INFO: rcu detected stall in addrconf_rs_timer

Status: upstream: reported C repro on 2023/12/10 10:27
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+6048fb0d928dbb84c58f@syzkaller.appspotmail.com
First crash: 967d, last: 7d20h
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2025/12/04 linux-5.15.y (ToT) cc5ec8769306 C [report] INFO: rcu detected stall in corrupted
2025/12/04 upstream (ToT) 559e608c4655 C Didn't crash
▶ ▼ Similar bugs (32)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in addrconf_rs_timer (2) net 1 362 2496d 2518d 13/29 fixed on 2019/10/21 12:31
linux-4.14 INFO: rcu detected stall in addrconf_rs_timer 1 syz, C error 220 2160d 2523d 0/1 upstream: reported C repro on 2019/09/06 14:33
upstream INFO: rcu detected stall in addrconf_rs_timer net 1 38 2783d 2878d 0/29 closed as dup on 2019/01/02 16:33
linux-4.19 INFO: rcu detected stall in addrconf_rs_timer 1 45 2510d 2523d 0/1 auto-closed as invalid on 2019/12/17 18:46
linux-4.19 BUG: soft lockup in addrconf_rs_timer 1 syz error 24 1281d 1963d 0/1 upstream: reported syz repro on 2021/03/19 06:05
linux-5.15 BUG: soft lockup in addrconf_rs_timer 1 syz, C error 36 1146d 1158d 0/3 auto-obsoleted due to no activity on 2023/08/23 09:06
linux-6.6 INFO: rcu detected stall in addrconf_rs_timer origin:lts-only 1 syz, C inconclusive 29 7d23h 246d 0/2 upstream: reported C repro on 2025/11/29 19:55
upstream INFO: rcu detected stall in addrconf_rs_timer (3) net 1 syz, C inconclusive done 81 2418d 2414d 15/29 fixed on 2020/02/18 14:31
linux-4.19 INFO: rcu detected stall in addrconf_rs_timer (2) 1 5 2161d 2234d 0/1 auto-closed as invalid on 2020/12/31 12:17
upstream INFO: rcu detected stall in addrconf_rs_timer (5) kvm 1 4 1560d 1560d 0/29 auto-closed as invalid on 2022/06/24 22:41
upstream INFO: rcu detected stall in addrconf_rs_timer (4) net 1 syz, C error error 121 1736d 2190d 0/29 closed as invalid on 2022/02/08 10:39
linux-6.1 INFO: rcu detected stall in addrconf_rs_timer origin:lts-only 1 syz, C done 124 8d04h 800d 0/3 upstream: reported C repro on 2024/05/24 18:08
upstream INFO: rcu detected stall in addrconf_rs_timer (6) prio:normal virt mm netfilter 1 syz error error 704 6d18h 793d 0/29 upstream: reported syz repro on 2024/06/01 13:51
upstream BUG: soft lockup in addrconf_rs_timer (3) net 1 syz 8 1040d 1104d 0/29 auto-obsoleted due to no activity on 2024/01/05 16:48
upstream BUG: soft lockup in addrconf_rs_timer (4) net 1 1 936d 936d 0/29 closed as invalid on 2024/03/12 13:17
android-6-1 BUG: soft lockup in addrconf_rs_timer 1 1 1009d 1009d 0/2 auto-obsoleted due to no activity on 2024/01/27 13:54
android-5-10 BUG: soft lockup in addrconf_rs_timer (2) 1 syz, C 265 440d 771d 0/2 auto-obsoleted due to no activity on 2025/07/28 18:01
android-6-1 BUG: soft lockup in addrconf_rs_timer (5) origin:lts 1 syz, C 6 80d 84d 0/2 upstream: reported C repro on 2026/05/10 21:46
android-5-10 BUG: soft lockup in addrconf_rs_timer 1 2 1099d 1117d 0/2 auto-obsoleted due to no activity on 2023/10/29 01:38
linux-6.1 BUG: soft lockup in addrconf_rs_timer 1 syz, C done 26 1146d 1158d 3/3 fixed on 2023/07/30 15:47
linux-4.14 BUG: soft lockup in addrconf_rs_timer 1 syz, C error 133 1318d 2521d 0/1 upstream: reported C repro on 2019/09/08 14:09
android-5-10 BUG: soft lockup in addrconf_rs_timer (3) 1 1 180d 180d 0/2 auto-obsoleted due to no activity on 2026/05/05 01:45
android-5-15 BUG: soft lockup in addrconf_rs_timer (3) 1 1 104d 104d 0/2 auto-obsoleted due to no activity on 2026/07/19 17:10
android-5-15 BUG: soft lockup in addrconf_rs_timer (2) 1 syz 99 585d 828d 0/2 auto-obsoleted due to no activity on 2025/02/14 09:13
android-6-1 BUG: soft lockup in addrconf_rs_timer (3) 1 1 485d 485d 0/2 auto-obsoleted due to no activity on 2025/07/03 20:11
android-54 BUG: soft lockup in addrconf_rs_timer 1 190 760d 815d 0/2 auto-obsoleted due to no activity on 2024/08/22 17:20
android-5-10 BUG: soft lockup in addrconf_rs_timer (4) 1 1 33d 33d 0/2 premoderation: reported on 2026/06/30 19:53
android-6-1 BUG: soft lockup in addrconf_rs_timer (2) 1 syz 176 606d 811d 0/2 auto-obsoleted due to no activity on 2025/01/24 01:43
