Skip to content

L
linux
Switch branch/tag
  1. 29 Jun, 2010 1 commit
    • Andy Gospodarek's avatar
      bonding: prevent netpoll over bonded interfaces · c22d7ac8
      Andy Gospodarek authored 
      Support for netpoll over bonded interfaces was added here:

	commit f6dc31a8
	Author: WANG Cong <amwang@redhat.com>
	Date:   Thu May 6 00:48:51 2010 -0700

	    bonding: make bonding support netpoll

but it is bad enough that we should probably just disable netpoll over
bonding until some of the locking logic in the bonding driver is changed
or converted completely to RCU.  Simple actions like changing the active
slave in active-backup mode will hang the box if a high enough printk
debugging level is enabled.

Keeping the old code around will be good for anyone that wants to work
on it (and for after the RCU conversion), so I propose this small patch
rather than ripping it all out.
Signed-off-by: default avatarAndy Gospodarek <andy@greyhouse.net>
Signed-off-by: default avatarJay Vosburgh <fubar@us.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c22d7ac8
  3. 27 Jun, 2010 3 commits
  5. 26 Jun, 2010 8 commits
  7. 25 Jun, 2010 1 commit
  9. 24 Jun, 2010 1 commit
  11. 23 Jun, 2010 4 commits
  13. 22 Jun, 2010 2 commits
  15. 21 Jun, 2010 3 commits
  17. 18 Jun, 2010 1 commit
    • Bob Copeland's avatar
      ath5k: initialize ah->ah_current_channel · b6855772
      Bob Copeland authored 
      ath5k assumes ah_current_channel is always a valid pointer in
several places, but a newly created interface may not have a
channel.  To avoid null pointer dereferences, set it up to point
to the first available channel until later reconfigured.

This fixes the following oops:
$ rmmod ath5k
$ insmod ath5k
$ iw phy0 set distance 11000

BUG: unable to handle kernel NULL pointer dereference at 00000006
IP: [<d0a1ff24>] ath5k_hw_set_coverage_class+0x74/0x1b0 [ath5k]
*pde = 00000000
Oops: 0000 [#1]
last sysfs file: /sys/devices/pci0000:00/0000:00:0e.0/ieee80211/phy0/index
Modules linked in: usbhid option usb_storage usbserial usblp evdev lm90
scx200_acb i2c_algo_bit i2c_dev i2c_core via_rhine ohci_hcd ne2k_pci
8390 leds_alix2 xt_IMQ imq nf_nat_tftp nf_conntrack_tftp nf_nat_irc nf_cc

