Re: [PATCH v3] bpf: Annotate bpf_obj_memcpy with data_race

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Kumar Kartikeya Dwivedi <[email protected]>:

On Sat, 22 Aug 2026 14:55:33 +0800 you wrote:
> From: Quanye Yang <[email protected]>
> 
> syzbot reported KCSAN write-write races when two tasks concurrently
> update the same map value. Both accesses reach the ordinary memcpy()
> paths in bpf_obj_memcpy() through copy_map_value().
> 
> Unlocked in-place updates of published map values are intentionally not
> serialized and may produce torn values. Callers requiring consistency
> must provide synchronization appropriate for the map type.
> bpf_long_memcpy() already annotates the same behavior for long-aligned
> copies.
> 
> [...]

Here is the summary with links:
  - [v3] bpf: Annotate bpf_obj_memcpy with data_race
    https://git.kernel.org/bpf/bpf-next/c/5e289c5a4a52

You are awesome, thank you!
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