting ->force_bounce	2022-06-02 07:17:59 +02:00
entry	* Fix syzkaller NULL pointer dereference	2022-06-08 09:16:31 -07:00
events	Two small perf updates:	2022-06-05 10:40:31 -07:00
futex	drm for 5.19-rc1	2022-05-25 16:18:27 -07:00
gcov	gcov: Remove compiler version check	2021-12-02 17:25:21 +09:00
irq	Updates for interrupt core and drivers:	2022-05-23 16:58:49 -07:00
kcsan	linux-kselftest-kunit-5.19-rc1	2022-05-25 11:32:53 -07:00
livepatch	Livepatching changes for 5.19	2022-06-02 08:55:01 -07:00
locking	sysctl changes for v5.19-rc1	2022-05-26 16:57:20 -07:00
module	module: Fix prefix for module.sig_enforce module param	2022-06-02 12:44:33 -07:00
power	cxl for 5.19	2022-05-27 21:24:19 -07:00
printk	Revert "printk: wake up all waiters"	2022-05-27 13:04:46 +02:00
rcu	sysctl changes for v5.19-rc1	2022-05-26 16:57:20 -07:00
sched	sched/core: Fix the bug that task won't enqueue into core tree when update cookie	2022-07-21 10:39:39 +02:00
time	While looking at the ptrace problems with PREEMPT_RT and the problems	2022-06-03 16:13:25 -07:00
trace	Networking fixes for 5.19-rc2, including fixes from bpf and netfilter.	2022-06-09 12:06:52 -07:00
.gitignore
acct.c	kernel/acct: move acct sysctls to its own file	2022-04-06 13:43:44 -07:00
async.c	Revert "module, async: async_synchronize_full() on module init iff async is used"	2022-02-03 11:20:34 -08:00
audit_fsnotify.c	fsnotify: make allow_dups a property of the group	2022-04-25 14:37:18 +02:00
audit_tree.c	audit: use fsnotify group lock helpers	2022-04-25 14:37:28 +02:00
audit_watch.c	fsnotify: pass flags argument to fsnotify_alloc_group()	2022-04-25 14:37:12 +02:00
audit.c	audit: improve audit queue handling when "audit=1" on cmdline	2022-01-25 13:22:51 -05:00
audit.h	audit: log AUDIT_TIME_* records only from rules	2022-02-22 13:51:40 -05:00
auditfilter.c	audit/stable-5.17 PR 20220110	2022-01-11 13:08:21 -08:00
auditsc.c	audit,io_uring,io-wq: call __audit_uring_exit for dummy contexts	2022-05-17 15:03:36 -04:00
backtracetest.c
bounds.c
capability.c	xfs: don't generate selinux audit messages for capability testing	2022-03-09 10:32:06 -08:00
cfi.c
compat.c
configs.c
context_tracking.c
cpu_pm.c
cpu.c	Intel Trust Domain Extensions	2022-05-23 17:51:12 -07:00
crash_core.c	Not a lot of material this cycle. Many singleton patches against various	2022-05-27 11:22:03 -07:00
crash_dump.c
cred.c	x86: Mark __invalid_creds() __noreturn	2022-03-15 10:32:44 +01:00
delayacct.c	delayacct: track delays from write-protect copy	2022-06-01 15:55:25 -07:00
dma.c
exec_domain.c
exit.c	ptrace: Cleanups for v5.18	2022-03-28 17:29:53 -07:00
extable.c	lkdtm: Really write into kernel text in WRITE_KERN	2022-02-16 23:25:12 +11:00
fail_function.c
fork.c	This set of changes updates init and user mode helper tasks to be	2022-06-03 16:03:05 -07:00
freezer.c
gen_kheaders.sh	kheaders: Have cpio unconditionally replace files	2022-05-08 03:16:59 +09:00
groups.c
hung_task.c	Not a lot of material this cycle. Many singleton patches against various	2022-05-27 11:22:03 -07:00
iomem.c
irq_work.c	irq_work: use kasan_record_aux_stack_noalloc() record callstack	2022-04-15 14:49:55 -07:00
jump_label.c
kallsyms.c	ftrace: Add ftrace_lookup_symbols function	2022-05-10 14:42:06 -07:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt	Revert "signal, x86: Delay calling signals in atomic on RT enabled kernels"	2022-03-31 10:36:55 +02:00
kcov.c	kcov: update pos before writing pc in trace function	2022-05-25 13:05:42 -07:00
kexec_core.c	Not a lot of material this cycle. Many singleton patches against various	2022-05-27 11:22:03 -07:00
kexec_elf.c
kexec_file.c	RISC-V Patches for the 5.19 Merge Window, Part 1	2022-05-31 14:10:54 -07:00
kexec_internal.h
kexec.c
kheaders.c
kmod.c
kprobes.c	tracing updates for 5.19:	2022-05-29 10:31:36 -07:00
ksysfs.c	kernel/ksysfs.c: use helper macro __ATTR_RW	2022-03-23 19:00:33 -07:00
kthread.c	kthread: unexport kthread_blkcg	2022-05-02 14:06:20 -06:00
