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GFS2: Fix reference to ERR_PTR in gfs2_glock_iter_next

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[ Upstream commit 14d37564fa3dc4e5d4c6828afcd26ac14e6796c5 ]

This patch fixes a place where function gfs2_glock_iter_next can
reference an invalid error pointer.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter 2016-12-14 08:02:03 -06:00 • committed by Greg Kroah-Hartman
parent 11bf4a8e1d
commit d4f97441cb
1 changed files with 7 additions and 5 deletions
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12
fs/gfs2/glock.c
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@ -1798,16 +1798,18 @@ void gfs2_glock_exit(void)
static void gfs2_glock_iter_next(struct gfs2_glock_iter *gi)
{
do {
gi->gl = rhashtable_walk_next(&gi->hti);
while ((gi->gl = rhashtable_walk_next(&gi->hti))) {
if (IS_ERR(gi->gl)) {
if (PTR_ERR(gi->gl) == -EAGAIN)
continue;
gi->gl = NULL;
return;
}
/* Skip entries for other sb and dead entries */
} while ((gi->gl) && ((gi->sdp != gi->gl->gl_name.ln_sbd) ||
__lockref_is_dead(&gi->gl->gl_lockref)));
/* Skip entries for other sb and dead entries */
if (gi->sdp == gi->gl->gl_name.ln_sbd &&
!__lockref_is_dead(&gi->gl->gl_lockref))
return;
}
}
static void *gfs2_glock_seq_start(struct seq_file *seq, loff_t *pos)