syzbot


KASAN: global-out-of-bounds Read in bit_putcs
Status: fixed on 2020/09/25 01:17
Reported-by: syzbot+38a3699c7eaf165b97a6@syzkaller.appspotmail.com
Fix commit: 39b3cffb8cf3 fbcon: prevent user font height or width change from causing potential out-of-bounds access bc5269ca7650 vt_ioctl: change VT_RESIZEX ioctl to check for error return from vc_resize()
First crash: 662d, last: 369d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: KASAN: global-out-of-bounds Read in bit_putcs (log)
Repro: syz .config
similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: global-out-of-bounds Read in bit_putcs (2) 13 350d 367d 0/22 auto-closed as invalid on 2021/02/09 16:38
linux-4.14 KASAN: global-out-of-bounds Read in bit_putcs C 241 11d 660d 0/1 upstream: reported C repro on 2019/12/07 16:26
linux-4.19 KASAN: global-out-of-bounds Read in bit_putcs C done 214 126d 663d 1/1 fixed on 2021/06/24 08:01
Patch testing requests:
Created Duration User Patch Repo Result
2020/09/12 15:31 9m penguin-kernel@i-love.sakura.ne.jp patch upstream report log
2020/09/12 07:27 9m penguin-kernel@i-love.sakura.ne.jp patch upstream report log
2020/09/12 07:25 18m penguin-kernel@i-love.sakura.ne.jp upstream report log

Sample crash report:

