UBIFS: fix oops on error path in read_pnode



Thanks to coverity which spotted that UBIFS will oops if 'kmalloc()'
in 'read_pnode()' fails and we dereference a NULL 'pnode' pointer
when we 'goto out'.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Cc: stable@kernel.org

parent 8b229c76

fs/ubifs/lpt.c

+3 −4

Original line number	Diff line number	Diff line
		@@ -1270,10 +1270,9 @@ static int read_pnode(struct ubifs_info c, struct ubifs_nnode parent, int iip)
		lnum = branch->lnum;
		offs = branch->offs;
		pnode = kzalloc(sizeof(struct ubifs_pnode), GFP_NOFS);
		if (!pnode) {
		err = -ENOMEM;
		goto out;
		}
		if (!pnode)
		return -ENOMEM;

		if (lnum == 0) {
		/*
		* This pnode was not written which just means that the LEB