OpenCloudOS-Kernel/drivers/net
Rob Herring 7c4009192e net: calxedaxgmac: fix hang on rx refill
Fix intermittent hangs in xgmac_rx_refill. If a ring buffer entry already
had an skb allocated, then xgmac_rx_refill would get stuck in a loop. This
can happen on a rx error when we just leave the skb allocated to the entry.

[ 7884.510000] INFO: rcu_preempt detected stall on CPU 0 (t=727315 jiffies)
[ 7884.510000] [<c0010a59>] (unwind_backtrace+0x1/0x98) from [<c006fd93>] (__rcu_pending+0x11b/0x2c4)
[ 7884.510000] [<c006fd93>] (__rcu_pending+0x11b/0x2c4) from [<c0070b95>] (rcu_check_callbacks+0xed/0x1a8)
[ 7884.510000] [<c0070b95>] (rcu_check_callbacks+0xed/0x1a8) from [<c0036abb>] (update_process_times+0x2b/0x48)
[ 7884.510000] [<c0036abb>] (update_process_times+0x2b/0x48) from [<c004e8fd>] (tick_sched_timer+0x51/0x94)
[ 7884.510000] [<c004e8fd>] (tick_sched_timer+0x51/0x94) from [<c0045527>] (__run_hrtimer+0x4f/0x1e8)
[ 7884.510000] [<c0045527>] (__run_hrtimer+0x4f/0x1e8) from [<c0046003>] (hrtimer_interrupt+0xd7/0x1e4)
[ 7884.510000] [<c0046003>] (hrtimer_interrupt+0xd7/0x1e4) from [<c00101d3>] (twd_handler+0x17/0x24)
[ 7884.510000] [<c00101d3>] (twd_handler+0x17/0x24) from [<c006be39>] (handle_percpu_devid_irq+0x59/0x114)
[ 7884.510000] [<c006be39>] (handle_percpu_devid_irq+0x59/0x114) from [<c0069aab>] (generic_handle_irq+0x17/0x2c)
[ 7884.510000] [<c0069aab>] (generic_handle_irq+0x17/0x2c) from [<c000cc8d>] (handle_IRQ+0x35/0x7c)
[ 7884.510000] [<c000cc8d>] (handle_IRQ+0x35/0x7c) from [<c033b153>] (__irq_svc+0x33/0xb8)
[ 7884.510000] [<c033b153>] (__irq_svc+0x33/0xb8) from [<c0244b06>] (xgmac_rx_refill+0x3a/0x140)
[ 7884.510000] [<c0244b06>] (xgmac_rx_refill+0x3a/0x140) from [<c02458ed>] (xgmac_poll+0x265/0x3bc)
[ 7884.510000] [<c02458ed>] (xgmac_poll+0x265/0x3bc) from [<c029fcbf>] (net_rx_action+0xc3/0x200)
[ 7884.510000] [<c029fcbf>] (net_rx_action+0xc3/0x200) from [<c0030cab>] (__do_softirq+0xa3/0x1bc)

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 23:25:47 -07:00
..
appletalk drivers: net: Remove casts to same type 2012-06-06 09:31:33 -07:00
arcnet arcnet: rimi: Fix device name in debug output 2012-04-17 22:22:43 -04:00
bonding Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-06-25 15:50:32 -07:00
caif caif-hsi: Fix merge issues. 2012-06-29 00:46:53 -07:00
can can: flexcan: add hardware controller version support 2012-07-03 09:33:00 +02:00
cris net: Properly define functions with no parameters 2012-07-10 23:13:45 -07:00
dsa
ethernet net: calxedaxgmac: fix hang on rx refill 2012-07-10 23:25:47 -07:00
fddi drivers: net: Remove casts to same type 2012-06-06 09:31:33 -07:00
hamradio drivers: net: Remove casts to same type 2012-06-06 09:31:33 -07:00
hippi hippi: fix printk format in rrunner.c 2012-04-16 23:48:38 -04:00
hyperv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-06-06 15:06:41 -07:00
irda drivers: net: Remove casts to same type 2012-06-06 09:31:33 -07:00
phy bcm87xx: fix reg-init comment typo 2012-07-09 00:11:46 -07:00
plip
ppp ppp: avoid false drop_monitor false positives 2012-05-19 02:32:30 -04:00
slip drivers: net: Remove casts to same type 2012-06-06 09:31:33 -07:00
team team: use IFF_LIVE_ADDR_CHANGE priv_flag 2012-06-30 01:08:00 -07:00
usb smsc95xx: support ethtool get_regs 2012-07-09 14:47:52 -07:00
vmxnet3 drivers: net: Remove casts to same type 2012-06-06 09:31:33 -07:00
wan drivers: net: Remove casts to same type 2012-06-06 09:31:33 -07:00
wimax drivers: net: Remove casts to same type 2012-06-06 09:31:33 -07:00
wireless Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2012-06-29 12:42:14 -04:00
xen-netback xen/netback: only non-freed SKB is queued into tx_queue 2012-06-29 00:50:20 -07:00
Kconfig tokenring: delete all remaining driver support 2012-05-15 20:23:16 -04:00
LICENSE.SRC
Makefile tokenring: delete all remaining driver support 2012-05-15 20:23:16 -04:00
Space.c drivers/net: delete all code/drivers depending on CONFIG_MCA 2012-05-17 16:37:41 -04:00
dummy.c dummy: use IFF_LIVE_ADDR_CHANGE priv_flag 2012-06-30 01:08:00 -07:00
eql.c
ifb.c
loopback.c
macvlan.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-05-16 22:17:37 -04:00
macvtap.c macvtap: use prepare_to_wait/finish_wait to ensure mb 2012-06-07 13:18:54 -07:00
mdio.c
mii.c
netconsole.c
rionet.c
sb1000.c
sungem_phy.c
tun.c drivers/net: Convert compare_ether_addr to ether_addr_equal 2012-05-10 23:33:01 -04:00
veth.c
virtio_net.c virtio_net: use IFF_LIVE_ADDR_CHANGE priv_flag 2012-06-30 01:08:00 -07:00
xen-netfront.c xen/netfront: teardown the device before unregistering it. 2012-06-27 01:25:41 -07:00