From: patchwork-bot+netdevbpf@kernel.org
To: Martynas Pumputis <m@lambda.lt>
Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
andrii@kernel.org, joe@wand.net.nz
Subject: Re: [PATCH v2 bpf] libbpf: fix race when pinning maps in parallel
Date: Tue, 27 Jul 2021 21:40:05 +0000 [thread overview]
Message-ID: <162742200509.32671.7545782010122853515.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20210726152001.34845-1-m@lambda.lt>
Hello:
This patch was applied to bpf/bpf-next.git (refs/heads/master):
On Mon, 26 Jul 2021 17:20:01 +0200 you wrote:
> When loading in parallel multiple programs which use the same to-be
> pinned map, it is possible that two instances of the loader will call
> bpf_object__create_maps() at the same time. If the map doesn't exist
> when both instances call bpf_object__reuse_map(), then one of the
> instances will fail with EEXIST when calling bpf_map__pin().
>
> Fix the race by retrying reusing a map if bpf_map__pin() returns
> EEXIST. The fix is similar to the one in iproute2: e4c4685fd6e4 ("bpf:
> Fix race condition with map pinning").
>
> [...]
Here is the summary with links:
- [v2,bpf] libbpf: fix race when pinning maps in parallel
https://git.kernel.org/bpf/bpf-next/c/043c5bb3c4f4
You are awesome, thank you!
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prev parent reply other threads:[~2021-07-27 21:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-26 15:20 [PATCH v2 bpf] libbpf: fix race when pinning maps in parallel Martynas Pumputis
2021-07-27 21:39 ` Andrii Nakryiko
2021-07-27 21:40 ` patchwork-bot+netdevbpf [this message]
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