watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz.0.86:890]
Modules linked in:
CPU: 0 PID: 890 Comm: syz.0.86 Not tainted 6.1.93-syzkaller-00100-g27310ed6b677 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__kernel_text_address+0x30/0x40 kernel/extable.c:79
Code: 89 fb e8 33 00 00 00 85 c0 0f 95 c0 48 c7 c1 00 20 9a 87 48 39 cb 0f 93 c1 48 c7 c2 54 97 a8 87 48 39 d3 0f 92 c2 20 ca 08 c2 <0f> b6 c2 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57
RSP: 0018:ffffc90000007600 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff840d73c1 RCX: ffffffff879a2000
RDX: ffffffff87a89701 RSI: ffffc90000007900 RDI: ffffffff840d73c1
RBP: ffffc90000007608 R08: ffffc90000007728 R09: 0000000000000000
R10: ffffc90000007730 R11: dffffc0000000001 R12: ffff888119c98000
R13: ffffffff8165c680 R14: dffffc0000000000 R15: 1ffff92000000ed1
FS:  00007facbf26a6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3121cff8 CR3: 0000000137ef0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_frame.c:19
 arch_stack_walk+0xf3/0x140 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 ref_tracker_alloc+0x175/0x450 lib/ref_tracker.c:91
 __netdev_tracker_alloc include/linux/netdevice.h:4063 [inline]
 netdev_hold include/linux/netdevice.h:4092 [inline]
 dst_init+0xe1/0x400 net/core/dst.c:52
 dst_alloc+0x18a/0x1e0 net/core/dst.c:96
 ip6_dst_alloc net/ipv6/route.c:345 [inline]
 icmp6_dst_alloc+0xf8/0x510 net/ipv6/route.c:3266
 ndisc_send_skb+0x28b/0xdc0 net/ipv6/ndisc.c:489
 ndisc_send_rs+0x47d/0x5f0 net/ipv6/ndisc.c:719
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3984
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1510
 expire_timers kernel/time/timer.c:1555 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1826
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1839
 handle_softirqs+0x1db/0x650 kernel/softirq.c:617
 __do_softirq kernel/softirq.c:655 [inline]
 invoke_softirq kernel/softirq.c:472 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:704
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:716
 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:schedule_debug kernel/sched/core.c:5987 [inline]
RIP: 0010:__schedule+0x136/0x1560 kernel/sched/core.c:6639
Code: 74 08 48 89 df e8 ea e2 9e fc 48 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 d1 e2 9e fc 48 81 3b 9d 6e ac 57 <0f> 85 35 0f 00 00 65 8b 05 35 7e e4 7a 25 ff ff ff 7f 83 f8 01 0f
RSP: 0018:ffffc90000b575c0 EFLAGS: 00000246
RAX: 1ffff9200016a000 RBX: ffffc90000b50000 RCX: 1ffff9200016aec8
RDX: 1ffffffff0f6d400 RSI: ffffffff85e9ff80 RDI: ffffffff85e9ff40
RBP: ffffc90000b576d0 R08: ffffffff87b6a000 R09: ffffffff87b6a008
R10: ffffffff87b6a018 R11: ffffffff87b6a010 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff888119c98000 R15: ffff8881f6e00000
 preempt_schedule_irq+0xc7/0x140 kernel/sched/core.c:7059
 raw_irqentry_exit_cond_resched+0x2a/0x30 kernel/entry/common.c:396
 irqentry_exit+0x30/0x40 kernel/entry/common.c:439
 sysvec_apic_timer_interrupt+0x55/0xc0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:preempt_schedule_common+0x1/0xf0 kernel/sched/core.c:6899
Code: 65 48 8b 04 25 28 00 00 00 48 3b 44 24 48 75 14 48 8d 65 e0 5b 41 5c 41 5e 41 5f 5d c3 e8 07 00 00 00 eb cc e8 50 68 fb ff 55 <48> 89 e5 41 57 41 56 53 49 bf 00 00 00 00 00 fc ff df eb 0d 48 f7
RSP: 0018:ffffc90000b57870 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 1ffff9200016af10 RCX: 0000000000000001
RDX: ffffc9000133a000 RSI: 000000000000002d RDI: 0000000000000001
RBP: ffffc90000b57918 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 1ffff9200016af14
R13: 0000000000000000 R14: ffffc90000b578a0 R15: dffffc0000000000
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x5f/0x70 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 fasync_insert_entry+0x223/0x2e0 fs/fcntl.c:934
 fasync_add_entry fs/fcntl.c:957 [inline]
 fasync_helper+0x52/0xa0 fs/fcntl.c:975
 perf_fasync+0x84/0xa0 kernel/events/core.c:6478
 ioctl_fioasync fs/ioctl.c:379 [inline]
 do_vfs_ioctl+0x122a/0x29a0 fs/ioctl.c:791
 __do_sys_ioctl fs/ioctl.c:868 [inline]
 __se_sys_ioctl+0x99/0x190 fs/ioctl.c:856
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
 x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7facbe37cef9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007facbf26a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007facbe535f80 RCX: 00007facbe37cef9
