Red Hat Bugzilla – Bug 208149
Kernel panic when NFS request comes
Last modified: 2015-01-04 17:28:48 EST
Description of problem:
The most recent FC6 kernel crashes for me as soon as an NFS request comes in
from a client.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. On a client, access any file mounted by NFS from the server that crashes
I do not have this problem with kernel-2.6.17-1.2174_FC5.x86_64, it came with
the latest update.
Not every userspace program is completely up-to-date, but I believe relevant
packages are. In particular, I do have nfs-utils-1.0.8-3.fc5.x86_64. (And of
course everything the kernel RPM required.)
I used kdump and attach a backtrace. (Read using crash from FC6T3, the one in
FC5 I got the "cannot resolve cpu_pda" error mentioned in the entry for 4.0-2.20
Created attachment 137151 [details]
Backtrace as given by "crash"
I comfirmed this bug. I have a i386 FC5 with updated kernel
kernel-smp-2.6.17-1.2187_FC5, and when NFS client accesses any file mounted from
the server, the NFS server crashes.
kernel-smp-2.6.17-1.2174_FC5 works without any problem.
Can you retry this with the 2.6.18 kernel from updates-testing ?
There were quite a few GSO fixes in that kernel, which may fix this.
I don't see the problem any more with 2.6.18-1.2189.fc5. :-) I've only been
running it for a couple of minutes, but it seems to run just fine.
No problem here for kernel 2.6.18-1.2189.fc5smp.
A new kernel update has been released (Version: 2.6.18-1.2200.fc5)
based upon a new upstream kernel release.
Please retest against this new kernel, as a large number of patches
go into each upstream release, possibly including changes that
may address this problem.
This bug has been placed in NEEDINFO state.
Due to the large volume of inactive bugs in bugzilla, if this bug is
still in this state in two weeks time, it will be closed.
Should this bug still be relevant after this period, the reporter
can reopen the bug at any time. Any other users on the Cc: list
of this bug can request that the bug be reopened by adding a
comment to the bug.
In the last few updates, some users upgrading from FC4->FC5
have reported that installing a kernel update has left their
systems unbootable. If you have been affected by this problem
please check you only have one version of device-mapper & lvm2
installed. See bug 207474 for further details.
If this bug is a problem preventing you from installing the
release this version is filed against, please see bug 169613.
If this bug has been fixed, but you are now experiencing a different
problem, please file a separate bug for the new problem.
2.6.18-1.2200.fc5 looks good.