1. 27 Aug, 2015 14 commits
    • James Hogan's avatar
      MIPS: show_stack: Fix stack trace with EVA · 4df98498
      James Hogan authored
      commit 1e77863a upstream.
      
      The show_stack() function deals exclusively with kernel contexts, but if
      it gets called in user context with EVA enabled, show_stacktrace() will
      attempt to access the stack using EVA accesses, which will either read
      other user mapped data, or more likely cause an exception which will be
      handled by __get_user().
      
      This is easily reproduced using SysRq t to show all task states, which
      results in the following stack dump output:
      
       Stack : (Bad stack address)
      
      Fix by setting the current user access mode to kernel around the call to
      show_stacktrace(). This causes __get_user() to use normal loads to read
      the kernel stack.
      
      Now we get the correct output, like this:
      
       Stack : 00000000 80168960 00000000 004a0000 00000000 00000000 8060016c 1f3abd0c
                 1f172cd8 8056f09c 7ff1e450 8014fc3c 00000001 806dd0b0 0000001d 00000002
                 1f17c6a0 1f17c804 1f17c6a0 8066f6e0 00000000 0000000a 00000000 00000000
                 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
                 00000000 00000000 00000000 00000000 00000000 0110e800 1f3abd6c 1f17c6a0
                 ...
      Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
      Cc: Markos Chandras <markos.chandras@imgtec.com>
      Cc: Leonid Yegoshin <leonid.yegoshin@imgtec.com>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/10778/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      4df98498
    • James Hogan's avatar
      MIPS: do_mcheck: Fix kernel code dump with EVA · cf387a0e
      James Hogan authored
      commit 55c723e1 upstream.
      
      If a machine check exception is raised in kernel mode, user context,
      with EVA enabled, then the do_mcheck handler will attempt to read the
      code around the EPC using EVA load instructions, i.e. as if the reads
      were from user mode. This will either read random user data if the
      process has anything mapped at the same address, or it will cause an
      exception which is handled by __get_user, resulting in this output:
      
       Code: (Bad address in epc)
      
      Fix by setting the current user access mode to kernel if the saved
      register context indicates the exception was taken in kernel mode. This
      causes __get_user to use normal loads to read the kernel code.
      Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
      Cc: Markos Chandras <markos.chandras@imgtec.com>
      Cc: Leonid Yegoshin <leonid.yegoshin@imgtec.com>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/10777/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      cf387a0e
    • James Hogan's avatar
      MIPS: Malta: Don't reinitialise RTC · 0c9edbfa
      James Hogan authored
      commit 106eccb4 upstream.
      
      On Malta, since commit a87ea88d ("MIPS: Malta: initialise the RTC at
      boot"), the RTC is reinitialised and forced into binary coded decimal
      (BCD) mode during init, even if the bootloader has already initialised
      it, and may even have already put it into binary mode (as YAMON does).
      This corrupts the current time, can result in the RTC seconds being an
      invalid BCD (e.g. 0x1a..0x1f) for up to 6 seconds, as well as confusing
      YAMON for a while after reset, enough for it to report timeouts when
      attempting to load from TFTP (it actually uses the RTC in that code).
      
      Therefore only initialise the RTC to the extent that is necessary so
      that Linux avoids interfering with the bootloader setup, while also
      allowing it to estimate the CPU frequency without hanging, without a
      bootloader necessarily having done anything with the RTC (for example
      when the kernel is loaded via EJTAG).
      
      The divider control is configured for a 32KHZ reference clock if
      necessary, and the SET bit of the RTC_CONTROL register is cleared if
      necessary without changing any other bits (this bit will be set when
      coming out of reset if the battery has been disconnected).
      
      Fixes: a87ea88d ("MIPS: Malta: initialise the RTC at boot")
      Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
      Reviewed-by: default avatarPaul Burton <paul.burton@imgtec.com>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Maciej W. Rozycki <macro@linux-mips.org>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/10739/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      0c9edbfa
    • Felix Fietkau's avatar
      MIPS: Fix sched_getaffinity with MT FPAFF enabled · 7b89a55a
      Felix Fietkau authored
      commit 1d62d737 upstream.
      
      p->thread.user_cpus_allowed is zero-initialized and is only filled on
      the first sched_setaffinity call.
      
