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author | 2016-11-15 20:36:06 +0530 | |
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committer | 2016-11-22 11:57:08 +1100 | |
commit | 64168f4296fa507ba059307984cddcf957a81d5f (patch) | |
tree | 5db9b003260ed01bb90088419233da28afd3da1a | |
parent | powerpc/eeh: Refactor EEH PE reset functions (diff) | |
download | linux-64168f4296fa507ba059307984cddcf957a81d5f.tar.gz linux-64168f4296fa507ba059307984cddcf957a81d5f.tar.bz2 linux-64168f4296fa507ba059307984cddcf957a81d5f.zip |
powerpc/mm/coproc: Handle bad address on coproc slb fault
VSID 0 is bad address. Don't create slb entries on coproc fault for
bad address
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Reviewed-by: Balbir Singh <bsingharora@gmail.com>
Reviewed-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
-rw-r--r-- | arch/powerpc/mm/copro_fault.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/mm/copro_fault.c b/arch/powerpc/mm/copro_fault.c index 362954f98029..aaa7ec6788b9 100644 --- a/arch/powerpc/mm/copro_fault.c +++ b/arch/powerpc/mm/copro_fault.c @@ -134,6 +134,9 @@ int copro_calculate_slb(struct mm_struct *mm, u64 ea, struct copro_slb *slb) pr_debug("%s: invalid region access at %016llx\n", __func__, ea); return 1; } + /* Bad address */ + if (!vsid) + return 1; vsid = (vsid << slb_vsid_shift(ssize)) | vsidkey; |