watchdog: BUG: soft lockup - CPU#0 stuck for 122s! [syz.0.311:1827]
Modules linked in:
CPU: 0 PID: 1827 Comm: syz.0.311 Not tainted 6.1.93-syzkaller-00006-gb18f8bbc044f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:update_stack_state+0x3bf/0x460 arch/x86/kernel/unwind_frame.c:252
Code: 57 f9 84 00 65 48 8b 05 bf 93 ca 7e 49 39 06 74 0d 48 89 df e8 42 fc ff ff 49 89 c6 eb 19 48 89 d8 48 c1 e8 03 42 80 3c 38 00 <74> 08 48 89 df e8 27 f9 84 00 4c 8b 33 48 8b 5d d0 48 83 c3 48 48
RSP: 0018:ffffc90000007350 EFLAGS: 00000246
RAX: 1ffff92000000ec5 RBX: ffffc90000007628 RCX: 1ffff92000000e9f
RDX: 1ffff92000000e96 RSI: ffffc90000007620 RDI: ffffc900000074f8
RBP: ffffc90000007408 R08: ffffc90000007588 R09: 0000000000000000
R10: ffffc90000007590 R11: dffffc0000000001 R12: 1ffff92000000e9c
R13: 0000000000000000 R14: ffffc900000074c8 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8104508178 CR3: 000000000700f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff1 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0x3cb/0x700 arch/x86/kernel/unwind_frame.c:315
 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:333
 kasan_slab_alloc include/linux/kasan.h:202 [inline]
 slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:768
 slab_alloc_node mm/slub.c:3421 [inline]
 slab_alloc mm/slub.c:3429 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3436 [inline]
 kmem_cache_alloc+0x175/0x2c0 mm/slub.c:3445
 dst_alloc+0x164/0x1e0 net/core/dst.c:92
 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:update_stack_state+0x38a/0x460 arch/x86/kernel/unwind_frame.c:252
Code: 89 df e8 29 fa 84 00 48 8b 45 c0 48 c7 03 00 00 00 00 48 83 c0 08 48 89 c3 eb 08 48 8b 5d 88 48 83 eb 80 4c 89 f0 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 f7 e8 57 f9 84 00 65 48 8b 05 bf 93 ca
RSP: 0018:ffffc900036467d0 EFLAGS: 00000a02
RAX: 1ffff920006c8d29 RBX: ffffc900036474c0 RCX: 1ffff920006c8d2f
RDX: 1ffff920006c8d26 RSI: ffffc900036474b8 RDI: ffffc90003646978
RBP: ffffc90003646888 R08: ffffc90003646a08 R09: 0000000000000010
R10: ffffc90003646a10 R11: dffffc0000000001 R12: 1ffff920006c8d2c
R13: 0000000000000000 R14: ffffc90003646948 R15: dffffc0000000000
 unwind_next_frame+0x3cb/0x700 arch/x86/kernel/unwind_frame.c:315
 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
 __call_rcu_common kernel/rcu/tree.c:2806 [inline]
 call_rcu+0xee/0x1340 kernel/rcu/tree.c:2925
 put_task_struct_rcu_user+0x58/0x90 kernel/exit.c:233
 finish_task_switch+0x343/0x7b0 kernel/sched/core.c:5330
 context_switch kernel/sched/core.c:5420 [inline]
 __schedule+0xcbd/0x1560 kernel/sched/core.c:6747
 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+0x0/0xe0 kernel/sched/core.c:6933
Code: f7 e8 74 cd 9e fc eb a1 66 90 55 48 89 e5 bf 01 00 00 00 e8 62 83 31 fc e8 dd fd ff ff bf 01 00 00 00 e8 b3 81 31 fc 5d c3 90 <55> 48 89 e5 41 57 41 56 41 54 53 48 83 e4 e0 48 83 ec 60 65 48 8b
RSP: 0018:ffffc900036471c0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90003647260 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001
RBP: ffffc90003647210 R08: dffffc0000000000 R09: ffffed102007428e
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff871b5d30
R13: dffffc0000000000 R14: 1ffff920006c8e48 R15: 1ffff920006c8e4c
 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: 0033:0x7f4169b7def9
Code: Unable to access opcode bytes at 0x7f4169b7decf.
