From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELtXcNXPO4uaM0ArJcyqtGUzNy6hZur1NiqxExkld2ShQZm4sOHsqJRXGLFUdrWEwBqiHjMk ARC-Seal: i=1; a=rsa-sha256; t=1521483263; cv=none; d=google.com; s=arc-20160816; b=O/VX6yoboZJBE2Ld7tDmaCJQmIOTkx9RbZ0p5cFrNyqrNfLVEaqK1umj1VhR7pxUWk p4d0x0hZ7+HKZdBPA3EtHbBaUNQoHcwBrc96mXkhqwH8SnCTO3VrZHixrdpd+YfkZGO4 /B8iIsDrF5A5h7K7RMmZKzrhCCxeOAQb/kwQtY/FXhllYdqU4jf7Po89YHtPF8siYeQc HpZR0yhDFM895mwIUBt/GukmUnKlBw0FFaPy2CqAGgXY4VGsNhYIsxAStUuLT5LdAmgE yq/55qFKxLNpUiaZ1xzQcP/i32pdqS3CORIzRC7fk5ajZCzQFEtXlaC73SendzBUg3it lBXA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=dRkSMllYxYK1eWVXRKBf1+6IN+6j9u/9s924vZk2zgs=; b=0fqDIUcUOLMjRliOSwnwwjiXLJKbfTPdbSPhRTMyntCqd+WNBNhe1nS9/nlFoSLll1 9v26JwzUvkFJuwHLvCH1HJFTQ1y3dmsv7G5m51uHK+jP8M/RDmWKr1XjBNlh7OLnGk6U B4ONlFo1Dn/SWuo8cPFbL5VAaP+ZJOPUGx8/Yn5Qnx4payUHRoTWgHPfdJMkbyfT1MXb jSEJvoTsWGhb1tYmW+yzFjHsOfjaM+dfE5Un988qYHDBdgfdaYISvR7I3Qz5RIixAOD/ ZamB7F6sXXcJAhiLxWG7OHjXpHw9C3jH2zoJdF3e6AV0BRxN64wfXBfmEzsNX5itRYKp utCg== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, =?UTF-8?q?Michel=20D=C3=A4nzer?= , =?UTF-8?q?Christian=20K=C3=B6nig?= , Christopher James Halse Rogers , amd-gfx@lists.freedesktop.org, Alex Deucher , Sasha Levin Subject: [PATCH 4.4 059/134] drm/radeon: Fail fb creation from imported dma-bufs. Date: Mon, 19 Mar 2018 19:05:42 +0100 Message-Id: <20180319171857.843350088@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180319171849.024066323@linuxfoundation.org> References: <20180319171849.024066323@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1595390568975323259?= X-GMAIL-MSGID: =?utf-8?q?1595390834918545494?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Christopher James Halse Rogers [ Upstream commit a294043b2fbd8de69d161457ed0c7a4026bbfa5a ] Any use of the framebuffer will migrate it to VRAM, which is not sensible for an imported dma-buf. v2: Use DRM_DEBUG_KMS to prevent userspace accidentally spamming dmesg. Reviewed-by: Michel Dänzer Reviewed-by: Christian König Signed-off-by: Christopher James Halse Rogers CC: amd-gfx@lists.freedesktop.org Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/radeon/radeon_display.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -1374,6 +1374,12 @@ radeon_user_framebuffer_create(struct dr return ERR_PTR(-ENOENT); } + /* Handle is imported dma-buf, so cannot be migrated to VRAM for scanout */ + if (obj->import_attach) { + DRM_DEBUG_KMS("Cannot create framebuffer from imported dma_buf\n"); + return ERR_PTR(-EINVAL); + } + radeon_fb = kzalloc(sizeof(*radeon_fb), GFP_KERNEL); if (radeon_fb == NULL) { drm_gem_object_unreference_unlocked(obj);