On 05/09/2014 04:23 PM, Henrik /KaarPoSoft wrote:
On 05/09/2014 05:29 PM, David Smith wrote:
On 05/08/2014 05:34 PM, Henrik /KaarPoSoft wrote:
Here is how to reproduce:
Ah, that does reproduce the problem for me on a rawhide system (I
haven't tried other places). When I add you patch to task_dentry_path(),
it does get farther, but then I get a read fault. I'll have to dig deeper.
The patch is probably wrong, and I hope that someone more
knowledgeable than me may come up with a better one.
However, if I look at the comment about task_dentry_path in
https://sourceware.org/git/gitweb.cgi?p=systemtap.git;a=blob;f=tapset/linux/dentry.stp
it seems to me that is based on the kernel's d_path().
And the comment in the top of
http://lxr.free-electrons.com/source/fs/dcache.c#L3052
says something about "synthetic filesystems",
and just maybe this is doing something to overcome the problem.
Hmm, interesting. Thanks for the pointer.