linux-kernel - Re: [syzbot] [ext4?] KASAN: slab-use-after-free Read in ext4_convert_inline_data

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Message-ID: <0000000000009e002e06104da983@google.com>
Date: Thu, 01 Feb 2024 00:20:04 -0800
From: syzbot <syzbot+db6caad9ebd2c8022b41@...kaller.appspotmail.com>
To: adilger.kernel@...ger.ca, axboe@...nel.dk, brauner@...nel.org, 
	jack@...e.cz, linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, nogikh@...gle.com, 
	syzkaller-bugs@...glegroups.com, tytso@....edu
Subject: Re: [syzbot] [ext4?] KASAN: slab-use-after-free Read in ext4_convert_inline_data_nolock

syzbot suspects this issue was fixed by commit:

commit 6f861765464f43a71462d52026fbddfc858239a5
Author: Jan Kara <jack@...e.cz>
Date:   Wed Nov 1 17:43:10 2023 +0000

    fs: Block writes to mounted block devices

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1606d4ffe80000
start commit:   3a93e40326c8 Merge tag 'for-linus' of git://git.kernel.org..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=9c35b3803e5ad668
dashboard link: https://syzkaller.appspot.com/bug?extid=db6caad9ebd2c8022b41
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11a2cd05c80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=158e1f29c80000

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

#syz fix: fs: Block writes to mounted block devices

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