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Cause:
dracut makes use of "grep" without unsetting the environment variable GREP_OPTIONS.
Consequence:
If the user has set GREP_OPTIONS while calling yum or running dracut, usages of the "grep" tool could fail because of arbitrary options.
Fix:
dracut now unsets the GREP_OPTIONS environment variable.
Result:
User settings of the GREP_OPTIONS environment variable does not affect the correct operation of dracut anymore.
Description of problem:
kernel installation fails if environment contains GREP_OPTIONS="--color=always" variable.
# rpm -q dracut-network
dracut-network-004-283.el6.noarch
# export GREP_OPTIONS="--color=always"
# rpm -ihv kernel-2.6.32-279.22.1.el6.x86_64.rpm kernel-firmware-2.6.32-279.22.1.el6.noarch.rpm
Preparing... ########################################### [100%]
1:kernel-firmware ########################################### [ 50%]
2:kernel ########################################### [100%]
The default plymouth plugin (text) doesn't exist
E: Failed to install /lib64/libnss_dns-2.12.so
mkinitrd failed
warning: %posttrans(kernel-2.6.32-279.22.1.el6.x86_64) scriptlet failed, exit status 1
Version-Release number of selected component (if applicable):
dracut-network-004-283.el6.noarch
How reproducible: 100%
Steps to Reproduce:
1. be sure that dracut-network is installed
2. set up GREP_OPTIONS variable:
# export GREP_OPTIONS="--color=always"
3. try to install new kernel
Actual results:
dracut fails with following message in dracut.log
Mon Feb 18 13:55:34 MSK 2013 Err: Failed to install /lib64/libnss_ESC[01;31mESC[KdnsESC[mESC[K-2.12.so
Expected results:
no errors
Additional info:
with dracut debug we have found that problem occurs during execution
/usr/share/dracut/modules.d/95nfs/install
dracut_install $(for i in $(ls {/usr,}$LIBDIR/libnss*.so 2>/dev/null); do echo $i;done | egrep "$nsslibs")
Using "egrep -q" resolved the problem.
In upstream dracut code the problem went away with following commit
http://git.kernel.org/?p=boot/dracut/dracut.git;a=commitdiff;h=5e5f3d5e6c9d94996c9a28bf38f26a4d463c4dd4
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
http://rhn.redhat.com/errata/RHSA-2013-1674.html
Description of problem: kernel installation fails if environment contains GREP_OPTIONS="--color=always" variable. # rpm -q dracut-network dracut-network-004-283.el6.noarch # export GREP_OPTIONS="--color=always" # rpm -ihv kernel-2.6.32-279.22.1.el6.x86_64.rpm kernel-firmware-2.6.32-279.22.1.el6.noarch.rpm Preparing... ########################################### [100%] 1:kernel-firmware ########################################### [ 50%] 2:kernel ########################################### [100%] The default plymouth plugin (text) doesn't exist E: Failed to install /lib64/libnss_dns-2.12.so mkinitrd failed warning: %posttrans(kernel-2.6.32-279.22.1.el6.x86_64) scriptlet failed, exit status 1 Version-Release number of selected component (if applicable): dracut-network-004-283.el6.noarch How reproducible: 100% Steps to Reproduce: 1. be sure that dracut-network is installed 2. set up GREP_OPTIONS variable: # export GREP_OPTIONS="--color=always" 3. try to install new kernel Actual results: dracut fails with following message in dracut.log Mon Feb 18 13:55:34 MSK 2013 Err: Failed to install /lib64/libnss_ESC[01;31mESC[KdnsESC[mESC[K-2.12.so Expected results: no errors Additional info: with dracut debug we have found that problem occurs during execution /usr/share/dracut/modules.d/95nfs/install dracut_install $(for i in $(ls {/usr,}$LIBDIR/libnss*.so 2>/dev/null); do echo $i;done | egrep "$nsslibs") Using "egrep -q" resolved the problem. In upstream dracut code the problem went away with following commit http://git.kernel.org/?p=boot/dracut/dracut.git;a=commitdiff;h=5e5f3d5e6c9d94996c9a28bf38f26a4d463c4dd4