From 7d01cb27f6aebc54efbe28d8961a973b8f795b13 Mon Sep 17 00:00:00 2001 From: Zhihao Cheng Date: Wed, 1 Mar 2023 20:29:18 +0800 Subject: Revert "ubifs: dirty_cow_znode: Fix memleak in error handling path" This reverts commit 122deabfe1428 (ubifs: dirty_cow_znode: Fix memleak in error handling path). After commit 122deabfe1428 applied, if insert_old_idx() failed, old index neither exists in TNC nor in old-index tree. Which means that old index node could be overwritten in layout_leb_in_gaps(), then ubifs image will be corrupted in power-cut. Fixes: 122deabfe1428 (ubifs: dirty_cow_znode: Fix memleak ... path) Cc: stable@vger.kernel.org Signed-off-by: Zhihao Cheng Signed-off-by: Richard Weinberger --- fs/ubifs/tnc.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) (limited to 'fs/ubifs/tnc.c') diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c index 2469f72eeaab..2df56bbc6865 100644 --- a/fs/ubifs/tnc.c +++ b/fs/ubifs/tnc.c @@ -267,18 +267,11 @@ static struct ubifs_znode *dirty_cow_znode(struct ubifs_info *c, if (zbr->len) { err = insert_old_idx(c, zbr->lnum, zbr->offs); if (unlikely(err)) - /* - * Obsolete znodes will be freed by tnc_destroy_cnext() - * or free_obsolete_znodes(), copied up znodes should - * be added back to tnc and freed by - * ubifs_destroy_tnc_subtree(). - */ - goto out; + return ERR_PTR(err); err = add_idx_dirt(c, zbr->lnum, zbr->len); } else err = 0; -out: zbr->znode = zn; zbr->lnum = 0; zbr->offs = 0; -- cgit v1.2.3