Crashes (262):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2020/07/25 03:52 upstream f37e99aca03f 554af388 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/06/06 14:51 upstream 7ae77150d94d e6b89e4e .config log report syz C
ci-upstream-kasan-gce-root 2020/06/06 14:09 upstream 7ae77150d94d e6b89e4e .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/01/12 00:30 upstream bef1d88263ff 4c04afaa .config log report syz C
ci-upstream-kasan-gce-root 2020/01/11 17:47 upstream bef1d88263ff 4c04afaa .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/01/10 08:12 upstream e69ec487b2c7 4de4e9f0 .config log report syz C
ci-upstream-kasan-gce-root 2020/01/09 06:33 upstream b07f636fca1c ddc3e859 .config log report syz C
ci-upstream-kasan-gce-root 2019/12/19 06:38 upstream 2187f215ebaa 79b211f7 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/12/19 03:12 upstream 2187f215ebaa 79b211f7 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/06/07 07:31 linux-next e7b08814b16b e6b89e4e .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/12/19 05:40 linux-next b9c5ef25038d 79b211f7 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/12/18 19:20 linux-next b9c5ef25038d f2fe0772 .config log report syz C
ci-upstream-kasan-gce-root 2020/07/29 06:01 upstream 6ba1b005ffc3 cb93dc6a .config log report syz
ci-upstream-kasan-gce-selinux-root 2020/07/28 07:39 upstream 92ed30191993 cb93dc6a .config log report syz
ci-upstream-kasan-gce-root 2019/12/06 16:33 upstream b0d4beaa5a4b 98b4ef2d .config log report syz
ci-upstream-linux-next-kasan-gce-root 2020/07/31 08:26 linux-next 7b287a5c6ac5 8df85ed9 .config log report syz
ci-upstream-kasan-gce-root 2020/09/24 02:52 upstream 805c6d3c1921 287cd75a .config log report info
ci-upstream-kasan-gce-root 2020/09/15 15:18 upstream fc4f28bb3daf 6989d6f6 .config log report info
ci-upstream-kasan-gce-root 2020/09/11 07:07 upstream 581cb3a26baf 409809d8 .config log report
ci-upstream-kasan-gce-selinux-root 2020/09/09 02:56 upstream 612ab8ad6414 abf9ba4f .config log report
ci-upstream-kasan-gce-selinux-root 2020/09/08 14:19 upstream f4d51dffc6c0 abf9ba4f .config log report
ci-upstream-kasan-gce-selinux-root 2020/09/08 11:21 upstream f4d51dffc6c0 abf9ba4f .config log report
ci-upstream-kasan-gce-selinux-root 2020/08/28 03:01 upstream 15bc20c6af4c 816e0689 .config log report
ci-upstream-kasan-gce-root 2020/08/24 21:16 upstream d012a7190fc1 67b599d1 .config log report
ci-upstream-kasan-gce-root 2020/08/22 09:06 upstream f873db9acd3c 6436ce4b .config log report
ci-upstream-kasan-gce-root 2020/08/10 10:20 upstream 9420f1ce0186 70301872 .config log report
ci-upstream-kasan-gce-selinux-root 2020/08/10 03:42 upstream 9420f1ce0186 70301872 .config log report
ci-upstream-kasan-gce-selinux-root 2020/08/09 18:27 upstream 06a81c1c7db9 70301872 .config log report
ci-upstream-kasan-gce-selinux-root 2020/08/08 06:30 upstream 5631c5e0eb90 ff51e522 .config log report
ci-upstream-kasan-gce-root 2020/08/07 10:05 upstream d6efb3ac3e6c cb436c69 .config log report
ci-upstream-kasan-gce-selinux-root 2020/08/06 04:48 upstream fffe3ae0ee84 0487ea6f .config log report
ci-upstream-kasan-gce-selinux-root 2020/08/04 16:33 upstream c0842fbc1b18 80a06902 .config log report
ci-upstream-kasan-gce-root 2020/08/01 10:12 upstream d8b9faec54ae d895b3be .config log report
ci-upstream-kasan-gce-root 2020/07/25 05:37 upstream f37e99aca03f 554af388 .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/24 05:29 upstream d15be546031c 70c104a1 .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/24 01:37 upstream d15be546031c 70c104a1 .config log report
ci-upstream-kasan-gce-root 2020/07/23 06:32 upstream 8c26c87b0532 340ea530 .config log report
ci-upstream-kasan-gce-root 2020/07/20 20:55 upstream 5714ee50bb43 4285ffa3 .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/18 20:19 upstream 6a70f89cc58f 9c812472 .config log report
ci-upstream-kasan-gce-root 2020/07/18 04:07 upstream 8882572675c1 9c812472 .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/17 08:00 upstream f8456690ba8e 54b3c45e .config log report
ci-upstream-kasan-gce-root 2020/07/14 18:52 upstream 0dc589da873b 609fb517 .config log report
ci-upstream-kasan-gce-root 2020/07/13 15:18 upstream 11ba468877bb f90ec899 .config log report
ci-upstream-kasan-gce-root 2020/07/13 13:32 upstream 11ba468877bb f90ec899 .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/12 20:30 upstream 0aea6d5c5be3 115e1930 .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/12 09:55 upstream 0aea6d5c5be3 115e1930 .config log report
ci-upstream-kasan-gce-root 2020/07/11 06:36 upstream a581387e415b 18d18b59 .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/11 00:44 upstream a581387e415b 18d18b59 .config log report
ci-qemu-upstream 2020/01/15 12:05 upstream 95e20af9fb9c fa12bd3c .config log report
ci-upstream-kasan-gce-root 2019/12/05 14:53 upstream 2f13437b8917 4fb74474 .config log report
ci-qemu-upstream-386 2020/01/18 21:26 upstream 8965de70cbaf bc8bc756 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/08/25 19:15 linux-next 3a00d3dfd4b6 344da168 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/08/16 19:17 linux-next 4993e4fe12af 424dd8e7 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/08/13 13:14 linux-next bc09acc9f224 bc15f7db .config log report
ci-upstream-linux-next-kasan-gce-root 2020/08/12 02:11 linux-next 4c9b89d8981b bb3e5fe6 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/21 17:46 linux-next de2e69cfe54a 21f1765e .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/20 19:23 linux-next ab8be66e724e 4285ffa3 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/17 07:52 linux-next 4c43049f19a2 54b3c45e .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/14 22:33 linux-next 5fb3d6042387 609fb517 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/14 04:23 linux-next be978f8feb1d ce4c95b3 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/12 23:51 linux-next d31958b30ea3 9ebcc5b1 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/12 07:29 linux-next d31958b30ea3 115e1930 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/11 22:47 linux-next d31958b30ea3 18d18b59 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/05 14:51 linux-next 282ffdf30a3e 4fb74474 .config log report