From a1087da9d11e5bcacc706002bc0f84b790881f69 Mon Sep 17 00:00:00 2001 From: Leon Hwang Date: Thu, 7 Nov 2024 21:45:28 +0800 Subject: [PATCH] bpf, x86: Propagate tailcall info only for subprogs In x64 JIT, propagate tailcall info only for subprogs, not for helpers or kfuncs. Acked-by: Yonghong Song Signed-off-by: Leon Hwang Link: https://lore.kernel.org/r/20241107134529.8602-2-leon.hwang@linux.dev Signed-off-by: Alexei Starovoitov --- arch/x86/net/bpf_jit_comp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index 8f896c32172c..a43fc5af973d 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -2186,7 +2186,7 @@ populate_extable: u8 *ip = image + addrs[i - 1]; func = (u8 *) __bpf_call_base + imm32; - if (tail_call_reachable) { + if (src_reg == BPF_PSEUDO_CALL && tail_call_reachable) { LOAD_TAIL_CALL_CNT_PTR(stack_depth); ip += 7; } -- 2.50.1