Encountering problems during the build

[Niloss]

Hi !

I read your article (https://www.vusec.net/projects/drammer/) and wanted to see how was this Rowhammer simulator. ... but I got errors earlier than I thought.

Following the steps described in "How do I get setup ?", I thought my dependencies were ok, but when I launch :

$ make demo

I encountered the following error :

in hammertime/perfev-util :

gcc -std=gnu99 -Wall - Wpedantic -O2 -fPIC -c perfev.c

perferv.c : In function 'attach' :
perfev.c:45:62: 'PERF_FLAG_FD_CLOEXEC' undeclared (first use in this function)
((flags & PERFEV_FLAG_CLOEXEC) ? PERF_FLAG_FD_CLOEXEC : 0);

and I can't figure out what is wrong :

• hammertime/perfev-util/perfev.h contains the line #include <linux/perf_event.h>
• uname -r returns "4.4.0-31-generic", so it is greater than 3.18
• and perfev.c:44 doen't raise an error with the use of PERF_FLAG_PID_CGROUP.

Does anyone have any idea of where my problem comes from ? I would be very grateful.
Thank you in advance !

Niloss

[andreittr]

That is odd, according to documentation, PERF_FLAG_FD_CLOEXEC appeared in Linux kernel 3.14 so you should be fine.
Are you using older kernel headers by any chance?

[Niloss]

Thank you for your response, and sorry for having been late.

I tried

$ sudo apt-get install linux-headers-$(uname -r)

and got :

linux-headers-4.4.0-31-generic is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.

I don't have a lot of time to try again right now, but I will retry at the end of the week.
If I find what I have done wrong, I'll let you know.

Thank you again for your help :)