Red Hat Bugzilla – Bug 447752
[glibc] Frequent segfaults in libresolv-2.8.90.so
Last modified: 2008-05-25 04:29:39 EDT
Description of problem:
After upgrading to glibc-2.8.90, network is heavily affected by
a dysfunctional DNS service. Host names often fail to get resolved.
SSH connections always fail after a short period of time. This
even applies to the latest koji build.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Open web browser.
2. Open URL.
Often an error message about an unknown server name appears
as if the server was down, or the name didn't get resolved
URL is loaded properly.
- Latency is high, and often one has to reload a web page several
times to have it eventually be displayed.
- Regarding the SSH problems, I have spotted a related error message
ssh: segfault at 3 ip f063a9 sp 7fff1d20dc40 error 4 in
I have downgraded temporarily to glibc-2.8 and one of the stable F9
kernel. The segfault in libresolv-2.8.90.so disappears by doing so.
However, all other symptoms remain. After installing madwifi to
override the system default ath5k driver, network connectivity improves
a lot which points to a serious regression in the ath5 driver which is
responsible for the SSH drop-outs etc. This also explains why even the
latest glibc-2.8.90-4 hadn't brought much improvement.
No issue for kernels < 188.8.131.52-26.fc9, thus related to ath5k and
unlikely to depend on glibc-2.8.90.
*** This bug has been marked as a duplicate of 448180 ***