syzbot


KASAN: slab-out-of-bounds Read in fbcon_get_font
Status: upstream: reported C repro on 2019/12/03 22:25
Reported-by: syzbot+4455ca3b3291de891abc@syzkaller.appspotmail.com
First crash: 656d, last: 350d

Cause bisection: introduced by (bisect log) :
commit 2de50e9674fc4ca3c6174b04477f69eb26b4ee31
Author: Russell Currey <ruscur@russell.cc>
Date: Mon Feb 8 04:08:20 2016 +0000

  powerpc/powernv: Remove support for p5ioc2

Crash: BUG: spinlock lockup suspected in nf_conntrack_lock (log)
Repro: C syz .config

Fix bisection: the fix commit could be any of (bisect log):
  6b643a07a7e4 x86/entry, ubsan, objtool: Whitelist __ubsan_handle_*()
  8e8bb06d199a x86/entry, bug: Comment the instrumentation_begin() usage for WARN()
  14d3b376b6c3 x86/entry, cpumask: Provide non-instrumented variant of cpu_is_offline()
  33aea07f30c2 compiler_attributes.h: Support no_sanitize_undefined check with GCC 4
  5144f8a8dfd7 compiler_types.h: Add __no_sanitize_{address,undefined} to noinstr
  acf7b0bf7dcf kasan: Fix required compiler version
  734d099ba644 objtool: Don't consider vmlinux a C-file
  7b861a53e46b kasan: Bump required compiler version
  5ddbc4082e10 x86, kcsan: Add __no_kcsan to noinstr
  e3a9e681adb7 x86/entry: Fixup bad_iret vs noinstr
  c7aadc09321d x86/entry: Increase entry_stack size to a full page
  e79302ae8c8c kcsan: Remove __no_kcsan_or_inline
  145a773aef83 x86/entry: Fix #UD vs WARN more
  e82587336695 x86, kcsan: Remove __no_kcsan_or_inline usage
  2c92d787cc9f Merge branch 'linus' into x86/entry, to resolve conflicts
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 KASAN: slab-out-of-bounds Read in fbcon_get_font C error 35 362d 657d 0/1 upstream: reported C repro on 2019/12/03 02:00
linux-4.19 KASAN: slab-out-of-bounds Read in fbcon_get_font C done 97 349d 657d 1/1 fixed on 2020/11/05 11:24
Patch testing requests:
Created Duration User Patch Repo Result
2021/04/15 14:08 18m alaaemadhossney.ae@gmail.com upstream OK

Sample crash report:

