[PATCH bpf-next] bpf: preserve sleepable bit in subprog info

[PATCH bpf-next] bpf: preserve sleepable bit in subprog info

[Andrii Nakryiko]

Copy over main program's sleepable bit into subprog's info. This might
be important for, e.g., freplace cases.

Suggested-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
---
 kernel/bpf/verifier.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 63749ad5ac6b..7b208e5d38f6 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -19158,6 +19158,7 @@ static int jit_subprogs(struct bpf_verifier_env *env)
 		if (bpf_prog_calc_tag(func[i]))
 			goto out_free;
 		func[i]->is_func = 1;
+		func[i]->sleepable = prog->sleepable;
 		func[i]->aux->func_idx = i;
 		/* Below members will be freed only at prog->aux */
 		func[i]->aux->btf = prog->aux->btf;
-- 
2.43.0

Re: [PATCH bpf-next] bpf: preserve sleepable bit in subprog info

[Stanislav Fomichev]

On 03/13, Andrii Nakryiko wrote:
> Copy over main program's sleepable bit into subprog's info. This might
> be important for, e.g., freplace cases.
> 
> Suggested-by: Alexei Starovoitov <ast@kernel.org>
> Signed-off-by: Andrii Nakryiko <andrii@kernel.org>

Acked-by: Stanislav Fomichev <sdf@google.com>

Re: [PATCH bpf-next] bpf: preserve sleepable bit in subprog info

[patchwork-bot+netdevbpf]

Hello:

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

On Wed, 13 Mar 2024 17:01:27 -0700 you wrote:
> Copy over main program's sleepable bit into subprog's info. This might
> be important for, e.g., freplace cases.
> 
> Suggested-by: Alexei Starovoitov <ast@kernel.org>
> Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
> ---
>  kernel/bpf/verifier.c | 1 +
>  1 file changed, 1 insertion(+)

Here is the summary with links:
  - [bpf-next] bpf: preserve sleepable bit in subprog info
    https://git.kernel.org/bpf/bpf-next/c/4d8926a0407c

You are awesome, thank you!
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