diff options
| author | Hengqi Chen <hengqi.chen@gmail.com> | 2025-10-02 22:39:53 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2025-10-02 22:39:53 +0800 |
| commit | de2c0b7788648850b68b75f7cc8698b2749dd31e (patch) | |
| tree | 9a6a0822f0e3d5c864b6d8d81186f414da1e7e23 | |
| parent | ea645cfd3d5f74a2bd40a60003f113b3c467975d (diff) | |
LoongArch: BPF: Make error handling robust in arch_prepare_bpf_trampoline()
Bail out instead of trying to perform a bpf_arch_text_copy() if
__arch_prepare_bpf_trampoline() failed.
Cc: stable@vger.kernel.org
Tested-by: Vincent Li <vincent.mc.li@gmail.com>
Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
| -rw-r--r-- | arch/loongarch/net/bpf_jit.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/loongarch/net/bpf_jit.c b/arch/loongarch/net/bpf_jit.c index a941a9f4c337..fa1a3234e9a6 100644 --- a/arch/loongarch/net/bpf_jit.c +++ b/arch/loongarch/net/bpf_jit.c @@ -1715,7 +1715,10 @@ int arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, void *ro_image, jit_fill_hole(image, (unsigned int)(ro_image_end - ro_image)); ret = __arch_prepare_bpf_trampoline(&ctx, im, m, tlinks, func_addr, flags); - if (ret > 0 && validate_code(&ctx) < 0) { + if (ret < 0) + goto out; + + if (validate_code(&ctx) < 0) { ret = -EINVAL; goto out; } |