syz_mount_image$vfat(&(0x7f0000000080), &(0x7f0000000100)='./file0\x00', 0x8100000, 0x0, &(0x7f00000004c0), 0x0, &(0x7f0000000140)=ANY=[@ANYBLOB='utf8=0'], 0x0)
panic: bad group arg size 24, should be <= 0 for &prog.GroupArg{ArgCommon:prog.ArgCommon{ref:0x2de, dir:0x0}, Inner:[]prog.Arg{}} type "array"

goroutine 11 [running]:
github.com/google/syzkaller/prog.foreachArgImpl({0x8b4158, 0xc014ff52e0}, 0xc015acff40, 0xc0150d5d00)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:157 +0x5d9
github.com/google/syzkaller/prog.foreachArgImpl({0x8b4198, 0xc014ffdd10}, 0xc015acff40, 0xc0034f5d00)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:164 +0x337
github.com/google/syzkaller/prog.ForeachArg(0xc015a80be0, 0x0)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:123 +0x105
github.com/google/syzkaller/prog.(*Prog).MutateWithHints(0xc010dbe080, 0x0, 0xc014ffc7e0, 0xc0034f5d80)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/hints.go:78 +0xaa
main.(*Proc).executeHintSeed(0xc010dbe080, 0x4d6, 0x0)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:248 +0xd2
main.(*Proc).smashInput(0xc010dbe080, 0xc013177f60)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:214 +0x88
main.(*Proc).loop(0xc010dbe080)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:78 +0x125
created by main.main
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:307 +0x15a5