rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...0: (1 GPs behind) idle=1ed/1/0x4000000000000000 softirq=387979/387980 fqs=3219
(detected by 1, t=10502 jiffies, g=584525, q=302)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 31877 Comm: kworker/0:3 Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_power_efficient gc_worker
RIP: 0010:task_irq_context kernel/locking/lockdep.c:4534 [inline]
RIP: 0010:__lock_acquire+0x331/0x5470 kernel/locking/lockdep.c:4965
Code: 4a a6 7e 85 c0 0f 95 c0 48 c1 e9 03 83 e6 07 0f b6 0c 11 48 89 f2 0f b6 c0 83 c2 03 01 c0 38 ca 7c 08 84 c9 0f 85 85 12 00 00 <41> 83 bd 44 0a 00 00 01 49 8d 7c 24 24 48 89 fa 83 d8 ff c1 e5 0f
RSP: 0018:ffffc90000007bf8 EFLAGS: 00000046
RAX: 0000000000000002 RBX: ffff888051ec4460 RCX: 0000000000000000
RDX: 0000000000000007 RSI: 0000000000000004 RDI: ffff888051ec44c0
RBP: 0000000000000000 R08: 1ffff1100a3d8895 R09: 0000000000000001
R10: fffffbfff1b250f2 R11: 0000000000000000 R12: ffff888051ec44b0
R13: ffff888051ec3a00 R14: ffff8880b9c2a418 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ed23000 CR3: 000000007f995000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
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:__might_resched+0x2/0x2c0 kernel/sched/core.c:9493
Code: 08 00 00 00 00 48 8b 44 24 78 65 48 2b 04 25 28 00 00 00 75 07 48 83 ec 80 5b 5d c3 e8 f7 c4 f8 07 0f 1f 80 00 00 00 00 41 56 <41> 55 41 54 41 89 f4 be ff ff ff ff 55 48 89 fd 48 c7 c7 c0 45 b8
RSP: 0018:ffffc9001092fc30 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc9001092fbc8
RDX: 0000000000000000 RSI: 00000000000005d4 RDI: ffffffff8ab4a280
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000040000 R15: 0000000000005e77
gc_worker+0x511/0x12b0 net/netfilter/nf_conntrack_core.c:1492
process_one_work+0x9b2/0x1660 kernel/workqueue.c:2298
worker_thread+0x65d/0x1130 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: rcu_preempt kthread starved for 4061 jiffies! g584525 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:28736 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4900 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:
NMI backtrace for cpu 1
CPU: 1 PID: 29597 Comm: kworker/u4:1 Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
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_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:481
print_other_cpu_stall kernel/rcu/tree_stall.h:586 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:729 [inline]
rcu_pending kernel/rcu/tree.c:3878 [inline]
rcu_sched_clock_irq+0x1f7c/0x2150 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:rep_nop arch/x86/include/asm/vdso/processor.h:13 [inline]
RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:18 [inline]
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x450/0xc20 kernel/smp.c:969
Code: d6 7c 0b 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 f4 4c 89 f5 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 90 7a 0b 00 90 41 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 33 06 00 00 8b 43
RSP: 0018:ffffc9000b3af9f8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9c41d60 RCX: 0000000000000000
RDX: ffff888040e15700 RSI: ffffffff816bfc60 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff816bfc86 R11: 0000000000000000 R12: ffffed10173883ad
R13: 0000000000000000 R14: ffff8880b9c41d68 R15: 0000000000000001
on_each_cpu_cond_mask+0x56/0xa0 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+0x355/0x560 arch/x86/kernel/alternative.c:1350
text_poke_flush arch/x86/kernel/alternative.c:1451 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1448 [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
jump_label_update+0x1da/0x400 kernel/jump_label.c:830
static_key_enable_cpuslocked+0x1b1/0x260 kernel/jump_label.c:177
static_key_enable+0x16/0x20 kernel/jump_label.c:190
toggle_allocation_gate mm/kfence/core.c:734 [inline]
toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:726
process_one_work+0x9b2/0x1660 kernel/workqueue.c:2298
worker_thread+0x65d/0x1130 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 4a a6 rex.WX cmpsb %es:(%rdi),%ds:(%rsi)
2: 7e 85 jle 0xffffff89
4: c0 0f 95 rorb $0x95,(%rdi)
7: c0 48 c1 e9 rorb $0xe9,-0x3f(%rax)
b: 03 83 e6 07 0f b6 add -0x49f0f81a(%rbx),%eax
11: 0c 11 or $0x11,%al
13: 48 89 f2 mov %rsi,%rdx
16: 0f b6 c0 movzbl %al,%eax
19: 83 c2 03 add $0x3,%edx
1c: 01 c0 add %eax,%eax
1e: 38 ca cmp %cl,%dl
20: 7c 08 jl 0x2a
22: 84 c9 test %cl,%cl
24: 0f 85 85 12 00 00 jne 0x12af
* 2a: 41 83 bd 44 0a 00 00 cmpl $0x1,0xa44(%r13) <-- trapping instruction
31: 01
32: 49 8d 7c 24 24 lea 0x24(%r12),%rdi
37: 48 89 fa mov %rdi,%rdx
3a: 83 d8 ff sbb $0xffffffff,%eax
3d: c1 e5 0f shl $0xf,%ebp