[PATCH -mm] elf: fixup error path in PT_INTERP case

From: Alexey Dobriyan
Date: Sat Mar 30 2019 - 07:20:40 EST


Fix broken error path if PT_INTERP filename can't be opened for execution.

Reported-by: syzbot+0d1fcd7268b21baced4a@xxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
---

fold into elf-free-pt_interp-filename-asap.patch

fs/binfmt_elf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -777,7 +777,7 @@ static int load_elf_binary(struct linux_binprm *bprm)
kfree(elf_interpreter);
retval = PTR_ERR(interpreter);
if (IS_ERR(interpreter))
- goto out_free_dentry;
+ goto out_free_ph;

/*
* If the binary is not readable then enforce