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IB/srp: Stop the scsi_eh_<n> and scsi_tmf_<n> threads if login fails 

scsi_host_alloc() not only allocates memory for a SCSI host but also
creates the scsi_eh_<n> kernel thread and the scsi_tmf_<n> workqueue.
Stop these threads if login fails by calling scsi_host_put().

Reported-by: Konstantin Krotov <kkv@clodo.ru>
Fixes: fb49c8bbaa ("Remove an extraneous scsi_host_put() from an error path")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Sebastian Parschauer <sebastian.riemer@profitbricks.com>
Cc: <stable@vger.kernel.org> #v3.19
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Bart Van Assche 2015-08-14 11:01:09 -07:00 committed by Doug Ledford
parent 713ef24e41
commit bc44bd1d86
1 changed files with 9 additions and 0 deletions
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9
drivers/infiniband/ulp/srp/ib_srp.c
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@ -2758,6 +2758,13 @@ static int srp_sdev_count(struct Scsi_Host *host)
return c;
}
/*
* Return values:
* < 0 upon failure. Caller is responsible for SRP target port cleanup.
* 0 and target->state == SRP_TARGET_REMOVED if asynchronous target port
* removal has been scheduled.
* 0 and target->state != SRP_TARGET_REMOVED upon success.
*/
static int srp_add_target(struct srp_host *host, struct srp_target_port *target)
{
struct srp_rport_identifiers ids;
@ -3296,6 +3303,8 @@ out:
mutex_unlock(&host->add_target_mutex);
scsi_host_put(target->scsi_host);
if (ret < 0)
scsi_host_put(target->scsi_host);
return ret;