syzbot


BUG: soft lockup in addrconf_rs_timer (3)

Status: auto-obsoleted due to no activity on 2024/01/05 16:48
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+521990714fbdf5ffce04@syzkaller.appspotmail.com
First crash: 225d, last: 156d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [net?] BUG: soft lockup in addrconf_rs_timer (3) 0 (1) 2023/07/25 16:22
Similar bugs (12)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 BUG: soft lockup in addrconf_rs_timer 1 125d 125d 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 215d 233d 0/2 auto-obsoleted due to no activity on 2023/10/29 01:38
linux-6.1 BUG: soft lockup in addrconf_rs_timer C done 26 262d 274d 3/3 fixed on 2023/07/30 15:47
linux-4.19 BUG: soft lockup in addrconf_rs_timer syz error 24 397d 1079d 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 434d 1637d 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 262d 274d 0/3 auto-obsoleted due to no activity on 2023/08/23 09:06
upstream BUG: soft lockup in addrconf_rs_timer net 18 1440d 1637d 0/26 auto-closed as invalid on 2020/07/20 22:25
upstream BUG: soft lockup in addrconf_rs_timer (2) net C 51 254d 275d 23/26 fixed on 2023/07/04 09:17
android-5-15 BUG: soft lockup in addrconf_rs_timer 1 223d 223d 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 852d 1306d 0/26 closed as invalid on 2022/02/08 10:39
upstream INFO: rcu detected stall in addrconf_rs_timer (5) kvm 4 676d 676d 0/26 auto-closed as invalid on 2022/06/24 22:41
linux-5.15 INFO: rcu detected stall in addrconf_rs_timer 1 83d 83d 0/3 upstream: reported on 2023/12/10 10:27
Last patch testing requests (3)
Created Duration User Patch Repo Result
2023/08/29 14:02 32m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci OK log
2023/07/25 15:49 19m edumazet@google.com patch git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2023/07/24 10:46 20m edumazet@google.com patch git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log

