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linux/drivers/char
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Hon Ching \(Vicky) Lo 7dfe7ca9ec vTPM: Fix missing NULL check 
commit 31574d321c upstream.

The current code passes the address of tpm_chip as the argument to
dev_get_drvdata() without prior NULL check in
tpm_ibmvtpm_get_desired_dma.  This resulted an oops during kernel
boot when vTPM is enabled in Power partition configured in active
memory sharing mode.

The vio_driver's get_desired_dma() is called before the probe(), which
for vtpm is tpm_ibmvtpm_probe, and it's this latter function that
initializes the driver and set data.  Attempting to get data before
the probe() caused the problem.

This patch adds a NULL check to the tpm_ibmvtpm_get_desired_dma.

fixes: 9e0d39d8a6 ("tpm: Remove useless priv field in struct tpm_vendor_specific")
Signed-off-by: Hon Ching(Vicky) Lo <honclo@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkine <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2017-06-24 07:11:17 +02:00
..
agp agp/intel: Flush chipset writes after updating a single PTE 2016-08-18 22:36:23 +01:00
hw_random hwrng: geode - Revert managed API changes 2017-03-30 09:41:26 +02:00
ipmi ipmi: Fix kernel panic at ipmi_ssif_thread() 2017-05-20 14:28:41 +02:00
mwave char/mwave: remove custom BOOLEAN type 2016-08-31 14:22:49 +02:00
pcmcia pcmcia: remove left-over %Z format 2017-06-07 12:07:48 +02:00
tpm vTPM: Fix missing NULL check 2017-06-24 07:11:17 +02:00
xilinx_hwicap char:xilinx_hwicap:buffer_icap - change 1/0 to true/false for bool type variable in function buffer_icap_set_configuration(). 2015-06-12 16:58:33 -07:00
xillybus char: xillybus: Fix spelling mistake and comment 2016-08-31 14:47:54 +02:00
apm-emulation.c apm-emulation: add hibernation APM events to support suspend2disk 2014-01-07 13:50:28 +01:00
applicom.c applicom: dereferencing NULL on error path 2014-05-27 17:43:12 -07:00
applicom.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bfin-otp.c miscdevice: Use module_misc_device() macro 2016-08-31 14:12:35 +02:00
bsr.c bsr: avoid format string leaking into device name 2014-07-09 16:59:15 -07:00
ds1302.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ds1620.c ds1620: single_open() leak 2013-05-05 00:11:29 -04:00
dsp56k.c dsp56k: prevent a harmless underflow 2016-07-14 16:21:53 +09:00
dtlk.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
efirtc.c drivers/char: make efirtc.c driver explicitly non-modular 2015-09-20 19:32:35 -07:00
generic_nvram.c don't open-code generic_file_llseek_size() 2015-12-09 13:00:45 -05:00
hangcheck-timer.c hangcheck-timer: cleanup casting in hangcheck_init() 2014-11-07 11:24:01 -08:00
hpet.c hpet: Drop stale URLs 2016-02-17 09:39:56 +01:00
Kconfig char: lack of bool string made CONFIG_DEVPORT always on 2017-04-21 09:31:22 +02:00
lp.c char: lp: fix possible integer overflow in lp_setup() 2017-05-25 15:44:30 +02:00
Makefile RTC for 4.8 2016-08-05 09:48:22 -04:00
mbcs.c don't open-code generic_file_llseek_size() 2015-12-09 13:00:45 -05:00
mbcs.h Fix common misspellings 2011-03-31 11:26:23 -03:00
mem.c drivers: char: mem: Fix wraparound check to allow mappings up to the end 2017-06-14 15:06:04 +02:00
misc.c char: make misc_deregister a void function 2015-08-05 10:35:49 -07:00
mmtimer.c drivers/char/mmtimer.c: Remove useless kfree 2012-09-26 13:20:40 -07:00
mspec.c tree wide: use kvfree() than conditional kfree()/vfree() 2016-01-22 17:02:18 -08:00
nsc_gpio.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
nvram.c char/nvram: set array of const as const 2016-02-08 14:57:30 -08:00
nwbutton.c char: nwbutton: avoid unused variable warning 2016-02-09 17:39:56 -08:00
nwbutton.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
nwflash.c new helpers: no_seek_end_llseek{,_size}() 2015-12-23 10:41:31 -05:00
pc8736x_gpio.c pc8736x_gpio: use platform_device_unregister in pc8736x_gpio_cleanup() 2012-10-24 15:52:29 -07:00
powernv-op-panel.c powerpc/powernv: Add driver for operator panel on FSP machines 2016-06-29 17:33:46 +10:00
ppdev.c ppdev: fix registering same device name 2017-04-12 12:41:10 +02:00
ps3flash.c wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
random.c random: use chacha20 for get_random_int/long 2017-04-12 12:41:15 +02:00
raw.c drivers: char: raw: Removed unnecessary braces 2016-02-08 14:57:30 -08:00
rtc.c various char drivers: remove deprecated IRQF_DISABLED 2013-10-16 12:36:10 -07:00
scx200_gpio.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
snsc.c snsc: check return value of class_create 2016-08-31 14:47:54 +02:00
snsc.h headers: kobject.h redux 2011-01-10 08:51:44 -08:00
snsc_event.c various char drivers: remove deprecated IRQF_DISABLED 2013-10-16 12:36:10 -07:00
sonypi.c fs: Replace current_fs_time() with current_time() 2016-09-27 21:06:22 -04:00
tb0219.c mips: separate extable.h, switch module.h to it 2016-10-05 18:36:18 -04:00
tile-srom.c tile-srom: avoid krealloc(... __GFP_ZERO) pattern 2016-08-30 14:45:50 +02:00
tlclk.c tlclk: remove deprecated IRQF_DISABLED 2013-10-16 12:36:10 -07:00
toshiba.c toshiba laptop: replace ioremap_cache with ioremap 2015-08-05 17:26:00 -07:00
ttyprintk.c ttyprintk: Neaten and simplify printing 2016-09-13 17:30:17 +02:00
uv_mmtimer.c BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
virtio_console.c virtio-console: avoid DMA from stack 2017-04-21 09:31:24 +02:00