rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 ticks this GP) idle=135/1/0x4000000000000000 softirq=11371/11372 fqs=682 (detected by 1, t=10502 jiffies, g=13465, q=2846) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3620 Comm: kworker/0:5 Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: events_power_efficient gc_worker RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:436 [inline] RIP: 0010:lock_is_held_type+0x10a/0x180 kernel/locking/lockdep.c:5667 Code: c0 31 ed 44 39 f0 40 0f 94 c5 eb 05 bd 01 00 00 00 48 c7 c7 a0 3d 8b 8a e8 83 11 00 00 b8 ff ff ff ff 65 0f c1 05 36 28 ce 75 <83> f8 01 75 40 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 RSP: 0018:ffffc90000007c78 EFLAGS: 00000057 RAX: 0000000000000001 RBX: 0000000000000003 RCX: ffff888028508000 RDX: ffff888028508000 RSI: ffffffff8a8b3da0 RDI: ffffffff8ad904c0 RBP: 0000000000000001 R08: ffffffff88819c77 R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000046 R13: ffff888028508000 R14: 00000000ffffffff R15: ffff8880656c4300 FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020404030 CR3: 000000000c68e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_is_held include/linux/lockdep.h:287 [inline] advance_sched+0x69/0x940 net/sched/sch_taprio.c:717 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814 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 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:seqcount_lockdep_reader_access+0x1dc/0x220 include/linux/seqlock.h:106 Code: f8 4d 85 ed 75 16 e8 e3 1f f0 f8 eb 15 e8 dc 1f f0 f8 e8 d7 12 a4 01 4d 85 ed 74 ea e8 cd 1f f0 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: 0018:ffffc90003057a40 EFLAGS: 00000293 RAX: ffffffff88903aa3 RBX: 0000000000000000 RCX: ffff888028508000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90003057af0 R08: ffffffff88903a79 R09: fffffbfff20e242b R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 0000000000000200 R14: 0000000000000046 R15: 1ffff9200060af48 nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:338 [inline] gc_worker+0x30f/0x14b0 net/netfilter/nf_conntrack_core.c:1472 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287