1. 12 Aug, 2015 7 commits
    • Tomas Winkler's avatar
      mmc: block: Add missing mmc_blk_put() in power_ro_lock_show() · 1f7d2349
      Tomas Winkler authored
      commit 9098f84c upstream.
      
      Enclosing mmc_blk_put() is missing in power_ro_lock_show() sysfs handler,
      let's add it.
      
      Fixes: add710ea ("mmc: boot partition ro lock support")
      Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
      Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      1f7d2349
    • Edward Hyunkoo Jee's avatar
      inet: frags: fix defragmented packet's IP header for af_packet · f65e2502
      Edward Hyunkoo Jee authored
      commit 0848f642 upstream.
      
      When ip_frag_queue() computes positions, it assumes that the passed
      sk_buff does not contain L2 headers.
      
      However, when PACKET_FANOUT_FLAG_DEFRAG is used, IP reassembly
      functions can be called on outgoing packets that contain L2 headers.
      
      Also, IPv4 checksum is not corrected after reassembly.
      
      Fixes: 7736d33f ("packet: Add pre-defragmentation support for ipv4 fanouts.")
      Signed-off-by: default avatarEdward Hyunkoo Jee <edjee@google.com>
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Cc: Willem de Bruijn <willemb@google.com>
      Cc: Jerry Chu <hkchu@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      [ luis: backported to 3.16: adjusted context ]
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      f65e2502
    • Nikolay Aleksandrov's avatar
      bonding: correctly handle bonding type change on enslave failure · cda1c86b
      Nikolay Aleksandrov authored
      commit 7d5cd2ce upstream.
      
      If the bond is enslaving a device with different type it will be setup
      by it, but if after being setup the enslave fails the bond doesn't
      switch back its type and also keeps pointers to foreign structures that can
      be long gone. Thus revert back any type changes if the enslave failed and
      the bond had to change its type.
      Example:
       Before patch:
      $ echo lo > bond0/bonding/slaves
      -bash: echo: write error: Cannot assign requested address
      $ ip l sh bond0
      20: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN
      mode DEFAULT group default
          link/loopback 16:54:78:34:bd:41 brd 00:00:00:00:00:00
      $ echo +eth1 > bond0/bonding/slaves
      $ ip l sh bond0
      20: bond0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode
      DEFAULT group default qlen 1000
          link/ether 52:54:00:3f:47:69 brd ff:ff:ff:ff:ff:ff
      (notice the MASTER flag is gone)
      
       After patch:
      $ echo lo > bond0/bonding/slaves
      -bash: echo: write error: Cannot assign requested address
      $ ip l sh bond0
      21: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN
      mode DEFAULT group default qlen 1000
          link/ether 6e:66:94:f6:07:fc brd ff:ff:ff:ff:ff:ff
      $ echo +eth1 > bond0/bonding/slaves
      $ ip l sh bond0
      21: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN
      mode DEFAULT group default qlen 1000
          link/ether 52:54:00:3f:47:69 brd ff:ff:ff:ff:ff:ff
      Signed-off-by: default avatarNikolay Aleksandrov <nikolay@cumulusnetworks.com>
      Fixes: e36b9d16 ("bonding: clean muticast addresses when device changes type")
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      cda1c86b
    • Nikolay Aleksandrov's avatar
      bonding: fix destruction of bond with devices different from arphrd_ether · cc065253
      Nikolay Aleksandrov authored
      commit 06f6d109 upstream.
      