upstream BUG: soft lockup in addrconf_rs_timer (2) net 1 syz, C 51 1139d 1159d 23/29 fixed on 2023/07/04 09:17
android-6-1 BUG: soft lockup in addrconf_rs_timer (4) 1 7 208d 356d 0/2 auto-obsoleted due to no activity on 2026/04/06 21:21
android-5-15 BUG: soft lockup in addrconf_rs_timer 1 1 1107d 1107d 0/2 auto-obsoleted due to no activity on 2023/10/21 14:14
upstream BUG: soft lockup in addrconf_rs_timer net 1 18 2324d 2521d 0/29 auto-closed as invalid on 2020/07/20 22:25
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2026/06/01 04:35 22m retest repro linux-5.15.y report log
2026/06/01 04:35 19m retest repro linux-5.15.y report log
2026/06/01 04:35 23m retest repro linux-5.15.y report log
2026/06/01 04:35 18m retest repro linux-5.15.y report log
2026/04/06 14:23 16m retest repro linux-5.15.y report log
2026/04/06 14:23 25m retest repro linux-5.15.y report log
2026/04/06 14:23 18m retest repro linux-5.15.y OK log
2026/04/06 03:34 22m retest repro linux-5.15.y report log
2026/02/23 08:17 17m retest repro linux-5.15.y report log
2026/02/23 08:17 11m retest repro linux-5.15.y report log
▶ ▼ Fix bisection attempts (5)
Created Duration User Patch Repo Result
2026/03/27 02:25 6m fix candidate upstream error job log
2026/02/24 22:08 1m fix candidate upstream error job log
2026/01/25 19:44 7m fix candidate upstream error job log
2025/12/26 17:45 26m fix candidate upstream error job log
2024/04/15 12:50 1h48m bisect fix linux-5.15.y error job log

Sample crash report:
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10500 ticks this GP) idle=4a1/1/0x4000000000000000 softirq=7583/7583 fqs=0 
	(t=10501 jiffies g=8733 q=733)
rcu: rcu_preempt kthread starved for 10502 jiffies! g8733 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:27800 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2117
 rcu_gp_fqs_loop+0x2be/0x11d0 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0x9b/0x370 kernel/rcu/tree.c:2145
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 4564 Comm: syz.3.63 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 <IRQ>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_check_gp_kthread_starvation+0x1cd/0x250 kernel/rcu/tree_stall.h:487
 print_cpu_stall+0x318/0x5f0 kernel/rcu/tree_stall.h:631
 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
 rcu_pending kernel/rcu/tree.c:3936 [inline]
 rcu_sched_clock_irq+0x6ea/0x1120 kernel/rcu/tree.c:2619
 update_process_times+0x193/0x200 kernel/time/timer.c:2021
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x37d/0x560 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4b4/0xb70 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1108
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:seqcount_lockdep_reader_access+0x196/0x1d0 include/linux/seqlock.h:106
Code: 00 4d 85 e4 75 16 e8 a9 fc 0f 00 eb 15 e8 a2 fc 0f 00 e8 bd 91 53 08 4d 85 e4 74 ea e8 93 fc 0f 00 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 43 c7 44 3e 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90000006e60 EFLAGS: 00000246
RAX: ffffffff816937fd RBX: 0000000000000000 RCX: ffff88802201bb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000006f18 R08: ffffffff901d51df R09: 1ffffffff203aa3b
R10: dffffc0000000000 R11: fffffbfff203aa3c R12: 0000000000000200
R13: 000001fb63109b96 R14: 1ffff92000000dcc R15: dffffc0000000000
 ktime_get_with_offset+0x90/0x320 kernel/time/timekeeping.c:872
 ktime_get_real include/linux/timekeeping.h:79 [inline]
 __net_timestamp include/linux/skbuff.h:3970 [inline]
 netif_rx_internal+0x380/0x560 net/core/dev.c:4992
 netif_rx+0x94/0x380 net/core/dev.c:5044
 veth_forward_skb drivers/net/veth.c:297 [inline]
 veth_xmit+0x605/0xa60 drivers/net/veth.c:350
 __netdev_start_xmit include/linux/netdevice.h:5036 [inline]
 netdev_start_xmit include/linux/netdevice.h:5050 [inline]
 xmit_one net/core/dev.c:3662 [inline]
 dev_hard_start_xmit+0x2a5/0x7e0 net/core/dev.c:3678
 __dev_queue_xmit+0x1a9b/0x2f80 net/core/dev.c:4305
 hsr_xmit net/hsr/hsr_forward.c:340 [inline]
