Red Hat Bugzilla – Bug 207314
Oops/lockup in anon_vma_link()
Last modified: 2007-11-30 17:11:43 EST
Description of problem:
Oops while trying to reproduce Bug 206813.
Version-Release number of selected component (if applicable):
Did not try.
Steps to Reproduce:
1. EF_ALLOW_MALLOC_0=1 LD_PRELOAD=/usr/lib/libefence.so gdb ./bla
2. b inner_main
4. On (incorrect) "guile> " prompt try to CTRL-C/kill gdb.
Attached oops, ps(1) commands and others start locking up.
This kernel has still many crashes on SMP, it runs fine with "maxcpus=1".
Created attachment 136755 [details]
Hi Jan, I'm having trouble reproducing this (kernel-2_6_18-1_2725_el5 i686 UP).
[root@plop ~]# wc -l /proc/`pidof gdb`/maps
[root@plop ~]# wc -l /proc/`pidof bla`/maps
which is a lot but not unexpected given ElectricFence.
Would you mind trying if you can reproduce with a recent FC/RHEL kernel?
Unable to reproduce it myself, tried only on kernel-xen-2.6.18-1.2747.fc6.i686,
though (the original bugreport was against native non-XEN kernel).
Even the common crashes for SMP / maxcpus>1 got fixed even on non-XEN kernels
since that time so it could be just a consequence.
Thanks for the reproducibility attempt. It could be probablt also CLOSED as RAWHIDE.