This is a note to let you know that I've just added the patch titled
RDMA/irdma: Ensure iWarp QP queue memory is OS paged aligned
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rdma-irdma-ensure-iwarp-qp-queue-memory-is-os-paged-aligned.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0a5ec366de7e94192669ba08de6ed336607fd282 Mon Sep 17 00:00:00 2001
From: Mike Marciniszyn <mike.marciniszyn@xxxxxxxxx>
Date: Wed, 29 Nov 2023 14:21:42 -0600
Subject: RDMA/irdma: Ensure iWarp QP queue memory is OS paged aligned
From: Mike Marciniszyn <mike.marciniszyn@xxxxxxxxx>
commit 0a5ec366de7e94192669ba08de6ed336607fd282 upstream.
The SQ is shared for between kernel and used by storing the kernel page
pointer and passing that to a kmap_atomic().
This then requires that the alignment is PAGE_SIZE aligned.
Fix by adding an iWarp specific alignment check.
Fixes: e965ef0e7b2c ("RDMA/irdma: Split QP handler into irdma_reg_user_mr_type_qp")
Link: https://lore.kernel.org/r/20231129202143.1434-3-shiraz.saleem@xxxxxxxxx
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@xxxxxxxxx>
Signed-off-by: Shiraz Saleem <shiraz.saleem@xxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/hw/irdma/verbs.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/infiniband/hw/irdma/verbs.c
+++ b/drivers/infiniband/hw/irdma/verbs.c
@@ -2797,6 +2797,11 @@ static struct ib_mr *irdma_reg_user_mr(s
switch (req.reg_type) {
case IRDMA_MEMREG_TYPE_QP:
+ /* iWarp: Catch page not starting on OS page boundary */
+ if (!rdma_protocol_roce(&iwdev->ibdev, 1) &&
+ ib_umem_offset(iwmr->region))
+ return -EINVAL;
+
total = req.sq_pages + req.rq_pages + shadow_pgcnt;
if (total > iwmr->page_cnt) {
err = -EINVAL;
Patches currently in stable-queue which might be from mike.marciniszyn@xxxxxxxxx are
queue-5.15/rdma-irdma-fix-support-for-64k-pages.patch
queue-5.15/rdma-irdma-ensure-iwarp-qp-queue-memory-is-os-paged-aligned.patch
