Subject: [PATCH v2 6/9] riscv: bpf: Write protect JIT code

From: Jisheng Zhang <[email-masked]>
Date: Thu, 1 Apr 2021 00:27:58 +0800

From: Jisheng Zhang <[email-masked]>

Call bpf_jit_binary_lock_ro() to write protect JIT code.

Signed-off-by: Jisheng Zhang <[email-masked]>
---
 arch/riscv/net/bpf_jit_core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/net/bpf_jit_core.c b/arch/riscv/net/bpf_jit_core.c
index 3630d447352c..40d5bf113fee 100644
--- a/arch/riscv/net/bpf_jit_core.c
+++ b/arch/riscv/net/bpf_jit_core.c
@@ -152,6 +152,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
 	bpf_flush_icache(jit_data->header, ctx->insns + ctx->ninsns);
 
 	if (!prog->is_func || extra_pass) {
+		bpf_jit_binary_lock_ro(jit_data->header);
 out_offset:
 		kfree(ctx->offset);
 		kfree(jit_data);
-- 
2.31.0