rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6367/1:b..l P5159/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=12789, q=375 ncpus=2)
task:kworker/1:4     state:R  running task     stack:24688 pid:5159  tgid:5159  ppid:2      flags:0x00004000
Workqueue: events_power_efficient gc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0xedb/0x5af0 kernel/sched/core.c:6688
 preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7008
 irqentry_exit+0x36/0x80 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__seqprop_spinlock_sequence include/linux/seqlock.h:284 [inline]
RIP: 0010:nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:345 [inline]
RIP: 0010:gc_worker+0x2e1/0x17e0 net/netfilter/nf_conntrack_core.c:1490
Code: 00 00 48 c7 c7 08 e8 19 8f e8 8b 31 b5 f8 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 89 aa d4 f8 48 85 db 58 0f 85 9f 10 00 00 <e8> ea ae d4 f8 eb 07 e8 e3 ae d4 f8 f3 90 44 8b 35 8a 24 67 06 31
RSP: 0018:ffffc90004927bf0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff88b2cf2d
RDX: ffff888023e0d940 RSI: ffffffff88b2cf3c RDI: 0000000000000007
RBP: ffff888025a00000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000003 R12: 0000000000001b46
R13: dffffc0000000000 R14: 000000000000368b R15: 0000000000040000
 process_one_work+0x886/0x15d0 kernel/workqueue.c:2627
 process_scheduled_works kernel/workqueue.c:2700 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2781
 kthread+0x2c6/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
task:syz-executor.4  state:R  running task     stack:27888 pid:6367  tgid:6362  ppid:5111   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0xedb/0x5af0 kernel/sched/core.c:6688
 preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7008
 irqentry_exit+0x36/0x80 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x1d/0x60 kernel/kcov.c:207
Code: 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 48 8b 14 25 c0 bc 03 00 65 8b 05 64 4a 7c 7e a9 00 01 ff 00 48 8b 34 24 <74> 0f f6 c4 01 74 35 8b 82 fc 15 00 00 85 c0 74 2b 8b 82 d8 15 00
RSP: 0000:ffffc90014a3fd28 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 0000000000000000 RCX: ffffffff81c9b533
RDX: ffff888017acd940 RSI: ffffffff81c9b901 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801c2a0400
R13: ffffc90014a3fdf8 R14: ffff88801c2a0400 R15: fff0000000000fff
 pte_unmap include/linux/pgtable.h:113 [inline]
 handle_pte_fault mm/memory.c:5033 [inline]
 __handle_mm_fault+0xe81/0x3d70 mm/memory.c:5180
 handle_mm_fault+0x47a/0xa10 mm/memory.c:5345
 do_user_addr_fault+0x30b/0x1000 arch/x86/mm/fault.c:1364
 handle_page_fault arch/x86/mm/fault.c:1505 [inline]
 exc_page_fault+0x5d/0xc0 arch/x86/mm/fault.c:1561
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f0697628806
RSP: 002b:00007f0698350520 EFLAGS: 00010206
RAX: 00000000001cc001 RBX: 00007f06983505c0 RCX: 0000000000000072
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f0698350660
RBP: 0000000000000102 R08: 00007f068ddff000 R09: 00000000001cc000
R10: 0000000000000000 R11: 00007f06983505d0 R12: 0000000000000001
R13: 00007f06976eb620 R14: 0000000000000000 R15: 00007f0698350660
 </TASK>
rcu: rcu_preempt kthread starved for 10552 jiffies! g12789 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:28752 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0xedb/0x5af0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0xe9/0x270 kernel/sched/core.c:6778
 schedule_timeout+0x137/0x290 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x1ec/0xb10 kernel/rcu/tree.c:1631
 rcu_gp_kthread+0x24b/0x380 kernel/rcu/tree.c:1830
 kthread+0x2c6/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 6368 Comm: syz-executor.5 Not tainted 6.7.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 8b 74 24 08 48 89 fb 48 83 c7 18 e8 4a 7b e4 f6 48 89 df e8 32 f3 e4 f6 e8 0d ae 0a f7 fb bf 01 00 00 00 <e8> f2 ab d6 f6 65 8b 05 23 43 80 75 85 c0 74 02 5b c3 e8 f0 06 7d
RSP: 0018:ffffc90014a4fd00 EFLAGS: 00000202
RAX: 000000000227a085 RBX: ffff88803eb5ca00 RCX: 1ffffffff1e32159
RDX: 0000000000000000 RSI: ffffffff8accaea0 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8f193d57 R11: 0000000000000001 R12: ffff88803eb5ce98
R13: 0000000000000021 R14: ffff88803eb5ce00 R15: 1ffff92002949faf
FS:  00007f14547806c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f145477ff00 CR3: 000000007032f000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 get_signal+0x1899/0x2790 kernel/signal.c:2907
 arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x121/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:296
 do_syscall_64+0x4d/0x110 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f1453a7cce9
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:00007f14547800c8 EFLAGS: 00000246
RAX: 0000000000000007 RBX: 00007f1453b9c050 RCX: 00007f1453a7cce9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 00007f1453ac947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f1453b9c050 R15: 00007fffe39a1298
 </TASK>