This is a note to let you know that I've just added the patch titled
objtool: Fix memory leak in create_static_call_sections()
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
objtool-fix-memory-leak-in-create_static_call_sectio.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b029bcc61e581893a3fc436ec0d43c1176c5bab8
Author: Miaoqian Lin <linmq006@xxxxxxxxx>
Date: Mon Dec 5 12:06:42 2022 +0400
objtool: Fix memory leak in create_static_call_sections()
[ Upstream commit 3da73f102309fe29150e5c35acd20dd82063ff67 ]
strdup() allocates memory for key_name. We need to release the memory in
the following error paths. Add free() to avoid memory leak.
Fixes: 1e7e47883830 ("x86/static_call: Add inline static call implementation for x86-64")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221205080642.558583-1-linmq006@xxxxxxxxx
Cc: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index b1a5f658673f0..ea1e7cdeb1b34 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -688,6 +688,7 @@ static int create_static_call_sections(struct objtool_file *file)
if (strncmp(key_name, STATIC_CALL_TRAMP_PREFIX_STR,
STATIC_CALL_TRAMP_PREFIX_LEN)) {
WARN("static_call: trampoline name malformed: %s", key_name);
+ free(key_name);
return -1;
}
tmp = key_name + STATIC_CALL_TRAMP_PREFIX_LEN - STATIC_CALL_KEY_PREFIX_LEN;
@@ -697,6 +698,7 @@ static int create_static_call_sections(struct objtool_file *file)
if (!key_sym) {
if (!opts.module) {
WARN("static_call: can't find static_call_key symbol: %s", tmp);
+ free(key_name);
return -1;
}
