From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lyude Paul Subject: [PATCH v3] drm/nouveau: Fix potential memory access error in debugfs_pstate_get/set() Date: Tue, 31 Jul 2018 11:28:26 -0400 Message-ID: <20180731152827.28573-1-lyude@redhat.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: nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "Nouveau" To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Cc: David Airlie , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, Ben Skeggs List-Id: dri-devel@lists.freedesktop.org bm91dmVhdV9kZWJ1Z2ZzKGRybSkgd2lsbCBuZXZlciBiZSBOVUxMLCBiZWNhdXNlIHdlJ3JlIHRh a2luZyB0aGUgdmFsdWUKb2YgdGhlIHBvdGVudGlhbGx5IG51bGwgZGV2aWNlIHBvaW50ZXIgYW5k IGFkZGluZyB0byBpdCBzbyBpdCBpc24ndCAweDAuClNvLCBjaGVjayBpZiBkcm0gaXMgTlVMTCBp bnN0ZWFkLgoKU2lnbmVkLW9mZi1ieTogTHl1ZGUgUGF1bCA8bHl1ZGVAcmVkaGF0LmNvbT4KQ2M6 IEthcm9sIEhlcmJzdCA8a2Fyb2xoZXJic3RAZ21haWwuY29tPgotLS0KQ2hhbmdlcyBzaW5jZSB2 MjoKIC0gQWxzbyBmaXggbm91dmVhdV9kZWJ1Z2ZzX3BzdGF0ZV9zZXQoKQoKIGRyaXZlcnMvZ3B1 L2RybS9ub3V2ZWF1L25vdXZlYXVfZGVidWdmcy5jIHwgMTYgKysrKysrKysrKy0tLS0tLQogMSBm aWxlIGNoYW5nZWQsIDEwIGluc2VydGlvbnMoKyksIDYgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0 IGEvZHJpdmVycy9ncHUvZHJtL25vdXZlYXUvbm91dmVhdV9kZWJ1Z2ZzLmMgYi9kcml2ZXJzL2dw dS9kcm0vbm91dmVhdS9ub3V2ZWF1X2RlYnVnZnMuYwppbmRleCA5NjNhNGRiYTgyMTMuLmI3NDQw YjU0MmNiMiAxMDA2NDQKLS0tIGEvZHJpdmVycy9ncHUvZHJtL25vdXZlYXUvbm91dmVhdV9kZWJ1 Z2ZzLmMKKysrIGIvZHJpdmVycy9ncHUvZHJtL25vdXZlYXUvbm91dmVhdV9kZWJ1Z2ZzLmMKQEAg LTUwLDEzICs1MCwxNSBAQCBzdGF0aWMgaW50CiBub3V2ZWF1X2RlYnVnZnNfcHN0YXRlX2dldChz dHJ1Y3Qgc2VxX2ZpbGUgKm0sIHZvaWQgKmRhdGEpCiB7CiAJc3RydWN0IGRybV9kZXZpY2UgKmRy bSA9IG0tPnByaXZhdGU7Ci0Jc3RydWN0IG5vdXZlYXVfZGVidWdmcyAqZGVidWdmcyA9IG5vdXZl YXVfZGVidWdmcyhkcm0pOwotCXN0cnVjdCBudmlmX29iamVjdCAqY3RybCA9ICZkZWJ1Z2ZzLT5j dHJsOworCXN0cnVjdCBub3V2ZWF1X2RlYnVnZnMgKmRlYnVnZnM7CisJc3RydWN0IG52aWZfb2Jq ZWN0ICpjdHJsOwogCXN0cnVjdCBudmlmX2NvbnRyb2xfcHN0YXRlX2luZm9fdjAgaW5mbyA9IHt9 OwogCWludCByZXQsIGk7CiAKLQlpZiAoIWRlYnVnZnMpCisJaWYgKCFkcm0pCiAJCXJldHVybiAt RU5PREVWOworCWRlYnVnZnMgPSBub3V2ZWF1X2RlYnVnZnMoZHJtKTsKKwljdHJsID0gJmRlYnVn ZnMtPmN0cmw7CiAKIAlyZXQgPSBudmlmX210aGQoY3RybCwgTlZJRl9DT05UUk9MX1BTVEFURV9J TkZPLCAmaW5mbywgc2l6ZW9mKGluZm8pKTsKIAlpZiAocmV0KQpAQCAtMTIxLDE0ICsxMjMsMTYg QEAgbm91dmVhdV9kZWJ1Z2ZzX3BzdGF0ZV9zZXQoc3RydWN0IGZpbGUgKmZpbGUsIGNvbnN0IGNo YXIgX191c2VyICp1YnVmLAogewogCXN0cnVjdCBzZXFfZmlsZSAqbSA9IGZpbGUtPnByaXZhdGVf ZGF0YTsKIAlzdHJ1Y3QgZHJtX2RldmljZSAqZHJtID0gbS0+cHJpdmF0ZTsKLQlzdHJ1Y3Qgbm91 dmVhdV9kZWJ1Z2ZzICpkZWJ1Z2ZzID0gbm91dmVhdV9kZWJ1Z2ZzKGRybSk7Ci0Jc3RydWN0IG52 aWZfb2JqZWN0ICpjdHJsID0gJmRlYnVnZnMtPmN0cmw7CisJc3RydWN0IG5vdXZlYXVfZGVidWdm cyAqZGVidWdmczsKKwlzdHJ1Y3QgbnZpZl9vYmplY3QgKmN0cmw7CiAJc3RydWN0IG52aWZfY29u dHJvbF9wc3RhdGVfdXNlcl92MCBhcmdzID0geyAucHdyc3JjID0gLUVJTlZBTCB9OwogCWNoYXIg YnVmWzMyXSA9IHt9LCAqdG1wLCAqY3VyID0gYnVmOwogCWxvbmcgdmFsdWUsIHJldDsKIAotCWlm ICghZGVidWdmcykKKwlpZiAoIWRybSkKIAkJcmV0dXJuIC1FTk9ERVY7CisJZGVidWdmcyA9IG5v dXZlYXVfZGVidWdmcyhkcm0pOworCWN0cmwgPSAmZGVidWdmcy0+Y3RybDsKIAogCWlmIChsZW4g Pj0gc2l6ZW9mKGJ1ZikpCiAJCXJldHVybiAtRUlOVkFMOwotLSAKMi4xNy4xCgpfX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpOb3V2ZWF1IG1haWxpbmcgbGlz dApOb3V2ZWF1QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9w Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL25vdXZlYXUK