Linux 5.6 new warning for hdhomerun_record regarding executable stack

[gtb]

With LInux 5.6 commit 47a2ebb7f5 a new warning from the kernel has been added of the form:

process '/usr/bin/hdhomerun_record' started with executable stack

The kernel git log documents some cases where code practices can result in this artifact (and, as I recall, uclibc has a configuration option regarding executable stacks).

If possible, not having an executable stack is typically considered desirable, even though without address space randomization it has limited benefits.

Thanks for the consideration.

[nickk]

I ran a series of checks and fixed one asm file in our code base which wasn't configured to indicate non-executable stack.

Unfortunately it looks like we will have to upgrade and recompile the toolchain to fix the gcc library... will look into that tomorrow.

Nick

[gtb]

Unfortunately it looks like we will have to upgrade and recompile the toolchain to fix the gcc library... will look into that tomorrow.

Ouch. Upgrading an entire tool-chain can require a lot of re-validation and certification in the embedded device world (and is why not so long ago I was aware of orgs stuck on things like gcc 2.95).

I did not really expect this to get attention for a while, so thanks for looking at this so quickly.