[PATCH] bpf: replace kvfree with kfree for kzalloc memory

[Qianfeng Rong]

The 'backedge' pointer is allocated with kzalloc(), which returns
physically contiguous memory. Using kvfree() to deallocate such
memory is functionally safe but semantically incorrect.

Replace kvfree() with kfree() to avoid unnecessary is_vmalloc_addr()
check in kvfree().

Signed-off-by: Qianfeng Rong <rongqianfeng@xxxxxxxx>
---
 kernel/bpf/verifier.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index c4f69a9e9af6..4e5de1ff7e30 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -19553,7 +19553,7 @@ static int is_state_visited(struct bpf_verifier_env *env, int insn_idx)
 				err = err ?: add_scc_backedge(env, &sl->state, backedge);
 				if (err) {
 					free_verifier_state(&backedge->state, false);
-					kvfree(backedge);
+					kfree(backedge);
 					return err;
 				}
 			}
-- 
2.34.1