watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.3.284:2971]
Modules linked in:
CPU: 0 PID: 2971 Comm: syz.3.284 Not tainted 5.10.225-syzkaller-00513-g8d23314f588a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:unwind_next_frame+0x3cb/0x700 arch/x86/kernel/unwind_frame.c:305
Code: 8b 5d d0 48 89 d8 48 c1 e8 03 80 3c 10 00 74 08 48 89 df e8 87 2d 76 00 48 8b 03 4c 89 f7 48 89 45 d0 48 89 c6 e8 45 03 00 00 <89> c1 b0 01 84 c9 0f 85 ce 01 00 00 49 8d 5e 34 48 89 d8 48 c1 e8
RSP: 0018:ffffc90000006fb8 EFLAGS: 00000282
RAX: 0000000000007001 RBX: ffffc900013af128 RCX: 1ffff92000000e13
RDX: 1ffff92000000e0a RSI: ffffc900013af140 RDI: ffffc90000007098
RBP: ffffc90000007030 R08: ffffc90000007128 R09: 0000000000000015
R10: ffffc90000007130 R11: dffffc0000000001 R12: 0000000000000000
R13: ffffc90000007090 R14: ffffc90000007040 R15: 1ffff92000000e08
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd6afbfefd3 CR3: 000000000660f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:121
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:430 [inline]
 __kasan_slab_alloc+0xb1/0xe0 mm/kasan/common.c:463
 kasan_slab_alloc include/linux/kasan.h:244 [inline]
 slab_post_alloc_hook+0x61/0x2f0 mm/slab.h:583
 slab_alloc_node mm/slub.c:2947 [inline]
 slab_alloc mm/slub.c:2955 [inline]
 kmem_cache_alloc+0x168/0x2e0 mm/slub.c:2960
 kmem_cache_alloc_node include/linux/slab.h:423 [inline]
 __alloc_skb+0x80/0x510 net/core/skbuff.c:200
 alloc_skb include/linux/skbuff.h:1126 [inline]
 nlmsg_new include/net/netlink.h:953 [inline]
 __neigh_notify+0x7d/0x120 net/core/neighbour.c:3375
 neigh_cleanup_and_release+0x2c/0x1b0 net/core/neighbour.c:102
 neigh_del net/core/neighbour.c:198 [inline]
 neigh_remove_one+0x36b/0x3d0 net/core/neighbour.c:219
 neigh_forced_gc net/core/neighbour.c:252 [inline]
 neigh_alloc net/core/neighbour.c:430 [inline]
 ___neigh_create+0x484/0x1a10 net/core/neighbour.c:592
 __neigh_create+0x32/0x40 net/core/neighbour.c:680
 ip6_finish_output2+0x957/0x1850 net/ipv6/ip6_output.c:142
 __ip6_finish_output+0x5ec/0x780 net/ipv6/ip6_output.c:216
 ip6_finish_output+0x34/0x1e0 net/ipv6/ip6_output.c:226
 NF_HOOK_COND include/linux/netfilter.h:288 [inline]
 ip6_output+0x1f7/0x4c0 net/ipv6/ip6_output.c:249
 dst_output include/net/dst.h:437 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ndisc_send_skb+0x6e9/0xc00 net/ipv6/ndisc.c:511
 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:705
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3964
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1450
 expire_timers kernel/time/timer.c:1495 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1789
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1802
 __do_softirq+0x268/0x5bb kernel/softirq.c:309
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:405 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:schedule_debug kernel/sched/core.c:4569 [inline]
RIP: 0010:__schedule+0x133/0x1330 kernel/sched/core.c:4698
Code: 33 12 f7 fc 48 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 1a 12 f7 fc 48 81 3b 9d 6e ac 57 0f 85 c0 0d 00 00 <65> 8b 05 b2 38 51 7b 25 ff ff ff 7f 83 f8 01 0f 85 0d 0b 00 00 48
RSP: 0018:ffffc900013af260 EFLAGS: 00000246
RAX: 1ffff92000275000 RBX: ffffc900013a8000 RCX: 1ffff92000275e58
RDX: 1ffff92000275e58 RSI: ffffffff85602420 RDI: ffffffff856023e0
RBP: ffffc900013af350 R08: ffffffff87084008 R09: ffffffff87084018
R10: ffffffff87084010 R11: ffffffff87084003 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff8881f7000000 R15: ffff88811cde62c0
 preempt_schedule_irq+0xc7/0x140 kernel/sched/core.c:5065
