Commit Graph

299821 Commits

Author SHA1 Message Date
James Chapman c9be48dc8b l2tp: don't overwrite source address in l2tp_ip_bind()
Applications using L2TP/IP sockets want to be able to bind() an L2TP/IP
socket to set the local tunnel id while leaving the auto-assigned source
address alone. So if no source address is supplied, don't overwrite
the address already stored in the socket.

Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13 11:01:44 -04:00
James Chapman d1f224ae18 l2tp: fix refcount leak in l2tp_ip sockets
The l2tp_ip socket close handler does not update the module refcount
correctly which prevents module unload after the first bind() call on
an L2TPv3 IP encapulation socket.

Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13 11:01:44 -04:00
Torsten Kaiser 31304165ff net: Fix misplaced parenthesis in virtio_net.c
Commit 2e57b79cce misplaced its
parenthesis and now tx_fifo_errors will only be incremented if an
ENOMEM error is not written to the syslog.

Correct the parenthesis and indentation to the original goal of
counting all non ENOMEM errors and ratelimiting only the messages.

Signed-of-by: Torsten Kaiser <just.for.lkml@googlemail.com>

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13 11:01:44 -04:00
Julia Lawall 89eb06f11c net/key/af_key.c: add missing kfree_skb
At the point of this error-handling code, alloc_skb has succeded, so free
the resulting skb by jumping to the err label.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13 11:01:44 -04:00
Eric W. Biederman 03478756b1 phonet: Sort out initiailziation and cleanup code.
Recently an oops was reported in phonet if there was a failure during
network namespace creation.

[  163.733755] ------------[ cut here ]------------
[  163.734501] kernel BUG at include/net/netns/generic.h:45!
[  163.734501] invalid opcode: 0000 [#1] PREEMPT SMP
[  163.734501] CPU 2
[  163.734501] Pid: 19145, comm: trinity Tainted: G        W 3.4.0-rc1-next-20120405-sasha-dirty #57
[  163.734501] RIP: 0010:[<ffffffff824d6062>]  [<ffffffff824d6062>] phonet_pernet+0x182/0x1a0
[  163.734501] RSP: 0018:ffff8800674d5ca8  EFLAGS: 00010246
[  163.734501] RAX: 000000003fffffff RBX: 0000000000000000 RCX: ffff8800678c88d8
[  163.734501] RDX: 00000000003f4000 RSI: ffff8800678c8910 RDI: 0000000000000282
[  163.734501] RBP: ffff8800674d5cc8 R08: 0000000000000000 R09: 0000000000000000
[  163.734501] R10: 0000000000000000 R11: 0000000000000000 R12: ffff880068bec920
[  163.734501] R13: ffffffff836b90c0 R14: 0000000000000000 R15: 0000000000000000
[  163.734501] FS:  00007f055e8de700(0000) GS:ffff88007d000000(0000) knlGS:0000000000000000
[  163.734501] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  163.734501] CR2: 00007f055e6bb518 CR3: 0000000070c16000 CR4: 00000000000406e0
[  163.734501] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  163.734501] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  163.734501] Process trinity (pid: 19145, threadinfo ffff8800674d4000, task ffff8800678c8000)
[  163.734501] Stack:
[  163.734501]  ffffffff824d5f00 ffffffff810e2ec1 ffff880067ae0000 00000000ffffffd4
[  163.734501]  ffff8800674d5cf8 ffffffff824d667a ffff880067ae0000 00000000ffffffd4
[  163.734501]  ffffffff836b90c0 0000000000000000 ffff8800674d5d18 ffffffff824d707d
[  163.734501] Call Trace:
[  163.734501]  [<ffffffff824d5f00>] ? phonet_pernet+0x20/0x1a0
[  163.734501]  [<ffffffff810e2ec1>] ? get_parent_ip+0x11/0x50
[  163.734501]  [<ffffffff824d667a>] phonet_device_destroy+0x1a/0x100
[  163.734501]  [<ffffffff824d707d>] phonet_device_notify+0x3d/0x50
[  163.734501]  [<ffffffff810dd96e>] notifier_call_chain+0xee/0x130
[  163.734501]  [<ffffffff810dd9d1>] raw_notifier_call_chain+0x11/0x20
[  163.734501]  [<ffffffff821cce12>] call_netdevice_notifiers+0x52/0x60
[  163.734501]  [<ffffffff821cd235>] rollback_registered_many+0x185/0x270
[  163.734501]  [<ffffffff821cd334>] unregister_netdevice_many+0x14/0x60
[  163.734501]  [<ffffffff823123e3>] ipip_exit_net+0x1b3/0x1d0
[  163.734501]  [<ffffffff82312230>] ? ipip_rcv+0x420/0x420
[  163.734501]  [<ffffffff821c8515>] ops_exit_list+0x35/0x70
[  163.734501]  [<ffffffff821c911b>] setup_net+0xab/0xe0
[  163.734501]  [<ffffffff821c9416>] copy_net_ns+0x76/0x100
[  163.734501]  [<ffffffff810dc92b>] create_new_namespaces+0xfb/0x190
[  163.734501]  [<ffffffff810dca21>] unshare_nsproxy_namespaces+0x61/0x80
[  163.734501]  [<ffffffff810afd1f>] sys_unshare+0xff/0x290
[  163.734501]  [<ffffffff8187622e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[  163.734501]  [<ffffffff82665539>] system_call_fastpath+0x16/0x1b
[  163.734501] Code: e0 c3 fe 66 0f 1f 44 00 00 48 c7 c2 40 60 4d 82 be 01 00 00 00 48 c7 c7 80 d1 23 83 e8 48 2a c4 fe e8 73 06 c8 fe 48 85 db 75 0e <0f> 0b 0f 1f 40 00 eb fe 66 0f 1f 44 00 00 48 83 c4 10 48 89 d8
[  163.734501] RIP  [<ffffffff824d6062>] phonet_pernet+0x182/0x1a0
[  163.734501]  RSP <ffff8800674d5ca8>
[  163.861289] ---[ end trace fb5615826c548066 ]---

