no output from test machine (3)

Status: fixed on 2020/07/14 23:08
Reported-by: syzbot+462539bc18fef8fc26cc@syzkaller.appspotmail.com
Fix commit: A pty write containing VDISCARD, VREPRINT, or various retyping cases of VERASE would perform (sometimes irrelevant) compute in the kernel which can be heavy (especially with our insufficient tty subsystem locking). Use tsleep_nsec for 1 tick in such circumstances to yield cpu, and also bring interruptability to ptcwrite() https://syzkaller.appspot.com/bug?extid=462539bc18fef8fc26cc ok kettenis millert, discussions with greg and anton
First crash: 2234d, last: 2219d
▶ ▼ Similar bugs (7)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd no output from test machine (2) -1 syz, C 89865 2234d 2286d 0/4 closed as invalid on 2020/06/30 06:21
openbsd no output from test machine (6) -1 syz, C 2779 2093d 2115d 3/4 fixed on 2020/11/17 21:57
openbsd no output from test machine (5) -1 syz, C 49467 2115d 2212d 3/4 fixed on 2020/10/27 00:21
openbsd no output from test machine (8) -1 syz, C 904062 8m 1470d 0/4 upstream: reported C repro on 2022/08/02 15:56
openbsd no output from test machine (4) -1 syz 14713 2212d 2219d 0/4 closed as invalid on 2020/07/21 11:12
openbsd no output from test machine -1 syz, C 551400 2286d 2861d 3/4 fixed on 2020/05/08 10:08
openbsd no output from test machine (7) -1 syz, C 124310 1470d 2093d 3/4 fixed on 2022/08/02 15:51
Crashes (25293):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/07/09 03:57 openbsd 09dd33a6a6aa bc238812 .config console log syz C ci-openbsd-main
2020/07/14 22:29 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-multicore
2020/07/14 22:14 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 21:56 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-main
2020/07/14 21:45 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 21:32 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-multicore
2020/07/14 21:19 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 20:58 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-main
2020/07/14 20:42 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 20:27 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 20:09 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-main
2020/07/14 19:56 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-main
2020/07/14 19:40 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 19:23 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 19:07 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 18:51 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 18:35 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 18:16 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 18:00 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 17:44 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 17:25 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-multicore
2020/07/14 17:02 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-multicore
2020/07/14 16:40 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-main
2020/07/14 16:24 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 16:10 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 15:54 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 15:39 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 15:24 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-multicore
2020/07/14 15:07 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-multicore
2020/07/14 14:49 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-multicore
2020/07/14 14:33 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 14:22 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-multicore
2020/07/14 14:03 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-main
2020/07/14 13:48 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 13:33 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 13:19 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 13:04 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-multicore
2020/07/14 12:51 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 12:35 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 12:22 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-multicore
2020/07/14 12:06 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 11:48 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 11:35 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-setuid
2020/07/14 11:19 openbsd 07af7ebb9803 6f458026 .config console log ci-openbsd-multicore
2020/06/30 06:22 openbsd 7137d9bb1557 917afeaa .config console log ci-openbsd-setuid
* Struck through repros no longer work on HEAD.