Zqiang a78cb080fc irq_work: use kasan_record_aux_stack_noalloc() record callstack ... [ Upstream commit 25934fcfb9 ] On PREEMPT_RT kernel and KASAN is enabled. the kasan_record_aux_stack() may call alloc_pages(), and the rt-spinlock will be acquired, if currently in atomic context, will trigger warning: BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 239, name: bootlogd Preemption disabled at: [<ffffffffbab1a531>] rt_mutex_slowunlock+0xa1/0x4e0 CPU: 3 PID: 239 Comm: bootlogd Tainted: G W 5.17.1-rt17-yocto-preempt-rt+ #105 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014 Call Trace: __might_resched.cold+0x13b/0x173 rt_spin_lock+0x5b/0xf0 get_page_from_freelist+0x20c/0x1610 __alloc_pages+0x25e/0x5e0 __stack_depot_save+0x3c0/0x4a0 kasan_save_stack+0x3a/0x50 __kasan_record_aux_stack+0xb6/0xc0 kasan_record_aux_stack+0xe/0x10 irq_work_queue_on+0x6a/0x1c0 pull_rt_task+0x631/0x6b0 do_balance_callbacks+0x56/0x80 __balance_callbacks+0x63/0x90 rt_mutex_setprio+0x349/0x880 rt_mutex_slowunlock+0x22a/0x4e0 rt_spin_unlock+0x49/0x80 uart_write+0x186/0x2b0 do_output_char+0x2e9/0x3a0 n_tty_write+0x306/0x800 file_tty_write.isra.0+0x2af/0x450 tty_write+0x22/0x30 new_sync_write+0x27c/0x3a0 vfs_write+0x3f7/0x5d0 ksys_write+0xd9/0x180 __x64_sys_write+0x43/0x50 do_syscall_64+0x44/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae Fix it by using kasan_record_aux_stack_noalloc() to avoid the call to alloc_pages(). Link: https://lkml.kernel.org/r/20220402142555.2699582-1-qiang1.zhang@intel.com Signed-off-by: Zqiang <qiang1.zhang@intel.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-04-27 14:41:10 +02:00
..
bpf	bpf: Adjust BPF stack helper functions to accommodate skip > 0	2022-04-08 13:59:00 +02:00
cgroup	Merge branch 'for-5.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2022-02-22 16:14:35 -08:00
configs	configs/debug: restore DEBUG_INFO=y for overriding	2022-03-17 11:02:13 -07:00
debug	kdb: Fix the putarea helper function	2022-04-08 13:58:32 +02:00
dma	dma-direct: avoid redundant memory sync for swiotlb	2022-04-20 09:36:27 +02:00
entry	entry: Snapshot thread flags	2021-12-01 00:06:43 +01:00
events	perf/core: Inherit event_caps	2022-04-13 19:27:38 +02:00
futex	Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2022-01-17 05:49:30 +02:00
gcov	gcov: Remove compiler version check	2021-12-02 17:25:21 +09:00
irq	genirq/affinity: Consider that CPUs on nodes can be unbalanced	2022-04-20 09:36:26 +02:00
kcsan	KCSAN updates for v5.17	2022-01-11 09:51:26 -08:00
livepatch	livepatch: Fix build failure on 32 bits processors	2022-04-08 13:58:03 +02:00
locking	locking/lockdep: Iterate lock_classes directly when reading lockdep files	2022-04-08 13:58:39 +02:00
power	PM: suspend: fix return value of __setup handler	2022-04-08 13:57:36 +02:00
printk	printk: fix return value of printk.devkmsg __setup handler	2022-04-08 13:57:50 +02:00
rcu	rcu: Mark writes to the rcu_segcblist structure's ->flags field	2022-04-08 13:58:36 +02:00
sched	sched: Teach the forced-newidle balancer about CPU affinity limitation.	2022-04-13 19:27:42 +02:00
time	timers: Fix warning condition in __run_timers()	2022-04-20 09:36:27 +02:00
trace	tracing: Have type enum modifications copy the strings	2022-04-08 13:58:59 +02:00
.gitignore
acct.c	kernel: remove spurious blkdev.h includes	2021-10-18 06:17:01 -06:00