      To avoid adding overhead in the task initialization codepath, simply OR
      the returned mask in sched_getaffinity with p->cpus_allowed.
      Signed-off-by: default avatarFelix Fietkau <nbd@openwrt.org>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/10740/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      7b89a55a
    • Krzysztof Kozlowski's avatar
      thermal: exynos: Disable the regulator on probe failure · 2ab73952
      Krzysztof Kozlowski authored
      commit 5f09a5cb upstream.
      
      During probe the regulator (if present) was enabled but not disabled in
      case of failure. So an unsuccessful probe lead to enabling the
      regulator which was actually not needed because the device was not
      enabled.
      
      Additionally each deferred probe lead to increase of regulator enable
      count so it would not be effectively disabled during removal of the
      device.
      
      Test HW: Exynos4412 - Trats2 board
      Signed-off-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
      Fixes: 498d22f6 ("thermal: exynos: Support for TMU regulator defined at device tree")
      Reviewed-by: default avatarJavier Martinez Canillas <javier.martinez@collabora.co.uk>
      Signed-off-by: default avatarLukasz Majewski <l.majewski@samsung.com>
      Tested-by: default avatarLukasz Majewski <l.majewski@samsung.com>
      Signed-off-by: default avatarEduardo Valentin <edubezval@gmail.com>
      [ luis: backported to 3.16: adjusted context ]
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      2ab73952
    • NeilBrown's avatar
      md/raid1: extend spinlock to protect raid1_end_read_request against inconsistencies · 83365516
      NeilBrown authored
      commit 423f04d6 upstream.
      
      raid1_end_read_request() assumes that the In_sync bits are consistent
      with the ->degaded count.
      raid1_spare_active updates the In_sync bit before the ->degraded count
      and so exposes an inconsistency, as does error()
      So extend the spinlock in raid1_spare_active() and error() to hide those
      inconsistencies.
      
      This should probably be part of
        Commit: 34cab6f4 ("md/raid1: fix test for 'was read error from
        last working device'.")
      as it addresses the same issue.  It fixes the same bug and should go
      to -stable for same reasons.
      
      Fixes: 76073054 ("md/raid1: clean up read_balance.")
      Signed-off-by: default avatarNeilBrown <neilb@suse.com>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      83365516
    • NeilBrown's avatar
      md/bitmap: return an error when bitmap superblock is corrupt. · b1dd5485
      NeilBrown authored
      commit b97e9257 upstream
          Use separate bitmaps for each nodes in the cluster
      
      bitmap_read_sb() validates the bitmap superblock that it reads in.
      If it finds an inconsistency like a bad magic number or out-of-range
      version number, it prints an error and returns, but it incorrectly
      returns zero, so the array is still assembled with the (invalid) bitmap.
      
      This means it could try to use a bitmap with a new version number which
      it therefore does not understand.
      
      This bug was introduced in 3.5 and fix as part of a larger patch in 4.1.
      So the patch is suitable for any -stable kernel in that range.
      
      Fixes: 27581e5a ("md/bitmap: centralise allocation of bitmap file pages.")
      Signed-off-by: default avatarNeilBrown <neilb@suse.com>
      Reported-by: default avatarGuoQing Jiang <gqjiang@suse.com>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      b1dd5485
    • Ilya Dryomov's avatar
      rbd: fix copyup completion race · 1d3120e0
      Ilya Dryomov authored
      commit 2761713d upstream.
      
      For write/discard obj_requests that involved a copyup method call, the
      opcode of the first op is CEPH_OSD_OP_CALL and the ->callback is
      rbd_img_obj_copyup_callback().  The latter frees copyup pages, sets
      ->xferred and delegates to rbd_img_obj_callback(), the "normal" image
      object callback, for reporting to block layer and putting refs.
      
      rbd_osd_req_callback() however treats CEPH_OSD_OP_CALL as a trivial op,
      which means obj_request is marked done in rbd_osd_trivial_callback(),
      *before* ->callback is invoked and rbd_img_obj_copyup_callback() has
      a chance to run.  Marking obj_request done essentially means giving
      rbd_img_obj_callback() a license to end it at any moment, so if another
      obj_request from the same img_request is being completed concurrently,
      rbd_img_obj_end_request() may very well be called on such prematurally
      marked done request:
      
      <obj_request-1/2 reply>
      handle_reply()
        rbd_osd_req_callback()
          rbd_osd_trivial_callback()
          rbd_obj_request_complete()
          rbd_img_obj_copyup_callback()
          rbd_img_obj_callback()
                                          <obj_request-2/2 reply>
                                          handle_reply()
                                            rbd_osd_req_callback()
                                              rbd_osd_trivial_callback()
            for_each_obj_request(obj_request->img_request) {
              rbd_img_obj_end_request(obj_request-1/2)
              rbd_img_obj_end_request(obj_request-2/2) <--
            }
      
