Michael Büsch 837bf7cc3b hwrng: core - Always drop the RNG in hwrng_unregister() ... enable_best_rng() is used in hwrng_unregister() to switch away from the currently active RNG, if that is the one currently being removed. However enable_best_rng() might fail, if the next RNG's init routine fails. In that case enable_best_rng() will return an error code and the currently active RNG will remain active. After unregistering this might lead to crashes due to use-after-free. Fix this by dropping the currently active RNG, if enable_best_rng() failed. This will result in no RNG to be active, if the next-best one failed to initialize. This problem was introduced by 142a27f0a7 Fixes: 142a27f0a7 ("hwrng: core - Reset user selected rng by...") Reported-by: Wirz <spam@lukas-wirz.de> Tested-by: Wirz <spam@lukas-wirz.de> Signed-off-by: Michael Büsch <m@bues.ch> Cc: stable@vger.kernel.org Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>		2018-06-15 23:06:49 +08:00
..
Kconfig	hwrng: stm32 - define default state for rng driver	2018-05-05 14:52:47 +08:00
Makefile	hwrng: ks-sa - add hw_random driver	2018-03-23 23:40:08 +08:00
amd-rng.c	hwrng: amd - Revert managed API changes	2017-03-16 17:43:10 +08:00
atmel-rng.c	hwrng: atmel - use clk_disable_unprepare instead of clk_disable	2016-11-17 23:34:57 +08:00
bcm2835-rng.c	hwrng: bcm2835 - Handle deferred clock properly	2018-02-22 22:16:21 +08:00
cavium-rng-vf.c	hwrng: cavium - make two functions static	2018-03-09 22:45:34 +08:00
cavium-rng.c	hwrng: cavium - make two functions static	2018-03-09 22:45:34 +08:00
core.c	hwrng: core - Always drop the RNG in hwrng_unregister()	2018-06-15 23:06:49 +08:00
exynos-trng.c	hwrng: exynos - remove redundant dev_err call in exynos_trng_probe()	2018-01-18 22:52:26 +11:00
geode-rng.c	hwrng: geode - Revert managed API changes	2017-03-16 17:43:11 +08:00
hisi-rng.c	hwrng: hisi - Add support for Hisilicon SoC RNG	2016-04-15 22:36:36 +08:00
imx-rngc.c	hwrng: imx-rngc - make symbol imx_rngc_pm_ops static	2018-02-15 23:26:44 +08:00
intel-rng.c	hwrng: printk replacement	2014-10-02 14:35:00 +08:00
iproc-rng200.c	hwrng: iproc-rng200 - Add support for BCM7278	2017-11-10 19:20:12 +08:00
ixp4xx-rng.c	IXP4xx: HW pseudo-random generator is available on IXP45x/46x only.	2012-11-22 03:35:39 +00:00
ks-sa-rng.c	hwrng: ks-sa - add hw_random driver	2018-03-23 23:40:08 +08:00
meson-rng.c	hwrng: meson - add clock handling to driver	2017-03-16 17:58:49 +08:00
msm-rng.c	hwrng: Make explicit that max >= 32 always	2016-11-21 22:50:45 +08:00
mtk-rng.c	hwrng: mediatek - Setup default RNG quality	2018-01-18 22:52:25 +11:00
mxc-rnga.c	hwrng: mxc-rnga - add driver support on boards with device tree	2018-03-16 23:35:44 +08:00
n2-asm.S	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
n2-drv.c	hwrng: n2 - fix spelling mistake: "restesting" -> "retesting"	2018-05-19 00:13:53 +08:00
n2rng.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
nomadik-rng.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2014-04-03 09:28:16 -07:00
octeon-rng.c	hwrng: octeon - Use devm_hwrng_register	2015-09-21 22:00:38 +08:00
omap-rng.c	hwrng: omap - Fix clock resource by adding a register clock	2018-03-09 22:45:45 +08:00
omap3-rom-rng.c	hwrng: omap3-rom - Handle return value of clk_prepare_enable	2017-05-23 12:52:03 +08:00
pasemi-rng.c	hwrng: pasemi - Use linux/io.h instead of asm/io.h	2016-09-13 20:27:21 +08:00
pic32-rng.c	hwrng: Make explicit that max >= 32 always	2016-11-21 22:50:45 +08:00
powernv-rng.c	char: constify of_device_id array	2015-03-16 21:10:28 +01:00
pseries-rng.c	hwrng: pseries - constify vio_device_id	2017-09-22 17:43:05 +08:00
s390-trng.c	s390/trng: Introduce s390 TRNG device driver.	2017-04-26 13:41:36 +02:00
st-rng.c	hwrng: st - Fix missing clk_disable_unprepare() on error in st_rng_probe()	2016-09-13 20:27:24 +08:00
stm32-rng.c	hwrng: stm32 - fix pm_suspend issue	2018-05-05 14:52:49 +08:00
timeriomem-rng.c	hwrng: timeriomem - Remove 'max < 4' condition check	2017-09-22 17:43:14 +08:00
tx4939-rng.c	hwrng: tx4939 - Use devm_hwrng_register instead of hwrng_register	2016-08-31 23:00:49 +08:00
via-rng.c	hwrng: via - support new Centaur CPU	2018-04-21 00:59:03 +08:00
virtio-rng.c	hwrng: virtio - Virtio RNG devices need to be re-registered after suspend/resume	2017-11-06 14:45:06 +08:00
xgene-rng.c	hwrng: xgene - Convert timers to use timer_setup()	2017-11-03 22:11:16 +08:00