Re: [PATCH 5.15 8/9] arm64: bpf: Only mitigate cBPF programs loaded by unprivileged users

[Sasha Levin <sashal@kernel.org>]

[ Sasha's backport helper bot ]

Hi,

✅ All tests passed successfully. No issues detected.
No action required from the submitter.

The upstream commit SHA1 provided is correct: f300769ead032513a68e4a02e806393402e626f8

WARNING: Author mismatch between patch and upstream commit:
Backport author: Pu Lehui<pulehui@huaweicloud.com>
Commit author: James Morse<james.morse@arm.com>

Status in newer kernel trees:
6.15.y | Present (exact SHA1)
6.14.y | Present (different SHA1: 477481c43482)
6.12.y | Present (different SHA1: e5f5100f1c64)
6.6.y | Present (different SHA1: 80251f62028f)
6.1.y | Present (different SHA1: 6e52d043f7db)

Note: The patch differs from the upstream commit:
---
1:  f300769ead032 ! 1:  238fedf68f1c7 arm64: bpf: Only mitigate cBPF programs loaded by unprivileged users
    @@ Metadata
      ## Commit message ##
         arm64: bpf: Only mitigate cBPF programs loaded by unprivileged users
     
    +    [ Upstream commit f300769ead032513a68e4a02e806393402e626f8 ]
    +
         Support for eBPF programs loaded by unprivileged users is typically
         disabled. This means only cBPF programs need to be mitigated for BHB.
     
    @@ Commit message
         Signed-off-by: James Morse <james.morse@arm.com>
         Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
         Acked-by: Daniel Borkmann <daniel@iogearbox.net>
    +    Signed-off-by: Pu Lehui <pulehui@huawei.com>
     
      ## arch/arm64/net/bpf_jit_comp.c ##
     @@ arch/arm64/net/bpf_jit_comp.c: static void __maybe_unused build_bhb_mitigation(struct jit_ctx *ctx)
---

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-6.1.y        |  Success    |  Success   |