Re: [PATCH v3 bpf-next 1/2] bpf, x86: Improve PROBE_MEM runtime load check

[patchwork-bot+netdevbpf@kernel.org]

Hello:

This series was applied to bpf/bpf-next.git (master)
by Daniel Borkmann <daniel@iogearbox.net>:

On Fri, 16 Dec 2022 13:43:18 -0800 you wrote:
> This patch rewrites the runtime PROBE_MEM check insns emitted by the BPF
> JIT in order to ensure load safety. The changes in the patch fix two
> issues with the previous logic and more generally improve size of
> emitted code. Paragraphs between this one and "FIX 1" below explain the
> purpose of the runtime check and examine the current implementation.
> 
> When a load is marked PROBE_MEM - e.g. due to PTR_UNTRUSTED access - the
> address being loaded from is not necessarily valid. The BPF jit sets up
> exception handlers for each such load which catch page faults and 0 out
> the destination register.
> 
> [...]

Here is the summary with links:
  - [v3,bpf-next,1/2] bpf, x86: Improve PROBE_MEM runtime load check
    https://git.kernel.org/bpf/bpf-next/c/90156f4bfa21
  - [v3,bpf-next,2/2] selftests/bpf: Add verifier test exercising jit PROBE_MEM logic
    https://git.kernel.org/bpf/bpf-next/c/59fe41b5255f

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html