On 09/16/2015 04:30 PM, Matthew R. Ochs wrote: > Currently, scsi_host_put() is being called prematurely in the > remove path and is missing entirely in an error cleanup path. > The former can lead to memory being freed too early with > subsequent access potentially corrupting data whilst the former > would result in a memory leak. > > Move the usage on remove to be the last cleanup action taken > and introduce a call to scsi_host_put() in the one initialization > error path that does not use remove to cleanup. > > Signed-off-by: Matthew R. Ochs <mro...@linux.vnet.ibm.com> > Signed-off-by: Manoj N. Kumar <ma...@linux.vnet.ibm.com> > --- > drivers/scsi/cxlflash/main.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c > index fc77cd4..1856a73 100644 > --- a/drivers/scsi/cxlflash/main.c > +++ b/drivers/scsi/cxlflash/main.c > @@ -734,7 +734,6 @@ static void cxlflash_remove(struct pci_dev *pdev) > case INIT_STATE_SCSI: > cxlflash_term_local_luns(cfg); > scsi_remove_host(cfg->host); > - scsi_host_put(cfg->host); > /* Fall through */ > case INIT_STATE_AFU: > term_afu(cfg); > @@ -744,6 +743,7 @@ static void cxlflash_remove(struct pci_dev *pdev) > case INIT_STATE_NONE: > flush_work(&cfg->work_q); > free_mem(cfg); > + scsi_host_put(cfg->host); > break; > } > > @@ -2415,6 +2415,7 @@ static int cxlflash_probe(struct pci_dev *pdev, > dev_err(&pdev->dev, "%s: call to scsi_host_alloc failed!\n",
This message text is wrong. Its the call to alloc_mem that has failed in this leg, not the call to scsi_host_alloc. > __func__); > rc = -ENOMEM; > + scsi_host_put(cfg->host); > goto out; > } > -- Brian King Power Linux I/O IBM Linux Technology Center _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
