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| author | David Hildenbrand <dahi@linux.vnet.ibm.com> | 2016-05-10 13:51:54 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-06-10 12:07:26 +0200 |
| commit | c427c42cd612719e8fb8b5891cc9761e7770024e (patch) | |
| tree | 425457f6b7c1d1cbaa97f5e2b894c1db34523db0 /arch/s390/mm/pgtable.c | |
| parent | KVM: s390: fixup I/O interrupt traces (diff) | |
| download | linux-c427c42cd612719e8fb8b5891cc9761e7770024e.tar.xz linux-c427c42cd612719e8fb8b5891cc9761e7770024e.zip | |
s390/mm: don't drop errors in get_guest_storage_key
Commit 1e133ab296f3 ("s390/mm: split arch/s390/mm/pgtable.c") changed
the return value of get_guest_storage_key to an unsigned char, resulting
in -EFAULT getting interpreted as a valid storage key.
Cc: stable@vger.kernel.org # 4.6+
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/mm/pgtable.c')
| -rw-r--r-- | arch/s390/mm/pgtable.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index 4324b87f9398..2a23ca96f9c2 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -543,7 +543,7 @@ int set_guest_storage_key(struct mm_struct *mm, unsigned long addr, } EXPORT_SYMBOL(set_guest_storage_key); -unsigned char get_guest_storage_key(struct mm_struct *mm, unsigned long addr) +unsigned long get_guest_storage_key(struct mm_struct *mm, unsigned long addr) { unsigned char key; spinlock_t *ptl; |