INFO: task hung in do_truncate (2)
Status: upstream: reported C repro on 2020/06/11 04:48
First crash: 375d, last: 192d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in sysfs_warn_dup (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log) :
commit dfefd226b0bf7c435a58d75a0ce2f9273b9825f6
Author: Alexey Dobriyan <>
Date: Tue Dec 15 03:15:03 2020 +0000

  mm: cleanup kstrto*() usage

similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in do_truncate C 7 944d 1108d 0/22 closed as dup on 2018/09/08 15:38

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2020/06/07 04:44 upstream 7ae77150 e6b89e4e .config log report syz C