Hello:
This series was applied to bpf/bpf.git (master)
by Alexei Starovoitov <ast@xxxxxxxxxx>:
On Wed, 27 Mar 2024 22:24:25 -0700 you wrote:
> There is no need to delay putting either path or task to deallocation
> step. It can be done right after bpf_uprobe_unregister. Between release
> and dealloc, there could be still some running BPF programs, but they
> don't access either task or path, only data in link->uprobes, so it is
> safe to do.
>
> On the other hand, doing path_put() in dealloc callback makes this
> dealloc sleepable because path_put() itself might sleep. Which is
> problematic due to the need to call uprobe's dealloc through call_rcu(),
> which is what is done in the next bug fix patch. So solve the problem by
> releasing these resources early.
>
> [...]
Here is the summary with links:
- [bpf,1/2] bpf: put uprobe link's path and task in release callback
https://git.kernel.org/bpf/bpf/c/e9c856cabefb
- [bpf,2/2] bpf: support deferring bpf_link dealloc to after RCU grace period
https://git.kernel.org/bpf/bpf/c/1a80dbcb2dba
You are awesome, thank you!
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