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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-22 21:50:05 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-22 21:50:05 +0300 |
| commit | 7c034dfd58bbc056280262887acf5b7a98944d0a (patch) | |
| tree | 49dc3b77590f9929069db17922c823bb679c1456 /drivers/infiniband/core/umem.c | |
| parent | 1204c464458e9837320a326a9fce550e3c5ef5de (diff) | |
| parent | c1c2fef6cfb04cf30a56bb37cff40d3498d7edbf (diff) | |
| download | linux-7c034dfd58bbc056280262887acf5b7a98944d0a.tar.xz | |
Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
Pull InfiniBand/RDMA updates from Roland Dreier:
- IPoIB fixes from Doug Ledford and Erez Shitrit
- iSER updates from Sagi Grimberg
- mlx4 GUID handling changes from Yishai Hadas
- other misc fixes
* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (51 commits)
mlx5: wrong page mask if CONFIG_ARCH_DMA_ADDR_T_64BIT enabled for 32Bit architectures
IB/iser: Rewrite bounce buffer code path
IB/iser: Bump version to 1.6
IB/iser: Remove code duplication for a single DMA entry
IB/iser: Pass struct iser_mem_reg to iser_fast_reg_mr and iser_reg_sig_mr
IB/iser: Modify struct iser_mem_reg members
IB/iser: Make fastreg pool cache friendly
IB/iser: Move PI context alloc/free to routines
IB/iser: Move fastreg descriptor pool get/put to helper functions
IB/iser: Merge build page-vec into register page-vec
IB/iser: Get rid of struct iser_rdma_regd
IB/iser: Remove redundant assignments in iser_reg_page_vec
IB/iser: Move memory reg/dereg routines to iser_memory.c
IB/iser: Don't pass ib_device to fall_to_bounce_buff routine
IB/iser: Remove a redundant struct iser_data_buf
IB/iser: Remove redundant cmd_data_len calculation
IB/iser: Fix wrong calculation of protection buffer length
IB/iser: Handle fastreg/local_inv completion errors
IB/iser: Fix unload during ep_poll wrong dereference
ib_srpt: convert printk's to pr_* functions
...
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 8c014b5dab4c..38acb3cfc545 100644 --- a/drivers/infiniband/core/umem.c +++ b/drivers/infiniband/core/umem.c @@ -99,12 +99,15 @@ 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()) |