From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Zhang, Jerry (Junwei)" Subject: Re: [PATCH] drm/amdgpu: fix NULL pointer dereference when run App with DRI_PRIME=1 Date: Fri, 25 May 2018 15:20:19 +0800 Message-ID: <5B07B933.4060701@amd.com> References: <1527226896-29270-1-git-send-email-Jerry.Zhang@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "amd-gfx" To: christian.koenig-5C7GfCeVMHo@public.gmane.org, amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org T24gMDUvMjUvMjAxOCAwMjo0NCBQTSwgQ2hyaXN0aWFuIEvDtm5pZyB3cm90ZToKPiBOQUssIHRo YXQgcHJvYmFibHkganVzdCBmaXhlZCB0aGUgc3ltcHRvbSBidXQgbm90IHRoZSB1bmRlcmx5aW5n IHByb2JsZW0uCj4KPiBTb21lYm9keSBpcyBhY2Nlc3NpbmcgdGhlIHBhZ2UgYXJyYXkgd2hlbiBp dCBzaG91bGQgbmV2ZXIgYmUgYWNjZXNzZWQuCgpJZiBwcmltZSBpbXBvcnQgYXMgR1RUIGJvIGJ5 IGRlZmF1bHQobm93IGl0J3MgQ1BVIGJvKSwgaXQgd291bGQgaGFwcGVucyBxdWlja2x5IAp3aGVu IEdUVCBzZyBibyBjcmVhdGlvbiByYXRoZXIgdGhhbiBuZXh0IGNzIHZhbGlkYXRpb24uCgpTaW5j ZSB0dG1fc2dfdHRfaW5pdCgpIG9ubHkgYWxsb2NhdGVzIGd0dC0+dHRtLmRtYV9hZGRyZXNzIGlm IHNnIGJvIGlzIGNyZWF0ZWQsIAppdCB3b3VsZCBmYWlsIHRvIGFjY2VzcyB0dG0tPnBhZ2VzIHdo ZW4gdHRtIHBvcHVsYXRlLgoKY3VycmVudCBlcnJvciBoYXBwZW5zIGluIHR0bSBwb3B1bGF0ZSBm cm9tIGNzIHZhbGlkYXRpb24sIHRoZSBzZyBibyBpcyBpbXBvcnRlZCAKZnJvbSBleHBvcnRlci4K Cj4KPiBIb3cgZGlkIHlvdSBtYW5hZ2UgdG8gdHJpZ2dlciB0aGlzPwoKUFJJX1BSSU1FPTEgd2l0 aCBVbmlnaW5lIGhlYXZlbi4KClJlZ2FyZHMsCkplcnJ5Cgo+Cj4gUmVnYXJkcywKPiBDaHJpc3Rp YW4uCj4KPiBBbSAyNS4wNS4yMDE4IHVtIDA3OjQxIHNjaHJpZWIgSnVud2VpIFpoYW5nOgo+PiBb ICA2MzIuNjc5ODYxXSBCVUc6IHVuYWJsZSB0byBoYW5kbGUga2VybmVsIE5VTEwgcG9pbnRlciBk ZXJlZmVyZW5jZSBhdCAobnVsbCkKPj4gWyAgNjMyLjY3OTg5Ml0gSVA6IGRybV9wcmltZV9zZ190 b19wYWdlX2FkZHJfYXJyYXlzKzB4NTIvMHhiMCBbZHJtXQo+PiA8c25pcD4KPj4gWyAgNjMyLjY4 MDAxMV0gQ2FsbCBUcmFjZToKPj4gWyAgNjMyLjY4MDA4Ml0gIGFtZGdwdV90dG1fdHRfcG9wdWxh dGUrMHgzZS8weGEwIFthbWRncHVdCj4+IFsgIDYzMi42ODAwOTJdICB0dG1fdHRfcG9wdWxhdGUu cGFydC43KzB4MjIvMHg2MCBbYW1kdHRtXQo+PiBbICA2MzIuNjgwMDk4XSAgYW1kdHRtX3R0X2Jp bmQrMHg1Mi8weDYwIFthbWR0dG1dCj4+IFsgIDYzMi42ODAxMDZdICB0dG1fYm9faGFuZGxlX21v dmVfbWVtKzB4NTRiLzB4NWMwIFthbWR0dG1dCj4+IFsgIDYzMi42ODAxMTJdICA/IGZpbmRfbmV4 dF9iaXQrMHhiLzB4MTAKPj4gWyAgNjMyLjY4MDExOV0gIGFtZHR0bV9ib192YWxpZGF0ZSsweDEx