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Thu, 9 Feb 2023 11:18:54 +0800 (CST) X-Originating-IP: [111.206.145.21] Date: Thu, 9 Feb 2023 11:18:54 +0800 (CST) From: =?GBK?B?zfXV9w==?= To: "Tianjia Zhang" Cc: linux-kernel@vger.kernel.org, hackerzheng666@gmail.com, alex000young@gmail.com Subject: Re:Re: [PATCH] lib/mpi: Fix poential NULL pointer dereference in mpi_fdiv_q X-Priority: 3 X-Mailer: Coremail Webmail Server Version XT5.0.14 build 20220708(c4627114) Copyright (c) 2002-2023 www.mailtech.cn 163com In-Reply-To: <83391944-e0bf-288f-f50e-cc1a28b89a34@linux.alibaba.com> References: <20230203084302.589017-1-zyytlz.wz@163.com> <83391944-e0bf-288f-f50e-cc1a28b89a34@linux.alibaba.com> X-NTES-SC: AL_QuycB/WavU8o4iCRbekXmkYVhOk/Wcu2uPov2IBVO5E0pirQ2TsAQ1BFBV7x2+SpAi+DnzeWXTF12PZLRY1xf7/ryTO2KFW1txtjq6sluBjf Content-Transfer-Encoding: base64 Content-Type: text/plain; charset=GBK MIME-Version: 1.0 Message-ID: X-Coremail-Locale: zh_CN X-CM-TRANSID: W8GowAB3UPkeZuRjOcEUAA--.17640W X-CM-SenderInfo: h2113zf2oz6qqrwthudrp/xtbBzhoQU2I0XRU8wgACs1 X-Coremail-Antispam: 1U5529EdanIXcx71UUUUU7vcSsGvfC2KfnxnUU== Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org CgoKCgoKCgoKCgoKCgoKCkF0IDIwMjMtMDItMDcgMDk6NDE6MzUsICJUaWFuamlhIFpoYW5nIiA8 dGlhbmppYS56aGFuZ0BsaW51eC5hbGliYWJhLmNvbT4gd3JvdGU6Cj5IaSBaaGVuZyBXYW5nLAo+ Cj5PbiAyLzMvMjMgNDo0MyBQTSwgWmhlbmcgV2FuZyB3cm90ZToKPj4gaW4gbGliL21waSwgdGhl cmUgaXMgbXVsdGlwbGUgZnVuY3Rpb24gdGhhdCBub3QgY2hlY2sgdGhlIHJldHVybgo+PiB2YWx1 ZSBvZiBtcGlfYWxsb2MuIE9uZSBjYXNlIGlzIG1waV9mZGl2X3EsIGlmIHRtcCA9PSBOVUxMLAo+ PiB0bXAtPm5saW1icyBpbiBtcGlfZmRpdl9xciB3aWxsIGNhdXNlIE5VTEwgcG9pbnRlciBkZXJl ZmVyZW5jZS4KPj4gQXMgdGhlIGNvZGUgaXMgdG9vIG11Y2gsIGhlcmUgSSBvbmx5IGZpeCBvbmUg b2YgdGhlbS4gT3RoZXIKPj4gZnVuY3Rpb24gbGlrZSBtcGlfYmFycmV0dF9pbml0IG1waV9jb3B5 IG1waV9hbGxvY19saWtlIG1waV9zZXQKPj4gbXBpX3NldF91aSBtcGlfYWxsb2Nfc2V0X3VpIGhh cyB0aGUgc2FtZSBwcm9ibGVtLgo+PiAKPj4gUGxlYXNlIGxldCBtZSBrbm93IGlmIHRoZXJlIGlz IGEgYmV0dGVyIHdheSB0byBmaXggdGhlCj4+IHByb2JsZW0uCj4+IAo+PiBOb3RlIHRoYXQsIGFz IGEgYnVnIGZvdW5kIGJ5IHN0YXRpYyBhbmFseXNpcywgaXQgY2FuIGJlIGEgZmFsc2UKPj4gcG9z aXRpdmUgb3IgaGFyZCB0byB0cmlnZ2VyLgo+Cj5UaGFua3MgZm9yIHlvdXIgcGF0Y2gsIGxpYi9t cGkgaXMgcG9ydGVkIGZyb20gbGliZ2NyeXB0LCBhcyBhbgo+YXBwbGljYXRpb24gbGF5ZXIgbGli