From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [v2,19/21] treewide: add checks for the return value of memblock_alloc*() From: Christophe Leroy Message-Id: Date: Thu, 31 Jan 2019 08:07:29 +0100 To: Mike Rapoport Cc: linux-mm@kvack.org, Rich Felker , linux-ia64@vger.kernel.org, devicetree@vger.kernel.org, Catalin Marinas , Heiko Carstens , x86@kernel.org, linux-mips@vger.kernel.org, Max Filippov , Guo Ren , sparclinux@vger.kernel.org, Christoph Hellwig , linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org, Yoshinori Sato , Richard Weinberger , linux-sh@vger.kernel.org, Russell King , kasan-dev@googlegroups.com, Geert Uytterhoeven , Mark Salter , Dennis Zhou , Matt Turner , linux-snps-arc@lists.infradead.org, uclinux-h8-devel@lists.sourceforge.jp, Petr Mladek , linux-xtensa@linux-xtensa.org, linux-alpha@vger.kernel.org, linux-um@lists.infradead.org, linux-m68k@lists.linux-m68k.org, Rob Herring , Greentime Hu , xen-devel@lists.xenproject.org, Stafford Horne , Guan Xuetao , linux-arm-kernel@lists.infradead.org, Michal Simek , Tony Luck , Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Paul Burton , Vineet Gupta , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" , openrisc@lists.librecores.org, Stephen Rothwell List-ID: TGUgMzEvMDEvMjAxOSDDoCAwNzo0NCwgQ2hyaXN0b3BoZSBMZXJveSBhIMOpY3JpdMKgOgo+IAo+ IAo+IExlIDMxLzAxLzIwMTkgw6AgMDc6NDEsIE1pa2UgUmFwb3BvcnQgYSDDqWNyaXTCoDoKPj4g T24gVGh1LCBKYW4gMzEsIDIwMTkgYXQgMDc6MDc6NDZBTSArMDEwMCwgQ2hyaXN0b3BoZSBMZXJv eSB3cm90ZToKPj4+Cj4+Pgo+Pj4gTGUgMjEvMDEvMjAxOSDDoCAwOTowNCwgTWlrZSBSYXBvcG9y dCBhIMOpY3JpdMKgOgo+Pj4+IEFkZCBjaGVjayBmb3IgdGhlIHJldHVybiB2YWx1ZSBvZiBtZW1i bG9ja19hbGxvYyooKSBmdW5jdGlvbnMgYW5kIGNhbGwKPj4+PiBwYW5pYygpIGluIGNhc2Ugb2Yg ZXJyb3IuCj4+Pj4gVGhlIHBhbmljIG1lc3NhZ2UgcmVwZWF0cyB0aGUgb25lIHVzZWQgYnkgcGFu aWNpbmcgbWVtYmxvY2sgCj4+Pj4gYWxsb2NhdG9ycyB3aXRoCj4+Pj4gYWRqdXN0bWVudCBvZiBw YXJhbWV0ZXJzIHRvIGluY2x1ZGUgb25seSByZWxldmFudCBvbmVzLgo+Pj4+Cj4+Pj4gVGhlIHJl