From: Eduard Zingerman <eddyz87@gmail.com>
To: Andrii Nakryiko <andrii@kernel.org>,
bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
martin.lau@kernel.org
Cc: kernel-team@meta.com
Subject: Re: [PATCH bpf-next 08/10] bpf: enforce precision of R0 on program/async callback return
Date: Wed, 22 Nov 2023 17:13:32 +0200 [thread overview]
Message-ID: <b9b6c388b7c3acf86650cff2f97f60cf362d1389.camel@gmail.com> (raw)
In-Reply-To: <20231122011656.1105943-9-andrii@kernel.org>
On Tue, 2023-11-21 at 17:16 -0800, Andrii Nakryiko wrote:
> Given we enforce a valid range for program and async callback return
> value, we must mark R0 as precise to avoid incorrect state pruning.
>
> Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
> ---
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
[...]
next prev parent reply other threads:[~2023-11-22 15:13 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-22 1:16 [PATCH bpf-next 00/10] BPF verifier retval logic fixes Andrii Nakryiko
2023-11-22 1:16 ` [PATCH bpf-next 01/10] bpf: rearrange bpf_func_state fields to save a bit of memory Andrii Nakryiko
2023-11-22 15:12 ` Eduard Zingerman
2023-11-22 1:16 ` [PATCH bpf-next 02/10] bpf: provide correct register name for exception callback retval check Andrii Nakryiko
2023-11-22 15:12 ` Eduard Zingerman
2023-11-23 1:44 ` Alexei Starovoitov
2023-11-24 3:39 ` Andrii Nakryiko
2023-11-22 1:16 ` [PATCH bpf-next 03/10] bpf: enforce precision of R0 on callback return Andrii Nakryiko
2023-11-22 15:12 ` Eduard Zingerman
2023-11-22 1:16 ` [PATCH bpf-next 04/10] bpf: enforce exact retval range on subprog/callback exit Andrii Nakryiko
2023-11-22 15:13 ` Eduard Zingerman
2023-11-22 17:45 ` Andrii Nakryiko
2023-11-27 10:55 ` Shung-Hsi Yu
2023-11-27 18:19 ` Andrii Nakryiko
2023-11-22 1:16 ` [PATCH bpf-next 05/10] selftests/bpf: add selftest validating callback result is enforced Andrii Nakryiko
2023-11-22 15:13 ` Eduard Zingerman
2023-11-22 17:46 ` Andrii Nakryiko
2023-11-22 1:16 ` [PATCH bpf-next 06/10] bpf: enforce precise retval range on program exit Andrii Nakryiko
2023-11-22 15:13 ` Eduard Zingerman
2023-11-22 1:16 ` [PATCH bpf-next 07/10] bpf: unify async callback and program retval checks Andrii Nakryiko
2023-11-22 15:13 ` Eduard Zingerman
2023-11-22 1:16 ` [PATCH bpf-next 08/10] bpf: enforce precision of R0 on program/async callback return Andrii Nakryiko
2023-11-22 15:13 ` Eduard Zingerman [this message]
2023-11-22 1:16 ` [PATCH bpf-next 09/10] selftests/bpf: validate async callback return value check correctness Andrii Nakryiko
2023-11-22 15:13 ` Eduard Zingerman
2023-11-22 1:16 ` [PATCH bpf-next 10/10] selftests/bpf: adjust global_func15 test to validate prog exit precision Andrii Nakryiko
2023-11-22 15:13 ` Eduard Zingerman
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