rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=4841, q=29 ncpus=2)
task:kworker/0:0 state:R running task stack:25136 pid:8 tgid:8 ppid:2 flags:0x00004000
Workqueue: events_power_efficient gc_worker
Call Trace:
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_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:654
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 df 19 8f e8 8b 41 b5 f8 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 09 ba d4 f8 48 85 db 58 0f 85 9f 10 00 00 6a be d4 f8 eb 07 e8 63 be d4 f8 f3 90 44 8b 35 8a 2b 67 06 31
RSP: 0018:ffffc900000d7bf0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff88b2bf2d
RDX: ffff888017e45940 RSI: ffffffff88b2bf3c RDI: 0000000000000007
RBP: ffff88801bc00000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000003 R12: 000000000000b97b
R13: dffffc0000000000 R14: 00000000000172f5 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
rcu: rcu_preempt kthread starved for 10511 jiffies! g4841 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:29088 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
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
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: 5111 Comm: syz-executor404 Not tainted 6.7.0-rc6-syzkaller-00078-ga4aebe936554 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:__lock_acquire+0xc89/0x3b20 kernel/locking/lockdep.c:5134
Code: e7 e8 eb 52 ff ff 48 ba 00 00 00 00 00 fc ff df 48 8d 78 40 48 89 f9 48 c1 e9 03 80 3c 11 00 0f 85 98 2b 00 00 48 83 78 40 00 <0f> 84 7c 13 00 00 0f b7 44 24 08 8b 5c 24 48 8b 4c 24 20 c1 e0 0d
RSP: 0018:ffffc900001f0cd8 EFLAGS: 00000082
RAX: ffffffff91f207f0 RBX: 0000000000000000 RCX: 1ffffffff23e4106
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff91f20830
RBP: 0000000000000040 R08: 0000000000000000 R09: fffffbfff23e35d1
R10: ffffffff91f1ae8f R11: 0000000000000000 R12: ffff88807d32c640
R13: 0000000000000002 R14: 0000000000000069 R15: 0000000000000002
FS: 0000555555e8e3c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002006b000 CR3: 0000000077bf8000 CR4: 0000000000350ef0
Call Trace:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162
hrtimer_interrupt+0x10e/0x800 kernel/time/hrtimer.c:1795
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
__sysvec_apic_timer_interrupt+0x105/0x400 arch/x86/kernel/apic/apic.c:1082
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
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 8a 8e e4 f6 48 89 df e8 f2 05 e5 f6 e8 9d c1 0a f7 fb bf 01 00 00 00 32 bf d6 f6 65 8b 05 63 56 80 75 85 c0 74 02 5b c3 e8 30 1a 7d
RSP: 0018:ffffc90004427d00 EFLAGS: 00000206
RAX: 0000000003abd403 RBX: ffff888025155c80 RCX: 1ffffffff1e32039
RDX: 0000000000000000 RSI: ffffffff8accaec0 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8f193457 R11: 0000000000000000 R12: ffff888025156118
R13: 0000000000000021 R14: ffff888025156080 R15: 1ffff92000884faf
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: 0033:0x7fba727e3e79
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 18 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:00007ffd5ff6c368 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007fba727e3e79
RDX: 000000002006b000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000555555e8e370
R13: 0000000000000005 R14: 00007ffd5ff6c3e0 R15: 00007ffd5ff6c3d0