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linux/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
vdso64
.gitignore
asm-offsets.c s390/vtimer: rework virtual timer interface 2012-07-20 11:15:08 +02:00
audit.c
audit.h
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
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
compat_ptrace.h
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_dump.c
crash.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
debug.c s390/debug: remove module_exit function / move EXPORT_SYMBOLs 2012-07-26 10:07:25 +02:00
diag.c
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
entry64.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
entry.S s390/vtimer: rework virtual timer interface 2012-07-20 11:15:08 +02:00
ftrace.c
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
head.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +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
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
Makefile
mcount64.S 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
mem_detect.c
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
perf_event.c
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
reipl64.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
reipl.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
relocate_kernel.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
s390_ksyms.c
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
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
sysinfo.c
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