1. 27 Apr, 2012 1 commit
    • Konrad Rzeszutek Wilk's avatar
      xen/smp: Fix crash when booting with ACPI hotplug CPUs. · cf405ae6
      Konrad Rzeszutek Wilk authored
      When we boot on a machine that can hotplug CPUs and we
      are using 'dom0_max_vcpus=X' on the Xen hypervisor line
      to clip the amount of CPUs available to the initial domain,
      we get this:
      
      (XEN) Command line: com1=115200,8n1 dom0_mem=8G noreboot dom0_max_vcpus=8 sync_console mce_verbosity=verbose console=com1,vga loglvl=all guest_loglvl=all
      .. snip..
      DMI: Intel Corporation S2600CP/S2600CP, BIOS SE5C600.86B.99.99.x032.072520111118 07/25/2011
      .. snip.
      SMP: Allowing 64 CPUs, 32 hotplug CPUs
      installing Xen timer for CPU 7
      cpu 7 spinlock event irq 361
      NMI watchdog: disabled (cpu7): hardware events not enabled
      Brought up 8 CPUs
      .. snip..
      	[acpi processor finds the CPUs are not initialized and starts calling
      	arch_register_cpu, which creates /sys/devices/system/cpu/cpu8/online]
      CPU 8 got hotplugged
      CPU 9 got hotplugged
      CPU 10 got hotplugged
      .. snip..
      initcall 1_acpi_battery_init_async+0x0/0x1b returned 0 after 406 usecs
      calling  erst_init+0x0/0x2bb @ 1
      
      	[and the scheduler sticks newly started tasks on the new CPUs, but
      	said CPUs cannot be initialized b/c the hypervisor has limited the
      	amount of vCPUS to 8 - as per the dom0_max_vcpus=8 flag.
      	The spinlock tries to kick the other CPU, but the structure for that
      	is not initialized and we crash.]
      BUG: unable to handle kernel paging request at fffffffffffffed8
      IP: [<ffffffff81035289>] xen_spin_lock+0x29/0x60
      PGD 180d067 PUD 180e067 PMD 0
      Oops: 0002 [#1] SMP
      CPU 7
      Modules linked in:
      
      Pid: 1, comm: swapper/0 Not tainted 3.4.0-rc2upstream-00001-gf5154e8 #1 Intel Corporation S2600CP/S2600CP
      RIP: e030:[<ffffffff81035289>]  [<ffffffff81035289>] xen_spin_lock+0x29/0x60
      RSP: e02b:ffff8801fb9b3a70  EFLAGS: 00010282
      
      With this patch, we cap the amount of vCPUS that the initial domain
      can run, to exactly what dom0_max_vcpus=X has specified.
      
      In the future, if there is a hypercall that will allow a running
      domain to expand past its initial set of vCPUS, this patch should
      be re-evaluated.
      
      CC: stable@kernel.org
      Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      cf405ae6
  2. 26 Apr, 2012 2 commits
    • Stefano Stabellini's avatar
      xen: use the pirq number to check the pirq_eoi_map · 521394e4
      Stefano Stabellini authored
      In pirq_check_eoi_map use the pirq number rather than the Linux irq
      number to check whether an eoi is needed in the pirq_eoi_map.
      
      The reason is that the irq number is not always identical to the
      pirq number so if we wrongly use the irq number to check the
      pirq_eoi_map we are going to check for the wrong pirq to EOI.
      
      As a consequence some interrupts might not be EOI'ed by the
      guest correctly.
      Signed-off-by: default avatarStefano Stabellini <stefano.stabellini@eu.citrix.com>
      Tested-by: default avatarTobias Geiger <tobias.geiger@vido.info>
      [v1: Added some extra wording to git commit]
      Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      521394e4
    • Konrad Rzeszutek Wilk's avatar
      xen/enlighten: Disable MWAIT_LEAF so that acpi-pad won't be loaded. · df88b2d9
      Konrad Rzeszutek Wilk authored
      There are exactly four users of __monitor and __mwait:
      
       - cstate.c (which allows acpi_processor_ffh_cstate_enter to be called
         when the cpuidle API drivers are used. However patch
         "cpuidle: replace xen access to x86 pm_idle and default_idle"
         provides a mechanism to disable the cpuidle and use safe_halt.
       - smpboot (which allows mwait_play_dead to be called). However
         safe_halt is always used so we skip that.
       - intel_idle (same deal as above).
       - acpi_pad.c. This the one that we do not want to run as we
         will hit the below crash.
      
