watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [syz.3.68:880]
Modules linked in:
CPU: 1 PID: 880 Comm: syz.3.68 Not tainted 5.15.157-syzkaller-00897-g53be7c8abe11 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:slab_alloc_node mm/slub.c:3175 [inline]
RIP: 0010:slab_alloc mm/slub.c:3248 [inline]
RIP: 0010:__kmalloc_track_caller+0x7d/0x260 mm/slub.c:4945
Code: c0 00 00 00 00 48 8d 75 c0 ba 01 00 00 00 4c 89 e7 44 89 f1 e8 44 d3 ff ff 48 85 c0 74 75 49 89 c5 e9 80 01 00 00 49 8b 45 00 <65> 48 03 05 6b d9 4f 7e 48 8b 50 08 48 8b 38 48 85 ff 0f 84 c8 00
RSP: 0018:ffffc900001d0b20 EFLAGS: 00000202
RAX: 000000000003b3c0 RBX: ffffffff845b0c03 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000400 RDI: ffffffff86c56a00
RBP: ffffc900001d0b70 R08: 0000000000000140 R09: ffff88812037ac80
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888100043080
R13: ffff888100043080 R14: 0000000000082a20 R15: 0000000000000280
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2b513e7383 CR3: 000000010c4a6000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 kmalloc_reserve net/core/skbuff.c:357 [inline]
 __alloc_skb+0x10c/0x550 net/core/skbuff.c:428
 alloc_skb include/linux/skbuff.h:1183 [inline]
 ndisc_alloc_skb+0xf3/0x2d0 net/ipv6/ndisc.c:421
 ndisc_send_rs+0x26c/0x6a0 net/ipv6/ndisc.c:687
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3978
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1457
 expire_timers kernel/time/timer.c:1502 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1773
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1786
 __do_softirq+0x26d/0x5bf kernel/softirq.c:565
 invoke_softirq kernel/softirq.c:425 [inline]
 __irq_exit_rcu+0x50/0xf0 kernel/softirq.c:648
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:660
 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:call_rcu+0xdf7/0x1310 kernel/rcu/tree.c:3126
Code: 41 80 3c 06 00 74 08 4c 89 ef e8 e4 34 56 00 48 8b 05 cd 27 5e 05 49 03 45 00 48 39 c3 7f 62 fb 49 bd 00 00 00 00 00 fc ff df <48> c7 84 24 80 00 00 00 0e 36 e0 45 48 8b 44 24 78 49 c7 44 05 00
RSP: 0018:ffffc90000d36fe0 EFLAGS: 00000283
RAX: 0000000000002710 RBX: 00000000000000de RCX: ffffffff815c8920
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881f7138c08
RBP: ffffc90000d37148 R08: dffffc0000000000 R09: ffffed103ee27182
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1103ee27181
R13: dffffc0000000000 R14: 1ffff1103ee27187 R15: ffff8881f7138c08
 put_task_struct_rcu_user+0x58/0x90 kernel/exit.c:228
 finish_task_switch+0x343/0x7b0 kernel/sched/core.c:5065
 context_switch kernel/sched/core.c:5155 [inline]
 __schedule+0xcd4/0x1590 kernel/sched/core.c:6512
 preempt_schedule_irq+0xc7/0x140 kernel/sched/core.c:6916
 irqentry_exit_cond_resched+0x2a/0x30 kernel/entry/common.c:398
 irqentry_exit+0x30/0x40 kernel/entry/common.c:432
 sysvec_apic_timer_interrupt+0x55/0xc0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:find_stack lib/stackdepot.c:209 [inline]
RIP: 0010:__stack_depot_save+0x177/0x470 lib/stackdepot.c:304
Code: 81 e1 ff 0f 00 00 48 89 45 b0 48 89 4d b8 4c 8b 24 c8 4c 89 cb 41 89 df eb 04 4d 8b 24 24 4d 85 e4 74 2d 45 39 74 24 08 75 f0 <41> 39 5c 24 0c 75 e9 31 c0 49 8b 4c c5 00 49 3b 4c c4 18 75 db 48
RSP: 0018:ffffc90000d37468 EFLAGS: 00000246
RAX: ffff88823fe40000 RBX: 0000000000000010 RCX: 0000000000000f46
RDX: ffffc90000d37598 RSI: 0000000000000001 RDI: 0000000000002800
RBP: ffffc90000d374c0 R08: 0000000000000002 R09: 0000000000000010
R10: ffffc90000d37450 R11: dffffc0000000001 R12: ffff88812c55dab0
R13: ffffc90000d37520 R14: 0000000034a47f46 R15: 0000000000000010
 stack_depot_save+0xe/0x10 lib/stackdepot.c:383
 save_stack+0x104/0x1e0 mm/page_owner.c:140
 __reset_page_owner+0x36/0x190 mm/page_owner.c:156
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1472 [inline]
 free_pcp_prepare mm/page_alloc.c:1544 [inline]
