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Tue, 11 Aug 2020 19:56:17 +0200 To: nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org, Ben Skeggs , Daniel Vetter , David Airlie From: Markus Elfring Subject: [PATCH] drm/nouveau/gem: Use vmemdup_user() rather than duplicating its implementation Autocrypt: addr=Markus.Elfring@web.de; prefer-encrypt=mutual; keydata= mQINBFg2+xABEADBJW2hoUoFXVFWTeKbqqif8VjszdMkriilx90WB5c0ddWQX14h6w5bT/A8 +v43YoGpDNyhgA0w9CEhuwfZrE91GocMtjLO67TAc2i2nxMc/FJRDI0OemO4VJ9RwID6ltwt mpVJgXGKkNJ1ey+QOXouzlErVvE2fRh+KXXN1Q7fSmTJlAW9XJYHS3BDHb0uRpymRSX3O+E2 lA87C7R8qAigPDZi6Z7UmwIA83ZMKXQ5stA0lhPyYgQcM7fh7V4ZYhnR0I5/qkUoxKpqaYLp YHBczVP+Zx/zHOM0KQphOMbU7X3c1pmMruoe6ti9uZzqZSLsF+NKXFEPBS665tQr66HJvZvY GMDlntZFAZ6xQvCC1r3MGoxEC1tuEa24vPCC9RZ9wk2sY5Csbva0WwYv3WKRZZBv8eIhGMxs rcpeGShRFyZ/0BYO53wZAPV1pEhGLLxd8eLN/nEWjJE0ejakPC1H/mt5F+yQBJAzz9JzbToU 5jKLu0SugNI18MspJut8AiA1M44CIWrNHXvWsQ+nnBKHDHHYZu7MoXlOmB32ndsfPthR3GSv jN7YD4Ad724H8fhRijmC1+RpuSce7w2JLj5cYj4MlccmNb8YUxsE8brY2WkXQYS8Ivse39MX BE66MQN0r5DQ6oqgoJ4gHIVBUv/ZwgcmUNS5gQkNCFA0dWXznQARAQABtCZNYXJrdXMgRWxm cmluZyA8TWFya3VzLkVsZnJpbmdAd2ViLmRlPokCVAQTAQgAPhYhBHDP0hzibeXjwQ/ITuU9 Figxg9azBQJYNvsQAhsjBQkJZgGABQsJCAcCBhUICQoLAgQWAgMBAh4BAheAAAoJEOU9Figx g9azcyMP/iVihZkZ4VyH3/wlV3nRiXvSreqg+pGPI3c8J6DjP9zvz7QHN35zWM++1yNek7Ar OVXwuKBo18ASlYzZPTFJZwQQdkZSV+atwIzG3US50ZZ4p7VyUuDuQQVVqFlaf6qZOkwHSnk+ CeGxlDz1POSHY17VbJG2CzPuqMfgBtqIU1dODFLpFq4oIAwEOG6fxRa59qbsTLXxyw+PzRaR LIjVOit28raM83Efk07JKow8URb4u1n7k9RGAcnsM5/WMLRbDYjWTx0lJ2WO9zYwPgRykhn2 sOyJVXk9xVESGTwEPbTtfHM+4x0n0gC6GzfTMvwvZ9G6xoM0S4/+lgbaaa9t5tT/PrsvJiob kfqDrPbmSwr2G5mHnSM9M7B+w8odjmQFOwAjfcxoVIHxC4Cl/GAAKsX3KNKTspCHR0Yag78w i8duH/eEd4tB8twcqCi3aCgWoIrhjNS0myusmuA89kAWFFW5z26qNCOefovCx8drdMXQfMYv g5lRk821ZCNBosfRUvcMXoY6lTwHLIDrEfkJQtjxfdTlWQdwr0mM5ye7vd83AManSQwutgpI q+wE8CNY2VN9xAlE7OhcmWXlnAw3MJLW863SXdGlnkA3N+U4BoKQSIToGuXARQ14IMNvfeKX NphLPpUUnUNdfxAHu/S3tPTc/E/oePbHo794dnEm57LuuQINBFg2+xABEADZg/T+4o5qj4cw nd0G5pFy7ACxk28mSrLuva9tyzqPgRZ2bdPiwNXJUvBg1es2u81urekeUvGvnERB/TKekp25 4wU3I2lEhIXj5NVdLc6eU5czZQs4YEZbu1U5iqhhZmKhlLrhLlZv2whLOXRlLwi4jAzXIZAu 