From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta1.migadu.com (out-69.mta1.migadu.com [95.215.58.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DDE23274641 for ; Wed, 19 Aug 2026 04:49:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787114991; cv=none; b=jYNptujgxUVWWOOkklYENaUjT7F9Nbh+nXMv4O/YD6g5wAGLHDAROZnQY3hbROqTcl2ibmQxkXoYk1S7u2AkyH76ncdxvuAKFRYiVdOd8fesZGUvS2v4+u1/wRu3hQPB6ywMCxzyuva00qpImi7kPUWJsAIb43fIrP0rXx0LYD0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787114991; c=relaxed/simple; bh=vK1GcmrCM2HBb97Fmyp4VUN3T6osFaaIJirq/q1oYnc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=YvTrTOMwCI/ixz4fQ2y/RxUHPFPdBWgy/tk7nN/Yw3F53KzxcydALWeOnvkNNpygEk0Zyuywbwz2/XnA7wCeLQky2kNi8D0Ncv/JKP1hT/140SlDSu6BHRs/Tnm4JUG/V+TDD2Xi2JuWYnl/7T97n4vZys626KFAvElf2VKQoqo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=HnxePEOV; arc=none smtp.client-ip=95.215.58.69 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="HnxePEOV" X-Envelope-To: patches@lists.linux.dev DKIM-Signature: a=rsa-sha256; bh=vK1GcmrCM2HBb97Fmyp4VUN3T6osFaaIJirq/q1oYnc=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1787114984; v=1; x=1787719784; b=HnxePEOV2C150FVIoS+/Q4TBFhqju3b2Uu6s2beaV5N1m2UyIAn7grnkV1hjlh9axW673YdI 2Jh3NTyOkxKTRYHFSaS+DUGnFNIiMIJff3KfD6x4VQ6M6I3S9DZliCwvu17nwdLNAE7vy5sC6+J yo/KkKMii26TnDRjwEspj+KI= X-Envelope-To: patches@lists.linux.dev Received: from linux.dev (52.89.24.131) by smtp.migadu.com with ESMTPS id 30761f6d58e5e484; Wed, 19 Aug 2026 04:49:44 +0000 X-Migadu-Flow: FLOW_OUT Date: Wed, 19 Aug 2026 04:49:37 +0000 From: "Jose Fernandez (Anthropic)" To: Greg Kroah-Hartman Cc: stable@vger.kernel.org, Steven Rostedt , Masami Hiramatsu , Harshit Mogalapalli , patches@lists.linux.dev Subject: Re: [PATCH 6.18 227/250] eventfs: Use children field for rcu head and add memory barriers Message-ID: References: <20260817132536.466235697@linuxfoundation.org> <20260817132545.791907087@linuxfoundation.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260817132545.791907087@linuxfoundation.org> Hi Greg, Harshit's report on the 6.12 copy of this patch applies to 6.18 as well: https://lore.kernel.org/stable/24644fdf-54f1-470c-9183-8f5c420c760f@oracle.com/ 6.18.y also lacks 4d9b262031ff ("eventfs: Simplify code using guard()s"), so the new direct return leaks the SRCU read lock. The same fixup works here. Lockdep confirms the leak on 6.18.44 with the two eventfs patches applied, and is quiet with the fixup. This one is also from AI-assisted review, which I checked. 6.6 needs the same fixup too. 7.1 has 4d9b262031ff, so it is fine. Thanks, Jose