syzbot

 sign-in | mailing list | source | docs
🐞 Open [1451]
≡ Subsystems
🐞 Fixed [6928]
🐞 Invalid [18036]
⬇ Missing Backports [223]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
Total Repo Heatmap Subsystems Heatmap
💬 Send us feedback

BUG: soft lockup in hsr_announce

Status: closed as invalid on 2019/11/30 16:49
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+7ccc911be1cc4bcf23c5@syzkaller.appspotmail.com
First crash: 2272d, last: 2272d
▶ ▼ Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 BUG: soft lockup in hsr_announce (2) 1 7 1219d 1673d 0/1 auto-obsoleted due to no activity on 2023/02/15 11:56
upstream BUG: soft lockup in hsr_announce (2) net 1 3 874d 883d 0/29 auto-obsoleted due to no activity on 2023/12/27 12:08
linux-4.14 BUG: soft lockup in hsr_announce 1 C error 1 2238d 2238d 0/1 upstream: reported C repro on 2020/01/03 03:56
linux-4.19 BUG: soft lockup in hsr_announce 1 2 1916d 1941d 0/1 auto-closed as invalid on 2021/03/20 09:02
upstream BUG: soft lockup in hsr_announce (3) net 1 30 3d03h 301d 0/29 upstream: reported on 2025/04/23 07:51
upstream INFO: rcu detected stall in hsr_announce (7) net 1 30 372d 372d 0/29 closed as invalid on 2025/03/17 11:18

