syzbot


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: 393d, last: 378d
similar bugs (6):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd no output from test machine (2) C 89865 393d 445d 0/3 closed as invalid on 2020/06/30 06:21
openbsd no output from test machine (6) C 2779 252d 274d 3/3 fixed on 2020/11/17 21:57
openbsd no output from test machine (5) C 49467 274d 371d 3/3 fixed on 2020/10/27 00:21
openbsd no output from test machine (4) syz 14713 371d 378d 0/3 closed as invalid on 2020/07/21 11:12
openbsd no output from test machine C 551400 445d 1020d 3/3 fixed on 2020/05/08 10:08
openbsd no output from test machine (7) C 2841 2h16m 252d 0/3 upstream: reported C repro on 2020/11/17 22:12
Crashes (25293):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-openbsd-main 2020/07/09 03:57 openbsd 09dd33a6a6aa bc238812 .config log syz C
ci-openbsd-multicore 2020/07/14 22:29 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 22:14 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-main 2020/07/14 21:56 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 21:45 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-multicore 2020/07/14 21:32 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 21:19 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-main 2020/07/14 20:58 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 20:42 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 20:27 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-main 2020/07/14 20:09 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-main 2020/07/14 19:56 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 19:40 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 19:23 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 19:07 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 18:51 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 18:35 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 18:16 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 18:00 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 17:44 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-multicore 2020/07/14 17:25 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-multicore 2020/07/14 17:02 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-main 2020/07/14 16:40 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 16:24 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 16:10 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 15:54 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 15:39 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-multicore 2020/07/14 15:24 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-multicore 2020/07/14 15:07 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-multicore 2020/07/14 14:49 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 14:33 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-multicore 2020/07/14 14:22 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-main 2020/07/14 14:03 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 13:48 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 13:33 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 13:19 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-multicore 2020/07/14 13:04 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 12:51 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 12:35 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-multicore 2020/07/14 12:22 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 12:06 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 11:48 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/07/14 11:35 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-multicore 2020/07/14 11:19 openbsd 07af7ebb9803 6f458026 .config log
ci-openbsd-setuid 2020/06/30 06:22 openbsd 7137d9bb1557 917afeaa .config log