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qla2xxx: Fix shost use-after-free on device removal 

Once calling scsi_host_put, be careful to not access qla_hw_data through
the Scsi_Host private data (ie, scsi_qla_host base_vha).

Fixes: fe1b806f4f ("qla2xxx: Refactor shutdown code so some functionality can be reused")
Cc: stable@vger.kernel.org # 3.14, 3.15, 3.16
Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Acked-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Joe Lawrence 2014-08-26 17:10:41 -04:00 committed by Christoph Hellwig
parent c01a8bc084
commit db7157d4cf
1 changed files with 2 additions and 4 deletions
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6
drivers/scsi/qla2xxx/qla_os.c
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@ -3119,10 +3119,8 @@ qla2x00_unmap_iobases(struct qla_hw_data *ha)
}
static void
qla2x00_clear_drv_active(scsi_qla_host_t *vha)
qla2x00_clear_drv_active(struct qla_hw_data *ha)
{
struct qla_hw_data *ha = vha->hw;
if (IS_QLA8044(ha)) {
qla8044_idc_lock(ha);
qla8044_clear_drv_active(ha);
@ -3193,7 +3191,7 @@ qla2x00_remove_one(struct pci_dev *pdev)
scsi_host_put(base_vha->host);
qla2x00_clear_drv_active(base_vha);
qla2x00_clear_drv_active(ha);
qla2x00_unmap_iobases(ha);