watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [syz.1.632:4153]
Modules linked in:
CPU: 1 PID: 4153 Comm: syz.1.632 Not tainted 5.15.161-syzkaller-00425-gb92c0d35d015 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:kvfree_call_rcu+0x617/0x8b0 kernel/rcu/tree.c:3686
Code: 05 bf 08 00 00 00 4c 89 fa 4c 89 f1 e8 02 8b eb ff 49 81 c4 e8 00 00 00 4c 89 e7 48 8b 74 24 18 e8 de 78 89 03 48 8b 5c 24 28 <48> c7 44 24 40 0e 36 e0 45 49 c7 44 1d 00 00 00 00 00 49 c7 44 1d
RSP: 0018:ffffc900001d0360 EFLAGS: 00000202
RAX: 0000000000000502 RBX: 1ffff9200003a074 RCX: 0000000000000503
RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000001
RBP: ffffc900001d04c8 R08: dffffc0000000000 R09: ffffed103ee24ee8
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f7127730
R13: dffffc0000000000 R14: 00000000000001f4 R15: ffff8881f7127738
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c26e5db CR3: 0000000128a4d000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 neigh_destroy+0x411/0x540 net/core/neighbour.c:860
 neigh_release include/net/neighbour.h:427 [inline]
 neigh_cleanup_and_release+0x73/0x1b0 net/core/neighbour.c:103
 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
 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:finish_task_switch+0x16f/0x7b0 kernel/sched/core.c:5024
Code: 74 08 4c 89 ff e8 91 70 65 00 49 8b 1f 48 85 db 4c 8b 6d c0 0f 85 ce 00 00 00 4c 89 e7 e8 89 c9 98 03 fb 49 8d 9d 38 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:ffffc90000bf71e0 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff88810e00c678 RCX: 0000000000000002
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90000bf7230 R08: ffffffff8191fd19 R09: fffffbfff0e52e93
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f71378c0
R13: ffff88810e00bb40 R14: 1ffff1103ee27081 R15: ffff8881f7138408
 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:__stack_depot_save+0x0/0x470 lib/stackdepot.c:275
Code: eb 02 31 c0 5b 41 5e 41 5f 5d c3 48 c7 c7 80 c8 d9 86 4c 89 fe e8 80 35 00 00 eb c2 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 30 41 89 cc 41 89
RSP: 0018:ffffc90000bf74c8 EFLAGS: 00000246
RAX: 0000000000000010 RBX: ffff88810e00c0d0 RCX: 0000000000000001
RDX: 0000000000002800 RSI: 0000000000000010 RDI: ffffc90000bf7520
RBP: ffffc90000bf74d0 R08: ffffc90000bf7448 R09: 000000000000000f
R10: ffffc90000bf7450 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff9200017eea0 R14: ffffc90000bf7520 R15: 1ffff11021c0181a
 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
 __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: 0033:0x7f49e4993ef9
Code: Unable to access opcode bytes at RIP 0x7f49e4993ecf.
RSP: 002b:00007f49e35ec038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: fffffffffffffff2 RBX: 00007f49e4b4c058 RCX: 00007f49e4993ef9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007f49e4a06b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f49e4b4c058 R15: 00007ffe146e7e58
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4490 Comm: syz.1.704 Not tainted 5.15.161-syzkaller-00425-gb92c0d35d015 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:rep_nop arch/x86/include/asm/vdso/processor.h:13 [inline]
RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:18 [inline]
RIP: 0010:queued_write_lock_slowpath+0x152/0x440 kernel/locking/qrwlock.c:78
Code: 00 e8 52 7a 5d 00 f0 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
RSP: 0018:ffffc90000007460 EFLAGS: 00000206
RAX: 00000000000001ff RBX: 1ffff92000000e96 RCX: ffffffff81552eae
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff87194d88
RBP: ffffc90000007510 R08: dffffc0000000000 R09: fffffbfff0e329b2
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900000074b0
R13: dffffc0000000000 R14: 1ffffffff0e329b1 R15: ffffffff87194d88
FS:  0000555556737500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3041c0e8 CR3: 0000000135c86000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <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_forced_gc net/core/neighbour.c:236 [inline]
 neigh_alloc net/core/neighbour.c:429 [inline]
 ___neigh_create+0x1f3/0x1bd0 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
 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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x57/0x80 kernel/locking/spinlock.c:194
Code: ad 86 e8 4c a6 cc fc 48 83 3d 1c 58 c7 01 00 74 35 48 89 df e8 be 0d 6f fc 66 90 41 f7 c6 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 14 56 66 fc 65 8b 05 a5 6c 1c 7b 85 c0 74 05 5b 41 5e 5d c3 e8
RSP: 0018:ffffc9000105fbd0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: ffff88810b748000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000001
RBP: ffffc9000105fbe0 R08: ffffffff81452c6c R09: ffffed102308d279
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11022808870
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000000
 spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
 unlock_task_sighand include/linux/sched/signal.h:718 [inline]
 do_send_sig_info+0xfb/0x230 kernel/signal.c:1304
 group_send_sig_info+0x113/0x460 kernel/signal.c:1451
 bpf_send_signal_common+0x2d8/0x420 kernel/trace/bpf_trace.c:824
 ____bpf_send_signal kernel/trace/bpf_trace.c:829 [inline]
 bpf_send_signal+0x19/0x20 kernel/trace/bpf_trace.c:827
 bpf_prog_7ba5217f62dcd359+0x38/0xcbc
 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline]
 bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1917
 __bpf_trace_sys_enter+0x62/0x70 include/trace/events/syscalls.h:18
 trace_sys_enter include/trace/events/syscalls.h:18 [inline]
 syscall_trace_enter kernel/entry/common.c:77 [inline]
 __syscall_enter_from_user_work kernel/entry/common.c:96 [inline]
 syscall_enter_from_user_mode+0x197/0x1b0 kernel/entry/common.c:114
 do_syscall_64+0x1e/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f387f874879
Code: 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 04 25
RSP: 002b:00007fff1873ca00 EFLAGS: 00000293 ORIG_RAX: 000000000000000f
RAX: ffffffffffffffda RBX: 00007f387fa90f80 RCX: 00007f387f874879
RDX: 00007fff1873ca00 RSI: 00007fff1873cb30 RDI: 0000000000000011
RBP: 00007f387fa92a80 R08: 0000000000000000 R09: 00007fff187a70b0
R10: 0000000000000000 R11: 0000000000000293 R12: 00000000001a6eec
R13: 00007fff1873d130 R14: 0000000000000032 R15: ffffffffffffffff
 </TASK>