SYZFAIL: ioctl init trace write failed

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: a3394b6a23fb m4: avoid warnings about too-long initializer..
git tree: freebsd-src
console output: https://syzkaller.appspot.com/x/log.txt?x=10d05522580000
dashboard link: https://syzkaller.appspot.com/bug?extid=eabb3c27bcfad9825665

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+eabb3c...@syzkaller.appspotmail.com

SYZFAIL: ioctl init trace write failed
(errno 25: Inappropriate ioctl for device)
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=10 state=1 status=67 (errno 9: Bad file descriptor)
if_delmulti_locked: detaching ifnet instance 0xfffffe00077c3000
if_delmulti_locked: detaching ifnet instance 0xfffffe00077c3000
if_delmulti_locked: detaching ifnet instance 0xfffffe00077c3000


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