Chris Stromsoe <[EMAIL PROTECTED]> wrote:
>Within 2 or 3 minutes after issuing
>
>ip link set bond1 mtu 9000
>
>I get one "NETDEV WATCHDOG: eth2: transmit timed out" to the console, and
>then this starts to repeat:
>
>BUG: soft lockup detected on CPU#0!
I believe this is the same bug that is fixed by this change:
commit c4f283b1f275e5528c13c119e5cfc80cdba55d00
Author: Jay Vosburgh <[EMAIL PROTECTED]>
Date: Wed Feb 28 17:03:20 2007 -0800
bonding: fix double dev_add_pack
Bonding can erroneously register the same packet_type to receive
ARPs (for use by ARP validation): once at device open time, and once via
sysfs. Since sysfs can change the validate setting (and thus register
or unregister) at any time, a flag is needed to synchronize with device
open in order to avoid double registrations, and the simplest place is
within the packet_type structure itself. Double unregister is not an
issue.
Bug reported by Ulrich Oelmann <[EMAIL PROTECTED]>.
Signed-off-by: Jay Vosburgh <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index ea73ebf..68afcb5 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3423,6 +3423,9 @@ void bond_register_arp(struct bonding *b
{
struct packet_type *pt = &bond->arp_mon_pt;
+ if (pt->type)
+ return;
+
pt->type = htons(ETH_P_ARP);
pt->dev = NULL; /*bond->dev;XXX*/
pt->func = bond_arp_rcv;
@@ -3431,7 +3434,10 @@ void bond_register_arp(struct bonding *b
void bond_unregister_arp(struct bonding *bond)
{
- dev_remove_pack(&bond->arp_mon_pt);
+ struct packet_type *pt = &bond->arp_mon_pt;
+
+ dev_remove_pack(pt);
+ pt->type = 0;
}
/*---------------------------- Hashing Policies -----------------------------*/
-J
---
-Jay Vosburgh, IBM Linux Technology Center, [EMAIL PROTECTED]
-
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