syzbot


KASAN: slab-out-of-bounds Read in vc_do_resize
Status: fixed on 2020/09/16 22:51
Reported-by: syzbot+c37a14770d51a085a520@syzkaller.appspotmail.com
Fix commit: d88ca7e1a27e fbmem: pull fbcon_update_vcs() out of fb_set_var()
First crash: 718d, last: 483d

Cause bisection: introduced by (bisect log) :
commit 9e1467002630065ed86c65ea28bfc9194fff6f0e
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue May 28 09:02:59 2019 +0000

  fbcon: replace FB_EVENT_MODE_CHANGE/_ALL with direct calls

Crash: KASAN: slab-out-of-bounds Read in vc_do_resize (log)
Repro: C syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2020/07/29 10:59 17m penguin-kernel@i-love.sakura.ne.jp patch upstream OK
2020/07/28 22:04 12m penguin-kernel@i-love.sakura.ne.jp upstream report log
2020/07/28 14:59 18m penguin-kernel@i-love.sakura.ne.jp patch upstream OK
2020/07/28 12:12 16m penguin-kernel@i-love.sakura.ne.jp patch upstream OK
2020/07/28 06:56 16m penguin-kernel@i-love.sakura.ne.jp patch upstream OK
2020/07/27 22:52 16m penguin-kernel@i-love.sakura.ne.jp patch upstream OK
2020/07/27 13:11 16m penguin-kernel@i-love.sakura.ne.jp patch upstream OK
2020/07/27 04:36 12m penguin-kernel@i-love.sakura.ne.jp patch upstream report log
2020/07/26 14:45 12m penguin-kernel@i-love.sakura.ne.jp patch upstream report log
2020/07/26 13:09 11m penguin-kernel@i-love.sakura.ne.jp patch upstream report log
2020/07/26 10:45 17m penguin-kernel@i-love.sakura.ne.jp patch upstream report log

