From patchwork Mon Nov 25 10:50:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Christian_G=C3=B6ttsche?= X-Patchwork-Id: 13884806 Received: from server02.seltendoof.de (server02.seltendoof.de [168.119.48.163]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 550DF192D91; Mon, 25 Nov 2024 10:50:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=168.119.48.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732531835; cv=none; b=afoBWcW8gh0OAKvfHmC4UhvPq/avQea8ElBVpyjEdc9QPkUsvd639vnaQbCxDxcVrUhRs5BRLWMRNiYEsfYtPouDcZC59Ji3wd4r1aR59G18wsk0pq0JsPTCowoNf686goEoQyYl7490a0wqYb49H06mVIsLzhh6rM+4qE3TB78= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732531835; c=relaxed/simple; bh=aUW89A+cMdYHpkt+oiZdLB+dni4vxT9wWinfiQBYBPY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=rZn+ufbeiEti+uUHZpomVVKiZlQwFhvkrM8OFjwgjSigXEr2RIQSqDR4YjD451y5G7x5ikO8xVzT12xkk9GQtQvvIz4EBPUch9X8KivkcwtVyeRkKfvd21E3miAxPTu3vYif+ve8OROJV7NWXLJcBIcZzmDU8XHzPzq0wlXTtdE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=seltendoof.de; spf=pass smtp.mailfrom=seltendoof.de; dkim=pass (2048-bit key) header.d=seltendoof.de header.i=@seltendoof.de header.b=SavjqTM1; arc=none smtp.client-ip=168.119.48.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=seltendoof.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=seltendoof.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=seltendoof.de header.i=@seltendoof.de header.b="SavjqTM1" From: =?utf-8?q?Christian_G=C3=B6ttsche?= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=seltendoof.de; s=2023072701; t=1732531832; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=dzS3rptQpBOYwpq3ixwqSK/AVNS+4t/jVRKj+6wTiiE=; b=SavjqTM1fnGwsO0LH8q7sS8uuh6zvh5BCPYzfvx4b4tkBkdUZc/RBoflAVT9o0MJX+bL3D wrdP5gJpVbflM24qtzzozxmVdEEFEUXY7R00xUXQsmJ4fVDn8XoQ8j9H7UAca4Bq0TTvmR Sjc58f8OE6umSRjPdQlpfloYoqiqICVSlo3+3B3JJNvIq/TKCS8mmKnpj6F44v/IiSqtm1 i7t1ZTHk6l7NtVuWndh5Re3cu6DoIdKeMZikornUmOkW5SLxltbjPgNZjDCU3RXtOFlPqO H3no0I7ukjdOZZ3178Ha53Y0MWneKlQq1z8c6S2XorSEftCqNSIcCeoPugN8ZQ== To: Cc: =?utf-8?q?Christian_G=C3=B6ttsche?= , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , =?utf-8?q?Micka=C3=ABl_?= =?utf-8?q?Sala=C3=BCn?= , =?utf-8?q?G=C3=BCnther_Noack?= , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, llvm@lists.linux.dev Subject: [PATCH] trace: constify string literal data member Date: Mon, 25 Nov 2024 11:50:25 +0100 Message-ID: <20241125105028.42807-1-cgoettsche@seltendoof.de> Reply-To: cgzones@googlemail.com Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Christian Göttsche The name member of the struct trace_event_call is assigned with generated string literals; declare them pointer to read-only. Reported by clang: security/landlock/syscalls.c:179:1: warning: initializing 'char *' with an expression of type 'const char[34]' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers] 179 | SYSCALL_DEFINE3(landlock_create_ruleset, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 180 | const struct landlock_ruleset_attr __user *const, attr, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 181 | const size_t, size, const __u32, flags) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/syscalls.h:226:36: note: expanded from macro 'SYSCALL_DEFINE3' 226 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/syscalls.h:234:2: note: expanded from macro 'SYSCALL_DEFINEx' 234 | SYSCALL_METADATA(sname, x, __VA_ARGS__) \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/syscalls.h:184:2: note: expanded from macro 'SYSCALL_METADATA' 184 | SYSCALL_TRACE_ENTER_EVENT(sname); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/syscalls.h:151:30: note: expanded from macro 'SYSCALL_TRACE_ENTER_EVENT' 151 | .name = "sys_enter"#sname, \ | ^~~~~~~~~~~~~~~~~ Signed-off-by: Christian Göttsche --- include/linux/trace_events.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h index 016b29a56c87..423104db6f93 100644 --- a/include/linux/trace_events.h +++ b/include/linux/trace_events.h @@ -359,7 +359,7 @@ struct trace_event_call { struct list_head list; struct trace_event_class *class; union { - char *name; + const char *name; /* Set TRACE_EVENT_FL_TRACEPOINT flag when using "tp" */ struct tracepoint *tp; };