From a1368eaea058e451d20ea99ca27e72d9df0d16dd Mon Sep 17 00:00:00 2001 From: Miaoqian Lin Date: Mon, 5 Dec 2022 12:06:42 +0400 Subject: [PATCH] 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 Signed-off-by: Ingo Molnar Link: https://lore.kernel.org/r/20221205080642.558583-1-linmq006@gmail.com Cc: Josh Poimboeuf Cc: Peter Zijlstra Signed-off-by: Sasha Levin --- tools/objtool/check.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 5c4190382a51..9a0a54194636 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -572,6 +572,7 @@ 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; @@ -581,6 +582,7 @@ static int create_static_call_sections(struct objtool_file *file) if (!key_sym) { if (!module) { WARN("static_call: can't find static_call_key symbol: %s", tmp); + free(key_name); return -1; }