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Commit d66bb160 authored by Takashi Iwai's avatar Takashi Iwai Committed by Eric W. Biederman
Browse files

proc: Fix unbalanced hard link numbers 



proc_create_mount_point() forgot to increase the parent's nlink, and
it resulted in unbalanced hard link numbers, e.g. /proc/fs shows one
less than expected.

Fixes: eb6d38d5 ("proc: Allow creating permanently empty directories...")
Cc: stable@vger.kernel.org
Reported-by: default avatarTristan Ye <tristan.ye@suse.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarEric W. Biederman <ebiederm@xmission.com>
parent 6c478ae9

fs/proc/generic.c

+1 −0
Original line number Diff line number Diff line
@@ -472,6 +472,7 @@ struct proc_dir_entry *proc_create_mount_point(const char *name) 
		ent->data = NULL;

		ent->proc_fops = NULL;

		ent->proc_iops = NULL;

		parent->nlink++;

		if (proc_register(parent, ent) < 0) {

			kfree(ent);

			parent->nlink--;