1 files changed, 16 insertions, 4 deletions

diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
index d8315e61731e..e7204d71acc9 100644
--- a/fs/autofs/inode.c
+++ b/fs/autofs/inode.c
@@ -37,6 +37,8 @@ void autofs_kill_sb(struct super_block *sb)
         if (!sbi->catatonic)
                 autofs_catatonic_mode(sbi); /* Free wait queues, close pipe */
 
+        put_pid(sbi->oz_pgrp);
+
         autofs_hash_nuke(sbi);
         for (n = 0; n < AUTOFS_MAX_SYMLINKS; n++) {
                 if (test_bit(n, sbi->symlink_bitmap))
@@ -139,6 +141,7 @@ int autofs_fill_super(struct super_block *s, void *data, int silent)
         int pipefd;
         struct autofs_sb_info *sbi;
         int minproto, maxproto;
+        pid_t pgid;
 
         sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
         if (!sbi)
@@ -150,7 +153,6 @@ int autofs_fill_super(struct super_block *s, void *data, int silent)
         sbi->pipe = NULL;
         sbi->catatonic = 1;
         sbi->exp_timeout = 0;
-        sbi->oz_pgrp = process_group(current);
         autofs_initialize_hash(&sbi->dirhash);
         sbi->queues = NULL;
         memset(sbi->symlink_bitmap, 0, sizeof(long)*AUTOFS_SYMLINK_BITMAP_LEN);
@@ -171,7 +173,7 @@ int autofs_fill_super(struct super_block *s, void *data, int silent)
 
         /* Can this call block?  - WTF cares? s is locked. */
         if (parse_options(data, &pipefd, &root_inode->i_uid,
-                                &root_inode->i_gid, &sbi->oz_pgrp, &minproto,
+                                &root_inode->i_gid, &pgid, &minproto,
                                 &maxproto)) {
                 printk("autofs: called with bogus options\n");
                 goto fail_dput;
@@ -184,13 +186,21 @@ int autofs_fill_super(struct super_block *s, void *data, int silent)
                 goto fail_dput;
         }
 
-        DPRINTK(("autofs: pipe fd = %d, pgrp = %u\n", pipefd, sbi->oz_pgrp));
+        DPRINTK(("autofs: pipe fd = %d, pgrp = %u\n", pipefd, pgid));
+        sbi->oz_pgrp = find_get_pid(pgid);
+
+        if (!sbi->oz_pgrp) {
+                printk("autofs: could not find process group %d\n", pgid);
+                goto fail_dput;
+        }
+
         pipe = fget(pipefd);
         
         if (!pipe) {
                 printk("autofs: could not open pipe file descriptor\n");
-                goto fail_dput;
+                goto fail_put_pid;
         }
+
         if (!pipe->f_op || !pipe->f_op->write)
                 goto fail_fput;
         sbi->pipe = pipe;
@@ -205,6 +215,8 @@ int autofs_fill_super(struct super_block *s, void *data, int silent)
 fail_fput:
         printk("autofs: pipe file descriptor does not contain proper ops\n");
         fput(pipe);
+fail_put_pid:
+        put_pid(sbi->oz_pgrp);
 fail_dput:
         dput(root);
         goto fail_free;