Heiko Carstens b03b467944 s390/uaccess: test if current->mm is set before walking page tables ... If get_fs() == USER_DS we better test if current->mm is not zero before walking page tables. The page table walk code would try to lock mm->page_table_lock, however if mm is zero this might crash. Now it is arguably incorrect trying to access userspace if current->mm is zero, however we have seen that and s390 would be the only architecture which would crash in such a case. So we better make the page table walk code a bit more robust and report always a fault instead. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2014-01-22 14:02:16 +01:00
..
delay.c	s390/time: correct use of store clock fast	2013-10-22 09:16:40 +02:00
div64.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
find.c	s390/bitops: rename find_first_bit_left() to find_first_bit_inv()	2013-10-24 17:16:56 +02:00
Makefile	s390/uaccess: always run the kernel in home space	2013-10-24 17:16:57 +02:00
mem32.S	s390/string: provide asm lib functions for memcpy and memcmp	2012-09-26 15:44:50 +02:00
mem64.S	s390/string: provide asm lib functions for memcpy and memcmp	2012-09-26 15:44:50 +02:00
qrnnd.S	[S390] fix s390 assembler code alignments	2011-07-24 10:48:21 +02:00
spinlock.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
string.c	s390/string: provide asm lib functions for memcpy and memcmp	2012-09-26 15:44:50 +02:00
uaccess_mvcos.c	s390/uaccess: always run the kernel in home space	2013-10-24 17:16:57 +02:00
uaccess_pt.c	s390/uaccess: test if current->mm is set before walking page tables	2014-01-22 14:02:16 +01:00
uaccess.h	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
ucmpdi2.c	[S390] add __ucmpdi2() helper function	2009-07-07 16:37:53 +02:00