ZC8weDEzMCBbYW1kdHRtXQo+PiBbICA2MzIuNjgwMTc2XSAgYW1kZ3B1X2NzX2JvX3ZhbGlkYXRl KzB4OWQvMHgxNTAgW2FtZGdwdV0KPj4gWyAgNjMyLjY4MDIzMl0gIGFtZGdwdV9jc192YWxpZGF0 ZSsweDQxLzB4MjcwIFthbWRncHVdCj4+IFsgIDYzMi42ODAyODhdICBhbWRncHVfY3NfbGlzdF92 YWxpZGF0ZSsweGM3LzB4MWEwIFthbWRncHVdCj4+IFsgIDYzMi42ODAzNDNdICBhbWRncHVfY3Nf aW9jdGwrMHgxNjM0LzB4MWMwMCBbYW1kZ3B1XQo+PiBbICA2MzIuNjgwNDAxXSAgPyBhbWRncHVf Y3NfZmluZF9tYXBwaW5nKzB4MTIwLzB4MTIwIFthbWRncHVdCj4+IFsgIDYzMi42ODA0MTZdICBk cm1faW9jdGxfa2VybmVsKzB4NmIvMHhiMCBbZHJtXQo+PiBbICA2MzIuNjgwNDMxXSAgZHJtX2lv Y3RsKzB4M2U0LzB4NDUwIFtkcm1dCj4+IFsgIDYzMi42ODA0ODVdICA/IGFtZGdwdV9jc19maW5k X21hcHBpbmcrMHgxMjAvMHgxMjAgW2FtZGdwdV0KPj4gWyAgNjMyLjY4MDUzN10gIGFtZGdwdV9k cm1faW9jdGwrMHg0Yy8weDgwIFthbWRncHVdCj4+IFsgIDYzMi42ODA1NDJdICBkb192ZnNfaW9j dGwrMHhhNC8weDYwMAo+PiBbICA2MzIuNjgwNTQ2XSAgPyBTeVNfZnV0ZXgrMHg3Zi8weDE4MAo+ PiBbICA2MzIuNjgwNTQ5XSAgU3lTX2lvY3RsKzB4NzkvMHg5MAo+PiBbICA2MzIuNjgwNTU0XSAg ZW50cnlfU1lTQ0FMTF82NF9mYXN0cGF0aCsweDI0LzB4YWIKPj4KPj4gU2lnbmVkLW9mZi1ieTog SnVud2VpIFpoYW5nIDxKZXJyeS5aaGFuZ0BhbWQuY29tPgo+PiAtLS0KPj4gICBkcml2ZXJzL2dw dS9kcm0vYW1kL2FtZGdwdS9hbWRncHVfdHRtLmMgfCAyICstCj4+ICAgMSBmaWxlIGNoYW5nZWQs IDEgaW5zZXJ0aW9uKCspLCAxIGRlbGV0aW9uKC0pCj4+Cj4+IGRpZmYgLS1naXQgYS9kcml2ZXJz L2dwdS9kcm0vYW1kL2FtZGdwdS9hbWRncHVfdHRtLmMKPj4gYi9kcml2ZXJzL2dwdS9kcm0vYW1k L2FtZGdwdS9hbWRncHVfdHRtLmMKPj4gaW5kZXggNTdkNGRhNi4uYjI5MzgwOSAxMDA2NDQKPj4g LS0tIGEvZHJpdmVycy9ncHUvZHJtL2FtZC9hbWRncHUvYW1kZ3B1X3R0bS5jCj4+ICsrKyBiL2Ry aXZlcnMvZ3B1L2RybS9hbWQvYW1kZ3B1L2FtZGdwdV90dG0uYwo+PiBAQCAtMTIxMiw3ICsxMjEy LDcgQEAgc3RhdGljIHN0cnVjdCB0dG1fdHQgKmFtZGdwdV90dG1fdHRfY3JlYXRlKHN0cnVjdAo+ PiB0dG1fYnVmZmVyX29iamVjdCAqYm8sCj4+ICAgICAgIGd0dC0+dHRtLnR0bS5mdW5jID0gJmFt ZGdwdV9iYWNrZW5kX2Z1bmM7Cj4+ICAgICAgIC8qIGFsbG9jYXRlIHNwYWNlIGZvciB0aGUgdW5p bml0aWFsaXplZCBwYWdlIGVudHJpZXMgKi8KPj4gLSAgICBpZiAodHRtX3NnX3R0X2luaXQoJmd0 dC0+dHRtLCBibywgcGFnZV9mbGFncykpIHsKPj4gKyAgICBpZiAodHRtX2RtYV90dF9pbml0KCZn dHQtPnR0bSwgYm8sIHBhZ2VfZmxhZ3MpKSB7Cj4+ICAgICAgICAgICBrZnJlZShndHQpOwo+PiAg ICAgICAgICAgcmV0dXJuIE5VTEw7Cj4+ICAgICAgIH0KPgpfX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fXwphbWQtZ2Z4IG1haWxpbmcgbGlzdAphbWQtZ2Z4QGxp c3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFu L2xpc3RpbmZvL2FtZC1nZngK