Re: [PATCH] bpf: Always use maximal size for copy_array()

From: patchwork-bot+netdevbpf
Date: Wed Dec 28 2022 - 18:20:24 EST


Hello:

This patch was applied to bpf/bpf.git (master)
by Alexei Starovoitov <ast@xxxxxxxxxx>:

On Fri, 23 Dec 2022 10:28:44 -0800 you wrote:
> Instead of counting on prior allocations to have sized allocations to
> the next kmalloc bucket size, always perform a krealloc that is at least
> ksize(dst) in size (which is a no-op), so the size can be correctly
> tracked by all the various allocation size trackers (KASAN,
> __alloc_size, etc).
>
> Reported-by: Hyunwoo Kim <v4bel@xxxxxxxxx>
> Link: https://lore.kernel.org/bpf/20221223094551.GA1439509@ubuntu
> Fixes: ceb35b666d42 ("bpf/verifier: Use kmalloc_size_roundup() to match ksize() usage")
> Cc: Alexei Starovoitov <ast@xxxxxxxxxx>
> Cc: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
> Cc: John Fastabend <john.fastabend@xxxxxxxxx>
> Cc: Andrii Nakryiko <andrii@xxxxxxxxxx>
> Cc: Martin KaFai Lau <martin.lau@xxxxxxxxx>
> Cc: Song Liu <song@xxxxxxxxxx>
> Cc: Yonghong Song <yhs@xxxxxx>
> Cc: KP Singh <kpsingh@xxxxxxxxxx>
> Cc: Stanislav Fomichev <sdf@xxxxxxxxxx>
> Cc: Hao Luo <haoluo@xxxxxxxxxx>
> Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
> Cc: bpf@xxxxxxxxxxxxxxx
> Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
>
> [...]

Here is the summary with links:
- bpf: Always use maximal size for copy_array()
https://git.kernel.org/bpf/bpf/c/45435d8da71f

You are awesome, thank you!
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