rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P1240/1:b..l
	(detected by 1, t=10502 jiffies, g=37373, q=456)
task:kworker/u4:5    state:R  running task     stack:22552 pid: 1240 ppid:     2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5026 [inline]
 __schedule+0x12c4/0x4590 kernel/sched/core.c:6372
 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6776
 irqentry_exit+0x53/0x80 kernel/entry/common.c:426
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:217 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x4/0x80 kernel/kcov.c:284
Code: 89 f8 89 f6 48 c7 44 0a 08 03 00 00 00 48 89 44 0a 10 48 89 74 0a 18 4c 89 44 0a 20 49 ff c1 4c 89 09 c3 0f 1f 00 4c 8b 04 24 <65> 48 8b 15 b4 6b 82 7e 65 8b 05 b5 6b 82 7e a9 00 01 ff 00 74 10
RSP: 0018:ffffc9000558fa58 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffff88801d7d3b80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000558fb70 R08: ffffffff88bc9fe1 R09: fffffbfff1f7a621
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000000750b4
R13: 1ffff1100a6c0202 R14: ffffffff917c8340 R15: dffffc0000000000
 rcu_read_unlock include/linux/rcupdate.h:725 [inline]
 inet_twsk_purge+0x8f1/0xa20 net/ipv4/inet_timewait_sock.c:299
 ops_exit_list net/core/net_namespace.c:174 [inline]
 cleanup_net+0x763/0xb60 net/core/net_namespace.c:596
 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2307
 worker_thread+0xaca/0x1280 kernel/workqueue.c:2454
 kthread+0x3f6/0x4f0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g37373 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=15753
rcu: rcu_preempt kthread starved for 10500 jiffies! g37373 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:27000 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5026 [inline]
 __schedule+0x12c4/0x4590 kernel/sched/core.c:6372
 schedule+0x11b/0x1f0 kernel/sched/core.c:6455
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1884
 rcu_gp_fqs_loop+0x2af/0xf70 kernel/rcu/tree.c:1959
 rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2132
 kthread+0x3f6/0x4f0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </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: 8246 Comm: syz-executor.2 Not tainted 5.15.120-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:40 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:75 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:107 [inline]
RIP: 0010:lock_release+0x174/0x9a0 kernel/locking/lockdep.c:5638
Code: c7 84 24 b0 00 00 00 00 00 00 00 9c 8f 84 24 b0 00 00 00 42 80 3c 3b 00 74 08 4c 89 f7 e8 84 d9 66 00 48 8b 9c 24 b0 00 00 00 <fa> 48 c7 c7 60 0b 8b 8a e8 4f 28 b9 08 65 ff 05 e8 e3 9f 7e 48 8d
RSP: 0018:ffffc90000007b60 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000046 RCX: ffffffff81629438
RDX: 0000000000000000 RSI: ffffffff8ad86260 RDI: ffffffff8ad86220
RBP: ffffc90000007ca0 R08: dffffc0000000000 R09: fffffbfff1bc7e0e
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000f78
R13: ffffffff886ae4bb R14: ffffc90000007c10 R15: dffffc0000000000
FS:  000055555556d400(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f48901098c2 CR3: 000000007d47d000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline]
 _raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:403 [inline]
 advance_sched+0x68b/0x940 net/sched/sch_taprio.c:765
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:extract_string fs/d_path.c:20 [inline]
RIP: 0010:d_absolute_path+0x191/0x300 fs/d_path.c:237
Code: 18 48 8d 74 24 40 4c 89 fa e8 1b f3 ff ff 89 c3 bf 01 00 00 00 89 c6 e8 0d d6 9c ff 83 fb 02 0f 8d c4 00 00 00 48 8b 7c 24 08 <48> 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 14 01 00 00 8b 5c
RSP: 0018:ffffc90004a3f960 EFLAGS: 00000297
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff88804da88000
RDX: ffff88804da88000 RSI: 0000000000000001 RDI: ffffc90004a3f9c8
RBP: ffffc90004a3fa40 R08: ffffffff81e32df3 R09: fffffbfff1bc7e0e
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807ee76ffd
R13: dffffc0000000000 R14: 1ffff92000947f38 R15: ffffc90004a3f9c0
 tomoyo_get_absolute_path security/tomoyo/realpath.c:101 [inline]
 tomoyo_realpath_from_path+0x2fd/0x5e0 security/tomoyo/realpath.c:276
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x273/0x6b0 security/tomoyo/file.c:822
 tomoyo_path_symlink+0xda/0x110 security/tomoyo/tomoyo.c:199
 security_path_symlink+0xd9/0x130 security/security.c:1179
 do_symlinkat+0x129/0x600 fs/namei.c:4382
 __do_sys_symlinkat fs/namei.c:4404 [inline]
 __se_sys_symlinkat fs/namei.c:4401 [inline]
 __x64_sys_symlinkat+0x95/0xa0 fs/namei.c:4401
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f4890086bb7
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0a 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe988e4d68 EFLAGS: 00000202 ORIG_RAX: 000000000000010a
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4890086bb7
RDX: 00007f48900d253f RSI: 00000000ffffff9c RDI: 00007ffe988e4e30
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffe988e4c00
R10: 00007ffe988e4ab7 R11: 0000000000000202 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe988e4e30
 </TASK>