rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=1ecc/1/0x4000000000000000 softirq=11100/11101 fqs=2
rcu: hardirqs softirqs csw/system
rcu: number: 1 3 0
rcu: cputime: 0 10 0 ==> 105020(ms)
rcu: (detected by 1, t=10502 jiffies, g=16697, q=1233 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5170 Comm: kworker/0:5 Not tainted 6.7.0-rc6-next-20231222-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker
RIP: 0010:do_raw_spin_lock+0x1d/0x2b0 kernel/locking/spinlock_debug.c:114
Code: fe ff ff e8 75 90 76 00 e9 1b ff ff ff f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 41 56 41 55 41 54 55 53 48 89 fb 48 83 c7 04 <48> 83 ec 68 48 c7 44 24 08 b3 8a b5 41 48 8d 6c 24 08 48 c7 44 24
RSP: 0018:ffffc90000007220 EFLAGS: 00000086
RAX: dffffc0000000000 RBX: ffffffff92c65510 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8b2f95c0 RDI: ffffffff92c65514
RBP: 0000000000000006 R08: 0000000000000000 R09: fffffbfff1e74b62
R10: ffffffff8f3a5b17 R11: ffffffff8acf3060 R12: 00000000000f6888
R13: ffff88804a953340 R14: 1ffff92000000e52 R15: ffffffff88ad04f0
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9bc4179978 CR3: 0000000026846000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0x42/0x50 kernel/locking/spinlock.c:162
debug_object_activate+0x195/0x540 lib/debugobjects.c:708
debug_hrtimer_activate kernel/time/hrtimer.c:422 [inline]
debug_activate kernel/time/hrtimer.c:477 [inline]
enqueue_hrtimer+0x25/0x320 kernel/time/hrtimer.c:1087
__run_hrtimer kernel/time/hrtimer.c:1705 [inline]
__hrtimer_run_queues+0xa0f/0xc20 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
__sysvec_apic_timer_interrupt+0x10c/0x410 arch/x86/kernel/apic/apic.c:1082
sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:write_comp_data+0x7d/0x80 kernel/kcov.c:262
Code: 00 00 4a 8d 34 dd 28 00 00 00 48 39 f2 72 1b 48 83 c7 01 48 89 38 4c 89 44 30 e0 4c 89 4c 30 e8 4c 89 54 30 f0 4a 89 4c d8 20 66 90 f3 0f 1e fa 48 8b 0c 24 40 0f b6 d6 40 0f b6 f7 31 ff e9
RSP: 0018:ffffc90000007638 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90000007668 RCX: ffffffff813a3ed3
RDX: ffff888023820000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc900000076b0
R13: ffffffff817562b0 R14: ffffc90000007728 R15: ffff888023820000
unwind_get_return_address+0x83/0xe0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0xbe/0x170 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x50 mm/kasan/common.c:47
kasan_set_track+0x24/0x30 mm/kasan/common.c:61
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:582
poison_slab_object+0x119/0x190 mm/kasan/common.c:233
__kasan_slab_free+0x14/0x30 mm/kasan/common.c:241
kasan_slab_free include/linux/kasan.h:183 [inline]
slab_free_hook mm/slub.c:2121 [inline]
slab_free mm/slub.c:4303 [inline]
kmem_cache_free+0x12e/0x360 mm/slub.c:4367
skb_kfree_head net/core/skbuff.c:984 [inline]
skb_kfree_head net/core/skbuff.c:981 [inline]
skb_free_head+0x17f/0x1b0 net/core/skbuff.c:998
skb_release_data+0x5ba/0x870 net/core/skbuff.c:1028
skb_release_all net/core/skbuff.c:1094 [inline]
__kfree_skb net/core/skbuff.c:1108 [inline]
kfree_skb_reason+0x12d/0x210 net/core/skbuff.c:1144
kfree_skb include/linux/skbuff.h:1246 [inline]
ip6_mc_input+0x7a9/0xf40 net/ipv6/ip6_input.c:589
dst_input include/net/dst.h:461 [inline]
ip6_rcv_finish net/ipv6/ip6_input.c:79 [inline]
NF_HOOK include/linux/netfilter.h:314 [inline]
NF_HOOK include/linux/netfilter.h:308 [inline]
ipv6_rcv+0x244/0x380 net/ipv6/ip6_input.c:310
__netif_receive_skb_one_core+0x115/0x180 net/core/dev.c:5534
__netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5648
process_backlog+0x101/0x6b0 net/core/dev.c:5976
__napi_poll.constprop.0+0xb4/0x540 net/core/dev.c:6576
napi_poll net/core/dev.c:6645 [inline]
net_rx_action+0x956/0xe90 net/core/dev.c:6778
__do_softirq+0x216/0x8d5 kernel/softirq.c:553
do_softirq kernel/softirq.c:454 [inline]
do_softirq+0xaa/0xe0 kernel/softirq.c:441
__local_bh_enable_ip+0xfc/0x120 kernel/softirq.c:381
spin_unlock_bh include/linux/spinlock.h:396 [inline]
ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline]
wg_packet_encrypt_worker+0x27d/0xbb0 drivers/net/wireguard/send.c:293
process_one_work+0x8a4/0x15f0 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b6/0x1290 kernel/workqueue.c:2787
kthread+0x2c1/0x3a0 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 10498 jiffies! g16697 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:28256 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf15/0x5c80 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe7/0x270 kernel/sched/core.c:6817
schedule_timeout+0x136/0x290 kernel/time/timer.c:2183
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:1631
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:1830
kthread+0x2c1/0x3a0 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:
CPU: 1 PID: 5304 Comm: kworker/u4:14 Not tainted 6.7.0-rc6-next-20231222-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x4e4/0x1570 kernel/smp.c:855
Code: 0b 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 f4 4c 89 f5 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 7e c5 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 44 0e 00 00 8b 43 08 31
RSP: 0018:ffffc9000553f920 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9844840 RCX: ffffffff817c4e68
RDX: ffff88808c2fd940 RSI: ffffffff817c4e42 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed1017308909
R13: 0000000000000001 R14: ffff8880b9844848 R15: ffff8880b993dec0
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f79cd1e6870 CR3: 000000000cf78000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1023
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2086 [inline]
text_poke_bp_batch+0x22b/0x750 arch/x86/kernel/alternative.c:2296
text_poke_flush arch/x86/kernel/alternative.c:2487 [inline]
text_poke_flush arch/x86/kernel/alternative.c:2484 [inline]
text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2494
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x1d7/0x400 kernel/jump_label.c:829
static_key_enable_cpuslocked+0x1b7/0x270 kernel/jump_label.c:205
static_key_enable+0x1a/0x20 kernel/jump_label.c:218
toggle_allocation_gate mm/kfence/core.c:826 [inline]
toggle_allocation_gate+0xf4/0x250 mm/kfence/core.c:818
process_one_work+0x8a4/0x15f0 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b6/0x1290 kernel/workqueue.c:2787
kthread+0x2c1/0x3a0 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