On Mon, Feb 2, 2026 at 1:01 AM Chengkaitao <[email protected]> wrote: > > From: Chengkaitao <[email protected]> > > For the following scenario: > struct tree_node { > struct bpf_rb_node node; > struct request __kptr *req; > u64 key; > }; > struct bpf_rb_root tree_root __contains(tree_node, node); > struct bpf_spin_lock tree_lock; > > If we need to traverse all nodes in the rbtree, retrieve the __kptr > pointer from each node, and read kernel data from the referenced > object, using bpf_kptr_xchg appears unavoidable. > > This patch skips the BPF verifier checks for bpf_kptr_xchg when > called while holding a lock. > > Signed-off-by: Chengkaitao <[email protected]>
You ignored earlier feedback. This is not ok. pw-bot: cr