Sample crash report:
watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.1:16445]
Modules linked in:
irq event stamp: 5993
hardirqs last  enabled at (5992): [<ffff80008a44626c>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline]
hardirqs last  enabled at (5992): [<ffff80008a44626c>] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:94
hardirqs last disabled at (5993): [<ffff80008a443ea4>] __el1_irq arch/arm64/kernel/entry-common.c:470 [inline]
hardirqs last disabled at (5993): [<ffff80008a443ea4>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:488
softirqs last  enabled at (14): [<ffff800080034380>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (677): [<ffff80008002b660>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
CPU: 0 PID: 16445 Comm: syz-executor.1 Not tainted 6.4.0-rc7-syzkaller-ge40939bbfc68 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : find_entry_to_transmit+0x4e0/0x6d0
lr : find_entry_to_transmit+0x4c4/0x6d0
sp : ffff800080007000
x29: ffff8000800070c0 x28: ffff800080007230 x27: ffff0000e7bb1940
x26: ffff0000e7bb1800 x25: 0000000000000000 x24: 0000000000000080
x23: 04c978811b43be81 x22: 04c978811b43bec0 x21: 04c978811b43bf01
x20: dfff800000000000 x19: 7fffffffffffffff x18: ffff800096460080
x17: 0000000000000000 x16: ffff80008050b28c x15: 0000000000000100
x14: 1ffff00011bde0ac x13: ffffffff80000040 x12: 0000000080000040
x11: 0000000000000301 x10: 0000000000000100 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : ffff800080007210
x5 : ffff800080007230 x4 : 04c978809b43bf5d x3 : ffff80008898bde8
x2 : 0000000000000000 x1 : 7fffffffffffffff x0 : 04c978811b43bf01
Call trace:
 find_entry_to_transmit+0x4e0/0x6d0 net/sched/sch_taprio.c:382
 get_packet_txtime net/sched/sch_taprio.c:505 [inline]
 taprio_enqueue_one+0xdb0/0x146c net/sched/sch_taprio.c:574
 taprio_enqueue+0x328/0x544 net/sched/sch_taprio.c:655
 dev_qdisc_enqueue+0x60/0x35c net/core/dev.c:3773
 __dev_xmit_skb net/core/dev.c:3862 [inline]
 __dev_queue_xmit+0xb24/0x3318 net/core/dev.c:4210
 dev_queue_xmit include/linux/netdevice.h:3088 [inline]
 neigh_resolve_output+0x518/0x618 net/core/neighbour.c:1552
 neigh_output include/net/neighbour.h:544 [inline]
 ip6_finish_output2+0xd60/0x1a1c net/ipv6/ip6_output.c:134
 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
 ip6_finish_output+0x538/0x8c8 net/ipv6/ip6_output.c:206
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip6_output+0x270/0x594 net/ipv6/ip6_output.c:227
 dst_output include/net/dst.h:458 [inline]
 NF_HOOK include/linux/netfilter.h:303 [inline]
 ndisc_send_skb+0xc30/0x1790 net/ipv6/ndisc.c:508
 ndisc_send_rs+0x47c/0x5d4 net/ipv6/ndisc.c:718
 addrconf_rs_timer+0x300/0x58c net/ipv6/addrconf.c:3936
 call_timer_fn+0x19c/0x8cc kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x55c/0x734 kernel/time/timer.c:2022
 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:2035
 __do_softirq+0x2d0/0xd54 kernel/softirq.c:571
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:882
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0x28c/0x534 kernel/softirq.c:650
 irq_exit_rcu+0x14/0x84 kernel/softirq.c:662
 __el1_irq arch/arm64/kernel/entry-common.c:474 [inline]
 el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:488
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:493
 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:587
 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:33 [inline]
 arch_local_irq_enable arch/arm64/include/asm/irqflags.h:55 [inline]
 lookup_bh_lru fs/buffer.c:1340 [inline]
 __find_get_block+0x1a4/0xe8c fs/buffer.c:1352
 __getblk_gfp+0x48/0xa50 fs/buffer.c:1378
 sb_getblk include/linux/buffer_head.h:365 [inline]
 __ext4_get_inode_loc+0x3b4/0xb90 fs/ext4/inode.c:4376
 ext4_get_inode_loc fs/ext4/inode.c:4504 [inline]
 ext4_reserve_inode_write+0x130/0x2e0 fs/ext4/inode.c:5734
 __ext4_mark_inode_dirty+0x1c4/0x848 fs/ext4/inode.c:5911
 ext4_ext_tree_init+0xc0/0x184 fs/ext4/extents.c:879
 __ext4_new_inode+0x2ce0/0x39fc fs/ext4/ialloc.c:1335
 ext4_symlink+0x328/0x9a0 fs/ext4/namei.c:3393
 vfs_symlink+0x138/0x260 fs/namei.c:4475
 do_symlinkat+0x364/0x6b0 fs/namei.c:4501
 __do_sys_symlinkat fs/namei.c:4517 [inline]
 __se_sys_symlinkat fs/namei.c:4514 [inline]
 __arm64_sys_symlinkat+0xa4/0xbc fs/namei.c:4514
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x244 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191
 el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591

Crashes (8):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/07/23 16:33 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e40939bbfc68 27cbe77f .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: soft lockup in addrconf_rs_timer
2023/09/27 16:47 bpf 81335f90e8a8 2895a507 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce BUG: soft lockup in addrconf_rs_timer
2023/09/11 02:21 bpf 7182e56411b9 6654cf89 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce BUG: soft lockup in addrconf_rs_timer
2023/09/11 14:06 bpf-next ebc8484d0e6d 59da8366 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce BUG: soft lockup in addrconf_rs_timer
2023/07/26 17:27 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e40939bbfc68 41fe1bae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: soft lockup in addrconf_rs_timer
2023/07/23 21:49 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e40939bbfc68 27cbe77f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: soft lockup in addrconf_rs_timer
2023/07/23 13:23 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e40939bbfc68 27cbe77f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: soft lockup in addrconf_rs_timer
2023/07/21 01:33 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e40939bbfc68 28847498 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: soft lockup in addrconf_rs_timer
* Struck through repros no longer work on HEAD.