rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10499 ticks this GP) idle=970c/1/0x4000000000000000 softirq=123828/134028 fqs=0
rcu: 	(t=10500 jiffies g=191985 q=48 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g191985 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=176663
rcu: rcu_preempt kthread starved for 10500 jiffies! g191985 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28600 pid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0xee1/0x59f0 kernel/sched/core.c:6695
 schedule+0xe7/0x1b0 kernel/sched/core.c:6771
 schedule_timeout+0x157/0x2c0 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x1ec/0xa50 kernel/rcu/tree.c:1613
 rcu_gp_kthread+0x249/0x380 kernel/rcu/tree.c:1812
 kthread+0x33a/0x430 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
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: 30117 Comm: syz-executor.1 Not tainted 6.5.0-next-20230906-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x2c/0x70 kernel/locking/spinlock.c:194
Code: 1e fa 55 48 89 f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 36 c4 25 f7 48 89 df e8 0e 43 26 f7 f7 c5 00 02 00 00 75 1f 9c 58 <f6> c4 02 75 2f bf 01 00 00 00 e8 85 aa 17 f7 65 8b 05 26 e0 c0 75
RSP: 0018:ffffc90000007e28 EFLAGS: 00000046
RAX: 0000000000000046 RBX: ffff8880b982b940 RCX: ffffffff81691fe3
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff8880b982b940
RBP: 0000000000000046 R08: 0000000000000000 R09: ffffed1017305728
R10: ffff8880b982b943 R11: ffffc90000007ff8 R12: ffff8880b982b940
R13: 17823f56b2f70000 R14: ffff888034112340 R15: ffffffff88656310
FS:  0000555555d92480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 000000001b899000 CR4: 00000000003506f0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1684 [inline]
 __hrtimer_run_queues+0x58b/0xc10 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x3f0 arch/x86/kernel/apic/apic.c:1080
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1074
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:finish_task_switch.isra.0+0x220/0xc90 kernel/sched/core.c:5254
Code: 0a 00 00 44 8b 0d f0 27 73 0d 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 ff f8 ff ff e8 4a 64 33 00 fb 65 48 8b 1c 25 c0 bc 03 00 <48> 8d bb d0 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc9000365f930 EFLAGS: 00000246
RAX: 0000000000000003 RBX: ffff88801fbb9dc0 RCX: 1ffffffff1d9cbca
RDX: 0000000000000000 RSI: ffffffff8ae929e0 RDI: ffffffff815b3676
RBP: ffffc9000365f978 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8ece28d7 R11: 0000000000000001 R12: ffff8880b983d458
R13: ffff8880260dd940 R14: 0000000000000000 R15: ffff8880b983c700
 context_switch kernel/sched/core.c:5385 [inline]
 __schedule+0xee9/0x59f0 kernel/sched/core.c:6695
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6864
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
 class_preempt_destructor include/linux/preempt.h:467 [inline]
 try_to_wake_up+0x9c2/0x15b0 kernel/sched/core.c:4201
 wake_up_process kernel/sched/core.c:4478 [inline]
 wake_up_q+0x91/0x140 kernel/sched/core.c:1029
 futex_wake+0x3f5/0x4a0 kernel/futex/waitwake.c:184
 do_futex+0x234/0x350 kernel/futex/syscalls.c:111
 __do_sys_futex kernel/futex/syscalls.c:183 [inline]
 __se_sys_futex kernel/futex/syscalls.c:164 [inline]
 __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:164
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f505187cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdaf444698 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f505187cae9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f505199bf88
RBP: 0000000000000048 R08: 00007f505199bf8c R09: 00007f505199bf8c
R10: 00007f5051400210 R11: 0000000000000246 R12: 00007f505199bf80
R13: 0000000000000093 R14: 0000000000000000 R15: 00007f505199bf80
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 30117 Comm: syz-executor.1 Not tainted 6.5.0-next-20230906-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:write_comp_data+0x21/0x90 kernel/kcov.c:236
Code: 2e 0f 1f 84 00 00 00 00 00 65 8b 05 21 d9 7b 7e 49 89 f1 89 c6 49 89 d2 81 e6 00 01 00 00 49 89 f8 65 48 8b 14 25 c0 bc 03 00 <a9> 00 01 ff 00 74 0e 85 f6 74 59 8b 82 f4 15 00 00 85 c0 74 4f 8b
