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Josh Zimmerman 26a137e31f tpm_tis: Check return values from get_burstcount. 
If the TPM we're connecting to uses a static burst count, it will report
a burst count of zero throughout the response read. However, get_burstcount
assumes that a response of zero indicates that the TPM is not ready to
receive more data. In this case, it returns a negative error code, which
is passed on to tpm_tis_{write,read}_bytes as a u16, causing
them to read/write far too many bytes.

This patch checks for negative return codes and bails out from recv_data
and tpm_tis_send_data.

Cc: stable@vger.kernel.org
Fixes: 1107d065fd (tpm_tis: Introduce intermediate layer for TPM access)
Signed-off-by: Josh Zimmerman <joshz@google.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
 		2016-11-28 01:31:30 +02:00
..
agp agp/intel: Flush chipset writes after updating a single PTE 2016-08-18 22:36:23 +01:00
hw_random hwrng: core - Don't use a stack buffer in add_early_randomness() 2016-10-19 11:20:21 +08:00
ipmi ipmi: fix crash on reading version from proc after unregisted bmc 2016-10-03 09:09:47 -05:00
mwave char/mwave: remove custom BOOLEAN type 2016-08-31 14:22:49 +02:00
pcmcia TTY and Serial driver update for 4.7-rc1 2016-05-20 20:57:27 -07:00
tpm tpm_tis: Check return values from get_burstcount. 2016-11-28 01:31:30 +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
Kconfig RTC for 4.8 2016-08-05 09:48:22 -04:00
Makefile RTC for 4.8 2016-08-05 09:48:22 -04:00
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
…
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
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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
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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
lp.c char: Int overflow in lp_do_ioctl(). 2013-12-18 16:39:54 -08:00
mbcs.c don't open-code generic_file_llseek_size() 2015-12-09 13:00:45 -05:00
mbcs.h
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mem.c drivers: char: mem: Check {read,write}_kmem() addresses 2016-08-31 15:21:18 +02:00
misc.c char: make misc_deregister a void function 2015-08-05 10:35:49 -07:00
mmtimer.c
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mspec.c tree wide: use kvfree() than conditional kfree()/vfree() 2016-01-22 17:02:18 -08:00
nsc_gpio.c
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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
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nwflash.c new helpers: no_seek_end_llseek{,_size}() 2015-12-23 10:41:31 -05:00
pc8736x_gpio.c
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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 double-free of pp->pdev->name 2016-11-10 15:24:02 +01:00
ps3flash.c wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
random.c This adds a new gcc plugin named "latent_entropy". It is designed to 2016-10-15 10:03:15 -07:00
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
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snsc.c snsc: check return value of class_create 2016-08-31 14:47:54 +02:00
snsc.h
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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
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virtio_console.c virtio: console: Unlock vqs while freeing buffers 2016-10-31 00:21:44 +02:00