Crashes (137):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2019/12/13 14:49 upstream ae4b064e2a61 08003f64 .config log report syz C
ci-upstream-kasan-gce-root 2019/12/13 10:01 upstream ae4b064e2a61 08003f64 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/12/09 21:21 upstream e42617b825f8 b31eda3d .config log report syz C
ci-upstream-kasan-gce-root 2019/12/09 15:19 upstream e42617b825f8 b31eda3d .config log report syz C
ci-upstream-kasan-gce-root 2019/12/03 21:18 upstream 76bb8b05960c ae13a849 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/12/03 20:10 upstream 76bb8b05960c ae13a849 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/12/24 16:40 linux-next 7ddd09fc4b74 be5c2c81 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/12/21 23:26 linux-next 7ddd09fc4b74 bc586918 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/12/13 08:12 linux-next 78adcacd4edb 08003f64 .config log report syz C
ci-upstream-kasan-gce-root 2020/01/03 08:40 upstream 7ca4ad5ba886 25a0186e .config log report syz
ci-upstream-kasan-gce-selinux-root 2020/01/03 07:45 upstream 7ca4ad5ba886 25a0186e .config log report syz
ci-upstream-linux-next-kasan-gce-root 2020/01/08 21:59 linux-next 4becfd1b26ef ddc3e859 .config log report syz
ci-upstream-kasan-gce-smack-root 2020/10/04 11:21 upstream 22fbc037cd32 5ef9c291 .config log report info
ci-upstream-kasan-gce-smack-root 2020/10/04 00:16 upstream 22fbc037cd32 1a3f9408 .config log report info
ci-upstream-kasan-gce-smack-root 2020/09/30 13:38 upstream 02de58b24d2e 8516f6d3 .config log report info
ci-upstream-kasan-gce-smack-root 2020/09/29 13:32 upstream fb0155a09b02 1b88c6d5 .config log report info
ci-upstream-kasan-gce-root 2020/09/28 12:17 upstream a1b8638ba132 6bfdbe89 .config log report info
ci-upstream-kasan-gce-root 2020/09/19 15:49 upstream eb5f95f1593f 53ce8104 .config log report info
ci-upstream-kasan-gce-smack-root 2020/09/04 11:16 upstream e28f0104343d abf9ba4f .config log report
ci-upstream-kasan-gce-smack-root 2020/08/29 00:45 upstream 96d454cd2c16 d5a3ae1f .config log report
ci-upstream-kasan-gce-selinux-root 2020/08/23 06:07 upstream c3d8f220d012 1da71ab0 .config log report
ci-upstream-kasan-gce-smack-root 2020/08/17 12:00 upstream 2cc3c4b3c2e9 424dd8e7 .config log report
ci-upstream-kasan-gce-smack-root 2020/08/15 01:24 upstream 7fca4dee610d 424dd8e7 .config log report
ci-upstream-kasan-gce-smack-root 2020/08/10 15:55 upstream 9420f1ce0186 70301872 .config log report
ci-upstream-kasan-gce-smack-root 2020/08/06 17:11 upstream 47ec5303d73e 1f122f88 .config log report
ci-upstream-kasan-gce-root 2020/08/03 06:33 upstream bcf876870b95 196277c4 .config log report
ci-upstream-kasan-gce-smack-root 2020/08/03 02:20 upstream 5a30a78924ec 196277c4 .config log report
ci-upstream-kasan-gce-smack-root 2020/08/02 01:30 upstream d52daa8620c6 d895b3be .config log report
ci-upstream-kasan-gce-root 2020/08/01 16:06 upstream 7dc6fd0f3b84 d895b3be .config log report
ci-upstream-kasan-gce-selinux-root 2020/08/01 14:25 upstream 7dc6fd0f3b84 d895b3be .config log report
ci-upstream-kasan-gce-smack-root 2020/07/31 16:00 upstream d8b9faec54ae 8df85ed9 .config log report
ci-upstream-kasan-gce-root 2020/07/30 06:39 upstream d3590ebf6f91 233283a1 .config log report
ci-upstream-kasan-gce-smack-root 2020/07/27 03:45 upstream 92ed30191993 51265195 .config log report
ci-upstream-kasan-gce-root 2020/07/24 11:42 upstream f37e99aca03f 554af388 .config log report
ci-upstream-kasan-gce-root 2020/07/24 09:55 upstream f37e99aca03f 70c104a1 .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/24 06:33 upstream d15be546031c 70c104a1 .config log report
ci-upstream-kasan-gce-root 2020/07/23 14:15 upstream d15be546031c 340ea530 .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/23 12:41 upstream d15be546031c 340ea530 .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/17 05:38 upstream f8456690ba8e 54b3c45e .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/10 15:20 upstream 42f82040ee66 edf162e8 .config log report
ci-upstream-kasan-gce-smack-root 2020/06/27 08:26 upstream 1590a2e1c681 ffec44b5 .config log report
ci-upstream-kasan-gce-root 2020/06/24 09:23 upstream 7ae77150d94d 54566aff .config log report
ci-upstream-kasan-gce-selinux-root 2020/06/21 00:20 upstream 7ae77150d94d c655ec77 .config log report
ci-upstream-kasan-gce-selinux-root 2020/06/16 23:59 upstream 7ae77150d94d 559fbe2d .config log report
ci-upstream-kasan-gce-selinux-root 2020/06/15 10:45 upstream 7ae77150d94d 8e3ab941 .config log report
ci-upstream-kasan-gce-root 2020/06/15 05:26 upstream 7ae77150d94d 2a22c77a .config log report
ci-upstream-kasan-gce-smack-root 2020/06/11 23:58 upstream 7ae77150d94d 58802067 .config log report
ci-upstream-kasan-gce-smack-root 2020/06/11 14:32 upstream 7ae77150d94d 3ab7a05a .config log report
ci-upstream-kasan-gce-smack-root 2020/06/10 12:59 upstream 7ae77150d94d 860c4de9 .config log report
ci-upstream-kasan-gce-selinux-root 2020/06/08 12:37 upstream 7ae77150d94d 7751efd0 .config log report
ci-upstream-kasan-gce-smack-root 2020/06/06 18:34 upstream 7ae77150d94d e6b89e4e .config log report
ci-upstream-kasan-gce-smack-root 2020/06/02 02:16 upstream 9bf9511e3d9f a0331e89 .config log report
ci-upstream-kasan-gce-root 2020/05/25 19:42 upstream 9cb1fd0efd19 30927cd7 .config log report
ci-upstream-kasan-gce-smack-root 2020/05/25 09:43 upstream 9cb1fd0efd19 11284182 .config log report
ci-qemu-upstream-386 2020/05/07 21:56 upstream 5d286d5ebcf6 435c6d53 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/08/26 20:25 linux-next f37be72473a0 318430cb .config log report
ci-upstream-linux-next-kasan-gce-root 2020/08/14 23:51 linux-next 4993e4fe12af 424dd8e7 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/08/12 23:26 linux-next bc09acc9f224 bc15f7db .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/27 02:07 linux-next 26027945c94a 51265195 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/24 00:16 linux-next 4f5baedd579d 70c104a1 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/23 09:30 linux-next 73aece61f643 340ea530 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/02 14:28 linux-next aab2003999e7 bed10395 .config log report