Description of problem: When running the command 'rescan-scsi-bus.sh -u' the /dev/null file will be deleted. Version-Release number of selected component (if applicable): sg3_utils-1.28-6.el6.x86_64 sg3_utils-libs-1.28-6.el6.x86_64 2.6.32-504.16.2.el6.x86_64 Issue also present in RHEL7 at levels: sg3_utils-libs-1.37-5.el7.x86_64 sg3_utils-1.37-5.el7.x86_64 3.10.0-229.el7.x86_64 How reproducible: [root@rhel6a ~]# cat test.sh #/bin/bash rm tmp.out 2&>1 /dev/null [root@rhel6a ~]# touch tmp.out [root@rhel6a ~]# ls /dev | grep null null [root@rhel6a ~]# ./test.sh [root@rhel6a ~]# [root@rhel6a ~]# ls | grep tmp.out [root@rhel6a ~]# [root@rhel6a ~]# ls /dev | grep null [root@rhel6a ~]# [root@rhel6a ~]# udevadm trigger [root@rhel6a ~]# [root@rhel6a ~]# ls /dev | grep null null Actual results: The following on line 725 removes /dev/null because of the 2&>1 rm $tmpfile 2&>1 /dev/null The set -x output shows: + rm /tmp/rescan-scsi-bus-s 2 /dev/null * Issue does not reproduce if I change 2&>1 to either of the following: 2> &> * It does reproduce if I use 2>&1. Expected results: /dev/null not be deleted. If I can be of any help please let me know. John
Created attachment 1054528 [details] proposed patches for RHEL6 and 7
Created attachment 1107282 [details] Fix /dev/null redirect mistakes Updated the proposed patches with the new attachment (0001-Fix-dev-null-redirect-mistakes.patch), plus submitted it upstream. Scratch build available here: http://brewweb.devel.redhat.com/brew/taskinfo?taskID=10254401 Will wait for a final build when more issues from other bzs have considered.
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. https://rhn.redhat.com/errata/RHBA-2016-0905.html