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=1794060617; b=jF5dleSpY0JH0pqEi+j5EePSh1VnCc6c1Gsx7Nl2Nh5IZpsmpn57FT7kwvB4D/BZ8BCg IQWd1czPGcr1zTMr4Q4TGdYL+U7CYw/pPtcV+e6NOW+Q0izRuy86VX3Xh+GhDw6Xv1Uq4 xOcEekllHnG9wrog6bAQEYTlbelIH9nfZt1b75V1Y5l5rs/twRex5UTXlki5O/xneeca1 dGKHB0J6bBIfyZBvLppByC3NngmsUWiPRSHHMmKjlvQdq2bIGBPKzf9sE87sYHSKTbZxM mkVhuW2IClxmha42VpKTEMXCXfwIVZCkxsgHPNctgtGfGvr/C58eeQ3tt6q8RXdz6/g== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794060617; 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=wQHC2zcFpTJkmhpB/uYp3kSZ+TaUCwp2j6sP2GL+TC8=; b=QLv9B91xHcyNmh1jQ8KEoaCwE4N6pa9rXzr1Hk+uuIuTNNQuGPbRgUxaJqr+u3vcUi18 JT/HfcOd3IWnhLJRitZWEdKtBqP+hFJpwbhb/Erxc70Mz+WT+i9tv8epsVE099EbRtA8y C1BF5GsZxB67sB19MzjKHOfK6+XJj3bq7e29DYDlZNRMavitlh4R5/OA1Y8H7n+WuXGPl szmCqtmobwB9oVYO7QUzUQmgxgNXlzJO5QOBfJUTjsubAN9RQUVq2N0L8DLmX7BNTPsX6 Su/pzFI0VPBZTybTTcn7UuSCBCaqMQwBP019LSPShnivPrOcCX8ZeGxikTu61u4AczQ== 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=Bdayf+ds; 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 827D2606A326; Sat, 7 Nov 2026 14:10:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=Bdayf+ds Received: by smtp.kernel.org (Postfix) with ESMTPSA id 211A11F008A2; Sat, 7 Nov 2026 14:10:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794060617; bh=wQHC2zcFpTJkmhpB/uYp3kSZ+TaUCwp2j6sP2GL+TC8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Bdayf+dsI+QZ909IFWVWh257l3WU1OSY9eWsGC9c507EtLbzn9jaM3QrSDXU0w8KJ Rij/XilXzI9BzF+jJxUE7MUdZXCt0vuwTadXQbrhf0j+SJ+hXbo4ad/GA5jA+I+9mB 57ZbJ0fyfC0UmItgf9RfvumfDycoFYHFilM7OM6Y= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Eric Huang , Philip Yang , Alex Deucher , Sasha Levin Subject: [PATCH 6.12 0066/1536] drm/amdkfd: add sanity check in svm_range_is_valid Date: Sat, 7 Nov 2026 08:34:42 -0500 Message-ID: <20261107134959.521023126@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134957.653319350@linuxfoundation.org> References: <20261107134957.653319350@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org 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: Eric Huang [ Upstream commit aa7e29cf9a37092cf5057a612ee09f28df20258f ] to prevent svm range to be overflow or underflow. Signed-off-by: Eric Huang Reviewed-by: Philip Yang Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index 08fcc94c0a2c3..0b86da7d7c502 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c @@ -3409,7 +3409,13 @@ svm_range_is_valid(struct kfd_process *p, uint64_t start, uint64_t size) unsigned long start_unchg = start; start <<= PAGE_SHIFT; - end = start + (size << PAGE_SHIFT); + + if (size == 0) + return -EINVAL; + + if (check_add_overflow(start, size << PAGE_SHIFT, &end)) + return -EOVERFLOW; + do { vma = vma_lookup(p->mm, start); if (!vma || (vma->vm_flags & device_vma)) -- 2.53.0