rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=16f4/1/0x4000000000000000 softirq=18266/18295 fqs=31
	(detected by 1, t=10505 jiffies, g=20673, q=1612 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4986 Comm: kworker/0:10 Not tainted 6.1.92-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: events_power_efficient gc_worker
RIP: 0010:check_preemption_disabled+0x0/0x110 lib/smp_processor_id.c:13
Code: c0 7a 1c 8d 48 89 de e8 8e 67 d8 f9 e9 6d ff ff ff cc cc cc cc cc cc cc cc cc 48 c7 c7 80 45 3d 8b 48 c7 c6 c0 45 3d 8b eb 00 <41> 57 41 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89
RSP: 0000:ffffc90000007ad8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 1ffff92000000f72 RCX: ffffffff816a8827
RDX: 0000000000000000 RSI: ffffffff8aec0ea0 RDI: ffffffff8b3d45e0
RBP: ffffc90000007c10 R08: dffffc0000000000 R09: fffffbfff1ce712e
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000f68
R13: 0000000000000046 R14: ffffc90000007b90 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2cb38000 CR3: 000000000ce8e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lockdep_recursion_inc kernel/locking/lockdep.c:462 [inline]
 lock_release+0x19e/0xa20 kernel/locking/lockdep.c:5681
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
 _raw_spin_unlock_irqrestore+0x75/0x130 kernel/locking/spinlock.c:194
 debug_object_activate+0x2f9/0x4e0 lib/debugobjects.c:715
 debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline]
 debug_activate kernel/time/hrtimer.c:475 [inline]
 enqueue_hrtimer+0x30/0x410 kernel/time/hrtimer.c:1084
 __run_hrtimer kernel/time/hrtimer.c:1703 [inline]
 __hrtimer_run_queues+0x728/0xe50 kernel/time/hrtimer.c:1750
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:seqcount_lockdep_reader_access+0x1dc/0x220 include/linux/seqlock.h:105
Code: f8 4d 85 ed 75 16 e8 13 86 c6 f8 eb 15 e8 0c 86 c6 f8 e8 d7 00 c7 01 4d 85 ed 74 ea e8 fd 85 c6 f8 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3c 00 00 00 00 66 43 c7 44 3c 09 00 00 43 c6 44 3c 0b 00
RSP: 0000:ffffc9000358fa40 EFLAGS: 00000293
RAX: ffffffff88c40753 RBX: 0000000000000000 RCX: ffff888074bd3b80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000358faf0 R08: ffffffff88c40729 R09: fffffbfff2093856
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000200 R14: 0000000000000046 R15: 1ffff920006b1f48
 nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:343 [inline]
 gc_worker+0x325/0x1530 net/netfilter/nf_conntrack_core.c:1503
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: rcu_preempt kthread starved for 10339 jiffies! g20673 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:27032 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x142d/0x4550 kernel/sched/core.c:6558
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x28d/0x320 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: 6308 Comm: syz-executor.0 Not tainted 6.1.92-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:csd_lock_wait kernel/smp.c:424 [inline]
RIP: 0010:smp_call_function_many_cond+0x1fb5/0x3460 kernel/smp.c:998
Code: e6 01 31 ff e8 ec 42 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 0a e8 77 3f 0b 00 e9 1b ff ff ff f3 90 42 0f b6 04 2b <84> c0 75 14 41 f7 07 01 00 00 00 0f 84 fe fe ff ff e8 55 3f 0b 00
RSP: 0018:ffffc90004757480 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff1101730859d RCX: 0000000000040000
RDX: ffffc90011486000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90004757860 R08: ffffffff817f4dc4 R09: fffffbfff2093845
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000800000000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880b9842ce8
FS:  00007f702dab36c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f702da92d58 CR3: 0000000075d0c000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1166
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:1334 [inline]
 text_poke_bp_batch+0x5f9/0x940 arch/x86/kernel/alternative.c:1596
 text_poke_flush arch/x86/kernel/alternative.c:1725 [inline]
 text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1732
 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
 static_key_slow_inc_cpuslocked+0x12a/0x220 kernel/jump_label.c:144
 static_key_slow_inc+0x16/0x20 kernel/jump_label.c:159
 tcp_alloc_md5sig_pool+0x89/0xa0 net/ipv4/tcp.c:4509
 tcp_md5_do_add+0x2a9/0x5f0 net/ipv4/tcp_ipv4.c:1222
 tcp_v4_parse_md5_keys+0x4c5/0x780 net/ipv4/tcp_ipv4.c:1326
 do_tcp_setsockopt+0xbf9/0x2320 net/ipv4/tcp.c:3758
 __sys_setsockopt+0x57e/0xa00 net/socket.c:2283
 __do_sys_setsockopt net/socket.c:2294 [inline]
 __se_sys_setsockopt net/socket.c:2291 [inline]
 __x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2291
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f702cc7cee9
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:00007f702dab30c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f702cdb4050 RCX: 00007f702cc7cee9
RDX: 000000000000000e RSI: 0000000000000006 RDI: 0000000000000008
RBP: 00007f702ccc947f R08: 00000000000000d8 R09: 0000000000000000
R10: 00000000200004c0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f702cdb4050 R15: 00007ffd92326f88
 </TASK>