Description of problem: After getting some kernel problems, I finally decided to give kdump a try, but to my surprise, it does not work. Any attempt to use kdump (with sysrq-c or echo c >/proc/sysrq-trigger) leads to instant system crash. sysrq does not work anymore at this point and the only solution is hard poweroff. I see that FC7 does not ship kernel-kdump package anymore, but since FC7 kernel is built with CONFIG_RELOCATABLE, it should be fine as kdump kernel I presume. Version-Release number of selected component (if applicable): kernel-2.6.21-1.3116.fc7 How reproducible: 100% reproducible. Steps to Reproduce: boot kernel with crashkernel=128M@16M option run service kdump start run sysctl kernel.sysrq=1 press sysrq-t or echo c >/proc/sysrq-trigger Additional info: The system is DELL Latitude D620 laptop with Intel Core2 Duo T7200 CPU, 2G RAM, i686 arch. Latest FC7 stuff from development repo.
I upgraded to 2.6.21-1.3142.fc7 and the problem is still present.
Based on the date this bug was created, it appears to have been reported against rawhide during the development of a Fedora release that is no longer maintained. In order to refocus our efforts as a project we are flagging all of the open bugs for releases which are no longer maintained. If this bug remains in NEEDINFO thirty (30) days from now, we will automatically close it. If you can reproduce this bug in a maintained Fedora version (7, 8, or rawhide), please change this bug to the respective version and change the status to ASSIGNED. (If you're unable to change the bug's version or status, add a comment to the bug and someone will change it for you.) Thanks for your help, and we apologize again that we haven't handled these issues to this point. The process we're following is outlined here: http://fedoraproject.org/wiki/BugZappers/F9CleanUp We will be following the process here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping to ensure this doesn't happen again.
This bug has been in NEEDINFO for more than 30 days since feedback was first requested. As a result we are closing it. If you can reproduce this bug in the future against a maintained Fedora version please feel free to reopen it against that version. The process we're following is outlined here: http://fedoraproject.org/wiki/BugZappers/F9CleanUp
I have encountered this problem on Fedora 11. I am following the instructions at: https://fedoraproject.org/wiki/Kernel/kdump.. When I get to the point where I do "echo c > /proc/sysrq-trigger" the box just freezes and no dump kernel is loaded. It just sits there until I reset it.
Reopened as bug 513800