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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2018-12-03 17:50:55 +0300 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2018-12-03 09:54:48 -0800 |
| commit | d9f5b7f5dd0fa74a89de5a7ac1e26366f211ccee (patch) | |
| tree | 330ad61d8ab70cba2b2769d41e58823258157b32 | |
| parent | d206e6b7ea3fdc8ec8f6be9a2ecfe58142b49e37 (diff) | |
| download | blackbird-obmc-linux-d9f5b7f5dd0fa74a89de5a7ac1e26366f211ccee.tar.gz blackbird-obmc-linux-d9f5b7f5dd0fa74a89de5a7ac1e26366f211ccee.zip | |
clk: mvebu: Off by one bugs in cp110_of_clk_get()
These > comparisons should be >= to prevent reading beyond the end of
of the clk_data->hws[] buffer.
The clk_data->hws[] array is allocated in cp110_syscon_common_probe()
when we do:
cp110_clk_data = devm_kzalloc(dev, sizeof(*cp110_clk_data) +
sizeof(struct clk_hw *) * CP110_CLK_NUM,
GFP_KERNEL);
As you can see, it has CP110_CLK_NUM elements which is equivalent to
CP110_MAX_CORE_CLOCKS + CP110_MAX_GATABLE_CLOCKS.
Fixes: d3da3eaef7f4 ("clk: mvebu: new driver for Armada CP110 system controller")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
| -rw-r--r-- | drivers/clk/mvebu/cp110-system-controller.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/clk/mvebu/cp110-system-controller.c b/drivers/clk/mvebu/cp110-system-controller.c index 9781b1bf5998..9235a331b588 100644 --- a/drivers/clk/mvebu/cp110-system-controller.c +++ b/drivers/clk/mvebu/cp110-system-controller.c @@ -200,11 +200,11 @@ static struct clk_hw *cp110_of_clk_get(struct of_phandle_args *clkspec, unsigned int idx = clkspec->args[1]; if (type == CP110_CLK_TYPE_CORE) { - if (idx > CP110_MAX_CORE_CLOCKS) + if (idx >= CP110_MAX_CORE_CLOCKS) return ERR_PTR(-EINVAL); return clk_data->hws[idx]; } else if (type == CP110_CLK_TYPE_GATABLE) { - if (idx > CP110_MAX_GATABLE_CLOCKS) + if (idx >= CP110_MAX_GATABLE_CLOCKS) return ERR_PTR(-EINVAL); return clk_data->hws[CP110_MAX_CORE_CLOCKS + idx]; } |
