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
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cmm.c	mm: remove unneeded includes of <asm/pgalloc.h>	2020-08-07 11:33:26 -07:00
dump_pagetables.c	s390/mm,ptdump: sort markers	2020-09-16 14:08:47 +02:00
extmem.c	s390/extmem: remove stale -ENOSPC comment and handling	2020-07-03 10:49:16 +02:00
fault.c	s390: mm: Fix secure storage access exception handling	2021-07-14 16:55:43 +02:00
gmap.c	KVM: s390: pv: Mark mm as protected after the set secure parameters and improve cleanup	2020-11-11 09:31:48 +01:00
hugetlbpage.c	s390/mm: fix huge pte soft dirty copying	2020-07-09 15:18:23 +02:00
init.c	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
kasan_init.c	s390/kasan: support protvirt with 4-level paging	2020-09-16 14:08:48 +02:00
maccess.c	s390/maccess: add no DAT mode to kernel_write	2020-06-29 16:26:36 +02:00
Makefile	s390: add ARCH_HAS_DEBUG_WX support	2020-09-14 11:38:35 +02:00
mmap.c	mm: remove unneeded includes of <asm/pgalloc.h>	2020-08-07 11:33:26 -07:00
page-states.c	arch, mm: replace for_each_memblock() with for_each_mem_pfn_range()	2020-10-13 18:38:35 -07:00
pageattr.c	s390/mm,ptdump: hold cpa mutex while walking for kernel page table dump	2020-09-14 11:38:34 +02:00
pgalloc.c	mmap locking API: convert mmap_sem comments	2020-06-09 09:39:14 -07:00
pgtable.c	s390/pci: Implement ioremap_wc/prot() with MIO	2020-09-14 10:30:07 +02:00
vmem.c	arch, drivers: replace for_each_membock() with for_each_mem_range()	2020-10-13 18:38:35 -07:00