syzbot


uvm_fault: wsmux_do_ioctl
Status: fixed on 2018/12/18 19:33
Reported-by: syzbot+e07caaf3659f6caa6900@syzkaller.appspotmail.com
Fix commit: Utilize sigio with wscons. The old behavior of always making the process group of the process who opens the device the default recipient of sigio is removed as a side-effect of this change. Issuing ioctl(FIOSETOWN) is therefore mandatory in order to receive sigio, which is more consistent with other subsystems supporting sigio.
First crash: 1018d, last: 979d
similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: wsmux_do_ioctl (4) C 3 797d 822d 3/3 fixed on 2019/05/22 04:45
openbsd uvm_fault: wsmux_do_ioctl (3) C 2 888d 896d 0/3 closed as dup on 2019/02/10 09:16
openbsd uvm_fault: wsmux_do_ioctl (2) C 17 905d 909d 3/3 fixed on 2019/02/01 17:26

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-openbsd-main 2018/11/18 18:47 openbsd df0bbf748a07 7aaa8122 log report
ci-openbsd-main 2018/10/10 22:40 openbsd 52b89152be51 5f818b4b log report