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: 195d, last: 156d
similar bugs (2):
Kernel Title Repro Bisected Count Last Reported Patched Status
openbsd uvm_fault: wsmux_do_ioctl (3) C 2 65d 73d 0/3 closed as dup on 2019/02/10 09:16
openbsd uvm_fault: wsmux_do_ioctl (2) C 17 82d 86d 3/3 fixed on 2019/02/01 17:26

Sample crash report:

All crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro
ci-openbsd-main 2018/10/10 22:40 openbsd 52b89152 5f818b4b log report
ci-openbsd-main 2018/11/18 18:47 openbsd df0bbf74 7aaa8122 log report