|Summary:||NFSv4 callback in gentoo-sources-4.9.16.|
|Product:||Gentoo Linux||Reporter:||Giuseppe Vitillaro <giuseppe>|
|Component:||Current packages||Assignee:||Gentoo Kernel Bug Wranglers and Kernel Maintainers <kernel>|
|Severity:||normal||CC:||burcheri.massimo+bugs-gentoo, gentoo, giuseppe|
|Package list:||Runtime testing required:||---|
Description Giuseppe Vitillaro 2017-05-07 09:46:24 UTC
I think we got this bug https://bugzilla.redhat.com/show_bug.cgi?id=1427493 in the current gentoo-sources-4.9.16 stable gentoo kernel. I'm using autofs in many of my systems and I'm getting a number of this hanging kernel threads, which can not be killed and may lead, eventually, to fill the kernel process table. I haven't see this problem before and I'm pretty sure it was not present in the previous gentoo-sources-4.4.39 stable kernel I've used in the last couple of months. This Fedora bug is the only reference to this bug I've found so far. For what I can understand, upstream patches are available for kernel 4.10.13, but, for what I'm reading, they are still under review.
Comment 1 Giuseppe Vitillaro 2017-05-07 10:32:26 UTC
The patches: https://www.spinics.net/lists/linux-nfs/msg61696.html https://www.spinics.net/lists/linux-nfs/msg61697.html seems to apply correctly to the gentoo-sources-4.9.16 stable kernel. I had been able to build and boot a 4.9.16 kernel with these patches applied and nfs server seems to work correctly. Only time may say if these patches actually solve the issue without introducing some new problem.
Comment 2 Giuseppe Vitillaro 2017-05-09 10:56:15 UTC
My last comment on this topic. The patches seems to have solved the problem when applied to "NFS clients". In 3 days I haven't seen any other hanging callback thread and no other evident problem so far in 3 of my NFS Gentoo systems By the way: I don't think an "emerge --info" output would make any difference for such a problem. Regards, G. Vitillaro
Comment 3 Massimo Burcheri 2017-06-13 10:58:55 UTC
Comment 4 Alice Ferrazzi 2017-06-16 16:43:36 UTC
Hello Giuseppe, (In reply to Giuseppe Vitillaro from comment #2) > My last comment on this topic. > > The patches seems to have solved the problem when applied to "NFS clients". > > In 3 days I haven't seen any other hanging callback thread and no other > evident problem so far in 3 of my NFS Gentoo systems Thanks for reporting this bug. > > By the way: I don't think an "emerge --info" output would make any > difference for such a problem. emerge --info is something that we ask by default to add to a bug request and that would be better to add in all bugs request (Gentoo kernel or not). But yes in this case would be of little difference. > > Regards, G. Vitillaro Thanks, Alice
Comment 5 Mike Pagano 2018-06-13 13:50:07 UTC
Patches are included in recent kernels.