[PATCH] fs/coda: add error handling for fget

[Zhouyang Jia]

When fget fails, the lack of error-handling code may
cause unexpected results.

This patch adds error-handling code after calling fget.

Signed-off-by: Zhouyang Jia <jiazhouyan...@gmail.com>
---
 fs/coda/psdev.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c
index c5234c2..55824cb 100644
--- a/fs/coda/psdev.c
+++ b/fs/coda/psdev.c
@@ -187,8 +187,11 @@ static ssize_t coda_psdev_write(struct file *file, const 
char __user *buf,
        if (req->uc_opcode == CODA_OPEN_BY_FD) {
                struct coda_open_by_fd_out *outp =
                        (struct coda_open_by_fd_out *)req->uc_data;
-               if (!outp->oh.result)
+               if (!outp->oh.result) {
                        outp->fh = fget(outp->fd);
+                       if (!outp->fh)
+                               return -EBADF;
+               }
        }
 
         wake_up(&req->uc_sleep);
-- 
2.7.4