The GTP PDP lookup helpers are shared by RCU-protected data and report
paths and RTNL-protected control paths such as gtp_genl_new_pdp(). The
helpers walk RCU hlists, but they do not currently pass the RTNL
condition for the control-path lookups.
Pass lockdep_rtnl_is_held() to the PDP hlist iterators. Existing
RCU-reader callers remain valid because the RCU-list macros also accept
an active RCU read-side section; the added condition only documents the
non-RCU protection already used by RTNL control paths.
This was found by our static analysis tool and then manually reviewed
against the current tree. The dynamic triage evidence is a
target-matched CONFIG_PROVE_RCU_LIST warning; the change is limited
to documenting the existing protection contract.
This is a lockdep annotation cleanup. It does not change PDP lifetime or
hash updates.
Signed-off-by: Runyu Xiao <runyu.xiao@seu.edu.cn>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260701123925.3193089-1-runyu.xiao@seu.edu.cn
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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