RSP: 002b:00007f416a9c3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f4169d36058 RCX: 00007f4169b7def9
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000005
RBP: 00007f4169bf0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4169d36058 R15: 00007ffc4e36af38
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2493 Comm: syz.4.467 Not tainted 6.1.93-syzkaller-00006-gb18f8bbc044f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x17/0x60 kernel/kcov.c:207
Code: 48 8b 3d 64 e8 1c 06 48 89 de e8 44 71 46 00 5b 5d c3 cc 55 48 89 e5 48 8b 45 08 65 48 8b 0d 60 c8 8c 7e 65 8b 15 61 c8 8c 7e <f7> c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 6c 0b 00 00
RSP: 0018:ffffc900001b06f0 EFLAGS: 00000046
RAX: ffffffff819bf1c2 RBX: 0000000000000000 RCX: ffff88811a0d2880
RDX: 0000000000010101 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001b06f0 R08: ffffffff819bf1b2 R09: ffffc900001b0840
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900001b0a00
R13: ffffc900001b08a6 R14: ffffc900001b08a0 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055bc93abfe38 CR3: 0000000141841000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 perf_prepare_sample+0xe42/0x1ca0 kernel/events/core.c:7547
 __perf_event_output kernel/events/core.c:7641 [inline]
 perf_event_output_forward+0xdb/0x1b0 kernel/events/core.c:7661
 __perf_event_overflow+0x458/0x630 kernel/events/core.c:9409
 perf_swevent_hrtimer+0x38e/0x4f0 kernel/events/core.c:10817
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x41a/0xad0 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x40c/0xaa0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0xfd/0x3c0 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x44/0xc0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:variable_ffs arch/x86/include/asm/bitops.h:319 [inline]
RIP: 0010:handle_softirqs+0x14a/0x650 kernel/softirq.c:605
Code: 85 e8 2a 63 d3 03 65 66 44 89 3d d1 5c bd 7e 48 c7 c7 c0 19 89 85 e8 15 63 d3 03 65 89 1d 96 5a bc 7e fb 49 c7 c5 c0 a0 00 87 <89> 5d a0 b8 ff ff ff ff 0f bc 45 a0 41 89 c6 41 ff c6 0f 84 b0 02
RSP: 0018:ffffc900001b0f38 EFLAGS: 00000282
RAX: 0000000000000001 RBX: 0000000000000002 RCX: ffff88811a0d2880
RDX: 1ffffffff0f6d408 RSI: ffffffff858919c0 RDI: ffffffff85e9fea0
RBP: ffffc900001b0fc0 R08: ffffffff87b6a040 R09: ffffffff87b6a048
R10: ffffffff87b6a058 R11: ffffffff87b6a050 R12: ffff88811a0d2880
R13: ffffffff8700a0c0 R14: 0000000000000002 R15: 0000000000000000
 __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 66 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:ffffc90000e17600 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff88811a0d33c8 RCX: 0000000000000002
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90000e17650 R08: ffffffff819b58d0 R09: fffffbfff0f25267
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f6f37c80
R13: ffff88811a0d2880 R14: 1ffff1103ede70fc R15: ffff8881f6f387e0
 context_switch kernel/sched/core.c:5420 [inline]
 __schedule+0xcbd/0x1560 kernel/sched/core.c:6747
 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:exit_mmap+0x1/0xbe0 mm/mmap.c:3308
Code: 49 89 f6 48 89 fb e8 8e bb c1 ff 48 89 df 4c 89 f6 31 d2 e8 e1 e6 ff ff 5b 41 5e 5d c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 <48> 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 80 01 00
RSP: 0018:ffffc90000e17900 EFLAGS: 00000293
RAX: ffffffff8143bebe RBX: 0000000000000000 RCX: ffff88811a0d2880
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888118248500
RBP: ffffc90000e17948 R08: ffffffff8143beb4 R09: ffffed1023049119
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811a0d2de0
R13: dffffc0000000000 R14: ffff888118248500 R15: 00000000000007fd
 mmput+0x56/0x170 kernel/fork.c:1321
 exit_mm kernel/exit.c:566 [inline]
 do_exit+0xb29/0x2b80 kernel/exit.c:862
 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: 0033:0x7f104bd7def9
Code: Unable to access opcode bytes at 0x7f104bd7decf.
RSP: 002b:00007f104cb43038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f104bf35f80 RCX: 00007f104bd7def9
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000007
RBP: 00007f104bdf0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f104bf35f80 R15: 00007fff73708958
 </TASK>