syzbot


KASAN: slab-out-of-bounds Write in end_requests

Status: fixed on 2019/11/11 16:48
Subsystems: fuse
[Documentation on labels]
Reported-by: syzbot+cd4b9b3648c78dbd7fca@syzkaller.appspotmail.com
Fix commit: 45ff350bbd9d fuse: fix unlocked access to processing queue
First crash: 2177d, last: 2171d
Fix bisection: fixed by (bisect log) :
commit 45ff350bbd9d0f0977ff270a0d427c71520c0c37
Author: Miklos Szeredi <mszeredi@redhat.com>
Date: Thu Jul 26 14:13:11 2018 +0000

  fuse: fix unlocked access to processing queue

  
Discussions (3)
Title Replies (including bot) Last reply
KASAN: slab-out-of-bounds Write in end_requests 0 (2) 2019/11/07 13:42
Reminder: 5 open syzbot bugs in "fs/fuse" subsystem 1 (1) 2019/07/24 02:32
Reminder: 5 open syzbot bugs in "fs/fuse" subsystem 1 (1) 2019/07/02 05:26

Sample crash report:
==================================================================
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

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/07/28 21:10 upstream dd63bf22fccd ebf656d7 .config console log report syz C ci-upstream-kasan-gce
2018/08/03 20:52 upstream 0585df468e8f cc4f6d0a .config console log report ci-upstream-kasan-gce
* Struck through repros no longer work on HEAD.