syzbot


BUG: soft lockup in addrconf_dad_work

Status: premoderation: reported on 2024/04/27 14:56
Reported-by: syzbot+d08d685cc2a6dd448136@syzkaller.appspotmail.com
First crash: 81d, last: 26d
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 BUG: soft lockup in addrconf_dad_work 1 366d 366d 0/3 auto-obsoleted due to no activity on 2023/10/25 16:01
upstream INFO: rcu detected stall in addrconf_dad_work (5) kasan mm wireless C done inconclusive 12 26d 1409d 0/27 upstream: reported C repro on 2020/09/07 15:59
upstream BUG: soft lockup in addrconf_dad_work net C done 1 1771d 1771d 13/27 fixed on 2019/10/09 10:54
linux-4.19 BUG: soft lockup in addrconf_dad_work C error 55 544d 885d 0/1 upstream: reported C repro on 2022/02/13 10:05

Sample crash report:
watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [kworker/1:0:26]
Modules linked in:
CPU: 1 PID: 26 Comm: kworker/1:0 Not tainted 5.15.149-syzkaller-00165-g85445b5a2107 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
RIP: 0010:kvm_wait+0x147/0x180 arch/x86/kernel/kvm.c:918
Code: 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 34 41 0f b6 45 00 44 38 f0 75 10 66 90 0f 00 2d 4b 02 f3 03 fb f4 <e9> 24 ff ff ff fb e9 1e ff ff ff 44 89 e9 80 e1 07 38 c1 7c a3 4c
RSP: 0018:ffffc900001b7200 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff92000036e44 RCX: 1ffffffff0d1aa9c
RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff8881f7138ad4
RBP: ffffc900001b72b0 R08: dffffc0000000000 R09: ffffed103ee2715b
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881f7138ad4 R14: 0000000000000001 R15: 1ffff92000036e48
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000786c6c257830 CR3: 0000000128618000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 pv_wait arch/x86/include/asm/paravirt.h:597 [inline]
 pv_wait_node kernel/locking/qspinlock_paravirt.h:325 [inline]
 __pv_queued_spin_lock_slowpath+0x41b/0xc40 kernel/locking/qspinlock.c:473
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:178
 sock_hash_delete_elem+0xb1/0x2f0 net/core/sock_map.c:937
 bpf_prog_2c29ac5cdc6b1842+0x3a/0x1c4
 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
 __bpf_prog_run include/linux/filter.h:625 [inline]
 bpf_prog_run include/linux/filter.h:632 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline]
 bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1917
 __bpf_trace_kfree+0x6f/0x90 include/trace/events/kmem.h:118
 trace_kfree include/trace/events/kmem.h:118 [inline]
 kfree+0x1f3/0x220 mm/slub.c:4569
 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:2548
 rtnl_notify+0x9c/0xd0 net/core/rtnetlink.c:730
 inet6_ifa_notify net/ipv6/addrconf.c:5532 [inline]
 __ipv6_ifa_notify+0x32a/0x11c0 net/ipv6/addrconf.c:6163
 ipv6_ifa_notify net/ipv6/addrconf.c:6215 [inline]
 addrconf_dad_completed+0x177/0xd80 net/ipv6/addrconf.c:4242
 addrconf_dad_work+0xdc1/0x1710
 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325
 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 361 Comm: syz-executor.3 Not tainted 5.15.149-syzkaller-00165-g85445b5a2107 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:perf_callchain_store include/linux/perf_event.h:1307 [inline]
RIP: 0010:perf_callchain_kernel+0x3ae/0x640 arch/x86/events/core.c:2784
Code: 00 00 4c 89 ff e8 a2 d1 33 00 49 89 c6 31 ff 48 89 c6 e8 35 3b 6f 00 4d 85 f6 0f 84 cd 01 00 00 48 8b 44 24 30 42 0f b6 04 20 <84> c0 0f 85 0c 01 00 00 48 8b 44 24 10 44 8b 38 48 8b 44 24 58 42
RSP: 0018:ffffc90000007600 EFLAGS: 00000086
RAX: 0000000000000000 RBX: ffff88810c3788f0 RCX: ffff88810b6c4f00
RDX: 0000000000010605 RSI: ffffffff8184f4d7 RDI: 0000000000000000
RBP: ffffc90000007750 R08: ffffffff8101006b R09: ffffc90000007680
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff92000000ecc R14: ffffffff8184f4d7 R15: ffffc90000007680
FS:  00007f40ac4056c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000786c6c257830 CR3: 00000001279a1000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 get_perf_callchain+0x579/0x810 kernel/events/callchain.c:200
 perf_callchain kernel/events/core.c:7428 [inline]
