rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=58ec/1/0x4000000000000000 softirq=8471/8472 fqs=3
rcu: 	(detected by 1, t=10502 jiffies, g=6433, q=91 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5157 Comm: syz-executor.0 Not tainted 6.3.0-rc6-syzkaller-00138-g44149752e998 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0x20 kernel/kcov.c:304
Code: 00 00 f3 0f 1e fa 48 8b 0c 24 0f b7 d6 0f b7 f7 bf 03 00 00 00 e9 b8 fe ff ff 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 8b 0c 24 <89> f2 89 fe bf 05 00 00 00 e9 9a fe ff ff 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc90000007e38 EFLAGS: 00000046
RAX: 0000000000000003 RBX: ffff88807b3a5340 RCX: ffffffff817162b7
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000006 R09: 1837c5c4b06f8b89
R10: 352339dea7f1476f R11: 0000000000000000 R12: 1837c5c4b06f8b89
R13: ffff8880b982b900 R14: ffff8880b982b800 R15: 0000000000000001
FS:  0000000002203400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000051c670 CR3: 000000007af98000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1651 [inline]
 __hrtimer_run_queues+0x3d7/0xbe0 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x320/0x7b0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
 __sysvec_apic_timer_interrupt+0x14a/0x430 arch/x86/kernel/apic/apic.c:1113
 sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1107
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x3c/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 f6 87 61 f7 48 89 ef e8 8e f4 61 f7 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> 6f 2c 54 f7 65 8b 05 40 78 01 76 85 c0 74 0a 5b 5d c3 e8 9c 53
RSP: 0018:ffffc900036bf970 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff2299ece
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffffff8c79d180 R08: 0000000000000001 R09: ffffffff914c7b97
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000318
R13: ffffffff8c79d180 R14: 0000000000000000 R15: ffff888075d50080
 rcu_exp_gp_seq_start kernel/rcu/tree_exp.h:22 [inline]
 exp_funnel_lock kernel/rcu/tree_exp.h:331 [inline]
 synchronize_rcu_expedited+0x4cf/0x770 kernel/rcu/tree_exp.h:989
 synchronize_rcu+0x2f1/0x3a0 kernel/rcu/tree.c:3494
 synchronize_net+0x4e/0x60 net/core/dev.c:10753
 packet_release+0xa6e/0xd00 net/packet/af_packet.c:3158
 __sock_release+0xcd/0x290 net/socket.c:653
 sock_close+0x1c/0x20 net/socket.c:1395
 __fput+0x27c/0xa90 fs/file_table.c:321
 task_work_run+0x16f/0x270 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x4178bb
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007ffd040738f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 00000000004178bb
RDX: 0000000000000000 RSI: 0000000000561570 RDI: 0000000000000003
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000001b2d02008c
R10: 00007ffd040739c0 R11: 0000000000000293 R12: 00000000000003e8
R13: 000000000055bf0c R14: 000000000055bf00 R15: 000000000055bf00
 </TASK>
rcu: rcu_preempt kthread starved for 10496 jiffies! g6433 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:28744 pid:15    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5307 [inline]
 __schedule+0xc91/0x5770 kernel/sched/core.c:6625
 schedule+0xde/0x1a0 kernel/sched/core.c:6701
 schedule_timeout+0x14e/0x2b0 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1608
 rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1807
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 1064 Comm: kworker/u4:5 Not tainted 6.3.0-rc6-syzkaller-00138-g44149752e998 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:413 [inline]
RIP: 0010:smp_call_function_many_cond+0x64f/0x13c0 kernel/smp.c:987
Code: 89 ee e8 74 36 0b 00 85 ed 74 48 48 8b 44 24 08 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 03 3a 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 af 0a 00 00 8b 43 08 31
RSP: 0018:ffffc90005137940 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b98407c0 RCX: 0000000000000000
RDX: ffff888020ad6280 RSI: ffffffff8176d20d RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed10173080f9
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005600576973f4 CR3: 000000000c571000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x5a/0xa0 kernel/smp.c:1155
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:1770 [inline]
 text_poke_bp_batch+0x237/0x770 arch/x86/kernel/alternative.c:1970
 text_poke_flush arch/x86/kernel/alternative.c:2161 [inline]
 text_poke_flush arch/x86/kernel/alternative.c:2158 [inline]
 text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2168
 arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
 jump_label_update+0x32f/0x410 kernel/jump_label.c:829
 static_key_enable_cpuslocked+0x1b5/0x270 kernel/jump_label.c:205
 static_key_enable+0x1a/0x20 kernel/jump_label.c:218
 toggle_allocation_gate mm/kfence/core.c:803 [inline]
 toggle_allocation_gate+0xf8/0x230 mm/kfence/core.c:795
 process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
 worker_thread+0x669/0x1090 kernel/workqueue.c:2537
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>