syzbot


INFO: task hung in sync_inodes_sb (4)
Status: upstream: reported C repro on 2020/11/21 04:55
Reported-by: syzbot+7d50f1e54a12ba3aeae2@syzkaller.appspotmail.com
First crash: 110d, last: 29d

Cause bisection: introduced by (bisect log) :
commit c68df2e7be0c1238ea3c281fd744a204ef3b15a0
Author: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Date: Thu Sep 15 13:30:02 2016 +0000

  mac80211: allow using AP_LINK_PS with mac80211-generated TIM IE

Crash: general protection fault in batadv_iv_ogm_queue_add (log)
Repro: C syz .config
similar bugs (8):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in sync_inodes_sb (2) 4 685d 703d 0/21 auto-closed as invalid on 2019/10/19 16:22
upstream INFO: task hung in sync_inodes_sb (3) C done 6 428d 437d 16/21 fixed on 2020/02/14 01:19
upstream INFO: task hung in sync_inodes_sb 58 782d 1021d 0/21 closed as dup on 2018/09/08 15:37
linux-4.14 INFO: task hung in sync_inodes_sb 1 398d 398d 0/1 auto-closed as invalid on 2020/06/02 17:26
android-49 INFO: task hung in sync_inodes_sb 11 922d 1001d 0/3 auto-closed as invalid on 2019/02/24 06:19
android-49 INFO: task hung in sync_inodes_sb (2) 2 511d 673d 0/3 auto-closed as invalid on 2020/02/10 00:14
linux-4.14 INFO: task hung in sync_inodes_sb (2) C 4 13d 59d 0/1 upstream: reported C repro on 2021/01/07 19:48
linux-4.19 INFO: task hung in sync_inodes_sb C 2 13d 149d 0/1 upstream: reported C repro on 2020/10/09 07:19

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-root 2021/01/03 08:44 upstream 3516bd72 e6b0d314 .config log report syz C
Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2020/12/04 02:11 upstream 34816d20 e6b0d314 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/11/17 04:47 linux-next 03430750 1bf9a662 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/02/06 20:50 upstream 1e0d27fc 0655e081 .config log report info INFO: task hung in sync_inodes_sb