Because we run a modified kernel, it would be inconvenient to need to install a vanilla system in order to verify the fix there. Etienne has/had a vanilla setup reproducing the bug. I can confirm that the patch successfully solves the problem for our kernel.
Thomas On Thu, Jan 13, 2011 at 8:34 AM, Steve Conklin <683...@bugs.launchpad.net>wrote: > This bug is awaiting verification that the kernel in -proposed solves > the problem. Please test the kernel and update this bug with the > results. If the problem is solved, change the tag 'verification-needed' > to 'verification-done'. > > If verification is not done by one week from today, this fix will be > dropped from the source code, and this bug will be closed. > > See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how > to enable and use -proposed. Thank you! > > -- > You received this bug notification because you are a direct subscriber > of the bug. > https://bugs.launchpad.net/bugs/683938 > > Title: > kernel crash on symlink chased from NFS to failing automount > > Status in The Linux Kernel: > Unknown > Status in “linux” package in Ubuntu: > Fix Released > Status in “linux” source package in Lucid: > Fix Committed > Status in “linux” source package in Maverick: > Fix Committed > Status in “linux” source package in Natty: > Fix Released > > Bug description: > SRU justification: > > Impact: When trying to mount an export where server and client have no > common authentication method, the client will abort the mount by > sending an advisory unmount message to the server. A bug in the RPC > client setup causes the sunrpc code to access memory outside an > allocated array, which will sooner or later cause the kernel to crash. > > Fix: Patch from upstream (about to be submitted and targeted for > stable too) changes the setup to use the actual array size instead of > a manually entered number. > > Testcase: > > Server exports a mount with an authentication method the client does not > support, eg.: > [/etc/exports] /srv/foo *(rw,sec=krb5) > > Client tries to mount this directory with no special authentication > method: > while true; do mount <server>:/srv/foo /mnt; sync; sleep 1; done > > --- > > Create an automount indirect map entry to a nfs server that will deny the > mount with a permission denied error. > Create a symlink on some mounted NFS partition pointing at the name of > that automount indirect map entry. > Chase the symlink with ls, etc. > Notice that the automounter tries and fails to mount the partition. > (visible with automount -d -f, say) > > In a few minutes, depending on system activity, the kernel will crash > with the symptoms of a memory corruption error. > > To unsubscribe from this bug, go to: > https://bugs.launchpad.net/linux/+bug/683938/+subscribe > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/683938 Title: kernel crash on symlink chased from NFS to failing automount -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