76mT813jbczl2dwxFxcT8XRzk9+dwzNTdOg75683uinMgskiiul+dzd6sumdOhRZR7YBT+xC wzfykOgBKnzfFscMwKR0iuHNB+VdEnZw80XGZi4N1ku81DHxmo2HG3icg7CwO1ih2jx8ik0r riIyMhJrTXgR1hF6kQnX7p2mXe6K0s8tQFK0ZZmYpZuGYYsV05OvU8yqrRVL/GYvy4Xgplm3 DuMuC7/A9/BfmxZVEPAS1gW6QQ8vSO4zf60zREKoSNYeiv+tURM2KOEj8tCMZN3k3sNASfoG fMvTvOjT0yzMbJsI1jwLwy5uA2JVdSLoWzBD8awZ2X/eCU9YDZeGuWmxzIHvkuMj8FfX8cK/ 2m437UA877eqmcgiEy/3B7XeHUipOL83gjfq4ETzVmxVswkVvZvR6j2blQVr+MhCZPq83Ota xNB7QptPxJuNRZ49gtT6uQkyGI+2daXqkj/Mot5tKxNKtM1Vbr/3b+AEMA7qLz7QjhgGJcie qp4b0gELjY1Oe9dBAXMiDwARAQABiQI8BBgBCAAmFiEEcM/SHOJt5ePBD8hO5T0WKDGD1rMF Alg2+xACGwwFCQlmAYAACgkQ5T0WKDGD1rOYSw/+P6fYSZjTJDAl9XNfXRjRRyJSfaw6N1pA Ahuu0MIa3djFRuFCrAHUaaFZf5V2iW5xhGnrhDwE1Ksf7tlstSne/G0a+Ef7vhUyeTn6U/0m +/BrsCsBUXhqeNuraGUtaleatQijXfuemUwgB+mE3B0SobE601XLo6MYIhPh8MG32MKO5kOY hB5jzyor7WoN3ETVNQoGgMzPVWIRElwpcXr+yGoTLAOpG7nkAUBBj9n9TPpSdt/npfok9ZfL /Q+ranrxb2Cy4tvOPxeVfR58XveX85ICrW9VHPVq9sJf/a24bMm6+qEg1V/G7u/AM3fM8U2m tdrTqOrfxklZ7beppGKzC1/WLrcr072vrdiN0icyOHQlfWmaPv0pUnW3AwtiMYngT96BevfA qlwaymjPTvH+cTXScnbydfOQW8220JQwykUe+sHRZfAF5TS2YCkQvsyf7vIpSqo/ttDk4+xc Z/wsLiWTgKlih2QYULvW61XU+mWsK8+ZlYUrRMpkauN4CJ5yTpvp+Orcz5KixHQmc5tbkLWf x0n1QFc1xxJhbzN+r9djSGGN/5IBDfUqSANC8cWzHpWaHmSuU3JSAMB/N+yQjIad2ztTckZY pwT6oxng29LzZspTYUEzMz3wK2jQHw+U66qBFk8whA7B2uAU1QdGyPgahLYSOa4XAEGb6wbI FEE= Message-ID: <12ebdcbe-8a8a-958a-af05-a0593d9756b2@web.de> Date: Tue, 11 Aug 2020 19:56:15 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 Content-Language: en-GB X-Provags-ID: V03:K1:1dhYTYlDehXAt+DPD3jN+KuRggPAit8kAjihzNkVoIqDNU5n4X1 hHuTVx7azj7gv4IQDxAMrdLDa0ryALeR2dsV82saPwv3IGG1KylG4A1sZBIlCVuRocaF+kf QyjLAoHNJvuVCSAh21VF7oFm0BTrXLdehmxD1A3AizSPCNO7HzNYVmiMhgPwMvcmRDtnFHY zHSyfLO7q5vik2o1Fnjrg== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:4LlvZsMrbRc=:Qk0j3dq4szC2UlXXea7fxO iCoM4uANdiRpSiQAZA4K9AacR2pz1sUUklJA1L/Yto1h3vqypLXnaKEq7DDDfpIHtsceJYbL/ wMuGjwnnvMyEqBmZ6culSfKddkqHoLR+0rgNPpfRAjgOkuxvQa7kjgafass2/NNJ6/DP713DN RRIhP71rzXmNfPviuh/X8uZWMP1sLxM/yFQEnhLx+J4CWE/EPrlc/Wt45y41Hhxqfg6Xd1Qvc nQ5UbsccQTAJByP9ov2Ph0Y/8B+0IOzI+NdUkOmY4Eg66WHaZj0UEVqbbhDvcvLWtY0crjiqW