watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.2.568:3171]
Modules linked in:
CPU: 1 PID: 3171 Comm: syz.2.568 Not tainted 5.15.167-syzkaller-android13-5.15.167_r00 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:queued_write_lock_slowpath+0x159/0x440 kernel/locking/qrwlock.c:78
Code: 41 81 0f 00 01 00 00 48 8b 5c 24 08 43 0f b6 04 2e 84 c0 0f 85 94 00 00 00 41 8b 07 3d 00 01 00 00 74 27 f3 90 43 0f b6 04 2e <84> c0 74 eb 44 89 f9 80 e1 07 80 c1 03 38 c1 7c de 4c 89 ff e8 3e
RSP: 0018:ffffc900001d0460 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 1ffff9200003a096 RCX: ffffffff815534be
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff871969c8
RBP: ffffc900001d0510 R08: dffffc0000000000 R09: fffffbfff0e32d3a
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900001d04b0
R13: dffffc0000000000 R14: 1ffffffff0e32d39 R15: ffffffff871969c8
FS:  00007f48688f76c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000013a2ba000 CR4: 00000000003506a0
DR0: 0000000020000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 queued_write_lock include/asm-generic/qrwlock.h:97 [inline]
 __raw_write_lock_bh include/linux/rwlock_api_smp.h:204 [inline]
 _raw_write_lock_bh+0x10a/0x170 kernel/locking/spinlock.c:324
 ___neigh_create+0xd0d/0x1bd0 net/core/neighbour.c:625
 __neigh_create+0x32/0x40 net/core/neighbour.c:679
 ip6_finish_output2+0x9ee/0x16f0 net/ipv6/ip6_output.c:127
 __ip6_finish_output+0x60f/0x7c0 net/ipv6/ip6_output.c:201
 ip6_finish_output+0x31/0x210 net/ipv6/ip6_output.c:211
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x1f7/0x4c0 net/ipv6/ip6_output.c:234
 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:511
 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:705
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3979
 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
 handle_softirqs+0x25e/0x5c0 kernel/softirq.c:565
 __do_softirq kernel/softirq.c:603 [inline]
 invoke_softirq kernel/softirq.c:425 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:652
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:664
 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:preempt_schedule_irq+0xc2/0x140 kernel/sched/core.c:6916
Code: 4c 89 e7 e8 90 7c cd fc f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 34 2f 67 fc fb bf 01 00 00 00 <e8> e9 e3 ff ff fa bf 01 00 00 00 e8 be 30 67 fc 65 48 8b 1d 76 40
RSP: 0018:ffffc90000e07d60 EFLAGS: 00000246
RAX: 1ffff11022903dae RBX: 1ffff920001c0fb0 RCX: ffffffff84e6ff00
RDX: 1ffffffff0e99c08 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90000e07df8 R08: ffffffff874ce040 R09: ffffffff874ce048
R10: ffffffff874ce058 R11: ffffffff874ce050 R12: ffffc90000e07d80
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920001c0fac
 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:__syscall_enter_from_user_work kernel/entry/common.c:93 [inline]
RIP: 0010:syscall_enter_from_user_mode+0x19/0x1b0 kernel/entry/common.c:114
Code: cc 55 48 89 e5 5d c3 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 49 89 f4 fb 65 4c 8b 3d 97 a2 21 7b <49> 8b 5f 08 f6 c3 3f 0f 84 d1 00 00 00 49 89 fe f6 c3 20 74 17 4c
RSP: 0018:ffffc90000e07ef8 EFLAGS: 00000286
RAX: 0000000000000000 RBX: ffffc90000e07f30 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000000000ca RDI: ffffc90000e07f58
RBP: ffffc90000e07f20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000000000ca
R13: 0000000000000000 R14: ffffc90000e07f58 R15: ffff88811481e2c0
 do_syscall_64+0x1e/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f4869c7e719
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:00007f48688f70e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f4869e35f88 RCX: 00007f4869c7e719
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f4869e35f8c
RBP: 00007f4869e35f80 R08: 00007ffe7d1f70b0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4869e35f8c
R13: 0000000000000000 R14: 00007ffe7d0eaad0 R15: 00007ffe7d0eabb8
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2213 Comm: syz.9.444 Not tainted 5.15.167-syzkaller-android13-5.15.167_r00 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:preempt_count_add+0x1/0x1a0 kernel/sched/core.c:5613
Code: fb bf 01 00 00 00 e8 1e 00 00 00 48 89 df e8 86 8d 9a 03 bf 01 00 00 00 e8 ac 01 00 00 5b 5d c3 66 0f 1f 84 00 00 00 00 00 55 <48> 89 e5 41 57 41 56 53 89 fb 48 c7 c0 80 5f 4d 87 48 c1 e8 03 49
RSP: 0018:ffffc90000006890 EFLAGS: 00000806
RAX: f3f3f304f1f1f1f1 RBX: 1ffff92000000d14 RCX: ffff88811669cf00
RDX: 0000000000010100 RSI: 0000000000002710 RDI: 0000000000000001
