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Tue, 09 Jun 2026 11:08:07 -0700 (PDT) Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 09 Jun 2026 11:08:06 -0700 Message-Id: Cc: , , , , , Subject: Re: [PATCH bpf] selftests/bpf: Add BTF repeated field count overflow test From: "Alexei Starovoitov" To: "Eduard Zingerman" , "Paul Moses" , , , , , , X-Mailer: aerc References: In-Reply-To: On Tue Jun 9, 2026 at 9:47 AM PDT, Eduard Zingerman wrote: > On Tue, 2026-06-09 at 11:37 +0000, Paul Moses wrote: >> From 7129e266643883a4f83e65fce3ce20c7f7269fb3 Mon Sep 17 00:00:00 2001 >> From: Paul Moses >> Date: Tue, 9 Jun 2026 05:08:54 -0500 >> Subject: [PATCH bpf] selftests/bpf: Add BTF repeated field count overflo= w test >>=20 >> Add a raw BTF test that exercises repeated special-field expansion with = a >> large array count. The compact element layout keeps the array byte size >> representable while the repeated field count overflows the old u32 capac= ity >> calculation in btf_repeat_fields(). >>=20 >> Signed-off-by: Paul Moses >> --- > > Note that this selftest is depending on a fix: > https://lore.kernel.org/bpf/DJ4DWMO4HXCM.3NVLDGNT2704E@gmail.com/T/#t > W/o the fix KASAN warning is reported when executing the test. > > Tested-by: Eduard Zingerman Pls resubmit both together. pw-bot: cr