 hsr_forward_do net/hsr/hsr_forward.c:431 [inline]
 hsr_forward_skb+0xfd2/0x1700 net/hsr/hsr_forward.c:584
 hsr_dev_xmit+0x1c2/0x2e0 net/hsr/hsr_device.c:241
 __netdev_start_xmit include/linux/netdevice.h:5036 [inline]
 netdev_start_xmit include/linux/netdevice.h:5050 [inline]
 xmit_one net/core/dev.c:3662 [inline]
 dev_hard_start_xmit+0x2a5/0x7e0 net/core/dev.c:3678
 __dev_queue_xmit+0x1a9b/0x2f80 net/core/dev.c:4305
 neigh_output include/net/neighbour.h:509 [inline]
 ip6_finish_output2+0x108c/0x1510 net/ipv6/ip6_output.c:130
 dst_output include/net/dst.h:452 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 ndisc_send_skb+0xc2a/0x1500 net/ipv6/ndisc.c:513
 addrconf_rs_timer+0x2d1/0x630 net/ipv6/addrconf.c:3956
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
 expire_timers kernel/time/timer.c:1699 [inline]
 __run_timers+0x53e/0x800 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 handle_softirqs+0x339/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:mark_wake_futex+0x0/0x150 kernel/futex/core.c:1536
Code: c1 03 38 c1 0f 8c 43 ff ff ff 48 c7 c7 c4 23 8a 8d e8 74 c8 50 00 e9 32 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <55> 41 57 41 56 41 55 41 54 53 49 89 f6 48 89 fb 49 bd 00 00 00 00
RSP: 0018:ffffc9000420fb78 EFLAGS: 00000297
RAX: ffffffff816d0359 RBX: 00000000ffffffff RCX: ffff88802201bb80
RDX: 0000000000000000 RSI: ffffc900041ffb90 RDI: ffffc9000420fc00
RBP: ffffc9000420fc70 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000841f60 R12: ffffc90000e0d148
R13: dffffc0000000000 R14: ffffc900041ffb90 R15: 00000000ffffffff
 futex_wake+0x3c2/0x540 kernel/futex/core.c:1695
 do_futex+0xd73/0x12b0 kernel/futex/core.c:3988
 __do_sys_futex kernel/futex/core.c:4060 [inline]
 __se_sys_futex+0x389/0x420 kernel/futex/core.c:4041
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f8893619dd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8892c7b0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f8893892fa8 RCX: 00007f8893619dd9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f8893892fac
RBP: 00007f8893892fa0 R08: 0035de9a766d276a R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8893893038 R14: 00007fff12702f30 R15: 00007fff12703018
 </TASK>
NMI backtrace for cpu 0
CPU: 0 PID: 4564 Comm: syz.3.63 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 <IRQ>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_dump_cpu_stacks+0x22f/0x380 kernel/rcu/tree_stall.h:349
 print_cpu_stall+0x31d/0x5f0 kernel/rcu/tree_stall.h:633
 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
 rcu_pending kernel/rcu/tree.c:3936 [inline]
 rcu_sched_clock_irq+0x6ea/0x1120 kernel/rcu/tree.c:2619
 update_process_times+0x193/0x200 kernel/time/timer.c:2021
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x37d/0x560 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4b4/0xb70 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1108
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:seqcount_lockdep_reader_access+0x196/0x1d0 include/linux/seqlock.h:106
Code: 00 4d 85 e4 75 16 e8 a9 fc 0f 00 eb 15 e8 a2 fc 0f 00 e8 bd 91 53 08 4d 85 e4 74 ea e8 93 fc 0f 00 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 43 c7 44 3e 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90000006e60 EFLAGS: 00000246
RAX: ffffffff816937fd RBX: 0000000000000000 RCX: ffff88802201bb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000006f18 R08: ffffffff901d51df R09: 1ffffffff203aa3b
R10: dffffc0000000000 R11: fffffbfff203aa3c R12: 0000000000000200
R13: 000001fb63109b96 R14: 1ffff92000000dcc R15: dffffc0000000000
 ktime_get_with_offset+0x90/0x320 kernel/time/timekeeping.c:872
 ktime_get_real include/linux/timekeeping.h:79 [inline]
 __net_timestamp include/linux/skbuff.h:3970 [inline]
 netif_rx_internal+0x380/0x560 net/core/dev.c:4992
 netif_rx+0x94/0x380 net/core/dev.c:5044
 veth_forward_skb drivers/net/veth.c:297 [inline]
 veth_xmit+0x605/0xa60 drivers/net/veth.c:350
 __netdev_start_xmit include/linux/netdevice.h:5036 [inline]
 netdev_start_xmit include/linux/netdevice.h:5050 [inline]
 xmit_one net/core/dev.c:3662 [inline]
