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ubifs: Fix wrong memory allocation 

commit edec51374b upstream.

In create_default_filesystem() when we allocate the idx node we must use
the idx_node_size we calculated just one line before, not tmp, which
contains completely other data.

Fixes: c4de6d7e43 ("ubifs: Refactor create_default_filesystem()")
Cc: stable@vger.kernel.org # v4.20+
Reported-by: Naga Sureshkumar Relli <nagasure@xilinx.com>
Tested-by: Naga Sureshkumar Relli <nagasure@xilinx.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Sascha Hauer 2019-12-04 11:09:58 +01:00 committed by Greg Kroah-Hartman
parent 0119c617eb
commit 91f96a9cdd
1 changed files with 1 additions and 1 deletions
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2
fs/ubifs/sb.c
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@ -161,7 +161,7 @@ static int create_default_filesystem(struct ubifs_info *c)
sup = kzalloc(ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size), GFP_KERNEL);
mst = kzalloc(c->mst_node_alsz, GFP_KERNEL);
idx_node_size = ubifs_idx_node_sz(c, 1);
idx = kzalloc(ALIGN(tmp, c->min_io_size), GFP_KERNEL);
idx = kzalloc(ALIGN(idx_node_size, c->min_io_size), GFP_KERNEL);
ino = kzalloc(ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size), GFP_KERNEL);
cs = kzalloc(ALIGN(UBIFS_CS_NODE_SZ, c->min_io_size), GFP_KERNEL);