      Calling rbd_img_obj_end_request() on such a request leads to trouble,
      in particular because its ->xfferred is 0.  We report 0 to the block
      layer with blk_update_request(), get back 1 for "this request has more
      data in flight" and then trip on
      
          rbd_assert(more ^ (which == img_request->obj_request_count));
      
      with rhs (which == ...) being 1 because rbd_img_obj_end_request() has
      been called for both requests and lhs (more) being 1 because we haven't
      got a chance to set ->xfferred in rbd_img_obj_copyup_callback() yet.
      
      To fix this, leverage that rbd wants to call class methods in only two
      cases: one is a generic method call wrapper (obj_request is standalone)
      and the other is a copyup (obj_request is part of an img_request).  So
      make a dedicated handler for CEPH_OSD_OP_CALL and directly invoke
      rbd_img_obj_copyup_callback() from it if obj_request is part of an
      img_request, similar to how CEPH_OSD_OP_READ handler invokes
      rbd_img_obj_request_read_callback().
      
      Since rbd_img_obj_copyup_callback() is now being called from the OSD
      request callback (only), it is renamed to rbd_osd_copyup_callback().
      
      Cc: Alex Elder <elder@linaro.org>
      Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
      Reviewed-by: default avatarAlex Elder <elder@linaro.org>
      [idryomov@gmail.com: backport to < 3.18: context]
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      1d3120e0
    • Dirk Behme's avatar
      USB: sierra: add 1199:68AB device ID · 48162cbf
      Dirk Behme authored
      commit 74472233 upstream.
      
      Add support for the Sierra Wireless AR8550 device with
      USB descriptor 0x1199, 0x68AB.
      
      It is common with MC879x modules 1199:683c/683d which
      also are composite devices with 7 interfaces (0..6)
      and also MDM62xx based as the AR8550.
      
      The major difference are only the interface attributes
      02/02/01 on interfaces 3 and 4 on the AR8550. They are
      vendor specific ff/ff/ff on MC879x modules.
      
      lsusb reports:
      