After investigation it turns out there were two issues.
1) Phonet was not implementing network devices but was using register_pernet_device
   instead of register_pernet_subsys.

   This was allowing there to be cases when phonenet was not initialized and
   the phonet net_generic was not set for a network namespace when network
   device events were being reported on the netdevice_notifier for a network
   namespace leading to the oops above.

2) phonet_exit_net was implementing a confusing and special case of handling all
   network devices from going away that it was hard to see was correct, and would
   only occur when the phonet module was removed.

   Now that unregister_netdevice_notifier has been modified to synthesize unregistration
   events for the network devices that are extant when called this confusing special
   case in phonet_exit_net is no longer needed.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13 11:01:43 -04:00
Eric W. Biederman 7d3d43dab4 net: In unregister_netdevice_notifier unregister the netdevices.
We already synthesize events in register_netdevice_notifier and synthesizing
events in unregister_netdevice_notifier allows to us remove the need for
special case cleanup code.

This change should be safe as it adds no new cases for existing callers
of unregiser_netdevice_notifier to handle.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13 11:01:43 -04:00
David S. Miller 816a7854d5 Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next 2012-04-12 20:12:31 -04:00
David S. Miller 011e3c6325 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-12 19:41:23 -04:00
Eldad Zack c1412fce7e net/ipv6/exthdrs.c: Strict PadN option checking
Added strict checking of PadN, as PadN can be used to increase header
size and thus push the protocol header into the 2nd fragment.

PadN is used to align the options within the Hop-by-Hop or
Destination Options header to 64-bit boundaries. The maximum valid
size is thus 7 bytes.
RFC 4942 recommends to actively check the "payload" itself and
ensure that it contains only zeroes.

See also RFC 4942 section 2.1.9.5.

