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| author | Kevin Hilman <khilman@linaro.org> | 2015-06-16 15:29:36 -0700 |
|---|---|---|
| committer | Kevin Hilman <khilman@linaro.org> | 2015-06-16 15:29:36 -0700 |
| commit | b0477f5f8ec85bf8a82f6aa6eee308d72c418032 (patch) | |
| tree | d520be10a261f418dbf4539f1d2b5d48d74ba0d3 /drivers/infiniband/core/umem.c | |
| parent | 13a29d9ad242f0bf3b31afe812c81558d54892de (diff) | |
| parent | 9a004a75a3305fbd3c253f38cd0788164c4fbd56 (diff) | |
Merge branch 'linux-linaro-lsk-v3.18' into linux-linaro-lsk-v3.18-androidlsk-v3.18-15.07-android
Diffstat (limited to 'drivers/infiniband/core/umem.c')
| -rw-r--r-- | drivers/infiniband/core/umem.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c index dfa4286f98a4..49df6af0f03f 100644 --- a/drivers/infiniband/core/umem.c +++ b/drivers/infiniband/core/umem.c @@ -94,12 +94,15 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr, if (dmasync) dma_set_attr(DMA_ATTR_WRITE_BARRIER, &attrs); + if (!size) + return ERR_PTR(-EINVAL); + /* * If the combination of the addr and size requested for this memory * region causes an integer overflow, return error. */ - if ((PAGE_ALIGN(addr + size) <= size) || - (PAGE_ALIGN(addr + size) <= addr)) + if (((addr + size) < addr) || + PAGE_ALIGN(addr + size) < (addr + size)) return ERR_PTR(-EINVAL); if (!can_do_mlock()) |