 free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3534
 free_unref_page+0xe8/0x750 mm/page_alloc.c:3616
 free_the_page mm/page_alloc.c:805 [inline]
 __free_pages+0x61/0xf0 mm/page_alloc.c:5855
 __vunmap+0x7bc/0x8f0 mm/vmalloc.c:2652
 __vfree mm/vmalloc.c:2700 [inline]
 vfree+0x7f/0xb0 mm/vmalloc.c:2731
 kcov_put kernel/kcov.c:408 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:510
 __fput+0x3fe/0x910 fs/file_table.c:280
 ____fput+0x15/0x20 fs/file_table.c:308
 task_work_run+0x129/0x190 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0xc48/0x2ca0 kernel/exit.c:878
 do_group_exit+0x141/0x310 kernel/exit.c:1000
 get_signal+0x7a3/0x1630 kernel/signal.c:2896
 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214
 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:320
 irqentry_exit+0x12/0x40 kernel/entry/common.c:411
 sysvec_apic_timer_interrupt+0x55/0xc0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0033:0x7fca7db29ef9
Code: Unable to access opcode bytes at RIP 0x7fca7db29ecf.
RSP: 002b:00007fca7c7a4038 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007fca7dce2f80 RCX: 00007fca7db29ef9
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007fca7db9c046 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fca7dce2f80 R15: 00007fff77cfdeb8
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1344 Comm: syz.4.113 Not tainted 5.15.157-syzkaller-00897-g53be7c8abe11 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:rb_erase+0xd78/0xd90 lib/rbtree.c:446
Code: 49 0f 44 c6 48 89 45 a8 48 8b 5d a8 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 b0 e9 2a ff 4c 89 2b 48 83 c4 38 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
RSP: 0018:ffffc90000006930 EFLAGS: 00000086
RAX: 1ffff1103ee053fb RBX: ffff8881f7029a60 RCX: dffffc0000000000
RDX: 0000000000010503 RSI: ffff8881f7029a60 RDI: ffff8881264a93a8
RBP: ffffc90000006950 R08: ffffffff82887708 R09: 0000000000000003
R10: fffff52000000d48 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8881f7029fd8 R15: ffff8881f7029fd8
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9c5a044000 CR3: 0000000006a0f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 rb_erase_cached include/linux/rbtree.h:126 [inline]
 timerqueue_del+0xb4/0x100 lib/timerqueue.c:57
 __remove_hrtimer kernel/time/hrtimer.c:1116 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1665 [inline]
 __hrtimer_run_queues+0x35f/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:1085 [inline]
 __sysvec_apic_timer_interrupt+0xfd/0x3c0 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x44/0xc0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:update_stack_state+0x17f/0x460 arch/x86/kernel/unwind_frame.c:218
Code: ff ff ff e8 d3 c6 f7 ff 85 c0 0f 85 22 01 00 00 48 8b 85 48 ff ff ff 42 80 3c 30 00 74 08 4c 89 e7 e8 95 b8 7d 00 4d 8b 24 24 <48> 8b 85 50 ff ff ff 42 80 3c 30 00 74 0c 48 8b bd 70 ff ff ff e8
RSP: 0018:ffffc90000006cf0 EFLAGS: 00000246
RAX: 1ffff92000000dc9 RBX: ffffc90000006e68 RCX: ffffc90000007250
RDX: 1ffff92000000dca RSI: ffffc90000007240 RDI: ffffc90000006e98
RBP: ffffc90000006da8 R08: ffffc90000006f28 R09: 0000000000000002
R10: ffffc90000006f30 R11: dffffc0000000001 R12: ffffc90000000000
R13: ffffc90000006e90 R14: dffffc0000000000 R15: ffffc90000006e40
 unwind_next_frame+0x3cb/0x700 arch/x86/kernel/unwind_frame.c:305
 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:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x126/0x160 mm/kasan/common.c:365
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
 kasan_slab_free include/linux/kasan.h:193 [inline]
 slab_free_hook mm/slub.c:1723 [inline]
 slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1749
 slab_free mm/slub.c:3519 [inline]
 kmem_cache_free+0x116/0x2e0 mm/slub.c:3535
 kfree_skbmem+0x104/0x170
 __kfree_skb net/core/skbuff.c:758 [inline]
 consume_skb+0xb4/0x250 net/core/skbuff.c:930
