syzbot


KASAN: vmalloc-out-of-bounds Read in bpf_trace_run2
Status: fixed on 2021/04/13 19:14
Reported-by: syzbot+845923d2172947529b58@syzkaller.appspotmail.com
Fix commit: befe6d946551 tracepoint: Do not fail unregistering a probe due to memory failure
First crash: 439d, last: 279d

Cause bisection: introduced by (bisect log) :
commit 0a93dc1c18fd86f936bcb44f72dc044c0ea826a8
Author: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Date: Wed Oct 12 11:11:16 2016 +0000

  [media] dvb-core: don't break long lines

Crash: WARNING in nf_unregister_net_hook (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log) :
commit befe6d946551d65cddbd32b9cb0170b0249fd5ed
Author: Steven Rostedt (VMware) <rostedt@goodmis.org>
Date: Wed Nov 18 14:34:05 2020 +0000

  tracepoint: Do not fail unregistering a probe due to memory failure

similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 BUG: unable to handle kernel paging request in bpf_trace_run2 C 4 281d 436d 0/1 upstream: reported C repro on 2020/09/22 18:31

Sample crash report:

Crashes (5):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-bpf-next-kasan-gce 2020/09/19 21:45 bpf-next 70b971118e07 53ce8104 .config log report syz C
ci-upstream-bpf-kasan-gce 2021/02/26 11:15 bpf 557c223b643a 76f7fc95 .config log report info KASAN: vmalloc-out-of-bounds Read in bpf_trace_run2
ci-upstream-kasan-gce-root 2020/09/22 02:46 upstream ba4f184e126b 9e1fa68e .config log report info
ci-upstream-net-this-kasan-gce 2020/11/09 20:12 net 4e0396c59559 64069d48 .config log report info
ci-upstream-bpf-next-kasan-gce 2021/01/01 07:47 bpf-next 482ec343f40a 79264ae3 .config log report info