From: Austin Kim <austindh.kim@gmail.com>
To: linux@armlinux.org.uk, allison@lohutok.net, info@metux.net,
matthias.schiffer@ew.tq-group.com
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, austindh.kim@gmail.com
Subject: [PATCH] ARM: module: Drop 'rel->r_offset < 0' always false statement
Date: Wed, 11 Sep 2019 13:54:08 +0900 [thread overview]
Message-ID: <20190911045408.GA62424@LGEARND20B15> (raw)
Since rel->r_offset is declared as Elf32_Addr,
this value is always non-negative.
typedef struct elf32_rel {
Elf32_Addr r_offset;
Elf32_Word r_info;
} Elf32_Rel;
typedef __u32 Elf32_Addr;
typedef unsigned int __u32;
Drop 'rel->r_offset < 0' statement which is always false.
Signed-off-by: Austin Kim <austindh.kim@gmail.com>
---
arch/arm/kernel/module.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index deef17f..0921ce7 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -92,7 +92,7 @@ apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
sym = ((Elf32_Sym *)symsec->sh_addr) + offset;
symname = strtab + sym->st_name;
- if (rel->r_offset < 0 || rel->r_offset > dstsec->sh_size - sizeof(u32)) {
+ if (rel->r_offset > dstsec->sh_size - sizeof(u32)) {
pr_err("%s: section %u reloc %u sym '%s': out of bounds relocation, offset %d size %u\n",
module->name, relindex, i, symname,
rel->r_offset, dstsec->sh_size);
--
2.6.2
next reply other threads:[~2019-09-11 4:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-11 4:54 Austin Kim [this message]
2019-09-11 9:40 ` [PATCH] ARM: module: Drop 'rel->r_offset < 0' always false statement Russell King - ARM Linux admin
2019-09-11 11:42 ` Austin Kim
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190911045408.GA62424@LGEARND20B15 \
--to=austindh.kim@gmail.com \
--cc=allison@lohutok.net \
--cc=info@metux.net \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=matthias.schiffer@ew.tq-group.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).