cGxhY2VtZW50IHdhcyBtb3N0bHkgYXV0b21hdGVkIHdpdGggc2VtYW50aWMgcGF0Y2hlcyBsaWtl IHRoZSBvbmUKPj4+PiBiZWxvdyB3aXRoIG1hbnVhbCBtYXNzYWdpbmcgb2YgZm9ybWF0IHN0cmlu Z3MuCj4+Pj4KPj4+PiBAQAo+Pj4+IGV4cHJlc3Npb24gcHRyLCBzaXplLCBhbGlnbjsKPj4+PiBA QAo+Pj4+IHB0ciA9IG1lbWJsb2NrX2FsbG9jKHNpemUsIGFsaWduKTsKPj4+PiArIGlmICghcHRy KQo+Pj4+ICvCoMKgwqDCoCBwYW5pYygiJXM6IEZhaWxlZCB0byBhbGxvY2F0ZSAlbHUgYnl0ZXMg YWxpZ249MHglbHhcbiIsIF9fZnVuY19fLAo+Pj4+IHNpemUsIGFsaWduKTsKPj4+Pgo+Pj4+IFNp Z25lZC1vZmYtYnk6IE1pa2UgUmFwb3BvcnQgPHJwcHRAbGludXguaWJtLmNvbT4KPj4+PiBSZXZp ZXdlZC1ieTogR3VvIFJlbiA8cmVuX2d1b0BjLXNreS5jb20+wqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgICMgYy1za3kKPj4+PiBBY2tlZC1ieTogUGF1bCBCdXJ0b24gPHBhdWwuYnVydG9uQG1pcHMu Y29tPsKgwqDCoMKgwqDCoMKgwqAgIyBNSVBTCj4+Pj4gQWNrZWQtYnk6IEhlaWtvIENhcnN0ZW5z IDxoZWlrby5jYXJzdGVuc0BkZS5pYm0uY29tPiAjIHMzOTAKPj4+PiBSZXZpZXdlZC1ieTogSnVl cmdlbiBHcm9zcyA8amdyb3NzQHN1c2UuY29tPsKgwqDCoMKgwqDCoMKgwqAgIyBYZW4KPj4+PiAt LS0KPj4+Cj4+PiBbLi4uXQo+Pj4KPj4+PiBkaWZmIC0tZ2l0IGEvbW0vc3BhcnNlLmMgYi9tbS9z cGFyc2UuYwo+Pj4+IGluZGV4IDdlYTVkYzYuLmFkOTQyNDIgMTAwNjQ0Cj4+Pj4gLS0tIGEvbW0v c3BhcnNlLmMKPj4+PiArKysgYi9tbS9zcGFyc2UuYwo+Pj4KPj4+IFsuLi5dCj4+Pgo+Pj4+IEBA IC00MjUsNiArNDM2LDEwIEBAIHN0YXRpYyB2b2lkIF9faW5pdCBzcGFyc2VfYnVmZmVyX2luaXQo dW5zaWduZWQgCj4+Pj4gbG9uZyBzaXplLCBpbnQgbmlkKQo+Pj4+IMKgwqDCoMKgwqDCoMKgwqDC oCBtZW1ibG9ja19hbGxvY190cnlfbmlkX3JhdyhzaXplLCBQQUdFX1NJWkUsCj4+Pj4gwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgX19wYShNQVhfRE1B X0FERFJFU1MpLAo+Pj4+IMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgIE1FTUJMT0NLX0FMTE9DX0FDQ0VTU0lCTEUsIG5pZCk7Cj4+Pj4gK8KgwqDCoCBp ZiAoIXNwYXJzZW1hcF9idWYpCj4+Pj4gK8KgwqDCoMKgwqDCoMKgIHBhbmljKCIlczogRmFpbGVk IHRvIGFsbG9jYXRlICVsdSBieXRlcyBhbGlnbj0weCVseCBuaWQ9JWQgCj4+Pj4gZnJvbT0lbHhc biIsCj4+Pj4gK8KgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIF9fZnVuY19fLCBzaXplLCBQQUdF X1NJWkUsIG5pZCwgX19wYShNQVhfRE1BX0FERFJFU1MpKTsKPj4+PiArCj4+Pgo+Pj4gbWVtYmxv Y2tfYWxsb2NfdHJ5X25pZF9yYXcoKSBkb2VzIG5vdCBwYW5pYyAoaGVscCBleHBsaWNpdGx5IHNh