Public bug reported:
Upgraded a NFS client to 14.10. Server is running FreeBSD 10.0, no
changes on server from when client was running 14.04. Client is using
NFSv3 over TCP.
Client hosts virtual machines - first virtual machine starts ok, second
virtual machine starts but machine needs to fsck and reports timeouts,
left overnight still cannot complete fsck. A simple "ls" of the NFS
share hangs.
3.16.0-22-generic kernel kern.log generates warning and the Oops with
null pointer dereference (see attached).
Tried mainline 3.16.6-031606-generic with same result (see attached).
Same behaviour, fsck never finishes and ls hangs.
Tried mainline 3.14.22-031422-generic and problem is gone, fsck finishes
in several seconds, no problems with ls, machine and VMs running
normally since.
** Affects: linux-meta (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1384659
Title:
NFSv3/TCP in 14.10 major issues and kernel NULL pointer dereference
Status in “linux-meta” package in Ubuntu:
New
Bug description:
Upgraded a NFS client to 14.10. Server is running FreeBSD 10.0, no
changes on server from when client was running 14.04. Client is using
NFSv3 over TCP.
Client hosts virtual machines - first virtual machine starts ok,
second virtual machine starts but machine needs to fsck and reports
timeouts, left overnight still cannot complete fsck. A simple "ls" of
the NFS share hangs.
3.16.0-22-generic kernel kern.log generates warning and the Oops with
null pointer dereference (see attached).
Tried mainline 3.16.6-031606-generic with same result (see attached).
Same behaviour, fsck never finishes and ls hangs.
Tried mainline 3.14.22-031422-generic and problem is gone, fsck
finishes in several seconds, no problems with ls, machine and VMs
running normally since.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-meta/+bug/1384659/+subscriptions
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