From: Jacob Moroni <jmoroni@google.com>
To: tatyana.e.nikolova@intel.com, jgg@ziepe.ca, leon@kernel.org
Cc: linux-rdma@vger.kernel.org, Jacob Moroni <jmoroni@google.com>
Subject: [PATCH] RDMA/irdma: Check for null udata during reg_user_mr
Date: Tue, 30 Jun 2026 15:47:19 +0000 [thread overview]
Message-ID: <20260630154720.1647530-1-jmoroni@google.com> (raw)
The irdma driver requires udata for reg_user_mr. Previously,
it was assuming that it was always non-null, but it can actually
be null if the user intentionally triggers the UVERBS_METHOD_REG_MR
ioctl.
Signed-off-by: Jacob Moroni <jmoroni@google.com>
---
drivers/infiniband/hw/irdma/verbs.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c
index cb54c7c8fcd..3bcac68a612 100644
--- a/drivers/infiniband/hw/irdma/verbs.c
+++ b/drivers/infiniband/hw/irdma/verbs.c
@@ -3519,6 +3519,9 @@ static struct ib_mr *irdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 len,
if (dmah)
return ERR_PTR(-EOPNOTSUPP);
+ if (!udata)
+ return ERR_PTR(-EINVAL);
+
if (len > iwdev->rf->sc_dev.hw_attrs.max_mr_size)
return ERR_PTR(-EINVAL);
--
2.55.0.rc0.799.gd6f94ed593-goog
reply other threads:[~2026-06-30 15:47 UTC|newest]
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