eXM6IAo+Pj4gRG9lcyBub3QKPj4+IHplcm8gYWxsb2NhdGVkIG1lbW9yeSwgZG9lcyBub3QgcGFu aWMgaWYgcmVxdWVzdCBjYW5ub3QgYmUgc2F0aXNmaWVkLikuCj4+Cj4+ICJEb2VzIG5vdCBwYW5p YyIgZG9lcyBub3QgbWVhbiBpdCBhbHdheXMgc3VjY2VlZHMuCj4gCj4gSSBhZ3JlZSwgYnV0IGF0 IGxlYXN0IGhlcmUgeW91IGFyZSBjaGFuZ2luZyB0aGUgYmVoYXZpb3VyIGJ5IG1ha2luZyBpdCAK PiBwYW5pYyBleHBsaWNpdGx5LiBBcmUgd2Ugc3VyZSB0aGVyZSBhcmUgbm90IGNhc2VzIHdoZXJl IHRoZSBzeXN0ZW0gY291bGQgCj4ganVzdCBjb250aW51ZSBmdW5jdGlvbm5pbmcgPyBNYXliZSBh IFdBUk5fT04oKSB3b3VsZCBiZSBlbm91Z2ggdGhlcmUgPwoKTG9va2luZyBtb3JlIGluIGRldGFp bHMsIGl0IGxvb2tzIGxpa2UgZXZlcnl0aGluZyBpcyBkb25lIHRvIGxpdmUgd2l0aCAKc3BhcnNl bWFwX2J1ZiBOVUxMLCBhbGwgZnVuY3Rpb25zIHVzaW5nIGl0IGNoZWNrIGl0IHNvIGhhdmluZyBp dCBOVUxMIApzaG91bGRuJ3QgaW1wbHkgYSBwYW5pYyBJIGJlbGlldmUsIHNlZSBjb2RlIGJlbG93 LgoKc3RhdGljIHZvaWQgKnNwYXJzZW1hcF9idWYgX19tZW1pbml0ZGF0YTsKc3RhdGljIHZvaWQg KnNwYXJzZW1hcF9idWZfZW5kIF9fbWVtaW5pdGRhdGE7CgpzdGF0aWMgdm9pZCBfX2luaXQgc3Bh cnNlX2J1ZmZlcl9pbml0KHVuc2lnbmVkIGxvbmcgc2l6ZSwgaW50IG5pZCkKewoJV0FSTl9PTihz cGFyc2VtYXBfYnVmKTsJLyogZm9yZ290IHRvIGNhbGwgc3BhcnNlX2J1ZmZlcl9maW5pKCk/ICov CglzcGFyc2VtYXBfYnVmID0KCQltZW1ibG9ja19hbGxvY190cnlfbmlkX3JhdyhzaXplLCBQQUdF X1NJWkUsCgkJCQkJCV9fcGEoTUFYX0RNQV9BRERSRVNTKSwKCQkJCQkJTUVNQkxPQ0tfQUxMT0Nf QUNDRVNTSUJMRSwgbmlkKTsKCXNwYXJzZW1hcF9idWZfZW5kID0gc3BhcnNlbWFwX2J1ZiArIHNp emU7Cn0KCnN0YXRpYyB2b2lkIF9faW5pdCBzcGFyc2VfYnVmZmVyX2Zpbmkodm9pZCkKewoJdW5z aWduZWQgbG9uZyBzaXplID0gc3BhcnNlbWFwX2J1Zl9lbmQgLSBzcGFyc2VtYXBfYnVmOwoKCWlm IChzcGFyc2VtYXBfYnVmICYmIHNpemUgPiAwKQoJCW1lbWJsb2NrX2ZyZWVfZWFybHkoX19wYShz cGFyc2VtYXBfYnVmKSwgc2l6ZSk7CglzcGFyc2VtYXBfYnVmID0gTlVMTDsKfQoKdm9pZCAqIF9f bWVtaW5pdCBzcGFyc2VfYnVmZmVyX2FsbG9jKHVuc2lnbmVkIGxvbmcgc2l6ZSkKewoJdm9pZCAq cHRyID0gTlVMTDsKCglpZiAoc3BhcnNlbWFwX2J1ZikgewoJCXB0ciA9IFBUUl9BTElHTihzcGFy c2VtYXBfYnVmLCBzaXplKTsKCQlpZiAocHRyICsgc2l6ZSA+IHNwYXJzZW1hcF9idWZfZW5kKQoJ CQlwdHIgPSBOVUxMOwoJCWVsc2UKCQkJc3BhcnNlbWFwX2J1ZiA9IHB0ciArIHNpemU7Cgl9Cgly ZXR1cm4gcHRyOwp9CgoKQ2hyaXN0b3BoZQo=