syzbot


INFO: task hung in drain_all_pages
Status: fixed on 2020/03/21 06:12
Reported-by: syzbot+6ce3da544a58f51d56ca@syzkaller.appspotmail.com
Fix commit: 8541452acba5 s390/mm: Explicitly compare PAGE_DEFAULT_KEY against zero in storage_key_init_range
First crash: 685d, last: 655d

Fix bisection: fixed by (bisect log) :
commit 8541452acba5d39c34f81fa7ab1aaca5bc3e4f74
Author: Nathan Chancellor <natechancellor@gmail.com>
Date: Fri Feb 14 06:42:07 2020 +0000

  s390/mm: Explicitly compare PAGE_DEFAULT_KEY against zero in storage_key_init_range

similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 INFO: task hung in drain_all_pages (2) 2 580d 586d 0/1 auto-closed as invalid on 2020/09/01 16:02
linux-4.19 INFO: task hung in drain_all_pages (2) 2 60d 131d 0/1 upstream: reported on 2021/07/28 03:43
linux-4.14 INFO: task hung in drain_all_pages C done 1 650d 650d 1/1 fixed on 2020/03/26 13:10

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-19 2020/01/20 20:23 linux-4.19.y dc4ba5be1bab c40da18c .config log report syz C