| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20251103215244.2080638-1-xur@google.com> Date: Mon, 3 Nov 2025 21:52:43 +0000 From: xur@...gle.com To: Josh Poimboeuf <jpoimboe@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Rong Xu <xur@...gle.com> Cc: linux-kernel@...r.kernel.org, Sriraman Tallam <tmsriram@...gle.com>, Han Shen <shenhan@...gle.com>, Krzysztof Pszeniczny <kpszeniczny@...gle.com> Subject: [PATCH v2 1/2] objtool: fix the check for dead_end function with multiple sibliing calls From: Rong Xu <xur@...gle.com> If a function has multiple sibling calls, the dead_end check should only return true if all sibling call targets are also dead_end functions. Signed-off-by: Rong Xu <xur@...gle.com> Reviewed-by: Sriraman Tallam <tmsriram@...gle.com> Reviewed-by: Han Shen <shenhan@...gle.com> Reviewed-by: Krzysztof Pszeniczny <kpszeniczny@...gle.com> --- tools/objtool/check.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 9004fbc067693..c2ee3c3a84a62 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -314,7 +314,13 @@ static bool __dead_end_function(struct objtool_file *file, struct symbol *func, return false; } - return __dead_end_function(file, insn_func(dest), recursion+1); + /* + * A function can have multiple sibling calls. All of + * them need to be dead ends for the function to be a + * dead end too. + */ + if (!__dead_end_function(file, insn_func(dest), recursion+1)) + return false; } } base-commit: 6146a0f1dfae5d37442a9ddcba012add260bceb0 -- 2.51.2.997.g839fc31de9-goog
Powered by blists - more mailing lists