bpf: Allow bpf_int_jit_compile() to set errno.

There are some failure paths in bpf_int_jit_compile() that are not
worth triggering a warning in __bpf_prog_ret0_warn().

For example, if we fail to allocate memory in bpf_int_jit_compile(),
we should propagate -ENOMEM to userspace instead of attaching
__bpf_prog_ret0_warn().

Let's pass &err to bpf_int_jit_compile() to propagate errno.

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>

Author: q2ven

arch/arc/net/bpf_jit_core.c

@@ -1411,7 +1411,7 @@ 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_prog *prog, int *err)
 {
 	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_prog *prog, int *err)
 {
 	struct bpf_prog *tmp, *orig_prog = prog;
 	struct bpf_binary_header *header;

arch/arm64/net/bpf_jit_comp.c

@@ -1820,7 +1820,7 @@ 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_prog *prog, int *err)
 {
 	int image_size, prog_size, extable_size, extable_align, extable_offset;
 	struct bpf_prog *tmp, *orig_prog = prog;

arch/loongarch/net/bpf_jit.c

@@ -1186,7 +1186,7 @@ static int validate_code(struct jit_ctx *ctx)
 	return 0;
 }
 
-struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
+struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog, int *err)
 {
 	bool tmp_blinded = false, extra_pass = false;
 	u8 *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_prog *prog, int *err)
 {
 	struct bpf_prog *tmp, *orig_prog = prog;
 	struct bpf_binary_header *header = NULL;

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_prog *prog, int *err)
 {
 	unsigned int prog_size = 0, extable_size = 0;
 	bool tmp_blinded = false, extra_pass = false;

arch/powerpc/net/bpf_jit_comp.c

@@ -129,7 +129,7 @@ bool bpf_jit_needs_zext(void)
 	return true;
 }
 
-struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp)
+struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp, int *err)
 {
 	u32 proglen;
 	u32 alloclen;

arch/riscv/net/bpf_jit_core.c

@@ -42,7 +42,7 @@ 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_prog *prog, int *err)
 {
 	unsigned int prog_size = 0, extable_size = 0;
 	bool tmp_blinded = false, extra_pass = false;

arch/s390/net/bpf_jit_comp.c

@@ -2255,7 +2255,7 @@ 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_prog *fp, int *err)
 {
 	u32 stack_depth = round_up(fp->aux->stack_depth, 8);
 	struct bpf_prog *tmp, *orig_fp = fp;

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_prog *prog, int *err)
 {
 	struct bpf_prog *tmp, *orig_prog = prog;
 	struct sparc64_jit_data *jit_data;