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[SCSI] bnx2fc: Fix panic caused because of incorrect errror handling in create().

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Driver incorrectly calls bnx2fc_interface_cleanup() when bnx2fc_if_create fails
which accesses bad pointer. Handle bnx2fc_if_create failure by directly calling
bnx2fc_net_cleanup.

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Bhanu Prakash Gollapudi 2011-08-30 15:54:52 -07:00 committed by James Bottomley
parent 0cbf32e168
commit 013068fa6f
1 changed files with 10 additions and 5 deletions
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15
drivers/scsi/bnx2fc/bnx2fc_fcoe.c
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@ -1441,6 +1441,14 @@ static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
return NULL; return NULL;
} }
static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
{
/* Dont listen for Ethernet packets anymore */
__dev_remove_pack(&interface->fcoe_packet_type);
__dev_remove_pack(&interface->fip_packet_type);
synchronize_net();
}
static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface) static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
{ {
struct fc_lport *lport = interface->ctlr.lp; struct fc_lport *lport = interface->ctlr.lp;
@ -1453,10 +1461,7 @@ static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
/* Free existing transmit skbs */ /* Free existing transmit skbs */
fcoe_clean_pending_queue(lport); fcoe_clean_pending_queue(lport);
/* Dont listen for Ethernet packets anymore */ bnx2fc_net_cleanup(interface);
__dev_remove_pack(&interface->fcoe_packet_type);
__dev_remove_pack(&interface->fip_packet_type);
synchronize_net();
bnx2fc_free_vport(hba, lport); bnx2fc_free_vport(hba, lport);
} }
@ -1991,7 +1996,6 @@ static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
if (!lport) { if (!lport) {
printk(KERN_ERR PFX "Failed to create interface (%s)\n", printk(KERN_ERR PFX "Failed to create interface (%s)\n",
netdev->name); netdev->name);
bnx2fc_interface_cleanup(interface);
rc = -EINVAL; rc = -EINVAL;
goto if_create_err; goto if_create_err;
} }
@ -2026,6 +2030,7 @@ static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
if_create_err: if_create_err:
destroy_workqueue(interface->timer_work_queue); destroy_workqueue(interface->timer_work_queue);
ifput_err: ifput_err:
bnx2fc_net_cleanup(interface);
bnx2fc_interface_put(interface); bnx2fc_interface_put(interface);
netdev_err: netdev_err:
module_put(THIS_MODULE); module_put(THIS_MODULE);