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authorKamenee Arumugam <kamenee.arumugam@intel.com>2019-05-24 11:45:04 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-06-25 11:36:52 +0800
commit27300b189c4d1bf785b71894d451b16f0b65acd0 (patch)
parentaf538eeefc03955ef6912225acddad95395b2ab4 (diff)
IB/hfi1: Validate page aligned for a given virtual address
[ Upstream commit 97736f36dbebf2cda2799db3b54717ba5b388255 ] 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: 7e7a436ecb6e ("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> Signed-off-by: Sasha Levin <sashal@kernel.org>
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/user_exp_rcv.c b/drivers/infiniband/hw/hfi1/user_exp_rcv.c
index 6f6c14df383e..b38e3808836c 100644
--- a/drivers/infiniband/hw/hfi1/user_exp_rcv.c
+++ b/drivers/infiniband/hw/hfi1/user_exp_rcv.c
@@ -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;