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000005
RBP: 00007facbe3ef046 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007facbe535f80 R15: 00007ffd94336c48
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 664 Comm: syz.4.59 Not tainted 6.1.93-syzkaller-00100-g27310ed6b677 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:asm_sysvec_irq_work+0x0/0x20 arch/x86/include/asm/idtentry.h:675
Code: e8 95 53 d9 ff e9 d0 03 00 00 0f 01 ca fc 6a ff e8 c5 02 00 00 48 89 c4 48 8d 6c 24 01 48 89 e7 e8 a5 49 d9 ff e9 b0 03 00 00 <0f> 01 ca fc 6a ff e8 a5 02 00 00 48 89 c4 48 8d 6c 24 01 48 89 e7
RSP: 0018:ffffc900001b0cb8 EFLAGS: 00000082
RAX: 0000000000000000 RBX: ffff888111023010 RCX: ffff88811c88a880
RDX: 0000000000000102 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001b0d30 R08: ffffffff842dfc7d R09: ffffc900001b0a20
R10: ffffffffffffffff R11: dffffc0000000001 R12: 1ffff11022204601
R13: ffff888111023040 R14: ffff888119614e5c R15: ffff888111023000
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f55b2e52de0 CR3: 000000000700f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1510
 expire_timers kernel/time/timer.c:1555 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1826
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1839
 handle_softirqs+0x1db/0x650 kernel/softirq.c:617
 __do_softirq kernel/softirq.c:655 [inline]
 invoke_softirq kernel/softirq.c:472 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:704
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:716
 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:finish_task_switch+0x16f/0x7b0 kernel/sched/core.c:5294
Code: 74 08 4c 89 ff e8 f1 65 6c 00 49 8b 1f 48 85 db 4c 8b 6d c0 0f 85 ce 00 00 00 4c 89 e7 e8 b9 66 cf 03 fb 49 8d 9d 48 0b 00 00 <48> 89 d8 48 c1 e8 03 49 be 00 00 00 00 00 fc ff df 42 0f b6 04 30
RSP: 0018:ffffc90000d76f80 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff88811c88b3c8 RCX: 0000000000000002
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90000d76fd0 R08: ffffffff819b57d0 R09: fffffbfff0f2525f
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f6f37c80
R13: ffff88811c88a880 R14: 1ffff1103ede70fc R15: ffff8881f6f387e0
 context_switch kernel/sched/core.c:5420 [inline]
 __schedule+0xcbd/0x1560 kernel/sched/core.c:6747
 preempt_schedule_common+0x9b/0xf0 kernel/sched/core.c:6916
 preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6940
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 rt_mutex_wake_up_q kernel/locking/rtmutex.c:528 [inline]
 rt_mutex_postunlock kernel/locking/rtmutex_api.c:486 [inline]
 rt_mutex_futex_unlock+0x170/0x1f0 kernel/locking/rtmutex_api.c:204
 rcu_preempt_deferred_qs_irqrestore+0x73d/0x9e0 kernel/rcu/tree_plugin.h:571
 rcu_read_unlock_special+0xdb/0x4e0 kernel/rcu/tree_plugin.h:681
 __rcu_read_unlock+0x7e/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:832 [inline]
 page_ext_put+0x1c/0x30 mm/page_ext.c:187
 __reset_page_owner+0x175/0x190 mm/page_owner.c:176
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1498 [inline]
 free_pcp_prepare mm/page_alloc.c:1572 [inline]
 free_unref_page_prepare+0x83d/0x850 mm/page_alloc.c:3498
 free_unref_page+0xb2/0x5c0 mm/page_alloc.c:3594
 free_the_page mm/page_alloc.c:798 [inline]
 __free_pages+0x61/0xf0 mm/page_alloc.c:5803
 __vunmap+0x9f3/0xb60 mm/vmalloc.c:2728
 __vfree mm/vmalloc.c:2776 [inline]
 vfree+0x5c/0x80 mm/vmalloc.c:2807
 kcov_put kernel/kcov.c:428 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:524
 __fput+0x3ab/0x870 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x24d/0x2e0 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xbd5/0x2b80 kernel/exit.c:875
 do_group_exit+0x21a/0x2d0 kernel/exit.c:1025
 get_signal+0x169d/0x1820 kernel/signal.c:2880
 arch_do_signal_or_restart+0xb0/0x16f0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x74/0xa0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fdc9ef7cef9
Code: Unable to access opcode bytes at 0x7fdc9ef7cecf.
RSP: 002b:00007fdc9fd160e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fdc9f135f88 RCX: 00007fdc9ef7cef9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fdc9f135f8c
RBP: 00007fdc9f135f80 R08: 00007fffae51d0b0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdc9f135f8c
R13: 0000000000000000 R14: 00007fffae4334e0 R15: 00007fffae4335c8
 </TASK>