linux-kernel - Re: [syzbot] [ntfs3?] KASAN: slab-use-after-free Read in chrdev

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Date: Fri, 26 Apr 2024 13:57:02 -0700
From: syzbot <syzbot+5d34cc6474499a5ff516@...kaller.appspotmail.com>
To: almaz.alexandrovich@...agon-software.com, 
	clang-built-linux@...glegroups.com, kari.argillander@...il.com, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	nathan@...nel.org, ndesaulniers@...gle.com, ntfs3@...ts.linux.dev, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [ntfs3?] KASAN: slab-use-after-free Read in chrdev_open

syzbot has bisected this issue to:

commit ef9297007e9904588682699e618c56401f61d1c2
Author: Kari Argillander <kari.argillander@...il.com>
Date:   Thu Sep 2 15:40:49 2021 +0000

    fs/ntfs3: Make binary search to search smaller chunks in beginning

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=144f18b0980000
start commit:   e33c4963bf53 Merge tag 'nfsd-6.9-5' of git://git.kernel.or..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=164f18b0980000
console output: https://syzkaller.appspot.com/x/log.txt?x=124f18b0980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=5a05c230e142f2bc
dashboard link: https://syzkaller.appspot.com/bug?extid=5d34cc6474499a5ff516
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11655ed8980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12499380980000

Reported-by: syzbot+5d34cc6474499a5ff516@...kaller.appspotmail.com
Fixes: ef9297007e99 ("fs/ntfs3: Make binary search to search smaller chunks in beginning")

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