syzbot


SYZFAIL: tun: can't open device (5)

Status: upstream: reported on 2025/02/20 22:35
Reported-by: syzbot+7a9c5de91daba5133ee2@syzkaller.appspotmail.com
First crash: 1d22h, last: 1d22h
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd SYZFAIL: tun: can't open device (2) 1 1309d 1309d 0/3 auto-closed as invalid on 2021/10/22 18:00
openbsd SYZFAIL: tun: can't open device (3) 86 1135d 1135d 0/3 closed as invalid on 2022/01/15 08:41
openbsd SYZFAIL: tun: can't open device syz 4 1451d 1451d 3/3 fixed on 2021/03/10 05:59
openbsd SYZFAIL: tun: can't open device (4) 8 125d 226d 0/3 auto-obsoleted due to no activity on 2025/01/18 18:59

Sample crash report:
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
SYZFAIL: ioctl remote attach failed
 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
SYZFAIL: ioctl remote attach failed
 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
SYZFAIL: ioctl remote attach failed
 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
ifconfig: socket: No buffer space available
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)
SYZFAIL: repeatedly failed to execute the program
proc=0 req=1 state=1 status=67 (errno 35: Resource temporarily unavailable)

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/02/20 22:34 openbsd e17cfef6a95f 0808a665 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore SYZFAIL: tun: can't open device
* Struck through repros no longer work on HEAD.