[PATCH v3 05/16] nvmet-fcloop: Remove remote port from list when unlinking

Daniel Wagner
2023-12-18T15:44:59Z

The remote port is removed too late from fcloop_nports list. Remove it
when port is unregistered.

This prevents a busy loop in fcloop_exit, because it is possible the
remote port is found in the list and thus we will never progress.

The kernel log will be spammed with

nvme_fcloop: fcloop_exit: Failed deleting remote port
nvme_fcloop: fcloop_exit: Failed deleting target port

Signed-off-by: Daniel Wagner <dwagner@suse.de>
---
drivers/nvme/target/fcloop.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/nvme/target/fcloop.c b/drivers/nvme/target/fcloop.c
index c65a73433c05..ead349af30f1 100644
--- a/drivers/nvme/target/fcloop.c
+++ b/drivers/nvme/target/fcloop.c
@@ -995,11 +995,6 @@ fcloop_nport_free(struct kref *ref)
{
struct fcloop_nport *nport =
container_of(ref, struct fcloop_nport, ref);
- unsigned long flags;
-
- spin_lock_irqsave(&fcloop_lock, flags);
- list_del(&nport->nport_list);
- spin_unlock_irqrestore(&fcloop_lock, flags);

kfree(nport);
}
@@ -1357,6 +1352,8 @@ __unlink_remote_port(struct fcloop_nport *nport)
nport->tport->remoteport = NULL;
nport->rport = NULL;

+ list_del(&nport->nport_list);
+
return rport;
}

--
2.43.0