syzbot


BUG: soft lockup in tx

Status: auto-obsoleted due to no activity on 2024/03/27 03:04
Reported-by: syzbot+c42867a2a4f8909349ca@syzkaller.appspotmail.com
First crash: 434d, last: 182d
Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 BUG: soft lockup in tx (2) 1 136d 136d 0/3 auto-obsoleted due to no activity on 2024/05/12 18:08
upstream BUG: soft lockup in tx serial C 66 44d 638d 0/27 upstream: reported C repro on 2022/09/18 05:29
linux-4.14 BUG: soft lockup in tx C error 2 803d 982d 0/1 upstream: reported C repro on 2021/10/09 08:02
linux-4.19 BUG: soft lockup in tx C done 1 1018d 1048d 1/1 fixed on 2021/10/04 07:44
linux-6.1 BUG: soft lockup in tx 3 297d 420d 0/3 auto-obsoleted due to no activity on 2023/12/03 12:31
linux-5.15 INFO: rcu detected stall in tx 1 66d 66d 0/3 upstream: reported on 2024/04/12 14:07
upstream INFO: rcu detected stall in tx net C error unreliable 3 1017d 1155d 20/27 fixed on 2021/11/10 00:50
upstream INFO: rcu detected stall in tx (2) serial 79 783d 902d 0/27 auto-closed as invalid on 2022/08/24 07:21

Sample crash report:
watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [aoe_tx0:2046]
Modules linked in:
irq event stamp: 19687757
hardirqs last  enabled at (19687756): [<ffff800011a49210>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
hardirqs last  enabled at (19687756): [<ffff800011a49210>] _raw_spin_unlock_irqrestore+0xac/0x158 kernel/locking/spinlock.c:194
hardirqs last disabled at (19687757): [<ffff800011971c78>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (8042): [<ffff80000fda95c8>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31
softirqs last disabled at (8046): [<ffff80000fda9594>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18
CPU: 0 PID: 2046 Comm: aoe_tx0 Not tainted 5.15.139-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
pc : _raw_spin_unlock_irqrestore+0xbc/0x158 kernel/locking/spinlock.c:194
lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
lr : _raw_spin_unlock_irqrestore+0xac/0x158 kernel/locking/spinlock.c:194
sp : ffff800022737800
x29: ffff800022737810 x28: ffff0000fa8bde30 x27: ffff0000fa8bddc0
x26: ffff0000dbf8aca8 x25: ffff0000c9e97018 x24: 0000000000000000
x23: dfff800000000000 x22: ffff80000b44aea8 x21: ffff80001874fc20
x20: ffff80001874fc08 x19: 0000000000000000 x18: ffff800022737520
x17: ff8080000fda2ccc x16: ffff8000082eb650 x15: ffff80000fda2ccc
x14: 1ffff0000292406a x13: ffffffffffffffff x12: 0000000000000000
x11: ff8080000a9acc84 x10: 0000000000000003 x9 : 0000000000000080
x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff800008045860
x2 : 0000000000000002 x1 : ffff800011acab40 x0 : ffff80019ff83000
Call trace:
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline]
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
 _raw_spin_unlock_irqrestore+0xbc/0x158 kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
 uart_write_room+0x168/0x300 drivers/tty/serial/serial_core.c:603
 tty_write_room+0x6c/0x8c drivers/tty/tty_ioctl.c:79
 handle_tx+0x124/0x644 drivers/net/caif/caif_serial.c:226
 caif_xmit+0x10c/0x160 drivers/net/caif/caif_serial.c:282
 __netdev_start_xmit include/linux/netdevice.h:5019 [inline]
 netdev_start_xmit include/linux/netdevice.h:5033 [inline]
 xmit_one net/core/dev.c:3614 [inline]
 dev_hard_start_xmit+0x2bc/0x92c net/core/dev.c:3630
 __dev_queue_xmit+0x13a8/0x2a6c net/core/dev.c:4245
 dev_queue_xmit+0x24/0x34 net/core/dev.c:4278
 tx+0x8c/0x130 drivers/block/aoe/aoenet.c:63
 kthread+0x1ac/0x374 drivers/block/aoe/aoecmd.c:1230
 kthread+0x37c/0x45c kernel/kthread.c:319
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870

Crashes (21):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/11/22 16:29 linux-5.15.y 2a910f4af54d 03e12510 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in tx
2023/10/31 16:16 linux-5.15.y 12952a23a5da 58499c95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in tx
2023/09/17 23:59 linux-5.15.y aff03380bda4 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in tx
2023/08/21 19:21 linux-5.15.y f6f7927ac664 6b415825 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in tx
2023/07/28 05:26 linux-5.15.y 09996673e313 92476829 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in tx
2023/05/28 21:02 linux-5.15.y 1fe619a7d252 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in tx
2023/04/20 10:37 linux-5.15.y 4fdad925aa1a a219f34e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in tx
2023/04/19 16:09 linux-5.15.y 4fdad925aa1a 94b4184e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in tx
2023/04/11 06:06 linux-5.15.y d86dfc4d95cd 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in tx
2023/04/10 10:34 linux-5.15.y d86dfc4d95cd 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in tx
2023/04/10 07:10 linux-5.15.y d86dfc4d95cd 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in tx
2023/12/18 03:03 linux-5.15.y d0fc081c6241 3222d10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in tx
2023/11/06 15:12 linux-5.15.y 12952a23a5da 78fae24e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in tx
2023/10/20 08:10 linux-5.15.y 00c03985402e a42250d2 .config console log report info ci2-linux-5-15-kasan INFO: rcu detected stall in tx
2023/10/13 03:45 linux-5.15.y 02e21884dcf2 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in tx
2023/10/03 05:46 linux-5.15.y b911329317b4 65faba36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in tx
2023/09/19 19:01 linux-5.15.y 35ecaa3632bf 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in tx
2023/08/24 19:40 linux-5.15.y f6f7927ac664 49be837e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in tx
2023/08/07 17:54 linux-5.15.y 38d4ca22a528 b1b6ae3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in tx
2023/08/02 20:25 linux-5.15.y 09996673e313 b178af49 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in tx
2023/07/28 05:31 linux-5.15.y 09996673e313 92476829 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in tx
* Struck through repros no longer work on HEAD.