async.c	Revert "module, async: async_synchronize_full() on module init iff async is used"	2022-02-03 11:20:34 -08:00
audit.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	2022-04-08 13:57:35 +02:00
audit_fsnotify.c	fsnotify: clarify contract for create event hooks	2021-10-27 12:32:34 +02:00
audit_tree.c	audit: use struct_size() helper in kmalloc()	2021-12-14 17:39:42 -05:00
audit_watch.c	\n	2021-11-06 16:43:20 -07:00
auditfilter.c	audit/stable-5.17 PR 20220110	2022-01-11 13:08:21 -08:00
auditsc.c	audit: log AUDIT_TIME_* records only from rules	2022-04-08 13:57:35 +02:00
backtracetest.c
bounds.c
capability.c
cfi.c	cfi: Use rcu_read_{un}lock_sched_notrace	2021-08-11 13:11:12 -07:00
compat.c	arch: remove compat_alloc_user_space	2021-09-08 15:32:35 -07:00
configs.c
context_tracking.c
cpu.c	cpu/hotplug: Remove the 'cpu' member of cpuhp_cpu_state	2022-04-20 09:36:28 +02:00
cpu_pm.c	PM: cpu: Make notifier chain use a raw_spinlock_t	2021-08-16 18:55:32 +02:00
crash_core.c	kernel/crash_core: suppress unknown crashkernel parameter warning	2021-12-25 12:20:55 -08:00
crash_dump.c
cred.c	ucounts: Base set_cred_ucounts changes on the real user	2022-02-17 09:11:02 -06:00
delayacct.c	delayacct: track delays from memory compact	2022-01-20 08:52:55 +02:00
dma.c
exec_domain.c
exit.c	exit: Fix the exit_code for wait_task_zombie	2022-01-08 12:43:57 -06:00
extable.c	extable: use is_kernel_text() helper	2021-11-09 10:02:51 -08:00
fail_function.c
fork.c	mm: refactor vm_area_struct::anon_vma_name usage code	2022-03-05 11:08:32 -08:00
freezer.c
gen_kheaders.sh
groups.c
hung_task.c	hung_task: move hung_task sysctl interface to hung_task.c	2022-01-22 08:33:34 +02:00
iomem.c
irq_work.c	irq_work: use kasan_record_aux_stack_noalloc() record callstack	2022-04-27 14:41:10 +02:00
jump_label.c	jump_label: Fix jump_label_text_reserved() vs __init	2021-07-05 10:46:20 +02:00
kallsyms.c	Livepatching changes for 5.17	2022-01-16 10:08:13 +02:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks	locking/rwlock: Provide RT variant	2021-08-17 17:50:51 +02:00
Kconfig.preempt	preempt: Restore preemption model selection configs	2021-11-11 13:09:33 +01:00
kcov.c	kcov: replace local_irq_save() with a local_lock_t	2021-11-09 10:02:52 -08:00
kexec.c	kexec: avoid compat_alloc_user_space	2021-09-08 15:32:34 -07:00
kexec_core.c	exit: Move oops specific logic from do_exit into make_task_dead	2021-12-13 12:04:45 -06:00
kexec_elf.c
kexec_file.c	memblock: add MEMBLOCK_DRIVER_MANAGED to mimic IORESOURCE_SYSRAM_DRIVER_MANAGED	2021-11-06 13:30:42 -07:00
kexec_internal.h
kheaders.c
kmod.c
kprobes.c	kprobe: move sysctl_kprobes_optimization to kprobes.c	2022-01-22 08:33:36 +02:00
ksysfs.c
kthread.c	Merge branch 'akpm' (patches from Andrew)	2022-01-20 10:41:01 +02:00
latencytop.c
Makefile	static_call: Don't make __static_call_return0 static	2022-04-13 19:27:43 +02:00
module-internal.h	module: add in-kernel support for decompressing	2022-01-11 18:45:02 -08:00
module.c	Revert "module, async: async_synchronize_full() on module init iff async is used"	2022-02-03 11:20:34 -08:00
module_decompress.c	module: fix building with sysfs disabled	2022-02-16 12:51:32 -08:00
module_signature.c
module_signing.c
notifier.c	notifier: Return an error when a callback has already been registered	2021-12-29 10:37:33 +01:00
nsproxy.c	memcg: enable accounting for new namesapces and struct nsproxy	2021-09-03 09:58:12 -07:00