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-12 17:36:44 -04:00
Wey-Yi Guy ef213d6d7e iwlwifi: change the default P2P support to "Yes"
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:24:35 -07:00
Wey-Yi Guy 8347deb3d7 iwlwifi: more generic name for bluetooth command
Instead of hardcode 6000 and 2000, use more generic name

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:24:25 -07:00
Meenakshi Venkataraman 8fb96d6e17 iwlwifi: move scan related declarations out of iwl-core.h
Move these as part of iwl-core.h cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:24:11 -07:00
Meenakshi Venkataraman 1dfdbdd291 iwlwifi: move utility functions out of iwl-core.h
Move these functions to iwl-agn.h as part of
iwl-core.h cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:23:59 -07:00
Meenakshi Venkataraman f32cadfc0d iwlwifi: move iwl_bcast_addr to iwl-agn-sta.c
Move this as part of iwl-core.c cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:23:48 -07:00
Meenakshi Venkataraman 66cd9e39c6 iwlwifi: move iwl_force_rf_reset to iwl-agn-rx.c
Move this function as part of iwl-core.c cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:23:33 -07:00
Meenakshi Venkataraman 1591129d54 iwlwifi: move iwl_send_statistics_request to iwl-agn.c
Move this as part of iwl-core.c cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:23:21 -07:00
Meenakshi Venkataraman 4d323acdd0 iwlwifi: move iwl_print_rx_config_cmd to iwl-agn-rxon.c
Move this as part of iwl-core.c cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:23:08 -07:00
Meenakshi Venkataraman e4c52ab4d2 iwlwifi: move iwl_send_bt_config and mark it static
Move this as part of iwl-core.c cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:22:55 -07:00
Meenakshi Venkataraman e6a62a6e5f iwlwifi: move iwl_set_tx_power and make it static
This function is used only in iwl-agn-rxon.c,
move it there and mark it static.

Move this function as part of iwl-core.c
cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:22:41 -07:00
Meenakshi Venkataraman 193219cf0f iwlwifi: move iwlagn_fw_error to iwl-agn.c
Move this as part of iwl-core.c cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:22:26 -07:00
Meenakshi Venkataraman bedec3a67d iwlwifi: move iwl_chswitch_done to iwl-mac80211.c
Move this as part of iwl-core.c cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:22:11 -07:00
Meenakshi Venkataraman aecd44f00f iwlwifi: move iwl_set_rate to iwl-agn-rxon.c
Move this as part of  iwl-core.c cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:21:58 -07:00
Meenakshi Venkataraman 47042ac285 iwlwifi: move iwl_connection_init_rx_config to iwl-agn-rxon.c
Move this as part of iwl-core.c cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:21:42 -07:00
Meenakshi Venkataraman 50319f74f5 iwlwifi: move iwl_set_flags_for_band to iwl-agn-rxon.c
Moving this as part of iwl-core.c cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:21:30 -07:00
Meenakshi Venkataraman fedfa87a52 iwlwifi: move iwl_set_rxon_channel to iwl-agn-rxon.c
Moving this as part of iwl-core.c cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:21:17 -07:00
Meenakshi Venkataraman dd64173e37 iwlwifi: move iwl_set_rxon_ht to iwl-agn-rxon.c
Moving this as part of iwl-core.c cleanup.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:21:02 -07:00
Meenakshi Venkataraman 5edc565d60 iwlwifi: move iwl_is_ht40_tx_allowed out of iwl-core.c
This is really something determined by
station parameters, so move it to
iwl-agn-sta.c.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:19:39 -07:00
Meenakshi Venkataraman a297d95d53 iwlwifi: move iwl_set_hw_rfkill_state and mark it static
iwl_set_hw_rfkill_state is used only in
iwl-agn.c. Move it there and mark it static.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:19:26 -07:00
Meenakshi Venkataraman ae625db3ed iwlwifi: move iwl_free_skb and mark it static
iwl_free_skb is used only in iwl-agn.c, move
it there and mark it static.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:19:05 -07:00
Meenakshi Venkataraman e381b21432 iwlwifi: move channel switch related functions
With the creation of iwl-agn-devices.c,
iwl-core.c can be cleaned up a bit more by
moving beacon time related functions from
iwl-core.c to iwl-agn-devices.c

