syzbot


INFO: task hung in tty_ldisc_hangup
Status: fixed on 2020/03/18 22:57
Reported-by: syzbot+867ab30bf29852e02b1c@syzkaller.appspotmail.com
Fix commit: a4719f6d07b2 vt: selection, push sel_lock up
First crash: 891d, last: 820d

Fix bisection: fixed by (bisect log) :
commit a4719f6d07b2c63223f7452c435c5f578f105cfe
Author: Jiri Slaby <jslaby@suse.cz>
Date: Fri Feb 28 11:54:06 2020 +0000

  vt: selection, push sel_lock up

similar bugs (5):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in tty_ldisc_hangup (2) C error 1 231d 381d 0/1 upstream: reported C repro on 2021/05/02 05:40
upstream INFO: task hung in tty_ldisc_hangup (2) 1 167d 167d 0/22 closed as invalid on 2022/02/07 19:09
linux-4.14 INFO: task hung in tty_ldisc_hangup (2) 1 430d 430d 0/1 auto-closed as invalid on 2021/07/12 09:20
linux-4.19 INFO: task hung in tty_ldisc_hangup C done 10 824d 891d 1/1 fixed on 2020/03/16 09:27
upstream INFO: task hung in tty_ldisc_hangup C inconclusive done 15 818d 892d 0/22 closed as dup on 2020/07/30 01:09

Sample crash report:

Crashes (17):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2019/12/22 02:12 linux-4.14.y e1f7d50ae3a3 bc586918 .config log report syz C
ci2-linux-4-14 2019/12/15 19:17 linux-4.14.y a844dc4c5442 eef6e580 .config log report syz C
ci2-linux-4-14 2019/12/08 14:10 linux-4.14.y a844dc4c5442 1508f453 .config log report syz C
ci2-linux-4-14 2020/02/17 19:39 linux-4.14.y 98db2bf27b9e 72bfa6f2 .config log report
ci2-linux-4-14 2020/02/09 04:05 linux-4.14.y e0f8b8a65a47 06150bf1 .config log report
ci2-linux-4-14 2020/02/05 11:13 linux-4.14.y 9fa690a2a016 93e5e335 .config log report
ci2-linux-4-14 2020/01/20 22:48 linux-4.14.y c1141b3aab36 8eda0b95 .config log report
ci2-linux-4-14 2020/01/12 12:43 linux-4.14.y 6d0c334a400d 31290a45 .config log report
ci2-linux-4-14 2020/01/12 05:07 linux-4.14.y b0cdffaa546e 4c04afaa .config log report
ci2-linux-4-14 2020/01/09 15:00 linux-4.14.y b0cdffaa546e 4de4e9f0 .config log report
ci2-linux-4-14 2019/12/31 16:55 linux-4.14.y 4c5bf01e16a7 25a0186e .config log report
ci2-linux-4-14 2019/12/22 09:37 linux-4.14.y e1f7d50ae3a3 bc586918 .config log report
ci2-linux-4-14 2019/12/20 03:38 linux-4.14.y bfb9e5c03076 36650b4b .config log report
ci2-linux-4-14 2019/12/18 18:26 linux-4.14.y bfb9e5c03076 79b211f7 .config log report
ci2-linux-4-14 2019/12/18 15:49 linux-4.14.y bfb9e5c03076 64ca0a37 .config log report
ci2-linux-4-14 2019/12/18 11:23 linux-4.14.y bfb9e5c03076 64ca0a37 .config log report
ci2-linux-4-14 2019/12/17 17:10 linux-4.14.y a844dc4c5442 1af3875f .config log report