syzbot


UBSAN: shift-out-of-bounds in chkSuper
Status: fixed on 2021/04/09 19:46
Reported-by: syzbot+36315852ece4132ec193@syzkaller.appspotmail.com
Fix commit: 3bef198f JFS: more checks for invalid superblock
First crash: 153d, last: 83d

Cause bisection: introduced by (bisect log) [release commit]:
commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sun Sep 15 21:19:32 2019 +0000

  Linux 5.3

Crash: UBSAN: undefined-behaviour in chkSuper (log)
Repro: C syz .config
duplicates (1):
Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
UBSAN: shift-out-of-bounds in diReadSpecial 18 83d 129d 0/22 closed as dup on 2021/01/05 16:08

Sample crash report:

Crashes (28):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2020/12/12 21:22 linux-next 14240d4c bca53db9 .config log report syz C
ci-upstream-kasan-gce-smack-root 2021/02/20 13:00 upstream f40ddce8 3e5ed8b4 .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-smack-root 2021/02/15 03:25 upstream f40ddce8 98682e5e .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-root 2021/02/13 12:28 upstream c6d8570e 98682e5e .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-qemu-upstream 2021/02/13 09:53 upstream c6d8570e 98682e5e .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-root 2021/02/12 13:54 upstream dcc0b490 a5f86b15 .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-smack-root 2021/02/12 13:45 upstream dcc0b490 a5f86b15 .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-selinux-root 2021/02/12 13:40 upstream dcc0b490 a5f86b15 .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-selinux-root 2021/02/12 03:06 upstream 291009f6 a5f86b15 .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-root 2021/02/12 02:20 upstream 291009f6 a5f86b15 .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-smack-root 2021/02/11 22:50 upstream 291009f6 a5f86b15 .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-smack-root 2021/02/11 22:43 upstream 291009f6 a5f86b15 .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-root 2021/02/06 22:36 upstream 1e0d27fc 0655e081 .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-root 2021/01/31 14:32 upstream 6642d600 fc9fd31e .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-smack-root 2021/01/31 01:44 upstream 8c947645 fc9fd31e .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-smack-root 2021/01/26 18:33 upstream 13391c60 55a7d4df .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-smack-root 2021/01/20 10:55 upstream 45dfb8a5 d4f4eca5 .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-selinux-root 2021/01/18 00:06 upstream a1339d63 813be542 .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-root 2021/01/17 22:10 upstream a1339d63 813be542 .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-qemu-upstream-386 2021/02/04 13:11 upstream 61556703 42b90a7c .config log report info UBSAN: shift-out-of-bounds in chkSuper
ci-upstream-kasan-gce-smack-root 2021/01/16 01:24 upstream f4e087c6 65a7a854 .config log report info
ci-upstream-kasan-gce-selinux-root 2021/01/16 00:42 upstream 5ee88057 65a7a854 .config log report info
ci-upstream-kasan-gce-root 2021/01/11 00:19 upstream 0653161f 2c1f2513 .config log report info
ci-qemu-upstream 2021/01/10 22:48 upstream 0653161f 2c1f2513 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 06:04 upstream 3913d00a c2c1d1dd .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/22 20:24 upstream 8653b778 04201c06 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/16 20:07 linux-next 26aed0ea 04201c06 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/12 14:11 linux-next 14240d4c bca53db9 .config log report info