      Bus 001 Device 004: ID 1199:68ab Sierra Wireless, Inc.
      Device Descriptor:
        bLength                18
        bDescriptorType         1
        bcdUSB               2.00
        bDeviceClass            0 (Defined at Interface level)
        bDeviceSubClass         0
        bDeviceProtocol         0
        bMaxPacketSize0        64
        idVendor           0x1199 Sierra Wireless, Inc.
        idProduct          0x68ab
        bcdDevice            0.06
        iManufacturer           3 Sierra Wireless, Incorporated
        iProduct                2 AR8550
        iSerial                 0
        bNumConfigurations      1
        Configuration Descriptor:
          bLength                 9
          bDescriptorType         2
          wTotalLength          198
          bNumInterfaces          7
          bConfigurationValue     1
          iConfiguration          1 Sierra Configuration
          bmAttributes         0xe0
            Self Powered
            Remote Wakeup
          MaxPower                0mA
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber        0
            bAlternateSetting       0
            bNumEndpoints           2
            bInterfaceClass       255 Vendor Specific Class
            bInterfaceSubClass    255 Vendor Specific Subclass
            bInterfaceProtocol    255 Vendor Specific Protocol
            iInterface              0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x81  EP 1 IN
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval              32
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x01  EP 1 OUT
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval              32
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber        1
            bAlternateSetting       0
            bNumEndpoints           2
            bInterfaceClass       255 Vendor Specific Class
            bInterfaceSubClass    255 Vendor Specific Subclass
            bInterfaceProtocol    255 Vendor Specific Protocol
            iInterface              0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x82  EP 2 IN
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval              32
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x02  EP 2 OUT
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval              32
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber        2
            bAlternateSetting       0
            bNumEndpoints           2
            bInterfaceClass       255 Vendor Specific Class
            bInterfaceSubClass    255 Vendor Specific Subclass
            bInterfaceProtocol    255 Vendor Specific Protocol
            iInterface              0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x83  EP 3 IN
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval              32
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x03  EP 3 OUT
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval              32
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber        3
            bAlternateSetting       0
            bNumEndpoints           3
            bInterfaceClass         2 Communications
            bInterfaceSubClass      2 Abstract (modem)
            bInterfaceProtocol      1 AT-commands (v.25ter)
            iInterface              0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x84  EP 4 IN
              bmAttributes            3
                Transfer Type            Interrupt
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0040  1x 64 bytes
              bInterval               5
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x85  EP 5 IN
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval              32
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x04  EP 4 OUT
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval              32
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber        4
            bAlternateSetting       0
            bNumEndpoints           3
            bInterfaceClass         2 Communications
            bInterfaceSubClass      2 Abstract (modem)
            bInterfaceProtocol      1 AT-commands (v.25ter)
            iInterface              0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x86  EP 6 IN
              bmAttributes            3
                Transfer Type            Interrupt
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0040  1x 64 bytes
              bInterval               5
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x87  EP 7 IN
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval              32
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x05  EP 5 OUT
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval              32
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber        5
            bAlternateSetting       0
            bNumEndpoints           3
            bInterfaceClass       255 Vendor Specific Class
            bInterfaceSubClass    255 Vendor Specific Subclass
            bInterfaceProtocol    255 Vendor Specific Protocol
            iInterface              0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x88  EP 8 IN
              bmAttributes            3
                Transfer Type            Interrupt
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0040  1x 64 bytes
              bInterval               5
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x89  EP 9 IN
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval              32
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x06  EP 6 OUT
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval              32
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber        6
            bAlternateSetting       0
            bNumEndpoints           3
            bInterfaceClass       255 Vendor Specific Class
            bInterfaceSubClass    255 Vendor Specific Subclass
            bInterfaceProtocol    255 Vendor Specific Protocol
            iInterface              0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x8a  EP 10 IN
              bmAttributes            3
                Transfer Type            Interrupt
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0040  1x 64 bytes
              bInterval               5
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x8b  EP 11 IN
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval              32
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x07  EP 7 OUT
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval              32
      Device Qualifier (for other device speed):
        bLength                10
        bDescriptorType         6
        bcdUSB               2.00
        bDeviceClass            0 (Defined at Interface level)
        bDeviceSubClass         0
        bDeviceProtocol         0
        bMaxPacketSize0        64
        bNumConfigurations      1
      Device Status:     0x0001
        Self Powered
      Signed-off-by: default avatarDirk Behme <dirk.behme@de.bosch.com>
      Cc: Lars Melin <larsm17@gmail.com>
      Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      48162cbf
    • Herbert Xu's avatar
      crypto: ixp4xx - Remove bogus BUG_ON on scattered dst buffer · 57ece698
      Herbert Xu authored
      commit f898c522 upstream.
      
      This patch removes a bogus BUG_ON in the ablkcipher path that
      triggers when the destination buffer is different from the source
      buffer and is scattered.
      Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      57ece698
    • Kinglong Mee's avatar
      nfsd: Drop BUG_ON and ignore SECLABEL on absent filesystem · 28b18334
      Kinglong Mee authored
      commit c2227a39 upstream.
      
      On an absent filesystem (one served by another server), we need to be
      able to handle requests for certain attributest (like fs_locations, so
      the client can find out which server does have the filesystem), but
      others we can't.
      
      We forgot to take that into account when adding another attribute
      bitmask work for the SECURITY_LABEL attribute.
      
      There an export entry with the "refer" option can result in:
      
