Ubuntu
linux-riscv package

  1. Impish (21.10)
  2. Bug #1905728
  3. Comment #6

Comment 6 for bug 1905728

Revision history for this message
Thadeu Lima de Souza Cascardo (cascardo) wrote : Re: Found insecure W+X mapping at address on Groovy RISCV

This is not a regression and has been this way since the dawn of 5.8 riscv, as we have CONFIG_STRICT_KERNEL_RWX set.

When investigating, I see many fixes that involve the linker script, so I assume this is due to some sections, like init sections carrying both text and data, which could cause this.

I tried picking a lot of commits, and needed to either do extensive backports or carry a lot of commits, and still without success, hitting a linker problem that would require carrying even more fixes.

So, contrary to what has been said about 5.8 bringing up STRICT_KERNEL_RWX to riscv, this is really not ready for prime time, and should be left for future versions.

TL;DR: We should just disable CONFIG_STRICT_KERNEL_RWX on linux-riscv 5.8.

Cascardo.