SYZFAIL: open of /dev/kcov failed

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: f2a193a967e3 vm_pageout: reduce number of flush() params
git tree: freebsd-src
console output: https://syzkaller.appspot.com/x/log.txt?x=11e07482580000
dashboard link: https://syzkaller.appspot.com/bug?extid=d26dbed78df5a9959cc6

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d26dbe...@syzkaller.appspotmail.com

SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
(errno 2: No such file or directory)
SYZFAIL: repeatedly failed to execute the program
proc=4 req=231 state=1 status=67 (errno 35: Resource temporarily unavailable)


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