      [   88.414272] kernel BUG at fs/nfsd/nfs4xdr.c:2249!
      [   88.414828] invalid opcode: 0000 [#1] SMP
      [   88.415368] Modules linked in: rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache nfsd xfs libcrc32c iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi iosf_mbi ppdev btrfs coretemp crct10dif_pclmul crc32_pclmul crc32c_intel xor ghash_clmulni_intel raid6_pq vmw_balloon parport_pc parport i2c_piix4 shpchp vmw_vmci acpi_cpufreq auth_rpcgss nfs_acl lockd grace sunrpc vmwgfx drm_kms_helper ttm drm mptspi mptscsih serio_raw mptbase e1000 scsi_transport_spi ata_generic pata_acpi [last unloaded: nfsd]
      [   88.417827] CPU: 0 PID: 2116 Comm: nfsd Not tainted 4.0.7-300.fc22.x86_64 #1
      [   88.418448] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 05/20/2014
      [   88.419093] task: ffff880079146d50 ti: ffff8800785d8000 task.ti: ffff8800785d8000
      [   88.419729] RIP: 0010:[<ffffffffa04b3c10>]  [<ffffffffa04b3c10>] nfsd4_encode_fattr+0x820/0x1f00 [nfsd]
      [   88.420376] RSP: 0000:ffff8800785db998  EFLAGS: 00010206
      [   88.421027] RAX: 0000000000000001 RBX: 000000000018091a RCX: ffff88006668b980
      [   88.421676] RDX: 00000000fffef7fc RSI: 0000000000000000 RDI: ffff880078d05000
      [   88.422315] RBP: ffff8800785dbb58 R08: ffff880078d043f8 R09: ffff880078d4a000
      [   88.422968] R10: 0000000000010000 R11: 0000000000000002 R12: 0000000000b0a23a
      [   88.423612] R13: ffff880078d05000 R14: ffff880078683100 R15: ffff88006668b980
      [   88.424295] FS:  0000000000000000(0000) GS:ffff88007c600000(0000) knlGS:0000000000000000
      [   88.424944] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [   88.425597] CR2: 00007f40bc370f90 CR3: 0000000035af5000 CR4: 00000000001407f0
      [   88.426285] Stack:
      [   88.426921]  ffff8800785dbaa8 ffffffffa049e4af ffff8800785dba08 ffffffff813298f0
      [   88.427585]  ffff880078683300 ffff8800769b0de8 0000089d00000001 0000000087f805e0
      [   88.428228]  ffff880000000000 ffff880079434a00 0000000000000000 ffff88006668b980
      [   88.428877] Call Trace:
      [   88.429527]  [<ffffffffa049e4af>] ? exp_get_by_name+0x7f/0xb0 [nfsd]
      [   88.430168]  [<ffffffff813298f0>] ? inode_doinit_with_dentry+0x210/0x6a0
      [   88.430807]  [<ffffffff8123833e>] ? d_lookup+0x2e/0x60
      [   88.431449]  [<ffffffff81236133>] ? dput+0x33/0x230
      [   88.432097]  [<ffffffff8123f214>] ? mntput+0x24/0x40
      [   88.432719]  [<ffffffff812272b2>] ? path_put+0x22/0x30
      [   88.433340]  [<ffffffffa049ac87>] ? nfsd_cross_mnt+0xb7/0x1c0 [nfsd]
      [   88.433954]  [<ffffffffa04b54e0>] nfsd4_encode_dirent+0x1b0/0x3d0 [nfsd]
      [   88.434601]  [<ffffffffa04b5330>] ? nfsd4_encode_getattr+0x40/0x40 [nfsd]
      [   88.435172]  [<ffffffffa049c991>] nfsd_readdir+0x1c1/0x2a0 [nfsd]
      [   88.435710]  [<ffffffffa049a530>] ? nfsd_direct_splice_actor+0x20/0x20 [nfsd]
      [   88.436447]  [<ffffffffa04abf30>] nfsd4_encode_readdir+0x120/0x220 [nfsd]
      [   88.437011]  [<ffffffffa04b58cd>] nfsd4_encode_operation+0x7d/0x190 [nfsd]
      [   88.437566]  [<ffffffffa04aa6dd>] nfsd4_proc_compound+0x24d/0x6f0 [nfsd]
      [   88.438157]  [<ffffffffa0496103>] nfsd_dispatch+0xc3/0x220 [nfsd]
      [   88.438680]  [<ffffffffa006f0cb>] svc_process_common+0x43b/0x690 [sunrpc]
      [   88.439192]  [<ffffffffa0070493>] svc_process+0x103/0x1b0 [sunrpc]
      [   88.439694]  [<ffffffffa0495a57>] nfsd+0x117/0x190 [nfsd]
      [   88.440194]  [<ffffffffa0495940>] ? nfsd_destroy+0x90/0x90 [nfsd]
      [   88.440697]  [<ffffffff810bb728>] kthread+0xd8/0xf0
      [   88.441260]  [<ffffffff810bb650>] ? kthread_worker_fn+0x180/0x180
      [   88.441762]  [<ffffffff81789e58>] ret_from_fork+0x58/0x90
      [   88.442322]  [<ffffffff810bb650>] ? kthread_worker_fn+0x180/0x180
      [   88.442879] Code: 0f 84 93 05 00 00 83 f8 ea c7 85 a0 fe ff ff 00 00 27 30 0f 84 ba fe ff ff 85 c0 0f 85 a5 fe ff ff e9 e3 f9 ff ff 0f 1f 44 00 00 <0f> 0b 66 0f 1f 44 00 00 be 04 00 00 00 4c 89 ef 4c 89 8d 68 fe
      [   88.444052] RIP  [<ffffffffa04b3c10>] nfsd4_encode_fattr+0x820/0x1f00 [nfsd]
      [   88.444658]  RSP <ffff8800785db998>
      [   88.445232] ---[ end trace 6cb9d0487d94a29f ]---
      Signed-off-by: default avatarKinglong Mee <kinglongmee@gmail.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      [ luis: backported to 3.16: adjusted context ]
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      28b18334
    • Pieter Hollants's avatar
      USB: qcserial: Add support for Dell Wireless 5809e 4G Modem · 9fff373f
      Pieter Hollants authored
      commit 6da3700c upstream.
      
