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=1794521374; b=zqbJ91yLKCLYfvgiEDCYqu33sDtr/yGCdT11OzjHiqeaS7Oe5vgYUwO/eR5iNebO1Gbh jKYjo7TvssNMUV8HPTS8A70sZJCX5WMbN4BFkDv3CfeE/mVDjBUAX1Ie9btQUOkjOKT/h vpFpVBTzKFXos2HBqpPiXec3qM9rdUZWgbkfVUVfHTnPX/CEiitwHigz7Gi/5fH9I6WyC G4K7GHraVqgN9PP255uxeUyQBb8CYOgYxKnD32pqF/oI/yA6D+SoI4UvjX8amYVUs3mi8 rhIJMQqrGR2mCPbR2IG/X9Txvv9OO4bRMyIBJxCbzOWr4BF4710hCBbWg0qcME5JK+Q== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794521374; h=Received:DKIM-Signature:From:Date:Subject:MIME-Version:Content-Type: Content-Transfer-Encoding:Message-Id:References:In-Reply-To:To:Cc: X-Mailer:X-Developer-Signature:X-Developer-Key; bh=Viwqy3ITQgBszpOy2nxIavh5Mt0ao4kMQc4DSQeToGo=; b=NjxGPniSEy4LE78kAOkIpbkS9m60slIvZmqpasSQCWs0y0gepLaPCEKVB9Y5Jbx+OY/f yMBr8YTdhOoHkJFiQal7w0P4DPFA5ZyKYKOvT25/Xh4YwOeMKby+p8hUYg5La07YoT5n1 nsfWv998YliPchbm35Y6GiVRlDmImznrcm4EvvAJoParpAwSsT+rIJvnNjWynODjzWOkV i3sX5dL5oElcORAaixcdwOgxO/D9LHYJPGMt8YLUGlqjSHzCCLNTR/BOfpIiBZ/VHYtXE WgdwdOTSULdMNNQ0KZqw0DHOcGwdxzVbgPw9vVh2T5wq+eehK0lG1NXCNkctARn2jQg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=HM4HKwBw; 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 909CC606A33E for ; Thu, 12 Nov 2026 22:09:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=HM4HKwBw Received: by smtp.kernel.org (Postfix) with ESMTPSA id 555C61F000D4; Thu, 12 Nov 2026 22:09:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794521374; bh=Viwqy3ITQgBszpOy2nxIavh5Mt0ao4kMQc4DSQeToGo=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=HM4HKwBwenX5LPu3liCUHEMsEalytKn7ys2DDGNSBAMroq/1dFf/rVUIYBjFEHEpI hE/fY4rJBXGrrTOlj+FZDCzgZ/BtsewXoNR8UtSzaKL3UkvJ1GnU2uIWtxs8CtmBBW 0qUUCKuerr+2hwfE4QZ3r9yCnSLDgkteS96rugzAyzmanEYhnXcnUEsXjy0yK3Id9c 1d7fVZqky1H5uWLL9Z3pHvNpyENJfo+QwEDcpD3mU4gm8mDkSdZS36INIPyHwx5f4d gwGCNlnn5K6jpoD06i27gE2QSn1Iab7gBi1sgmvAemRpMKmkZuQiuX4NtlNV7WUC/I p0yh9C0dDrLeg== From: "David Hildenbrand (Arm)" Date: Thu, 12 Nov 2026 23:08:59 +0100 Subject: [PATCH 3/5] drm/i915/selftests: request read access for mmap access tests X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261112-access_shite-v1-3-988a5c470db2@kernel.org> References: <20261112-access_shite-v1-0-988a5c470db2@kernel.org> In-Reply-To: <20261112-access_shite-v1-0-988a5c470db2@kernel.org> To: Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Andrew Morton , Willy Tarreau , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Simona Vetter , Chris Wilson , Matthew Auld , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , "Ritesh Harjani (IBM)" , Shrikanth Hegde , Rik van Riel , Benjamin Herrenschmidt Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linuxppc-dev@lists.ozlabs.org, "David Hildenbrand (Arm)" X-Mailer: b4 0.16.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1199; i=david@kernel.org; h=from:subject:message-id; bh=UNHRKTPPJVrGYq3JL2OOfSiN8BE6XDeP4WdpR0zw48w=; b=owGbwMvMwCF2/OVpCdfQ3ZWMp9WSGLK+WfzXfSMdyle0+taS0KYbrY+ZzNvWegtJcp07d9F1o 8y9imPFHaUsDGIcDLJiiixBwfcNXr5cV1vtxscMM4eVCWQIAxenAExkkzEjw1dWKyPrzb+96jf5 r53V6B4zxaXk36Gv5ozRBdwzOZ5LsDMyfDYz6l6worxt7dyFeduun10lZLpV2HND/cMu4aMaMY/ 7uAE= X-Developer-Key: i=david@kernel.org; a=openpgp; fpr=1BD9CAAD735C4C3A460DFCCA4DDE10F700FF835A __igt_mmap_access() reads the buffer with access_process_vm() without FOLL_FORCE, but creates the mapping with only PROT_WRITE. Request PROT_READ as well so the test remains valid when we fix the ->access fallback to properly check VMA access permissions. Fixes: 9f909e215fea ("drm/i915: Implement vm_ops->access for gdb access into mmaps") Signed-off-by: David Hildenbrand (Arm) --- drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c index 303be698891fd..d9c828032a1aa 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c @@ -1460,7 +1460,8 @@ static int __igt_mmap_access(struct drm_i915_private *i915, if (err) return err; - addr = igt_mmap_offset(i915, offset, obj->base.size, PROT_WRITE, MAP_SHARED); + addr = igt_mmap_offset(i915, offset, obj->base.size, + PROT_READ | PROT_WRITE, MAP_SHARED); if (IS_ERR_VALUE(addr)) return addr; ptr = (unsigned long __user *)addr; -- 2.43.0