linux-kernel - [PATCH bpf-next v2 0/3] bpf/verifier: Use kmalloc_size

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Message-Id: <20221029024444.gonna.633-kees@kernel.org>
Date:   Fri, 28 Oct 2022 19:54:29 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Alexei Starovoitov <ast@...nel.org>
Cc:     Kees Cook <keescook@...omium.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        John Fastabend <john.fastabend@...il.com>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Song Liu <song@...nel.org>, Yonghong Song <yhs@...com>,
        KP Singh <kpsingh@...nel.org>,
        Stanislav Fomichev <sdf@...gle.com>,
        Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        linux-kernel@...r.kernel.org, bpf@...r.kernel.org,
        linux-hardening@...r.kernel.org
Subject: [PATCH bpf-next v2 0/3] bpf/verifier: Use kmalloc_size_roundup() to match ksize() usage

v2:
- split up patch into logical changes
- simplify copy_array, which can use ksize() directly
v1: https://lore.kernel.org/all/20221018090550.never.834-kees@kernel.org/

Hi,

Here's the next version of removing the BPF verifier's dependency on the
side-effects of ksize(), so we can remove the special handling needed
for KASAN, UBSAN_BOUNDS, nor FORTIFY_SOURCE in ksize().

Thanks,

-Kees

Kees Cook (3):
  bpf/verifier: Fix potential memory leak in array reallocation
  bpf/verifier: Use kmalloc_size_roundup() to match ksize() usage
  bpf/verifier: Take advantage of full allocation sizes

 kernel/bpf/verifier.c | 44 ++++++++++++++++++++++++++++---------------
 1 file changed, 29 insertions(+), 15 deletions(-)

-- 
2.34.1