mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1800003, 0x10, r1, 0x0)
preadv(r1, &(0x7f0000000280), 0x18, 0xd9f, 0x0)
ioctl$UI_BEGIN_FF_ERASE(0xffffffffffffffff, 0xc00c55ca, &(0x7f0000000040)={0x7, 0x10001})
write$bt_hci(r0, &(0x7f0000000040)=ANY=[], 0x7)
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x28 pc=0x56ab4f]

goroutine 49 [running]:
github.com/google/syzkaller/prog.clone(0x987e40, 0x987e00, 0xc008515e38, 0x987d40, 0xc01766da40)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:71 +0x60f
github.com/google/syzkaller/prog.(*Prog).Clone(0xc019e07480, 0xc0280fa2d0)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:20 +0x314
main.(*Proc).loop(0xc02ae03000)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:94 +0x379
created by main.main
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:295 +0x152f