linux-kernel - [PATCH -mm] elf: fixup error path in PT

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Message-ID: <20190330111922.GA15258@avx2>
Date:   Sat, 30 Mar 2019 14:19:22 +0300
From:   Alexey Dobriyan <adobriyan@...il.com>
To:     akpm@...ux-foundation.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH -mm] elf: fixup error path in PT_INTERP case

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

Reported-by: syzbot+0d1fcd7268b21baced4a@...kaller.appspotmail.com
Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---

	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