Sample crash report:
watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor.0:7904]
Modules linked in:
irq event stamp: 5294377
hardirqs last  enabled at (5294376): [<ffffffff81006743>] trace_hardirqs_on_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:41
hardirqs last disabled at (5294377): [<ffffffff8100675f>] trace_hardirqs_off_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:42
softirqs last  enabled at (195728): [<ffffffff87e006cd>] __do_softirq+0x6cd/0x98c kernel/softirq.c:319
softirqs last disabled at (207323): [<ffffffff81474a2b>] invoke_softirq kernel/softirq.c:373 [inline]
softirqs last disabled at (207323): [<ffffffff81474a2b>] irq_exit+0x19b/0x1e0 kernel/softirq.c:413
CPU: 1 PID: 7904 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:set_track mm/kasan/common.c:77 [inline]
RIP: 0010:__kasan_kmalloc mm/kasan/common.c:510 [inline]
RIP: 0010:__kasan_kmalloc.constprop.0+0xb3/0xe0 mm/kasan/common.c:483
Code: 83 c4 08 4c 89 e8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 89 55 d0 e8 1d 2c 00 00 48 8b 75 d0 e9 79 ff ff ff 49 63 9f 30 01 00 00 <44> 89 e7 65 48 8b 04 25 c0 1e 02 00 8b 80 d8 04 00 00 4c 01 eb 89
RSP: 0018:ffff88802d309a38 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: ffffed10031ccd40 RBX: 0000000000000200 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000000000fc RDI: ffffed10031ccd40
RBP: ffff88802d309a68 R08: 1ffffffff15d29b7 R09: ffffed10031ccd40
R10: fffffbfff15d29b7 R11: ffffffff8ae94dbf R12: 0000000000082a20
R13: ffff888018e66800 R14: 0000000000000000 R15: ffff88802cc00a80
FS:  00007f96463a6700(0000) GS:ffff88802d300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000006ff040 CR3: 0000000072b3b000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 kasan_slab_alloc+0xf/0x20 mm/kasan/common.c:518
 slab_post_alloc_hook mm/slab.h:584 [inline]
 slab_alloc_node mm/slab.c:3262 [inline]
 kmem_cache_alloc_node_trace+0x143/0x750 mm/slab.c:3592
 __do_kmalloc_node mm/slab.c:3614 [inline]
 __kmalloc_node_track_caller+0x3d/0x70 mm/slab.c:3629
 __kmalloc_reserve.isra.0+0x40/0xf0 net/core/skbuff.c:141
 pskb_expand_head+0x151/0xff0 net/core/skbuff.c:1628
 __skb_pad+0x196/0x610 net/core/skbuff.c:1805
 __skb_put_padto include/linux/skbuff.h:3193 [inline]
 skb_put_padto include/linux/skbuff.h:3212 [inline]
 send_hsr_supervision_frame+0xc26/0xf20 net/hsr/hsr_device.c:303
 hsr_announce+0x12f/0x3b0 net/hsr/hsr_device.c:334
 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786
 __do_softirq+0x262/0x98c kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x19b/0x1e0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x4f/0x80 kernel/locking/spinlock.c:199
Code: c0 68 34 53 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 33 48 83 3d 12 2a 99 01 00 74 20 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 e7 6b 96 f9 65 8b 05 18 14 48 78 85 c0 74 06 41
RSP: 0018:ffff8880724ff8d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff12a668d RBX: ffff8880724f4080 RCX: 0000000000000006
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff8880724f4914
RBP: ffff8880724ff8e0 R08: 1ffffffff15d29b8 R09: fffffbfff15d29b9
R10: fffffbfff15d29b8 R11: ffffffff8ae94dc7 R12: ffff88802d337380
R13: ffff88802c4b8380 R14: ffff88802c6f8a00 R15: 0000000000000000
 finish_lock_switch kernel/sched/core.c:3124 [inline]
 finish_task_switch+0x147/0x750 kernel/sched/core.c:3224
 context_switch kernel/sched/core.c:3388 [inline]
 __schedule+0x8e9/0x1f30 kernel/sched/core.c:4081
 preempt_schedule_common+0x4f/0xe0 kernel/sched/core.c:4236
 preempt_schedule+0x4b/0x60 kernel/sched/core.c:4261
 ___preempt_schedule+0x16/0x18 arch/x86/entry/thunk_64.S:50
 smp_call_function_single+0x410/0x480 kernel/smp.c:313
 task_function_call+0xe9/0x180 kernel/events/core.c:114
 perf_install_in_context+0x308/0x5a0 kernel/events/core.c:2746
 __do_sys_perf_event_open+0x1cbc/0x2c70 kernel/events/core.c:11543
 __se_sys_perf_event_open kernel/events/core.c:11151 [inline]
 __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:11151
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a759
Code: bd b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 8b b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f96463a5c88 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 000000000071bfa8 RCX: 000000000045a759
RDX: ffffff7fffffffff RSI: 0000000000000000 RDI: 000000002001d000
RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f96463a66d4
R13: 00000000004aec2b R14: 00000000006f1ca8 R15: 00000000ffffffff
Sending NMI from CPU 1 to CPUs 0,2-3:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60
