rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (10500 ticks this GP) idle=121/1/0x4000000000000000 softirq=66965/66965 fqs=0
(t=10501 jiffies g=108701 q=178)
rcu: rcu_preempt kthread starved for 10502 jiffies! g108701 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:
NMI backtrace for cpu 0
CPU: 0 PID: 10918 Comm: syz-executor.5 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_check_gp_kthread_starvation+0x1ff/0x270 kernel/rcu/tree_stall.h:481
print_cpu_stall kernel/rcu/tree_stall.h:625 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
rcu_pending kernel/rcu/tree.c:3878 [inline]
rcu_sched_clock_irq+0x1e2e/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+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: 71 54 fd ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 ee ea 61 f7 48 89 df e8 f6 9b 63 f7 e8 41 f3 86 f7 fb bf 01 00 00 00 06 f7 55 f7 65 8b 05 67 7b fe 75 85 c0 74 02 5b c3 0f 1f 44 00
RSP: 0018:ffffc90000007cb0 EFLAGS: 00000282
RAX: 492660256ade6100 RBX: ffff8880b9a280c0 RCX: ffffffff90b8e903
RDX: dffffc0000000000 RSI: 0000000000000102 RDI: 0000000000000001
RBP: ffffc90000007e10 R08: ffffffff818ae7c0 R09: ffffed1017345019
R10: ffffed1017345019 R11: 0000000000000000 R12: ffffffff882e3190
R13: dffffc0000000000 R14: ffff8880b9a28100 R15: ffff88803c7ab010
expire_timers kernel/time/timer.c:1465 [inline]
__run_timers+0x70a/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:lock_acquire+0x21f/0x4d0 kernel/locking/lockdep.c:5641
Code: 08 4c 89 f7 e8 d2 6d 6a 00 f6 84 24 81 00 00 00 02 0f 85 13 02 00 00 41 f7 c4 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 43 c7 44 2f 09 00 00 00 00 43 c7 44 2f 11
RSP: 0018:ffffc9000a99fb40 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92001533f78 RCX: ffff88801f0c0a58
RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000a99fc98 R08: dffffc0000000000 R09: fffffbfff1feedef
R10: fffffbfff1feedef R11: 0000000000000000 R12: 0000000000000246
R13: 1ffff92001533f70 R14: ffffc9000a99fbc0 R15: dffffc0000000000
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:268
rcu_read_lock_sched include/linux/rcupdate.h:780 [inline]
fd_install+0x5f/0x4d0 fs/file.c:578
__do_sys_perf_event_open kernel/events/core.c:12432 [inline]
__se_sys_perf_event_open+0x3d28/0x4280 kernel/events/core.c:12017
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: 0033:0x7f0f83a7fae9
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:00007f0f80ff5188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f0f83b92f60 RCX: 00007f0f83a7fae9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00000000200003c0
RBP: 00007f0f83ad9f6d R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffb1c27a3f R14: 00007f0f80ff5300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 10918 Comm: syz-executor.5 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+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: 71 54 fd ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 ee ea 61 f7 48 89 df e8 f6 9b 63 f7 e8 41 f3 86 f7 fb bf 01 00 00 00 06 f7 55 f7 65 8b 05 67 7b fe 75 85 c0 74 02 5b c3 0f 1f 44 00
RSP: 0018:ffffc90000007cb0 EFLAGS: 00000282
RAX: 492660256ade6100 RBX: ffff8880b9a280c0 RCX: ffffffff90b8e903
RDX: dffffc0000000000 RSI: 0000000000000102 RDI: 0000000000000001
RBP: ffffc90000007e10 R08: ffffffff818ae7c0 R09: ffffed1017345019
R10: ffffed1017345019 R11: 0000000000000000 R12: ffffffff882e3190
R13: dffffc0000000000 R14: ffff8880b9a28100 R15: ffff88803c7ab010
expire_timers kernel/time/timer.c:1465 [inline]
__run_timers+0x70a/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:lock_acquire+0x21f/0x4d0 kernel/locking/lockdep.c:5641
Code: 08 4c 89 f7 e8 d2 6d 6a 00 f6 84 24 81 00 00 00 02 0f 85 13 02 00 00 41 f7 c4 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 43 c7 44 2f 09 00 00 00 00 43 c7 44 2f 11
RSP: 0018:ffffc9000a99fb40 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92001533f78 RCX: ffff88801f0c0a58
RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000a99fc98 R08: dffffc0000000000 R09: fffffbfff1feedef
R10: fffffbfff1feedef R11: 0000000000000000 R12: 0000000000000246
R13: 1ffff92001533f70 R14: ffffc9000a99fbc0 R15: dffffc0000000000
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:268
rcu_read_lock_sched include/linux/rcupdate.h:780 [inline]
fd_install+0x5f/0x4d0 fs/file.c:578
__do_sys_perf_event_open kernel/events/core.c:12432 [inline]
__se_sys_perf_event_open+0x3d28/0x4280 kernel/events/core.c:12017
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: 0033:0x7f0f83a7fae9
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:00007f0f80ff5188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f0f83b92f60 RCX: 00007f0f83a7fae9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00000000200003c0
RBP: 00007f0f83ad9f6d R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffb1c27a3f R14: 00007f0f80ff5300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 71 54 jno 0x56
2: fd std
3: ff 90 53 48 89 fb callq *-0x476b7ad(%rax)
9: 48 83 c7 18 add $0x18,%rdi
d: 48 8b 74 24 08 mov 0x8(%rsp),%rsi
12: e8 ee ea 61 f7 callq 0xf761eb05
17: 48 89 df mov %rbx,%rdi
1a: e8 f6 9b 63 f7 callq 0xf7639c15
1f: e8 41 f3 86 f7 callq 0xf786f365
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 06 f7 55 f7 callq 0xf755f735 <-- trapping instruction
2f: 65 8b 05 67 7b fe 75 mov %gs:0x75fe7b67(%rip),%eax # 0x75fe7b9d
36: 85 c0 test %eax,%eax
38: 74 02 je 0x3c
3a: 5b pop %rbx
3b: c3 retq
3c: 0f .byte 0xf
3d: 1f (bad)
3e: 44 rex.R