proc: warn on non-existing proc entries
* warn if creation goes on to non-existent directory
* warn if removal goes on from non-existing directory
* warn if non-existing proc entry is removed
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index ce2d954..08f4d71 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -312,8 +312,10 @@
if (proc_match(len, cp, de))
break;
}
- if (!de)
+ if (!de) {
+ WARN(1, "name '%s'\n", name);
return -ENOENT;
+ }
cp += len + 1;
}
*residual = cp;
@@ -818,8 +820,10 @@
}
}
spin_unlock(&proc_subdir_lock);
- if (!de)
+ if (!de) {
+ WARN(1, "name '%s'\n", name);
return;
+ }
spin_lock(&de->pde_unload_lock);
/*