Merging upstream version 6.9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 25 insertions, 10 deletions

diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index c8d1ebc438..5d8f918c98 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -1412,14 +1412,14 @@ __bpf_kfunc int bpf_verify_pkcs7_signature(struct bpf_dynptr_kern *data_ptr,
 
 __bpf_kfunc_end_defs();
 
-BTF_SET8_START(key_sig_kfunc_set)
+BTF_KFUNCS_START(key_sig_kfunc_set)
 BTF_ID_FLAGS(func, bpf_lookup_user_key, KF_ACQUIRE | KF_RET_NULL | KF_SLEEPABLE)
 BTF_ID_FLAGS(func, bpf_lookup_system_key, KF_ACQUIRE | KF_RET_NULL)
 BTF_ID_FLAGS(func, bpf_key_put, KF_RELEASE)
 #ifdef CONFIG_SYSTEM_DATA_VERIFICATION
 BTF_ID_FLAGS(func, bpf_verify_pkcs7_signature, KF_SLEEPABLE)
 #endif
-BTF_SET8_END(key_sig_kfunc_set)
+BTF_KFUNCS_END(key_sig_kfunc_set)
 
 static const struct btf_kfunc_id_set bpf_key_sig_kfunc_set = {
 	.owner = THIS_MODULE,
@@ -1475,9 +1475,9 @@ __bpf_kfunc int bpf_get_file_xattr(struct file *file, const char *name__str,
 
 __bpf_kfunc_end_defs();
 
-BTF_SET8_START(fs_kfunc_set_ids)
+BTF_KFUNCS_START(fs_kfunc_set_ids)
 BTF_ID_FLAGS(func, bpf_get_file_xattr, KF_SLEEPABLE | KF_TRUSTED_ARGS)
-BTF_SET8_END(fs_kfunc_set_ids)
+BTF_KFUNCS_END(fs_kfunc_set_ids)
 
 static int bpf_get_file_xattr_filter(const struct bpf_prog *prog, u32 kfunc_id)
 {
@@ -1629,7 +1629,7 @@ bpf_tracing_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
 	case BPF_FUNC_trace_vprintk:
 		return bpf_get_trace_vprintk_proto();
 	default:
-		return bpf_base_func_proto(func_id);
+		return bpf_base_func_proto(func_id, prog);
 	}
 }
 
@@ -2679,6 +2679,7 @@ static void bpf_kprobe_multi_link_dealloc(struct bpf_link *link)
 static int bpf_kprobe_multi_link_fill_link_info(const struct bpf_link *link,
 						struct bpf_link_info *info)
 {
+	u64 __user *ucookies = u64_to_user_ptr(info->kprobe_multi.cookies);
 	u64 __user *uaddrs = u64_to_user_ptr(info->kprobe_multi.addrs);
 	struct bpf_kprobe_multi_link *kmulti_link;
 	u32 ucount = info->kprobe_multi.count;
@@ -2686,6 +2687,8 @@ static int bpf_kprobe_multi_link_fill_link_info(const struct bpf_link *link,
 
 	if (!uaddrs ^ !ucount)
 		return -EINVAL;
+	if (ucookies && !ucount)
+		return -EINVAL;
 
 	kmulti_link = container_of(link, struct bpf_kprobe_multi_link, link);
 	info->kprobe_multi.count = kmulti_link->cnt;
@@ -2699,6 +2702,18 @@ static int bpf_kprobe_multi_link_fill_link_info(const struct bpf_link *link,
 	else
 		ucount = kmulti_link->cnt;
 
+	if (ucookies) {
+		if (kmulti_link->cookies) {
+			if (copy_to_user(ucookies, kmulti_link->cookies, ucount * sizeof(u64)))
+				return -EFAULT;
+		} else {
+			for (i = 0; i < ucount; i++) {
+				if (put_user(0, ucookies + i))
+					return -EFAULT;
+			}
+		}
+	}
+
 	if (kallsyms_show_value(current_cred())) {
 		if (copy_to_user(uaddrs, kmulti_link->addrs, ucount * sizeof(u64)))
 			return -EFAULT;
@@ -3241,11 +3256,11 @@ static int uprobe_prog_run(struct bpf_uprobe *uprobe,
 		.uprobe = uprobe,
 	};
 	struct bpf_prog *prog = link->link.prog;
-	bool sleepable = prog->aux->sleepable;
+	bool sleepable = prog->sleepable;
 	struct bpf_run_ctx *old_run_ctx;
 	int err = 0;
 
-	if (link->task && current != link->task)
+	if (link->task && current->mm != link->task->mm)
 		return 0;
 
 	if (sleepable)
@@ -3346,8 +3361,9 @@ int bpf_uprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *pr
 	upath = u64_to_user_ptr(attr->link_create.uprobe_multi.path);
 	uoffsets = u64_to_user_ptr(attr->link_create.uprobe_multi.offsets);
 	cnt = attr->link_create.uprobe_multi.cnt;
+	pid = attr->link_create.uprobe_multi.pid;
 
-	if (!upath || !uoffsets || !cnt)
+	if (!upath || !uoffsets || !cnt || pid < 0)
 		return -EINVAL;
 	if (cnt > MAX_UPROBE_MULTI_CNT)
 		return -E2BIG;
@@ -3371,10 +3387,9 @@ int bpf_uprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *pr
 		goto error_path_put;
 	}
 
-	pid = attr->link_create.uprobe_multi.pid;
 	if (pid) {
 		rcu_read_lock();
-		task = get_pid_task(find_vpid(pid), PIDTYPE_PID);
+		task = get_pid_task(find_vpid(pid), PIDTYPE_TGID);
 		rcu_read_unlock();
 		if (!task) {
 			err = -ESRCH;