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authorAlexey Dobriyan <adobriyan@gmail.com>2008-10-03 00:18:52 +0400
committerAlexey Dobriyan <adobriyan@gmail.com>2008-10-10 04:18:54 +0400
commit300b994b74e75120dd1a48529552a44977e0a82a (patch)
tree5a8cb645c5a10182bbd0bb456285d362bcdd6f51
parent3fa8749e584b55f1180411ab1b51117190bac1e5 (diff)
proc: fix return value of proc_reg_open() in "too late" case
If ->open() wasn't called, returning 0 is misleading and, theoretically, oopsable: 1) remove_proc_entry clears ->proc_fops, drops lock, 2) ->open "succeeds", 3) ->release oopses, because it assumes ->open was called (single_release()). Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
-rw-r--r--fs/proc/inode.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 8bb03f056c2..c6b4fa7e3b4 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -342,7 +342,7 @@ static int proc_reg_open(struct inode *inode, struct file *file)
if (!pde->proc_fops) {
spin_unlock(&pde->pde_unload_lock);
kfree(pdeo);
- return rv;
+ return -EINVAL;
}
pde->pde_users++;
open = pde->proc_fops->open;