From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Clark Subject: [PATCH 1/2] drm/msm: fix use of copy_from_user() while holding spinlock Date: Mon, 22 Aug 2016 15:38:04 -0400 Message-ID: <1471894685-20199-1-git-send-email-robdclark@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: freedreno-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "Freedreno" To: dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Cc: stable-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Rob Clark , Al Viro , Daniel Vetter , Vaishali Thakkar , freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org List-Id: dri-devel@lists.freedesktop.org VXNlIGluc3RlYWQgX19jb3B5X2Zyb21fdXNlcl9pbmF0b21pYygpIGFuZCBmYWxsYmFjayB0byBz bG93LXBhdGggd2hlcmUKd2UgZHJvcCBhbmQgcmUtYXF1aXJlIHRoZSBsb2NrIGluIGNhc2Ugb2Yg ZmF1bHQuCgpDYzogc3RhYmxlQHZnZXIua2VybmVsLm9yZwpSZXBvcnRlZC1ieTogVmFpc2hhbGkg VGhha2thciA8dmFpc2hhbGkudGhha2thckBvcmFjbGUuY29tPgpTaWduZWQtb2ZmLWJ5OiBSb2Ig Q2xhcmsgPHJvYmRjbGFya0BnbWFpbC5jb20+Ci0tLQogZHJpdmVycy9ncHUvZHJtL21zbS9tc21f Z2VtX3N1Ym1pdC5jIHwgMjcgKysrKysrKysrKysrKysrKysrKysrKy0tLS0tCiAxIGZpbGUgY2hh bmdlZCwgMjIgaW5zZXJ0aW9ucygrKSwgNSBkZWxldGlvbnMoLSkKCmRpZmYgLS1naXQgYS9kcml2 ZXJzL2dwdS9kcm0vbXNtL21zbV9nZW1fc3VibWl0LmMgYi9kcml2ZXJzL2dwdS9kcm0vbXNtL21z bV9nZW1fc3VibWl0LmMKaW5kZXggNDIzMjNkMS4uMDNkNGNlMiAxMDA2NDQKLS0tIGEvZHJpdmVy cy9ncHUvZHJtL21zbS9tc21fZ2VtX3N1Ym1pdC5jCisrKyBiL2RyaXZlcnMvZ3B1L2RybS9tc20v bXNtX2dlbV9zdWJtaXQuYwpAQCAtNjYsNiArNjYsMTQgQEAgdm9pZCBtc21fZ2VtX3N1Ym1pdF9m cmVlKHN0cnVjdCBtc21fZ2VtX3N1Ym1pdCAqc3VibWl0KQogCWtmcmVlKHN1Ym1pdCk7CiB9CiAK K3N0YXRpYyBpbmxpbmUgdW5zaWduZWQgbG9uZyBfX211c3RfY2hlY2sKK2NvcHlfZnJvbV91c2Vy X2luYXRvbWljKHZvaWQgKnRvLCBjb25zdCB2b2lkIF9fdXNlciAqZnJvbSwgdW5zaWduZWQgbG9u ZyBuKQoreworCWlmIChhY2Nlc3Nfb2soVkVSSUZZX1JFQUQsIGZyb20sIG4pKQorCQlyZXR1cm4g X19jb3B5X2Zyb21fdXNlcl9pbmF0b21pYyh0bywgZnJvbSwgbik7CisJcmV0dXJuIC1FRkFVTFQ7 Cit9CisKIHN0YXRpYyBpbnQgc3VibWl0X2xvb2t1cF9vYmplY3RzKHN0cnVjdCBtc21fZ2VtX3N1 Ym1pdCAqc3VibWl0LAogCQlzdHJ1Y3QgZHJtX21zbV9nZW1fc3VibWl0ICphcmdzLCBzdHJ1Y3Qg ZHJtX2ZpbGUgKmZpbGUpCiB7CkBAIC03Myw2ICs4MSw3IEBAIHN0YXRpYyBpbnQgc3VibWl0X2xv b2t1cF9vYmplY3RzKHN0cnVjdCBtc21fZ2VtX3N1Ym1pdCAqc3VibWl0LAogCWludCByZXQgPSAw OwogCiAJc3Bpbl9sb2NrKCZmaWxlLT50YWJsZV9sb2NrKTsKKwlwYWdlZmF1bHRfZGlzYWJsZSgp OwogCiAJZm9yIChpID0gMDsgaSA8IGFyZ3MtPm5yX2JvczsgaSsrKSB7CiAJCXN0cnVjdCBkcm1f bXNtX2dlbV9zdWJtaXRfYm8gc3VibWl0X2JvOwpAQCAtODYsMTAgKzk1LDE1IEBAIHN0YXRpYyBp bnQgc3VibWl0X2xvb2t1cF9vYmplY3RzKHN0cnVjdCBtc21fZ2VtX3N1Ym1pdCAqc3VibWl0LAog CQkgKi8KIAkJc3VibWl0LT5ib3NbaV0uZmxhZ3MgPSAwOwogCi0JCXJldCA9IGNvcHlfZnJvbV91 c2VyKCZzdWJtaXRfYm8sIHVzZXJwdHIsIHNpemVvZihzdWJtaXRfYm8pKTsKLQkJaWYgKHJldCkg ewotCQkJcmV0ID0gLUVGQVVMVDsKLQkJCWdvdG8gb3V0X3VubG9jazsKKwkJcmV0ID0gY29weV9m cm9tX3VzZXJfaW5hdG9taWMoJnN1Ym1pdF9ibywgdXNlcnB0ciwgc2l6ZW9mKHN1Ym1pdF9ibykp OworCQlpZiAodW5saWtlbHkocmV0KSkgeworCQkJcGFnZWZhdWx0X2VuYWJsZSgpOworCQkJc3Bp bl91bmxvY2soJmZpbGUtPnRhYmxlX2xvY2spOworCQkJcmV0ID0gY29weV9mcm9tX3VzZXIoJnN1 Ym1pdF9ibywgdXNlcnB0ciwgc2l6ZW9mKHN1Ym1pdF9ibykpOworCQkJaWYgKHJldCkKKwkJCQln b3RvIG91dDsKKwkJCXNwaW5fbG9jaygmZmlsZS0+dGFibGVfbG9jayk7CisJCQlwYWdlZmF1bHRf ZGlzYWJsZSgpOwogCQl9CiAKIAkJaWYgKHN1Ym1pdF9iby5mbGFncyAmIH5NU01fU1VCTUlUX0JP X0ZMQUdTKSB7CkBAIC0xMjksOSArMTQzLDEyIEBAIHN0YXRpYyBpbnQgc3VibWl0X2xvb2t1cF9v YmplY3RzKHN0cnVjdCBtc21fZ2VtX3N1Ym1pdCAqc3VibWl0LAogCX0KIAogb3V0X3VubG9jazoK LQlzdWJtaXQtPm5yX2JvcyA9IGk7CisJcGFnZWZhdWx0X2VuYWJsZSgpOwogCXNwaW5fdW5sb2Nr KCZmaWxlLT50YWJsZV9sb2NrKTsKIAorb3V0OgorCXN1Ym1pdC0+bnJfYm9zID0gaTsKKwogCXJl dHVybiByZXQ7CiB9CiAKLS0gCjIuNy40CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fXwpGcmVlZHJlbm8gbWFpbGluZyBsaXN0CkZyZWVkcmVub0BsaXN0cy5m cmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0 aW5mby9mcmVlZHJlbm8K