linux-kernel - Re: [syzbot] KASAN: null-ptr-deref Read in filp

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Message-ID: <0000000000009584d605c715ac7e@google.com>
Date:   Wed, 14 Jul 2021 06:53:07 -0700
From:   syzbot <syzbot+283ce5a46486d6acdbaf@...kaller.appspotmail.com>
To:     Christian Brauner <christian.brauner@...ntu.com>
Cc:     brauner@...nel.org, christian.brauner@...ntu.com,
        dvyukov@...gle.com, gregkh@...uxfoundation.org,
        gscrivan@...hat.com, hch@....de, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable-commits@...r.kernel.org,
        stable@...r.kernel.org, syzkaller-bugs@...glegroups.com,
        torvalds@...ux-foundation.org, viro@...iv.linux.org.uk
Subject: Re: [syzbot] KASAN: null-ptr-deref Read in filp_close (2)

> On Mon, Jul 12, 2021 at 09:12:20PM -0700, syzbot wrote:
>> syzbot has found a reproducer for the following issue on:
>> 
>> HEAD commit:    7fef2edf sd: don't mess with SD_MINORS for CONFIG_DEBUG_BL..
>> git tree:       upstream
>> console output: https://syzkaller.appspot.com/x/log.txt?x=178919b0300000
>> kernel config:  https://syzkaller.appspot.com/x/.config?x=20276914ec6ad813
>> dashboard link: https://syzkaller.appspot.com/bug?extid=283ce5a46486d6acdbaf
>> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=120220f2300000
>> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=115f37b4300000
>> 
>> IMPORTANT: if you fix the issue, please add the following tag to the commit:
>> Reported-by: syzbot+283ce5a46486d6acdbaf@...kaller.appspotmail.com
>
> #syz test: https://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux.git/ syzbot+283ce5a46486d6acdbaf 

"syzbot+283ce5a46486d6acdbaf" does not look like a valid git branch or commit.