[debbugs-tracker] bug#26227: closed (grep critical local DoS from userspace)

[GNU bug Tracking System]

Your message dated Sat, 25 Mar 2017 18:08:36 -0700
with message-id <address@hidden>
and subject line Re: bug#26227: grep critical local DoS from userspace
has caused the debbugs.gnu.org bug report #26227,
regarding grep critical local DoS from userspace
to be marked as done.

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-- 
26227: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=26227
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> --- Begin Message ---
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> Subject: 
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> grep critical local DoS from userspace
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> Date: 
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> Thu, 23 Mar 2017 20:11:58 +0100
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> Hello,
>
> Today I searched some files and... my server goes to hell (crash).
>
> replication:
>
> 0. log into root or user account (whatever)
> 1. make a huge empty file (eg. 10 GB of zeros)
> (my is: -rw-r--r-- 1 root root 10485760000 Feb 28 18:14 testfile.out)
> 2. grep -Hi "\/tmp\/" * 2>/dev/null
> 3. crash (probably due to out of memory)
>
> ... damn...
>
> greetz,
> -- 
> Tomasz 'BloodMan' Tomkowiak
>
>
>
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> --- End Message ---
> --- Begin Message ---
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> Subject: 
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> Re: bug#26227: grep critical local DoS from userspace
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>
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> Date: 
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> Sat, 25 Mar 2017 18:08:36 -0700
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>
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>
> tags 26227 notabug
> thanks
>
> On Fri, Mar 24, 2017 at 12:19 AM,  <address@hidden> wrote:
> > Ah yes. Mea culpa. This, of course, may be a old bins/kernel/distro bug... ;]
> >
> > address@hidden:~# cat /etc/debian_version
> > 8.7
> > (upgraded)
> >
> > address@hidden:~# cat /proc/version
> > Linux version 3.16.0-4-amd64 (address@hidden) (gcc version 4.8.4 (Debian 
> > 4.8.4-1) ) #1 SMP Debian 3.16.39-1+deb8u2 (2017-03-07)
> >
> > address@hidden:~# grep -V
> > grep (GNU grep) 2.20
>
> In that case, I'm closing this auto-created issue and tagging it as "notabug".
>
>
> --- End Message ---