Nathan Chancellor eb1f3a6ab3 clk: samsung: exynos-clkout: Assign .num before accessing .hws ...

commit cf33f0b7df upstream.

Commit f316cdff8d ("clk: Annotate struct clk_hw_onecell_data with
__counted_by") annotated the hws member of 'struct clk_hw_onecell_data'
with __counted_by, which informs the bounds sanitizer (UBSAN_BOUNDS)
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 initialized with the number of elements before the first
array access happens, otherwise there will be a warning from each access
prior to the initialization because the number of elements is zero. This
occurs in exynos_clkout_probe() due to .num being assigned after .hws[]
has been accessed:

  UBSAN: array-index-out-of-bounds in drivers/clk/samsung/clk-exynos-clkout.c:178:18
  index 0 is out of range for type 'clk_hw *[*]'

Move the .num initialization to before the first access of .hws[],
clearing up the warning.

Cc: stable@vger.kernel.org
Fixes: f316cdff8d ("clk: Annotate struct clk_hw_onecell_data with __counted_by")
Reported-by: Jochen Sprickerhof <jochen@sprickerhof.de>
Closes: https://lore.kernel.org/aSIYDN5eyKFKoXKL@eldamar.lan/
Tested-by: Jochen Sprickerhof <jochen@sprickerhof.de>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2026-01-08 10:14:42 +01:00

..

clk-cpu.c

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clk-cpu.h

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clk-exynos4.c

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clk-exynos5-subcmu.c

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clk-exynos5-subcmu.h

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clk-exynos7.c

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clk-exynos850.c

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clk-exynos3250.c

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clk-exynos4412-isp.c

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clk-exynos5250.c

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clk-exynos5260.c

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clk-exynos5260.h

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clk-exynos5410.c

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clk-exynos5420.c

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clk-exynos5433.c

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clk-exynos7885.c

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clk-exynos-arm64.c

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clk-exynos-arm64.h

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clk-exynos-audss.c

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clk-exynos-clkout.c

clk: samsung: exynos-clkout: Assign .num before accessing .hws

2026-01-08 10:14:42 +01:00

clk-exynosautov9.c

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clk-exynosautov920.c

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clk-fsd.c

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clk-gs101.c

clk: samsung: gs101: fix alternate mout_hsi0_usb20_ref parent clock

2025-08-20 18:30:15 +02:00

clk-pll.c

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clk-pll.h

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clk-s3c64xx.c

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clk-s5pv210-audss.c

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clk-s5pv210.c

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clk.c

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clk.h

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Kconfig

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Makefile

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