Bug 1032862 - virtio-rng-egd: repeatedly read same random data-block w/o considering the buffer offset
Summary: virtio-rng-egd: repeatedly read same random data-block w/o considering the bu...
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm
Version: 7.0
Hardware: x86_64
OS: Linux
medium
high
Target Milestone: rc
: ---
Assignee: Amos Kong
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-11-21 03:52 UTC by Amos Kong
Modified: 2015-05-25 00:07 UTC (History)
10 users (show)

Fixed In Version: qemu-kvm-1.5.3-20.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-06-13 09:59:03 UTC
Target Upstream Version:

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Comment 1 Amos Kong 2013-11-21 09:53:51 UTC 
Posted a patch to upstream:

http://lists.nongnu.org/archive/html/qemu-stable/2013-11/msg00045.html
Comment 3 Amos Kong 2013-11-25 07:01:52 UTC 
Hi Junyi,

  We need a test to verify the data is really random, it might catch this bug.
  eg: generate a lot of numbers from 1 ~ 100,  then check the distribution
  Or using some software to verify it.

Amos
Comment 4 Miroslav Rezanina 2013-11-28 07:37:07 UTC 
Fix included in qemu-kvm-1.5.3-20.el7
Comment 6 Shaolong Hu 2014-01-17 08:49:46 UTC 
Verified on qemu-kvm-rhev-1.5.3-31.el7.x86_64:

read 100 characters, it's random.

'\x07\xdf\xf8W\x16\xb4)\xb2tndm}\xcb\xb1\xdd\'\xf2\xf3\x1c*\xbb\xe1\xad\xb3"=\xd0G\x83\xe7\x01K|\xacAP\xdc\xcf\xb9\x97\xb4\x85G\x8f!\xd8\xf9\xb9\xcf}\x98&N\x8eg\x10\x98\\\xd6u\xe6H~\xc5\xf9\xc6\x02\xa3t\x17\xbc6\xa0,\xfd\xb3\x87W\xc6\x047\xae\xa3\xbe\x88\xa2M\xd0\x92Q@r\xcc\xfai\x1b\x08^\xb6'
Comment 7 Ludek Smid 2014-06-13 09:59:03 UTC 
This request was resolved in Red Hat Enterprise Linux 7.0.

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