diff options
Diffstat (limited to 'kernel/bpf/syscall.c')
| -rw-r--r-- | kernel/bpf/syscall.c | 20 |
1 files changed, 3 insertions, 17 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 287be337d5f6..4caf06fe4152 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -3874,7 +3874,6 @@ static int bpf_task_fd_query(const union bpf_attr *attr, pid_t pid = attr->task_fd_query.pid; u32 fd = attr->task_fd_query.fd; const struct perf_event *event; - struct files_struct *files; struct task_struct *task; struct file *file; int err; @@ -3892,23 +3891,11 @@ static int bpf_task_fd_query(const union bpf_attr *attr, if (!task) return -ENOENT; - files = get_files_struct(task); - put_task_struct(task); - if (!files) - return -ENOENT; - err = 0; - spin_lock(&files->file_lock); - file = fcheck_files(files, fd); + file = fget_task(task, fd); + put_task_struct(task); if (!file) - err = -EBADF; - else - get_file(file); - spin_unlock(&files->file_lock); - put_files_struct(files); - - if (err) - goto out; + return -EBADF; if (file->f_op == &bpf_link_fops) { struct bpf_link *link = file->private_data; @@ -3948,7 +3935,6 @@ out_not_supp: err = -ENOTSUPP; put_file: fput(file); -out: return err; } |