g1LWRHaUQCk0fHYDWbLlGPZQWoUCGFK2hRCXWmMnYilBoD1bjlfOpNgYVZGdn2svxvxgTdWKf udWfq/Aj1StPqUSa/+YWo9DqSIJi1Qg8z51zTxctdRV7jra5bnEgopHEOEn2f52PP0A+N3fev inhpt8EuSzil1hqBq3Ndul6qCLqfd2RUX8wdl3k2zZTCwYnsvzIADWhQUd07MpINMdz2jQ1lG PbS1EeGHotqQIHhVOGwX6o8q2efmaUt0umu5F2LWFlL/D9tVnHYRRZDpr0FHGfh6lO7aKRms+ PWeSEeAX2Q/Gi9rGTREF6O1RLKibBzsKWJC+GEfBiiZSCehnAzz1WDLBTEbL/UE8xLIESC7Q7 FUuibB7/J/lW409yOeRWBs5k6sMAdjusyh7sG+TE7hrodbKN/q8RTPhtgyLpHWvBj3gBM8rH0 upNSULlhDTZg5Ms9Fr/IhlYh+rqs0P0QS0MgG0H6HZl7LXFIpqxWTRaA0bUvpZfO1Vrv8sFS2 xRRjzGAr3ceFzDNO3N0dCGah5e8Mo7uDjdwi2bOJZsR9HwdrhmW2a6+2ak4JEehNEPUoSEtxj Bv8+Lq+J4jCoyqoDpC2TRsHlJsYojowL2qio4Vo47gTX5nLaJgxtZdqLvkyEm7YmIcgtipBQ4 O8zKZwjMyOpgqsQwHd9JN+n5lkdmFl5+bW0svnOe4IYLgxpN2tWt2z1ilQ1j8+PdmRkCaO8O4 0MSxAMIGTXmMtjMlExJCfu5c34b2EbAotYllf5naOIxWbf+abBC1tLWwN9joqeYY2qHCGg0te 3eJgZooEfvj/ybmhvfmc0L8truq/CzeA78MTSKAfaJ0Z+QZkHUvJSDWX8Qbno/omm0WJSLi60 EFCO+xliOX5+gdqn/mkwGzmrP9pO8ALWSJsN5cUbWsV6WDaSn5mG03Kh2ZJPqnQUwBvhxNocm RTVVM4Bbtb9e4FBXIR077jVJ4Jxxlnr5XwzvykQ== X-Mailman-Approved-At: Wed, 12 Aug 2020 07:05:21 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Julia Lawall , kernel-janitors@vger.kernel.org, LKML , Denis Efremov Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Markus Elfring Date: Tue, 11 Aug 2020 19:25:22 +0200 Reuse existing functionality from vmemdup_user() instead of keeping duplicate source code. Generated by: scripts/coccinelle/api/memdup_user.cocci Signed-off-by: Markus Elfring Reported-by: kernel test robot --- drivers/gpu/drm/nouveau/nouveau_gem.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) -- 2.28.0 diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index 81f111ad3f4f..7ef6221408af 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -587,15 +587,9 @@ u_memcpya(uint64_t user, unsigned nmemb, unsigned size) void __user *userptr = (void __force __user *)(uintptr_t)user; size *= nmemb; - - mem = kvmalloc(size, GFP_KERNEL); - if (!mem) - return ERR_PTR(-ENOMEM); - - if (copy_from_user(mem, userptr, size)) { - u_free(mem); - return ERR_PTR(-EFAULT); - } + mem = vmemdup_user(userptr, size); + if (IS_ERR(mem)) + return ERR_PTR(PTR_ERR(mem)); return mem; }