      When the bonding is being unloaded and the netdevice notifier is
      unregistered it executes NETDEV_UNREGISTER for each device which should
      remove the bond's proc entry but if the device enslaved is not of
      ARPHRD_ETHER type and is in front of the bonding, it may execute
      bond_release_and_destroy() first which would release the last slave and
      destroy the bond device leaving the proc entry and thus we will get the
      following error (with dynamic debug on for bond_netdev_event to see the
      events order):
      [  908.963051] eql: event: 9
      [  908.963052] eql: IFF_SLAVE
      [  908.963054] eql: event: 2
      [  908.963056] eql: IFF_SLAVE
      [  908.963058] eql: event: 6
      [  908.963059] eql: IFF_SLAVE
      [  908.963110] bond0: Releasing active interface eql
      [  908.976168] bond0: Destroying bond bond0
      [  908.976266] bond0 (unregistering): Released all slaves
      [  908.984097] ------------[ cut here ]------------
      [  908.984107] WARNING: CPU: 0 PID: 1787 at fs/proc/generic.c:575
      remove_proc_entry+0x112/0x160()
      [  908.984110] remove_proc_entry: removing non-empty directory
      'net/bonding', leaking at least 'bond0'
      [  908.984111] Modules linked in: bonding(-) eql(O) 9p nfsd auth_rpcgss
      oid_registry nfs_acl nfs lockd grace fscache sunrpc crct10dif_pclmul
      crc32_pclmul crc32c_intel ghash_clmulni_intel ppdev qxl drm_kms_helper
      snd_hda_codec_generic aesni_intel ttm aes_x86_64 glue_helper pcspkr lrw
      gf128mul ablk_helper cryptd snd_hda_intel virtio_console snd_hda_codec
      psmouse serio_raw snd_hwdep snd_hda_core 9pnet_virtio 9pnet evdev joydev
      drm virtio_balloon snd_pcm snd_timer snd soundcore i2c_piix4 i2c_core
      pvpanic acpi_cpufreq parport_pc parport processor thermal_sys button
      autofs4 ext4 crc16 mbcache jbd2 hid_generic usbhid hid sg sr_mod cdrom
      ata_generic virtio_blk virtio_net floppy ata_piix e1000 libata ehci_pci
      virtio_pci scsi_mod uhci_hcd ehci_hcd virtio_ring virtio usbcore
      usb_common [last unloaded: bonding]
      
      [  908.984168] CPU: 0 PID: 1787 Comm: rmmod Tainted: G        W  O
      4.2.0-rc2+ #8
      [  908.984170] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
      [  908.984172]  0000000000000000 ffffffff81732d41 ffffffff81525b34
      ffff8800358dfda8
      [  908.984175]  ffffffff8106c521 ffff88003595af78 ffff88003595af40
      ffff88003e3a4280
      [  908.984178]  ffffffffa058d040 0000000000000000 ffffffff8106c59a
      ffffffff8172ebd0
      [  908.984181] Call Trace:
      [  908.984188]  [<ffffffff81525b34>] ? dump_stack+0x40/0x50
      [  908.984193]  [<ffffffff8106c521>] ? warn_slowpath_common+0x81/0xb0
      [  908.984196]  [<ffffffff8106c59a>] ? warn_slowpath_fmt+0x4a/0x50
      [  908.984199]  [<ffffffff81218352>] ? remove_proc_entry+0x112/0x160
      [  908.984205]  [<ffffffffa05850e6>] ? bond_destroy_proc_dir+0x26/0x30
      [bonding]
      [  908.984208]  [<ffffffffa057540e>] ? bond_net_exit+0x8e/0xa0 [bonding]
      [  908.984217]  [<ffffffff8142f407>] ? ops_exit_list.isra.4+0x37/0x70
      [  908.984225]  [<ffffffff8142f52d>] ?
      unregister_pernet_operations+0x8d/0xd0
      [  908.984228]  [<ffffffff8142f58d>] ?
      unregister_pernet_subsys+0x1d/0x30
      [  908.984232]  [<ffffffffa0585269>] ? bonding_exit+0x23/0xdba [bonding]
      [  908.984236]  [<ffffffff810e28ba>] ? SyS_delete_module+0x18a/0x250
      [  908.984241]  [<ffffffff81086f99>] ? task_work_run+0x89/0xc0
      [  908.984244]  [<ffffffff8152b732>] ?
      entry_SYSCALL_64_fastpath+0x16/0x75
      [  908.984247] ---[ end trace 7c006ed4abbef24b ]---
      