latencytop.c	latencytop: move sysctl to its own file	2022-04-21 11:40:59 -07:00
Makefile	kernel: add platform_has() infrastructure	2022-06-06 08:06:00 +02:00
module_signature.c
notifier.c	notifier: Add blocking/atomic_notifier_chain_register_unique_prio()	2022-05-19 19:30:30 +02:00
nsproxy.c
padata.c	padata: replace cpumask_weight with cpumask_empty in padata.c	2022-01-31 11:21:46 +11:00
panic.c	sysctl changes for v5.19-rc1	2022-05-26 16:57:20 -07:00
params.c	kobject: remove kset from struct kset_uevent_ops callbacks	2021-12-28 11:26:18 +01:00
pid_namespace.c	kernel: pid_namespace: use NULL instead of using plain integer as pointer	2022-04-29 14:38:00 -07:00
pid.c
platform-feature.c	kernel: add platform_has() infrastructure	2022-06-06 08:06:00 +02:00
profile.c	exit: Remove profile_handoff_task	2022-01-08 12:43:57 -06:00
ptrace.c	While looking at the ptrace problems with PREEMPT_RT and the problems	2022-06-03 16:13:25 -07:00
range.c
reboot.c	kernel/reboot: Fix powering off using a non-syscall code paths	2022-06-07 19:42:31 +02:00
regset.c
relay.c	relay: remove redundant assignment to pointer buf	2022-05-12 20:38:37 -07:00
resource_kunit.c
resource.c	kernel/resource: fix kfree() of bootmem memory again	2022-03-23 19:00:35 -07:00
rseq.c	rseq: Kill process when unknown flags are encountered in ABI structures	2022-08-01 15:21:42 +02:00
scftorture.c	scftorture: Fix distribution of short handler delays	2022-04-11 17:07:29 -07:00
scs.c	kasan, vmalloc: only tag normal vmalloc allocations	2022-03-24 19:06:48 -07:00
seccomp.c	seccomp: Add wait_killable semantic to seccomp user notifier	2022-05-03 14:11:58 -07:00
signal.c	While looking at the ptrace problems with PREEMPT_RT and the problems	2022-06-03 16:13:25 -07:00
smp.c	Scheduler changes in this cycle were:	2022-05-24 11:11:13 -07:00
smpboot.c	cpu/hotplug: Allow the CPU in CPU_UP_PREPARE state to be brought up again.	2022-04-12 14:13:01 +02:00
smpboot.h
softirq.c	smp: Make softirq handling RT safe in flush_smp_call_function_queue()	2022-05-01 10:03:43 +02:00
stackleak.c	stackleak: add on/off stack variants	2022-05-08 01:33:09 -07:00
stacktrace.c	uaccess: remove CONFIG_SET_FS	2022-02-25 09:36:06 +01:00
static_call_inline.c	static_call: Don't make __static_call_return0 static	2022-04-05 09:59:38 +02:00
static_call.c	static_call: Don't make __static_call_return0 static	2022-04-05 09:59:38 +02:00
stop_machine.c	Scheduler changes in this cycle were:	2022-05-24 11:11:13 -07:00
sys_ni.c	mm/mempolicy: wire up syscall set_mempolicy_home_node	2022-01-15 16:30:30 +02:00
sys.c	arm64/sme: Implement vector length configuration prctl()s	2022-04-22 18:50:54 +01:00
sysctl-test.c
sysctl.c	sysctl changes for v5.19-rc1	2022-05-26 16:57:20 -07:00
task_work.c	task_work: allow TWA_SIGNAL without a rescheduling IPI	2022-04-30 08:39:32 -06:00
taskstats.c	kernel: make taskstats available from all net namespaces	2022-04-29 14:38:03 -07:00
torture.c	torture: Wake up kthreads after storing task_struct pointer	2022-02-01 17:24:39 -08:00
tracepoint.c
tsacct.c	taskstats: version 12 with thread group and exe info	2022-04-29 14:38:03 -07:00
ucount.c	ucounts: Handle wrapping in is_ucounts_overlimit	2022-02-17 09:11:57 -06:00
uid16.c
uid16.h
umh.c	kthread: Don't allocate kthread_struct for init and umh	2022-05-06 14:49:44 -05:00
up.c
user_namespace.c	ucounts: Fix systemd LimitNPROC with private users regression	2022-02-25 10:40:14 -06:00
user-return-notifier.c
user.c
usermode_driver.c	blob_to_mnt(): kern_unmount() is needed to undo kern_mount()	2022-05-19 23:25:47 -04:00
utsname_sysctl.c
utsname.c
watch_queue.c	watch_queue: Free the page array when watch_queue is dismantled	2022-04-02 10:37:39 -07:00
watchdog_hld.c	printk: add functions to prefer direct printing	2022-04-22 21:30:58 +02:00
watchdog.c	Not a lot of material this cycle. Many singleton patches against various	2022-05-27 11:22:03 -07:00
workqueue_internal.h
workqueue.c	workqueue: Wrap flush_workqueue() using a macro	2022-06-07 07:07:14 -10:00