Pid: 1597, comm: iw Not tainted (2.6.32.14 #8)
EIP: 0060:[<d0a1ff24>] EFLAGS: 00010296 CPU: 0
EIP is at ath5k_hw_set_coverage_class+0x74/0x1b0 [ath5k]
EAX: 000000c2 EBX: 00000000 ECX: ffffffff EDX: c12d2080
ESI: 00000019 EDI: cf8c0000 EBP: d0a30edc ESP: cfa09bf4
  DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
Process iw (pid: 1597, ti=cfa09000 task=cf88a000 task.ti=cfa09000)
Stack:
  d0a34f35 d0a353f8 d0a30edc 000000fe cf8c0000 00000000 1900063d cfa8c9e0
<0> cfa8c9e8 cfa8c0c0 cfa8c000 d0a27f0c 199d84b4 cfa8c200 00000010 d09bfdc7
<0> 00000000 00000000 ffffffff d08e0d28 cf9263c0 00000001 cfa09cc4 00000000
Call Trace:
  [<d0a27f0c>] ? ath5k_hw_attach+0xc8c/0x3c10 [ath5k]
  [<d09bfdc7>] ? __ieee80211_request_smps+0x1347/0x1580 [mac80211]
  [<d08e0d28>] ? nl80211_send_scan_start+0x7b8/0x4520 [cfg80211]
  [<c10f5db9>] ? nla_parse+0x59/0xc0
  [<c11ca8d9>] ? genl_rcv_msg+0x169/0x1a0
  [<c11ca770>] ? genl_rcv_msg+0x0/0x1a0
  [<c11c7e68>] ? netlink_rcv_skb+0x38/0x90
  [<c11c9649>] ? genl_rcv+0x19/0x30
  [<c11c7c03>] ? netlink_unicast+0x1b3/0x220
  [<c11c893e>] ? netlink_sendmsg+0x26e/0x290
  [<c11a409e>] ? sock_sendmsg+0xbe/0xf0
  [<c1032780>] ? autoremove_wake_function+0x0/0x50
  [<c104d846>] ? __alloc_pages_nodemask+0x106/0x530
  [<c1074933>] ? do_lookup+0x53/0x1b0
  [<c10766f9>] ? __link_path_walk+0x9b9/0x9e0
  [<c11acab0>] ? verify_iovec+0x50/0x90
  [<c11a42b1>] ? sys_sendmsg+0x1e1/0x270
  [<c1048e50>] ? find_get_page+0x10/0x50
  [<c104a96f>] ? filemap_fault+0x5f/0x370
  [<c1059159>] ? __do_fault+0x319/0x370
  [<c11a55b4>] ? sys_socketcall+0x244/0x290
  [<c101962c>] ? do_page_fault+0x1ec/0x270
  [<c1019440>] ? do_page_fault+0x0/0x270
  [<c1002ae5>] ? syscall_call+0x7/0xb
Code: 00 b8 fe 00 00 00 b9 f8 53 a3 d0 89 5c 24 14 89 7c 24 10 89 44 24
0c 89 6c 24 08 89 4c 24 04 c7 04 24 35 4f a3 d0 e8 7c 30 60 f0 <0f> b7
43 06 ba 06 00 00 00 a8 10 75 0e 83 e0 20 83 f8 01 19 d2
EIP: [<d0a1ff24>] ath5k_hw_set_coverage_class+0x74/0x1b0 [ath5k] SS:ESP
0068:cfa09bf4
CR2: 0000000000000006
---[ end trace 54f73d6b10ceb87b ]---

Cc: stable@kernel.org
Reported-by: default avatarSteve Brown <sbrown@cortland.com>
Signed-off-by: default avatarBob Copeland <me@bobcopeland.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
      b6855772
  19. 17 Jun, 2010 7 commits
    • stephen hemminger's avatar
      bridge: fdb cleanup runs too often · 25442e06
      stephen hemminger authored 
      It is common in end-node, non STP bridges to set forwarding
delay to zero; which causes the forwarding database cleanup
to run every clock tick. Change to run only as soon as needed
or at next ageing timer interval which ever is sooner.

Use round_jiffies_up macro rather than attempting round up
by changing value.
Signed-off-by: default avatarStephen Hemminger <shemminger@vyatta.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      25442e06
    • FUJITA Tomonori's avatar
      bnx2: fix dma_get_ops compilation breakage · aabef8b2
      FUJITA Tomonori authored 
      This removes dma_get_ops() prefetch optimization in bnx2.

bnx2 uses dma_get_ops() to see if dma_sync_single_for_cpu() is
noop. bnx2 does prefetch if it's noop.

But dma_get_ops() isn't available on all the architectures (only the
architectures that uses dma_map_ops struct have it). Using
dma_get_ops() in drivers leads to compilation breakage on many
architectures.

This patch removes dma_get_ops() and changes bnx2 to do prefetch on
all the architectures. This adds useless prefetch on non-coherent
architectures but this is harmless. It is also unlikely to cause the
performance drop.