 dev_hard_start_xmit+0x2a5/0x7e0 net/core/dev.c:3678
 __dev_queue_xmit+0x1a9b/0x2f80 net/core/dev.c:4305
 hsr_xmit net/hsr/hsr_forward.c:340 [inline]
 hsr_forward_do net/hsr/hsr_forward.c:431 [inline]
 hsr_forward_skb+0xfd2/0x1700 net/hsr/hsr_forward.c:584
 hsr_dev_xmit+0x1c2/0x2e0 net/hsr/hsr_device.c:241
 __netdev_start_xmit include/linux/netdevice.h:5036 [inline]
 netdev_start_xmit include/linux/netdevice.h:5050 [inline]
 xmit_one net/core/dev.c:3662 [inline]
 dev_hard_start_xmit+0x2a5/0x7e0 net/core/dev.c:3678
 __dev_queue_xmit+0x1a9b/0x2f80 net/core/dev.c:4305
 neigh_output include/net/neighbour.h:509 [inline]
 ip6_finish_output2+0x108c/0x1510 net/ipv6/ip6_output.c:130
 dst_output include/net/dst.h:452 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 ndisc_send_skb+0xc2a/0x1500 net/ipv6/ndisc.c:513
 addrconf_rs_timer+0x2d1/0x630 net/ipv6/addrconf.c:3956
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
 expire_timers kernel/time/timer.c:1699 [inline]
 __run_timers+0x53e/0x800 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 handle_softirqs+0x339/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:mark_wake_futex+0x0/0x150 kernel/futex/core.c:1536
Code: c1 03 38 c1 0f 8c 43 ff ff ff 48 c7 c7 c4 23 8a 8d e8 74 c8 50 00 e9 32 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <55> 41 57 41 56 41 55 41 54 53 49 89 f6 48 89 fb 49 bd 00 00 00 00
RSP: 0018:ffffc9000420fb78 EFLAGS: 00000297
RAX: ffffffff816d0359 RBX: 00000000ffffffff RCX: ffff88802201bb80
RDX: 0000000000000000 RSI: ffffc900041ffb90 RDI: ffffc9000420fc00
RBP: ffffc9000420fc70 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000841f60 R12: ffffc90000e0d148
R13: dffffc0000000000 R14: ffffc900041ffb90 R15: 00000000ffffffff
 futex_wake+0x3c2/0x540 kernel/futex/core.c:1695
 do_futex+0xd73/0x12b0 kernel/futex/core.c:3988
 __do_sys_futex kernel/futex/core.c:4060 [inline]
 __se_sys_futex+0x389/0x420 kernel/futex/core.c:4041
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f8893619dd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8892c7b0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f8893892fa8 RCX: 00007f8893619dd9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f8893892fac
RBP: 00007f8893892fa0 R08: 0035de9a766d276a R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8893893038 R14: 00007fff12702f30 R15: 00007fff12703018
 </TASK>

Crashes (117):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/05/04 02:18 linux-5.15.y ef251c45f1cd a0d91488 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/12/24 07:27 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/12/03 10:24 linux-5.15.y cc5ec8769306 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2024/11/17 01:10 linux-5.15.y d98fd109f827 cfe3a04a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in addrconf_rs_timer
2024/11/16 11:16 linux-5.15.y d98fd109f827 cfe3a04a .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in addrconf_rs_timer
2026/04/28 15:52 linux-5.15.y b9d57c40a767 ce741359 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2024/09/06 04:24 linux-5.15.y 14e468424d3e 464ac2ed .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan BUG: soft lockup in addrconf_rs_timer
2026/07/26 19:07 linux-5.15.y 674f684f7c61 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/07/23 00:34 linux-5.15.y c86c4726e7f0 881ce5c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/07/12 23:14 linux-5.15.y c86c4726e7f0 d78ea535 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/07/11 00:42 linux-5.15.y c86c4726e7f0 99e64375 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/07/02 22:54 linux-5.15.y eceeec79dbc6 2b70b115 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/07/01 01:14 linux-5.15.y eceeec79dbc6 00e8b0fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/06/30 09:34 linux-5.15.y eceeec79dbc6 fff8d0a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/06/29 22:53 linux-5.15.y eceeec79dbc6 6a0c72dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/06/28 20:54 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/06/21 15:14 linux-5.15.y eceeec79dbc6 43bfcdb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/06/04 20:12 linux-5.15.y dc027a595035 197909be .