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  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]
Date:   Thu, 21 May 2020 11:35:49 +0200
From:   Arnd Bergmann <>
To:     Naresh Kamboju <>
Cc:     Chris Down <>,
        Yafang Shao <>,
        Michal Hocko <>,
        Anders Roxell <>,
        "Linux F2FS DEV, Mailing List" 
        linux-ext4 <>,
        linux-block <>,
        Andrew Morton <>,
        open list <>,
        Linux-Next Mailing List <>,
        linux-mm <>,
        Andreas Dilger <>,
        Jaegeuk Kim <>,
        "Theodore Ts'o" <>, Chao Yu <>,
        Hugh Dickins <>,
        Andrea Arcangeli <>,
        Matthew Wilcox <>,
        Chao Yu <>,,
        Johannes Weiner <>,
        Roman Gushchin <>, Cgroups <>
Subject: Re: mm: mkfs.ext4 invoked oom-killer on i386 - pagecache_get_page

On Thu, May 21, 2020 at 11:22 AM Naresh Kamboju
<> wrote:
> On Thu, 21 May 2020 at 00:39, Chris Down <> wrote:
> > Since you have i386 hardware available, and I don't, could you please apply
> > only "avoid stale protection" again and check if it only happens with that
> > commit, or requires both? That would help narrow down the suspects.

Note that Naresh is running an i386 kernel on regular 64-bit hardware that
most people have access to.

> kernel config link,

Do you know if the same bug shows up running a kernel with that
configuration in qemu? I would expect it to, and that would make
it much easier to reproduce.

I would also not be surprised if it happens on all architectures but only
shows up on the 32-bit arm and x86 machines first because they have
a rather limited amount of lowmem. Maybe booting a 64-bit kernel
with "mem=512M" and then running "dd if=/dev/sda of=/dev/null bs=1M"
will also trigger it. I did not attempt to run this myself.


Powered by blists - more mailing lists