From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 859A22F9982; Tue, 26 Aug 2025 11:17:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756207062; cv=none; b=K6HcgoPzGxRJRO9yGggdfJfZOY5za1irx6aAm7CvwRaOKKE5kyN+MuYDonJaN4eCZKMYk2SbgOqNkMnuG72vopyw1iQYr4UVrYldnH6IM+iZ5v6vF+yyajF1uTFW4f+yQtXnG68fUnGtHoRYx/AsWuObLNhOxxGN9csIYUl2AA4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756207062; c=relaxed/simple; bh=6q/TKRakhhD3RQKdPDwX4BCMX+RSW7f0di/MuVzpY+E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=X0sDZYQLzypgiDY0+cjC0FTsKdhfUTKT1YmubmuIw/Iprl8abxR0BkTRuiX+Lmdi+6ytJt4rM//Wy6xaGy198j4eLa7NU5pXIUgfC9rDNsWKAe8G0cmXx9tzvmcwui/ZmYKLsbnj/2TYuGqzBMuAWFixPJkqO6bU2VoGobayI98= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ZLHs2YQ2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="ZLHs2YQ2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1E80CC4CEF4; Tue, 26 Aug 2025 11:17:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756207062; bh=6q/TKRakhhD3RQKdPDwX4BCMX+RSW7f0di/MuVzpY+E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZLHs2YQ2ppCO7RHa8r/T2lmB2s1POayhEAs5plg+1TDV1gv6pmghrspc8m7UG+GY+ hamDl6cfAkHVUaThIYwu4RuvNqDI9zdIiMguRSBz+nIyrJHemw4OiOuiOq0U3Ki1jB W8zD4Fk6EzCQ8bbPxImQMkqklLjukfNzvohX9Zi0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, "Masami Hiramatsu (Google)" Subject: [PATCH 6.16 036/457] tracing: fprobe-event: Sanitize wildcard for fprobe event name Date: Tue, 26 Aug 2025 13:05:20 +0200 Message-ID: <20250826110938.237136264@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110937.289866482@linuxfoundation.org> References: <20250826110937.289866482@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.16-stable review patch. If anyone has any objections, please let me know. ------------------ From: Masami Hiramatsu (Google) commit ec879e1a0be8007aa232ffedcf6a6445dfc1a3d7 upstream. Fprobe event accepts wildcards for the target functions, but unless user specifies its event name, it makes an event with the wildcards. /sys/kernel/tracing # echo 'f mutex*' >> dynamic_events /sys/kernel/tracing # cat dynamic_events f:fprobes/mutex*__entry mutex* /sys/kernel/tracing # ls events/fprobes/ enable filter mutex*__entry To fix this, replace the wildcard ('*') with an underscore. Link: https://lore.kernel.org/all/175535345114.282990.12294108192847938710.stgit@devnote2/ Fixes: 334e5519c375 ("tracing/probes: Add fprobe events for tracing function entry and exit.") Signed-off-by: Masami Hiramatsu (Google) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- kernel/trace/trace.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -2204,7 +2204,7 @@ static inline bool is_good_system_name(c static inline void sanitize_event_name(char *name) { while (*name++ != '\0') - if (*name == ':' || *name == '.') + if (*name == ':' || *name == '.' || *name == '*') *name = '_'; }