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:18:37 -07:00
Johannes Berg 3ac40edadc iwlwifi: calculate active legacy rates per station
Not all stations are guaranteed to have the same
active (available) legacy rates, so calculate them
on rate control init instead of hard-coding them
based on our own available rates. I have no idea
why that was done here before.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:18:19 -07:00
Johannes Berg 4dcba6d3c5 iwlwifi: make iwl_sta_fill_lq static
It's only used in a single place.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:18:03 -07:00
Meenakshi Venkataraman d1888db588 iwlwifi: move iwlagn_hw_valid_rtc_data_addr prototype
Since this function is now used only by
op_mode, remove it from iwl-shared.h and move
it to iwl-agn.h.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2012-04-12 14:17:46 -07:00
Linus Torvalds ecca5c3acc Merge branch 'akpm' (Andrew's patch-bomb)
Merge fixes from Andrew Morton.

* emailed from Andrew Morton <akpm@linux-foundation.org>: (14 patches)
  panic: fix stack dump print on direct call to panic()
  drivers/rtc/rtc-pl031.c: enable clock on all ST variants
  Revert "mm: vmscan: fix misused nr_reclaimed in shrink_mem_cgroup_zone()"
  hugetlb: fix race condition in hugetlb_fault()
  drivers/rtc/rtc-twl.c: use static register while reading time
  drivers/rtc/rtc-s3c.c: add placeholder for driver private data
  drivers/rtc/rtc-s3c.c: fix compilation error
  MAINTAINERS: add PCDP console maintainer
  memcg: do not open code accesses to res_counter members
  drivers/rtc/rtc-efi.c: fix section mismatch warning
  drivers/rtc/rtc-r9701.c: reset registers if invalid values are detected
  drivers/char/random.c: fix boot id uniqueness race
  memcg: fix broken boolen expression
  memcg: fix up documentation on global LRU
2012-04-12 14:15:21 -07:00
Wey-Yi Guy 586c7ecc78 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into wireless-next 2012-04-12 14:07:13 -07:00
Linus Torvalds 174808af90 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix bluetooth userland regression reported by Keith Packard, from
    Gustavo Padovan.

 2) Revert ath9k PS idle change, from Sujith Manoharan.

 3) Correct default TCP memory limits (again), from Eric Dumazet.

 4) Fix tcp_rcv_rtt_update() accidental use of unscaled RTT, from Neal
    Cardwell.

 5) We made a facility for layers like wireless to say how much tailroom
    they need in the SKB for link layer stuff such as wireless
    encryption etc., but TCP works hard to fill every SKB out to the end
    defeating this specification.

    This leads to every TCP packet getting reallocated by the wireless
    code in order to have the right amount of tailroom available.

    Fix TCP to only fill SKBs out to the real amount of data area it
    asked for during the allocation, this way it won't eat into the
    slack added for the device's tailroom needs.

    Reported by Marc Merlin and fixed by Eric Dumazet.

 6) Leaks, endian bugs, and new device IDs in bluetooth from Santosh
    Nayak, João Paulo Rechi Vita, Cho, Yu-Chen, Andrei Emeltchenko,
    AceLan Kao, and Andrei Emeltchenko.

 7) OOPS on tty_close fix in bluetooth's hci_ldisc from Johan Hovold.

 8) netfilter erroneously scales TCP window twice, fix from Changli Gao.

 9) Memleak fix in wext-core from Julia Lawall.

10) Consistently handle invalid TCP packets in ipv4 vs.  ipv6 conntrack,
    from Jozsef Kadlecsik.

11) Validate IP header length properly in netfilter conntrack's
    ipv4_get_l4proto().

