linux-kernel - Re: [syzbot] kernel BUG in ext4_ind_remove

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Message-ID: <000000000000195e9205de96e067@google.com>
Date:   Mon, 09 May 2022 09:41:09 -0700
From:   syzbot <syzbot+fcc629d1a1ae8d3fe8a5@...kaller.appspotmail.com>
To:     adilger.kernel@...ger.ca, jack@...e.cz, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com,
        tadeusz.struk@...aro.org, tytso@....edu
Subject: Re: [syzbot] kernel BUG in ext4_ind_remove_space

syzbot suspects this issue was fixed by commit:

commit 2da376228a2427501feb9d15815a45dbdbdd753e
Author: Tadeusz Struk <tadeusz.struk@...aro.org>
Date:   Thu Mar 31 20:05:15 2022 +0000

    ext4: limit length to bitmap_maxbytes - blocksize in punch_hole

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=100ac712f00000
start commit:   09688c0166e7 Linux 5.17-rc8
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=d35f9bc6884af6c9
dashboard link: https://syzkaller.appspot.com/bug?extid=fcc629d1a1ae8d3fe8a5
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1205b189700000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15dda4fe700000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: ext4: limit length to bitmap_maxbytes - blocksize in punch_hole

For information about bisection process see: https://goo.gl/tpsmEJ#bisection