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 v3 bpf-next 03/10] bpf: fix check for attempt to corrupt spilled pointer
Date: Tue, 05 Dec 2023 00:15:31 +0200 [thread overview]
Message-ID: <2574f94d97b57f1816af4ae33f2698cc9d2658dc.camel@gmail.com> (raw)
In-Reply-To: <3fca38fdfd975f735e3dd31930637cfbc70948f4.camel@gmail.com>
On Tue, 2023-12-05 at 00:12 +0200, Eduard Zingerman wrote:
[...]
> diff --git a/tools/testing/selftests/bpf/test_loader.c b/tools/testing/selftests/bpf/test_loader.c
> index a350ecdfba4a..a5ad6b01175e 100644
> --- a/tools/testing/selftests/bpf/test_loader.c
> +++ b/tools/testing/selftests/bpf/test_loader.c
> @@ -430,7 +430,7 @@ struct cap_state {
> static int drop_capabilities(struct cap_state *caps)
> {
> const __u64 caps_to_drop = (1ULL << CAP_SYS_ADMIN | 1ULL << CAP_NET_ADMIN |
> - 1ULL << CAP_PERFMON | 1ULL << CAP_BPF);
> + 1ULL << CAP_PERFMON /*| 1ULL << CAP_BPF */);
> int err;
>
> err = cap_disable_effective(caps_to_drop, &caps->old_caps);
(Here I hack test_loader so that unpriv run has CAP_BPF,
the test could be run as follows:
./test_progs -vvv -a 'verifier_basic_stack/spill_lo32_write_hi32 @unpriv')
next prev parent reply other threads:[~2023-12-04 22:15 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-04 19:25 [PATCH v3 bpf-next 00/10] Complete BPF verifier precision tracking support for register spills Andrii Nakryiko
2023-12-04 19:25 ` [PATCH v3 bpf-next 01/10] bpf: support non-r10 register spill/fill to/from stack in precision tracking Andrii Nakryiko
2023-12-04 19:25 ` [PATCH v3 bpf-next 02/10] selftests/bpf: add stack access precision test Andrii Nakryiko
2023-12-04 19:25 ` [PATCH v3 bpf-next 03/10] bpf: fix check for attempt to corrupt spilled pointer Andrii Nakryiko
2023-12-04 22:12 ` Eduard Zingerman
2023-12-04 22:15 ` Eduard Zingerman [this message]
2023-12-05 0:23 ` Andrii Nakryiko
2023-12-05 0:54 ` Eduard Zingerman
2023-12-05 3:56 ` Andrii Nakryiko
2023-12-05 13:34 ` Eduard Zingerman
2023-12-05 18:30 ` Andrii Nakryiko
2023-12-05 18:49 ` Eduard Zingerman
2023-12-05 18:55 ` Andrii Nakryiko
2023-12-05 1:45 ` Alexei Starovoitov
2023-12-05 3:50 ` Andrii Nakryiko
2023-12-04 19:25 ` [PATCH v3 bpf-next 04/10] bpf: preserve STACK_ZERO slots on partial reg spills Andrii Nakryiko
2023-12-04 19:25 ` [PATCH v3 bpf-next 05/10] selftests/bpf: validate STACK_ZERO is preserved on subreg spill Andrii Nakryiko
2023-12-04 19:25 ` [PATCH v3 bpf-next 06/10] bpf: preserve constant zero when doing partial register restore Andrii Nakryiko
2023-12-04 19:25 ` [PATCH v3 bpf-next 07/10] selftests/bpf: validate zero preservation for sub-slot loads Andrii Nakryiko
2023-12-04 19:25 ` [PATCH v3 bpf-next 08/10] bpf: track aligned STACK_ZERO cases as imprecise spilled registers Andrii Nakryiko
2023-12-04 19:26 ` [PATCH v3 bpf-next 09/10] selftests/bpf: validate precision logic in partial_stack_load_preserves_zeros Andrii Nakryiko
2023-12-04 19:26 ` [PATCH v3 bpf-next 10/10] bpf: use common instruction history across all states Andrii Nakryiko
2023-12-04 22:32 ` [PATCH v3 bpf-next 00/10] Complete BPF verifier precision tracking support for register spills Andrii Nakryiko
2023-12-04 23:02 ` Yonghong Song
2023-12-04 23:52 ` Andrii Nakryiko
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