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (39 commits)
  NFC: Fix the LLCP Tx fragmentation loop
  rtlwifi: Add missing DMA buffer unmapping for PCI drivers
  rtlwifi: Preallocate USB read buffers and eliminate kalloc in read routine
  tcp: avoid order-1 allocations on wifi and tx path
  net: allow pskb_expand_head() to get maximum tailroom
  bridge: Do not send queries on multicast group leaves
  MAINTAINERS: Mark NATSEMI driver as orphan'd.
  tcp: fix tcp_rcv_rtt_update() use of an unscaled RTT sample
  tcp: restore correct limit
  Revert "ath9k: fix going to full-sleep on PS idle"
  rt2x00: Fix rfkill_polling register function.
  bcma: fix build error on MIPS; implicit pcibios_enable_device
  netfilter: nf_conntrack: fix incorrect logic in nf_conntrack_init_net
  netfilter: nf_ct_ipv4: packets with wrong ihl are invalid
  netfilter: nf_ct_ipv4: handle invalid IPv4 and IPv6 packets consistently
  net/wireless/wext-core.c: add missing kfree
  rtlwifi: Fix oops on rate-control failure
  mac80211: Convert WARN_ON to WARN_ON_ONCE
  rtlwifi: rtl8192de: Fix firmware initialization
  nl80211: ensure interface is up in various APIs
  ...
2012-04-12 14:04:33 -07:00
Linus Torvalds 778c2dee6f Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "Mostly exynos and intel.

  Intel has 3 regression fixers (more info in intel merge commit), along
  with some other make hw work fixes, exynos has some cleanups and an
  ioctl fix.

  A couple of radeon fixes, couple of build fixes, and a savage
  userspace interface possible overflow fix."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (23 commits)
  drm/exynos: fixed exynos broken ioctl
  drm/i915: clear fencing tracking state when retiring requests
  drm/exynos: fix to pointer manager member of struct exynos_drm_subdrv
  drm/exynos: fix struct for operation callback functions to driver name
  drm/exynos: use define instead of default_win member in struct mixer_context
  drm/exynos: rename s/HDMI_OVERLAY_NUMBER/MIXER_WIN_NR
  drm/exynos: remove unused codes in hdmi and mixer
  drm/exynos: remove unnecessary type conversion of hdmi and mixer
  drm/i915: make rc6 module parameter read-only
  drm/i915: implement ColorBlt w/a
  drm/i915/ringbuffer: Exclude last 2 cachlines of ring on 845g
  Revert "drm/i915: reenable gmbus on gen3+ again"
  drm/radeon: only add the mm i2c bus if the hw_i2c module param is set
  vgaarb.h: fix build warnings
  drm/i915: properly compute dp dithering for user-created modes
  drm/radeon/kms: fix DVO setup on some r4xx chips
  drm/savage: fix integer overflows in savage_bci_cmdbuf()
  drm/radeon: replace udelay with mdelay for long timeouts
  drm/i915: Finish any pending operations on the framebuffer before disabling
  drm/i915: Removed IVB forced enable of sprite dest key.
  ...
2012-04-12 13:58:23 -07:00
Jeffrin Jose 46ba5b23c3 net: Fixed coding style issues relating to braces.
Fixed coding style issues in net/core/utils.c
in relation with braces placement.

Signed-off-by: Jeffrin Jose <ahiliation@yahoo.co.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-12 16:35:48 -04:00
Eldad Zack 6fdbd1648b net/ipv6/ipv6_sockglue.c: Removed redundant extern
extern int sysctl_mld_max_msf is already defined in linux/ipv6.h.

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-12 16:14:47 -04:00
Linus Torvalds e42bd6e4a6 A few more fixes for md in 3.4
Two are tagged for -stable. They can cause an oops, but very rarely.
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Merge tag 'md-3.4-fixes' of git://neil.brown.name/md

Pull a few more fixes for md from NeilBrown:
 "Two are tagged for -stable.  They can cause an oops, but very rarely."

