From patchwork Tue Mar 25 16:52:02 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Douglas Raillard X-Patchwork-Id: 14029284 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id EB0D225EF9B; Tue, 25 Mar 2025 16:52:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742921533; cv=none; b=kRsQz5HBuT5ilKAMSNbx/jVC50sQnCcaaZhCwLpPd9HJWaSkihlTAYX6n/wx5viRJupLNhBr4yiOW2D6cBtv87humtNlxM7aE72PZVdSfOmHrikzmCYIoIdzdKOTeqOuUSyKpXImLspO5R8NSFjFag0AnkJKsDOzGQkTA+i2Woo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742921533; c=relaxed/simple; bh=Y39VWxHkrAC8RkPlmkSzEZs6r44C0TGrIxEsOUrSBlQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=oO904RNYsC01D64SiM0mGrBTH+ulTsCp65So9QsJ0IjXroz4jfySe34IcHzk4eYbCbtgLSqPZKDsXLz193TJd5lLDDjLWdc5yjgO2/o3hP9jmkMsyW69+GM1kd3pTaDlGZn+7SA79n0f9VzJJs030jE9mEZx4WH3e+YcdSY8ezE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id CE1811756; Tue, 25 Mar 2025 09:52:15 -0700 (PDT) Received: from e132430.arm.com (unknown [10.57.85.102]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 9BFCE3F58B; Tue, 25 Mar 2025 09:52:08 -0700 (PDT) From: Douglas RAILLARD To: rostedt@goodmis.org Cc: douglas.raillard@arm.com, Masami Hiramatsu , Mathieu Desnoyers , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Subject: [PATCH v2] tracing: Fix synth event printk format for str fields Date: Tue, 25 Mar 2025 16:52:02 +0000 Message-ID: <20250325165202.541088-1-douglas.raillard@arm.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Douglas Raillard The printk format for synth event uses "%.*s" to print string fields, but then only passes the pointer part as var arg. Replace %.*s with %s as the C string is guaranteed to be null-terminated. Signed-off-by: Douglas Raillard --- kernel/trace/trace_events_synth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/trace_events_synth.c b/kernel/trace/trace_events_synth.c index e3f7d09e5512..f71e49cd35b0 100644 --- a/kernel/trace/trace_events_synth.c +++ b/kernel/trace/trace_events_synth.c @@ -305,7 +305,7 @@ static const char *synth_field_fmt(char *type) else if (strcmp(type, "gfp_t") == 0) fmt = "%x"; else if (synth_field_is_string(type)) - fmt = "%.*s"; + fmt = "%s"; else if (synth_field_is_stack(type)) fmt = "%s";