syzbot

 sign-in | mailing list | source | docs
🐞 Open [72] 🐞 Fixed [70] 🐞 Invalid [134] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes 💬 Send us feedback

BUG: soft lockup in addrconf_rs_timer

Status: auto-obsoleted due to no activity on 2023/10/29 01:38
Reported-by: syzbot+2e13e3952f69df2e3171@syzkaller.appspotmail.com
First crash: 290d, last: 272d
▶ ▼ Similar bugs (14)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: soft lockup in addrconf_rs_timer (3) net syz 8 213d 277d 0/26 auto-obsoleted due to no activity on 2024/01/05 16:48
upstream BUG: soft lockup in addrconf_rs_timer (4) net 1 108d 108d 0/26 closed as invalid on 2024/03/12 13:17
android-6-1 BUG: soft lockup in addrconf_rs_timer 1 181d 181d 0/2 auto-obsoleted due to no activity on 2024/01/27 13:54
linux-6.1 BUG: soft lockup in addrconf_rs_timer C done 26 319d 331d 3/3 fixed on 2023/07/30 15:47
linux-4.19 BUG: soft lockup in addrconf_rs_timer syz error 24 453d 1136d 0/1 upstream: reported syz repro on 2021/03/19 06:05
linux-4.14 BUG: soft lockup in addrconf_rs_timer C error 133 491d 1693d 0/1 upstream: reported C repro on 2019/09/08 14:09
linux-5.15 BUG: soft lockup in addrconf_rs_timer C error 36 319d 331d 0/3 auto-obsoleted due to no activity on 2023/08/23 09:06
android-5-15 BUG: soft lockup in addrconf_rs_timer (2) 1 1d02h 1d02h 0/2 premoderation: reported on 2024/04/27 11:00
upstream BUG: soft lockup in addrconf_rs_timer net 18 1497d 1694d 0/26 auto-closed as invalid on 2020/07/20 22:25
upstream BUG: soft lockup in addrconf_rs_timer (2) net C 51 311d 332d 23/26 fixed on 2023/07/04 09:17
android-5-15 BUG: soft lockup in addrconf_rs_timer 1 279d 279d 0/2 auto-obsoleted due to no activity on 2023/10/21 14:14
upstream INFO: rcu detected stall in addrconf_rs_timer (4) net C error error 121 909d 1363d 0/26 closed as invalid on 2022/02/08 10:39
linux-5.15 INFO: rcu detected stall in addrconf_rs_timer origin:upstream C error 3 45d 140d 0/3 upstream: reported C repro on 2023/12/10 10:27
upstream INFO: rcu detected stall in addrconf_rs_timer (5) kvm 4 733d 733d 0/26 auto-closed as invalid on 2022/06/24 22:41