      Thus remove the proc entry manually if bond_release_and_destroy() is
      used. Because of the checks in bond_remove_proc_entry() it's not a
      problem for a bond device to change namespaces (the bug fixed by the
      Fixes commit) but since commit
      f9399814 ("bonding: Don't allow bond devices to change network
      namespaces.") that can't happen anyway.
      Reported-by: default avatarCarol Soto <clsoto@linux.vnet.ibm.com>
      Signed-off-by: default avatarNikolay Aleksandrov <nikolay@cumulusnetworks.com>
      Fixes: a64d49c3 ("bonding: Manage /proc/net/bonding/ entries from
                            the netdev events")
      Tested-by: default avatarCarol L Soto <clsoto@linux.vnet.ibm.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      [ luis: backported to 3.16: adjusted context ]
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      cc065253
    • Alexey Khoroshilov's avatar
      usb: gadget: mv_udc_core: fix phy_regs I/O memory leak · 1bd8a666
      Alexey Khoroshilov authored
      commit 53e20f2e upstream.
      
      There was an omission in transition to devm_xxx resource handling.
      iounmap(udc->phy_regs) were removed, but ioremap() was left
      without devm_.
      
      Found by Linux Driver Verification project (linuxtesting.org).
      Signed-off-by: default avatarAlexey Khoroshilov <khoroshilov@ispras.ru>
      Fixes: 3517c31a ("usb: gadget: mv_udc: use devm_xxx for probe")
      Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
      [ luis: backported to 3.16:
        - file rename: drivers/usb/gadget/udc/mv_udc_core.c ->
          drivers/usb/gadget/mv_udc_core.c ]
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      1bd8a666
    • Tilman Schmidt's avatar
      isdn/gigaset: reset tty->receive_room when attaching ser_gigaset · 39b01edc
      Tilman Schmidt authored
      commit fd98e941 upstream.
      
      Commit 79901317 ("n_tty: Don't flush buffer when closing ldisc"),
      first merged in kernel release 3.10, caused the following regression
      in the Gigaset M101 driver:
      
      Before that commit, when closing the N_TTY line discipline in
      preparation to switching to N_GIGASET_M101, receive_room would be
      reset to a non-zero value by the call to n_tty_flush_buffer() in
      n_tty's close method. With the removal of that call, receive_room
      might be left at zero, blocking data reception on the serial line.
      
      The present patch fixes that regression by setting receive_room
      to an appropriate value in the ldisc open method.
      
      Fixes: 79901317 ("n_tty: Don't flush buffer when closing ldisc")
      Signed-off-by: default avatarTilman Schmidt <tilman@imap.cc>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      39b01edc
    • Nikolay Aleksandrov's avatar
      bridge: mdb: fix double add notification · 230ecc15
      Nikolay Aleksandrov authored
      commit 5ebc7846 upstream.
      
      Since the mdb add/del code was introduced there have been 2 br_mdb_notify
      calls when doing br_mdb_add() resulting in 2 notifications on each add.
      
      Example:
       Command: bridge mdb add dev br0 port eth1 grp 239.0.0.1 permanent
       Before patch:
       root@debian:~# bridge monitor all
       [MDB]dev br0 port eth1 grp 239.0.0.1 permanent
       [MDB]dev br0 port eth1 grp 239.0.0.1 permanent
      
       After patch:
       root@debian:~# bridge monitor all
       [MDB]dev br0 port eth1 grp 239.0.0.1 permanent
      Signed-off-by: default avatarNikolay Aleksandrov <nikolay@cumulusnetworks.com>
      Fixes: cfd56754 ("bridge: add support of adding and deleting mdb entries")
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      230ecc15
  2. 11 Aug, 2015 33 commits