panic: bad arg kind: <nil> (13)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 8f98edf97379 enable POOL_DEBUG after 7.5 release OK deraadt@
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=15ed69d1180000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=a8abe155ddac7b0f02f4

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/d1b5807ff446/disk-8f98edf9.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/cff7ad985c43/bsd-8f98edf9.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c92390de3796/kernel-8f98edf9.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a8abe1...@syzkaller.appspotmail.com

panic: bad arg kind: <nil>

goroutine 36 [running]:
github.com/google/syzkaller/prog.clone({0x0?, 0x0?}, 0xc0000c7b78?)
/syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:94 +0x5d9
github.com/google/syzkaller/prog.cloneCall(0xc001592230, 0x12c93c0?)
/syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:36 +0x145
github.com/google/syzkaller/prog.cloneCalls({0xc0016434c0, 0x7, 0xc000d279a0?}, 0xc001038000?)
/syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:23 +0x66
github.com/google/syzkaller/prog.(*Prog).Clone(0xc001549c40)
/syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:14 +0x8d
github.com/google/syzkaller/prog.AssignRandomAsync(0x1?, 0xc001145560?)
/syzkaller/gopath/src/github.com/google/syzkaller/prog/collide.go:27 +0x2d
main.(*Proc).randomCollide(0xc000a24040, 0xc00142c8a0?)
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:317 +0x98
main.(*Proc).executeAndCollide(0xc000a24040, 0xba0842?, 0xc000a4cea0?, 0xc0000c7e08?, 0xc000a24000?)
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:298 +0x50
main.(*Proc).smashInput(0xc000a24040, 0xc00156b0b0)
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:223 +0x1cb
main.(*Proc).loop(0xc000a24040)
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:78 +0xf2
created by main.main in goroutine 1
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:336 +0x1665


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