From: Sarang Radke Date: Tue, 6 Dec 2011 10:34:10 +0000 (-0800) Subject: [SCSI] qla4xxx: fix call trace on rmmod with ql4xdontresethba=1 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8a288960192591c405767d98ebe372f66df1a6c6;p=linux-beck.git [SCSI] qla4xxx: fix call trace on rmmod with ql4xdontresethba=1 abort all active commands from eh_host_reset in-case of ql4xdontresethba=1 Fix following call trace:- Nov 21 14:50:47 172.17.140.111 qla4xxx 0000:13:00.4: qla4_8xxx_disable_msix: qla4xxx (rsp_q) Nov 21 14:50:47 172.17.140.111 qla4xxx 0000:13:00.4: PCI INT A disabled Nov 21 14:50:47 172.17.140.111 slab error in kmem_cache_destroy(): cache `qla4xxx_srbs': Can't free all objects Nov 21 14:50:47 172.17.140.111 Pid: 9154, comm: rmmod Tainted: G O 3.2.0-rc2+ #2 Nov 21 14:50:47 172.17.140.111 Call Trace: Nov 21 14:50:47 172.17.140.111 [] ? kmem_cache_destroy+0x9a/0xb0 Nov 21 14:50:47 172.17.140.111 [] ? sys_delete_module+0x14a/0x210 Nov 21 14:50:47 172.17.140.111 [] ? do_munmap+0x202/0x280 Nov 21 14:50:47 172.17.140.111 [] ? audit_syscall_entry+0x1ae/0x1d0 Nov 21 14:50:47 172.17.140.111 [] ? sysenter_do_call+0x12/0x28 Nov 21 14:51:50 172.17.140.111 SLAB: cache with size 64 has lost its name Nov 21 14:51:50 172.17.140.111 iscsi: registered transport (qla4xxx) Nov 21 14:51:50 172.17.140.111 qla4xxx 0000:13:00.4: PCI INT A -> GSI 28 (level, low) -> IRQ 28 Signed-off-by: Sarang Radke Signed-off-by: Vikas Chaudhary Reviewed-by: Mike Christie Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c index 4169c8baa112..dde539ca4b3d 100644 --- a/drivers/scsi/qla4xxx/ql4_os.c +++ b/drivers/scsi/qla4xxx/ql4_os.c @@ -2806,6 +2806,7 @@ dpc_post_reset_ha: **/ static void qla4xxx_free_adapter(struct scsi_qla_host *ha) { + qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { /* Turn-off interrupts on the card. */ @@ -4815,6 +4816,20 @@ static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd) return SUCCESS; } +/** + * qla4xxx_is_eh_active - check if error handler is running + * @shost: Pointer to SCSI Host struct + * + * This routine finds that if reset host is called in EH + * scenario or from some application like sg_reset + **/ +static int qla4xxx_is_eh_active(struct Scsi_Host *shost) +{ + if (shost->shost_state == SHOST_RECOVERY) + return 1; + return 0; +} + /** * qla4xxx_eh_host_reset - kernel callback * @cmd: Pointer to Linux's SCSI command structure @@ -4832,6 +4847,11 @@ static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) if (ql4xdontresethba) { DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", ha->host_no, __func__)); + + /* Clear outstanding srb in queues */ + if (qla4xxx_is_eh_active(cmd->device->host)) + qla4xxx_abort_active_cmds(ha, DID_ABORT << 16); + return FAILED; }