linux-kernel - Re: [PATCH 5.15 000/251] 5.15.47-rc2 review

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: <20220615133845.o2lzfe5s4dzdfvtg@quack3.lan>
Date:   Wed, 15 Jun 2022 15:38:45 +0200
From:   Jan Kara <jack@...e.cz>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Thomas Backlund <tmb@....nu>, Jan Kara <jack@...e.cz>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        stable <stable@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Shuah Khan <shuah@...nel.org>, patches@...nelci.org,
        lkft-triage@...ts.linaro.org, Pavel Machek <pavel@...x.de>,
        Jon Hunter <jonathanh@...dia.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Sudip Mukherjee <sudipm.mukherjee@...il.com>,
        Slade Watkins <slade@...dewatkins.com>
Subject: Re: [PATCH 5.15 000/251] 5.15.47-rc2 review

On Wed 15-06-22 13:00:22, Jan Kara wrote:
> On Tue 14-06-22 12:00:22, Linus Torvalds wrote:
> > On Tue, Jun 14, 2022 at 11:51 AM Linus Torvalds
> > <torvalds@...ux-foundation.org> wrote:
> > >
> > > Or just make sure that noop_backing_dev_info is fully initialized
> > > before it's used.
> > 
> > I don't see any real reason why that
> > 
> >     err = bdi_init(&noop_backing_dev_info);
> > 
> > couldn't just be done very early. Maybe as the first call in
> > driver_init(), before the whole devtmpfs_init() etc.
> 
> I've checked the dependencies and cgroups (which are the only non-trivial
> dependency besides per-CPU infrastructure) are initialized early enough so
> it should work fine. So let's try that.

Attached patch boots for me. Guys, who was able to reproduce the failure: Can
you please confirm this patch fixes your problem?

								Honza
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR

View attachment "0001-init-Initialized-noop_backing_dev_info-early.patch" of type "text/x-patch" (2372 bytes)