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Fri, 30 Oct 2026 06:08:33 -0700 (PDT) From: Jiri Olsa X-Google-Original-From: Jiri Olsa Date: Fri, 30 Oct 2026 14:08:30 +0100 To: bot+bpf-ci@kernel.org Cc: ast@kernel.org, daniel@iogearbox.net, bpf@vger.kernel.org, linux-mm@kvack.org, andrii@kernel.org, eddyz87@gmail.com, memxor@gmail.com, ljs@kernel.org, john.fastabend@gmail.com, nierro92@gmail.com, martin.lau@kernel.org, yonghong.song@linux.dev, mason@kernel.org, ihor.solodrai@linux.dev Subject: Re: [PATCH bpf-next 8/8] selftests/bpf: Test user memory kfunc errors Message-ID: References: <20261029212551.56964-9-jolsa@kernel.org> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 06B5F18000E X-Stat-Signature: 14fm96ngkh87rqmp5biwjb7eu5dt8jes X-Rspam-User: X-Spam-Status: No, score=-7.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_PASS,SPF_PASS autolearn=no autolearn_force=no version=4.0.1 X-HE-Tag: 1793365714-154467 X-HE-Meta: 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 Bmo6jCsy 4O/VKHlNyy43IDQJfwgGpC/ic+yqGPTELk4puCc30cUan6UXKycDi9W0iBUS4HiHYjRWvCGHBpmbBGp9XNMOcMXhg7e7M9psvbUeeqypPUoJ8lLH/OcUW3NGdE/Y7WsT0nfCQpheEUI4/lArd+eMRgs/lWEL+flowVw4WBqFoBUszC4Us1ZlCS4S64cj3sEy+FcQDuC3s9dZrVHxN9VdCqS+bcVjCYXbwu+N7kMVedqAS+l3HjBEKJB+rYMH30GZ/9HrrwT2QHB+1MH3J3m+MpPyEvVtrvWGyEUQKJVGaT282EP97MGywzw9UHy8XawKsiO2sTMY5sw8fsoqKZEL4QDvlnaWcbl+NJA1+ziFAssvrZxghMlKLOZrqMzbBa8fwpQBk4qVUewhRLQo/cQbg0ahgise7FxqFmGujkmjW+Wxge2+yQXDwBYz2e3ozvE+yAikP0GG0HilKu8YtgjMxRXPTxuD6Ga3Vob4hsZaVmRsloKuRz1uuCaAQmMjmvDPpmkZv7ul6WxjEHec8i65DO0N99bPb9MjCxYgAaKoG55qY7DelmZ46AF/sv3iTAUP7faGRGvklV8FmzSQnfZyFYSEGWLh2stVICv/gJpRq8lmTsAs= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Thu, Oct 29, 2026 at 09:59:33PM +0000, bot+bpf-ci@kernel.org wrote: > > selftests/bpf: Test user memory kfunc errors > > TL;DR: Commit message only: it claims tests for partial copy faults and > read-only mappings that were added by the previous patch, and omits the new > RUN_TESTS(user_mem) verifier-failure tests. > > > selftests/bpf: Test user memory kfunc errors > > > > Test invalid copy arguments, zero-length mapping operations, partial copy > > faults, and copying to read-only mappings. Verify that a failed unmap > > leaves the mapping intact, and that non-sleepable programs and programs > > without CAP_SYS_ADMIN cannot call bpf_user_mmap. > > > > Assisted-by: Codex:GPT-6 > > Signed-off-by: Jiri Olsa > > The changelog says this commit tests "partial copy faults, and copying to > read-only mappings". Is that accurate for this patch? > > test_partial_copy_fault() and test_copy_to_readonly_mapping() were added by > the previous commit 8f0bac0f80cd ("selftests/bpf: Test bpf_copy_to_user > kfunc"), whose changelog already describes them, and this diff does not touch > them. > > What this diff adds is test_zero_length_mapping(), test_failed_unmap(), > test_invalid_copy(), the three verifier-failure programs > (user_mem_nonsleepable, user_mem_kprobe and user_mem_no_sysadmin), and the > RUN_TESTS(user_mem) call that runs them. > > The changelog also does not mention RUN_TESTS(user_mem), which turns the > existing user_mem_test program into a privileged load-only subtest. > > Could the changelog be reworded to describe what this patch adds? yep, will fix jirka