 perf_prepare_sample+0x359/0x1a80 kernel/events/core.c:7455
 __perf_event_output kernel/events/core.c:7624 [inline]
 perf_event_output_forward+0xdb/0x1b0 kernel/events/core.c:7644
 __perf_event_overflow+0x20b/0x390 kernel/events/core.c:9314
 perf_swevent_hrtimer+0x3fd/0x560 kernel/events/core.c:10710
 __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:1085 [inline]
 __sysvec_apic_timer_interrupt+0xfd/0x3c0 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x95/0xc0 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: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:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:437 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x5b8/0xc40 kernel/locking/qspinlock.c:508
Code: 3b 01 00 00 49 89 dc c6 03 00 48 8b 44 24 10 0f b6 04 10 84 c0 0f 85 48 01 00 00 48 8b 44 24 08 c6 00 01 bb 00 80 ff ff eb 06 <f3> 90 ff c3 74 5e 41 0f b6 44 15 00 84 c0 75 36 41 80 3f 00 75 ea
RSP: 0018:ffffc900038e6a60 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 00000000fffff9f3 RCX: ffffffff8154fb7f
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff88810d19e4d8
RBP: ffffc900038e6b50 R08: dffffc0000000000 R09: ffffed1021a33c9c
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f7038ad4
R13: 1ffff11021a33c9b R14: 1ffff1103ee00001 R15: ffff88810d19e4d8
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:178
 sock_hash_delete_elem+0xb1/0x2f0 net/core/sock_map.c:937
 bpf_prog_2c29ac5cdc6b1842+0x3a/0x1c4
 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
 __bpf_prog_run include/linux/filter.h:625 [inline]
 bpf_prog_run include/linux/filter.h:632 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline]
 bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1917
 __bpf_trace_kfree+0x6f/0x90 include/trace/events/kmem.h:118
 trace_kfree include/trace/events/kmem.h:118 [inline]
 kfree+0x1f3/0x220 mm/slub.c:4569
 sk_psock_free_link include/linux/skmsg.h:420 [inline]
 sock_map_del_link net/core/sock_map.c:160 [inline]
 sock_map_unref+0x352/0x4d0 net/core/sock_map.c:182
 sock_hash_delete_elem+0x274/0x2f0 net/core/sock_map.c:941
 bpf_prog_2c29ac5cdc6b1842+0x3a/0x1c4
 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
 __bpf_prog_run include/linux/filter.h:625 [inline]
 bpf_prog_run include/linux/filter.h:632 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline]
 bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1917
 __bpf_trace_kfree+0x6f/0x90 include/trace/events/kmem.h:118
 trace_kfree include/trace/events/kmem.h:118 [inline]
 kfree+0x1f3/0x220 mm/slub.c:4569
 copy_array kernel/bpf/verifier.c:775 [inline]
 copy_verifier_state+0xd7/0xcc0 kernel/bpf/verifier.c:953
 push_stack+0x19d/0x4f0 kernel/bpf/verifier.c:1051
 check_cond_jmp_op kernel/bpf/verifier.c:9278 [inline]
 do_check+0xceac/0xf2c0 kernel/bpf/verifier.c:11399
 do_check_common+0x909/0x1290 kernel/bpf/verifier.c:13409
 do_check_main kernel/bpf/verifier.c:13472 [inline]
 bpf_check+0x3835/0x12bf0 kernel/bpf/verifier.c:14043
 bpf_prog_load+0x12ac/0x1b50 kernel/bpf/syscall.c:2333
 __sys_bpf+0x4bc/0x760 kernel/bpf/syscall.c:4633
 __do_sys_bpf kernel/bpf/syscall.c:4737 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4735 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:4735
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f40ad08b0a9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f40ac4050c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f40ad1c1f80 RCX: 00007f40ad08b0a9
RDX: 0000000000000048 RSI: 00000000200017c0 RDI: 0000000000000005
RBP: 00007f40ad0fa074 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f40ad1c1f80 R15: 00007fff6b94b1f8
 </TASK>

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/21 17:30 android13-5.15-lts 85445b5a2107 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: soft lockup in addrconf_dad_work
2024/05/03 08:20 android13-5.15-lts 5d96939590c0 ddfc15a1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in addrconf_dad_work
2024/04/27 14:55 android13-5.15-lts 5d96939590c0 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in addrconf_dad_work
* Struck through repros no longer work on HEAD.