Messages in this thread | | | From | (Eric W. Biederman) | Date | Fri, 28 Apr 2017 21:06:56 -0500 | Subject | Re: [PATCH] proc: Fix unbalanced hard link numbers |
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Takashi Iwai <tiwai@suse.de> writes:
> 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.
Applied. Thanks.
> > 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> > --- > fs/proc/generic.c | 1 + > 1 file changed, 1 insertion(+) > > 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--;
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