linux-kernel - Re: INFO: task hung in locks_remove

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Message-ID: <9a337dfa-175f-e13b-1977-0f63d589f37c@I-love.SAKURA.ne.jp>
Date:   Thu, 21 May 2020 23:09:13 +0900
From:   Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:     syzbot <syzbot+f5bc30abd8916982419c@...kaller.appspotmail.com>,
        syzkaller-bugs@...glegroups.com
Cc:     linux-kernel@...r.kernel.org
Subject: Re: INFO: task hung in locks_remove_posix

On 2020/05/21 5:53, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    806d8acc USB: dummy-hcd: use configurable endpoint naming ..
> git tree:       https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.txt?x=16c9ece2100000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=d800e9bad158025f
> dashboard link: https://syzkaller.appspot.com/bug?extid=f5bc30abd8916982419c
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> 
> Unfortunately, I don't have any reproducer for this crash yet.

This seems to be a mislabeling due to '?' in all lines in a trace.

#syz dup: INFO: task hung in wdm_flush