This is a note to let you know that I've just added the patch titled
IB/srp: Fix a connection setup race
to the 4.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ib-srp-fix-a-connection-setup-race.patch
and it can be found in the queue-4.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8de9fe3a1d4ac8c3e4953fa4b7d81f863f5196ad Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
Date: Mon, 18 May 2015 13:23:36 +0200
Subject: IB/srp: Fix a connection setup race
From: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
commit 8de9fe3a1d4ac8c3e4953fa4b7d81f863f5196ad upstream.
Avoid that receiving a DREQ while RDMA channels are being
established causes target->qp_in_error to be reset.
Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
Cc: Sagi Grimberg <sagig@xxxxxxxxxxxx>
Cc: Sebastian Parschauer <sebastian.riemer@xxxxxxxxxxxxxxxx>
Signed-off-by: Doug Ledford <dledford@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/ulp/srp/ib_srp.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -993,8 +993,6 @@ static int srp_connect_ch(struct srp_rdm
WARN_ON_ONCE(!multich && target->connected);
- target->qp_in_error = false;
-
ret = srp_lookup_path(ch);
if (ret)
return ret;
@@ -1243,6 +1241,9 @@ static int srp_rport_reconnect(struct sr
for (j = 0; j < target->queue_size; ++j)
list_add(&ch->tx_ring[j]->list, &ch->free_tx);
}
+
+ target->qp_in_error = false;
+
for (i = 0; i < target->ch_count; i++) {
ch = &target->ch[i];
if (ret || !ch->target) {
Patches currently in stable-queue which might be from bart.vanassche@xxxxxxxxxxx are
queue-4.1/ib-srp-fix-a-connection-setup-race.patch
queue-4.1/scsi_transport_srp-introduce-srp_wait_for_queuecommand.patch
queue-4.1/ib-srp-fix-connection-state-tracking.patch
queue-4.1/ib-srp-fix-reconnection-failure-handling.patch
queue-4.1/scsi_transport_srp-fix-a-race-condition.patch
queue-4.1/ib-srp-remove-an-extraneous-scsi_host_put-from-an-error-path.patch
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