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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-16 18:26:00 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-16 18:26:00 -0800 |
| commit | 1e619a1bf9ac878e6a984e4e279ccf712a65bc23 (patch) | |
| tree | 1d5cfb16f88e36dca2f57386dd4a585a63f15287 /arch/s390/mm/gup.c | |
| parent | 68a81291ff6650f3ff409ebfc58ef97dfe85a2e4 (diff) | |
| parent | f4a75d2eb7b1e2206094b901be09adb31ba63681 (diff) | |
Merge 3.7-rc6 into tty-next
Diffstat (limited to 'arch/s390/mm/gup.c')
| -rw-r--r-- | arch/s390/mm/gup.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/s390/mm/gup.c b/arch/s390/mm/gup.c index 8b8285310b5a..1f5315d1215c 100644 --- a/arch/s390/mm/gup.c +++ b/arch/s390/mm/gup.c @@ -180,8 +180,7 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write, addr = start; len = (unsigned long) nr_pages << PAGE_SHIFT; end = start + len; - if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ, - (void __user *)start, len))) + if ((end < start) || (end > TASK_SIZE)) return 0; local_irq_save(flags); @@ -229,7 +228,7 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, addr = start; len = (unsigned long) nr_pages << PAGE_SHIFT; end = start + len; - if (end < start) + if ((end < start) || (end > TASK_SIZE)) goto slow_irqon; /* |