      Why do we want to expose MWAIT_LEAF in the first place?
      We want it for the xen-acpi-processor driver - which uploads
      C-states to the hypervisor. If MWAIT_LEAF is set, the cstate.c
      sets the proper address in the C-states so that the hypervisor
      can benefit from using the MWAIT functionality. And that is
      the sole reason for using it.
      
      Without this patch, if a module performs mwait or monitor we
      get this:
      
      invalid opcode: 0000 [#1] SMP
      CPU 2
      .. snip..
      Pid: 5036, comm: insmod Tainted: G           O 3.4.0-rc2upstream-dirty #2 Intel Corporation S2600CP/S2600CP
      RIP: e030:[<ffffffffa000a017>]  [<ffffffffa000a017>] mwait_check_init+0x17/0x1000 [mwait_check]
      RSP: e02b:ffff8801c298bf18  EFLAGS: 00010282
      RAX: ffff8801c298a010 RBX: ffffffffa03b2000 RCX: 0000000000000000
      RDX: 0000000000000000 RSI: ffff8801c29800d8 RDI: ffff8801ff097200
      RBP: ffff8801c298bf18 R08: 0000000000000000 R09: 0000000000000000
      R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
      R13: ffffffffa000a000 R14: 0000005148db7294 R15: 0000000000000003
      FS:  00007fbb364f2700(0000) GS:ffff8801ff08c000(0000) knlGS:0000000000000000
      CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
      CR2: 000000000179f038 CR3: 00000001c9469000 CR4: 0000000000002660
      DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
      DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
      Process insmod (pid: 5036, threadinfo ffff8801c298a000, task ffff8801c29cd7e0)
      Stack:
       ffff8801c298bf48 ffffffff81002124 ffffffffa03b2000 00000000000081fd
       000000000178f010 000000000178f030 ffff8801c298bf78 ffffffff810c41e6
       00007fff3fb30db9 00007fff3fb30db9 00000000000081fd 0000000000010000
      Call Trace:
       [<ffffffff81002124>] do_one_initcall+0x124/0x170
       [<ffffffff810c41e6>] sys_init_module+0xc6/0x220
       [<ffffffff815b15b9>] system_call_fastpath+0x16/0x1b
      Code: <0f> 01 c8 31 c0 0f 01 c9 c9 c3 00 00 00 00 00 00 00 00 00 00 00 00
      RIP  [<ffffffffa000a017>] mwait_check_init+0x17/0x1000 [mwait_check]
       RSP <ffff8801c298bf18>
      ---[ end trace 16582fc8a3d1e29a ]---
      Kernel panic - not syncing: Fatal exception
      
      With this module (which is what acpi_pad.c would hit):
      
      MODULE_AUTHOR("Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>");
      MODULE_DESCRIPTION("mwait_check_and_back");
      MODULE_LICENSE("GPL");
      MODULE_VERSION();
      
      static int __init mwait_check_init(void)
      {
      	__monitor((void *)&current_thread_info()->flags, 0, 0);
      	__mwait(0, 0);
      	return 0;
      }
      static void __exit mwait_check_exit(void)
      {
      }
      module_init(mwait_check_init);
      module_exit(mwait_check_exit);
      Reported-by: default avatarLiu, Jinsong <jinsong.liu@intel.com>
      Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      df88b2d9
  3. 20 Apr, 2012 1 commit
  4. 19 Apr, 2012 2 commits
    • Konrad Rzeszutek Wilk's avatar
      xen/resume: Fix compile warnings. · 186bab1c
      Konrad Rzeszutek Wilk authored
      linux/drivers/xen/manage.c: In function 'do_suspend':
      linux/drivers/xen/manage.c:160:5: warning: 'si.cancelled' may be used uninitialized in this function
      Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      186bab1c
    • Konrad Rzeszutek Wilk's avatar
      xen/xenbus: Add quirk to deal with misconfigured backends. · 3066616c
      Konrad Rzeszutek Wilk authored
      A rather annoying and common case is when booting a PVonHVM guest
      and exposing the PV KBD and PV VFB - as broken toolstacks don't
      always initialize the backends correctly.
      
      Normally The HVM guest is using the VGA driver and the emulated
      keyboard for this (though upstream version of QEMU implements
      PV KBD, but still uses a VGA driver). We provide a very basic
      two-stage wait mechanism - where we wait for 30 seconds for all
      devices, and then for 270 for all them except the two mentioned.
      
