linux/arch/s390
Martin Schwidefsky 8d7f6690ce s390: fix kernel crash due to linkage stack instructions
The kernel currently crashes with a low-address-protection exception
if a user space process executes an instruction that tries to use the
linkage stack. Set the base-ASTE origin and the subspace-ASTE origin
of the dispatchable-unit-control-table to point to a dummy ASTE.
Set up control register 15 to point to an empty linkage stack with no
room left.

A user space process with a linkage stack instruction will still crash
but with a different exception which is correctly translated to a
segmentation fault instead of a kernel oops.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2014-02-05 11:00:50 +01:00
..
appldata s390/appldata: restore missing init_virt_timer() 2014-01-29 09:07:51 +01:00
boot s390/boot: Install bzImage as default kernel image 2013-11-15 14:08:36 +01:00
configs s390: add a couple of useful defconfigs 2013-10-24 17:17:14 +02:00
crypto crypto: arch - use crypto_memneq instead of memcmp 2013-12-20 20:06:24 +08:00
hypfs s390/hypfs: add interface for diagnose 0x304 2014-01-24 09:40:59 +01:00
include Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2014-01-28 09:02:24 -08:00
kernel s390: fix kernel crash due to linkage stack instructions 2014-02-05 11:00:50 +01:00
kvm First round of KVM updates for 3.14; PPC parts will come next week. 2014-01-22 21:40:43 -08:00
lib s390/uaccess: remove dead extern declarations, make functions static 2014-01-22 14:02:17 +01:00
math-emu s390: fix save and restore of the floating-point-control register 2013-10-24 17:17:11 +02:00
mm s390/dump: Fix dump memory detection 2014-02-04 15:39:51 +01:00
net s390/bpf,jit: fix 32 bit divisions, use unsigned divide instructions 2014-01-17 18:54:49 -08:00
oprofile s390/cpum_sf: Add raw data sampling to support the diagnostic-sampling function 2013-12-16 14:38:00 +01:00
pci PCI changes for the v3.14 merge window: 2014-01-22 16:39:28 -08:00
defconfig Update default configuration 2013-10-24 17:17:15 +02:00
Kbuild s390/pci: base support 2012-11-30 15:40:45 +01:00
Kconfig Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2014-01-28 09:02:24 -08:00
Kconfig.debug Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS 2013-04-30 17:04:09 -07:00
Makefile s390: allow to set gcc -mtune flag 2013-10-31 09:54:01 +01:00