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[PATCH] autofs4: avoid panic on bind mount of autofs owned directory

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While this is not a solution to bind and move mounts on autofs owned
directories it is necessary to fix the trady error handling.

At least it avoids the kernel panic I observed checking out bug #4589.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ian Kent
2005-06-21 17:16:38 -07:00
committed by Linus Torvalds
parent 8818760512
commit 9b1e3afd6d
3 changed files with 19 additions and 5 deletions
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6
fs/autofs4/root.c
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@@ -205,7 +205,11 @@ static int autofs4_dir_open(struct inode *inode, struct file *file)
struct vfsmount *fp_mnt = mntget(mnt);
struct dentry *fp_dentry = dget(dentry);
while (follow_down(&fp_mnt, &fp_dentry) && d_mountpoint(fp_dentry));
if (!autofs4_follow_mount(&fp_mnt, &fp_dentry)) {
dput(fp_dentry);
mntput(fp_mnt);
return -ENOENT;
}
fp = dentry_open(fp_dentry, fp_mnt, file->f_flags);
status = PTR_ERR(fp);