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=1793207648; b=qfLfBl9nbu6atIn03J3dnmmX1SMk/ZOin4TUM4bZ30ia90o9hLvbayj3isrG3jdJUsGl wtUgQSwar8uI1nXJvvR8v2PF8X040GDbhRagxWnGwoz3gVxO/k+AnnFg2JNnsUBg47TuC 2OhOemLAm39IfWWzo7PT2oNh0miyt0/wC75rptbFFiyO/XxgwUMzGUXsI16Kczr6wGObM M4u/kN5UOKgpC0ZIT+hOwK9fk+YOdN7fFK67Hq3XeiySY573EBSKgUYOvvdBuWwIwkvs2 3Zl6OIVfhbw3N/fLYeZJpP60PTwr6ChqP9NTLXPHLlicYr7F4hEvhxqoCi3RExzPZYA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793207648; 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=5+BgWPRmqd1sRFZezGfvOpaBOKus2+EdAuVG36goVAs=; b=VDWlPow0V8MGroM70nlPmuhg0/LGHJZl8PZeukVi3MmoS6nLbGYc5aQJpjwDS+OcsoDt 4Hiqr/46srjTvKslOLlR0CxlJeJ7eBHNLojgLoGvWCDezOcOZKu32WoAz6k0BRQd/tgVr 5pgwgvobhQZiZlr032Wlbc3PujBzuKN1cFIbUvPaARUDiNRtUZIikbFmsJrcoMLSSaABp m3FVbuydeeTTpL87tI3VgA5TBQviX0KjeDsAvFIIzxf+7W5Re4WCDet8RCYEjm4yvSmSt jq0zgMNAy648oDO+c+2PfYs/Ngd8Em4T/VLE4Yog5EvFMcaH7/KS0lV//GmMoMDqRGQ== 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=XndIutdj; 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 CB84B606A31A; Wed, 28 Oct 2026 17:14:07 +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=XndIutdj Received: by smtp.kernel.org (Postfix) with ESMTPSA id 281851F01828; Wed, 28 Oct 2026 17:14:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793207647; bh=5+BgWPRmqd1sRFZezGfvOpaBOKus2+EdAuVG36goVAs=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=XndIutdj7tUcXRWuXb6NYAD3dkskkKQoBb0GdO8IbAfM9rxpNU/qMs0rIN1SXUsQe mePz935Ccorzqo4EphJRfmgi2kOeU60rCsKd4nC8e1S3NT1WIVCXVutDsJdrwBIkPe wbvu8pCEvnWXFFgu14GqveuvGhKHA4lZJkmoxqQM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, David Carlier , Steven Rostedt Subject: [PATCH 6.12 091/247] tracing: Take trace_types_lock when dropping the buffer_meta reference Date: Wed, 28 Oct 2026 17:58:14 +0100 Message-ID: <20261028165949.548818887@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028165947.349197979@linuxfoundation.org> References: <20261028165947.349197979@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 6.12-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 @@ -6839,7 +6839,7 @@ 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; }