rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (0 ticks this GP) idle=d6e4/1/0x4000000000000000 softirq=12810/12810 fqs=1
rcu: (detected by 0, t=10502 jiffies, g=17045, q=308 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 45 Comm: kworker/1:1 Not tainted 6.9.0-syzkaller-08414-g7ee332c9f12b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: events_power_efficient gc_worker
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:26 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:67 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:127 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xaf/0x140 kernel/locking/spinlock.c:194
Code: 02 00 00 74 05 e8 41 d6 0a f6 4c 89 f3 48 c1 eb 03 42 80 3c 23 00 74 08 4c 89 f7 e8 9b a6 68 f6 48 c7 44 24 20 00 00 00 00 9c <8f> 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 8e a5 68 f6 f6 44 24
RSP: 0018:ffffc90000a17d78 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff92000142fb4 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff94973000
RBP: ffffc90000a17e10 R08: ffffffff94973003 R09: 1ffffffff292e600
R10: dffffc0000000000 R11: fffffbfff292e601 R12: dffffc0000000000
R13: 1ffff92000142fb0 R14: ffffc90000a17da0 R15: 0000000000000046
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3495bded58 CR3: 000000005ea6a000 CR4: 0000000000350ef0
Call Trace:
debug_object_deactivate+0x2d5/0x390 lib/debugobjects.c:778
debug_hrtimer_deactivate kernel/time/hrtimer.c:428 [inline]
debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:484
__run_hrtimer kernel/time/hrtimer.c:1655 [inline]
__hrtimer_run_queues+0x30f/0xd50 kernel/time/hrtimer.c:1751
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x112/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rcu_lockdep_current_cpu_online+0x18/0x120 kernel/rcu/tree.c:4657
Code: 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 53 65 8b 0d 88 26 87 7e b0 01 f7 c1 00 00 f0 00 <0f> 85 d5 00 00 00 83 3d 43 2f 30 0e 00 0f 84 c8 00 00 00 65 ff 05
RSP: 0018:ffffc90000a182a8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000080000100
RDX: ffff88801b68bc00 RSI: ffffffff8c1fabc0 RDI: ffffffff8c1fab80
RBP: 1ffff1100d07af73 R08: ffffffff89e4570d R09: 1ffffffff296ab4f
R10: dffffc0000000000 R11: fffffbfff296ab50 R12: dffffc0000000000
R13: ffff888021f7b000 R14: ffff8880683d7b98 R15: ffff8880683d7b40
rcu_read_lock_held_common kernel/rcu/update.c:113 [inline]
rcu_read_lock_held+0x1e/0x50 kernel/rcu/update.c:349
__in_dev_get_rcu include/linux/inetdevice.h:235 [inline]
ip_rcv_finish_core+0x51a/0x1b40 net/ipv4/ip_input.c:370
ip_list_rcv_finish net/ipv4/ip_input.c:613 [inline]
ip_sublist_rcv+0x3b1/0xab0 net/ipv4/ip_input.c:639
ip_list_rcv+0x42b/0x480 net/ipv4/ip_input.c:674
__netif_receive_skb_list_ptype net/core/dev.c:5667 [inline]
__netif_receive_skb_list_core+0x95a/0x980 net/core/dev.c:5715
__netif_receive_skb_list net/core/dev.c:5767 [inline]
netif_receive_skb_list_internal+0xa51/0xe30 net/core/dev.c:5859
gro_normal_list include/net/gro.h:515 [inline]
napi_complete_done+0x310/0x8e0 net/core/dev.c:6202
virtqueue_napi_complete drivers/net/virtio_net.c:655 [inline]
virtnet_poll+0xd68/0x18c0 drivers/net/virtio_net.c:2370
__napi_poll+0xcd/0x490 net/core/dev.c:6721
napi_poll net/core/dev.c:6790 [inline]
net_rx_action+0x7bb/0x10a0 net/core/dev.c:6906
handle_softirqs+0x2d8/0x990 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
common_interrupt+0xaa/0xd0 arch/x86/kernel/irq.c:278
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:seqcount_lockdep_reader_access+0x1e0/0x220 include/linux/seqlock.h:75
Code: f7 4d 85 ed 75 16 e8 cf cf f4 f7 eb 15 e8 c8 cf f4 f7 e8 23 6b e6 01 4d 85 ed 74 ea e8 b9 cf f4 f7 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:ffffc90000b579a0 EFLAGS: 00000293
RAX: ffffffff89a16197 RBX: 0000000000000000 RCX: ffff88801b68bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000b57a50 R08: ffffffff89a1616d R09: 1ffffffff25f3ac1
R10: dffffc0000000000 R11: fffffbfff25f3ac2 R12: dffffc0000000000
R13: 0000000000000200 R14: 0000000000000046 R15: 1ffff9200016af34
nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:345 [inline]
gc_worker+0x316/0x1530 net/netfilter/nf_conntrack_core.c:1488
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: rcu_preempt kthread starved for 10495 jiffies! g17045 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:26320 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2582
rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:2000
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 3708 Comm: kworker/u8:7 Not tainted 6.9.0-syzkaller-08414-g7ee332c9f12b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x1899/0x2a00 kernel/smp.c:855
Code: 89 e6 83 e6 01 31 ff e8 75 0c 0c 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 20 08 0c 00 eb 38 f3 90 42 0f b6 04 23 <84> c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 04 08 0c 00 eb e4 44
RSP: 0018:ffffc9000b2176e0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 1ffff110172a8879 RCX: ffff88802d3a0000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000b2178e0 R08: ffffffff818a291b R09: 1ffffffff25f3ab0
R10: dffffc0000000000 R11: fffffbfff25f3ab1 R12: dffffc0000000000
R13: ffff8880b95443c8 R14: ffff8880b943f780 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000e132000 CR4: 0000000000350ef0
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2069 [inline]
text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2279
text_poke_flush arch/x86/kernel/alternative.c:2470 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2477
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:205
static_key_enable+0x1a/0x20 kernel/jump_label.c:218
toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:826
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244