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Diffstat (limited to 'include/linux/bpf_verifier.h')
-rw-r--r--include/linux/bpf_verifier.h19
1 files changed, 17 insertions, 2 deletions
diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h
index 828d08afeee0..5424124dbe36 100644
--- a/include/linux/bpf_verifier.h
+++ b/include/linux/bpf_verifier.h
@@ -53,7 +53,14 @@ struct bpf_reg_state {
/* valid when type == CONST_PTR_TO_MAP | PTR_TO_MAP_VALUE |
* PTR_TO_MAP_VALUE_OR_NULL
*/
- struct bpf_map *map_ptr;
+ struct {
+ struct bpf_map *map_ptr;
+ /* To distinguish map lookups from outer map
+ * the map_uid is non-zero for registers
+ * pointing to inner maps.
+ */
+ u32 map_uid;
+ };
/* for PTR_TO_BTF_ID */
struct {
@@ -201,12 +208,19 @@ struct bpf_func_state {
* zero == main subprog
*/
u32 subprogno;
+ /* Every bpf_timer_start will increment async_entry_cnt.
+ * It's used to distinguish:
+ * void foo(void) { for(;;); }
+ * void foo(void) { bpf_timer_set_callback(,foo); }
+ */
+ u32 async_entry_cnt;
+ bool in_callback_fn;
+ bool in_async_callback_fn;
/* The following fields should be last. See copy_func_state() */
int acquired_refs;
struct bpf_reference_state *refs;
int allocated_stack;
- bool in_callback_fn;
struct bpf_stack_state *stack;
};
@@ -392,6 +406,7 @@ struct bpf_subprog_info {
bool has_tail_call;
bool tail_call_reachable;
bool has_ld_abs;
+ bool is_async_cb;
};
/* single container for all structs