Linus Torvalds de9e478b9d x86: fix SMAP in 32-bit environments ... In commit 11f1a4b975 ("x86: reorganize SMAP handling in user space accesses") I changed how the stac/clac instructions were generated around the user space accesses, which then made it possible to do batched accesses efficiently for user string copies etc. However, in doing so, I completely spaced out, and didn't even think about the 32-bit case. And nobody really even seemed to notice, because SMAP doesn't even exist until modern Skylake processors, and you'd have to be crazy to run 32-bit kernels on a modern CPU. Which brings us to Andy Lutomirski. He actually tested the 32-bit kernel on new hardware, and noticed that it doesn't work. My bad. The trivial fix is to add the required uaccess begin/end markers around the raw accesses in <asm/uaccess_32.h>. I feel a bit bad about this patch, just because that header file really should be cleaned up to avoid all the duplicated code in it, and this commit just expands on the problem. But this just fixes the bug without any bigger cleanup surgery. Reported-and-tested-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2016-02-23 16:25:20 -08:00
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alpha
arc	ARC fixes for 4.5	2016-02-13 08:18:21 -08:00
arm	Xen bug fixes for 4.5-rc5	2016-02-22 13:57:01 -08:00
arm64	arm64 fixes:	2016-02-19 08:40:05 -08:00
avr32
blackfin
c6x
cris	Merge branch 'akpm' (patches from Andrew)	2016-01-21 12:32:08 -08:00
frv
h8300	Merge branch 'akpm' (patches from Andrew)	2016-01-21 12:32:08 -08:00
hexagon
ia64	[IA64] Enable copy_file_range syscall for ia64	2016-01-22 14:20:01 -08:00
m32r	m32r: fix build failure due to SMP and MMU	2016-02-05 18:10:40 -08:00
m68k	m68k/defconfig: Update defconfigs for v4.5-rc1	2016-02-01 10:35:38 +01:00
metag
microblaze
mips	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2016-02-14 10:49:01 -08:00
mn10300
nios2
openrisc
parisc
powerpc	powerpc fixes for 4.5 #2	2016-02-20 09:22:11 -08:00
s390	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2016-02-19 08:33:12 -08:00
score
sh	sh: fix smp_store_mb for !SMP	2016-01-26 10:18:29 +02:00
sparc
tile
um	um: asm/page.h: remove the pte_high member from struct pte_t	2016-02-05 18:10:40 -08:00
unicore32
x86	x86: fix SMAP in 32-bit environments	2016-02-23 16:25:20 -08:00
xtensa
.gitignore
Kconfig