rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (10499 ticks this GP) idle=575/1/0x4000000000000000 softirq=155863/155863 fqs=62
(t=10500 jiffies g=290805 q=398)
rcu: rcu_preempt kthread starved for 10371 jiffies! g290805 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 970 Comm: kworker/u4:4 Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0xbb7/0xda0 kernel/smp.c:969
Code: e8 fe b7 0b 00 41 83 e7 01 49 bf 00 00 00 00 00 fc ff df 75 0e e8 d9 b3 0b 00 eb 4c 0f 1f 80 00 00 00 00 f3 90 42 0f b6 04 3b <84> c0 75 11 41 f7 45 00 01 00 00 00 74 2b e8 b6 b3 0b 00 eb e4 44
RSP: 0018:ffffc90004b67820 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 1ffff1101734831d RCX: ffff88801caed700
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90004b67960 R08: ffffffff8178c1b2 R09: ffffffff846038d0
R10: 0000000000000009 R11: ffff88801caed700 R12: 0000000000000000
R13: ffff8880b9a418e8 R14: ffff8880b9b3a640 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5c11fbc718 CR3: 000000000ca8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1135
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1112 [inline]
text_poke_bp_batch+0x310/0x940 arch/x86/kernel/alternative.c:1297
text_poke_flush arch/x86/kernel/alternative.c:1451 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1458
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x12d/0x250 kernel/jump_label.c:177
static_key_enable+0x16/0x20 kernel/jump_label.c:190
toggle_allocation_gate+0xbf/0x460 mm/kfence/core.c:732
process_one_work+0x853/0x1140 kernel/workqueue.c:2298
worker_thread+0xac1/0x1320 kernel/workqueue.c:2445
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
NMI backtrace for cpu 0
CPU: 0 PID: 15009 Comm: syz-executor.5 Not tainted 5.16.0-rc1-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_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 92 af a5 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 d7 7f 2f f7 65 8b 05 d8 db d7 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc900000079e0 EFLAGS: 00000206
RAX: 2111c08905ad0000 RBX: 1ffff92000000f40 RCX: ffffffff81665dc1
RDX: dffffc0000000000 RSI: 0000000000000102 RDI: 0000000000000001
RBP: ffffc90000007a70 R08: dffffc0000000000 R09: fffffbfff2034df8
R10: fffffbfff2034df8 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff92000000f3c R14: ffffc90000007a00 R15: 0000000000000246
__mod_timer+0x98d/0xd20 kernel/time/timer.c:1065
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:generic_exec_single+0x33b/0x4c0 kernel/smp.c:532
Code: 04 1e 84 c0 0f 85 64 01 00 00 41 c7 45 00 00 00 00 00 b8 fa ff ff ff eb 08 e8 41 c4 0b 00 fb 31 c0 48 c7 44 24 20 0e 36 e0 45 <4a> c7 04 3b 00 00 00 00 66 42 c7 44 3b 09 00 00 42 c6 44 3b 0b 00
RSP: 0018:ffffc90012b979a0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000040000
RDX: ffffc9001581e000 RSI: 0000000000000272 RDI: 0000000000000273
RBP: ffffc90012b97a70 R08: ffffffff8178b0cd R09: fffffbfff2034dfb
R10: fffffbfff2034dfb R11: 0000000000000000 R12: 0000000000000200
R13: ffffc90012b97ae8 R14: 0000000000000046 R15: 1ffff92002572f38
smp_call_function_single+0x255/0x570 kernel/smp.c:755
task_function_call kernel/events/core.c:119 [inline]
perf_install_in_context+0x6eb/0xaa0 kernel/events/core.c:2918
__do_sys_perf_event_open kernel/events/core.c:12409 [inline]
__se_sys_perf_event_open+0x2fa4/0x4280 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: 0033:0x7f5c14b0cae9
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:00007f5c12082188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f5c14c1ff60 RCX: 00007f5c14b0cae9
RDX: ff7fffffffffffff RSI: 0000000000000000 RDI: 0000000020000700
RBP: 00007f5c14b66f6d R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcc8b2920f R14: 00007f5c12082300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: e8 fe b7 0b 00 callq 0xbb803
5: 41 83 e7 01 and $0x1,%r15d
9: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15
10: fc ff df
13: 75 0e jne 0x23
15: e8 d9 b3 0b 00 callq 0xbb3f3
1a: eb 4c jmp 0x68
1c: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
23: f3 90 pause
25: 42 0f b6 04 3b movzbl (%rbx,%r15,1),%eax
* 2a: 84 c0 test %al,%al <-- trapping instruction
2c: 75 11 jne 0x3f
2e: 41 f7 45 00 01 00 00 testl $0x1,0x0(%r13)
35: 00
36: 74 2b je 0x63
38: e8 b6 b3 0b 00 callq 0xbb3f3
3d: eb e4 jmp 0x23
3f: 44 rex.R