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android_kernel_oneplus_msm8998/arch/powerpc/mm
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Frederic Barrat c346241e75 powerpc/mm: Prevent unlikely crash in copro_calculate_slb() 
commit d2cf909cda5f8c5609cb7ed6cda816c3e15528c7 upstream.

If a cxl adapter faults on an invalid address for a kernel context, we
may enter copro_calculate_slb() with a NULL mm pointer (kernel
context) and an effective address which looks like a user
address. Which will cause a crash when dereferencing mm. It is clearly
an AFU bug, but there's no reason to crash either. So return an error,
so that cxl can ack the interrupt with an address error.

Fixes: 73d16a6e0e ("powerpc/cell: Move data segment faulting code out of cell platform")
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-10-28 03:01:35 -04:00
..
40x_mmu.c
44x_mmu.c
copro_fault.c powerpc/mm: Prevent unlikely crash in copro_calculate_slb() 2016-10-28 03:01:35 -04:00
dma-noncoherent.c powerpc: Fix compile errors with STRICT_MM_TYPECHECKS enabled 2015-04-10 20:02:47 +10:00
fault.c powerpc: Add plain English description for alignment exception oopses 2015-07-06 20:24:35 +10:00
fsl_booke_mmu.c powerpc/fsl-booke-64: Don't limit ppc64_rma_size to one TLB entry 2015-10-27 18:13:22 -05:00
hash_low_32.S
hash_low_64.S powerpc/mm: Drop CONFIG_PPC_HAS_HASH_64K 2015-08-18 19:32:10 +10:00
hash_native_64.c powerpc: Fix checkstop in native_hpte_clear() with lockdep 2015-10-09 08:01:38 +11:00
hash_utils_64.c powerpc/mm: Differentiate between hugetlb and THP during page walk 2015-10-12 15:30:09 +11:00
highmem.c sched/preempt, mm/kmap: Explicitly disable/enable preemption in kmap_atomic_* 2015-05-19 08:39:14 +02:00
hugepage-hash64.c powerpc/mm: Recompute hash value after a failed update 2015-09-16 22:06:03 +10:00
hugetlbpage-book3e.c
hugetlbpage-hash64.c
hugetlbpage.c powerpc/mm: Fixup preempt underflow with huge pages 2016-04-20 15:41:53 +09:00
icswx.c
icswx.h
icswx_pid.c
init_32.c
init_64.c powerpc/mm: Free string after creating kmem cache 2015-03-26 15:23:17 +11:00
Makefile powerpc/mmu: Add userspace-to-physical addresses translation cache 2015-06-11 15:16:54 +10:00
mem.c libnvdimm for 4.3: 2015-09-08 14:35:59 -07:00
mmap.c mm: expose arch_mmap_rnd when available 2015-04-14 16:49:05 -07:00
mmu_context_hash32.c
mmu_context_hash64.c powerpc/mmu: Add userspace-to-physical addresses translation cache 2015-06-11 15:16:54 +10:00
mmu_context_iommu.c powerpc/mmu: Add userspace-to-physical addresses translation cache 2015-06-11 15:16:54 +10:00
mmu_context_nohash.c
mmu_decl.h powerpc/fsl-booke-64: Don't limit ppc64_rma_size to one TLB entry 2015-10-27 18:13:22 -05:00
numa.c powerpc updates for 4.4 2015-11-05 23:38:43 -08:00
pgtable.c
pgtable_32.c powerpc: Replace mem_init_done with slab_is_available() 2015-04-10 20:02:48 +10:00
pgtable_64.c powerpc/booke64: Move mb() to __set_pte_at() with kernel-addr test 2015-08-07 23:00:01 -05:00
ppc_mmu_32.c powerpc/mm: Change setbat() to take a pgprot_t rather than flags 2015-04-07 17:15:13 +10:00
slb.c powerpc/slb: Use a local to avoid multiple calls to get_slb_shadow() 2015-10-01 16:52:01 +10:00
slb_low.S powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET 2016-09-24 10:07:35 +02:00
slice.c
subpage-prot.c
tlb_hash32.c
tlb_hash64.c powerpc/mm: Differentiate between hugetlb and THP during page walk 2015-10-12 15:30:09 +11:00
tlb_low_64e.S powerpc/e6500: hw tablewalk: make sure we invalidate and write to the same tlb entry 2015-10-27 18:14:40 -05:00
tlb_nohash.c powerpc/fsl-booke-64: Don't limit ppc64_rma_size to one TLB entry 2015-10-27 18:13:22 -05:00
tlb_nohash_low.S powerpc/85xx: Load all early TLB entries at once 2015-10-22 22:50:46 -05:00
vphn.c powerpc/vphn: parsing code rewrite 2015-03-18 10:48:59 +11:00
vphn.h powerpc/vphn: parsing code rewrite 2015-03-18 10:48:59 +11:00