Re: [PATCH bpf-next v2] bpf: Drop percpu_counter from the htab element count

[patchwork-bot+netdevbpf@kernel.org]

Hello:

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

On Wed, 21 Oct 2026 11:51:16 -0700 you wrote:
> The element count of a large non-preallocated hash map is a
> percpu_counter, whose slow path takes fbc->lock with
> raw_spin_lock_irqsave(). That is not safe against BPF programs that run
> while the lock is held or contended: NMI programs and, as
> queued_spin_lock_slowpath() calls trace_contention_end() with the lock
> already held, programs attached to the contention_end tracepoint. If such
> a program updates the same map it spins on the lock its own CPU holds:
> 
> [...]

Here is the summary with links:
  - [bpf-next,v2] bpf: Drop percpu_counter from the htab element count
    https://git.kernel.org/bpf/bpf/c/1cd28b5354ab

You are awesome, thank you!
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