Martin Blumenstingl 24876f09a7 clk: Fix potential NULL dereference in clk_fetch_parent_index() ... Don't compare the parent clock name with a NULL name in the clk_parent_map. This prevents a kernel crash when passing NULL core->parents[i].name to strcmp(). An example which triggered this is a mux clock with four parents when each of them is referenced in the clock driver using clk_parent_data.fw_name and then calling clk_set_parent(clk, 3rd_parent) on this mux. In this case the first parent is also the HW default so core->parents[i].hw is populated when the clock is registered. Calling clk_set_parent(clk, 3rd_parent) will then go through all parents and skip the first parent because it's hw pointer doesn't match. For the second parent no hw pointer is cached yet and clk_core_get(core, 1) returns a non-matching pointer (which is correct because we are comparing the second with the third parent). Comparing the result of clk_core_get(core, 2) with the requested parent gives a match. However we don't reach this point because right after the clk_core_get(core, 1) mismatch the old code tried to !strcmp(parent->name, NULL) (where the second argument is actually core->parents[i].name, but that was never populated by the clock driver). Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Link: https://lkml.kernel.org/r/20190815223155.21384-1-martin.blumenstingl@googlemail.com Fixes: fc0c209c14 ("clk: Allow parents to be specified without string names") Signed-off-by: Stephen Boyd <sboyd@kernel.org>		2019-08-16 10:30:21 -07:00
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actions
analogbits
at91	clk: at91: generated: Truncate divisor to GENERATED_MAX_DIV + 1	2019-07-22 14:32:08 -07:00
axis	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
axs10x
bcm	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
berlin
davinci
h8300
hisilicon	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
imgtec
imx	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
ingenic	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
keystone	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
loongson1
mediatek	clk: mediatek: mt8183: Register 13MHz clock earlier for clocksource	2019-07-22 14:32:52 -07:00
meson	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
microchip	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 445	2019-06-05 17:37:18 +02:00
mmp	clk: mmp: frac: Remove set but not used variable 'prev_rate'	2019-06-07 11:54:48 -07:00
mvebu	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
mxs
nxp
pistachio	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422	2019-06-05 17:37:15 +02:00
pxa	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441	2019-06-05 17:37:17 +02:00
qcom	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
renesas	clk: renesas: cpg-mssr: Fix reset control race condition	2019-07-22 15:04:54 -07:00
rockchip	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
samsung	clk: samsung: exynos542x: Move MSCL subsystem clocks to its sub-CMU	2019-08-08 13:54:38 -07:00
sifive
sirf
socfpga	clk: socfpga: stratix10: fix rate caclulationg for cnt_clks	2019-08-14 09:23:21 -07:00
spear
sprd	clk: sprd: Select REGMAP_MMIO to avoid compile errors	2019-07-22 14:54:26 -07:00
st	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
sunxi	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
sunxi-ng	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
tegra	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
ti	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
uniphier
ux500
versatile	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
x86	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
zte	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
zynq	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 401	2019-06-05 17:37:13 +02:00
zynqmp
clk-asm9260.c
clk-aspeed.c
clk-axi-clkgen.c
clk-axm5516.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
clk-bd718x7.c	clk: bd718x7: Support ROHM BD70528 clk block	2019-06-27 10:57:24 +01:00
clk-bulk.c	clk: Add clk_bulk_get_optional() function	2019-06-25 14:28:01 -07:00
clk-cdce706.c	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
clk-cdce925.c
clk-clps711x.c
clk-composite.c
clk-conf.c
clk-cs2000-cp.c
clk-devres.c	clk: Add devm_clk_bulk_get_optional() function	2019-06-25 14:28:01 -07:00
clk-divider.c
clk-efm32gg.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
clk-fixed-factor.c
clk-fixed-mmio.c
clk-fixed-rate.c
clk-fractional-divider.c
clk-gate.c
clk-gemini.c
clk-gpio.c
clk-hi655x.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288	2019-06-05 17:36:37 +02:00
clk-highbank.c
clk-hsdk-pll.c
clk-lochnagar.c	clk: lochnagar: Use new parent_data approach to register clock parents	2019-06-25 16:29:03 -07:00
clk-max9485.c
clk-max77686.c
clk-milbeaut.c
clk-moxart.c
clk-multiplier.c
clk-mux.c
clk-nomadik.c
clk-npcm7xx.c
clk-nspire.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
clk-oxnas.c
clk-palmas.c
clk-pwm.c	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
clk-qoriq.c	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
clk-rk808.c	- Core Frameworks	2019-07-15 20:18:40 -07:00
clk-s2mps11.c
clk-scmi.c
clk-scpi.c
clk-si514.c
clk-si544.c	clk: clk-si544: Implement small frequency change support	2019-06-27 13:45:38 -07:00
clk-si570.c
clk-si5341.c	clk: Add Si5341/Si5340 driver	2019-06-27 14:06:47 -07:00
clk-si5351.c
clk-si5351.h
clk-stm32f4.c
clk-stm32h7.c
clk-stm32mp1.c
clk-tango4.c
clk-twl6040.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336	2019-06-05 17:37:07 +02:00
clk-u300.c
clk-versaclock5.c
clk-vt8500.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282	2019-06-05 17:36:37 +02:00
clk-wm831x.c
clk-xgene.c
clk.c	clk: Fix potential NULL dereference in clk_fetch_parent_index()	2019-08-16 10:30:21 -07:00
clk.h	clk: consoldiate the __clk_get_hw() declarations	2019-07-12 11:00:14 -07:00
clkdev.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
Kconfig	This round of clk driver and framework updates is heavy on the driver update	2019-07-17 10:07:48 -07:00
Makefile	clk: Add Si5341/Si5340 driver	2019-06-27 14:06:47 -07:00