From: Aditya Pakki <pakki001@umn.edu> To: pakki001@umn.edu Cc: kjlu@umn.edu, Bart Van Assche <bvanassche@acm.org>, Doug Ledford <dledford@redhat.com>, Jason Gunthorpe <jgg@ziepe.ca>, linux-rdma@vger.kernel.org, target-devel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] scsi: RDMA/srpt: Fix incorrect pointer dereference Date: Tue, 17 Dec 2019 13:26:49 -0600 [thread overview] Message-ID: <20191217192649.24212-1-pakki001@umn.edu> (raw) In srpt_queue_response(), the rdma channel ch is first dereferenced and then checked for NULL. This renders the assertion ineffective. This patch removes the assertion and avoids potential NULL pointer dereference. Signed-off-by: Aditya Pakki <pakki001@umn.edu> --- drivers/infiniband/ulp/srpt/ib_srpt.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c index 23c782e3d49a..bbc6729c81c0 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.c +++ b/drivers/infiniband/ulp/srpt/ib_srpt.c @@ -2803,15 +2803,17 @@ static void srpt_queue_response(struct se_cmd *cmd) struct srpt_send_ioctx *ioctx = container_of(cmd, struct srpt_send_ioctx, cmd); struct srpt_rdma_ch *ch = ioctx->ch; - struct srpt_device *sdev = ch->sport->sdev; struct ib_send_wr send_wr, *first_wr = &send_wr; - struct ib_sge sge; enum srpt_command_state state; + struct srpt_device *sdev; int resp_len, ret, i; + struct ib_sge sge; u8 srp_tm_status; - BUG_ON(!ch); + if (WARN_ON(!ch)) + return; + sdev = ch->sport->sdev; state = ioctx->state; switch (state) { case SRPT_STATE_NEW: -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Aditya Pakki <pakki001@umn.edu> To: pakki001@umn.edu Cc: kjlu@umn.edu, Bart Van Assche <bvanassche@acm.org>, Doug Ledford <dledford@redhat.com>, Jason Gunthorpe <jgg@ziepe.ca>, linux-rdma@vger.kernel.org, target-devel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] scsi: RDMA/srpt: Fix incorrect pointer dereference Date: Tue, 17 Dec 2019 19:26:49 +0000 [thread overview] Message-ID: <20191217192649.24212-1-pakki001@umn.edu> (raw) In srpt_queue_response(), the rdma channel ch is first dereferenced and then checked for NULL. This renders the assertion ineffective. This patch removes the assertion and avoids potential NULL pointer dereference. Signed-off-by: Aditya Pakki <pakki001@umn.edu> --- drivers/infiniband/ulp/srpt/ib_srpt.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c index 23c782e3d49a..bbc6729c81c0 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.c +++ b/drivers/infiniband/ulp/srpt/ib_srpt.c @@ -2803,15 +2803,17 @@ static void srpt_queue_response(struct se_cmd *cmd) struct srpt_send_ioctx *ioctx container_of(cmd, struct srpt_send_ioctx, cmd); struct srpt_rdma_ch *ch = ioctx->ch; - struct srpt_device *sdev = ch->sport->sdev; struct ib_send_wr send_wr, *first_wr = &send_wr; - struct ib_sge sge; enum srpt_command_state state; + struct srpt_device *sdev; int resp_len, ret, i; + struct ib_sge sge; u8 srp_tm_status; - BUG_ON(!ch); + if (WARN_ON(!ch)) + return; + sdev = ch->sport->sdev; state = ioctx->state; switch (state) { case SRPT_STATE_NEW: -- 2.20.1
next reply other threads:[~2019-12-17 19:26 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-12-17 19:26 Aditya Pakki [this message] 2019-12-17 19:26 ` [PATCH] scsi: RDMA/srpt: Fix incorrect pointer dereference Aditya Pakki 2019-12-17 19:33 ` Bart Van Assche 2019-12-17 19:33 ` Bart Van Assche
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=20191217192649.24212-1-pakki001@umn.edu \ --to=pakki001@umn.edu \ --cc=bvanassche@acm.org \ --cc=dledford@redhat.com \ --cc=jgg@ziepe.ca \ --cc=kjlu@umn.edu \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-rdma@vger.kernel.org \ --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: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.