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Fri, 23 Oct 2020 05:23:06 -0700 (PDT) From: Daniel Vetter To: DRI Development Subject: [PATCH 38/65] media/videbuf1|2: Mark follow_pfn usage as unsafe Date: Fri, 23 Oct 2020 14:21:49 +0200 Message-Id: <20201023122216.2373294-38-daniel.vetter@ffwll.ch> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201023122216.2373294-1-daniel.vetter@ffwll.ch> References: <20201021163242.1458885-1-daniel.vetter@ffwll.ch> <20201023122216.2373294-1-daniel.vetter@ffwll.ch> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201023_082309_707806_8C3EED56 X-CRM114-Status: GOOD ( 19.19 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jan Kara , Daniel Vetter , linux-mm@kvack.org, Daniel Vetter , Michel Lespinasse , Marek Szyprowski , linux-samsung-soc@vger.kernel.org, Daniel Jordan , Jason Gunthorpe , linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, Kees Cook , Pawel Osciak , John Hubbard , Intel Graphics Development , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Dan Williams , Laurent Dufour , Vlastimil Babka , Tomasz Figa , Kyungmin Park , Andrew Morton Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org VGhlIG1lZGlhIG1vZGVsIGFzc3VtZXMgdGhhdCBidWZmZXJzIGFyZSBhbGwgcHJlYWxsb2NhdGVk LCBzbyB0aGF0CndoZW4gYSBtZWRpYSBwaXBlbGluZSBpcyBydW5uaW5nIHdlIG5ldmVyIG1pc3Mg YSBkZWFkbGluZSBiZWNhdXNlIHRoZQpidWZmZXJzIGFyZW4ndCBhbGxvY2F0ZWQgb3IgYXZhaWxh YmxlLgoKVGhpcyBtZWFucyB3ZSBjYW5ub3QgZml4IHRoZSB2NGwgZm9sbG93X3BmbiB1c2FnZSB0 aHJvdWdoCm1tdV9ub3RpZmllciwgd2l0aG91dCBicmVha2luZyBob3cgdGhpcyBhbGwgd29ya3Mu IFRoZSBvbmx5IHJlYWwgZml4CmlzIHRvIGRlcHJlY2F0ZSB1c2VycHRyIHN1cHBvcnQgZm9yIFZN X0lPIHwgVk1fUEZOTUFQIG1hcHBpbmdzIGFuZAp0ZWxsIGV2ZXJ5b25lIHRvIGN1dCBvdmVyIHRv IGRtYS1idWYgbWVtb3J5IHNoYXJpbmcgZm9yIHplcm9jb3B5LgoKdXNlcnB0ciBmb3Igbm9ybWFs IG1lbW9yeSB3aWxsIGtlZXAgd29ya2luZyBhcy1pcywgdGhpcyBvbmx5IGFmZmVjdHMKdGhlIHpl cm9jb3B5IHVzZXJwdHIgdXNhZ2UgZW5hYmxlZCBpbiA1MGFjOTUyZDIyNjMgKCJbbWVkaWFdCnZp ZGVvYnVmMi1kbWEtc2c6IFN1cHBvcnQgaW8gdXNlcnB0ciBvcGVyYXRpb25zIG9uIGlvIG1lbW9y eSIpLgoKU2lnbmVkLW9mZi1ieTogRGFuaWVsIFZldHRlciA8ZGFuaWVsLnZldHRlckBpbnRlbC5j b20+CkNjOiBKYXNvbiBHdW50aG9ycGUgPGpnZ0B6aWVwZS5jYT4KQ2M6IEtlZXMgQ29vayA8a2Vl c2Nvb2tAY2hyb21pdW0ub3JnPgpDYzogRGFuIFdpbGxpYW1zIDxkYW4uai53aWxsaWFtc0BpbnRl bC5jb20+CkNjOiBBbmRyZXcgTW9ydG9uIDxha3BtQGxpbnV4LWZvdW5kYXRpb24ub3JnPgpDYzog Sm9obiBIdWJiYXJkIDxqaHViYmFyZEBudmlkaWEuY29tPgpDYzogSsOpcsO0bWUgR2xpc3NlIDxq Z2xpc3NlQHJlZGhhdC5jb20+CkNjOiBKYW4gS2FyYSA8amFja0BzdXNlLmN6PgpDYzogRGFuIFdp bGxpYW1zIDxkYW4uai53aWxsaWFtc0BpbnRlbC5jb20+CkNjOiBsaW51eC1tbUBrdmFjay5vcmcK Q2M6IGxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpDYzogbGludXgtc2Ftc3Vu Zy1zb2NAdmdlci5rZXJuZWwub3JnCkNjOiBsaW51eC1tZWRpYUB2Z2VyLmtlcm5lbC5vcmcKQ2M6 IFBhd2VsIE9zY2lhayA8cGF3ZWxAb3NjaWFrLmNvbT4KQ2M6IE1hcmVrIFN6eXByb3dza2kgPG0u