[SCSI] qla2xxx: Fix crash in qla2x00_abort_all_cmds() on unload

I hit a crash in qla2x00_abort_all_cmds() if the qla2xxx module is
unloaded right after it is loaded.  I debugged this down to the abort
handling improperly treating a command of type SRB_ADISC_CMD as if it
had a bsg_job to complete when that command actually uses the iocb_cmd
part of the union.  (I guess to hit this one has to unload the module
while the async FC initialization is still in progress)

It seems we should only look for a bsg_job if type is SRB_ELS_CMD_RPT,
SRB_ELS_CMD_HST or SRB_CT_CMD, so switch the test to make that explicit.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Acked-by: Chad Dupuis <chad.dupuis@qlogic.com>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 4cace3f20c04f5f0170db61fb6ec5f693a47922b..1e69527f1e4ec21a8e66ab59f7dfb73d26c478dd 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1328,10 +1328,9 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
                                        qla2x00_sp_compl(ha, sp);
                                } else {
                                        ctx = sp->ctx;
-                                       if (ctx->type == SRB_LOGIN_CMD ||
-                                           ctx->type == SRB_LOGOUT_CMD) {
-                                               ctx->u.iocb_cmd->free(sp);
-                                       } else {
+                                       if (ctx->type == SRB_ELS_CMD_RPT ||
+                                           ctx->type == SRB_ELS_CMD_HST ||
+                                           ctx->type == SRB_CT_CMD) {
                                                struct fc_bsg_job *bsg_job =
                                                    ctx->u.bsg_job;
                                                if (bsg_job->request->msgcode
@@ -1343,6 +1342,8 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
                                                kfree(sp->ctx);
                                                mempool_free(sp,
                                                        ha->srb_mempool);
+                                       } else {
+                                               ctx->u.iocb_cmd->free(sp);
                                        }
                                }
                        }