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Helge Deller ae53e64ea3 parisc: Fix map_pages() to not overwrite existing pte entries 
commit 3c229b3f2dd8133f61bb81d3cb018be92f4bba39 upstream.

Fix a long-existing small nasty bug in the map_pages() implementation which
leads to overwriting already written pte entries with zero, *if* map_pages() is
called a second time with an end address which isn't aligned on a pmd boundry.
This happens for example if we want to remap only the text segment read/write
in order to run alternative patching on the code. Exiting the loop when we
reach the end address fixes this.

Cc: stable@vger.kernel.org
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-11-21 09:27:30 +01:00
..
alpha sys: don't hold uts_sem while accessing userspace memory 2018-09-09 20:04:35 +02:00
arc ARC: build: Get rid of toolchain check 2018-10-20 09:52:38 +02:00
arm ARM: dts: imx53-qsb: disable 1.2GHz OPP 2018-11-10 07:41:40 -08:00
arm64 arm64: Fix potential race with hardware DBM in ptep_set_access_flags() 2018-11-10 07:41:37 -08:00
avr32 avr32: off by one in at32_init_pio() 2016-10-07 15:23:45 +02:00
blackfin pinctrl: adi2: Fix Kconfig build problem 2017-12-20 10:05:00 +01:00
c6x c6x/ptrace: Remove useless PTRACE_SETREGSET implementation 2017-03-31 09:49:53 +02:00
cris cris: Only build flash rescue image if CONFIG_ETRAX_AXISFLASHMAP is selected 2017-01-12 11:22:48 +01:00
frv futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
h8300 h8300/ptrace: Fix incorrect register transfer count 2017-03-31 09:49:53 +02:00
hexagon hexagon: modify ffs() and fls() to return int 2018-10-10 08:52:12 +02:00
ia64 futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
m32r m32r: fix __get_user() 2016-09-24 10:07:43 +02:00
m68k m68k: fix "bad page state" oops on ColdFire boot 2018-08-24 13:26:57 +02:00
metag metag/uaccess: Check access_ok in strncpy_from_user 2017-05-25 14:30:16 +02:00
microblaze microblaze: Fix simpleImage format generation 2018-08-06 16:24:39 +02:00
mips MIPS: DEC: Fix an int-handler.S CPU_DADDI_WORKAROUNDS regression 2018-11-10 07:41:40 -08:00
mn10300 mn10300/misalignment: Use SIGSEGV SEGV_MAPERR to report a failed user copy 2018-02-16 20:09:47 +01:00
nios2 nios2: reserve boot memory for device tree 2017-04-12 12:38:34 +02:00
openrisc kthread: fix boot hang (regression) on MIPS/OpenRISC 2018-09-19 22:48:55 +02:00
parisc parisc: Fix map_pages() to not overwrite existing pte entries 2018-11-21 09:27:30 +01:00
powerpc powerpc/tm: Avoid possible userspace r1 corruption on reclaim 2018-10-20 09:52:38 +02:00
s390 s390/extmem: fix gcc 8 stringop-overflow warning 2018-10-10 08:52:05 +02:00
score score: fix copy_from_user() and friends 2016-09-24 10:07:44 +02:00
sh sh: New gcc support 2018-06-06 16:46:20 +02:00
sparc sparc64: Fix exception handling in UltraSPARC-III memcpy. 2018-11-10 07:41:39 -08:00
tile futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
um um: Avoid longjmp/setjmp symbol clashes with libpthread.a 2018-11-10 07:41:35 -08:00
unicore32 pwm: Changes for v4.4-rc1 2015-11-11 09:16:10 -08:00
x86 x86/time: Correct the attribute on jiffies' definition 2018-11-10 07:41:43 -08:00
xtensa signal/xtensa: Consistenly use SIGBUS in do_unaligned_user 2018-07-03 11:21:26 +02:00
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Kconfig