      Added the USB IDs 0x413c:0x81b1 for the "Dell Wireless 5809e Gobi(TM) 4G
      LTE Mobile Broadband Card", a Dell-branded Sierra Wireless EM7305 LTE
      card in M.2 form factor, used eg. in Dell's Latitude E7540 Notebook
      series.
      
      "lsusb -v" output for this device:
      
      Bus 002 Device 003: ID 413c:81b1 Dell Computer Corp.
      Device Descriptor:
        bLength                18
        bDescriptorType         1
        bcdUSB               2.00
        bDeviceClass            0
        bDeviceSubClass         0
        bDeviceProtocol         0
        bMaxPacketSize0        64
        idVendor           0x413c Dell Computer Corp.
        idProduct          0x81b1
        bcdDevice            0.06
        iManufacturer           1 Sierra Wireless, Incorporated
        iProduct                2 Dell Wireless 5809e Gobi 4G LTE Mobile Broadband Card
        iSerial                 3
        bNumConfigurations      2
        Configuration Descriptor:
          bLength                 9
          bDescriptorType         2
          wTotalLength          204
          bNumInterfaces          4
          bConfigurationValue     1
          iConfiguration          0
          bmAttributes         0xe0
            Self Powered
            Remote Wakeup
          MaxPower              500mA
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber        0
            bAlternateSetting       0
            bNumEndpoints           2
            bInterfaceClass       255 Vendor Specific Class
            bInterfaceSubClass    255 Vendor Specific Subclass
            bInterfaceProtocol    255 Vendor Specific Protocol
            iInterface              0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x81  EP 1 IN
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval               0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x01  EP 1 OUT
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval               0
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber        2
            bAlternateSetting       0
            bNumEndpoints           3
            bInterfaceClass       255 Vendor Specific Class
            bInterfaceSubClass      0
            bInterfaceProtocol      0
            iInterface              0
            ** UNRECOGNIZED:  05 24 00 10 01
            ** UNRECOGNIZED:  05 24 01 00 00
            ** UNRECOGNIZED:  04 24 02 02
            ** UNRECOGNIZED:  05 24 06 00 00
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x83  EP 3 IN
              bmAttributes            3
                Transfer Type            Interrupt
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x000c  1x 12 bytes
              bInterval               9
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x82  EP 2 IN
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval               0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x02  EP 2 OUT
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval               0
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber        3
            bAlternateSetting       0
            bNumEndpoints           3
            bInterfaceClass       255 Vendor Specific Class
            bInterfaceSubClass      0
            bInterfaceProtocol      0
            iInterface              0
            ** UNRECOGNIZED:  05 24 00 10 01
            ** UNRECOGNIZED:  05 24 01 00 00
            ** UNRECOGNIZED:  04 24 02 02
            ** UNRECOGNIZED:  05 24 06 00 00
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x85  EP 5 IN
              bmAttributes            3
                Transfer Type            Interrupt
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x000c  1x 12 bytes
              bInterval               9
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x84  EP 4 IN
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval               0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x03  EP 3 OUT
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval               0
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber        8
            bAlternateSetting       0
            bNumEndpoints           3
            bInterfaceClass       255 Vendor Specific Class
            bInterfaceSubClass    255 Vendor Specific Subclass
            bInterfaceProtocol    255 Vendor Specific Protocol
            iInterface              0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x87  EP 7 IN
              bmAttributes            3
                Transfer Type            Interrupt
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x000a  1x 10 bytes
              bInterval               9
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x86  EP 6 IN
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval               0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x04  EP 4 OUT
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval               0
              ** UNRECOGNIZED:  2c ff 42 49 53 54 00 01 07 f5 40 f6 00 00 00 00 01 f7 c4 09 02 f8 c4 09 03 f9 88 13 04 fa 10 27 05 fb 10 27 06 fc c4 09 07 fd c4 09
