rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P3623/1:b..l
	(detected by 0, t=10502 jiffies, g=7485, q=99 ncpus=2)
task:kworker/0:6     state:R  running task     stack:23544 pid:3623  ppid:2      flags:0x00004000
Workqueue: events_power_efficient gc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x142d/0x4550 kernel/sched/core.c:6558
 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
 irqentry_exit+0x53/0x80 kernel/entry/common.c:439
 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: 0018:ffffc9000445fa40 EFLAGS: 00000293
RAX: ffffffff88c40753 RBX: 0000000000000000 RCX: ffff88801f1e0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000445faf0 R08: ffffffff88c40729 R09: fffffbfff2093856
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000200 R14: 0000000000000046 R15: 1ffff9200088bf48
 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 10500 jiffies! g7485 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:27000 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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3773 Comm: syz-executor.2 Not tainted 6.1.92-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:llist_add_batch+0xb7/0x1d0 lib/llist.c:32
Code: 48 c1 e9 03 48 89 4c 24 28 4c 89 7c 24 38 48 89 44 24 18 4c 8b 7c 24 38 80 3c 18 00 74 08 4c 89 e7 e8 1d ba aa fd 4d 8b 2c 24 <41> 80 3c 1e 00 74 0a 48 8d 7c 24 60 e8 88 ba aa fd 4c 89 6c 24 60
RSP: 0018:ffffc90004d97480 EFLAGS: 00000046
RAX: 1ffff110173267f7 RBX: dffffc0000000000 RCX: 1ffff110173267b1
RDX: ffffc9000ab21000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90004d97550 R08: ffffffff81975f3e R09: ffffed10173267b3
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9933fb8
R13: 0000000000000000 R14: 1ffff920009b2e9c R15: ffff8880b9933d88
FS:  00007f591f4e76c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32d2c000 CR3: 000000002135e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 llist_add include/linux/llist.h:221 [inline]
 __irq_work_queue_local+0xa6/0x180 kernel/irq_work.c:97
 irq_work_queue+0xa3/0x150 kernel/irq_work.c:114
 bpf_send_signal_common+0x2ba/0x420 kernel/trace/bpf_trace.c:878
 ____bpf_send_signal kernel/trace/bpf_trace.c:887 [inline]
 bpf_send_signal+0x15/0x20 kernel/trace/bpf_trace.c:885
 bpf_prog_9fbc3d1d47c9b36c+0x1a/0x21
 bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline]
 __bpf_prog_run include/linux/filter.h:603 [inline]
 bpf_prog_run include/linux/filter.h:610 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline]
 bpf_trace_run1+0x1d9/0x3d0 kernel/trace/bpf_trace.c:2311
 trace_rcu_utilization+0x1e5/0x230 include/trace/events/rcu.h:27
 rcu_note_context_switch+0xc5/0xf30 kernel/rcu/tree_plugin.h:318
 __schedule+0x32e/0x4550 kernel/sched/core.c:6458
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 futex_wait_queue+0x149/0x1d0 kernel/futex/waitwake.c:355
 futex_wait+0x203/0x5c0 kernel/futex/waitwake.c:656
 do_futex+0x3b5/0x490 kernel/futex/syscalls.c:106
 __do_sys_futex kernel/futex/syscalls.c:183 [inline]
 __se_sys_futex+0x3d7/0x460 kernel/futex/syscalls.c:164
 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: 0033:0x7f591e67cf69
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:00007f591f4e7178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f591e7b3f88 RCX: 00007f591e67cf69
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f591e7b3f88
RBP: 00007f591e7b3f80 R08: 00007f591f4e76c0 R09: 00007f591f4e76c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f591e7b3f8c
R13: 000000000000000b R14: 00007ffe670af8a0 R15: 00007ffe670af988
 </TASK>