Sample crash report:
watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [swapper/1:0]
Modules linked in:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.187-syzkaller-00057-g8a427269c016 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline]
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline]
RIP: 0010:kvm_wait+0xfc/0x150 arch/x86/kernel/kvm.c:926
Code: 38 f0 75 26 41 f7 c7 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d e5 46 d5 03 f4 eb 0e 0f 1f 44 00 00 0f 00 2d d6 46 d5 03 fb f4 <4c> 89 7c 24 18 ff 74 24 18 9d 48 c7 44 24 20 0e 36 e0 45 49 c7 04
RSP: 0018:ffffc900001701e0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff9200002e040 RCX: 1ffffffff0cd8ddf
RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffffc90000170220
RBP: ffffc90000170290 R08: dffffc0000000000 R09: ffffed103ee2ae4b
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881f7157254 R14: 0000000000000001 R15: 0000000000000246
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c001833000 CR3: 000000010c095000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 pv_wait arch/x86/include/asm/paravirt.h:564 [inline]
 pv_wait_node kernel/locking/qspinlock_paravirt.h:325 [inline]
 __pv_queued_spin_lock_slowpath+0x407/0xc70 kernel/locking/qspinlock.c:473
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [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:183 [inline]
 __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_lock+0x139/0x1b0 kernel/locking/spinlock.c:151
 spin_lock include/linux/spinlock.h:354 [inline]
 __dev_xmit_skb net/core/dev.c:3808 [inline]
 __dev_queue_xmit+0xbc0/0x28e0 net/core/dev.c:4147
 dev_queue_xmit+0x17/0x20 net/core/dev.c:4215
 neigh_connected_output+0x417/0x450 net/core/neighbour.c:1527
 neigh_output include/net/neighbour.h:517 [inline]
 ip6_finish_output2+0xf21/0x1850 net/ipv6/ip6_output.c:145
 __ip6_finish_output+0x658/0x820 net/ipv6/ip6_output.c:210
 ip6_finish_output+0x34/0x1e0 net/ipv6/ip6_output.c:220
 NF_HOOK_COND include/linux/netfilter.h:288 [inline]
 ip6_output+0x1f7/0x4d0 net/ipv6/ip6_output.c:243
 dst_output include/net/dst.h:437 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ndisc_send_skb+0x6e9/0xc00 net/ipv6/ndisc.c:508
 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:702
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3937
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1420
 expire_timers kernel/time/timer.c:1465 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1759
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1772
 __do_softirq+0x268/0x5bb kernel/softirq.c:309
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:405 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:49 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:89 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:114 [inline]
RIP: 0010:acpi_idle_do_entry drivers/acpi/processor_idle.c:575 [inline]
RIP: 0010:acpi_idle_enter+0x416/0x760 drivers/acpi/processor_idle.c:710
Code: 89 de 48 83 e6 08 31 ff e8 17 63 bb fc 48 83 e3 08 0f 85 b0 00 00 00 0f 1f 44 00 00 e8 c3 5e bb fc 0f 00 2d dc c9 b6 00 fb f4 <fa> e9 e1 00 00 00 49 83 c7 04 4c 89 f8 48 c1 e8 03 42 0f b6 04 30
RSP: 0018:ffffc90000107c30 EFLAGS: 000002d3
RAX: ffffffff84af2edd RBX: 0000000000000000 RCX: ffff888100292780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000107c70 R08: ffffffff84af2ec9 R09: ffffed10200524f1
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: ffff8881029b1004 R14: dffffc0000000000 R15: ffff8881061fb064
 cpuidle_enter_state+0x5e1/0x1550 drivers/cpuidle/cpuidle.c:249
 cpuidle_enter+0x5f/0xa0 drivers/cpuidle/cpuidle.c:364
 call_cpuidle kernel/sched/idle.c:160 [inline]
 cpuidle_idle_call kernel/sched/idle.c:241 [inline]
 do_idle+0x364/0x5c0 kernel/sched/idle.c:302
 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:398
 start_secondary+0x2e9/0x3a0 arch/x86/kernel/smpboot.c:265
 secondary_startup_64_no_verify+0xb1/0xbb
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 16738 Comm: syz-executor.4 Not tainted 5.10.187-syzkaller-00057-g8a427269c016 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline]
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline]
RIP: 0010:kvm_wait+0xfc/0x150 arch/x86/kernel/kvm.c:926
Code: 38 f0 75 26 41 f7 c7 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d e5 46 d5 03 f4 eb 0e 0f 1f 44 00 00 0f 00 2d d6 46 d5 03 fb f4 <4c> 89 7c 24 18 ff 74 24 18 9d 48 c7 44 24 20 0e 36 e0 45 49 c7 04
RSP: 0018:ffffc90001416b00 EFLAGS: 00000246
RAX: 0000000000000003 RBX: 1ffff92000282d64 RCX: ffffffff8150a984
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffffc90001416b40
RBP: ffffc90001416bb0 R08: dffffc0000000000 R09: ffffed102330b216
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881198590ac R14: 0000000000000003 R15: 0000000000000246
FS:  00007fe81bae86c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020114030 CR3: 000000010d69d000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 pv_wait arch/x86/include/asm/paravirt.h:564 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x72f/0xc70 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [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:183 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:359 [inline]
 get_dist_table+0x207/0x2e0 net/sched/sch_netem.c:798
 netem_change+0x974/0x1fb0 net/sched/sch_netem.c:988
 netem_init+0x5b/0xb0 net/sched/sch_netem.c:1075
 qdisc_create+0x879/0x12d0 net/sched/sch_api.c:1264
 tc_modify_qdisc+0x8a4/0x13f0
 rtnetlink_rcv_msg+0x955/0xc50 net/core/rtnetlink.c:5571
 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2496
 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:5589
 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
 netlink_unicast+0x8df/0xac0 net/netlink/af_netlink.c:1348
 netlink_sendmsg+0xa46/0xd00 net/netlink/af_netlink.c:1915
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg net/socket.c:672 [inline]
 ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2357
 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2411
 __sys_sendmsg net/socket.c:2440 [inline]
 __do_sys_sendmsg net/socket.c:2449 [inline]
 __se_sys_sendmsg+0x1b1/0x280 net/socket.c:2447
 __x64_sys_sendmsg+0x7b/0x90 net/socket.c:2447
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7fe81cd86ae9
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:00007fe81bae80c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fe81cea6050 RCX: 00007fe81cd86ae9
RDX: 0000000004000000 RSI: 00000000200007c0 RDI: 0000000000000003
RBP: 00007fe81cdd247a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fe81cea6050 R15: 00007ffd7531a008

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/07/31 01:32 android13-5.10-lts 8a427269c016 2a0d0f29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: soft lockup in addrconf_rs_timer
2023/07/12 23:59 android13-5.10-lts 59b65efafe20 979d5fe2 .config console log report info ci2-android-5-10 BUG: soft lockup in addrconf_rs_timer
* Struck through repros no longer work on HEAD.