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Linus Torvalds dc1555e670 Fix potential infoleak in older kernels 
Not upstream as it is not needed there.

So a patch something like this might be a safe way to fix the
potential infoleak in older kernels.

THIS IS UNTESTED. It's a very obvious patch, though, so if it compiles
it probably works. It just initializes the output variable with 0 in
the inline asm description, instead of doing it in the exception
handler.

It will generate slightly worse code (a few unnecessary ALU
operations), but it doesn't have any interactions with the exception
handler implementation.


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-11-10 16:36:34 +01:00
..
alpha alpha: fix copy_from_user() 2016-09-24 10:07:45 +02:00
arc arc: don't leak bits of kernel stack into coredump 2016-10-28 03:01:32 -04:00
arm ARM: pxa: pxa_cplds: fix interrupt handling 2016-10-31 04:14:01 -06:00
arm64 arm64: kernel: Init MDCR_EL2 even in the absence of a PMU 2016-10-28 03:01:35 -04:00
avr32 avr32: off by one in at32_init_pio() 2016-10-07 15:23:45 +02:00
blackfin net: smc91x: fix SMC accesses 2016-09-30 10:18:37 +02:00
c6x irqdomain: Use irq_domain_get_of_node() instead of direct field access 2015-10-13 19:01:23 +02:00
cris cris: buggered copy_from_user/copy_to_user/clear_user 2016-09-24 10:07:44 +02:00
frv frv: fix clear_user() 2016-09-24 10:07:44 +02:00
h8300 h8300: fix syscall restarting 2016-11-10 16:36:32 +01:00
hexagon hexagon: fix strncpy_from_user() error return 2016-09-24 10:07:44 +02:00
ia64 ia64: copy_from_user() should zero the destination on access_ok() failure 2016-09-24 10:07:46 +02:00
m32r m32r: fix __get_user() 2016-09-24 10:07:43 +02:00
m68k m68k: Wire up mlock2 2015-11-22 11:35:26 +01:00
metag metag: Only define atomic_dec_if_positive conditionally 2016-10-28 03:01:31 -04:00
microblaze microblaze: fix copy_from_user() 2016-09-24 10:07:43 +02:00
mips MIPS: ptrace: Fix regs_return_value for kernel context 2016-10-28 03:01:30 -04:00
mn10300 mn10300: copy_from_user() should zero on access_ok() failure... 2016-09-24 10:07:45 +02:00
nios2 nios2: copy_from_user() should zero the tail of destination 2016-09-24 10:07:45 +02:00
openrisc openrisc: fix the fix of copy_from_user() 2016-09-24 10:07:46 +02:00
parisc parisc: Increase initial kernel mapping size 2016-10-28 03:01:27 -04:00
powerpc powerpc/nvram: Fix an incorrect partition merge 2016-10-31 04:14:01 -06:00
s390 s390/mm: fix gmap tlb flush issues 2016-10-28 03:01:34 -04:00
score score: fix copy_from_user() and friends 2016-09-24 10:07:44 +02:00
sh sh: fix copy_from_user() 2016-09-24 10:07:44 +02:00
sparc sparc32: fix copy_from_user() 2016-09-24 10:07:45 +02:00
tile tile: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO 2016-10-07 15:23:44 +02:00
um um: Don't discard .text.exit section 2016-09-07 08:32:38 +02:00
unicore32 pwm: Changes for v4.4-rc1 2015-11-11 09:16:10 -08:00
x86 Fix potential infoleak in older kernels 2016-11-10 16:36:34 +01:00
xtensa xtensa: clear all DBREAKC registers on start 2016-04-12 09:08:55 -07:00
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