syzbot


INFO: task hung in tty_ldisc_hangup
Status: closed as dup on 2020/07/30 01:09
Reported-by: syzbot+3105793febc8f3e591ce@syzkaller.appspotmail.com
First crash: 242d, last: 167d

Cause bisection: the bug happens on the oldest tested release
Crash: no output from test machine (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log):

commit e8c75a30a23c6ba63f4ef6895cbf41fd42f21aa2
Author: Jiri Slaby <jslaby@suse.cz>
Date: Fri Feb 28 11:54:06 2020 +0000

  vt: selection, push sel_lock up

Duplicate of (1):
Title Repro Bisected Count Last Reported
possible deadlock in tty_unthrottle 3 136d 160d
similar bugs (2):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.19 INFO: task hung in tty_ldisc_hangup C fix 10 173d 241d 1/1 fixed on 2020/03/16 09:27
linux-4.14 INFO: task hung in tty_ldisc_hangup C fix 17 170d 241d 1/1 fixed on 2020/03/18 22:57

Sample crash report:

Crashes (15):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-root 2019/12/23 10:28 upstream c6017471 8b967267 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-selinux-root 2019/12/22 17:24 upstream b8e382a1 8b967267 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-selinux-root 2019/12/16 03:13 upstream 07c4b9e9 eef6e580 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2019/12/15 16:15 upstream 07c4b9e9 eef6e580 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-selinux-root 2019/12/15 14:34 upstream 07c4b9e9 eef6e580 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2019/12/15 14:00 upstream 07c4b9e9 eef6e580 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-selinux-root 2019/12/11 01:46 upstream 6794862a 5a5826a1 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-selinux-root 2019/12/10 12:20 upstream 6794862a 4b83c8fb .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2019/12/10 06:14 upstream 6794862a 4b83c8fb .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2019/12/09 10:41 upstream e42617b8 1508f453 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2019/12/07 02:08 upstream 7ada90eb 85f26751 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-selinux-root 2019/12/07 01:59 upstream 7ada90eb 85f26751 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2020/02/20 09:42 upstream ca7e1fd1 81230308 .config log report gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2020/01/29 16:25 upstream b3a60822 5ed23f9a .config log report gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2019/12/17 17:55 upstream ea200dec a6bc9c88 .config log report gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org