rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P126/1:b..l
	(detected by 1, t=10503 jiffies, g=98081, q=408 ncpus=2)
task:kworker/1:2     state:R  running task     stack:24944 pid:126   ppid:2      flags:0x00004000
Workqueue: events_power_efficient gc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561
 preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
 irqentry_exit+0x63/0x70 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:seqcount_lockdep_reader_access+0x17b/0x1c0 include/linux/seqlock.h:105
Code: f9 4d 85 e4 75 16 e8 14 ed 1e f9 eb 15 e8 0d ed 1e f9 e8 a8 e8 b5 01 4d 85 e4 74 ea e8 fe ec 1e f9 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 66 43 c7 44 3e 09 00 00 43 c6 44 3e 0b 00
RSP: 0018:ffffc90002657a20 EFLAGS: 00000293
RAX: ffffffff8861e962 RBX: 0000000000000000 RCX: ffff88801bfa1dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002657ad0 R08: dffffc0000000000 R09: fffffbfff215c45b
R10: fffffbfff215c45b R11: 1ffffffff215c45a R12: 0000000000000200
R13: ffffffff9700dea0 R14: 1ffff920004caf44 R15: dffffc0000000000
 nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:354 [inline]
 gc_worker+0x30c/0x13d0 net/netfilter/nf_conntrack_core.c:1517
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: rcu_preempt kthread starved for 10529 jiffies! g98081 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:27904 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561
 preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
 irqentry_exit+0x63/0x70 kernel/entry/common.c:439
 asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:696
RIP: 0010:rcu_gp_fqs_loop+0x2a4/0x1310 kernel/rcu/tree.c:1706
Code: 00 00 48 8b 44 24 68 80 3c 30 00 74 0d 48 8d bc 24 d0 00 00 00 e8 1c ad 64 00 48 8d 84 24 c8 00 00 00 48 89 84 24 d0 00 00 00 <48> c7 c7 58 07 b3 8c 48 8d b4 24 c0 00 00 00 ba 02 04 00 00 e8 e3
RSP: 0018:ffffc90000157cc0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88813feb5940
RDX: 0000000000000000 RSI: fffffffffffffffb RDI: 0000000000000000
RBP: ffffc90000157e10 R08: dffffc0000000000 R09: ffffc90000157a60
R10: fffff5200002af5c R11: 1ffff9200002af4c R12: 0000000000000000
R13: ffffc90000067700 R14: ffffc90000157d88 R15: 0000000000000000
 rcu_gp_kthread+0x95/0x380 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 18079 Comm: syz.0.3220 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0033:0x7fa897f85e67
Code: 0b e9 68 fe ff ff 48 83 c4 18 48 8d 3d 32 6a d9 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 13 f8 fb ff 0f 1f 00 b8 27 00 00 00 0f 05 <c3> 0f 1f 84 00 00 00 00 00 b8 6e 00 00 00 0f 05 c3 0f 1f 84 00 00
RSP: 002b:00007fa898e03b08 EFLAGS: 00000202
RAX: 00000000000000a3 RBX: 00007fa898e03c70 RCX: 00007fa897f85e67
RDX: 00007fa898e03b40 RSI: 00007fa898e03c70 RDI: 0000000000000021
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007fa8981e6038 R14: 00007ffc2eaa5ed0 R15: 00007ffc2eaa5fb8
FS:  00007fa898e046c0 GS:  0000000000000000