Re: [PATCH bpf-next 0/9] bpf: Avoid unnecessary deadlock detection and failure in task storage

patchwork-bot+netdevbpf
2022-10-26T06:20:23Z

Hello:

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

On Tue, 25 Oct 2022 11:45:15 -0700 you wrote:
> From: Martin KaFai Lau <martin.lau@kernel.org>
>
> The commit bc235cdb423a ("bpf: Prevent deadlock from recursive bpf_task_storage_[get|delete]")
> added deadlock detection to avoid a tracing program from recurring
> on the bpf_task_storage_{get,delete}() helpers. These helpers acquire
> a spin lock and it will lead to deadlock.
>
> [...]

Here is the summary with links:
- [bpf-next,1/9] bpf: Remove prog->active check for bpf_lsm and bpf_iter
https://git.kernel.org/bpf/bpf-next/c/271de525e1d7
- [bpf-next,2/9] bpf: Append _recur naming to the bpf_task_storage helper proto
https://git.kernel.org/bpf/bpf-next/c/0593dd34e534
- [bpf-next,3/9] bpf: Refactor the core bpf_task_storage_get logic into a new function
https://git.kernel.org/bpf/bpf-next/c/6d65500c34d8
- [bpf-next,4/9] bpf: Avoid taking spinlock in bpf_task_storage_get if potential deadlock is detected
https://git.kernel.org/bpf/bpf-next/c/e8b02296a6b8
- [bpf-next,5/9] bpf: Add new bpf_task_storage_get proto with no deadlock detection
https://git.kernel.org/bpf/bpf-next/c/4279adb094a1
- [bpf-next,6/9] bpf: bpf_task_storage_delete_recur does lookup first before the deadlock check
https://git.kernel.org/bpf/bpf-next/c/fda64ae0bb3e
- [bpf-next,7/9] bpf: Add new bpf_task_storage_delete proto with no deadlock detection
https://git.kernel.org/bpf/bpf-next/c/8a7dac37f27a
- [bpf-next,8/9] selftests/bpf: Ensure no task storage failure for bpf_lsm.s prog due to deadlock detection
https://git.kernel.org/bpf/bpf-next/c/0334b4d8822a
- [bpf-next,9/9] selftests/bpf: Tracing prog can still do lookup under busy lock
https://git.kernel.org/bpf/bpf-next/c/387b532138ee

You are awesome, thank you!
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