 irqentry_exit_cond_resched kernel/entry/common.c:365 [inline]
 irqentry_exit+0x4f/0x60 kernel/entry/common.c:395
 sysvec_apic_timer_interrupt+0xcb/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:pmd_none arch/x86/include/asm/pgtable.h:824 [inline]
RIP: 0010:is_swap_pmd include/linux/huge_mm.h:235 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1408 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1464 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1485 [inline]
RIP: 0010:unmap_page_range+0x555/0x23b0 mm/memory.c:1506
Code: 00 00 00 4c 89 e8 48 c1 e8 03 48 89 84 24 a8 00 00 00 42 80 3c 20 00 74 08 4c 89 ef e8 54 dc 0a 00 4c 89 6c 24 68 49 8b 5d 00 <48> 89 de 48 83 e6 9f 41 0f 95 c4 31 ff e8 79 46 cd ff 48 89 de 48
RSP: 0018:ffffc900013af4e0 EFLAGS: 00000246
RAX: 1ffff11028a05105 RBX: 0000000000000000 RCX: ffff88811cde62c0
RDX: 0000000000000000 RSI: 0000000020ffffff RDI: 0000000020bfffff
RBP: ffffc900013af710 R08: ffffffff819d6a58 R09: ffffed1021d8555f
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888145028828 R14: 0000000020c00000 R15: 0000000020bfffff
 unmap_single_vma mm/memory.c:1551 [inline]
 unmap_vmas+0x37f/0x4f0 mm/memory.c:1583
 exit_mmap+0x2f2/0x5c0 mm/mmap.c:3355
 __mmput+0x95/0x2d0 kernel/fork.c:1153
 mmput+0x59/0x170 kernel/fork.c:1176
 exit_mm kernel/exit.c:539 [inline]
 do_exit+0xbda/0x2a50 kernel/exit.c:850
 do_group_exit+0x141/0x310 kernel/exit.c:985
 get_signal+0x10a0/0x1410 kernel/signal.c:2790
 arch_do_signal_or_restart+0xbd/0x17c0 arch/x86/kernel/signal.c:805
 handle_signal_work kernel/entry/common.c:145 [inline]
 exit_to_user_mode_loop+0x9b/0xd0 kernel/entry/common.c:169
 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
 syscall_exit_to_user_mode+0xa2/0x1a0 kernel/entry/common.c:274
 do_syscall_64+0x40/0x70 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fdc74ed8ef9
Code: Unable to access opcode bytes at RIP 0x7fdc74ed8ecf.
RSP: 002b:00007fdc73b520e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fdc75090f88 RCX: 00007fdc74ed8ef9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fdc75090f8c
RBP: 00007fdc75090f80 R08: 00007fffc35e30b0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdc75090f8c
R13: 0000000000000000 R14: 00007fffc3507d40 R15: 00007fffc3507e28
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2082 Comm: syz.2.225 Not tainted 5.10.225-syzkaller-00513-g8d23314f588a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:clockevents_program_event+0x1a7/0x2c0 kernel/time/clockevents.c:334
Code: 00 41 0f b6 4f 34 48 d3 eb 49 8d 7f 08 48 89 f8 48 c1 e8 03 42 80 3c 28 00 74 05 e8 73 4f 4a 00 48 89 df 4c 89 fe 41 ff 57 08 <89> c3 31 ff 89 c6 e8 0e b9 0c 00 85 db 74 59 45 84 f6 74 54 e8 50
RSP: 0018:ffffc90000170650 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 000000000000011e RCX: 0000000000000838
RDX: 0000000000000000 RSI: 000000000000011e RDI: 0000000000000838
RBP: ffffc90000170680 R08: ffffffff815df6c1 R09: ffffffff815df64d
R10: 0000000000000002 R11: ffff888117b5e2c0 R12: 00000000000011e9
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881f7126e80
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd6afc0f01a CR3: 0000000136477000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 tick_program_event+0x9f/0x120 kernel/time/tick-oneshot.c:44
 hrtimer_interrupt+0x4cf/0x8b0 kernel/time/hrtimer.c:1724
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1083 [inline]
 __sysvec_apic_timer_interrupt+0xfd/0x3c0 arch/x86/kernel/apic/apic.c:1100
 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline]
