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bpf, x86: Propagate tailcall info only for subprogs

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In x64 JIT, propagate tailcall info only for subprogs, not for helpers
or kfuncs.

Acked-by: Yonghong Song <yonghong.song@linux.dev>
Signed-off-by: Leon Hwang <leon.hwang@linux.dev>
Link: https://lore.kernel.org/r/20241107134529.8602-2-leon.hwang@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Leon Hwang 2024-11-07 21:45:28 +08:00 committed by Alexei Starovoitov
parent faadc69af1
commit a1087da9d1
1 changed files with 1 additions and 1 deletions
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2
arch/x86/net/bpf_jit_comp.c
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@ -2186,7 +2186,7 @@ populate_extable:
u8 *ip = image + addrs[i - 1]; u8 *ip = image + addrs[i - 1];
func = (u8 *) __bpf_call_base + imm32; 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); LOAD_TAIL_CALL_CNT_PTR(stack_depth);
ip += 7; ip += 7;
} }