1 files changed, 8 insertions, 0 deletions

diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 7af0dcc5d755..821f9e807de5 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -617,6 +617,14 @@ static void fixup_bpf_calls(struct bpf_prog *prog)
                         if (insn->imm == BPF_FUNC_xdp_adjust_head)
                                 prog->xdp_adjust_head = 1;
                         if (insn->imm == BPF_FUNC_tail_call) {
+                                /* If we tail call into other programs, we
+                                 * cannot make any assumptions since they
+                                 * can be replaced dynamically during runtime
+                                 * in the program array.
+                                 */
+                                prog->cb_access = 1;
+                                prog->xdp_adjust_head = 1;
+
                                 /* mark bpf_tail_call as different opcode
                                  * to avoid conditional branch in
                                  * interpeter for every normal call