* tag 'md-3.4-fixes' of git://neil.brown.name/md:
  md/bitmap: prevent bitmap_daemon_work running while initialising bitmap
  md/raid1,raid10: Fix calculation of 'vcnt' when processing error recovery.
  MD: Bitmap version cleanup.
2012-04-12 13:12:56 -07:00
Jason Wessel 026ee1f66a panic: fix stack dump print on direct call to panic()
Commit 6e6f0a1f0f ("panic: don't print redundant backtraces on oops")
causes a regression where no stack trace will be printed at all for the
case where kernel code calls panic() directly while not processing an
oops, and of course there are 100's of instances of this type of call.

The original commit executed the check (!oops_in_progress), but this will
always be false because just before the dump_stack() there is a call to
bust_spinlocks(1), which does the following:

  void __attribute__((weak)) bust_spinlocks(int yes)
  {
	if (yes) {
		++oops_in_progress;

The proper way to resolve the problem that original commit tried to
solve is to avoid printing a stack dump from panic() when the either of
the following conditions is true:

  1) TAINT_DIE has been set (this is done by oops_end())
     This indicates and oops has already been printed.
  2) oops_in_progress > 1
     This guards against the rare case where panic() is invoked
     a second time, or in between oops_begin() and oops_end()

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: <stable@vger.kernel.org>	[3.3+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-12 13:12:12 -07:00
Linus Walleij 2f39721683 drivers/rtc/rtc-pl031.c: enable clock on all ST variants
The ST variants of the PL031 all require bit 26 in the control register
to be set before they work properly.  Discovered this when testing on
the Nomadik board where it would suprisingly just stand still.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Cc: Alessandro Rubini <rubini@unipv.it>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-12 13:12:12 -07:00
Ying Han 41c9308812 Revert "mm: vmscan: fix misused nr_reclaimed in shrink_mem_cgroup_zone()"
This reverts commit c38446cc65.

Before the commit, the code makes senses to me but not after the commit.
The "nr_reclaimed" is the number of pages reclaimed by scanning through
the memcg's lru lists.  The "nr_to_reclaim" is the target value for the
whole function.  For example, we like to early break the reclaim if
reclaimed 32 pages under direct reclaim (not DEF_PRIORITY).

After the reverted commit, the target "nr_to_reclaim" is decremented each
time by "nr_reclaimed" but we still use it to compare the "nr_reclaimed".
It just doesn't make sense to me...

Signed-off-by: Ying Han <yinghan@google.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-12 13:12:12 -07:00
Chris Metcalf 66aebce747 hugetlb: fix race condition in hugetlb_fault()
The race is as follows:

Suppose a multi-threaded task forks a new process (on cpu A), thus
bumping up the ref count on all the pages.  While the fork is occurring
(and thus we have marked all the PTEs as read-only), another thread in
the original process (on cpu B) tries to write to a huge page, taking an
access violation from the write-protect and calling hugetlb_cow().  Now,
suppose the fork() fails.  It will undo the COW and decrement the ref
count on the pages, so the ref count on the huge page drops back to 1.
Meanwhile hugetlb_cow() also decrements the ref count by one on the
original page, since the original address space doesn't need it any
more, having copied a new page to replace the original page.  This
leaves the ref count at zero, and when we call unlock_page(), we panic.

	fork on CPU A				fault on CPU B
	=============				==============
	...
	down_write(&parent->mmap_sem);
	down_write_nested(&child->mmap_sem);
	...
	while duplicating vmas
		if error
			break;
	...
	up_write(&child->mmap_sem);
	up_write(&parent->mmap_sem);		...
						down_read(&parent->mmap_sem);
						...
						lock_page(page);
						handle COW
						page_mapcount(old_page) == 2
						alloc and prepare new_page
	...
	handle error
	page_remove_rmap(page);
	put_page(page);
	...
						fold new_page into pte
						page_remove_rmap(page);
						put_page(page);
						...
				oops ==>	unlock_page(page);
						up_read(&parent->mmap_sem);

The solution is to take an extra reference to the page while we are
holding the lock on it.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: Hillf Danton <dhillf@gmail.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-12 13:12:12 -07:00
Konstantin Shlyakhovoy f3ec434c69 drivers/rtc/rtc-twl.c: use static register while reading time
RTC stores time and date in several registers.  Due to the fact that
these registers can't be read instantaneously, there is a chance that
reading from counting registers gives an error of one minute, one hour,
one day, etc.

