rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (1 GPs behind) idle=fd5/1/0x4000000000000000 softirq=121846/121847 fqs=32
(t=10502 jiffies g=223777 q=845)
rcu: rcu_preempt kthread starved for 10439 jiffies! g223777 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:26576 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6250
schedule+0x12b/0x1f0 kernel/sched/core.c:6323
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x1fd/0x770 kernel/rcu/tree.c:1955
rcu_gp_kthread+0xa5/0x350 kernel/rcu/tree.c:2128
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
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: 30027 Comm: syz-executor.3 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0x1b0/0x2b00 kernel/locking/lockdep.c:4921
Code: c7 c0 20 69 b8 90 48 c1 e8 03 8a 04 30 84 c0 0f 85 43 1d 00 00 83 fb 30 72 0d 83 3d 99 b3 52 0f 00 0f 84 c2 1a 00 00 8b 4d 20 <48> c7 c0 00 5b 8b 8f 49 29 c6 49 c1 fe 06 48 ba ab aa aa aa aa aa
RSP: 0018:ffffc900000074c0 EFLAGS: 00000087
RAX: 1ffffffff2170d04 RBX: 0000000000000002 RCX: 0000000000000000
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffff88801b258000
RBP: ffffc90000007610 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1bf9dae R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8f8b9d00 R15: ffff88801b258a58
FS: 00007ff8b46dc700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020400000 CR3: 00000000af3ae000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x19f/0x4d0 kernel/locking/lockdep.c:5625
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
hrtimer_interrupt+0x107/0x1040 kernel/time/hrtimer.c:1792
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:lock_timer_base+0x0/0x270 kernel/time/timer.c:932
Code: df 4c 8b 7c 24 18 4c 8b 64 24 20 e9 53 fc ff ff e8 a5 d4 11 00 0f 0b e8 9e d4 11 00 0f 0b e8 87 e8 8c 08 0f 1f 80 00 00 00 00 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 10 49 89 f6 49 89 ff e8 77
RSP: 0018:ffffc90000007a78 EFLAGS: 00000246
RAX: ffffffff81725ead RBX: ffff888023174828 RCX: ffff88801b258000
RDX: 0000000000000100 RSI: ffffc90000007b20 RDI: ffff888023174810
RBP: ffffc90000007bb0 R08: ffffffff81725de0 R09: fffffbfff1bf9dae
R10: fffffbfff1bf9dae R11: 0000000000000000 R12: 1ffff1100462e903
R13: dffffc0000000000 R14: ffffc90000007b20 R15: ffff888023174810
__mod_timer+0x202/0xd20 kernel/time/timer.c:1019
call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers+0x71a/0x910 kernel/time/timer.c:1734
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747
__do_softirq+0x392/0x7a3 kernel/softirq.c:558
__irq_exit_rcu+0xec/0x170 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:tomoyo_check_acl+0xb1/0x430 security/tomoyo/domain.c:173
Code: 85 05 03 00 00 48 8b 1c 24 4c 8b 23 49 39 dc 0f 84 14 02 00 00 0f 1f 40 00 49 8d 6c 24 18 48 89 e8 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 1d 01 00 00 0f b6 6d 00 31 ff 89 ee e8 1a 42 a9 fd 85
RSP: 0018:ffffc900041dfb80 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: ffff888070bb7590 RCX: 0000000000040000
RDX: ffffc9000fe86000 RSI: 0000000000000c2b RDI: 0000000000000c2c
RBP: ffff88806f692d18 R08: ffffffff83db05c6 R09: ffffffff83dca192
R10: 0000000000000002 R11: ffff88801b258000 R12: ffff88806f692d00
R13: dffffc0000000000 R14: ffff888070bb7580 R15: 0000000000000000
tomoyo_path_number_perm+0x42f/0x7c0 security/tomoyo/file.c:733
security_file_ioctl+0x55/0xb0 security/security.c:1541
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl+0x48/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ff8b71c9ae9
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:00007ff8b46dc188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff8b72dd1a0 RCX: 00007ff8b71c9ae9
RDX: 0000000020000240 RSI: 00000000d000943e RDI: 0000000000000004
RBP: 00007ff8b7223f25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffccbad32bf R14: 00007ff8b46dc300 R15: 0000000000022000
NMI backtrace for cpu 1
CPU: 1 PID: 30011 Comm: syz-executor.3 Not tainted 5.15.0-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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x22d/0x390 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+0x1e33/0x2bc0 kernel/rcu/tree.c:2597
update_process_times+0x197/0x200 kernel/time/timer.c:1785
tick_sched_handle kernel/time/tick-sched.c:226 [inline]
tick_sched_timer+0x27d/0x420 kernel/time/tick-sched.c:1421
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 02 ce cd f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 37 e6 57 f7 65 8b 05 68 6a 00 76 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0000:ffffc9000424f9c0 EFLAGS: 00000206
RAX: 0cb0dee3f7f77100 RBX: 1ffff92000849f3c RCX: ffffffff816634e1
RDX: dffffc0000000000 RSI: 0000000000000101 RDI: 0000000000000001
RBP: ffffc9000424fa48 R08: dffffc0000000000 R09: fffffbfff1feddf8
R10: fffffbfff1feddf8 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff92000849f38 R14: ffffc9000424f9e0 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
skb_dequeue+0x10e/0x140 net/core/skbuff.c:3216
mrp_queue_xmit net/802/mrp.c:363 [inline]
mrp_join_timer+0x405/0x820 net/802/mrp.c:608
call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers+0x71a/0x910 kernel/time/timer.c:1734
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747
__do_softirq+0x392/0x7a3 kernel/softirq.c:558
__irq_exit_rcu+0xec/0x170 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0033:0x7ff8b71667ee
Code: 89 c0 48 01 d7 4c 89 c2 48 01 c6 e9 9c d8 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 54 55 48 89 fd 53 48 81 ec d0 00 00 00 <48> 89 74 24 28 48 89 54 24 30 48 89 4c 24 38 4c 89 44 24 40 4c 89
RSP: 002b:00007ff8b471e0b0 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffffffffffffff RCX: 00007ff8b722519d
RDX: 0000000000124b49 RSI: 000000000000003f RDI: 00007ff8b7234eba
RBP: 00007ff8b7234eba R08: ffffffffffffffff R09: 0000000000000009
R10: 00007ffccbb170b8 R11: 000000000003ff86 R12: 0000000000000000
R13: 00007ffccbad32bf R14: 00007ff8b471e300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: c7 c0 20 69 b8 90 mov $0x90b86920,%eax
6: 48 c1 e8 03 shr $0x3,%rax
a: 8a 04 30 mov (%rax,%rsi,1),%al
d: 84 c0 test %al,%al
f: 0f 85 43 1d 00 00 jne 0x1d58
15: 83 fb 30 cmp $0x30,%ebx
18: 72 0d jb 0x27
1a: 83 3d 99 b3 52 0f 00 cmpl $0x0,0xf52b399(%rip) # 0xf52b3ba
21: 0f 84 c2 1a 00 00 je 0x1ae9
27: 8b 4d 20 mov 0x20(%rbp),%ecx
* 2a: 48 c7 c0 00 5b 8b 8f mov $0xffffffff8f8b5b00,%rax <-- trapping instruction
31: 49 29 c6 sub %rax,%r14
34: 49 c1 fe 06 sar $0x6,%r14
38: 48 rex.W
39: ba ab aa aa aa mov $0xaaaaaaab,%edx
3e: aa stos %al,%es:(%rdi)
3f: aa stos %al,%es:(%rdi)