Is there a way to set kptr_restrict to 0?

linux, linux-kernel, perf

Solution

In your example, `echo` is running as root, but your shell is running as you.

So please try this command:

sudo sh -c " echo 0 > /proc/sys/kernel/kptr_restrict"

Problem

I am currently having trouble running linux perf, mostly because `/proc/sys/kernel/kptr_restrict` is currently set to 1. However, if I try to `/proc/sys/kernel/kptr_restrict` by echoing 0 to it as follows... ``` echo 0 > /proc/sys/kernel/kptr_restrict ``` I get a permission denied error. I don't think I can change permissions on it either. Is there a way to set this directly somehow? I am super user. I don't think perf will function acceptably without this being set.

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