From: Rolf Eike Beer <eb@emlix.com>
To: Alexander Viro <viro@zeniv.linux.org.uk>,
Eric Biederman <ebiederm@xmission.com>,
Kees Cook <keescook@chromium.org>
Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] binfmt_elf: simplify error handling in load_elf_phdrs()
Date: Wed, 19 Oct 2022 09:52:16 +0200 [thread overview]
Message-ID: <4137126.7Qn9TF0dmF@mobilepool36.emlix.com> (raw)
The err variable was the same like retval, but capped to <= 0. This is the
same as retval as elf_read() never returns positive values.
Signed-off-by: Rolf Eike Beer <eb@emlix.com>
---
fs/binfmt_elf.c | 10 ++--------
1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index cfd5f7ad019d..1fdc92e95170 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -462,7 +462,7 @@ static struct elf_phdr *load_elf_phdrs(const struct elfhdr *elf_ex,
struct file *elf_file)
{
struct elf_phdr *elf_phdata = NULL;
- int retval, err = -1;
+ int retval = -1;
unsigned int size;
/*
@@ -484,15 +484,9 @@ static struct elf_phdr *load_elf_phdrs(const struct elfhdr *elf_ex,
/* Read in the program headers */
retval = elf_read(elf_file, elf_phdata, size, elf_ex->e_phoff);
- if (retval < 0) {
- err = retval;
- goto out;
- }
- /* Success! */
- err = 0;
out:
- if (err) {
+ if (retval) {
kfree(elf_phdata);
elf_phdata = NULL;
}
--
2.37.3
--
Rolf Eike Beer, emlix GmbH, https://www.emlix.com
Fon +49 551 30664-0, Fax +49 551 30664-11
Gothaer Platz 3, 37083 Göttingen, Germany
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emlix - smart embedded open source
next reply other threads:[~2022-10-19 7:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-19 7:52 Rolf Eike Beer [this message]
2022-10-25 22:24 ` [PATCH] binfmt_elf: simplify error handling in load_elf_phdrs() Kees Cook
-- strict thread matches above, loose matches on Subject: below --
2020-11-04 7:42 Rolf Eike Beer
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