panic: wd changed: "/tmp" -> "(unreachable)/"

goroutine 68 [running]:
github.com/google/syzkaller/pkg/osutil.Abs(0xc000afe160, 0x1a, 0x7ab8bb, 0x11)
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/osutil/osutil.go:290 +0x26c
github.com/google/syzkaller/pkg/ipc.makeCommand(0x1, 0xc0024ea020, 0x1, 0x1, 0xc0000900c0, 0xc000470128, 0xc000470180, 0x2b4e76800000, 0x1000000, 0x1000000, ...)
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/ipc/ipc.go:548 +0x13c
github.com/google/syzkaller/pkg/ipc.(*Env).Exec(0xc0023d43f0, 0xc0024f44c0, 0xc002890dc0, 0xc0015cfc90, 0x2, 0x2, 0x0, 0x369159db11c7b200, 0x95ee40, 0xc001e3e050)
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/ipc/ipc.go:282 +0x495
main.(*Proc).executeRaw(0xc0031b1a40, 0xc0024f44c0, 0xc002890dc0, 0x3, 0x0)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:297 +0x228
main.(*Proc).triageInput(0xc0031b1a40, 0xc0039981e0)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:126 +0x3f4
main.(*Proc).loop(0xc0031b1a40)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:74 +0x16a
created by main.main
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:280 +0x13f8
D0206 03:15:17.420605       1 task_signals.go:467] [  33] Notified of signal 23
D0206 03:15:17.420801       1 task_signals.go:467] [  36] Notified of signal 23
D0206 03:15:17.420989       1 task_signals.go:179] [  33] Restarting syscall 202 after errno 512: interrupted by signal 23
D0206 03:15:17.421045       1 task_signals.go:179] [  36] Restarting syscall 202 after errno 512: interrupted by signal 23
D0206 03:15:17.421061       1 task_signals.go:220] [  36] Signal 23: delivering to handler
D0206 03:15:17.421023       1 task_signals.go:220] [  33] Signal 23: delivering to handler
D0206 03:15:17.422354       1 task_signals.go:467] [  36] Notified of signal 23
D0206 03:15:17.422483       1 task_signals.go:179] [  36] Restarting syscall 202 after errno 512: interrupted by signal 23
D0206 03:15:17.422542       1 task_signals.go:220] [  36] Signal 23: delivering to handler
D0206 03:15:17.425390       1 task_signals.go:467] [  33] Notified of signal 23
D0206 03:15:17.425783       1 task_signals.go:467] [  36] Notified of signal 23
D0206 03:15:17.426051       1 task_signals.go:179] [  33] Restarting syscall 202 after errno 512: interrupted by signal 23
D0206 03:15:17.426076       1 task_signals.go:220] [  33] Signal 23: delivering to handler
D0206 03:15:17.426392       1 task_signals.go:179] [  36] Restarting syscall 202 after errno 512: interrupted by signal 23
D0206 03:15:17.426412       1 task_signals.go:220] [  36] Signal 23: delivering to handler
D0206 03:15:17.427138       1 task_signals.go:467] [  33] Notified of signal 23
D0206 03:15:17.427210       1 task_signals.go:467] [  36] Notified of signal 23
D0206 03:15:17.427295       1 task_signals.go:179] [  33] Restarting syscall 202 after errno 512: interrupted by signal 23
D0206 03:15:17.427308       1 task_signals.go:220] [  33] Signal 23: delivering to handler
D0206 03:15:17.428211       1 task_signals.go:179] [  36] Restarting syscall 202 after errno 512: interrupted by signal 23
D0206 03:15:17.428236       1 task_signals.go:220] [  36] Signal 23: delivering to handler
D0206 03:15:17.428637       1 task_signals.go:467] [  33] Notified of signal 23
D0206 03:15:17.428709       1 task_signals.go:467] [  36] Notified of signal 23
D0206 03:15:17.429042       1 task_signals.go:179] [  33] Restarting syscall 202 after errno 512: interrupted by signal 23
D0206 03:15:17.429058       1 task_signals.go:220] [  33] Signal 23: delivering to handler
D0206 03:15:17.429349       1 task_signals.go:179] [  36] Restarting syscall 202 after errno 512: interrupted by signal 23
D0206 03:15:17.429364       1 task_signals.go:220] [  36] Signal 23: delivering to handler
D0206 03:15:17.433348       1 task_signals.go:467] [  33] Notified of signal 23
D0206 03:15:17.433438       1 task_signals.go:467] [  36] Notified of signal 23
D0206 03:15:17.433531       1 task_signals.go:179] [  33] Restarting syscall 202 after errno 512: interrupted by signal 23
D0206 03:15:17.433546       1 task_signals.go:220] [  33] Signal 23: delivering to handler
D0206 03:15:17.433877       1 task_signals.go:179] [  36] Restarting syscall 202 after errno 512: interrupted by signal 23
D0206 03:15:17.433896       1 task_signals.go:220] [  36] Signal 23: delivering to handler
panic: wd changed: "/tmp" -> "(unreachable)/"