linux-kernel - Re: [syzbot] general protection fault in __pm_runtime

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Date:   Sun, 13 Mar 2022 20:27:55 +0300
From:   Pavel Skripkin <paskripkin@...il.com>
To:     syzbot <syzbot+b9bd12fbed3485a3e51f@...kaller.appspotmail.com>,
        gregkh@...uxfoundation.org, len.brown@...el.com,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        pavel@....cz, rafael@...nel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] general protection fault in __pm_runtime_resume (2)

On 3/13/22 08:35, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    92f90cc9fe0e Merge tag 'fuse-fixes-5.17-rc8' of git://git...
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=118cd3be700000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=442f8ac61e60a75e
> dashboard link: https://syzkaller.appspot.com/bug?extid=b9bd12fbed3485a3e51f
> compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15b64e79700000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1652811a700000
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+b9bd12fbed3485a3e51f@...kaller.appspotmail.com
> 

hu->serdev should be checked before passing to pm functions

#syz test:
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git





With regards,
Pavel Skripkin
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