 sysvec_apic_timer_interrupt+0xba/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:ip6_route_input+0x167/0xb00 net/ipv6/route.c:2446
Code: c3 00 01 00 00 ba 58 00 00 00 48 89 cf 31 f6 e8 df d3 7e fd 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 97 06 00 00 8b 1b <4c> 89 f8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 9e 06 00 00 89 9c
RSP: 0018:ffffc900001708e0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000029 RCX: 0000000000000000
RDX: 0000000000000058 RSI: 0000000000000000 RDI: ffffc900001709b8
RBP: ffffc90000170ab8 R08: dffffc0000000000 R09: ffffc90000170960
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888143789000 R14: ffff88813f80f140 R15: ffffc90000170964
 ip6_rcv_finish_core net/ipv6/ip6_input.c:67 [inline]
 ip6_rcv_finish+0x14f/0x350 net/ipv6/ip6_input.c:78
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ipv6_rcv+0xee/0x270 net/ipv6/ip6_input.c:301
 __netif_receive_skb_one_core net/core/dev.c:5382 [inline]
 __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5496
 process_backlog+0x31c/0x650 net/core/dev.c:6403
 napi_poll net/core/dev.c:6854 [inline]
 net_rx_action+0x516/0x10d0 net/core/dev.c:6924
 __do_softirq+0x268/0x5bb kernel/softirq.c:309
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:405 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x49/0x70 kernel/locking/spinlock.c:199
Code: 08 00 74 0c 48 c7 c7 f0 77 6c 86 e8 c1 de f5 fc 48 83 3d c9 0f ba 01 00 74 2a 48 89 df e8 13 3c 9e fc 66 90 fb bf 01 00 00 00 <e8> b2 ab 96 fc 65 8b 05 47 05 50 7b 85 c0 74 03 5b 5d c3 e8 b3 13
RSP: 0018:ffffc90000dc7528 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff8881f7155fc0 RCX: dffffc0000000000
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90000dc7530 R08: ffffffff8188e689 R09: fffffbfff0dc7623
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f7155fc0
R13: ffff888117b5e2c0 R14: dffffc0000000000 R15: 0000000000000000
 finish_lock_switch kernel/sched/core.c:3784 [inline]
 finish_task_switch+0x130/0x5a0 kernel/sched/core.c:3884
 context_switch kernel/sched/core.c:4049 [inline]
 __schedule+0xbee/0x1330 kernel/sched/core.c:4804
 schedule+0x13d/0x1d0 kernel/sched/core.c:4882
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4941
 __mutex_lock_common kernel/locking/mutex.c:1053 [inline]
 __mutex_lock+0x7b8/0xf20 kernel/locking/mutex.c:1117
 __mutex_lock_slowpath+0xe/0x10 kernel/locking/mutex.c:1379
 mutex_lock+0xd6/0x110 kernel/locking/mutex.c:299
 rtnl_lock+0x15/0x20 net/core/rtnetlink.c:72
 tun_detach drivers/net/tun.c:710 [inline]
 tun_chr_close+0x40/0x140 drivers/net/tun.c:3486
 __fput+0x33d/0x7b0 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x129/0x190 kernel/task_work.c:189
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xc83/0x2a50 kernel/exit.c:863
 do_group_exit+0x141/0x310 kernel/exit.c:985
 get_signal+0x10a0/0x1410 kernel/signal.c:2790
 arch_do_signal_or_restart+0xbd/0x17c0 arch/x86/kernel/signal.c:805
 handle_signal_work kernel/entry/common.c:145 [inline]
 exit_to_user_mode_loop+0x9b/0xd0 kernel/entry/common.c:169
 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
 syscall_exit_to_user_mode+0xa2/0x1a0 kernel/entry/common.c:274
 do_syscall_64+0x40/0x70 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f27cfabfef9
Code: Unable to access opcode bytes at RIP 0x7f27cfabfecf.
RSP: 002b:00007f27ce7180e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f27cfc78060 RCX: 00007f27cfabfef9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f27cfc78064
RBP: 00007f27cfc78058 R08: 00007fffadfc60b0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f27cfc78064
R13: 0000000000000000 R14: 00007fffadfae3f0 R15: 00007fffadfae4d8