Re: [PATCH bpf-next 2/2] bpf: Expose bpf_d_path helper to sleepable LSM hooks

From: Yonghong Song
Date: Thu Nov 12 2020 - 22:18:50 EST




On 11/12/20 9:19 AM, KP Singh wrote:
From: KP Singh <kpsingh@xxxxxxxxxx>

Sleepable hooks are never called from an NMI/interrupt context, so it is
safe to use the bpf_d_path helper in LSM programs attaching to these
hooks.

The helper is not restricted to sleepable programs and merely uses the
list of sleeable hooks as the initial subset of LSM hooks where it can

sleeable => sleepable

probably not need to resend if no other major changes. The maintainer
can just fix it up before merging.

be used.

Signed-off-by: KP Singh <kpsingh@xxxxxxxxxx>

Acked-by: Yonghong Song <yhs@xxxxxx>