panic: runtime error: invalid memory address or nil pointer dereference (9)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 10309c388f04 add bitmap_intersects() bitmap_from_arr32()
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=147b1d66180000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=161808d9f94f01d31205

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1bf691c226a7/disk-10309c38.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/23fafd971837/bsd-10309c38.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/423a3caa89e2/kernel-10309c38.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+161808...@syzkaller.appspotmail.com

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x9dccbf]

goroutine 33 [running]:
github.com/google/syzkaller/pkg/ipc.(*Gate).Leave(0xc00044dd80, 0xa)
/syzkaller/gopath/src/github.com/google/syzkaller/pkg/ipc/gate.go:51 +0x1f
main.(*Proc).executeRaw(0xc001e54a00, 0x0?, 0xc0024cd780, 0x1)
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:339 +0x1c6
main.(*Proc).execute(0xc001e54a00, 0xc001653530?, 0xb?, 0xc?, 0xc000107f38?, 0x1?)
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:261 +0xe5
main.(*Proc).executeAndCollide(0xc001e54a00, 0xb9936e?, 0xc0023361e0?, 0xc000107f38?, 0xc001e549c0?)
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:290 +0x25
main.(*Proc).loop(0xc001e54a00)
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:97 +0x3d7
created by main.main in goroutine 1
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:336 +0x1665


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