 netlink_broadcast_filtered+0x10f4/0x1220 net/netlink/af_netlink.c:1540
 netlink_broadcast net/netlink/af_netlink.c:1562 [inline]
 nlmsg_multicast include/net/netlink.h:1033 [inline]
 nlmsg_notify+0x101/0x1c0 net/netlink/af_netlink.c:2548
 rtnl_notify+0x9c/0xd0 net/core/rtnetlink.c:730
 __neigh_notify+0xcc/0x120 net/core/neighbour.c:3386
 neigh_cleanup_and_release+0x2c/0x1b0 net/core/neighbour.c:101
 neigh_del net/core/neighbour.c:197 [inline]
 neigh_remove_one+0x3a6/0x430 net/core/neighbour.c:218
 neigh_forced_gc net/core/neighbour.c:251 [inline]
 neigh_alloc net/core/neighbour.c:429 [inline]
 ___neigh_create+0x474/0x1bd0 net/core/neighbour.c:591
 __neigh_create+0x32/0x40 net/core/neighbour.c:679
 ip6_finish_output2+0x9ee/0x16e0 net/ipv6/ip6_output.c:123
 __ip6_finish_output+0x60f/0x7c0 net/ipv6/ip6_output.c:197
 ip6_finish_output+0x31/0x210 net/ipv6/ip6_output.c:207
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x1f7/0x4d0 net/ipv6/ip6_output.c:230
 dst_output include/net/dst.h:444 [inline]
 NF_HOOK include/linux/netfilter.h:305 [inline]
 ndisc_send_skb+0x73e/0xc90 net/ipv6/ndisc.c:509
 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:703
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3978
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1457
 expire_timers kernel/time/timer.c:1502 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1773
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1786
 __do_softirq+0x26d/0x5bf kernel/softirq.c:565
 invoke_softirq kernel/softirq.c:425 [inline]
 __irq_exit_rcu+0x50/0xf0 kernel/softirq.c:648
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:660
 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:schedule_debug kernel/sched/core.c:5717 [inline]
RIP: 0010:__schedule+0x119/0x1590 kernel/sched/core.c:6402
Code: 33 49 8d 5e 20 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 b6 bc ce fc 48 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 <74> 08 48 89 df e8 9d bc ce fc 48 81 3b 9d 6e ac 57 0f 85 87 0f 00
RSP: 0018:ffffc900013272a0 EFLAGS: 00000246
RAX: 1ffff92000264000 RBX: ffffc90001320000 RCX: 1ffff92000264e60
RDX: 0000000000000000 RSI: ffffffff85a32ee0 RDI: ffffffff85a32ea0
RBP: ffffc90001327388 R08: dffffc0000000000 R09: ffffed10251334f1
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff88812899a780 R15: ffff8881f7000000
 preempt_schedule_common+0x9b/0xf0 kernel/sched/core.c:6688
 preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6713
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock+0x60/0x70 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:403 [inline]
 zap_pte_range mm/memory.c:1500 [inline]
 zap_pmd_range mm/memory.c:1559 [inline]
 zap_pud_range mm/memory.c:1588 [inline]
 zap_p4d_range mm/memory.c:1609 [inline]
 unmap_page_range+0x1976/0x1ed0 mm/memory.c:1630
 unmap_single_vma mm/memory.c:1675 [inline]
 unmap_vmas+0x389/0x560 mm/memory.c:1707
 exit_mmap+0x3e4/0x940 mm/mmap.c:3215
 __mmput+0x95/0x310 kernel/fork.c:1179
 mmput+0x5b/0x170 kernel/fork.c:1202
 exit_mm kernel/exit.c:552 [inline]
 do_exit+0xb9c/0x2ca0 kernel/exit.c:865
 do_group_exit+0x141/0x310 kernel/exit.c:1000
 get_signal+0x7a3/0x1630 kernel/signal.c:2896
 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214
 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:320
 irqentry_exit+0x12/0x40 kernel/entry/common.c:411
 sysvec_apic_timer_interrupt+0x55/0xc0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0033:0x7faeca2d8935
Code: Unable to access opcode bytes at RIP 0x7faeca2d890b.
RSP: 002b:00007faec9083060 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 00007faeca5c1f80 RCX: 00007faeca47b046
RDX: 0000000000000000 RSI: 0000000000005452 RDI: 000000000000000b
RBP: 00007faeca47b046 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007faeca5c1f80 R15: 00007fffe9976ec8
 </TASK>