[CentOS] Firefox and Thunderbird freeze/crash followed by "nfs4_reclaim_open_state: Lock reclaim failed!" syslog messages

Wed Jun 6 21:49:04 UTC 2018
James Pearson <james-p at moving-picture.com>

Frank Thommen wrote:
> Hi,
> since I updated my workstation from CentOS 7.4 to 7.5, Firefox and
> Thunderbird (both 52.8.0, from CentOS repos) regularly freeze (or crash)
> and cannot be restarted afterwards.  Trying to start them results in a
> "Bus error (core dumped)" (Firefox) and "Killed" (Thunderbird).  The
> system log then shows:
>       kernel: NFS: nfs4_reclaim_open_state: Lock reclaim failed!
> each time I try to start the applications (our homedirectories are
> mounted via NFS4).  As far as I can see, no other applications are
> affected.  The workstation needs to be rebooted to fix the situation.
> Has anyone else seen that or knows how to debug or fix this issue? I
> tried with strace and wireshark w/o finding anything helpful.

I'm not sure what the el7 default for the Firefox 
'storage.nfs_filesystem' pref is - but you could try setting it to 
'true' to see if that makes a difference ?

James Pearson