      That allows us to wait for the essential devices, like network
      or disk for the full 6 minutes.
      
      To trigger this, put this in your guest config:
      
      vfb = [ 'vnc=1, vnclisten=0.0.0.0 ,vncunused=1']
      
      instead of this:
      vnc=1
      vnclisten="0.0.0.0"
      
      CC: stable@kernel.org
      Acked-by: default avatarStefano Stabellini <stefano.stabellini@eu.citrix.com>
      [v3: Split delay in non-essential (30 seconds) and essential
       devices per Ian and Stefano suggestion]
      [v4: Added comments per Stefano suggestion]
      Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      3066616c
  5. 18 Apr, 2012 2 commits
    • Konrad Rzeszutek Wilk's avatar
      xen/blkback: Fix warning error. · a71e23d9
      Konrad Rzeszutek Wilk authored
      drivers/block/xen-blkback/xenbus.c: In function 'xen_blkbk_discard':
      drivers/block/xen-blkback/xenbus.c:419:4: warning: passing argument 1 of 'dev_warn' makes pointer from integer without a cast
      +[enabled by default]
      include/linux/device.h:894:5: note: expected 'const struct device *' but argument is of type 'long int'
      
      It is unclear how that mistake made it in. It surely is wrong.
      Acked-by: default avatarJens Axboe <axboe@kernel.dk>
      Reported-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
      Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      a71e23d9
    • Konrad Rzeszutek Wilk's avatar
      Merge commit 'c104f1fa' into stable/for-linus-3.4 · 681e4a5e
      Konrad Rzeszutek Wilk authored
      * commit 'c104f1fa': (14566 commits)
        cpufreq: OMAP: fix build errors: depends on ARCH_OMAP2PLUS
        sparc64: Eliminate obsolete __handle_softirq() function
        sparc64: Fix bootup crash on sun4v.
        kconfig: delete last traces of __enabled_ from autoconf.h
        Revert "kconfig: fix __enabled_ macros definition for invisible and un-selected symbols"
        kconfig: fix IS_ENABLED to not require all options to be defined
        irq_domain: fix type mismatch in debugfs output format
        staging: android: fix mem leaks in __persistent_ram_init()
        staging: vt6656: Don't leak memory in drivers/staging/vt6656/ioctl.c::private_ioctl()
        staging: iio: hmc5843: Fix crash in probe function.
        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
        ...
      681e4a5e
  6. 17 Apr, 2012 3 commits
  7. 14 Apr, 2012 3 commits
    • Linus Torvalds's avatar
      Merge branch 'for-3.4/drivers' of git://git.kernel.dk/linux-block · c104f1fa
      Linus Torvalds authored
      Pull block driver bits from Jens Axboe:
      
       - A series of fixes for mtip32xx.  Most from Asai at Micron, but also
         one from Greg, getting rid of the dependency on PCIE_HOTPLUG.
      
       - A few bug fixes for xen-blkfront, and blkback.
      
       - A virtio-blk fix for Vivek, making resize actually work.
      
       - Two fixes from Stephen, making larger transfers possible on cciss.
         This is needed for tape drive support.
      
      * 'for-3.4/drivers' of git://git.kernel.dk/linux-block:
        block: mtip32xx: remove HOTPLUG_PCI_PCIE dependancy
        mtip32xx: dump tagmap on failure
        mtip32xx: fix handling of commands in various scenarios
        mtip32xx: Shorten macro names
        mtip32xx: misc changes
        mtip32xx: Add new sysfs entry 'status'
        mtip32xx: make setting comp_time as common
        mtip32xx: Add new bitwise flag 'dd_flag'
        mtip32xx: fix error handling in mtip_init()
        virtio-blk: Call revalidate_disk() upon online disk resize
        xen/blkback: Make optional features be really optional.
        xen/blkback: Squash the discard support for 'file' and 'phy' type.
        mtip32xx: fix incorrect value set for drv_cleanup_done, and re-initialize and start port in mtip_restart_port()
        cciss: Fix scsi tape io with more than 255 scatter gather elements
        cciss: Initialize scsi host max_sectors for tape drive support
        xen-blkfront: make blkif_io_lock spinlock per-device
        xen/blkfront: don't put bdev right after getting it
        xen-blkfront: use bitmap_set() and bitmap_clear()
        xen/blkback: Enable blkback on HVM guests
        xen/blkback: use grant-table.c hypercall wrappers
      c104f1fa
    • Linus Torvalds's avatar
      Merge branch 'for-3.4/core' of git://git.kernel.dk/linux-block · d8dd0b6d
      Linus Torvalds authored
      Pull block core bits from Jens Axboe:
       "It's a nice and quiet round this time, since most of the tricky stuff
        has been pushed to 3.5 to give it more time to mature.  After a few
        hectic block IO core changes for 3.3 and 3.2, I'm quite happy with a
        slow round.
      