c3p5cHJvd3NraUBzYW1zdW5nLmNvbT4KQ2M6IEt5dW5nbWluIFBhcmsgPGt5dW5nbWluLnBhcmtA c2Ftc3VuZy5jb20+CkNjOiBUb21hc3ogRmlnYSA8dGZpZ2FAY2hyb21pdW0ub3JnPgpDYzogTGF1 cmVudCBEdWZvdXIgPGxkdWZvdXJAbGludXguaWJtLmNvbT4KQ2M6IFZsYXN0aW1pbCBCYWJrYSA8 dmJhYmthQHN1c2UuY3o+CkNjOiBEYW5pZWwgSm9yZGFuIDxkYW5pZWwubS5qb3JkYW5Ab3JhY2xl LmNvbT4KQ2M6IE1pY2hlbCBMZXNwaW5hc3NlIDx3YWxrZW5AZ29vZ2xlLmNvbT4KU2lnbmVkLW9m Zi1ieTogRGFuaWVsIFZldHRlciA8ZGFuaWVsLnZldHRlckBmZndsbC5jaD4KLS0KdjM6Ci0gUmVm ZXJlbmNlIHRoZSBjb21taXQgdGhhdCBlbmFibGVkIHRoZSB6ZXJvY29weSB1c2VycHRyIHVzZSBj YXNlIHRvCiAgbWFrZSBpdCBhYnVuZGFuZHRseSBjbGVhciB0aGF0IHRoaXMgcGF0Y2ggb25seSBh ZmZlY3RzIHRoYXQsIGFuZCBub3QKICBub3JtYWwgbWVtb3J5IHVzZXJwdHIuIFRoZSBvbGQgY29t bWl0IG1lc3NhZ2UgYWxyZWFkeSBleHBsYWluZWQgdGhhdAogIG5vcm1hbCBtZW1vcnkgdXNlcnB0 ciBpcyB1bmFmZmVjdGVkLCBidXQgSSBndWVzcyB0aGF0IHdhcyBub3QgY2xlYXIKICBlbm91Z2gu Ci0tLQogZHJpdmVycy9tZWRpYS9jb21tb24vdmlkZW9idWYyL2ZyYW1lX3ZlY3Rvci5jIHwgMiAr LQogZHJpdmVycy9tZWRpYS92NGwyLWNvcmUvdmlkZW9idWYtZG1hLWNvbnRpZy5jIHwgMiArLQog MiBmaWxlcyBjaGFuZ2VkLCAyIGluc2VydGlvbnMoKyksIDIgZGVsZXRpb25zKC0pCgpkaWZmIC0t Z2l0IGEvZHJpdmVycy9tZWRpYS9jb21tb24vdmlkZW9idWYyL2ZyYW1lX3ZlY3Rvci5jIGIvZHJp dmVycy9tZWRpYS9jb21tb24vdmlkZW9idWYyL2ZyYW1lX3ZlY3Rvci5jCmluZGV4IDY1OTA5ODdj MTRiZC4uZTYzMDQ5NGRhNjVjIDEwMDY0NAotLS0gYS9kcml2ZXJzL21lZGlhL2NvbW1vbi92aWRl b2J1ZjIvZnJhbWVfdmVjdG9yLmMKKysrIGIvZHJpdmVycy9tZWRpYS9jb21tb24vdmlkZW9idWYy L2ZyYW1lX3ZlY3Rvci5jCkBAIC02OSw3ICs2OSw3IEBAIGludCBnZXRfdmFkZHJfZnJhbWVzKHVu c2lnbmVkIGxvbmcgc3RhcnQsIHVuc2lnbmVkIGludCBucl9mcmFtZXMsCiAJCQlicmVhazsKIAog CQl3aGlsZSAocmV0IDwgbnJfZnJhbWVzICYmIHN0YXJ0ICsgUEFHRV9TSVpFIDw9IHZtYS0+dm1f ZW5kKSB7Ci0JCQllcnIgPSBmb2xsb3dfcGZuKHZtYSwgc3RhcnQsICZudW1zW3JldF0pOworCQkJ ZXJyID0gdW5zYWZlX2ZvbGxvd19wZm4odm1hLCBzdGFydCwgJm51bXNbcmV0XSk7CiAJCQlpZiAo ZXJyKSB7CiAJCQkJaWYgKHJldCA9PSAwKQogCQkJCQlyZXQgPSBlcnI7CmRpZmYgLS1naXQgYS9k cml2ZXJzL21lZGlhL3Y0bDItY29yZS92aWRlb2J1Zi1kbWEtY29udGlnLmMgYi9kcml2ZXJzL21l ZGlhL3Y0bDItY29yZS92aWRlb2J1Zi1kbWEtY29udGlnLmMKaW5kZXggNTIzMTJjZTJiYTA1Li44 MjFjNGE3NmFiOTYgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvbWVkaWEvdjRsMi1jb3JlL3ZpZGVvYnVm LWRtYS1jb250aWcuYworKysgYi9kcml2ZXJzL21lZGlhL3Y0bDItY29yZS92aWRlb2J1Zi1kbWEt Y29udGlnLmMKQEAgLTE4Myw3ICsxODMsNyBAQCBzdGF0aWMgaW50IHZpZGVvYnVmX2RtYV9jb250 aWdfdXNlcl9nZXQoc3RydWN0IHZpZGVvYnVmX2RtYV9jb250aWdfbWVtb3J5ICptZW0sCiAJdXNl cl9hZGRyZXNzID0gdW50YWdnZWRfYmFkZHI7CiAKIAl3aGlsZSAocGFnZXNfZG9uZSA8IChtZW0t PnNpemUgPj4gUEFHRV9TSElGVCkpIHsKLQkJcmV0ID0gZm9sbG93X3Bmbih2bWEsIHVzZXJfYWRk cmVzcywgJnRoaXNfcGZuKTsKKwkJcmV0ID0gdW5zYWZlX2ZvbGxvd19wZm4odm1hLCB1c2VyX2Fk ZHJlc3MsICZ0aGlzX3Bmbik7CiAJCWlmIChyZXQpCiAJCQlicmVhazsKIAotLSAKMi4yOC4wCgoK X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJt LWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3Jn Cmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtl cm5lbAo=