RSP: 0018:ffffc90000007e38 EFLAGS: 00000046
RAX: 0000000080010001 RBX: ffff8880b982ba40 RCX: ffffffff8176d287
RDX: ffff88801fbb9dc0 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffffc90000007ff8 R12: ffff8880b982b940
R13: 0000000000000001 R14: ffff888034112340 R15: 0000000000000001
FS:  0000555555d92480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 000000001b899000 CR4: 00000000003506f0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 trace_hrtimer_expire_exit include/trace/events/timer.h:286 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x2a7/0xc10 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x3f0 arch/x86/kernel/apic/apic.c:1080
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1074
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:finish_task_switch.isra.0+0x220/0xc90 kernel/sched/core.c:5254
Code: 0a 00 00 44 8b 0d f0 27 73 0d 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 ff f8 ff ff e8 4a 64 33 00 fb 65 48 8b 1c 25 c0 bc 03 00 <48> 8d bb d0 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc9000365f930 EFLAGS: 00000246
RAX: 0000000000000003 RBX: ffff88801fbb9dc0 RCX: 1ffffffff1d9cbca
RDX: 0000000000000000 RSI: ffffffff8ae929e0 RDI: ffffffff815b3676
RBP: ffffc9000365f978 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8ece28d7 R11: 0000000000000001 R12: ffff8880b983d458
R13: ffff8880260dd940 R14: 0000000000000000 R15: ffff8880b983c700
 context_switch kernel/sched/core.c:5385 [inline]
 __schedule+0xee9/0x59f0 kernel/sched/core.c:6695
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6864
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
 class_preempt_destructor include/linux/preempt.h:467 [inline]
 try_to_wake_up+0x9c2/0x15b0 kernel/sched/core.c:4201
 wake_up_process kernel/sched/core.c:4478 [inline]
 wake_up_q+0x91/0x140 kernel/sched/core.c:1029
 futex_wake+0x3f5/0x4a0 kernel/futex/waitwake.c:184
 do_futex+0x234/0x350 kernel/futex/syscalls.c:111
 __do_sys_futex kernel/futex/syscalls.c:183 [inline]
 __se_sys_futex kernel/futex/syscalls.c:164 [inline]
 __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:164
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f505187cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdaf444698 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f505187cae9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f505199bf88
RBP: 0000000000000048 R08: 00007f505199bf8c R09: 00007f505199bf8c
R10: 00007f5051400210 R11: 0000000000000246 R12: 00007f505199bf80
R13: 0000000000000093 R14: 0000000000000000 R15: 00007f505199bf80
 </TASK>
CPU: 1 PID: 15850 Comm: kworker/u4:9 Not tainted 6.5.0-next-20230906-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:300 [inline]
RIP: 0010:smp_call_function_many_cond+0x4d6/0x1570 kernel/smp.c:844
Code: 0b 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 fc 4c 89 fd 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 0c 8f 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 3c 0e 00 00 8b 43 08 31
RSP: 0018:ffffc9000347f928 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9844180 RCX: 0000000000000000
RDX: ffff88803bea5940 RSI: ffffffff817c5a74 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed1017308831
R13: 0000000000000001 R14: ffff8880b993d8c0 R15: ffff8880b9844188
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000a008 CR3: 000000000c976000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1012
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:1990 [inline]
 text_poke_bp_batch+0x2ce/0x960 arch/x86/kernel/alternative.c:2200
 text_poke_flush arch/x86/kernel/alternative.c:2391 [inline]
 text_poke_flush arch/x86/kernel/alternative.c:2388 [inline]
 text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2398
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 jump_label_update+0x32e/0x410 kernel/jump_label.c:829
 static_key_disable_cpuslocked+0x154/0x1b0 kernel/jump_label.c:235
 static_key_disable+0x1a/0x20 kernel/jump_label.c:243
 toggle_allocation_gate mm/kfence/core.c:835 [inline]
 toggle_allocation_gate+0x13f/0x250 mm/kfence/core.c:822
 process_one_work+0x887/0x15d0 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784
 kthread+0x33a/0x430 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>