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Jia-Ju Bai 4533d08b65 net: phy: phy_led_triggers: Fix a possible null-pointer dereference in phy_led_trigger_change_speed() 
[ Upstream commit 271da132e2 ]

In phy_led_trigger_change_speed(), there is an if statement on line 48
to check whether phy->last_triggered is NULL:
    if (!phy->last_triggered)

When phy->last_triggered is NULL, it is used on line 52:
    led_trigger_event(&phy->last_triggered->trigger, LED_OFF);

Thus, a possible null-pointer dereference may occur.

To fix this bug, led_trigger_event(&phy->last_triggered->trigger,
LED_OFF) is called when phy->last_triggered is not NULL.

This bug is found by a static analysis tool STCheck written by
the OSLAB group in Tsinghua University.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-08-29 08:28:36 +02:00
..
amd.c
aquantia.c net: phy: aquantia: Utilize genphy_c45_aneg_done() 2018-03-01 21:23:34 -05:00
at803x.c
ax88796b.c net: phy: rename Asix Electronics PHY driver 2019-07-14 08:11:08 +02:00
bcm-cygnus.c net: phy: broadcom: Fix bcm_write_exp() 2018-05-23 15:27:01 -04:00
bcm-phy-lib.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-05-26 19:46:15 -04:00
bcm-phy-lib.h net: phy: broadcom: Fix bcm_write_exp() 2018-05-23 15:27:01 -04:00
bcm7xxx.c net: phy: Add support for Broadcom Omega internal Combo GPHY 2018-08-07 15:48:38 -07:00
bcm63xx.c
bcm87xx.c
broadcom.c net: phy: broadcom: Enable 125 MHz clock on LED4 pin for BCM54612E by default. 2018-06-05 09:43:09 -04:00
cicada.c
cortina.c net: phy: cortina: Utilize generic functions 2018-03-01 21:23:35 -05:00
davicom.c
dp83tc811.c net: phy: DP83TC811: Fix SGMII enable/disable 2018-07-03 11:38:07 +09:00
dp83640.c net: dp83640: expire old TX-skb 2019-02-12 19:47:21 +01:00
dp83640_reg.h
dp83822.c
dp83848.c net: phy: dp83822: use BMCR_ANENABLE instead of BMSR_ANEGCAPABLE for DP83620 2018-06-10 12:38:03 -07:00
dp83867.c net: phy: dp83867: Set up RGMII TX delay 2019-06-22 08:15:20 +02:00
et1011c.c
fixed_phy.c net: phy: fixed-phy: Make the error path simpler 2018-06-24 16:41:58 +09:00
icplus.c
intel-xway.c net: phy: intel-xway: add VR9 v1.1 phy ids 2018-03-23 13:19:49 -04:00
Kconfig net: phy: rename Asix Electronics PHY driver 2019-07-14 08:11:08 +02:00
lxt.c
Makefile net: phy: rename Asix Electronics PHY driver 2019-07-14 08:11:08 +02:00
marvell.c net: phy: marvell: Fix buffer overrun with stats counters 2019-05-05 14:42:38 +02:00
marvell10g.c net: phy: marvell10g: report if the PHY fails to boot firmware 2019-06-04 08:02:32 +02:00
mdio-bcm-iproc.c
mdio-bcm-unimac.c
mdio-bitbang.c net: phy: mdio-bitbang: Remove reset support 2018-04-19 15:59:10 -04:00
mdio-boardinfo.c net: phy: mdio-boardinfo: Allow recursive mdiobus_register() 2018-04-20 10:33:26 -04:00
mdio-boardinfo.h
mdio-cavium.c
mdio-cavium.h
mdio-gpio.c net: phy: mdio-gpio: Fix working over slow can_sleep GPIOs 2018-11-23 08:17:06 +01:00
mdio-hisi-femac.c
mdio-i2c.c
mdio-i2c.h
mdio-moxart.c
mdio-mscc-miim.c drivers: net: Remove device_node checks with of_mdiobus_register() 2018-05-16 14:20:36 -04:00
mdio-mux-bcm-iproc.c net: phy: Add pm support to Broadcom iProc mdio mux driver 2018-08-02 14:36:49 -07:00
mdio-mux-gpio.c mdio-mux-gpio: Remove VLA usage 2018-06-26 23:24:07 +09:00
mdio-mux-mmioreg.c net: phy: mdio-mux: slience probe defer error 2018-03-07 12:39:59 -05:00
mdio-mux.c
mdio-octeon.c
mdio-sun4i.c
mdio-thunder.c
mdio-xgene.c
mdio-xgene.h
mdio_bus.c mdio_bus: Fix use-after-free on device_register fails 2019-03-19 13:12:40 +01:00
mdio_device.c
meson-gxl.c net: phy: meson-gxl: fix interrupt support 2019-04-03 06:26:17 +02:00
micrel.c net: phy: Micrel KSZ8061: link failure after cable connect 2019-03-10 07:17:18 +01:00
microchip.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-04-21 16:32:48 -04:00
microchip_t1.c microchip_t1: Add driver for Microchip LAN87XX T1 PHYs 2018-05-10 14:16:36 -04:00
mscc.c net: phy: mscc: the extended page access register is 16 bits 2018-07-30 09:42:32 -07:00
national.c
phy-c45.c net: phy: consider latched link-down status in polling mode 2019-04-05 22:33:10 +02:00
phy-core.c net: phy: Fix spelling mistake: "advertisment"-> "advertisement" 2018-03-04 18:11:54 -05:00
phy.c net: phy: add helper phy_polling_mode 2018-07-25 13:41:22 -07:00
phy_device.c net: phy: Check against net_device being NULL 2019-07-26 09:14:02 +02:00
phy_led_triggers.c net: phy: phy_led_triggers: Fix a possible null-pointer dereference in phy_led_trigger_change_speed() 2019-08-29 08:28:36 +02:00
phylink.c net: phylink: Fix flow control for fixed-link 2019-08-09 17:52:31 +02:00
qsemi.c
realtek.c net: phy: realtek: fix RTL8201F sysfs name 2018-11-23 08:17:06 +01:00
rockchip.c
sfp-bus.c net: sfp: do not probe SFP module before we're attached 2019-02-27 10:08:58 +01:00
sfp.c net: phy: sfp: hwmon: Fix scaling of RX power 2019-07-28 08:29:24 +02:00
sfp.h net: sfp: do not probe SFP module before we're attached 2019-02-27 10:08:58 +01:00
smsc.c drivers: net: replace UINT64_MAX with U64_MAX 2018-04-27 20:18:55 -04:00
spi_ks8995.c spi: Micrel eth switch: declare missing of table 2019-05-16 19:41:25 +02:00
ste10Xp.c
swphy.c
swphy.h
teranetics.c net: phy: teranetics: Utilize generic functions 2018-03-01 21:23:34 -05:00
uPD60620.c
vitesse.c net: phy: vitesse: Add support for VSC73xx 2018-07-04 11:30:02 +09:00
xilinx_gmii2rgmii.c net: phy: xgmiitorgmii: Support generic PHY status read 2019-02-23 09:07:25 +01:00