leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
55db8387a5
linux/drivers
History
Herbert Xu 55db8387a5 hwrng: via_rng - Fix memory scribbling on some CPUs 
It has been reported that on at least one Nano CPU the xstore
instruction will write as many as 16 bytes of data to the output
buffer.

This causes memory corruption as we use rng->priv which is only
4-8 bytes long.

This patch fixes this by using an intermediate buffer on the stack
with at least 16 bytes and aligned to a 16-byte boundary.

The problem was observed on the following processor:

processor	: 0
vendor_id	: CentaurHauls
cpu family	: 6
model		: 15
model name	: VIA Nano processor U2250 (1.6GHz Capable)
stepping	: 3
cpu MHz		: 1600.000
cache size	: 1024 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 10
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush acpi mmx fxsr sse sse2 ss tm syscall nx lm constant_tsc up rep_good pni monitor vmx est tm2 ssse3 cx16 xtpr rng rng_en ace ace_en ace2 phe phe_en lahf_lm
bogomips	: 3192.08
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

Tested-by: Mario 'BitKoenig' Holbe <Mario.Holbe@TU-Ilmenau.DE>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2011-01-07 14:55:06 +11:00
..
accessibility
acpi Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2010-10-26 17:28:37 -07:00
amba
ata Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
atm drivers/atm/eni.c: Remove multiple uses of KERN_<level> 2010-10-26 11:35:37 -07:00
auxdisplay
base Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 2010-10-26 17:31:05 -07:00
block mm: strictly nested kmap_atomic() 2010-10-26 16:52:08 -07:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-10-23 11:47:02 -07:00
cdrom
char hwrng: via_rng - Fix memory scribbling on some CPUs 2011-01-07 14:55:06 +11:00
clocksource
connector connector: remove lazy workqueue creation 2010-10-24 14:20:01 -07:00
cpufreq [CPUFREQ] add sampling_down_factor tunable to improve ondemand performance 2010-10-22 11:44:47 -04:00
cpuidle
crypto crypto: padlock - Move padlock.h into include/crypto 2011-01-07 14:52:00 +11:00
dca
dio
dma Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2010-10-27 19:04:36 -07:00
edac Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/i7core 2010-10-26 10:13:48 -07:00
eisa
firewire Merge branch 'ieee1394-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2010-10-25 08:05:29 -07:00
firmware dmi: log board, system, and BIOS information 2010-10-27 18:03:05 -07:00
gpio langwell_gpio: add support for whitney point 2010-10-27 18:03:07 -07:00
gpu Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2010-10-27 20:37:06 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2010-10-25 07:59:01 -07:00
hwmon hwmon: lis3: Release resources in case of failure 2010-10-25 14:44:59 -07:00
i2c NULL-terminate all pci_device_id tables 2010-10-27 20:33:05 +10:30
ide Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
idle Merge branch 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6 2010-10-26 17:28:07 -07:00
ieee802154
infiniband Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2010-10-26 17:58:44 -07:00
input Merge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci 2010-10-25 10:59:31 -07:00
isdn drivers/isdn: delete double assignment 2010-10-27 12:23:21 -07:00
leds
lguest
macintosh replace nested max/min macros with {max,min}3 macro 2010-10-26 16:52:12 -07:00
mca
md workqueues: s/ON_STACK/ONSTACK/ 2010-10-26 16:52:14 -07:00
media Remove duplicate includes from many files 2010-10-27 18:03:18 -07:00
memstick
message Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2010-10-22 17:34:15 -07:00
mfd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 2010-10-25 08:32:05 -07:00
misc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2010-10-26 17:58:44 -07:00
mmc at91/atmel-mci: inclusion of sd/mmc driver in at91sam9g45 chip and board 2010-10-26 11:32:49 +02:00
mtd Merge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci 2010-10-25 10:59:31 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300 2010-10-27 18:53:26 -07:00
nubus
of of/mips: Cleanup some include directives/files. 2010-10-21 11:10:11 -06:00
oprofile fs: do not assign default i_ino in new_inode 2010-10-25 21:26:11 -04:00
parisc Update broken web addresses in the kernel. 2010-10-18 11:03:14 +02:00
parport Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
pci proc_bus_pci_ioctl: remove pointless BKL usage 2010-10-27 18:34:59 -07:00
pcmcia Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
platform Remove duplicate includes from many files 2010-10-27 18:03:18 -07:00
pnp Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2010-10-26 17:28:37 -07:00
power Merge git://git.infradead.org/battery-2.6 2010-10-26 10:14:23 -07:00
pps
ps3
rapidio rapidio: fix destructive port EM initialization for Tsi568 2010-10-27 18:03:16 -07:00
regulator
rtc drivers/rtc/rtc-jz4740.c: add alarm function 2010-10-27 18:03:06 -07:00
s390 [S390] cleanup facility list handling 2010-10-25 16:10:21 +02:00
sbus Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 2010-10-25 08:19:14 -07:00
scsi Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
serial Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 2010-10-25 13:46:56 -07:00
sfi
sh sh: clkfwk: Shuffle around to match the intc split up. 2010-10-18 21:32:58 +09:00
sn
spi Merge branch 'for-next' of git://android.git.kernel.org/kernel/tegra 2010-10-25 18:42:06 -07:00
ssb
staging fs: add sync_inode_metadata 2010-10-25 21:18:19 -04:00
tc
telephony Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
thermal
uio Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
usb fix braino in fs: do not assign default i_ino in new_inode 2010-10-26 20:25:45 -07:00
uwb uwb: Remove the WLP subsystem and drivers 2010-10-25 14:03:45 +01:00
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-10-23 11:47:02 -07:00
video Merge branch 'viafb-next' of git://github.com/schandinat/linux-2.6 2010-10-27 19:02:41 -07:00
virtio
vlynq
w1 w1: don't allow arbitrary users to remove w1 devices 2010-10-27 18:03:17 -07:00
watchdog Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 2010-10-25 13:46:56 -07:00
xen Merge branches 'upstream/xenfs' and 'upstream/core' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen 2010-10-26 18:20:19 -07:00
zorro zorro: Fix device_register() error handling 2010-10-22 09:43:25 +02:00
Kconfig
Makefile Merge branch 'ieee1394-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2010-10-25 08:05:29 -07:00