        Really minor stuff in here, the only real functional change is making
        the auto-unplug threshold a per-queue entity.  The threshold is set so
        that it's low enough that we don't hold off IO for too long, but still
        big enough to get a nice benefit from the batched insert (and hence
        queue lock cost reduction).  For raid configurations, this currently
        breaks down."
      
      * 'for-3.4/core' of git://git.kernel.dk/linux-block:
        block: make auto block plug flush threshold per-disk based
        Documentation: Add sysfs ABI change for cfq's target latency.
        block: Make cfq_target_latency tunable through sysfs.
        block: use lockdep_assert_held for queue locking
        block: blk_alloc_queue_node(): use caller's GFP flags instead of GFP_KERNEL
      d8dd0b6d
    • Kevin Hilman's avatar
      cpufreq: OMAP: fix build errors: depends on ARCH_OMAP2PLUS · 2d59dcfb
      Kevin Hilman authored
      The OMAP driver needs a 'depends on ARCH_OMAP2PLUS' since it only
      builds for OMAP2+ platforms.
      
      This 'depends on' was in the original patch from Russell King, but was
      erroneously removed by me when making this option user-selectable in
      commit b09db45c (cpufreq: OMAP driver depends CPUfreq tables.)  This
      patch remedies that.
      
      Apologies to Russell King for breaking his originally working patch.
      
      Also, thanks to Grazvydas Ignotas for reporting the same problem.
      
      Cc: Russell King <rmk+kernel@arm.linux.org.uk>
      Cc: Grazvydas Ignotas <notasas@gmail.com>
      Signed-off-by: default avatarKevin Hilman <khilman@ti.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      2d59dcfb
  8. 13 Apr, 2012 10 commits
  9. 12 Apr, 2012 16 commits
    • Linus Torvalds's avatar
      Merge tag 'usb-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · 7c427f45
      Linus Torvalds authored
      Pull USB fixes from Greg KH:
       "Here are a number of fixes for the USB core and drivers for 3.4-rc2
      
        Lots of tiny xhci fixes here, a few usb-serial driver fixes and new
        device ids, and a smattering of other minor fixes in different USB
        drivers.
      
        Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
      
      * tag 'usb-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (30 commits)
        USB: update usbtmc api documentation
        xHCI: Correct the #define XHCI_LEGACY_DISABLE_SMI
        xHCI: use gfp flags from caller instead of GFP_ATOMIC
        xHCI: add XHCI_RESET_ON_RESUME quirk for VIA xHCI host
        USB: fix bug of device descriptor got from superspeed device
        xhci: Fix register save/restore order.
        xhci: Restore event ring dequeue pointer on resume.
        xhci: Don't write zeroed pointers to xHC registers.
        xhci: Warn when hosts don't halt.
        xhci: don't re-enable IE constantly
        usb: xhci: fix section mismatch in linux-next
        xHCI: correct to print the true HSEE of USBCMD
        USB: serial: fix race between probe and open
        UHCI: hub_status_data should indicate if ports are resuming
        EHCI: keep track of ports being resumed and indicate in hub_status_data
        USB: fix race between root-hub suspend and remote wakeup
        USB: sierra: add support for Sierra Wireless MC7710
        USB: ftdi_sio: fix race condition in TIOCMIWAIT, and abort of TIOCMIWAIT when the device is removed
        USB: ftdi_sio: fix status line change handling for TIOCMIWAIT and TIOCGICOUNT
        USB: don't ignore suspend errors for root hubs
        ...
      7c427f45
    • Linus Torvalds's avatar
      Merge tag 'tty-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty · f4f9c1ac
      Linus Torvalds authored
      Pull tty and serial fixes from Greg KH:
       "Here are some tty and serial fixes for 3.4-rc2.
      
