bpf: Pass bpf_verifier_env to JIT

Pass bpf_verifier_env to bpf_int_jit_compile(). The follow-up patch will
use env->insn_aux_data in the JIT stage to detect indirect jump targets.

Since bpf_prog_select_runtime() can be called by cbpf and lib/test_bpf.c
code without verifier, introduce helper __bpf_prog_select_runtime()
to accept the env parameter.

Remove the call to bpf_prog_select_runtime() in bpf_prog_load(), and
switch to call __bpf_prog_select_runtime() in the verifier, with env
variable passed. The original bpf_prog_select_runtime() is preserved for
cbpf and lib/test_bpf.c, where env is NULL.

Now all constants blinding calls are moved into the verifier, except
the cbpf and lib/test_bpf.c cases. The instructions arrays are adjusted
by bpf_patch_insn_data() function for normal cases, so there is no need
to call adjust_insn_arrays() in bpf_jit_blind_constants(). Remove it.

Reviewed-by: Anton Protopopov <a.s.protopopov@gmail.com> # v8
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> # v12
Acked-by: Hengqi Chen <hengqi.chen@gmail.com> # v14
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Link: https://lore.kernel.org/r/20260416064341.151802-3-xukuohai@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

Author: Xu Kuohai

arch/arc/net/bpf_jit_core.c

@@ -1400,7 +1400,7 @@ static struct bpf_prog *do_extra_pass(struct bpf_prog *prog)
  * (re)locations involved that their addresses are not known
  * during the first run.
  */
-struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
+struct bpf_prog *bpf_int_jit_compile(struct bpf_verifier_env *env, struct bpf_prog *prog)
 {
 	vm_dump(prog);
 

arch/arm/net/bpf_jit_32.c

@@ -2142,7 +2142,7 @@ bool bpf_jit_needs_zext(void)
 	return true;
 }
 
-struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
+struct bpf_prog *bpf_int_jit_compile(struct bpf_verifier_env *env, struct bpf_prog *prog)
 {
 	struct bpf_binary_header *header;
 	struct jit_ctx ctx;

arch/arm64/net/bpf_jit_comp.c

@@ -2000,7 +2000,7 @@ struct arm64_jit_data {
 	struct jit_ctx ctx;
 };
 
-struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
+struct bpf_prog *bpf_int_jit_compile(struct bpf_verifier_env *env, struct bpf_prog *prog)
 {
 	int image_size, prog_size, extable_size, extable_align, extable_offset;
 	struct bpf_binary_header *header;

arch/loongarch/net/bpf_jit.c

@@ -1920,7 +1920,7 @@ int arch_bpf_trampoline_size(const struct btf_func_model *m, u32 flags,
 	return ret < 0 ? ret : ret * LOONGARCH_INSN_SIZE;
 }
 
-struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
+struct bpf_prog *bpf_int_jit_compile(struct bpf_verifier_env *env, struct bpf_prog *prog)
 {
 	bool extra_pass = false;
 	u8 *image_ptr, *ro_image_ptr;

arch/mips/net/bpf_jit_comp.c

@@ -909,7 +909,7 @@ bool bpf_jit_needs_zext(void)
 	return true;
 }
 
-struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
+struct bpf_prog *bpf_int_jit_compile(struct bpf_verifier_env *env, struct bpf_prog *prog)
 {
 	struct bpf_binary_header *header = NULL;
 	struct jit_context ctx;

arch/parisc/net/bpf_jit_core.c

@@ -41,7 +41,7 @@ bool bpf_jit_needs_zext(void)
 	return true;
 }
 
-struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
+struct bpf_prog *bpf_int_jit_compile(struct bpf_verifier_env *env, struct bpf_prog *prog)
 {
 	unsigned int prog_size = 0, extable_size = 0;
 	bool extra_pass = false;

arch/powerpc/net/bpf_jit_comp.c

@@ -162,7 +162,7 @@ static void priv_stack_check_guard(void __percpu *priv_stack_ptr, int alloc_size
 	}
 }
 
-struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp)
+struct bpf_prog *bpf_int_jit_compile(struct bpf_verifier_env *env, struct bpf_prog *fp)
 {
 	u32 proglen;
 	u32 alloclen;

arch/riscv/net/bpf_jit_core.c

@@ -41,7 +41,7 @@ bool bpf_jit_needs_zext(void)
 	return true;
 }
 
-struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
+struct bpf_prog *bpf_int_jit_compile(struct bpf_verifier_env *env, struct bpf_prog *prog)
 {
 	unsigned int prog_size = 0, extable_size = 0;
 	bool extra_pass = false;

arch/s390/net/bpf_jit_comp.c

@@ -2312,7 +2312,7 @@ static struct bpf_binary_header *bpf_jit_alloc(struct bpf_jit *jit,
 /*
  * Compile eBPF program "fp"
  */
-struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp)
+struct bpf_prog *bpf_int_jit_compile(struct bpf_verifier_env *env, struct bpf_prog *fp)
 {
 	struct bpf_binary_header *header;
 	struct s390_jit_data *jit_data;

arch/sparc/net/bpf_jit_comp_64.c

@@ -1477,7 +1477,7 @@ struct sparc64_jit_data {
 	struct jit_ctx ctx;
 };
 
-struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
+struct bpf_prog *bpf_int_jit_compile(struct bpf_verifier_env *env, struct bpf_prog *prog)
 {
 	struct sparc64_jit_data *jit_data;
 	struct bpf_binary_header *header;