panic: wd changed: "\x00\x00\x00\x00\x00" -> "/root"

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 676865473293 remove prototypes with no matching function
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=163cd242980000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=7e8b35b341fdd9963afe

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/c0fa4e86dd49/disk-67686547.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/e2fa7f760652/bsd-67686547.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/19f476774c6b/kernel-67686547.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+7e8b35...@syzkaller.appspotmail.com

panic: wd changed: "\x00\x00\x00\x00\x00" -> "/root"

goroutine 55 [running]:
github.com/google/syzkaller/pkg/osutil.Abs({0xc000754ba0, 0x1d})
/syzkaller/gopath/src/github.com/google/syzkaller/pkg/osutil/osutil.go:334 +0x18d
github.com/google/syzkaller/pkg/ipc.(*Env).makeCommand(0xc0006bf700, 0xc000327d58, {0xc0f3cf?, 0x0?})
/syzkaller/gopath/src/github.com/google/syzkaller/pkg/ipc/ipc.go:627 +0xf5
github.com/google/syzkaller/pkg/ipc.(*Env).RestartIfNeeded(0xc0006bf700, 0xc000327d58)
/syzkaller/gopath/src/github.com/google/syzkaller/pkg/ipc/ipc.go:390 +0xce
main.(*Proc).executeProgram(0xc0000a2c00, {0x106c, {0xc000883700, 0x56b, 0x56b}, {0x15, 0xffe2, 0x0}, 0x1, 0x0, ...})
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:119 +0x52
main.(*Proc).execute(0xc0000a2c00?, {0x106c, {0xc000883700, 0x56b, 0x56b}, {0x15, 0xffe2, 0x0}, 0x1, 0x0, ...})
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:101 +0x98
main.(*Proc).loop(0xc0000a2c00)
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:52 +0x278
created by main.startProc in goroutine 1
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:38 +0x10a


OpenBSD/amd64 (Amnesiac) (tty00)

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