Re: [PATCH RESEND 0/3] x86/vdso: Improve vdso=/vdso32= boot parameter validation

[Habil Eren Türker]

On Mon Aug 31 2026 at 12:16:58PM +0200 Thorsten Blum wrote:
> Replace the deprecated simple_strtoul() [1] with kstrtouint() when
> parsing the vDSO boot parameters. This provides strict input validation,
> rejects partial input, and warns when disabling vDSO for invalid values.

> Adjust both warnings for consistency and update the documentation.

I took time to review and test your series on top of v7.3-rc5. 
Both the code and the runtime behaviour look correct to me:

Code review:
  - kstrtouint() preserves the original semantics of simple_strtoul()
    while adding proper overflow checking.
  - Error paths are consistent with the existing vdso_setup() logic.
  - The documentation removal for vdso32=2 is accurate.

Runtime testing:
  - x86_64 QEMU/q35 guest, TCG acceleration, qemu64 CPU model
  - KASAN profile (KASAN + KFENCE + DEBUG_OBJECTS)
  - memory suite at 256M/512M/1G, 3 iterations per case
  - All cases pass, no KASAN/KCSAN/lockdep findings, CRIT_ERRORS=0

Reviewed-by: Habil Eren Türker <habilerenturker@xxxxxxxxxxx>
Tested-by: Habil Eren Türker <habilerenturker@xxxxxxxxxxx>

Regards,
Türker