syzbot


INFO: rcu detected stall in security_file_open (3)
Status: fixed on 2020/11/16 12:12
Reported-by: syzbot+d2b6e8cc299748fecf25@syzkaller.appspotmail.com
Fix commit: 1d0e850a49a5 afs: Fix cell removal
First crash: 562d, last: 477d

Cause bisection: introduced by (bisect log) :
commit c9d8f5f0692d5960ed50970ffe63756fb8f96cdb
Author: Kirill Tkhai <ktkhai@virtuozzo.com>
Date: Fri Nov 9 10:33:27 2018 +0000

  fuse: Protect fi->nlookup with fi->lock

Crash: KASAN: use-after-free Read in batadv_iv_ogm_queue_add (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log) :
commit 1d0e850a49a5b56f8f3cb51e74a11e2fedb96be6
Author: David Howells <dhowells@redhat.com>
Date: Fri Oct 16 12:21:14 2020 +0000

  afs: Fix cell removal

similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in security_file_open 5 778d 779d 0/22 closed as invalid on 2019/12/04 14:04
upstream INFO: rcu detected stall in security_file_open (2) 2 743d 743d 0/22 closed as invalid on 2020/01/08 05:23
upstream INFO: rcu detected stall in security_file_open (4) 1 275d 275d 0/22 auto-closed as invalid on 2021/06/18 10:54

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2020/09/29 17:36 upstream fb0155a09b02 1b88c6d5 .config log report syz C
ci-upstream-net-kasan-gce 2020/07/06 17:26 net-next e44f65fd666c 51095195 .config log report