linux-kernel - Re: [PATCH 2/4] PM: hibernate: improve robustness of mapping pages in the direct map

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <3568e23fb551ae4b8d583c3e6bfdbed505e460e9.camel@intel.com>
Date:   Tue, 27 Oct 2020 01:10:11 +0000
From:   "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
To:     "rppt@...nel.org" <rppt@...nel.org>
CC:     "david@...hat.com" <david@...hat.com>,
        "cl@...ux.com" <cl@...ux.com>,
        "gor@...ux.ibm.com" <gor@...ux.ibm.com>,
        "hpa@...or.com" <hpa@...or.com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "borntraeger@...ibm.com" <borntraeger@...ibm.com>,
        "penberg@...nel.org" <penberg@...nel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "iamjoonsoo.kim@....com" <iamjoonsoo.kim@....com>,
        "will@...nel.org" <will@...nel.org>,
        "aou@...s.berkeley.edu" <aou@...s.berkeley.edu>,
        "kirill@...temov.name" <kirill@...temov.name>,
        "rientjes@...gle.com" <rientjes@...gle.com>,
        "rppt@...ux.ibm.com" <rppt@...ux.ibm.com>,
        "paulus@...ba.org" <paulus@...ba.org>,
        "hca@...ux.ibm.com" <hca@...ux.ibm.com>,
        "bp@...en8.de" <bp@...en8.de>, "pavel@....cz" <pavel@....cz>,
        "sparclinux@...r.kernel.org" <sparclinux@...r.kernel.org>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "luto@...nel.org" <luto@...nel.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "mpe@...erman.id.au" <mpe@...erman.id.au>,
        "benh@...nel.crashing.org" <benh@...nel.crashing.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "rjw@...ysocki.net" <rjw@...ysocki.net>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "palmer@...belt.com" <palmer@...belt.com>,
        "Brown, Len" <len.brown@...el.com>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "linux-s390@...r.kernel.org" <linux-s390@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "paul.walmsley@...ive.com" <paul.walmsley@...ive.com>
Subject: Re: [PATCH 2/4] PM: hibernate: improve robustness of mapping pages in
 the direct map

On Mon, 2020-10-26 at 11:15 +0200, Mike Rapoport wrote:
> The intention of this series is to disallow usage of
> __kernel_map_pages() when DEBUG_PAGEALLOC=n. I'll update this patch
> to
> better handle possible errors, but I still want to keep WARN in the
> caller.

Sorry, I missed this snippet at the bottom, that your intention was to
actually handle errors somehow in the hibernate code. Please ignore my
other comment that assumed you wanted to just add a warn.