scsi: libcxgbi: fix NULL pointer dereference in cxgbi_device_destroy()
If cxgb4i_ddp_init() fails then cdev->cdev2ppm will be NULL, so add a check for NULL pointer before dereferencing it. Link: https://lore.kernel.org/r/1576676731-3068-1-git-send-email-varun@chelsio.com Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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@ -121,7 +121,8 @@ static inline void cxgbi_device_destroy(struct cxgbi_device *cdev)
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"cdev 0x%p, p# %u.\n", cdev, cdev->nports);
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cxgbi_hbas_remove(cdev);
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cxgbi_device_portmap_cleanup(cdev);
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cxgbi_ppm_release(cdev->cdev2ppm(cdev));
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if (cdev->cdev2ppm)
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cxgbi_ppm_release(cdev->cdev2ppm(cdev));
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if (cdev->pmap.max_connect)
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cxgbi_free_big_mem(cdev->pmap.port_csk);
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kfree(cdev);
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