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IB/hfi1: Validate page aligned for a given virtual address 

User applications can register memory regions for TID buffers that are not
aligned on page boundaries. Hfi1 is expected to pin those pages in memory
and cache the pages with mmu_rb. The rb tree will fail to insert pages
that are not aligned correctly.

Validate whether a given virtual address is page aligned before pinning.

Fixes: 7e7a436ecb ("staging/hfi1: Add TID entry program function body")
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Kamenee Arumugam <kamenee.arumugam@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Kamenee Arumugam 2019-05-24 11:45:04 -04:00 committed by Jason Gunthorpe
parent 35164f5259
commit 97736f36db
1 changed files with 3 additions and 0 deletions
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3
drivers/infiniband/hw/hfi1/user_exp_rcv.c
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@ -324,6 +324,9 @@ int hfi1_user_exp_rcv_setup(struct hfi1_filedata *fd,
u32 *tidlist = NULL;
struct tid_user_buf *tidbuf;
if (!PAGE_ALIGNED(tinfo->vaddr))
return -EINVAL;
tidbuf = kzalloc(sizeof(*tidbuf), GFP_KERNEL);
if (!tidbuf)
return -ENOMEM;