Detected this by building the IB core with W=1. See also patch
"IB core: Fix ib_sg_to_pages()" (commit 8f5ba10ed40a).
Signed-off-by: Bart Van Assche <bart.vanass...@sandisk.com>
Cc: Sagi Grimberg <sa...@mellanox.com>
Cc: Christoph Hellwig <h...@lst.de>
---
drivers/infiniband/core/verbs.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 545906d..c90ed29 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -1530,7 +1530,7 @@ int ib_sg_to_pages(struct ib_mr *mr,
int (*set_page)(struct ib_mr *, u64))
{
struct scatterlist *sg;
- u64 last_end_dma_addr = 0, last_page_addr = 0;
+ u64 last_end_dma_addr = 0;
unsigned int last_page_off = 0;
u64 page_mask = ~((u64)mr->page_size - 1);
int i, ret;
@@ -1572,7 +1572,6 @@ next_page:
mr->length += dma_len;
last_end_dma_addr = end_dma_addr;
- last_page_addr = end_dma_addr & page_mask;
last_page_off = end_dma_addr & ~page_mask;
}
--
2.1.4
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