watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [systemd-timesyn:4949] Modules linked in: irq event stamp: 260008 hardirqs last enabled at (260007): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632 hardirqs last disabled at (260008): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1100 softirqs last enabled at (260006): [] invoke_softirq kernel/softirq.c:221 [inline] softirqs last enabled at (260006): [] __irq_exit_rcu kernel/softirq.c:422 [inline] softirqs last enabled at (260006): [] irq_exit_rcu+0x134/0x200 kernel/softirq.c:434 softirqs last disabled at (259563): [] invoke_softirq kernel/softirq.c:221 [inline] softirqs last disabled at (259563): [] __irq_exit_rcu kernel/softirq.c:422 [inline] softirqs last disabled at (259563): [] irq_exit_rcu+0x134/0x200 kernel/softirq.c:434 CPU: 1 PID: 4949 Comm: systemd-timesyn Not tainted 5.12.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:csd_lock_wait kernel/smp.c:228 [inline] RIP: 0010:smp_call_function_single+0x13e/0x3e0 kernel/smp.c:516 Code: 00 48 8b 44 24 18 44 89 e7 4c 89 74 24 58 48 8d 74 24 40 48 89 44 24 50 e8 2f fc ff ff 41 89 c4 8b 44 24 48 a8 01 74 0a f3 90 <8b> 44 24 48 a8 01 75 f6 bf 01 00 00 00 e8 10 af e7 ff 65 8b 05 e9 RSP: 0018:ffffc9000163faa0 EFLAGS: 00000202 RAX: 0000000000000011 RBX: 1ffff920002c7f58 RCX: 1ffffffff186d211 RDX: 0000000000000000 RSI: ffffffff888ae4a0 RDI: ffffffff88db8780 RBP: ffffc9000163fb78 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed1017406c38 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 FS: 00007fccb0b8f8c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000003059848 CR3: 0000000010723000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smp_call_function_many kernel/smp.c:715 [inline] smp_call_function kernel/smp.c:737 [inline] on_each_cpu+0x3e/0xa0 kernel/smp.c:836 clock_was_set+0x13/0x20 kernel/time/hrtimer.c:871 timekeeping_inject_offset+0x363/0x540 kernel/time/timekeeping.c:1374 do_adjtimex+0x1ad/0x730 kernel/time/timekeeping.c:2395 do_clock_adjtime kernel/time/posix-timers.c:1109 [inline] __do_sys_clock_adjtime+0x11a/0x1f0 kernel/time/posix-timers.c:1121 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fccaff841b7 Code: 73 01 c3 48 8b 0d e1 fc 2a 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 31 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d b1 fc 2a 00 f7 d8 64 89 01 48 RSP: 002b:00007fff60c87748 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 0000563968ed1630 RCX: 00007fccaff841b7 RDX: 0000000000000004 RSI: 00007fff60c87810 RDI: 0000000000000000 RBP: 00007fff60c87810 R08: 0000000000000020 R09: 000000000000000d R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00007fff60c87900 R14: 0000000000000003 R15: 0000000000000001 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8640 Comm: kworker/0:3 Not tainted 5.12.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker RIP: 0010:hlock_class kernel/locking/lockdep.c:198 [inline] RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3586 [inline] RIP: 0010:validate_chain kernel/locking/lockdep.c:3642 [inline] RIP: 0010:__lock_acquire+0x1641/0x57d0 kernel/locking/lockdep.c:4900 Code: 20 66 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 f8 06 48 8d 3c c5 60 88 07 8e e8 77 a5 51 00 48 0f a3 1d df 8d b6 0c <0f> 83 fc 02 00 00 48 bd eb 83 b5 80 46 86 c8 61 49 0f af ee 48 c1 RSP: 0018:ffffc900000066d8 EFLAGS: 00000047 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff8150fa79 RDX: fffffbfff1c0f10d RSI: 0000000000000008 RDI: ffffffff8e078860 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8e078867 R10: fffffbfff1c0f10c R11: 0000000000000001 R12: ffff888023822668 R13: ffff888023821bc0 R14: d0187ff9e10211a2 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000053b038 CR3: 000000001142b000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5510 [inline] lock_acquire+0x1ab/0x730 kernel/locking/lockdep.c:5475 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:159 debug_object_activate+0x12e/0x3e0 lib/debugobjects.c:656 debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline] debug_activate kernel/time/hrtimer.c:475 [inline] enqueue_hrtimer+0x1f/0x2e0 kernel/time/hrtimer.c:964 __run_hrtimer kernel/time/hrtimer.c:1536 [inline] __hrtimer_run_queues+0x878/0xb00 kernel/time/hrtimer.c:1583 hrtimer_interrupt+0x300/0x930 kernel/time/hrtimer.c:1645 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline] __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632 RIP: 0010:lock_is_held_type+0xf6/0x130 kernel/locking/lockdep.c:5554 Code: 60 e4 8a 88 e8 3b 0c 00 00 b8 ff ff ff ff 65 0f c1 05 be cf c4 77 83 f8 01 75 22 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 45 31 ed eb c0 0f 0b 48 RSP: 0018:ffffc90000006cc8 EFLAGS: 00000282 RAX: 0000000000000001 RBX: 0000000000000002 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff888ae460 RDI: ffffffff88db8780 RBP: ffffffff8a76ad80 R08: 0000000000000001 R09: ffffc90000006f50 R10: fffffbfff1c0f10c R11: ffff888019a6aea0 R12: ffff888023821bc0 R13: 0000000000000001 R14: 00000000ffffffff R15: ffff8880238225a0 __in6_dev_get include/net/addrconf.h:314 [inline] ip6_ignore_linkdown include/net/addrconf.h:405 [inline] find_match.part.0+0x385/0xae0 net/ipv6/route.c:755 find_match net/ipv6/route.c:842 [inline] __find_rr_leaf+0x150/0xae0 net/ipv6/route.c:843 find_rr_leaf net/ipv6/route.c:864 [inline] rt6_select net/ipv6/route.c:908 [inline] fib6_table_lookup+0x42c/0x830 net/ipv6/route.c:2195 ip6_pol_route+0x186/0xe00 net/ipv6/route.c:2231 pol_lookup_func include/net/ip6_fib.h:579 [inline] fib6_rule_lookup+0xfb/0x630 net/ipv6/fib6_rules.c:115 ip6_route_input_lookup net/ipv6/route.c:2301 [inline] ip6_route_input+0x538/0x930 net/ipv6/route.c:2470 ip6_rcv_finish+0x133/0x280 net/ipv6/ip6_input.c:74 ip_sabotage_in net/bridge/br_netfilter_hooks.c:873 [inline] ip_sabotage_in+0x1b2/0x260 net/bridge/br_netfilter_hooks.c:864 nf_hook_entry_hookfn include/linux/netfilter.h:136 [inline] nf_hook_slow+0xaf/0x160 net/netfilter/core.c:589 nf_hook.constprop.0+0x292/0x4b0 include/linux/netfilter.h:256 NF_HOOK include/linux/netfilter.h:299 [inline] ipv6_rcv+0x92/0x330 net/ipv6/ip6_input.c:307 __netif_receive_skb_one_core+0x104/0x180 net/core/dev.c:5365 netif_receive_skb_internal net/core/dev.c:5584 [inline] netif_receive_skb+0xf5/0x650 net/core/dev.c:5643 br_handle_frame_finish+0x533/0x1540 net/bridge/br_input.c:168 br_nf_hook_thresh+0x20e/0x300 net/bridge/br_netfilter_hooks.c:1025 br_nf_pre_routing_finish_ipv6+0x5d7/0xb60 net/bridge/br_netfilter_ipv6.c:206 NF_HOOK include/linux/netfilter.h:301 [inline] br_nf_pre_routing_ipv6+0x3bc/0x670 net/bridge/br_netfilter_ipv6.c:236 nf_hook_entry_hookfn include/linux/netfilter.h:136 [inline] nf_hook_bridge_pre net/bridge/br_input.c:224 [inline] br_handle_frame+0x808/0xf60 net/bridge/br_input.c:367 __netif_receive_skb_core+0x6b4/0x2e60 net/core/dev.c:5260 __netif_receive_skb_one_core+0xaa/0x180 net/core/dev.c:5363 process_backlog+0x1d2/0x610 net/core/dev.c:6346 __napi_poll+0x94/0x350 net/core/dev.c:6892 napi_poll net/core/dev.c:6959 [inline] net_rx_action+0x6fc/0xa50 net/core/dev.c:7036 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345 do_softirq.part.0+0xc8/0x110 kernel/softirq.c:248 do_softirq kernel/softirq.c:240 [inline] __local_bh_enable_ip+0x102/0x120 kernel/softirq.c:198 spin_unlock_bh include/linux/spinlock.h:399 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline] wg_packet_encrypt_worker+0xa2a/0xe90 drivers/net/wireguard/send.c:293 process_one_work+0x84c/0x13b0 kernel/workqueue.c:2275 worker_thread+0x598/0xf80 kernel/workqueue.c:2421 kthread+0x36f/0x450 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294