From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ilia Mirkin Subject: [PATCH] drm/nouveau: avoid null deref on bad arguments to nouveau_vma_getmap Date: Wed, 21 Aug 2013 20:10:14 -0400 Message-ID: <1377130214-17522-1-git-send-email-imirkin@alum.mit.edu> 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: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: Ben Skeggs Cc: nouveau@lists.freedesktop.org, Maarten Lankhorst , dri-devel@lists.freedesktop.org, =?UTF-8?q?Pasi=20K=C3=A4rkk=C3=A4inen?= List-Id: dri-devel@lists.freedesktop.org VGhlIGNvZGUgZXhwZWN0cyBub24tVlJBTSBtZW0gbm9kZXMgdG8gaGF2ZSBhIHBhZ2VzIGxpc3Qu IElmIHRoYXQncyBub3QKc2V0LCBpdCB3aWxsIGRvIGEgbnVsbCBkZXJlZiBkb3duIHRoZSBsaW5l LiBXYXJuIG9uIHRoYXQgY29uZGl0aW9uIGFuZApyZXR1cm4gYW4gZXJyb3IuCgpTZWUgaHR0cHM6 Ly9idWdzLmZyZWVkZXNrdG9wLm9yZy9zaG93X2J1Zy5jZ2k/aWQ9NjQ3NzQKClJlcG9ydGVkLWJ5 OiBQYXNpIEvDpHJra8OkaW5lbiA8cGFzaWtAaWtpLmZpPgpUZXN0ZWQtYnk6IFBhc2kgS8Okcmtr w6RpbmVuIDxwYXNpa0Bpa2kuZmk+ClNpZ25lZC1vZmYtYnk6IElsaWEgTWlya2luIDxpbWlya2lu QGFsdW0ubWl0LmVkdT4KQ2M6IDxzdGFibGVAdmdlci5rZXJuZWwub3JnPiAjIDMuOCsKLS0tCgpJ IGRvbid0IGV4YWN0bHkgdW5kZXJzdGFuZCB3aGF0J3MgZ29pbmcgb24sIGJ1dCB0aGlzIGlzIGp1 c3QgYQpzdHJhaWdodGZvcndhcmQgd2F5IHRvIGF2b2lkIGEgbnVsbCBkZXJlZiB0aGF0IHlvdSBz ZWUgaGFwcGVucyBpbiB0aGUKYnVnLiBJIGhhdmVuJ3QgZmlndXJlZCBvdXQgdGhlIHJvb3QgY2F1 c2Ugb2YgdGhpcywgYnV0IGl0J3MgZ2V0dGluZwp3ZWxsIGludG8gdGhlICJJIGhhdmUgbm8gaWRl YSBob3cgVFRNIHdvcmtzIiBzcGFjZS4gSG93ZXZlciB0aGlzIHNlZW1zCmxpa2UgYSBiaXQgb2Yg ZGVmZW5zaXZlIHByb2dyYW1taW5nIC0tIG5vdXZlYXVfdm1fbWFwX3NnIHdpbGwgcGFzcwpub2Rl LT5wYWdlcyBhcyBhIGxpc3QgZG93biwgd2hpY2ggd2lsbCBiZSBkZXJlZmVyZW5jZWQgYnkKbnZj MF92bV9tYXBfc2cuIFBlcmhhcHMgdGhlIG90aGVyIGFyZ3VtZW50cyBzaG91bGQgbWFrZSB0aGF0 CmRlcmVmZXJlbmNpbmcgbm90IGhhcHBlbiwgYnV0IGl0IGRlZmluaXRlbHkgd2FzIGhhcHBlbmlu ZyBoZXJlLCBhcyB5b3UKY2FuIHNlZSBpbiB0aGUgYnVnLgoKQmVuL01hYXJ0ZW4sIEknbGwgbGV0 IHlvdSBqdWRnZSB3aGV0aGVyIHRoaXMgY2hlY2sgaXMgYXBwcm9wcmlhdGUsCnNpbmNlIGxpa2Ug SSBob3BlIEkgd2FzIGFibGUgdG8gY29udmV5IGFib3ZlLCBJJ20ganVzdCBub3QgcmVhbGx5IHN1 cmUgOikKCiBkcml2ZXJzL2dwdS9kcm0vbm91dmVhdS9ub3V2ZWF1X2JvLmMgfCA2ICsrKysrKwog MSBmaWxlIGNoYW5nZWQsIDYgaW5zZXJ0aW9ucygrKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1 L2RybS9ub3V2ZWF1L25vdXZlYXVfYm8uYyBiL2RyaXZlcnMvZ3B1L2RybS9ub3V2ZWF1L25vdXZl YXVfYm8uYwppbmRleCBjZGMzMjgyLi4xOTExNDVkIDEwMDY0NAotLS0gYS9kcml2ZXJzL2dwdS9k cm0vbm91dmVhdS9ub3V2ZWF1X2JvLmMKKysrIGIvZHJpdmVycy9ncHUvZHJtL25vdXZlYXUvbm91 dmVhdV9iby5jCkBAIC05NjMsNiArOTYzLDEyIEBAIG5vdXZlYXVfdm1hX2dldG1hcChzdHJ1Y3Qg bm91dmVhdV9jaGFubmVsICpjaGFuLCBzdHJ1Y3Qgbm91dmVhdV9ibyAqbnZibywKIAlzdHJ1Y3Qg bm91dmVhdV9tZW0gKm5vZGUgPSBtZW0tPm1tX25vZGU7CiAJaW50IHJldDsKIAorCS8qIElmIHdl IGV2ZXIgZ2V0IGhlcmUgZm9yIGEgbm9uLXZyYW0gbWVtIG5vZGUgdGhhdCBkb2Vzbid0CisJICog aGF2ZSBwYWdlcywgd2Ugd2lsbCBlbmQgdXAgZG9pbmcgYSBudWxsIGRlcmVmIGluCisJICogbm91 dmVhdV92bV9tYXBfc2cuICovCisJaWYgKFdBUk5fT04obWVtLT5tZW1fdHlwZSAhPSBUVE1fUExf VlJBTSAmJiAhbm9kZS0+cGFnZXMpKQorCQlyZXR1cm4gLUVJTlZBTDsKKwogCXJldCA9IG5vdXZl YXVfdm1fZ2V0KG52X2NsaWVudChjaGFuLT5jbGkpLT52bSwgbWVtLT5udW1fcGFnZXMgPDwKIAkJ CSAgICAgUEFHRV9TSElGVCwgbm9kZS0+cGFnZV9zaGlmdCwKIAkJCSAgICAgTlZfTUVNX0FDQ0VT U19SVywgdm1hKTsKLS0gCjEuOC4xLjUKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZy ZWVkZXNrdG9wLm9yZwpodHRwOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGlu Zm8vZHJpLWRldmVsCg==