diff options
| author | James Smart <jsmart2021@gmail.com> | 2022-09-11 15:14:58 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-09-15 22:18:27 -0400 |
| commit | 6e5c5d246e6c16127327eeecf61ef2cf21a94ce5 (patch) | |
| tree | e620636031c09cb8f6b6dfd29de0555275ec5639 /drivers/scsi/lpfc/lpfc.h | |
| parent | 845363516bb75bc35089b4093d1fae139f2fffc6 (diff) | |
scsi: lpfc: Move scsi_host_template outside dynamically allocated/freed phba
On a PCI hotplug capable system, it is possible for scsi_device_put() to
happen after lpfc_pci_remove_one() is called. As a result, the
sdev->host->hostt->module dereference is for a previously freed memory
location because the phba structure containing the hostt template was
already freed when lpfc_pci_remove_one() returned.
Since the lpfc module is still loaded during power slot disable, all
scsi_host_templates should be declared as part of the global data segment
instead of inside the heap allocated phba structure. This way the
sdev->host->hostt memory area is always valid as long as the module is
loaded regardless if PCI hotplug dynamically allocates or frees phba
structures.
Move all scsi_host_templates in the phba structure to global variables.
Create a small helper routine to determine appropriate sg_tablesize during
shost allocation.
Link: https://lore.kernel.org/r/20220911221505.117655-7-jsmart2021@gmail.com
Co-developed-by: Dwip N. Banerjee <dnbanerg@us.ibm.com>
Signed-off-by: Dwip N. Banerjee <dnbanerg@us.ibm.com>
Co-developed-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index 5d07418fa4ea..68b3bd70dd52 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -1596,10 +1596,6 @@ struct lpfc_hba { char os_host_name[MAXHOSTNAMELEN]; - /* SCSI host template information - for physical port */ - struct scsi_host_template port_template; - /* SCSI host template information - for all vports */ - struct scsi_host_template vport_template; atomic_t dbg_log_idx; atomic_t dbg_log_cnt; atomic_t dbg_log_dmping; |