Thanks. I checked my code again to see where I open files but not closing them. The error was due to opening the xc interface (xc_interface_open()) and not closing it via xc_interface_close().
On Mon, Sep 12, 2016 at 2:12 PM, Razvan Cojocaru <rcojoc...@bitdefender.com> wrote: > > I am using xen-access to write protect a lot of gfns of the machine, and > > listen to each gfn which is going to be written. For each gfn that is > > accessed for write operation I create a thread to copy its content after > > a short period of time. > > I have got the following event as I create a thread for each gfn which > > is being written by the user: > > error: Could not obtain handle on privileged command interface : Too > > many open files > > What could cause this as my xen-access program crashes and Segmentation > > fault (core dumped) occurs. > > You're not able to open /dev/xen/privcmd (or /proc/xen/privcmd, see > tools/libs/call/linux.c - I assume you're using Linux), because you have > reached the limit of simultaneously open files that your operating > system will allow. > > Try closing some of the handles / files that your application opens. > Even thread handles matter. > > > HTH, > Razvan >
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