[ Remove now unused local variable 'pdev' -DaveM ]
Signed-off-by: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: default avatarMichael Chan <mchan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      aabef8b2
    • Sergey Matyukevich's avatar
      ucc_geth: fix for RX skb buffers recycling · db176edc
      Sergey Matyukevich authored 
      This patch implements a proper modification of RX skb buffers before
recycling. Adjusting only skb->data is not enough because after that
skb->tail and skb->len become incorrect.
Signed-off-by: default avatarSergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      db176edc
    • Ken Kawasaki's avatar
      pcnet_cs: add new id (TOSHIBA Modem/LAN Card) · 8b1d920f
      Ken Kawasaki authored 
      pcnet_cs:
serial_cs:
    add new id (TOSHIBA Modem/LAN Card)
Signed-off-by: default avatarKen Kawasaki <ken_kawasaki@spring.nifty.jp>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8b1d920f
    • Anton Vorontsov's avatar
      gianfar: Fix oversized packets handling · 63b88b90
      Anton Vorontsov authored 
      Issuing the following command on host:

$ ifconfig eth2 mtu 1600 ; ping 10.0.0.27 -s 1485 -c 1

Makes some boards (tested with MPC8315 rev 1.1 and MPC8313 rev 1.0)
oops like this:

  skb_over_panic: text:c0195914 len:1537 put:1537 head:c79e4800 data:c79e4880 tail:0xc79e4e81 end:0xc79e4e80 dev:eth1
  ------------[ cut here ]------------
  kernel BUG at net/core/skbuff.c:127!
  Oops: Exception in kernel mode, sig: 5 [#1]
  MPC831x RDB
  last sysfs file: /sys/kernel/uevent_seqnum
  Modules linked in:
  NIP: c01c1840 LR: c01c1840 CTR: c016d918
  [...]
  NIP [c01c1840] skb_over_panic+0x48/0x5c
  LR [c01c1840] skb_over_panic+0x48/0x5c
  Call Trace:
  [c0339d50] [c01c1840] skb_over_panic+0x48/0x5c (unreliable)
  [c0339d60] [c01c3020] skb_put+0x5c/0x60
  [c0339d70] [c0195914] gfar_clean_rx_ring+0x25c/0x3d0
  [c0339dc0] [c01976e8] gfar_poll+0x170/0x1bc

Dumped buffer descriptors showed that eTSEC's length/truncation
logic sometimes passes oversized packets, i.e. for the above ICMP
packet the following two buffer descriptors may become ready:

  status=1400 length=1536
  status=1800 length=1541

So, it seems that gianfar actually receives the whole big frame,
and it tries to place the packet into two BDs. This situation
confuses the driver, and so the skb_put() sanity check fails.

This patch fixes the issue by adding an appropriate check, i.e.
the driver should not try to process frames with buffer
descriptor's length over rx_buffer_size (i.e. maxfrm and mrblr).

Note that sometimes eTSEC works correctly, i.e. in the second
(last) buffer descriptor bits 'truncated' and 'crcerr' are set,
and so there's no oops. Though I couldn't find any logic when
it works correctly and when not.
Signed-off-by: default avatarAnton Vorontsov <avorontsov@mvista.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      63b88b90
    • Jan-Bernd Themann's avatar
      ehea: Fix kernel deadlock in DLPAR-mem processing · 099473c1
      Jan-Bernd Themann authored 
      Port reset operations and memory add/remove operations need to
be serialized to avoid a kernel deadlock. The deadlock is caused
by calling the napi_disable() function twice.
Therefore we have to employ the dlpar_mem_lock in the ehea_reset_port
function as well
Signed-off-by: default avatarJan-Bernd Themann <themann@de.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      099473c1
    • Jan-Bernd Themann's avatar
      ehea: fix delayed packet processing · a91fb143
      Jan-Bernd Themann authored 
      In the eHEA poll function an rmb() is required. Without that some packets
on the receive queue are not seen and thus delayed until the next interrupt
is handled for the same receive queue.
Signed-off-by: default avatarJan-Bernd Themann <themann@de.ibm.com>
Signed-off-by: default avatarJay Vosburgh <fubar@us.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a91fb143
  21. 16 Jun, 2010 9 commits
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7