linux-kernel - Re: [syzbot] [jffs2?] KASAN: slab-out-of-bounds Read in jffs2_sum_add

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Message-ID: <000000000000b4fe57061c6c6774@google.com>
Date: Thu, 04 Jul 2024 07:03:02 -0700
From: syzbot <syzbot+d7c218ea1def103f6bcd@...kaller.appspotmail.com>
To: brauner@...nel.org, chengzhihao1@...wei.com, dev@...cl.ru, 
	dwmw2@...radead.org, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org, richard@....at, 
	syzkaller-bugs@...glegroups.com, walmeida@...rosoft.com
Subject: Re: [syzbot] [jffs2?] KASAN: slab-out-of-bounds Read in jffs2_sum_add_kvec

syzbot suspects this issue was fixed by commit:

commit c6854e5a267c28300ff045480b5a7ee7f6f1d913
Author: Ilya Denisyev <dev@...cl.ru>
Date:   Fri Apr 12 15:53:54 2024 +0000

    jffs2: prevent xattr node from overflowing the eraseblock

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12204ae1980000
start commit:   fe46a7dd189e Merge tag 'sound-6.9-rc1' of git://git.kernel..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=aef2a55903e5791c
dashboard link: https://syzkaller.appspot.com/bug?extid=d7c218ea1def103f6bcd
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1309ca57180000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15f9afeb180000

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

#syz fix: jffs2: prevent xattr node from overflowing the eraseblock

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