syzbot


KASAN: use-after-free Read in lbmIODone
Status: upstream: reported syz repro on 2020/09/21 09:24
Reported-by: syzbot+5d2008bd1f1b722ba94e@syzkaller.appspotmail.com
First crash: 402d, last: 65d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: KASAN: use-after-free Read in blk_update_request (log)
Repro: syz .config

Fix bisection: fixed by (bisect log) [merge commit]:
commit 27151f177827d478508e756c7657273261aaf8a9
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sun Sep 5 18:56:18 2021 +0000

  Merge tag 'perf-tools-for-v5.15-2021-09-04' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 KASAN: use-after-free Read in lbmIODone C 65 8d09h 371d 0/1 upstream: reported C repro on 2020/10/22 09:37
linux-4.14 KASAN: use-after-free Read in lbmIODone C 39 19d 400d 0/1 upstream: reported C repro on 2020/09/23 00:55
Patch testing requests:
Created Duration User Patch Repo Result
2021/04/03 03:53 17m mail@anirudhrb.com git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git d98f554b318f57ded14684c04b3337a1975cf490 OK
2021/04/02 20:54 16m mail@anirudhrb.com patch git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git d98f554b318f57ded14684c04b3337a1975cf490 OK
2021/03/14 17:54 15m mail@anirudhrb.com patch linux-next OK
2021/03/14 11:10 15m mail@anirudhrb.com patch linux-next OK
2021/03/13 10:01 11m mail@anirudhrb.com patch linux-next report log
2021/03/12 06:54 16m mail@anirudhrb.com linux-next report log
2021/03/11 17:02 16m mail@anirudhrb.com upstream report log

Sample crash report:

Crashes (19):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/02/16 13:54 upstream f40ddce88593 98682e5e .config log report syz KASAN: use-after-free Read in lbmIODone
ci-upstream-kasan-gce-smack-root 2021/07/24 18:36 upstream f0fddcec6b62 4d1b57d4 .config log report info KASAN: use-after-free Read in lbmIODone
ci-upstream-kasan-gce-root 2021/06/26 07:14 upstream b7050b242430 9d2ab5df .config log report info KASAN: use-after-free Read in lbmIODone
ci-upstream-kasan-gce-selinux-root 2021/03/21 22:04 upstream 5ee96fa9dd78 bea32f74 .config log report info KASAN: use-after-free Read in lbmIODone
ci-upstream-kasan-gce-root 2021/03/12 14:25 upstream f78d76e72a46 429d8a6b .config log report info KASAN: use-after-free Read in lbmIODone
ci-upstream-kasan-gce-root 2021/02/25 02:28 upstream 062c84fccc44 fcc6d71b .config log report info KASAN: use-after-free Read in lbmIODone
ci-upstream-kasan-gce-root 2021/02/06 00:13 upstream dd86e7fa07a3 23a562df .config log report info KASAN: use-after-free Read in lbmIODone
ci-upstream-linux-next-kasan-gce-root 2021/07/07 10:35 linux-next ee268dee405b 4846d5c1 .config log report info KASAN: use-after-free Read in lbmIODone
ci-upstream-linux-next-kasan-gce-root 2021/04/07 16:11 linux-next 5103a5be098c 6a81331a .config log report info KASAN: use-after-free Read in lbmIODone
ci-upstream-linux-next-kasan-gce-root 2021/03/11 01:42 linux-next b01d57bfdc41 764067f3 .config log report info KASAN: use-after-free Read in lbmIODone
ci-upstream-kasan-gce-selinux-root 2020/11/22 05:14 upstream a349e4c65960 0d27f508 .config log report info
ci-upstream-kasan-gce-smack-root 2020/11/06 23:23 upstream bf3e76289cd2 64069d48 .config log report info
ci-upstream-kasan-gce-smack-root 2020/10/25 21:40 upstream 672f88712615 a1839e81 .config log report info
ci-upstream-kasan-gce-smack-root 2020/10/01 22:04 upstream fcadab740480 9602ddf4 .config log report info
ci-upstream-kasan-gce-root 2020/09/27 02:21 upstream eeddbe6841cd 2d5ea0cb .config log report info
ci-upstream-kasan-gce-root 2020/09/21 07:34 upstream ba4f184e126b 9564d2e9 .config log report info
ci-qemu2-arm64-mte 2021/03/05 02:19 upstream cee407c5cc42 f89ed068 .config log report info KASAN: invalid-access Write in lbmIODone
ci-qemu2-arm64-mte 2021/03/04 09:32 upstream f69d02e37a85 d7e4e604 .config log report info KASAN: invalid-access Write in lbmIODone
ci-qemu-upstream-386 2020/12/07 09:32 upstream 0477e9288185 57072f7b .config log report info