Re: [PATCH 6.6.y 5/6] binfmt_elf: Only report padzero() errors when PROT_WRITE

[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: f9c0a39d95301a36baacfd3495374c6128d662fa

WARNING: Author mismatch between patch and upstream commit:
Backport author: Kang Wenlin<wenlin.kang@windriver.com>
Commit author: Kees Cook<keescook@chromium.org>

Status in newer kernel trees:
6.13.y | Present (exact SHA1)
6.12.y | Present (exact SHA1)

Note: The patch differs from the upstream commit:
---
1:  f9c0a39d95301 ! 1:  d7251c2864622 binfmt_elf: Only report padzero() errors when PROT_WRITE
    @@ Metadata
      ## Commit message ##
         binfmt_elf: Only report padzero() errors when PROT_WRITE
     
    +    commit f9c0a39d95301a36baacfd3495374c6128d662fa upstream
    +
         Errors with padzero() should be caught unless we're expecting a
         pathological (non-writable) segment. Report -EFAULT only when PROT_WRITE
         is present.
    @@ Commit message
         Signed-off-by: Sebastian Ott <sebott@redhat.com>
         Link: https://lore.kernel.org/r/20230929032435.2391507-5-keescook@chromium.org
         Signed-off-by: Kees Cook <keescook@chromium.org>
    +    Signed-off-by: Wenlin Kang <wenlin.kang@windriver.com>
     
      ## fs/binfmt_elf.c ##
     @@ fs/binfmt_elf.c: static struct linux_binfmt elf_format = {
---

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-6.12.y       |  Success    |  Success   |