linux-kernel - KASAN: slab-out-of-bounds Write in end

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <000000000000d0429205723824d8@google.com>
Date:   Mon, 30 Jul 2018 07:19:04 -0700
From:   syzbot <syzbot+cd4b9b3648c78dbd7fca@...kaller.appspotmail.com>
To:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        miklos@...redi.hu, syzkaller-bugs@...glegroups.com
Subject: KASAN: slab-out-of-bounds Write in end_requests

Hello,

syzbot found the following crash on:

HEAD commit:    dd63bf22fccd Merge branch 'i2c/for-current' of git://git.k..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10b9c770400000
kernel config:  https://syzkaller.appspot.com/x/.config?x=ffb4428fdc82f93b
dashboard link: https://syzkaller.appspot.com/bug?extid=cd4b9b3648c78dbd7fca
compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=11b9732c400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16c469a4400000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+cd4b9b3648c78dbd7fca@...kaller.appspotmail.com

==================================================================
BUG: KASAN: slab-out-of-bounds in end_requests+0x37b/0x460  
fs/fuse/dev.c:2042
Write of size 4 at addr ffff8801c71b2fe4 by task syz-executor467/7211

CPU: 0 PID: 7211 Comm: syz-executor467 Not tainted 4.18.0-rc6+ #166
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
  ? dump_stack_print_info.cold.2

---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@...glegroups.com.

syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with  
syzbot.
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches