[PATCH] Fix bug: flat binary loader doesn't check fd table full

[Luke Yang]

Hi all,

   In the binfmt_flat.c, the flat binary loader should check file
descriptor table and install the fd on the file.

diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index 108d56b..6388187 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -493,6 +493,13 @@ static int load_flat_file(struct linux_b
        if (data_len + bss_len > rlim)
                return -ENOMEM;

+       /* check file descriptor */
+       int retval = get_unused_fd();
+       if (retval < 0)
+               return -EMFILE;
+       get_file(bprm->file);
+       fd_install(retval, bprm->file);
+
        /* Flush all traces of the currently running executable */
        if (id == 0) {
                result = flush_old_exec(bprm);

signed-off-by: Luke Yang <luke.adi@xxxxxxxxx>
--
Best regards,
Luke Yang
magic.yyang@xxxxxxxxx; luke.adi@xxxxxxxxx
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