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