open(&(0x7f0000000040)='./file0\x00', 0x141042, 0x0)
syz_mount_image$ext4(&(0x7f0000000000)='ext4\x00', &(0x7f0000000100)='./file0\x00', 0x8100000, 0x1, &(0x7f0000000300)=[{&(0x7f0000012b00)="ed41000000040000d7f4655fd7f4655fd7f4655f0000000000003f0002", 0x1d, 0x8c80}], 0x0, &(0x7f0000013800), 0x0)
panic: bad group arg size 72, should be <= 0 for &prog.GroupArg{ArgCommon:prog.ArgCommon{ref:0x2de, dir:0x0}, Inner:[]prog.Arg{}} type "array"

goroutine 14 [running]:
github.com/google/syzkaller/prog.foreachArgImpl({0x8b4538, 0xc018b70fa0}, 0xc00b2ba840, 0xc002f1fd00)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:157 +0x5d9
github.com/google/syzkaller/prog.foreachArgImpl({0x8b4578, 0xc00bb86540}, 0xc00b2ba840, 0xc002f1fd00)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:164 +0x337
github.com/google/syzkaller/prog.ForeachArg(0xc00aa6bea0, 0x0)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:123 +0x105
github.com/google/syzkaller/prog.(*Prog).MutateWithHints(0xc0180b0240, 0x1, 0xc00b2d82a0, 0xc002f1fd80)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/hints.go:78 +0xaa
main.(*Proc).executeHintSeed(0xc0180b0240, 0x65e4a0, 0x1)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:248 +0xd2
main.(*Proc).smashInput(0xc0180b0240, 0xc017bc1470)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:214 +0x88
main.(*Proc).loop(0xc0180b0240)
	/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