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2020/06/01 03:45 upstream 3d77e6a8804a 8eda0b95 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/03/30 00:56 upstream 7111951b8d49 8eda0b95 .config log report syz C
Crashes (55):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2020/01/22 15:50 upstream d96d875ef5dd 8eda0b95 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/07/30 17:37 upstream d3590ebf6f91 233283a1 .config log report syz
ci-upstream-kasan-gce-smack-root 2020/07/28 09:51 upstream 92ed30191993 cb93dc6a .config log report syz
ci-upstream-kasan-gce 2020/07/28 04:47 upstream 92ed30191993 cb93dc6a .config log report syz
ci-upstream-kasan-gce-root 2020/01/23 22:22 upstream 131701c697e8 3334d684 .config log report syz
ci-upstream-kasan-gce 2020/01/22 02:45 upstream d96d875ef5dd 8eda0b95 .config log report syz
ci-upstream-kasan-gce-386 2020/07/28 05:35 upstream 92ed30191993 cb93dc6a .config log report syz
ci-upstream-kasan-gce-smack-root 2020/08/10 15:19 upstream 9420f1ce0186 70301872 .config log report
ci-upstream-kasan-gce-smack-root 2020/08/10 09:35 upstream 9420f1ce0186 70301872 .config log report
ci-upstream-kasan-gce-smack-root 2020/08/07 15:41 upstream d6efb3ac3e6c cb436c69 .config log report
ci-upstream-kasan-gce-root 2020/08/06 08:01 upstream fffe3ae0ee84 0487ea6f .config log report
ci-upstream-kasan-gce-smack-root 2020/08/04 20:30 upstream c0842fbc1b18 80a06902 .config log report
ci-upstream-kasan-gce-selinux-root 2020/08/03 23:45 upstream bcf876870b95 196277c4 .config log report
ci-upstream-kasan-gce-smack-root 2020/08/01 12:32 upstream 7dc6fd0f3b84 d895b3be .config log report
ci-upstream-kasan-gce 2020/07/30 12:07 upstream d3590ebf6f91 233283a1 .config log report
ci-upstream-kasan-gce-smack-root 2020/07/30 05:27 upstream d3590ebf6f91 233283a1 .config log report
ci-upstream-kasan-gce 2020/07/29 07:44 upstream 6ba1b005ffc3 cb93dc6a .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/28 13:20 upstream 92ed30191993 cb93dc6a .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/28 10:19 upstream 92ed30191993 cb93dc6a .config log report
ci-upstream-kasan-gce-smack-root 2020/07/28 06:27 upstream 92ed30191993 cb93dc6a .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/27 18:28 upstream 92ed30191993 cb93dc6a .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/20 17:49 upstream 5714ee50bb43 4285ffa3 .config log report
ci-upstream-kasan-gce 2020/07/19 18:01 upstream f932d58abc38 9c812472 .config log report
ci-upstream-kasan-gce 2020/07/19 16:46 upstream f932d58abc38 9c812472 .config log report
ci-upstream-kasan-gce-smack-root 2020/07/11 20:16 upstream a581387e415b 18d18b59 .config log report
ci-upstream-kasan-gce-root 2020/07/11 19:16 upstream a581387e415b 18d18b59 .config log report
ci-upstream-kasan-gce-smack-root 2020/07/09 12:43 upstream 0bddd227f3dc bc238812 .config log report
ci-upstream-kasan-gce-root 2020/07/07 20:34 upstream 7cc2a8ea1048 51095195 .config log report
ci-upstream-kasan-gce-root 2020/07/07 20:14 upstream 7cc2a8ea1048 51095195 .config log report
ci-upstream-kasan-gce-root 2020/07/07 17:57 upstream 7cc2a8ea1048 51095195 .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/06 19:21 upstream 7cc2a8ea1048 51095195 .config log report
ci-upstream-kasan-gce-smack-root 2020/07/05 08:41 upstream 7cc2a8ea1048 51095195 .config log report
ci-upstream-kasan-gce-smack-root 2020/07/01 04:24 upstream 9ebcfadb0610 917afeaa .config log report
ci-upstream-kasan-gce-root 2020/06/21 07:07 upstream 7ae77150d94d c655ec77 .config log report
ci-upstream-kasan-gce-selinux-root 2020/06/08 07:04 upstream 7ae77150d94d 7751efd0 .config log report
ci-upstream-kasan-gce-smack-root 2020/06/05 11:12 upstream 435faf5c218a 2420d1bc .config log report
ci-upstream-kasan-gce-smack-root 2020/05/02 03:15 upstream 052c467cb587 bc734e7a .config log report
ci-upstream-kasan-gce-smack-root 2020/05/01 12:29 upstream c45e8bccecaf a4d01b80 .config log report
ci-upstream-kasan-gce-smack-root 2020/04/26 10:26 upstream b2768df24ec4 99b258dd .config log report
ci-upstream-kasan-gce-selinux-root 2020/04/24 23:45 upstream b4f633221f0a 03d97a1b .config log report
ci-upstream-kasan-gce-smack-root 2020/04/24 03:35 upstream c578ddb39e56 2e44d63e .config log report
ci-upstream-kasan-gce-smack-root 2020/04/24 00:57 upstream c578ddb39e56 2e44d63e .config log report
ci-upstream-kasan-gce-smack-root 2020/02/28 19:06 upstream f8788d86ab28 59b57593 .config log report
ci-upstream-kasan-gce-smack-root 2020/02/25 22:59 upstream f8788d86ab28 59b57593 .config log report
ci-upstream-kasan-gce-selinux-root 2020/02/18 22:38 upstream b1da3acc781c 012fbc32 .config log report
ci-upstream-kasan-gce-smack-root 2020/02/13 22:32 upstream 0bf999f9c5e7 c5ed587f .config log report
ci-upstream-kasan-gce-selinux-root 2020/02/12 12:07 upstream 359c92c02bfa a75b198c .config log report
ci-upstream-kasan-gce-smack-root 2020/02/11 14:07 upstream 0a679e13ea30 084454ae .config log report
ci-upstream-kasan-gce-smack-root 2020/01/24 23:30 upstream 6381b442836e 2e95ab33 .config log report
ci-upstream-kasan-gce 2020/01/22 01:50 upstream d96d875ef5dd 8eda0b95 .config log report
ci-upstream-kasan-gce 2019/12/19 08:00 upstream 2187f215ebaa 79b211f7 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/08/02 01:14 linux-next 01830e6c042e d895b3be .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/27 04:24 linux-next 26027945c94a 51265195 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/01 22:45 linux-next aab2003999e7 39acb39d .config log report