padata.c	padata: Remove repeated verbose license text	2021-08-27 16:30:18 +08:00
panic.c	panic: remove oops_id	2022-01-20 08:52:55 +02:00
params.c	kobject: remove kset from struct kset_uevent_ops callbacks	2021-12-28 11:26:18 +01:00
pid.c	pid: add pidfd_get_task() helper	2021-10-14 13:29:18 +02:00
pid_namespace.c	memcg: enable accounting for new namesapces and struct nsproxy	2021-09-03 09:58:12 -07:00
profile.c	exit: Remove profile_handoff_task	2022-01-08 12:43:57 -06:00
ptrace.c	ptrace: Check PTRACE_O_SUSPEND_SECCOMP permission on PTRACE_SEIZE	2022-04-08 13:57:16 +02:00
range.c
reboot.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2021-11-12 11:53:16 -08:00
regset.c
relay.c
resource.c	kernel/resource: fix kfree() of bootmem memory again	2022-04-08 13:58:23 +02:00
resource_kunit.c
rseq.c	rseq: Remove broken uapi field layout on 32-bit little endian	2022-04-08 13:57:39 +02:00
scftorture.c	scftorture: Always log error message	2021-12-07 16:36:17 -08:00
scs.c	scs: Release kasan vmalloc poison in scs_free process	2021-09-30 09:37:27 +01:00
seccomp.c	seccomp: Invalidate seccomp mode to catch death failures	2022-02-10 19:09:12 -08:00
signal.c	signal: HANDLER_EXIT should clear SIGNAL_UNKILLABLE	2022-02-10 19:08:54 -08:00
smp.c	smp: Fix offline cpu check in flush_smp_call_function_queue()	2022-04-20 09:36:27 +02:00
smpboot.c	smpboot: Replace deprecated CPU-hotplug functions.	2021-08-10 14:57:42 +02:00
smpboot.h
softirq.c	timers/nohz: Last resort update jiffies on nohz_full IRQ entry	2021-12-02 15:07:22 +01:00
stackleak.c	gcc-plugins/stackleak: Use noinstr in favor of notrace	2022-02-03 17:02:21 -08:00
stacktrace.c	stacktrace: move filter_irq_stacks() to kernel/stacktrace.c	2021-11-06 13:30:43 -07:00
static_call.c	static_call: Don't make __static_call_return0 static	2022-04-13 19:27:43 +02:00
static_call_inline.c	static_call: Don't make __static_call_return0 static	2022-04-13 19:27:43 +02:00
stop_machine.c
sys.c	mm: refactor vm_area_struct::anon_vma_name usage code	2022-03-05 11:08:32 -08:00
sys_ni.c	mm/mempolicy: wire up syscall set_mempolicy_home_node	2022-01-15 16:30:30 +02:00
sysctl-test.c
sysctl.c	x86/speculation: Include unprivileged eBPF status in Spectre v2 mitigation reporting	2022-02-21 10:21:47 +01:00
task_work.c
taskstats.c
torture.c	locktorture,rcutorture,torture: Always log error message	2021-12-07 16:36:17 -08:00
tracepoint.c	tracepoint: Fix kerneldoc comments	2021-08-16 11:39:51 -04:00
tsacct.c	taskstats: Cleanup the use of task->exit_code	2022-01-08 12:43:57 -06:00
ucount.c	ucounts: Handle wrapping in is_ucounts_overlimit	2022-02-17 09:11:57 -06:00
uid16.c
uid16.h
umh.c
up.c
user-return-notifier.c
user.c	fs/epoll: use a per-cpu counter for user's watches count	2021-09-08 11:50:27 -07:00
user_namespace.c	ucounts: Fix systemd LimitNPROC with private users regression	2022-02-25 10:40:14 -06:00
usermode_driver.c	Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2021-07-03 11:41:14 -07:00
utsname.c
utsname_sysctl.c
watch_queue.c	watch_queue: Free the page array when watch_queue is dismantled	2022-04-08 13:58:56 +02:00
watchdog.c	watchdog: move watchdog sysctl interface to watchdog.c	2022-01-22 08:33:34 +02:00
watchdog_hld.c
workqueue.c	Merge branch 'workqueue/for-5.16-fixes' into workqueue/for-5.17	2022-01-10 07:54:04 -10:00
workqueue_internal.h	workqueue: Assign a color to barrier work items	2021-08-17 07:49:10 -10:00