Re: [PATCH bpf v4] bpf: Fix theoretical prog_array UAF in __uprobe_perf_func()

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to bpf/bpf.git (master)
by Andrii Nakryiko <andrii@xxxxxxxxxx>:

On Tue, 10 Dec 2024 20:08:14 +0100 you wrote:
> Currently, the pointer stored in call->prog_array is loaded in
> __uprobe_perf_func(), with no RCU annotation and no immediately visible
> RCU protection, so it looks as if the loaded pointer can immediately be
> dangling.
> Later, bpf_prog_run_array_uprobe() starts a RCU-trace read-side critical
> section, but this is too late. It then uses rcu_dereference_check(), but
> this use of rcu_dereference_check() does not actually dereference anything.
> 
> [...]

Here is the summary with links:
  - [bpf,v4] bpf: Fix theoretical prog_array UAF in __uprobe_perf_func()
    https://git.kernel.org/bpf/bpf/c/7d0d673627e2

You are awesome, thank you!
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