RBP: ffffc90000006930 R08: ffffffff8160b776 R09: fffffbfff0e5326e
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881f7029a00 R14: dffffc0000000000 R15: ffffc900000068c0
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 0000000006a0f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x42e/0xad0 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x40c/0xaa0 kernel/time/hrtimer.c:1813
 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+0x57/0x460 arch/x86/kernel/unwind_frame.c:195
Code: 89 45 b0 42 0f b6 04 30 84 c0 0f 85 ea 03 00 00 41 8b 07 89 45 a4 49 8d 7f 58 48 89 f8 48 c1 e8 03 48 89 45 90 42 80 3c 30 00 <48> 89 7d c8 74 09 e8 5e a3 7d 00 48 8b 7d c8 48 8b 07 48 85 c0 74
RSP: 0018:ffffc90000006c90 EFLAGS: 00000246
RAX: 1ffff92000000dc7 RBX: ffffc90000007200 RCX: 0000000000006e01
RDX: dffffc0000000000 RSI: ffffc90000007258 RDI: ffffc90000006e38
RBP: ffffc90000006d48 R08: ffffc90000006ec8 R09: 0000000000000004
R10: ffffc90000006ed0 R11: dffffc0000000001 R12: 0000000000000000
R13: ffffc90000006e30 R14: dffffc0000000000 R15: ffffc90000006de0
 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]
 kfree+0xc8/0x220 mm/slub.c:4579
 skb_free_head net/core/skbuff.c:656 [inline]
 skb_release_data+0x8a9/0xa80 net/core/skbuff.c:678
 skb_release_all net/core/skbuff.c:743 [inline]
 __kfree_skb net/core/skbuff.c:757 [inline]
 consume_skb+0xac/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:2550
 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/0x16f0 net/ipv6/ip6_output.c:127
 __ip6_finish_output+0x60f/0x7c0 net/ipv6/ip6_output.c:201
 ip6_finish_output+0x31/0x210 net/ipv6/ip6_output.c:211
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x1f7/0x4c0 net/ipv6/ip6_output.c:234
 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:511
 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:705
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3979
 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
 handle_softirqs+0x25e/0x5c0 kernel/softirq.c:565
 __do_softirq kernel/softirq.c:603 [inline]
 invoke_softirq kernel/softirq.c:425 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:652
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:664
 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:preempt_schedule_irq+0xc2/0x140 kernel/sched/core.c:6916
Code: 4c 89 e7 e8 90 7c cd fc f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 34 2f 67 fc fb bf 01 00 00 00 <e8> e9 e3 ff ff fa bf 01 00 00 00 e8 be 30 67 fc 65 48 8b 1d 76 40
RSP: 0018:ffffc90000a471e0 EFLAGS: 00000246
RAX: 1ffff11022cd3b36 RBX: 1ffff92000148e40 RCX: ffffffff84e6ff00
RDX: 1ffffffff0e99c00 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90000a47268 R08: ffffffff874ce000 R09: ffffffff874ce008
R10: ffffffff874ce018 R11: ffffffff874ce010 R12: ffffc90000a47200
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000148e3c
 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:arch_stack_walk+0x108/0x140 arch/x86/kernel/stacktrace.c:25
Code: ff ff ff 00 74 32 48 8d 9d 70 ff ff ff 48 89 df e8 1d 8d 05 00 48 85 c0 74 1e 4c 89 f7 48 89 c6 41 ff d5 84 c0 74 11 48 89 df <e8> 33 8e 05 00 83 bd 70 ff ff ff 00 75 d5 65 48 8b 04 25 28 00 00
RSP: 0018:ffffc90000a47360 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc90000a47360 RCX: 0000000000a47301
RDX: dffffc0000000000 RSI: ffffffff815f2e7a RDI: ffffc90000a47360
RBP: ffffc90000a473f0 R08: ffffc90000a47448 R09: 000000000000000e
R10: ffffc90000a47450 R11: dffffc0000000001 R12: ffff88811669cf00
R13: ffffffff815f77f0 R14: ffffc90000a47440 R15: 0000000000000000
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 save_stack+0xf6/0x1e0 mm/page_owner.c:139
 __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:417 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:519
 __fput+0x228/0x8c0 fs/file_table.c:280
 ____fput+0x15/0x20 fs/file_table.c:308
 task_work_run+0x129/0x190 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xc48/0x2ca0 kernel/exit.c:880
 do_group_exit+0x141/0x310 kernel/exit.c:1002
 get_signal+0x7a3/0x1630 kernel/signal.c:2904
 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
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f96a8f6f719
Code: Unable to access opcode bytes at RIP 0x7f96a8f6f6ef.
RSP: 002b:00007f96a7be80e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f96a9126f88 RCX: 00007f96a8f6f719
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f96a9126f8c
RBP: 00007f96a9126f80 R08: 00007fffc8fb20b0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f96a9126f8c
R13: 0000000000000000 R14: 00007fffc8fa3a60 R15: 00007fffc8fa3b48
 </TASK>