linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Sasha Levin <Alexander.Levin@microsoft.com>
To: "stable@vger.kernel.org" <stable@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: James Smart <jsmart2021@gmail.com>,
	James Smart <james.smart@broadcom.com>,
	Christoph Hellwig <hch@lst.de>,
	Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL 4.14 20/25] nvme-fcloop: Fix dropped LS's to removed target port
Date: Thu, 20 Sep 2018 02:48:29 +0000	[thread overview]
Message-ID: <20180920024810.58594-20-alexander.levin@microsoft.com> (raw)
In-Reply-To: <20180920024810.58594-1-alexander.levin@microsoft.com>

From: James Smart <jsmart2021@gmail.com>

[ Upstream commit afd299ca996929f4f98ac20da0044c0cdc124879 ]

When a targetport is removed from the config, fcloop will avoid calling
the LS done() routine thinking the targetport is gone. This leaves the
initiator reset/reconnect hanging as it waits for a status on the
Create_Association LS for the reconnect.

Change the filter in the LS callback path. If tport null (set when
failed validation before "sending to remote port"), be sure to call
done. This was the main bug. But, continue the logic that only calls
done if tport was set but there is no remoteport (e.g. case where
remoteport has been removed, thus host doesn't expect a completion).

Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/nvme/target/fcloop.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/target/fcloop.c b/drivers/nvme/target/fcloop.c
index c0080f6ab2f5..0b0a4825b3eb 100644
--- a/drivers/nvme/target/fcloop.c
+++ b/drivers/nvme/target/fcloop.c
@@ -300,7 +300,7 @@ fcloop_tgt_lsrqst_done_work(struct work_struct *work)
 	struct fcloop_tport *tport = tls_req->tport;
 	struct nvmefc_ls_req *lsreq = tls_req->lsreq;
 
-	if (tport->remoteport)
+	if (!tport || tport->remoteport)
 		lsreq->done(lsreq, tls_req->status);
 }
 
@@ -318,6 +318,7 @@ fcloop_ls_req(struct nvme_fc_local_port *localport,
 
 	if (!rport->targetport) {
 		tls_req->status = -ECONNREFUSED;
+		tls_req->tport = NULL;
 		schedule_work(&tls_req->work);
 		return ret;
 	}
-- 
2.17.1

  parent reply	other threads:[~2018-09-20  2:53 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-20  2:48 [PATCH AUTOSEL 4.14 01/25] qed: Wait for ready indication before rereading the shmem Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 02/25] qed: Wait for MCP halt and resume commands to take place Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 03/25] qed: Prevent a possible deadlock during driver load and unload Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 05/25] thermal: of-thermal: disable passive polling when thermal zone is disabled Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 04/25] qed: Avoid sending mailbox commands when MFW is not responsive Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 06/25] isofs: reject hardware sector size > 2048 bytes Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 07/25] tls: possible hang when do_tcp_sendpages hits sndbuf is full case Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 08/25] bpf: sockmap: write_space events need to be passed to TCP handler Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 09/25] net: hns: fix length and page_offset overflow when CONFIG_ARM64_64K_PAGES Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 10/25] net: hns: fix skb->truesize underestimation Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 11/25] e1000: check on netif_running() before calling e1000_up() Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 12/25] e1000: ensure to free old tx/rx rings in set_ringparam() Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 13/25] crypto: cavium/nitrox - fix for command corruption in queue full case with backlog submissions Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 14/25] hwmon: (ina2xx) fix sysfs shunt resistor read access Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 15/25] hwmon: (adt7475) Make adt7475_read_word() return errors Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 16/25] Revert "ARM: dts: imx7d: Invert legacy PCI irq mapping" Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 17/25] drm/amdgpu: Enable/disable gfx PG feature in rlc safe mode Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 18/25] drm/amdgpu: Update power state at the end of smu hw_init Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 19/25] ata: ftide010: Add a quirk for SQ201 Sasha Levin
2018-09-20  2:48 ` Sasha Levin [this message]
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 21/25] ARM: dts: omap4-droid4: Fix emmc errors seen on some devices Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 22/25] arm/arm64: smccc-1.1: Make return values unsigned long Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 24/25] i2c: i801: Allow ACPI AML access I/O ports not reserved for SMBus Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 23/25] arm/arm64: smccc-1.1: Handle function result as parameters Sasha Levin
2018-09-20  2:48 ` [PATCH AUTOSEL 4.14 25/25] x86/pti: Fix section mismatch warning/error Sasha Levin

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=20180920024810.58594-20-alexander.levin@microsoft.com \
    --to=alexander.levin@microsoft.com \
    --cc=hch@lst.de \
    --cc=james.smart@broadcom.com \
    --cc=jsmart2021@gmail.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=stable@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).