cmFyeSwgc3VjaCBlcnJvciBoYW5kbGluZyBpcyBubyBwcm9ibGVtLCBidXQgZm9yCj50aGUga2Vy bmVsLCB0aGVzZSByZXR1cm4gdmFsdWVzIHNob3VsZCBiZSBjaGVja2VkLCBldmVuIGlmIHRoZXNl IGVycm9ycwo+YXJlIGRpZmZpY3VsdCB0byB0cmlnZ2VyLgo+Cj5BcyB5b3Ugc2FpZCwgdGhlcmUg YXJlIG1hbnkgcGxhY2VzIHdoZXJlIHRoaXMgY2hlY2sgaXMgaWdub3JlZCwgYW5kIGV2ZW4KPnRo ZSBlcnJvciByZXR1cm4gdmFsdWUgbmVlZHMgdG8gYmUgcGFzc2VkIHVwd2FyZHMsIHdoaWNoIHNo b3VsZCBiZQo+dXBncmFkZWQgYW5kIGZpeGVkIHVuaWZvcm1seSwgZXZlbiBzb21lIGNhbGxlcnMg bmVlZCBzdWNoIGEgY2hlY2ssIHN1Y2gKPmFzIHRoZSBTTTIgYWxnb3JpdGhtLiBUaGVzZSBjaGVj a3Mgd2VyZSBpbml0aWFsbHkgaWdub3JlZCBpbiB0aGUKPmludGVyZXN0IG9mIGNvZGUgYnJldml0 eSBhbmQgcmFwaWQgZGV2ZWxvcG1lbnQsIGFuZCBpdCBsb29rcyBsaWtlIGl0J3MKPnRpbWUgdG8g Zml4IHRoZW0uCj4KClRoYW5rIHlvdSBmb3IgdGFraW5nIHRoZSB0aW1lIHRvIGNvbnNpZGVyIG15 IHF1ZXN0aW9uLiBIb3BlIGl0IGNhbiBiZQpmaXhlZCBxdWlja2x5LgoKPj4gCj4+IEZpeGVzOiBh OGVhOGJkZDlkZjkgKCJsaWIvbXBpOiBFeHRlbmQgdGhlIE1QSSBsaWJyYXJ5IikKPj4gU2lnbmVk LW9mZi1ieTogWmhlbmcgV2FuZyA8enl5dGx6Lnd6QDE2My5jb20+Cj4+IC0tLQo+PiAgIGxpYi9t cGkvbXBpLWRpdi5jIHwgMyArKy0KPj4gICAxIGZpbGUgY2hhbmdlZCwgMiBpbnNlcnRpb25zKCsp LCAxIGRlbGV0aW9uKC0pCj4+IAo+PiBkaWZmIC0tZ2l0IGEvbGliL21waS9tcGktZGl2LmMgYi9s aWIvbXBpL21waS1kaXYuYwo+PiBpbmRleCA0NWJlYWI4YjllOWUuLmU4NjQyMjY1ZDdkNCAxMDA2 NDQKPj4gLS0tIGEvbGliL21waS9tcGktZGl2LmMKPj4gKysrIGIvbGliL21waS9tcGktZGl2LmMK Pj4gQEAgLTQzLDcgKzQzLDggQEAgdm9pZCBtcGlfZmRpdl9yKE1QSSByZW0sIE1QSSBkaXZpZGVu ZCwgTVBJIGRpdmlzb3IpCj4+ICAgdm9pZCBtcGlfZmRpdl9xKE1QSSBxdW90LCBNUEkgZGl2aWRl bmQsIE1QSSBkaXZpc29yKQo+PiAgIHsKPj4gICAJTVBJIHRtcCA9IG1waV9hbGxvYyhtcGlfZ2V0 X25saW1icyhxdW90KSk7Cj4+IC0JbXBpX2ZkaXZfcXIocXVvdCwgdG1wLCBkaXZpZGVuZCwgZGl2 aXNvcik7Cj4+ICsJaWYgKHRtcCkKPj4gKwkJbXBpX2ZkaXZfcXIocXVvdCwgdG1wLCBkaXZpZGVu ZCwgZGl2aXNvcik7Cj4+ICAgCW1waV9mcmVlKHRtcCk7Cj4+ICAgfQo+PiAgIAo+Cj5BcyBmYXIg YXMgdGhpcyBpcyBjb25jZXJuZWQsIHRoZSBhbGxvY2F0aW9uIGZhaWx1cmUgc2hvdWxkIHBhc3Mg dGhlCj5FTk9NRU0gZXJyb3IgdXB3YXJkcywgbm90IHRoZSB2b2lkIHR5cGUuCgpZZXMsIEkgdGhp bmsgdGhlIGdvb2Qgd2F5IGlzIHRvIHJlZmFjdG9yIHRoZSBwcm90b3R5cGUgb2YgZnVuY3Rpb24s Cm1ha2luZyBpdCBhdmFpbGFibGUgdG8gcmVjZWl2ZXIgZXJyb3IgY29kZSBhbmQgcGFzcyBpdCB0 byB0aGUgY2FsbGVyCmZ1bmN0aW9uLCB1bnRpbCB0aGVyZSBpcyBhbiBlcnJvciBoYW5kbGVyIHRv IGhhbmRsZSBpdC4KCkJlc3QgcmVnYXJkcywKWmhlbmcgV2FuZw==