From: Colin King <colin.king@canonical.com>
To: Selvin Xavier <selvin.xavier@broadcom.com>,
Devesh Sharma <devesh.sharma@broadcom.com>,
Naresh Kumar PBS <nareshkumar.pbs@broadcom.com>,
Doug Ledford <dledford@redhat.com>,
Jason Gunthorpe <jgg@ziepe.ca>, Leon Romanovsky <leon@kernel.org>,
linux-rdma@vger.kernel.org
Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH][next] RDMA/bnxt_re: Fix uninitialized struct bit field rsvd1
Date: Wed, 23 Jun 2021 18:12:02 +0100 [thread overview]
Message-ID: <20210623171202.161107-1-colin.king@canonical.com> (raw)
From: Colin Ian King <colin.king@canonical.com>
The bit field rsvd1 in resp is not being initialized and garbage data
is being copied from the stack back to userspace via the ib_copy_to_udata
call. Fix this by setting rsvd1 to zero. Also remove some whitespace.
Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: 879740517dab ("RDMA/bnxt_re: Update ABI to pass wqe-mode to user space")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/infiniband/hw/bnxt_re/ib_verbs.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
index 5955713234cb..45398f1777aa 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -3880,7 +3880,8 @@ int bnxt_re_alloc_ucontext(struct ib_ucontext *ctx, struct ib_udata *udata)
resp.pg_size = PAGE_SIZE;
resp.cqe_sz = sizeof(struct cq_base);
resp.max_cqd = dev_attr->max_cq_wqes;
- resp.rsvd = 0;
+ resp.rsvd = 0;
+ resp.rsvd1 = 0;
resp.comp_mask |= BNXT_RE_UCNTX_CMASK_HAVE_MODE;
resp.mode = rdev->chip_ctx->modes.wqe_mode;
--
2.31.1
next reply other threads:[~2021-06-23 17:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-23 17:12 Colin King [this message]
2021-06-23 17:38 ` [PATCH][next] RDMA/bnxt_re: Fix uninitialized struct bit field rsvd1 Jason Gunthorpe
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