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Thu, 12 Nov 2026 20:27:43 -0800 (PST) Received: from localhost ([153.61.198.248]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ee0f862426sm4061385ad.46.2026.11.12.20.27.42 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 12 Nov 2026 20:27:42 -0800 (PST) Content-Type: text/plain; charset=UTF-8 Date: Fri, 13 Nov 2026 04:27:41 +0000 Message-Id: Cc: , Subject: Re: [PATCH bpf 2/2] selftests/bpf: Test that a drained task_vma iterator keeps returning NULL From: "Alexei Starovoitov" To: "Kang Chen" , "Yonghong Song" , "Daniel Borkmann" , "Andrii Nakryiko" , "Eduard Zingerman" , "Kumar Kartikeya Dwivedi" In-Reply-To: <20261113024500.922824-2-k.chen@smail.nju.edu.cn> References: <20261113024500.922824-1-k.chen@smail.nju.edu.cn> <20261113024500.922824-2-k.chen@smail.nju.edu.cn> Content-Transfer-Encoding: 8bit X-Mailing-List: bpf@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 On Thu, Nov 12, 2026 at 06:45 PM Kang Chen wrote: > + addr = (void *)(unsigned long)skel->bss->last_end; > + ctx->addr = mmap(addr, getpagesize(), PROT_READ | PROT_WRITE, > + MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED_NOREPLACE, > + -1, 0); This mmap() fails when the test runs after attach_probe in the same test_progs process. You didn't even test your AI slop :( test_task_vma_iter_next_after_drain:FAIL:mmap new VMA unexpected error: 12 (errno 95) I'm tossing all of your patches out. Submit them all as one patch series and they better be tested this time. pw-bot: cr