From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 E3EC1195B1A; Thu, 15 Oct 2026 00:08:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792022933; cv=none; b=Jw0VXyyuYfqsMlR9KhTHte/EaSn/fhjOd3By0A/tAHIBhmC6CVAi6mhJlzlyVwR5fXpIuKbMBjKtnuuHJ/A05W0uukniANo1N5wk3rKN+4Rci5mucjQHHqgBhfXsD3JQObY0GzO8K1OTUe9uNXutf+o+uSGXA/BfWtoGX+0vVvY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792022933; c=relaxed/simple; bh=zQUCN1uQU3wfsLEkPomephOkww35JszLVZcHOC3a+tM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YOVH9DmgmGmysyytAOUOWQizjK6rS7PxtpNjXmex47iilUbSj+W7GQ8veGbhNmT+/psEGXiGqewSUdRoA2Y8/MwJpQtkTCSLVyFwo5Ktp5l/pdB/9wdWBsEMKh8D7CBVdqw/IvaXVV0+hJiwKRC7fyh0haVeMZ8rf9KuSR3hk7U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=orMOgKCJ; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="orMOgKCJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 893341F000C6; Thu, 15 Oct 2026 00:08:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792022932; bh=Sq/rXTk/gn6tq7h2+o8e+zay6B5MA1AX74U4UpqSY3I=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=orMOgKCJYmgNWEzZD3UFUUNwR4X5W/eze9n3FVdUanUArGsgT0WIgYIV0nhLQl08q MqTRdhJmZye3mm5nU9NguipqyzvOrV+YkKo+UWEI/xH00tMHuOxaz7bhBsWxNG/omN cA3CdTk0t3L6OuXgZeKT5MMZ7snQxuaKYGb9v5q4U4+xjMw5urXApTF+UlKfmChIEN olROFlXpay8VwKGjewvBZrQZcqiNPs/55bxVZCSjb7o1pocsJqReTaU9k2RWyFkpYd t0rUhDNA24symQJo5CQl1mAGp5ZWnZfx/NxaT5G3ReMbZfB7cVNMLA3VvHv+s4imL3 UxeG8UEIKcl7w== From: Sasha Levin To: Harshit Mogalapalli Cc: Sasha Levin , Greg Kroah-Hartman , stable@vger.kernel.org, patches@lists.linux.dev, Will Deacon , Mark Rutland , Catalin Marinas , Marc Zyngier , Mark Brown Subject: Re: [PATCH 6.12 285/497] arm64/fpsimd: signal: Consistently read FPSIMD context Date: Wed, 14 Oct 2026 20:08:40 -0400 Message-ID: <48c26a7dde7c421784031755@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: <20261013112907.864180619@linuxfoundation.org> <20261013112914.660106209@linuxfoundation.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit > If live FPSR/FPCR changed since the last save, the new size error can > leave older same-task values for the SIGSEGV handler. this patch adds a > size rejection route. The missing behavior comes from 929fa99b1215 Keeping this one in the queue. The new size rejection is only reachable with a corrupt frame size, and the flush-then-error pattern already exists in 6.12. Taking 929fa99b1215 and d3a181588df9 alone would break CONFIG_COMPAT, because signal32.c still calls fpsimd_signal_preserve_current_state(), so it would also need 3aa4d74438afa. That is not suitable for this RC. -- Thanks, Sasha