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-rw-r--r--kernel/bpf/cpumap.c2
-rw-r--r--kernel/bpf/devmap.c1
-rw-r--r--kernel/bpf/verifier.c21
-rw-r--r--kernel/bpf/xskmap.c1
4 files changed, 4 insertions, 21 deletions
diff --git a/kernel/bpf/cpumap.c b/kernel/bpf/cpumap.c
index 620bc5024d7d..24aac0d0f412 100644
--- a/kernel/bpf/cpumap.c
+++ b/kernel/bpf/cpumap.c
@@ -479,6 +479,8 @@ static void cpu_map_free(struct bpf_map *map)
* It does __not__ ensure pending flush operations (if any) are
* complete.
*/
+
+ bpf_clear_redirect_map(map);
synchronize_rcu();
/* To ensure all pending flush operations have completed wait for flush
diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
index ac1df79f3788..141710b82a6c 100644
--- a/kernel/bpf/devmap.c
+++ b/kernel/bpf/devmap.c
@@ -161,6 +161,7 @@ static void dev_map_free(struct bpf_map *map)
list_del_rcu(&dtab->list);
spin_unlock(&dev_map_lock);
+ bpf_clear_redirect_map(map);
synchronize_rcu();
/* To ensure all pending flush operations have completed wait for flush
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index ca90679a7fe5..92246117d2b0 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -5844,27 +5844,6 @@ static int fixup_bpf_calls(struct bpf_verifier_env *env)
goto patch_call_imm;
}
- if (insn->imm == BPF_FUNC_redirect_map) {
- /* Note, we cannot use prog directly as imm as subsequent
- * rewrites would still change the prog pointer. The only
- * stable address we can use is aux, which also works with
- * prog clones during blinding.
- */
- u64 addr = (unsigned long)prog->aux;
- struct bpf_insn r4_ld[] = {
- BPF_LD_IMM64(BPF_REG_4, addr),
- *insn,
- };
- cnt = ARRAY_SIZE(r4_ld);
-
- new_prog = bpf_patch_insn_data(env, i + delta, r4_ld, cnt);
- if (!new_prog)
- return -ENOMEM;
-
- delta += cnt - 1;
- env->prog = prog = new_prog;
- insn = new_prog->insnsi + i + delta;
- }
patch_call_imm:
fn = env->ops->get_func_proto(insn->imm, env->prog);
/* all functions that have prototype and verifier allowed
diff --git a/kernel/bpf/xskmap.c b/kernel/bpf/xskmap.c
index 4ddf61e158f6..9f8463afda9c 100644
--- a/kernel/bpf/xskmap.c
+++ b/kernel/bpf/xskmap.c
@@ -75,6 +75,7 @@ static void xsk_map_free(struct bpf_map *map)
struct xsk_map *m = container_of(map, struct xsk_map, map);
int i;
+ bpf_clear_redirect_map(map);
synchronize_net();
for (i = 0; i < map->max_entries; i++) {