        Configuration Descriptor:
          bLength                 9
          bDescriptorType         2
          wTotalLength           95
          bNumInterfaces          2
          bConfigurationValue     2
          iConfiguration          0
          bmAttributes         0xe0
            Self Powered
            Remote Wakeup
          MaxPower              500mA
          Interface Association:
            bLength                 8
            bDescriptorType        11
            bFirstInterface        12
            bInterfaceCount         2
            bFunctionClass          2 Communications
            bFunctionSubClass      14
            bFunctionProtocol       0
            iFunction               0
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber       12
            bAlternateSetting       0
            bNumEndpoints           1
            bInterfaceClass         2 Communications
            bInterfaceSubClass     14
            bInterfaceProtocol      0
            iInterface              0
            CDC Header:
              bcdCDC               1.10
            CDC Union:
              bMasterInterface        12
              bSlaveInterface         13
            CDC MBIM:
              bcdMBIMVersion       1.00
              wMaxControlMessage   4096
              bNumberFilters       32
              bMaxFilterSize       128
              wMaxSegmentSize      1500
              bmNetworkCapabilities 0x20
                8-byte ntb input size
            CDC MBIM Extended:
              bcdMBIMExtendedVersion           1.00
              bMaxOutstandingCommandMessages     64
              wMTU                             1500
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x82  EP 2 IN
              bmAttributes            3
                Transfer Type            Interrupt
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0040  1x 64 bytes
              bInterval               9
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber       13
            bAlternateSetting       0
            bNumEndpoints           0
            bInterfaceClass        10 CDC Data
            bInterfaceSubClass      0
            bInterfaceProtocol      2
            iInterface              0
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber       13
            bAlternateSetting       1
            bNumEndpoints           2
            bInterfaceClass        10 CDC Data
            bInterfaceSubClass      0
            bInterfaceProtocol      2
            iInterface              0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x81  EP 1 IN
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval               0
            Endpoint Descriptor:
              bLength                 7
              bDescriptorType         5
              bEndpointAddress     0x01  EP 1 OUT
              bmAttributes            2
                Transfer Type            Bulk
                Synch Type               None
                Usage Type               Data
              wMaxPacketSize     0x0200  1x 512 bytes
              bInterval               0
      Device Qualifier (for other device speed):
        bLength                10
        bDescriptorType         6
        bcdUSB               2.00
        bDeviceClass            0
        bDeviceSubClass         0
        bDeviceProtocol         0
        bMaxPacketSize0        64
        bNumConfigurations      2
      Device Status:     0x0000
        (Bus Powered)
      Signed-off-by: default avatarPieter Hollants <pieter@hollants.com>
      Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      9fff373f
    • Reinhard Speyerer's avatar
      USB: qcserial/option: make AT URCs work for Sierra Wireless MC7305/MC7355 · e66a355a
      Reinhard Speyerer authored
      commit 653cdc13 upstream.
      
      Tests with a Sierra Wireless MC7355 have shown that 1199:9041 devices
      also require the option_send_setup() code to be used on the USB
      interface for the AT port to make unsolicited response codes work
      correctly. Move these devices from the qcserial driver to the option
      driver like it has been done for the 1199:68c0 devices in commit
      d80c0d14 ("USB: qcserial/option: make
      AT URCs work for Sierra Wireless MC73xx").
      Signed-off-by: default avatarReinhard Speyerer <rspmn@arcor.de>
      Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      e66a355a
    • Michael S. Tsirkin's avatar
      PCI: Restore PCI_MSIX_FLAGS_BIRMASK definition · f666c5e0
      Michael S. Tsirkin authored
      commit c9ddbac9 upstream.
      
      09a2c73d ("PCI: Remove unused PCI_MSIX_FLAGS_BIRMASK definition")
      removed PCI_MSIX_FLAGS_BIRMASK from an exported header because it was
      unused in the kernel.  But that breaks user programs that were using it
      (QEMU in particular).
      
      Restore the PCI_MSIX_FLAGS_BIRMASK definition.
      
      [bhelgaas: changelog]
      Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      f666c5e0
  2. 25 Aug, 2015 26 commits