From: Eduard Zingerman <eddyz87@gmail.com>
To: Kumar Kartikeya Dwivedi <memxor@gmail.com>, bpf@vger.kernel.org
Cc: Tejun Heo <tj@kernel.org>, Alexei Starovoitov <ast@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Emil Tsalapatis <emil@etsalapatis.com>,
kkd@meta.com, kernel-team@meta.com
Subject: Re: [PATCH bpf-next v3 9/9] selftests/bpf: Test stack-passed struct_ops arena arguments
Date: Wed, 05 Aug 2026 01:00:59 -0700 [thread overview]
Message-ID: <b94080a4d2804778a2bf6c4d588a5d2fa7860a6d.camel@gmail.com> (raw)
In-Reply-To: <20260803125115.2264733-10-memxor@gmail.com>
On Mon, 2026-08-03 at 14:51 +0200, Kumar Kartikeya Dwivedi wrote:
> From: Tejun Heo <tj@kernel.org>
>
> Add a test_arena_stack member with eight leading scalar arguments so the
> arena pointer is passed on the stack.
>
> The callback validates the first and last scalar ctx slots before
> dereferencing the pointer in ctx[8]. This exercises the indirect
> trampoline stack layout and arena conversion together, and prevents a
> regression where stack arguments are read one slot late.
>
> Signed-off-by: Tejun Heo <tj@kernel.org>
> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
> ---
Tested-by: Eduard Zingerman <eddyz87@gmail.com>
prev parent reply other threads:[~2026-08-05 8:01 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-03 12:51 [PATCH bpf-next v3 0/9] Add arena argument support to kfuncs and struct_ops Kumar Kartikeya Dwivedi
2026-08-03 12:51 ` [PATCH bpf-next v3 1/9] bpf: Support __arena and __arena_nullable kfunc argument suffixes Kumar Kartikeya Dwivedi
2026-08-03 13:19 ` sashiko-bot
2026-08-04 17:42 ` Amery Hung
2026-08-05 15:53 ` Kumar Kartikeya Dwivedi
2026-08-05 17:07 ` Amery Hung
2026-08-05 17:16 ` Kumar Kartikeya Dwivedi
2026-08-05 15:55 ` Kumar Kartikeya Dwivedi
2026-08-03 12:51 ` [PATCH bpf-next v3 2/9] bpf: Support __arena and __arena_nullable on struct_ops arguments Kumar Kartikeya Dwivedi
2026-08-03 14:19 ` sashiko-bot
2026-08-04 23:55 ` Eduard Zingerman
2026-08-05 5:14 ` Eduard Zingerman
2026-08-05 17:31 ` Amery Hung
2026-08-05 17:36 ` Kumar Kartikeya Dwivedi
2026-08-03 12:51 ` [PATCH bpf-next v3 3/9] bpf, x86: JIT __arena kfunc argument rebasing Kumar Kartikeya Dwivedi
2026-08-05 0:40 ` Eduard Zingerman
2026-08-03 12:51 ` [PATCH bpf-next v3 4/9] bpf, x86: Convert struct_ops arena arguments in the trampoline Kumar Kartikeya Dwivedi
2026-08-03 12:51 ` [PATCH bpf-next v3 5/9] selftests/bpf: Add kfunc __arena and __arena_nullable argument tests Kumar Kartikeya Dwivedi
2026-08-03 13:35 ` sashiko-bot
2026-08-04 20:01 ` Eduard Zingerman
2026-08-04 20:14 ` Kumar Kartikeya Dwivedi
2026-08-04 20:24 ` Eduard Zingerman
2026-08-04 20:26 ` Eduard Zingerman
2026-08-04 20:28 ` Kumar Kartikeya Dwivedi
2026-08-04 20:33 ` Eduard Zingerman
2026-08-04 20:36 ` Eduard Zingerman
2026-08-03 12:51 ` [PATCH bpf-next v3 6/9] selftests/bpf: Add JIT-sequence tests for __arena kfunc arguments Kumar Kartikeya Dwivedi
2026-08-03 13:35 ` sashiko-bot
2026-08-05 5:43 ` Eduard Zingerman
2026-08-03 12:51 ` [PATCH bpf-next v3 7/9] selftests/bpf: Add struct_ops __arena and __arena_nullable argument tests Kumar Kartikeya Dwivedi
2026-08-03 13:39 ` sashiko-bot
2026-08-05 6:52 ` Eduard Zingerman
2026-08-03 12:51 ` [PATCH bpf-next v3 8/9] bpf, x86: Fix stack-passed arguments for indirect trampolines Kumar Kartikeya Dwivedi
2026-08-03 13:42 ` sashiko-bot
2026-08-05 8:00 ` Eduard Zingerman
2026-08-03 12:51 ` [PATCH bpf-next v3 9/9] selftests/bpf: Test stack-passed struct_ops arena arguments Kumar Kartikeya Dwivedi
2026-08-05 8:00 ` Eduard Zingerman [this message]
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