rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (10500 ticks this GP) idle=89d/1/0x4000000000000000 softirq=30836/30840 fqs=0
(t=10502 jiffies g=45589 q=786)
rcu: rcu_preempt kthread starved for 10503 jiffies! g45589 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:28896 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1955
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2128
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11271 Comm: syz-executor.1 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kasan_check_range+0xe/0x180 mm/kasan/generic.c:188
Code: 38 8b 48 8d 4a ff 83 e2 01 48 0f 45 c1 48 89 c7 e8 17 c9 ec ff 0f 0b 0f 1f 44 00 00 48 85 f6 0f 84 3c 01 00 00 49 89 f9 41 54 <44> 0f b6 c2 49 01 f1 55 53 0f 82 18 01 00 00 48 b8 ff ff ff ff ff
RSP: 0018:ffffc90000007bf0 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff8880b9c2a418 RCX: ffffffff815b87d6
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8ff77a08
RBP: 0000000000000058 R08: 0000000000000001 R09: ffffffff8ff77a08
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88801a2c2c60
R13: ffff88801a2c2200 R14: 0000000000044000 R15: 00000000000c4058
FS: 00007f81faa00700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2dd23000 CR3: 0000000024f84000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
hlock_class kernel/locking/lockdep.c:199 [inline]
check_wait_context kernel/locking/lockdep.c:4700 [inline]
__lock_acquire+0x3e6/0x54a0 kernel/locking/lockdep.c:4977
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
_raw_spin_lock_irq+0x32/0x50 kernel/locking/spinlock.c:170
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x243/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:preempt_count_add+0x8/0x140 kernel/sched/core.c:5427
Code: 06 00 48 89 ef e8 38 57 07 00 48 89 ee 48 8b 3d be c7 41 0c 5d e9 38 a8 6d 00 0f 1f 84 00 00 00 00 00 48 c7 c0 c0 59 4c 90 55 <48> ba 00 00 00 00 00 fc ff df 48 89 c1 53 83 e0 07 89 fb 48 c1 e9
RSP: 0018:ffffc900111074a0 EFLAGS: 00000202
RAX: ffffffff904c59c0 RBX: 00007f81fc08ae99 RCX: 1ffffffff1b219f0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 00007f81fc08ae99 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8100741e R11: 000000000008808a R12: ffffc900111075c0
R13: 0000000000000000 R14: ffff88801a2c2200 R15: 0000000000000001
is_module_text_address+0x10/0x50 kernel/module.c:4751
kernel_text_address kernel/extable.c:118 [inline]
kernel_text_address+0x31/0x60 kernel/extable.c:93
__kernel_text_address+0x9/0x30 kernel/extable.c:78
unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline]
unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313
arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc mm/kasan/common.c:513 [inline]
____kasan_kmalloc mm/kasan/common.c:472 [inline]
__kasan_kmalloc+0xa6/0xd0 mm/kasan/common.c:522
kasan_kmalloc include/linux/kasan.h:269 [inline]
kmem_cache_alloc_trace+0x1ea/0x4a0 mm/slab.c:3575
kmalloc include/linux/slab.h:590 [inline]
tty_alloc_file drivers/tty/tty_io.c:187 [inline]
tty_open+0x140/0x1000 drivers/tty/tty_io.c:2140
chrdev_open+0x266/0x770 fs/char_dev.c:414
do_dentry_open+0x4c8/0x1250 fs/open.c:822
do_open fs/namei.c:3426 [inline]
path_openat+0x1cad/0x2750 fs/namei.c:3559
do_filp_open+0x1aa/0x400 fs/namei.c:3586
do_sys_openat2+0x16d/0x4d0 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_sys_openat fs/open.c:1244 [inline]
__se_sys_openat fs/open.c:1239 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1239
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f81fc08ae99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f81faa00168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f81fc19df60 RCX: 00007f81fc08ae99
RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007f81fc0e4ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffb3760bdf R14: 00007f81faa00300 R15: 0000000000022000
NMI backtrace for cpu 1
CPU: 1 PID: 11270 Comm: syz-executor.2 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343
print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
rcu_pending kernel/rcu/tree.c:3878 [inline]
rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2597
update_process_times+0x16d/0x200 kernel/time/timer.c:1785
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1428
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:166 [inline]
RIP: 0010:unwind_next_frame+0x2dc/0x1ce0 arch/x86/kernel/unwind_orc.c:443
Code: 24 30 89 4c 24 28 44 89 5c 24 20 e8 0e 29 89 00 48 8b 54 24 38 48 8b 74 24 30 8b 4c 24 28 44 8b 5c 24 20 8b 14 95 50 c6 a9 8e <89> c8 48 8d 3c 40 4c 8d 84 3f 4c d4 06 8e 83 c2 01 49 81 f8 50 c6
RSP: 0018:ffffc900107df430 EFLAGS: 00000246
RAX: 0000000000000003 RBX: 1ffff920020fbe8e RCX: 00000000001a3545
RDX: 00000000001a354d RSI: 0000000000084435 RDI: ffffffff8ecad728
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: fffff520020fbeac R11: 000000000008808a R12: ffffc900107df550
R13: ffffc900107df53d R14: ffffc900107df508 R15: ffffffff894435a4
arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc mm/kasan/common.c:513 [inline]
____kasan_kmalloc mm/kasan/common.c:472 [inline]
__kasan_kmalloc+0xa6/0xd0 mm/kasan/common.c:522
kasan_kmalloc include/linux/kasan.h:269 [inline]
kmem_cache_alloc_trace+0x1ea/0x4a0 mm/slab.c:3575
kmalloc include/linux/slab.h:590 [inline]
tty_alloc_file drivers/tty/tty_io.c:187 [inline]
tty_open+0x140/0x1000 drivers/tty/tty_io.c:2140
chrdev_open+0x266/0x770 fs/char_dev.c:414
do_dentry_open+0x4c8/0x1250 fs/open.c:822
do_open fs/namei.c:3426 [inline]
path_openat+0x1cad/0x2750 fs/namei.c:3559
do_filp_open+0x1aa/0x400 fs/namei.c:3586
do_sys_openat2+0x16d/0x4d0 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_sys_openat fs/open.c:1244 [inline]
__se_sys_openat fs/open.c:1239 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1239
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f463d2b9e99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f463bc2f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f463d3ccf60 RCX: 00007f463d2b9e99
RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007f463d313ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc49f9031f R14: 00007f463bc2f300 R15: 0000000000022000
sched: RT throttling activated
----------------
Code disassembly (best guess):
0: 38 8b 48 8d 4a ff cmp %cl,-0xb572b8(%rbx)
6: 83 e2 01 and $0x1,%edx
9: 48 0f 45 c1 cmovne %rcx,%rax
d: 48 89 c7 mov %rax,%rdi
10: e8 17 c9 ec ff callq 0xffecc92c
15: 0f 0b ud2
17: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
1c: 48 85 f6 test %rsi,%rsi
1f: 0f 84 3c 01 00 00 je 0x161
25: 49 89 f9 mov %rdi,%r9
28: 41 54 push %r12
* 2a: 44 0f b6 c2 movzbl %dl,%r8d <-- trapping instruction
2e: 49 01 f1 add %rsi,%r9
31: 55 push %rbp
32: 53 push %rbx
33: 0f 82 18 01 00 00 jb 0x151
39: 48 rex.W
3a: b8 ff ff ff ff mov $0xffffffff,%eax
3f: ff .byte 0xff