From: Leon Romanovsky <leon@kernel.org>
To: Doug Ledford <dledford@redhat.com>, Jason Gunthorpe <jgg@nvidia.com>
Cc: Maor Gottlieb <maorg@nvidia.com>,
Bart Van Assche <bvanassche@acm.org>,
linux-rdma@vger.kernel.org,
"Nicholas A. Bellinger" <nab@risingtidesystems.com>,
target-devel@vger.kernel.org
Subject: [PATCH rdma-next] IB/srpt: Fix memory leak in srpt_add_one
Date: Mon, 26 Oct 2020 15:27:37 +0200 [thread overview]
Message-ID: <20201026132737.1338171-1-leon@kernel.org> (raw)
From: Maor Gottlieb <maorg@nvidia.com>
In case srpt_refresh_port failed for the second port, then
we don't unregister the MAD agnet.
Fixes: a42d985bd5b2 ("ib_srpt: Initial SRP Target merge for v3.3-rc1")
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
drivers/infiniband/ulp/srpt/ib_srpt.c | 30 ++++++++++++++++++---------
1 file changed, 20 insertions(+), 10 deletions(-)
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 0065eb17ae36..cfe38996ea91 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -619,13 +619,7 @@ static int srpt_refresh_port(struct srpt_port *sport)
return 0;
}
-/**
- * srpt_unregister_mad_agent - unregister MAD callback functions
- * @sdev: SRPT HCA pointer.
- *
- * Note: It is safe to call this function more than once for the same device.
- */
-static void srpt_unregister_mad_agent(struct srpt_device *sdev)
+static void __srpt_unregister_mad_agent(struct srpt_device *sdev, int port_cnt)
{
struct ib_port_modify port_modify = {
.clr_port_cap_mask = IB_PORT_DEVICE_MGMT_SUP,
@@ -633,7 +627,10 @@ static void srpt_unregister_mad_agent(struct srpt_device *sdev)
struct srpt_port *sport;
int i;
- for (i = 1; i <= sdev->device->phys_port_cnt; i++) {
+ if (!port_cnt)
+ return;
+
+ for (i = 1; i <= port_cnt; i++) {
sport = &sdev->port[i - 1];
WARN_ON(sport->port != i);
if (sport->mad_agent) {
@@ -644,6 +641,17 @@ static void srpt_unregister_mad_agent(struct srpt_device *sdev)
}
}
+/**
+ * srpt_unregister_mad_agent - unregister MAD callback functions
+ * @sdev: SRPT HCA pointer.
+ *
+ * Note: It is safe to call this function more than once for the same device.
+ */
+static void srpt_unregister_mad_agent(struct srpt_device *sdev)
+{
+ __srpt_unregister_mad_agent(sdev, sdev->device->phys_port_cnt);
+}
+
/**
* srpt_alloc_ioctx - allocate a SRPT I/O context structure
* @sdev: SRPT HCA pointer.
@@ -3185,7 +3193,8 @@ static int srpt_add_one(struct ib_device *device)
if (ret) {
pr_err("MAD registration failed for %s-%d.\n",
dev_name(&sdev->device->dev), i);
- goto err_event;
+ i--;
+ goto err_port;
}
}
@@ -3197,7 +3206,8 @@ static int srpt_add_one(struct ib_device *device)
pr_debug("added %s.\n", dev_name(&device->dev));
return 0;
-err_event:
+err_port:
+ __srpt_unregister_mad_agent(sdev, i);
ib_unregister_event_handler(&sdev->event_handler);
err_cm:
if (sdev->cm_id)
--
2.26.2
next reply other threads:[~2020-10-26 13:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-26 13:27 Leon Romanovsky [this message]
2020-10-27 2:22 ` [PATCH rdma-next] IB/srpt: Fix memory leak in srpt_add_one Bart Van Assche
2020-10-27 5:34 ` Leon Romanovsky
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201026132737.1338171-1-leon@kernel.org \
--to=leon@kernel.org \
--cc=bvanassche@acm.org \
--cc=dledford@redhat.com \
--cc=jgg@nvidia.com \
--cc=linux-rdma@vger.kernel.org \
--cc=maorg@nvidia.com \
--cc=nab@risingtidesystems.com \
--cc=target-devel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).