From: "Alexei Starovoitov" <alexei.starovoitov@gmail.com>
To: "Kang Chen" <k.chen@smail.nju.edu.cn>,
"Yonghong Song" <yonghong.song@linux.dev>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"Andrii Nakryiko" <andrii@kernel.org>,
"Eduard Zingerman" <eddyz87@gmail.com>,
"Kumar Kartikeya Dwivedi" <memxor@gmail.com>
Cc: <bpf@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH bpf 2/2] selftests/bpf: Test that a drained task_vma iterator keeps returning NULL
Date: Fri, 13 Nov 2026 04:27:41 +0000 [thread overview]
Message-ID: <DMTSS10JMVNJ.VGHU9E75OZ5@gmail.com> (raw)
In-Reply-To: <20261113024500.922824-2-k.chen@smail.nju.edu.cn>
On Thu, Nov 12, 2026 at 06:45 PM Kang Chen <k.chen@smail.nju.edu.cn> 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
prev parent reply other threads:[~2026-11-13 4:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-13 2:44 [PATCH bpf 1/2] bpf: make task_vma iterator stay drained after NULL Kang Chen
2026-11-13 2:45 ` [PATCH bpf 2/2] selftests/bpf: Test that a drained task_vma iterator keeps returning NULL Kang Chen
2026-11-13 4:27 ` Alexei Starovoitov [this message]
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