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authorTakashi Iwai <tiwai@suse.de>2017-04-28 15:00:15 +0200
committerEric W. Biederman <ebiederm@xmission.com>2017-04-28 21:05:26 -0500
commitd66bb1607e2d8d384e53f3d93db5c18483c8c4f7 (patch)
tree4d063baa6e6130e4c29bb53233d980013ca069ff /fs/proc
parent6c478ae9204b489f6228e4b535c6ac72851e06d8 (diff)
downloadlinux-d66bb1607e2d8d384e53f3d93db5c18483c8c4f7.tar.bz2
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: eb6d38d5427b ("proc: Allow creating permanently empty directories...") Cc: stable@vger.kernel.org Reported-by: Tristan Ye <tristan.ye@suse.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/generic.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index ee27feb34cf4..9425c0d97262 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -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--;