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BUG: soft lockup in tx (2)

Status: upstream: reported on 2024/02/02 18:08
Reported-by: syzbot+f22967866b403254bdaa@syzkaller.appspotmail.com
First crash: 85d, last: 85d
▶ ▼ Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: soft lockup in tx serial C 63 2d11h 587d 0/26 upstream: reported C repro on 2022/09/18 05:29
linux-4.14 BUG: soft lockup in tx C error 2 752d 931d 0/1 upstream: reported C repro on 2021/10/09 08:02
linux-4.19 BUG: soft lockup in tx C done 1 967d 997d 1/1 fixed on 2021/10/04 07:44
linux-6.1 BUG: soft lockup in tx 3 246d 369d 0/3 auto-obsoleted due to no activity on 2023/12/03 12:31
linux-5.15 BUG: soft lockup in tx 21 131d 383d 0/3 auto-obsoleted due to no activity on 2024/03/27 03:04
linux-5.15 INFO: rcu detected stall in tx 1 15d 15d 0/3 upstream: reported on 2024/04/12 14:07
upstream INFO: rcu detected stall in tx net C error unreliable 3 966d 1104d 20/26 fixed on 2021/11/10 00:50
upstream INFO: rcu detected stall in tx (2) serial 79 732d 851d 0/26 auto-closed as invalid on 2022/08/24 07:21

Sample crash report:
watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [aoe_tx0:2050]
Modules linked in:
irq event stamp: 32380253
hardirqs last  enabled at (32380252): [<ffff80001222e8a4>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (32380252): [<ffff80001222e8a4>] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194
hardirqs last disabled at (32380253): [<ffff80001214a7f4>] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline]
hardirqs last disabled at (32380253): [<ffff80001214a7f4>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486
softirqs last  enabled at (6242): [<ffff800010430634>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (6246): [<ffff800010430600>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
CPU: 0 PID: 2050 Comm: aoe_tx0 Not tainted 6.1.76-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
pc : _raw_spin_unlock_irqrestore+0x58/0xac kernel/locking/spinlock.c:194
lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
lr : _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194
sp : ffff800023d477d0
x29: ffff800023d477d0 x28: 1fffe000231068c0 x27: ffff0000cd9b0c30
x26: ffff000118834600 x25: ffff0000cd9b0fd0 x24: ffff0000cc7a10b0
x23: 0000000000000020 x22: 0000000000000002 x21: 0000000000000000
x20: ffff800019c15ed0 x19: 0000000000000000 x18: ffff800023d47500
x17: ffff8000188c8000 x16: ffff800008304a58 x15: ffff8000183adf80
x14: 1ffff00002b080b0 x13: dfff800000000000 x12: 0000000000000003
x11: 0000000000ff0100 x10: 0000000000000003 x9 : 0000000000000080
x8 : 00000000000000c0 x7 : ffff80000b64eb3c x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff8000122ac560 x0 : ffff80019ebcc000
Call trace:
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline]
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
 _raw_spin_unlock_irqrestore+0x58/0xac kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
 uart_write+0x358/0x878 drivers/tty/serial/serial_core.c:582
 handle_tx+0x1f4/0x5f8 drivers/net/caif/caif_serial.c:236
 caif_xmit+0x108/0x150 drivers/net/caif/caif_serial.c:282
 __netdev_start_xmit include/linux/netdevice.h:4853 [inline]
 netdev_start_xmit include/linux/netdevice.h:4867 [inline]
 xmit_one net/core/dev.c:3627 [inline]
 dev_hard_start_xmit+0x25c/0x9a4 net/core/dev.c:3643
 __dev_queue_xmit+0x186c/0x38d8 net/core/dev.c:4293
 dev_queue_xmit include/linux/netdevice.h:3021 [inline]
 tx+0x90/0x134 drivers/block/aoe/aoenet.c:63
 kthread+0x1ac/0x374 drivers/block/aoe/aoecmd.c:1229
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/02/02 18:07 linux-6.1.y e5c3b988b827 60bf9982 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: soft lockup in tx
* Struck through repros no longer work on HEAD.