linux-kernel - Re: [syzbot] [xfs?] UBSAN: array-index-out-of-bounds in xfs_attr3_leaf_add

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Date:   Sat, 30 Sep 2023 10:57:28 -0700
From:   syzbot <syzbot+510dcbdc6befa1e6b2f6@...kaller.appspotmail.com>
To:     chandan.babu@...cle.com, david@...morbit.com, djwong@...nel.org,
        ebiggers@...nel.org, hch@....de, keescook@...omium.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-xfs@...r.kernel.org, mukattreyee@...il.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [xfs?] UBSAN: array-index-out-of-bounds in xfs_attr3_leaf_add_work

syzbot suspects this issue was fixed by commit:

commit a49bbce58ea90b14d4cb1d00681023a8606955f2
Author: Darrick J. Wong <djwong@...nel.org>
Date:   Mon Jul 10 16:12:20 2023 +0000

    xfs: convert flex-array declarations in xfs attr leaf blocks

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12eef28a680000
start commit:   f8566aa4f176 Merge tag 'x86-urgent-2023-07-01' of git://gi..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=3f27fb02fc20d955
dashboard link: https://syzkaller.appspot.com/bug?extid=510dcbdc6befa1e6b2f6
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1652938f280000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14c10c40a80000

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

#syz fix: xfs: convert flex-array declarations in xfs attr leaf blocks

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