syzbot


KASAN: use-after-free Read in dump_schedule (2)
Status: upstream: reported C repro on 2021/05/24 09:12
Reported-by: syzbot+a6e609c672ce997c14a8@syzkaller.appspotmail.com
First crash: 158d, last: 1d14h

Cause bisection: introduced by (bisect log) :
commit 7b9eba7ba0c1b24df42b70b62d154b284befbccf
Author: Leandro Dorileo <leandro.maciel.dorileo@intel.com>
Date: Mon Apr 8 17:12:17 2019 +0000

  net/sched: taprio: fix picos_per_byte miscalculation

Crash: WARNING in taprio_dequeue (log)
Repro: syz .config
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: use-after-free Read in dump_schedule C done done 7 309d 419d 21/22 fixed on 2021/03/10 01:48
Patch testing requests:
Created Duration User Patch Repo Result
2021/06/14 17:32 16m chouhan.shreyansh630@gmail.com upstream OK

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 2021/10/07 09:20 upstream 5af4055fa813 55aa55c2 .config log report syz
ci-upstream-kasan-gce 2021/09/07 08:21 upstream 4b93c544e90e 55aa55c2 .config log report syz
ci-upstream-kasan-gce 2021/08/05 10:47 upstream 251a1524293d 55aa55c2 .config log report syz
ci-upstream-net-this-kasan-gce 2021/06/22 16:52 net 0cd58e5c53ba 3c7fef33 .config log report syz
Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2021/10/27 00:50 upstream 3906fe9bb7f1 d50eb50a .config log report syz C KASAN: use-after-free Read in dump_schedule
ci-upstream-kasan-gce-selinux-root 2021/10/18 20:48 upstream cf52ad5ff16c 0c5d9412 .config log report syz C KASAN: use-after-free Read in dump_schedule
ci-upstream-kasan-gce 2021/07/06 04:37 upstream 3dbdb38e2869 55aa55c2 .config log report syz KASAN: use-after-free Read in dump_schedule
ci-upstream-net-this-kasan-gce 2021/05/23 16:09 net e29f011e8fc0 3c7fef33 .config log report syz KASAN: use-after-free Read in dump_schedule
ci-upstream-net-kasan-gce 2021/05/23 13:25 net-next f5120f599880 3c7fef33 .config log report syz KASAN: use-after-free Read in dump_schedule
ci-upstream-kasan-gce 2021/07/05 22:54 upstream 3dbdb38e2869 55aa55c2 .config log report info KASAN: use-after-free Read in dump_schedule
ci-upstream-net-kasan-gce 2021/05/23 10:13 net-next f5120f599880 3c7fef33 .config log report info KASAN: use-after-free Read in dump_schedule