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/06/01 14:45 linux-5.15.y 241d66fa280c 8d8eeb3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/05/14 21:30 linux-5.15.y de8dfb3f0278 6ccb967e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/05/14 20:01 linux-5.15.y de8dfb3f0278 6ccb967e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/04/28 06:25 linux-5.15.y b9d57c40a767 ce741359 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/04/24 10:40 linux-5.15.y b9d57c40a767 9cfb3ca7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/04/20 01:20 linux-5.15.y b9d57c40a767 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/04/10 16:30 linux-5.15.y 91d48252ad4b 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/03/23 01:53 linux-5.15.y 91d48252ad4b 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/03/22 11:38 linux-5.15.y 91d48252ad4b 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/03/22 09:10 linux-5.15.y 91d48252ad4b 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/03/21 20:21 linux-5.15.y 91d48252ad4b 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/03/08 04:48 linux-5.15.y 91d48252ad4b 5cb44a80 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/03/01 22:25 linux-5.15.y 3330a8d33e08 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/02/09 06:40 linux-5.15.y 7b232985052f 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/01/31 03:24 linux-5.15.y 9eec9a14ee10 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/01/30 19:49 linux-5.15.y 9eec9a14ee10 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/01/25 05:32 linux-5.15.y 9eec9a14ee10 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/01/15 05:28 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/01/12 22:47 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/01/10 23:18 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/01/07 18:50 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/01/05 20:27 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/01/04 12:13 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/12/30 12:03 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/12/15 10:30 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/12/13 08:30 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/12/12 17:00 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/12/11 20:45 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/12/09 18:43 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/12/03 23:47 linux-5.15.y cc5ec8769306 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/12/02 15:49 linux-5.15.y cc5ec8769306 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/11/28 02:59 linux-5.15.y cc5ec8769306 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/11/18 13:55 linux-5.15.y cc5ec8769306 ef766cd7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/11/16 21:47 linux-5.15.y cc5ec8769306 f7988ea4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/11/15 15:02 linux-5.15.y cc5ec8769306 f7988ea4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/11/15 12:09 linux-5.15.y cc5ec8769306 f7988ea4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2025/04/21 05:17 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in addrconf_rs_timer
2025/02/13 19:38 linux-5.15.y c16c81c81336 a98a8417 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2023/12/10 10:26 linux-5.15.y 8a1d809b0545 28b24332 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: rcu detected stall in addrconf_rs_timer
2026/07/09 04:26 linux-5.15.y c86c4726e7f0 b9f1ceaa .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf BUG: soft lockup in addrconf_rs_timer
2026/05/03 14:11 linux-5.15.y ef251c45f1cd a0d91488 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf BUG: soft lockup in addrconf_rs_timer
2024/03/14 04:12 linux-5.15.y 574362648507 f919f202 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in addrconf_rs_timer
* Struck through repros no longer work on HEAD.