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linux/arch/sparc
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Dave Aldridge 22d6b013ff sparc64: fix fault handling in NGbzero.S and GENbzero.S 
commit 3c7f622120 upstream.

When any of the functions contained in NGbzero.S and GENbzero.S
vector through *bzero_from_clear_user, we may end up taking a
fault when executing one of the store alternate address space
instructions. If this happens, the exception handler does not
restore the %asi register.

This commit fixes the issue by introducing a new exception
handler that ensures the %asi register is restored when
a fault is handled.

Orabug: 25577560

Signed-off-by: Dave Aldridge <david.j.aldridge@oracle.com>
Reviewed-by: Rob Gardner <rob.gardner@oracle.com>
Reviewed-by: Babu Moger <babu.moger@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2017-05-14 14:00:20 +02:00
..
boot sparc: Add "install" target 2014-08-04 20:45:59 -07:00
configs sparc/defconfigs: Remove CONFIG_IPV6_PRIVACY 2016-04-21 16:43:44 -04:00
crypto crypto: sparc - initialize blkcipher.ivsize 2015-10-08 21:36:48 +08:00
include sparc64: Fix kernel panic due to erroneous #ifdef surrounding pmd_write() 2017-05-03 08:36:34 -07:00
kernel sparc64: fix fault handling in NGbzero.S and GENbzero.S 2017-05-14 14:00:20 +02:00
lib sparc64: fix fault handling in NGbzero.S and GENbzero.S 2017-05-14 14:00:20 +02:00
math-emu arch/sparc/math-emu/math_32.c: drop stray break operator 2014-08-04 20:29:06 -07:00
mm sparc64: kern_addr_valid regression 2017-05-03 08:36:34 -07:00
net sparc: Fix misspellings in comments. 2016-03-20 21:28:58 -07:00
oprofile sparc: using HZ needs an include of linux/param.h 2009-10-05 00:46:08 -07:00
power Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc 2014-10-11 20:36:34 -04:00
prom sparc: fixing ident and beautifying code 2016-10-06 01:46:40 -04:00
Kbuild sparc64: Add SHA1 driver making use of the 'sha1' instruction. 2012-08-20 15:08:49 -07:00
Kconfig config: Adding the new config parameter CONFIG_PROVE_LOCKING_SMALL for sparc 2016-11-18 11:33:19 -08:00
Kconfig.debug lib: consolidate DEBUG_STACK_USAGE option 2011-05-25 08:39:54 -07:00
Makefile sparc32: Add -Wa,-Av8 to KBUILD_CFLAGS. 2016-03-01 00:24:04 -05:00