This is a note to let you know that I've just added the patch titled clk: sunxi-ng: Check kzalloc() for errors and cleanup error path to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: clk-sunxi-ng-check-kzalloc-for-errors-and-cleanup-error-path.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Mon Nov 6 10:07:35 CET 2017 From: Stephen Boyd <sboyd@xxxxxxxxxxxxxx> Date: Sat, 7 Oct 2017 22:36:52 +0000 Subject: clk: sunxi-ng: Check kzalloc() for errors and cleanup error path From: Stephen Boyd <sboyd@xxxxxxxxxxxxxx> [ Upstream commit 5d806f9fc8e63d7a44e0fd1ef26a7c27efae0e51 ] This kzalloc() could fail. Let's bail out with -ENOMEM here instead of NULL dereferencing. That silences static checkers. We should also cleanup on the error path even though this function returning an error probably means the system won't boot. Cc: Chen-Yu Tsai <wens@xxxxxxxx> Acked-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx> Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/clk/sunxi-ng/ccu_common.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) --- a/drivers/clk/sunxi-ng/ccu_common.c +++ b/drivers/clk/sunxi-ng/ccu_common.c @@ -70,6 +70,11 @@ int sunxi_ccu_probe(struct device_node * goto err_clk_unreg; reset = kzalloc(sizeof(*reset), GFP_KERNEL); + if (!reset) { + ret = -ENOMEM; + goto err_alloc_reset; + } + reset->rcdev.of_node = node; reset->rcdev.ops = &ccu_reset_ops; reset->rcdev.owner = THIS_MODULE; @@ -85,6 +90,16 @@ int sunxi_ccu_probe(struct device_node * return 0; err_of_clk_unreg: + kfree(reset); +err_alloc_reset: + of_clk_del_provider(node); err_clk_unreg: + while (--i >= 0) { + struct clk_hw *hw = desc->hw_clks->hws[i]; + + if (!hw) + continue; + clk_hw_unregister(hw); + } return ret; } Patches currently in stable-queue which might be from sboyd@xxxxxxxxxxxxxx are queue-4.9/clk-sunxi-ng-check-kzalloc-for-errors-and-cleanup-error-path.patch