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David S. Miller 05c5e7698b sparc64: Fix race in signal instruction flushing. 
If another cpu does a very wide munmap() on the signal frame area,
it can tear down the page table hierarchy from underneath us.

Borrow an idea from the 64-bit fault path's get_user_insn(), and
disable cross call interrupts during the page table traversal
to lock them in place while we operate.

Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-20 23:24:52 -07:00
..
alpha defconfig reduction 2010-08-14 22:26:53 +02:00
arm Merge git://git.infradead.org/mtd-2.6 2010-08-15 17:32:47 -07:00
avr32 defconfig reduction 2010-08-14 22:26:53 +02:00
blackfin Merge git://git.infradead.org/mtd-2.6 2010-08-15 17:32:47 -07:00
cris defconfig reduction 2010-08-14 22:26:53 +02:00
frv defconfig reduction 2010-08-14 22:26:53 +02:00
h8300 defconfig reduction 2010-08-14 22:26:53 +02:00
ia64 defconfig reduction 2010-08-14 22:26:53 +02:00
m32r defconfig reduction 2010-08-14 22:26:53 +02:00
m68k defconfig reduction 2010-08-14 22:26:53 +02:00
m68knommu defconfig reduction 2010-08-14 22:26:53 +02:00
microblaze defconfig reduction 2010-08-14 22:26:53 +02:00
mips Merge git://git.infradead.org/mtd-2.6 2010-08-15 17:32:47 -07:00
mn10300 defconfig reduction 2010-08-14 22:26:53 +02:00
parisc defconfig reduction 2010-08-14 22:26:53 +02:00
powerpc archs: replace unifdef-y with header-y 2010-08-14 22:26:51 +02:00
s390 defconfig reduction 2010-08-14 22:26:53 +02:00
score defconfig reduction 2010-08-14 22:26:53 +02:00
sh defconfig reduction 2010-08-14 22:26:53 +02:00
sparc sparc64: Fix race in signal instruction flushing. 2010-09-20 23:24:52 -07:00
tile Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile 2010-08-15 17:31:43 -07:00
um Mark arguments to certain syscalls as being const 2010-08-13 16:53:13 -07:00
x86 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2010-08-15 17:37:07 -07:00
xtensa Mark arguments to certain syscalls as being const 2010-08-13 16:53:13 -07:00
.gitignore
Kconfig Merge branch 'perf/nmi' into perf/core 2010-08-05 08:45:05 +02:00