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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:50:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:50:03 +0000
commit01a69402cf9d38ff180345d55c2ee51c7e89fbc7 (patch)
treeb406c5242a088c4f59c6e4b719b783f43aca6ae9 /net/bpf
parentAdding upstream version 6.7.12. (diff)
downloadlinux-upstream/6.8.9.tar.xz
linux-upstream/6.8.9.zip
Adding upstream version 6.8.9.upstream/6.8.9
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'net/bpf')
-rw-r--r--net/bpf/bpf_dummy_struct_ops.c38
-rw-r--r--net/bpf/test_run.c15
2 files changed, 46 insertions, 7 deletions
diff --git a/net/bpf/bpf_dummy_struct_ops.c b/net/bpf/bpf_dummy_struct_ops.c
index 5918d1b32e..8906f7bdf4 100644
--- a/net/bpf/bpf_dummy_struct_ops.c
+++ b/net/bpf/bpf_dummy_struct_ops.c
@@ -12,6 +12,11 @@ extern struct bpf_struct_ops bpf_bpf_dummy_ops;
/* A common type for test_N with return value in bpf_dummy_ops */
typedef int (*dummy_ops_test_ret_fn)(struct bpf_dummy_ops_state *state, ...);
+static int dummy_ops_test_ret_function(struct bpf_dummy_ops_state *state, ...)
+{
+ return 0;
+}
+
struct bpf_dummy_ops_test_args {
u64 args[MAX_BPF_FUNC_ARGS];
struct bpf_dummy_ops_state state;
@@ -62,7 +67,7 @@ static int dummy_ops_copy_args(struct bpf_dummy_ops_test_args *args)
static int dummy_ops_call_op(void *image, struct bpf_dummy_ops_test_args *args)
{
- dummy_ops_test_ret_fn test = (void *)image;
+ dummy_ops_test_ret_fn test = (void *)image + cfi_get_offset();
struct bpf_dummy_ops_state *state = NULL;
/* state needs to be NULL if args[0] is 0 */
@@ -101,12 +106,11 @@ int bpf_struct_ops_test_run(struct bpf_prog *prog, const union bpf_attr *kattr,
goto out;
}
- image = bpf_jit_alloc_exec(PAGE_SIZE);
+ image = arch_alloc_bpf_trampoline(PAGE_SIZE);
if (!image) {
err = -ENOMEM;
goto out;
}
- set_vm_flush_reset_perms(image);
link = kzalloc(sizeof(*link), GFP_USER);
if (!link) {
@@ -120,11 +124,12 @@ int bpf_struct_ops_test_run(struct bpf_prog *prog, const union bpf_attr *kattr,
op_idx = prog->expected_attach_type;
err = bpf_struct_ops_prepare_trampoline(tlinks, link,
&st_ops->func_models[op_idx],
+ &dummy_ops_test_ret_function,
image, image + PAGE_SIZE);
if (err < 0)
goto out;
- set_memory_rox((long)image, 1);
+ arch_protect_bpf_trampoline(image, PAGE_SIZE);
prog_ret = dummy_ops_call_op(image, args);
err = dummy_ops_copy_args(args);
@@ -134,7 +139,7 @@ int bpf_struct_ops_test_run(struct bpf_prog *prog, const union bpf_attr *kattr,
err = -EFAULT;
out:
kfree(args);
- bpf_jit_free_exec(image);
+ arch_free_bpf_trampoline(image, PAGE_SIZE);
if (link)
bpf_link_put(&link->link);
kfree(tlinks);
@@ -220,6 +225,28 @@ static void bpf_dummy_unreg(void *kdata)
{
}
+static int bpf_dummy_test_1(struct bpf_dummy_ops_state *cb)
+{
+ return 0;
+}
+
+static int bpf_dummy_test_2(struct bpf_dummy_ops_state *cb, int a1, unsigned short a2,
+ char a3, unsigned long a4)
+{
+ return 0;
+}
+
+static int bpf_dummy_test_sleepable(struct bpf_dummy_ops_state *cb)
+{
+ return 0;
+}
+
+static struct bpf_dummy_ops __bpf_bpf_dummy_ops = {
+ .test_1 = bpf_dummy_test_1,
+ .test_2 = bpf_dummy_test_2,
+ .test_sleepable = bpf_dummy_test_sleepable,
+};
+
struct bpf_struct_ops bpf_bpf_dummy_ops = {
.verifier_ops = &bpf_dummy_verifier_ops,
.init = bpf_dummy_init,
@@ -228,4 +255,5 @@ struct bpf_struct_ops bpf_bpf_dummy_ops = {
.reg = bpf_dummy_reg,
.unreg = bpf_dummy_unreg,
.name = "bpf_dummy_ops",
+ .cfi_stubs = &__bpf_bpf_dummy_ops,
};
diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c
index 711cf5d598..dfd9193740 100644
--- a/net/bpf/test_run.c
+++ b/net/bpf/test_run.c
@@ -600,10 +600,21 @@ __bpf_kfunc void bpf_kfunc_call_test_release(struct prog_test_ref_kfunc *p)
refcount_dec(&p->cnt);
}
+__bpf_kfunc void bpf_kfunc_call_test_release_dtor(void *p)
+{
+ bpf_kfunc_call_test_release(p);
+}
+CFI_NOSEAL(bpf_kfunc_call_test_release_dtor);
+
__bpf_kfunc void bpf_kfunc_call_memb_release(struct prog_test_member *p)
{
}
+__bpf_kfunc void bpf_kfunc_call_memb_release_dtor(void *p)
+{
+}
+CFI_NOSEAL(bpf_kfunc_call_memb_release_dtor);
+
__bpf_kfunc_end_defs();
BTF_SET8_START(bpf_test_modify_return_ids)
@@ -1671,9 +1682,9 @@ static const struct btf_kfunc_id_set bpf_prog_test_kfunc_set = {
BTF_ID_LIST(bpf_prog_test_dtor_kfunc_ids)
BTF_ID(struct, prog_test_ref_kfunc)
-BTF_ID(func, bpf_kfunc_call_test_release)
+BTF_ID(func, bpf_kfunc_call_test_release_dtor)
BTF_ID(struct, prog_test_member)
-BTF_ID(func, bpf_kfunc_call_memb_release)
+BTF_ID(func, bpf_kfunc_call_memb_release_dtor)
static int __init bpf_prog_test_run_init(void)
{