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098362e720
linux/arch/mips
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David Daney 098362e720 [MIPS] Add len and addr validation for MAP_FIXED mappings. 
Mmap with MAP_FIXED was not validating the addr and len parameters.  This
leads to the failure of GCC's gcc.c-torture/execute/loop-2[fg].c testcases
when using the o32 ABI on a 64 bit kernel.

These testcases try to mmap 65536 bytes at 0x7fff8000 and then access all
the memory.  In 2.6.18 and 2.6.23.1 (and likely other versions as well)
the kernel maps the requested memory, but since half of it is above
0x80000000 a SIGBUS is generated when it is accessed.

This patch moves the len validation above the MAP_FIXED processing so that
it is always validated.  It also adds validation to the addr parameter for
MAP_FIXED mappings.

Signed-off-by: David Daney  <ddaney@avtrex.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-29 19:35:36 +00:00
..
au1000 [MIPS] Alchemy: Convert from plat_timer_setup to plat_time_init. 2007-10-29 19:35:33 +00:00
basler/excite [MIPS] time: Merge eXcite plat_timer_setup into plat_time_init. 2007-10-29 19:35:34 +00:00
bcm47xx [MIPS] Kill duplicated setup_irq() for cp0 timer 2007-10-19 18:15:58 +01:00
boot [MIPS] checkfiles: Fix "need space after that ','" errors. 2007-10-11 23:46:15 +01:00
cobalt [MIPS] time: Add GT641xx timer0 clockevent driver 2007-10-22 22:09:00 +01:00
configs Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus 2007-10-19 12:01:22 -07:00
dec [MIPS] Allow hardwiring of the CPU type to a single type for optimization. 2007-10-11 23:46:15 +01:00
emma2rh [MIPS] Kill duplicated setup_irq() for cp0 timer 2007-10-19 18:15:58 +01:00
fw [MIPS] Fix "no space between function name and open parenthesis" warnings. 2007-10-11 23:46:15 +01:00
gt64120/wrppmc [MIPS] time: Remove wrppmc's definition of plat_timer_setup. 2007-10-29 19:35:34 +00:00
jazz [MIPS] Jazz: Retire use of plat_timer_setup. 2007-10-18 18:11:47 +01:00
jmr3927 [MIPS] txx9tmr clockevent/clocksource driver 2007-10-29 19:35:35 +00:00
kernel [MIPS] Add len and addr validation for MAP_FIXED mappings. 2007-10-29 19:35:36 +00:00
lasat [MIPS] time: Merge lasat plat_timer_setup into plat_time_init. 2007-10-29 19:35:34 +00:00
lemote/lm2e [MIPS] Kill duplicated setup_irq() for cp0 timer 2007-10-19 18:15:58 +01:00
lib [MIPS] Fix "no space between function name and open parenthesis" warnings. 2007-10-11 23:46:15 +01:00
math-emu [MIPS] checkfiles: Fix "need space after that ','" errors. 2007-10-11 23:46:15 +01:00
mips-boards [MIPS] time: Replace plat_timer_setup with modern APIs. 2007-10-29 19:35:36 +00:00
mipssim [MIPS] time: Replace plat_timer_setup with modern APIs. 2007-10-29 19:35:36 +00:00
mm [MIPS] Cleanup random difference between the lmo and kernel.org tree. 2007-10-29 19:35:33 +00:00
oprofile Combine instrumentation menus in kernel/Kconfig.instrumentation 2007-10-19 11:53:54 -07:00
pci Fix misspellings of "system", "controller", "interrupt" and "necessary". 2007-10-19 23:10:43 +02:00
philips/pnx8550 [MIPS] checkfiles: Fix "need space after that ','" errors. 2007-10-11 23:46:15 +01:00
pmc-sierra [MIPS] Kill duplicated setup_irq() for cp0 timer 2007-10-19 18:15:58 +01:00
qemu [MIPS] Fix "no space between function name and open parenthesis" warnings. 2007-10-11 23:46:15 +01:00
sgi-ip22 [MIPS] IP22: Fix hang due to messing with timer interrupt handler 2007-10-17 18:28:49 +01:00
sgi-ip27 [MIPS] IP27: Fix slice logic to work for arbitrary number of slices. 2007-10-29 19:35:35 +00:00
sgi-ip32 [MIPS] IP32: Fixes after interrupt renumbering. 2007-10-29 19:35:35 +00:00
sibyte [MIPS] time: Fix cut'n'paste bug in Sibyte clockevent driver. 2007-10-29 19:35:36 +00:00
sni [MIPS] SNI: Convert a20r timer to clockevent device. 2007-10-29 19:35:34 +00:00
tx4927 [MIPS] txx9tmr clockevent/clocksource driver 2007-10-29 19:35:35 +00:00
tx4938 [MIPS] txx9tmr clockevent/clocksource driver 2007-10-29 19:35:35 +00:00
vr41xx [MIPS] Kill duplicated setup_irq() for cp0 timer 2007-10-19 18:15:58 +01:00
defconfig [MIPS] Update a few defconfigs. 2007-08-27 02:16:55 +01:00
Kconfig [MIPS] txx9tmr clockevent/clocksource driver 2007-10-29 19:35:35 +00:00
Kconfig.debug [MIPS] Kbuild: Use the new cc-cross-prefix feature. 2007-10-22 22:09:01 +01:00
Makefile [MIPS] Kbuild: Use the new cc-cross-prefix feature. 2007-10-22 22:09:01 +01:00