NMI backtrace for cpu 2 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60
NMI backtrace for cpu 3
CPU: 3 PID: 7916 Comm: syz-executor.1 Not tainted 5.4.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:25 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:200 [inline]
RIP: 0010:native_write_msr+0x6/0x30 arch/x86/include/asm/msr.h:164
Code: d0 c3 0f 21 d8 c3 0f 21 f0 c3 0f 0b 0f 1f 84 00 00 00 00 00 0f 0b 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 89 f9 89 f0 0f 30 <0f> 1f 44 00 00 c3 55 48 c1 e2 20 89 f6 48 89 e5 48 09 d6 31 d2 e8
RSP: 0018:ffff88802d5099c8 EFLAGS: 00000082
RAX: 0000000047782ed6 RBX: 0000000000000000 RCX: 00000000000006e0
RDX: 000000000000006d RSI: 0000000047782ed6 RDI: 00000000000006e0
RBP: ffff88802d5099e0 R08: ffff888071e501c0 R09: ffff888071e50a50
R10: fffffbfff146dba0 R11: ffffffff8a36dd07 R12: ffff88802d5227c0
R13: 00000000000003aa R14: 0000000000000000 R15: 0000000000000001
FS:  00007f8fbf93a700(0000) GS:ffff88802d500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 0000000072ca5000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 clockevents_program_event+0x25c/0x370 kernel/time/clockevents.c:334
 tick_program_event+0xb4/0x130 kernel/time/tick-oneshot.c:44
 hrtimer_interrupt+0x369/0x770 kernel/time/hrtimer.c:1651
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline]
 smp_apic_timer_interrupt+0x160/0x610 arch/x86/kernel/apic/apic.c:1135
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline]
RIP: 0010:__in6_dev_get include/net/addrconf.h:309 [inline]
RIP: 0010:ipv6_get_lladdr+0x83/0x490 net/ipv6/addrconf.c:1864
Code: b3 0f c5 fa 45 85 e4 58 74 20 e8 28 0e c5 fa 44 0f b6 25 c7 82 82 03 31 ff 44 89 e6 e8 56 0f c5 fa 45 84 e4 0f 84 fa 02 00 00 <e8> 08 0e c5 fa 48 8d bb 20 03 00 00 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffff88802d509bf0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000102 RBX: ffff888073340000 RCX: ffffffff86afd323
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff88802d509c30 R08: ffff888071e501c0 R09: ffffed1005aa7045
R10: ffffed1005aa7044 R11: ffff88802d538223 R12: 0000000000000001
R13: ffff8880256b2968 R14: ffff8880256b2b34 R15: 0000000000000040
 addrconf_rs_timer+0x2d8/0x6e0 net/ipv6/addrconf.c:3878
 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786
 __do_softirq+0x262/0x98c kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x19b/0x1e0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x4f/0x80 kernel/locking/spinlock.c:199
Code: c0 68 34 53 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 33 48 83 3d 12 2a 99 01 00 74 20 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 e7 6b 96 f9 65 8b 05 18 14 48 78 85 c0 74 06 41
RSP: 0018:ffff888071e5f8d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff12a668d RBX: ffff888071e501c0 RCX: 0000000000000006
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff888071e50a54
RBP: ffff888071e5f8e0 R08: 1ffffffff15d29b8 R09: fffffbfff15d29b9
R10: fffffbfff15d29b8 R11: ffffffff8ae94dc7 R12: ffff88802d537380
R13: ffff888017b1d680 R14: ffff88802c6f8a00 R15: 0000000000000402
 finish_lock_switch kernel/sched/core.c:3124 [inline]
 finish_task_switch+0x147/0x750 kernel/sched/core.c:3224
 context_switch kernel/sched/core.c:3388 [inline]
 __schedule+0x8e9/0x1f30 kernel/sched/core.c:4081
 preempt_schedule_common+0x4f/0xe0 kernel/sched/core.c:4236
 preempt_schedule+0x4b/0x60 kernel/sched/core.c:4261
 ___preempt_schedule+0x16/0x18 arch/x86/entry/thunk_64.S:50
 smp_call_function_single+0x410/0x480 kernel/smp.c:313
 task_function_call+0xe9/0x180 kernel/events/core.c:114
 perf_install_in_context+0x308/0x5a0 kernel/events/core.c:2746
 __do_sys_perf_event_open+0x1cbc/0x2c70 kernel/events/core.c:11543
 __se_sys_perf_event_open kernel/events/core.c:11151 [inline]
 __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:11151
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a759
Code: bd b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 8b b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f8fbf939c88 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 000000000071bf00 RCX: 000000000045a759
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000a00
RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f8fbf93a6d4
R13: 00000000004aec2b R14: 00000000006f1ca8 R15: 00000000ffffffff

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/11/29 23:56 upstream 81b6b96475ac 3a75be00 .config console log report ci-qemu-upstream
2019/11/29 22:04 upstream 81b6b96475ac 3a75be00 .config console log report ci-qemu-upstream
* Struck through repros no longer work on HEAD.