syzbot


INFO: task can't die in wait_on_page_bit_common
Status: upstream: reported C repro on 2020/08/28 22:28
Reported-by: syzbot+17675037466844188253@syzkaller.appspotmail.com
First crash: 333d, last: 147d

Cause bisection: introduced by (bisect log) :
commit 2da22da573481cc4837e246d0eee4d518b3f715e
Author: Mike Christie <mchristi@redhat.com>
Date: Tue Aug 13 16:39:52 2019 +0000

  nbd: fix zero cmd timeout handling v2

Crash: INFO: task hung in do_read_cache_page (log)
Repro: C syz .config
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in do_read_cache_page (2) 6 7d19h 165d 0/1 upstream: reported on 2021/02/09 08:22
upstream INFO: task hung in do_read_cache_page (3) C done 41 21h02m 544d 0/22 upstream: reported C repro on 2020/01/27 06:32

Sample crash report:

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2020/09/07 02:11 linux-next 7a6956579ce6 abf9ba4f .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/09/03 13:50 linux-next 7a6956579ce6 abf9ba4f .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/08/24 22:22 linux-next d8be0e12a522 67b599d1 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/02/26 14:01 linux-next d01f2f7e3557 76f7fc95 .config log report info INFO: task can't die in wait_on_page_bit_common