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authorAndrĂ© Draszik <[email protected]>2025-03-26 12:08:00 +0000
committerStephen Boyd <[email protected]>2025-05-08 21:01:44 +0000
commit3e14c7207a975eefcda1929b2134a9f4119dde45 (patch)
tree45d0fc9d9a22bd34b9b76c51b44e1fcbd3e2832b /tools/testing/selftests/net/lib/py/netns.py
parentMerge tag 'v6.15-rockchip-clkfixes1' of git://git.kernel.org/pub/scm/linux/ke... (diff)
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clk: s2mps11: initialise clk_hw_onecell_data::num before accessing ::hws[] in probe()
With UBSAN enabled, we're getting the following trace: UBSAN: array-index-out-of-bounds in .../drivers/clk/clk-s2mps11.c:186:3 index 0 is out of range for type 'struct clk_hw *[] __counted_by(num)' (aka 'struct clk_hw *[]') This is because commit f316cdff8d67 ("clk: Annotate struct clk_hw_onecell_data with __counted_by") annotated the hws member of that struct with __counted_by, which informs the bounds sanitizer about the number of elements in hws, so that it can warn when hws is accessed out of bounds. As noted in that change, the __counted_by member must be initialised with the number of elements before the first array access happens, otherwise there will be a warning from each access prior to the initialisation because the number of elements is zero. This occurs in s2mps11_clk_probe() due to ::num being assigned after ::hws access. Move the assignment to satisfy the requirement of assign-before-access. Cc: [email protected] Fixes: f316cdff8d67 ("clk: Annotate struct clk_hw_onecell_data with __counted_by") Signed-off-by: AndrĂ© Draszik <[email protected]> Link: https://lore.kernel.org/r/[email protected] Reviewed-by: Krzysztof Kozlowski <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
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