To address this issue, the RTC has hardware support to copy the RTC
counting registers to static shadowed registers.  The current
implementation does not use this feature, and in a stress test, we can
reproduce this error at a rate of around two times per 300000 readings.

Fix the implementation to ensure that the right snapshot of time is
captured.

Signed-off-by: Konstantin Shlyakhovoy <x0155534@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: linux-omap <linux-omap@vger.kernel.org>
Acked-by: Mykola Oleksiienko <x0174904@ti.com>
Acked-by: Oleksandr Dmytryshyn <oleksandr.dmytryshyn@ti.com>
Acked-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-12 13:12:12 -07:00
Tushar Behera c3cba9281b drivers/rtc/rtc-s3c.c: add placeholder for driver private data
Driver data field is a pointer, hence assigning that to an integer results
in compilation warnings.

Fixes following compilation warnings:

  drivers/rtc/rtc-s3c.c: In function `s3c_rtc_get_driver_data':
  drivers/rtc/rtc-s3c.c:452:3: warning: return makes integer from pointer without a cast [enabled by default]
  drivers/rtc/rtc-s3c.c: At top level:
  drivers/rtc/rtc-s3c.c:674:3: warning: initialization makes pointer from integer without a cast [enabled by default]
  drivers/rtc/rtc-s3c.c:674:3: warning: (near initialization for `s3c_rtc_dt_match[1].data') [enabled by default]
  drivers/rtc/rtc-s3c.c:677:3: warning: initialization makes pointer from integer without a cast [enabled by default]
  drivers/rtc/rtc-s3c.c:677:3: warning: (near initialization for `s3c_rtc_dt_match[2].data') [enabled by default]
  drivers/rtc/rtc-s3c.c:680:3: warning: initialization makes pointer from integer without a cast [enabled by default]
  drivers/rtc/rtc-s3c.c:680:3: warning: (near initialization for `s3c_rtc_dt_match[3].data') [enabled by default]

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-12 13:12:12 -07:00
Tushar Behera cd1e6f9e53 drivers/rtc/rtc-s3c.c: fix compilation error
Fix this error:

  drivers/rtc/rtc-s3c.c: At top level:
  drivers/rtc/rtc-s3c.c:671:3: error: request for member `data' in something not a structure or union
  drivers/rtc/rtc-s3c.c:674:3: error: request for member `data' in something not a structure or union
  drivers/rtc/rtc-s3c.c:677:3: error: request for member `data' in something not a structure or union
  drivers/rtc/rtc-s3c.c:680:3: error: request for member `data' in something not a structure or union

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-12 13:12:12 -07:00
Khalid Aziz 3971dae51d MAINTAINERS: add PCDP console maintainer
Add missing maintainer info for PCDP console code.

Signed-off-by: Khalid Aziz <khalid.aziz@hp.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-12 13:12:12 -07:00
Glauber Costa 569530fb1b memcg: do not open code accesses to res_counter members
We should use the accessor res_counter_read_u64 for that.

Although a purely cosmetic change is sometimes better delayed, to avoid
conflicting with other people's work, we are starting to have people
touching this code as well, and reproducing the open code behavior
because that's the standard =)

Time to fix it, then.

Signed-off-by: Glauber Costa <glommer@parallels.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-12 13:12:12 -07:00
Jan Beulich 32050017cf drivers/rtc/rtc-efi.c: fix section mismatch warning
efi_rtc_init() uses platform_driver_probe(), so there's no need to also
set efi_rtc_driver's probe member (as it won't be used anyway).  This
fixes a modpost section mismatch warning (as efi_rtc_probe() validly is
__init).

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-12 13:12:12 -07:00