From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792774071; b=TqgvHof98nlv46N9WsvUZCQt/bnnWfv1pxQPsU2NZPLXisvsAUzEjKCId+XzI1Qqct6D CPfDeJ5rITObK6K5xAIknr1LrTE4aNUH7A7Jg393ILdAFXTsi/ExBm4ITsItnowTfRkkp nr92S/Cfu0NBUx9A7R+dJoc5XQ4X2TykH/k/R301AStbR2+gp6R1Li8iA4KEOG2NKBwZy etUZGOnwM4ELYiKEz9qr0w1w94G9aweXvEwCwF8arNp8d+WVXw4/Vj4VJdSy3BmcoyAyU SGouLEuAdheEXNBrv0vXtstkdiWdxjsGU9I6mGS2xs/Ehu/bvf1jB+PdeShUm8B6InA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792774071; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=Q0N7TlE+MVhlxSQe3v0F8czSaJEBBFMpv2mWCXrRxDY=; b=hG8oOU1Iz2A23DlhnfbHF3FArRKBLgl0tFGKXEAIgVreHttox87F5x5BC5qlgMAOQ4pU cZ7T+bSTo60awZm1E4YoTMsZLYSTfxW2LhdqRXQt+SYzTe0QAwnR07nh50WoeYaYyDlX2 pGwjXqqBgjQusMcewZNQ/xxBXUQLmB9RoGSL0FDC+eb23nkDQlSUQhT+dXOdDVeMzyuDy 3HvnFQr/FMkOnY7b8PZO0nvoD+5xMJpvknEdSdc8Tv6Kdp+Amx4sKvVqwi6qlb3jXBADf k2KbGSzploLAuHipSGA723JKFar8EwWe7S62EOS2cbuZoP57yIsK2iArtJuqIhndbGA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=estHrNC7; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7E340606A31E; Fri, 23 Oct 2026 16:47:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=estHrNC7 Received: by smtp.kernel.org (Postfix) with ESMTPSA id CC48B1F01825; Fri, 23 Oct 2026 16:47:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792774071; bh=Q0N7TlE+MVhlxSQe3v0F8czSaJEBBFMpv2mWCXrRxDY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=estHrNC7eTM48ZtE+j7clUXgPLtempaii+OvZtpDtOgOEtdV8EEna9k22u5IuKerq G3/NzoIyRYDePZelo0CBTuI2T97NzkLGu+fubs5MOeI7M1z0T6rNd+cV5zBHAOyzPG OL/G0Vgn4mL+y4fOzPJjojFzRl2Eo6I5t+emgYDA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, David Carlier , Steven Rostedt Subject: [PATCH 6.18 112/193] tracing: Take trace_types_lock when dropping the buffer_meta reference Date: Fri, 23 Oct 2026 18:36:29 +0200 Message-ID: <20261023163716.857121087@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261023163714.201276352@linuxfoundation.org> References: <20261023163714.201276352@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Carlier commit 2afe7575fb24b9d0476ae4a3a9862f7997216aa4 upstream. tracing_buffer_meta_open() drops the trace_array reference with __trace_array_put() when ring_buffer_meta_seq_init() fails, without holding trace_types_lock. Use trace_array_put() like every other open error path. Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260914133506.4865-2-devnexen@gmail.com Fixes: 950032ffcee7 ("ring-buffer: Add output of ring buffer meta page") Signed-off-by: David Carlier Signed-off-by: Steven Rostedt Signed-off-by: Greg Kroah-Hartman --- kernel/trace/trace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -7127,7 +7127,7 @@ static int tracing_buffer_meta_open(stru ret = ring_buffer_meta_seq_init(filp, tr->array_buffer.buffer, cpu); if (ret < 0) - __trace_array_put(tr); + trace_array_put(tr); return ret; }