Janosch Frank 36ae903607 s390: mm: Fix secure storage access exception handling ... commit 85b18d7b5e7ffefb2f076186511d39c4990aa005 upstream. Turns out that the bit 61 in the TEID is not always 1 and if that's the case the address space ID and the address are unpredictable. Without an address and its address space ID we can't export memory and hence we can only send a SIGSEGV to the process or panic the kernel depending on who caused the exception. Unfortunately bit 61 is only reliable if we have the "misc" UV feature bit. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Fixes: 084ea4d611 ("s390/mm: add (non)secure page access exceptions handlers") Cc: stable@vger.kernel.org Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-07-14 16:55:43 +02:00
..
cmm.c
dump_pagetables.c
extmem.c
fault.c
gmap.c
hugetlbpage.c
init.c
kasan_init.c
maccess.c
Makefile
mmap.c
page-states.c
pageattr.c
pgalloc.c
pgtable.c
vmem.c