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

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: 2342d, last: 2336d

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.