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=1793829687; b=kWHBJosUK+obLD/GejFVzrud97mkG9Z2mYtHJkMaSxXiLGr2a/3CvJkN1CZJJj0Yk1oO DxBBDYO1kWddeMDWA4BEeNeLI/gNM1oanktHl3SuEmNHEe3LtoSyob/OxtRohlhWZ0jN4 1P/tOmSW3ldPXv2OBMGnJMtdPTUBdFtxmJGDpN6vsXloMv0QQQPGWSDTEXzZeO+XUhzdT /F72/TXqmXyZRmLXRgzgkKcAspQC1Hr+aXTv5RNAtDexVHc6BI3hmu78NwY9FOSeQ7R3I n86CmTcL60B0+e3z8YIRL9uls+S8NRzyfx6Rm4cESCdRwIDZWYR73TOpBE5jzRrTSvw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793829687; 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=JYjqoXGiD3WqpmiifQv7K0IoVt0hL9t7amdJ7GShYOE=; b=fzS7qVdXeZzwk4NHCgX0p6IDiMwXXakxsCxsC6b/h6Uyv6u51tT0+2BHFUauxQSoqQr0 gU9TrFzieVXiGTYJJWm68j/VZ2LrkMhtTjJrD02CKGzw4pIR/cXQ8Klr+0Oez4Qw+sauD y1bXoE61ORY+/ecLXAw39y9s5aWycm2RZsMcON6rOxDfaBDzdX79yO0s+nGlZnvYbdJnS YegbZv3mdtVLsUEnc41Ww0Zlz7P8Eo3gMKSjjCnChgnHGwBJmnTysLx84jzrSK03NZIVE UCKjwWFq0smNsYAflOrOI2ZjrYxPCnGDJ1MWyZ8oJTSmVbRffsCV19lyA/fsi1EsfWw== 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=p3OZpVaa; 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 9BEE2606EE91; Wed, 4 Nov 2026 22:01:27 +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=p3OZpVaa Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2DF951F0093A; Wed, 4 Nov 2026 22:01:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793829687; bh=JYjqoXGiD3WqpmiifQv7K0IoVt0hL9t7amdJ7GShYOE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=p3OZpVaamh8C7dtcQ4e+8F3efZYASSilBwup6LO3UtebonOwSHGCFw4AaS/eMOl7m Zo3oGtNzjBj+AvkPpieW7FBOzcGWBCwCJ7mjfgyUkZa8r3Ved1dNJP5ZEQyODu6CNk bWiT5z+fbGAVK2iGlkjS7UiZZBj7jEKxrAGz/mvA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Christian Borntraeger , Heiko Carstens , Vasily Gorbik , Sasha Levin Subject: [PATCH 6.18 0280/1005] s390/mm: Fix handling of vmalloc area in do_secure_storage_access() Date: Wed, 4 Nov 2026 16:00:13 -0500 Message-ID: <20261104211051.734619161@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261104211043.516122098@linuxfoundation.org> References: <20261104211043.516122098@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: Heiko Carstens [ Upstream commit a2e5a9d853e015bc876399eb18435aa88101c60a ] Secure storage access exceptions in vmalloc area need to be handled separately since virt_to_phys() does not work on such addresses. Given that there cannot be a valid access let such exceptions fail immediately. The kernel will either fixup or crash. Tested-by: Christian Borntraeger Signed-off-by: Heiko Carstens Reviewed-by: Christian Borntraeger > --- Signed-off-by: Vasily Gorbik Signed-off-by: Sasha Levin --- arch/s390/mm/fault.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index 46e5748b5b1b3..9d7d3ef99fc16 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -433,6 +433,8 @@ void do_secure_storage_access(struct pt_regs *regs) panic("Unexpected PGM 0x3d with TEID bit 61=0"); } if (is_kernel_fault(regs)) { + if (is_vmalloc_addr((void *)addr)) + return handle_fault_error_nolock(regs, 0); folio = virt_to_folio((void *)addr); if (unlikely(!folio_try_get(folio))) return; -- 2.53.0