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scsi: qla2xxx: Fix SRB leak on switch command timeout 

when GPSC/GPDB switch command fails, driver just returns without doing a
proper cleanup. This patch fixes this memory leak by calling sp->free() in
the error path.

Link: https://lore.kernel.org/r/20191105150657.8092-4-hmadhani@marvell.com
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Quinn Tran 2019-11-05 07:06:52 -08:00 committed by Martin K. Petersen
parent 71c80b75ce
commit af2a0c51b1
5 changed files with 16 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/scsi/qla2xxx/qla_gs.c
View File

@ -3010,7 +3010,7 @@ static void qla24xx_async_gpsc_sp_done(srb_t *sp, int res)
fcport->flags &= ~(FCF_ASYNC_SENT | FCF_ASYNC_ACTIVE);
if (res == QLA_FUNCTION_TIMEOUT)
return;
goto done;
if (res == (DID_ERROR << 16)) {
/* entry status error */

11
drivers/scsi/qla2xxx/qla_init.c
View File

@ -1151,19 +1151,18 @@ static void qla24xx_async_gpdb_sp_done(srb_t *sp, int res)
"Async done-%s res %x, WWPN %8phC mb[1]=%x mb[2]=%x \n",
sp->name, res, fcport->port_name, mb[1], mb[2]);
if (res == QLA_FUNCTION_TIMEOUT) {
dma_pool_free(sp->vha->hw->s_dma_pool, sp->u.iocb_cmd.u.mbx.in,
sp->u.iocb_cmd.u.mbx.in_dma);
return;
}
fcport->flags &= ~(FCF_ASYNC_SENT | FCF_ASYNC_ACTIVE);
if (res == QLA_FUNCTION_TIMEOUT)
goto done;
memset(&ea, 0, sizeof(ea));
ea.fcport = fcport;
ea.sp = sp;
qla24xx_handle_gpdb_event(vha, &ea);
done:
dma_pool_free(ha->s_dma_pool, sp->u.iocb_cmd.u.mbx.in,
sp->u.iocb_cmd.u.mbx.in_dma);

4
drivers/scsi/qla2xxx/qla_mbx.c
View File

@ -6287,17 +6287,13 @@ int qla24xx_send_mb_cmd(struct scsi_qla_host *vha, mbx_cmd_t *mcp)
case QLA_SUCCESS:
ql_dbg(ql_dbg_mbx, vha, 0x119d, "%s: %s done.\n",
__func__, sp->name);
sp->free(sp);
break;
default:
ql_dbg(ql_dbg_mbx, vha, 0x119e, "%s: %s Failed. %x.\n",
__func__, sp->name, rval);
sp->free(sp);
break;
}
return rval;
done_free_sp:
sp->free(sp);
done:

11
drivers/scsi/qla2xxx/qla_mid.c
View File

@ -944,7 +944,7 @@ int qla24xx_control_vp(scsi_qla_host_t *vha, int cmd)
sp = qla2x00_get_sp(base_vha, NULL, GFP_KERNEL);
if (!sp)
goto done;
return rval;
sp->type = SRB_CTRL_VP;
sp->name = "ctrl_vp";
@ -960,7 +960,7 @@ int qla24xx_control_vp(scsi_qla_host_t *vha, int cmd)
ql_dbg(ql_dbg_async, vha, 0xffff,
"%s: %s Failed submission. %x.\n",
__func__, sp->name, rval);
goto done_free_sp;
goto done;
}
ql_dbg(ql_dbg_vport, vha, 0x113f, "%s hndl %x submitted\n",
@ -978,16 +978,13 @@ int qla24xx_control_vp(scsi_qla_host_t *vha, int cmd)
case QLA_SUCCESS:
ql_dbg(ql_dbg_vport, vha, 0xffff, "%s: %s done.\n",
__func__, sp->name);
goto done_free_sp;
break;
default:
ql_dbg(ql_dbg_vport, vha, 0xffff, "%s: %s Failed. %x.\n",
__func__, sp->name, rval);
goto done_free_sp;
break;
}
done:
return rval;
done_free_sp:
sp->free(sp);
return rval;
}

7
drivers/scsi/qla2xxx/qla_os.c
View File

@ -996,7 +996,7 @@ qla2xxx_mqueuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd,
ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x3078,
"Start scsi failed rval=%d for cmd=%p.\n", rval, cmd);
if (rval == QLA_INTERFACE_ERROR)
goto qc24_fail_command;
goto qc24_free_sp_fail_command;
goto qc24_host_busy_free_sp;
}
@ -1008,6 +1008,11 @@ qc24_host_busy_free_sp:
qc24_target_busy:
return SCSI_MLQUEUE_TARGET_BUSY;
qc24_free_sp_fail_command:
sp->free(sp);
CMD_SP(cmd) = NULL;
qla2xxx_rel_qpair_sp(sp->qpair, sp);
qc24_fail_command:
cmd->scsi_done(cmd);