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[v5.15] INFO: task hung in pnet_find_base_ndev
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Jun 20, 2024, 7:41:30 AM
Jun 20
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Hello,
syzbot found the following issue on:
HEAD commit: 4878aadf2d15 Linux 5.15.161
git tree: linux-5.15.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=12f1c1b6980000
kernel config:
https://syzkaller.appspot.com/x/.config?x=875d98826c53bf16
dashboard link:
https://syzkaller.appspot.com/bug?extid=ddd96a2d283280a078d0
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image:
https://storage.googleapis.com/syzbot-assets/f227a150ea92/disk-4878aadf.raw.xz
vmlinux:
https://storage.googleapis.com/syzbot-assets/6cfc50bf8b4e/vmlinux-4878aadf.xz
kernel image:
https://storage.googleapis.com/syzbot-assets/23f7adc3c761/bzImage-4878aadf.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+ddd96a...@syzkaller.appspotmail.com
INFO: task syz-executor.3:3684 blocked for more than 143 seconds.
Not tainted 5.15.161-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25040 pid: 3684 ppid: 3529 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6518
__mutex_lock_common+0xe34/0x25a0 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
pnet_find_base_ndev+0x6f/0x200 net/smc/smc_pnet.c:935
smc_pnet_add_eth net/smc/smc_pnet.c:357 [inline]
smc_pnet_enter net/smc/smc_pnet.c:492 [inline]
smc_pnet_add+0x41b/0x12b0 net/smc/smc_pnet.c:555
---
This report is generated by a bot. It may contain errors.
See
https://goo.gl/tpsmEJ
for more information about syzbot.
syzbot engineers can be reached at
syzk...@googlegroups.com
.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status
for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
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