From: Andy Grover Date: Fri, 22 May 2015 21:07:44 +0000 (-0700) Subject: target/pscsi: Don't leak scsi_host if hba is VIRTUAL_HOST X-Git-Tag: v3.2.70~56 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=48793a2e5abc126a6446d8497c2117489622e9db;p=thirdparty%2Fkernel%2Fstable.git target/pscsi: Don't leak scsi_host if hba is VIRTUAL_HOST commit 5a7125c64def3b21f8147eca8b54949a60963942 upstream. See https://bugzilla.redhat.com/show_bug.cgi?id=1025672 We need to put() the reference to the scsi host that we got in pscsi_configure_device(). In VIRTUAL_HOST mode it is associated with the dev_virt, not the hba_virt. Signed-off-by: Andy Grover Signed-off-by: Nicholas Bellinger [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings --- diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c index ebf9b600a58d0..1fb9e58989532 100644 --- a/drivers/target/target_core_pscsi.c +++ b/drivers/target/target_core_pscsi.c @@ -569,6 +569,7 @@ static struct se_device *pscsi_create_virtdevice( " pdv_host_id: %d\n", pdv->pdv_host_id); return ERR_PTR(-EINVAL); } + pdv->pdv_lld_host = sh; } } else { if (phv->phv_mode == PHV_VIRUTAL_HOST_ID) { @@ -655,6 +656,8 @@ static void pscsi_free_device(void *p) if ((phv->phv_mode == PHV_LLD_SCSI_HOST_NO) && (phv->phv_lld_host != NULL)) scsi_host_put(phv->phv_lld_host); + else if (pdv->pdv_lld_host) + scsi_host_put(pdv->pdv_lld_host); if ((sd->type == TYPE_DISK) || (sd->type == TYPE_ROM)) scsi_device_put(sd); diff --git a/drivers/target/target_core_pscsi.h b/drivers/target/target_core_pscsi.h index fdc17b6aefb36..8b0a3369dc9f6 100644 --- a/drivers/target/target_core_pscsi.h +++ b/drivers/target/target_core_pscsi.h @@ -46,6 +46,7 @@ struct pscsi_dev_virt { struct block_device *pdv_bd; struct scsi_device *pdv_sd; struct se_hba *pdv_se_hba; + struct Scsi_Host *pdv_lld_host; } ____cacheline_aligned; typedef enum phv_modes {