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OpenCloudOS-Kernel/arch/s390/kernel
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Heiko Carstens e858712185 s390/compat: fix mmap compat system calls 
The native 31 bit and the compat behaviour for the mmap system calls differ:

In native 31 bit mode the passed in address for the mmap system call will be
unmodified passed to sys_mmap_pgoff().
In compat mode however the passed in address will be modified with
compat_ptr() which masks out the most significant bit.

The result is that in native 31 bit mode each mmap request (with MAP_FIXED)
will fail where the most significat bit is set, while in compat mode it
may succeed.

This odd behaviour was introduced with d3815898 "[S390] mmap: add missing
compat_ptr conversion to both mmap compat syscalls".

To restore a consistent behaviour accross native and compat mode this
patch functionally reverts the above mentioned commit.

Cc: stable@vger.kernel.org
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 		2012-08-08 07:32:57 -07:00
..
vdso32 s390: add various .gitignore files. 2012-05-16 14:42:41 +02:00
vdso64 s390: add various .gitignore files. 2012-05-16 14:42:41 +02:00
.gitignore s390: add various .gitignore files. 2012-05-16 14:42:41 +02:00
Makefile s390: Use generic init_task 2012-05-05 13:00:25 +02:00
asm-offsets.c s390/vtimer: rework virtual timer interface 2012-07-20 11:15:08 +02:00
audit.c [S390] Get rid of a bunch of sparse warnings again. 2007-10-12 16:13:06 +02:00
audit.h [S390] Get rid of a bunch of sparse warnings again. 2007-10-12 16:13:06 +02:00
base.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
bitmap.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
compat_audit.c [S390] Get rid of a bunch of sparse warnings again. 2007-10-12 16:13:06 +02:00
compat_exec_domain.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
compat_linux.c s390/compat: fix mmap compat system calls 2012-08-08 07:32:57 -07:00
compat_linux.h Mark arguments to certain syscalls as being const 2010-08-13 16:53:13 -07:00
compat_ptrace.h [S390] ptrace cleanup 2011-01-05 12:47:31 +01:00
compat_signal.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
compat_wrapper.S s390/compat: fix compat wrappers for process_vm system calls 2012-08-08 07:32:57 -07:00
cpcmd.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
crash.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
crash_dump.c [S390] kernel: Add OS info memory interface 2012-03-11 11:59:29 -04:00
debug.c s390/debug: remove module_exit function / move EXPORT_SYMBOLs 2012-07-26 10:07:25 +02:00
diag.c [S390] replace diag10() with diag10_range() function 2011-05-10 17:13:43 +02:00
dis.c s390: make use of user_mode() macro where possible 2012-07-30 11:03:12 +02:00
early.c s390/exceptions: sort exception table at build time 2012-07-26 10:07:25 +02:00
ebcdic.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
entry.S s390/vtimer: rework virtual timer interface 2012-07-20 11:15:08 +02:00
entry.h s390/vtimer: rework virtual timer interface 2012-07-20 11:15:08 +02:00
entry64.S s390/vtimer: rework virtual timer interface 2012-07-20 11:15:08 +02:00
ftrace.c [S390] cleanup ftrace backend functions 2011-01-05 12:47:31 +01:00
head.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
head31.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
head64.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
head_kdump.S s390/sigp: use sigp order code defines in assembly code 2012-06-05 13:23:36 +02:00
ipl.c s390/ipl: Use diagnose 8 command separation 2012-07-26 10:07:26 +02:00
irq.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
jump_label.c s390/jump-label: add arch_jump_label_transform_static() 2011-10-25 11:54:37 -07:00
kprobes.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
lgr.c s390/lgr: Add init check to lgr_info_log() 2012-07-20 11:15:01 +02:00
machine_kexec.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
mcount.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
mcount64.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
mem_detect.c [S390] Rework create_mem_hole() function 2011-12-27 11:27:09 +01:00
module.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
nmi.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
os_info.c s390/smp: make absolute lowcore / cpu restart parameter accesses more robust 2012-06-14 09:09:02 +02:00
perf_cpum_cf.c s390/irq: split irq stats for cpu-measurement alert facilities 2012-05-23 17:06:52 +02:00
perf_event.c [S390] Fix build errors (fallout from system.h disintegration) 2012-03-30 09:41:12 +02:00
process.c s390/vtimer: rework virtual timer interface 2012-07-20 11:15:08 +02:00
processor.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
ptrace.c s390/seccomp: add support for system call filtering using BPF 2012-08-08 07:32:56 -07:00
reipl.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
reipl64.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
relocate_kernel.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
relocate_kernel64.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
s390_ksyms.c [S390] move sie code to entry.S 2011-07-24 10:48:21 +02:00
sclp.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
setup.c s390/mm: rename user_mode variable to addressing_mode 2012-07-30 11:03:11 +02:00
signal.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
smp.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2012-07-24 09:49:09 -07:00
stacktrace.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
suspend.c Disintegrate asm/system.h for S390 2012-03-28 18:30:02 +01:00
swsusp_asm64.S s390/sigp: use sigp order code defines in assembly code 2012-06-05 13:23:36 +02:00
sys_s390.c s390: do not clobber personality flags in sys_32_personality() 2012-08-08 07:32:56 -07:00
syscalls.S [S390] wire up process_vm syscalls 2011-11-14 11:19:08 +01:00
sysinfo.c s390/cpu: remove cpu "capabilities" sysfs attribute 2012-05-30 09:07:30 +02:00
time.c s390/vtimer: rework virtual timer interface 2012-07-20 11:15:08 +02:00
topology.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
traps.c s390: make use of user_mode() macro where possible 2012-07-30 11:03:12 +02:00
vdso.c s390/mm: rename user_mode variable to addressing_mode 2012-07-30 11:03:11 +02:00
vmlinux.lds.S s390/linker script: use RO_DATA_SECTION 2012-07-26 10:07:25 +02:00
vtime.c s390/vtimer: rework virtual timer interface 2012-07-20 11:15:08 +02:00