linux/drivers/reset
Geert Uytterhoeven 58f3fc8333 reset: Fix crash when freeing non-existent optional resets
[ Upstream commit 4a6756f56b ]

When obtaining one or more optional resets, non-existent resets are
stored as NULL pointers, and all related error and cleanup paths need to
take this into account.

Currently only reset_control_put() and reset_control_bulk_put()
get this right.  All of __reset_control_bulk_get(),
of_reset_control_array_get(), and reset_control_array_put() lack the
proper checking, causing NULL pointer dereferences on failure or
release.

Fix this by moving the existing check from reset_control_bulk_put() to
__reset_control_put_internal(), so it applies to all callers.
The double check in reset_control_put() doesn't hurt.

Fixes: 17c82e206d ("reset: Add APIs to manage array of resets")
Fixes: 48d7139589 ("reset: Add reset_control_bulk API")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/2440edae7ca8534628cdbaf559ded288f2998178.1701276806.git.geert+renesas@glider.be
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-01-05 15:13:27 +01:00
..
hisilicon
sti
tegra
core.c reset: Fix crash when freeing non-existent optional resets 2024-01-05 15:13:27 +01:00
Kconfig
Makefile
reset-a10sr.c
reset-ath79.c
reset-axs10x.c
reset-bcm6345.c
reset-berlin.c
reset-brcmstb-rescal.c
reset-brcmstb.c
reset-hsdk.c
reset-imx7.c
reset-intel-gw.c
reset-k210.c
reset-lantiq.c
reset-lpc18xx.c
reset-meson-audio-arb.c
reset-meson.c
reset-microchip-sparx5.c
reset-npcm.c
reset-oxnas.c
reset-pistachio.c
reset-qcom-aoss.c
reset-qcom-pdc.c
reset-raspberrypi.c
reset-rzg2l-usbphy-ctrl.c
reset-scmi.c
reset-simple.c
reset-socfpga.c
reset-sunxi.c
reset-ti-sci.c
reset-ti-syscon.c
reset-uniphier-glue.c reset: uniphier-glue: Fix possible null-ptr-deref 2023-02-01 08:27:04 +01:00
reset-uniphier.c
reset-zynq.c
reset-zynqmp.c