From: Khaled ROMDHANI <khaledromdhani216@gmail.com>
To: peterz@infradead.org, jpoimboe@redhat.com, jbaron@akamai.com,
rostedt@goodmis.org, ardb@kernel.org, tglx@linutronix.de,
mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com
Cc: Khaled ROMDHANI <khaledromdhani216@gmail.com>,
linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH-next] x86/kernel: Fix unchecked return value
Date: Sat, 15 May 2021 21:22:12 +0100 [thread overview]
Message-ID: <20210515202212.24836-1-khaledromdhani216@gmail.com> (raw)
From the coverity scan analysis, the return value from
insn_decode_kernel is not checked. It is a macro constructed
from the insn_decode function which may fail and return
negative integer. Fix this by explicitly checking the
return value.
Addresses-Coverity: ("Unchecked return value")
Signed-off-by: Khaled ROMDHANI <khaledromdhani216@gmail.com>
---
arch/x86/kernel/jump_label.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/jump_label.c b/arch/x86/kernel/jump_label.c
index a762dc1c615e..bf0ea003b6e7 100644
--- a/arch/x86/kernel/jump_label.c
+++ b/arch/x86/kernel/jump_label.c
@@ -23,7 +23,7 @@ int arch_jump_entry_size(struct jump_entry *entry)
{
struct insn insn = {};
- insn_decode_kernel(&insn, (void *)jump_entry_code(entry));
+ WARN_ON(insn_decode_kernel(&insn, (void *)jump_entry_code(entry)));
BUG_ON(insn.length != 2 && insn.length != 5);
return insn.length;
--
2.17.1
next reply other threads:[~2021-05-15 20:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-15 20:22 Khaled ROMDHANI [this message]
2021-05-15 20:36 ` [PATCH-next] x86/kernel: Fix unchecked return value Borislav Petkov
2021-05-15 20:51 ` Colin Ian King
2021-05-16 13:17 ` Khaled Romdhani
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