        Most important here is the pl011 fix, which has been reported by about
        100 different people, which means more people use it than I expected
        :)
      
        There are also some 8250 driver reverts due to some problems reported
        by them.  And other minor fixes as well.
      
        Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
      
      * tag 'tty-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
        pch_uart: Add Kontron COMe-mTT10 uart clock quirk
        pch_uart: Fix MSI setting issue
        serial/8250_pci: add a "force background timer" flag and use it for the "kt" serial port
        Revert "serial/8250_pci: setup-quirk workaround for the kt serial controller"
        Revert "serial/8250_pci: init-quirk msi support for kt serial controller"
        tty/serial/omap: console can only be built-in
        serial: samsung: fix omission initialize ulcon in reset port fn()
        printk(): add KERN_CONT where needed in hpet and vt code
        tty/serial: atmel_serial: fix RS485 half-duplex problem
        tty: serial: altera_uart: Check for NULL platform_data in probe.
        isdn/gigaset: use gig_dbg() for debugging output
        omap-serial: Fix the error handling in the omap_serial probe
        serial: PL011: move interrupt clearing
      f4f9c1ac
    • Linus Torvalds's avatar
      Merge tag 'staging-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging · 3dbc35a3
      Linus Torvalds authored
      Pull staging tree fixes from Greg KH:
       "Here are a number of bugfixes for the drivers/staging/ portion of the
        kernel that have been reported recently.
      
        Nothing major here, with maybe the exception of the ramster code can
        now be built so it is enabled in the build again, and lots of memory
        leaks that people like to have fixed on their systems.
      
        Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
      
      * tag 'staging-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
        staging: android: fix mem leaks in __persistent_ram_init()
        staging: vt6656: Don't leak memory in drivers/staging/vt6656/ioctl.c::private_ioctl()
        staging: iio: hmc5843: Fix crash in probe function.
        staging/xgifb: fix display on XGI Volari Z11m cards
        Staging: android: timed_gpio: Fix resource leak in timed_gpio_probe error paths
        android: make persistent_ram based drivers depend on HAVE_MEMBLOCK
        staging: iio: ak8975: Remove i2c client data corruption
        staging: drm/omap: move where DMM driver is registered
        staging: zsmalloc: fix memory leak
        Staging: rts_pstor: off by one in for loop
        staging: ozwpan: Added new maintainer for ozwpan
        staging:rts_pstor:Avoid "Bad target number" message when probing driver
        staging:rts_pstor:Fix possible panic by NULL pointer dereference
        Staging: vt6655-6: check keysize before memcpy()
        staging/media/as102: Don't call release_firmware() on uninitialized variable
        staging:iio:core add missing increment of loop index in iio_map_array_unregister()
        staging: ramster: unbreak my heart
        staging/vme: Fix module parameters
        staging: sep: Fix sign of error
      3dbc35a3
    • Linus Torvalds's avatar
      Merge tag 'driver-core-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core · f5ad5010
      Linus Torvalds authored
      Pull driver core and kobject fixes from Greg KH:
       "Here are some minor fixes for the driver core and kobjects that people
        have reported recently.
      
        Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
      
      * tag 'driver-core-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
        kobject: provide more diagnostic info for kobject_add_internal() failures
        sysfs: handle 'parent deleted before child added'
        sysfs: Prevent crash on unset sysfs group attributes
        sysfs: Update the name hash for an entry after changing the namespace
        drivers/base: fix compiler warning in SoC export driver - idr should be ida
        drivers/base: Remove unneeded spin_lock_init call for soc_lock
      f5ad5010
    • Linus Torvalds's avatar
      Merge tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux-2.6 · b3dfd76c
      Linus Torvalds authored
      Pull a fix for the recent irqdomain bug fixes from Grant Likely:
       "I flubbed one patch in the last pull request which broke a format
        string on 64 bit platforms.  Here's the fix."
      
      * tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux-2.6:
        irq_domain: fix type mismatch in debugfs output format
      b3dfd76c
    • Grant Likely's avatar
      irq_domain: fix type mismatch in debugfs output format · 5269a9ab
      Grant Likely authored
      sizeof(void*) returns an unsigned long, but it was being used as a width parameter to a "%-*s" format string which requires an int.  On 64 bit platforms this causes a type mismatch:
      
          linux/kernel/irq/irqdomain.c:575: warning: field width should have type
          'int', but argument 6 has type 'long unsigned int'
      
      This change casts the size to an int so printf gets the right data type.
      Reported-by: default avatarAndreas Schwab <schwab@linux-m68k.org>
      Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      Cc: David Daney <david.daney@cavium.com>
      5269a9ab
    • Linus Torvalds's avatar
      Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 9b1ef1de
      Linus Torvalds authored
      Pull trivial perf build failure fix from Thomas Gleixner.
      
      * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        perf tools: Fix getrusage() related build failure on glibc trunk
      9b1ef1de
    • Linus Torvalds's avatar
      Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · ccb1ec95
      Linus Torvalds authored
      Pull timer fixes from Thomas Gleixner:
       "The itimer removal one is not strictly a fix, but I really wanted to
        avoid a rebase of the urgent ones."
      
      * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        Revert "clocksource: Load the ACPI PM clocksource asynchronously"
        clockevents: tTack broadcast device mode change in tick_broadcast_switch_to_oneshot()
        itimer: Use printk_once instead of WARN_ONCE
        nohz: Fix stale jiffies update in tick_nohz_restart()
        tick: Document TICK_ONESHOT config option
        proc: stats: Use arch_idle_time for idle and iowait times if available
        itimer: Schedule silent NULL pointer fixup in setitimer() for removal
      ccb1ec95
    • Linus Torvalds's avatar
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 4a1d7544
      Linus Torvalds authored
      Pull x86 fixes from Thomas Gleixner.
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86: Use correct byte-sized register constraint in __add()
        x86: Use correct byte-sized register constraint in __xchg_op()
        x86: vsyscall: Use NULL instead 0 for a pointer argument
      4a1d7544
    • Jesper Juhl's avatar
      staging: android: fix mem leaks in __persistent_ram_init() · 474a8988
      Jesper Juhl authored
      If, in __persistent_ram_init(), the call to
      persistent_ram_buffer_init() fails or the call to
      persistent_ram_init_ecc() fails then we fail to free the memory we
      allocated to 'prz' with kzalloc() - thus leaking it.
      
      To prevent the leaks I consolidated all error exits from the function
      at a 'err:' label at the end and made all error cases jump to that
      label where we can then make sure we always free 'prz'. This is safe
      since all the situations where the code bails out happen before 'prz'
      has been stored anywhere and although we'll do a redundant kfree(NULL)
      call in the case of kzalloc() itself failing that's OK since kfree()
      deals gracefully with NULL pointers and I felt it was more important
      to keep all error exits at a single location than to avoid that one
      harmless/redundant kfree() on a error path.
      Signed-off-by: default avatarJesper Juhl <jj@chaosbits.net>
      Acked-by: default avatarColin Cross <ccross@android.com>
      Cc: stable <stable@vger.kernel.org>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      474a8988
    • Jesper Juhl's avatar
      staging: vt6656: Don't leak memory in drivers/staging/vt6656/ioctl.c::private_ioctl() · 17b7e1ba
      Jesper Juhl authored
      If copy_to_user() fails in the WLAN_CMD_GET_NODE_LIST case of the
      switch in drivers/staging/vt6656/ioctl.c::private_ioctl() we'll leak
      the memory allocated to 'pNodeList'. Fix that by kfree'ing the memory
      in the failure case.
      Also remove a pointless cast (to type 'PSNodeList') of a kmalloc()
      return value - kmalloc() returns a void pointer that is implicitly
      converted, so there is no need for an explicit cast.
      Signed-off-by: default avatarJesper Juhl <jj@chaosbits.net>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      17b7e1ba
    • Marek Belisko's avatar
      staging: iio: hmc5843: Fix crash in probe function. · 62d2feb9
      Marek Belisko authored
      Fix crash after issuing:
      	echo hmc5843 0x1e > /sys/class/i2c-dev/i2c-2/device/new_device
      
      	[   37.180999] device: '2-001e': device_add
      	[   37.188293] bus: 'i2c': add device 2-001e
      	[   37.194549] PM: Adding info for i2c:2-001e
      	[   37.200958] bus: 'i2c': driver_probe_device: matched device 2-001e with driver hmc5843
      	[   37.210815] bus: 'i2c': really_probe: probing driver hmc5843 with device 2-001e
      	[   37.224884] HMC5843 initialized
      	[   37.228759] ------------[ cut here ]------------
      	[   37.233612] kernel BUG at mm/slab.c:505!
      	[   37.237701] Internal error: Oops - BUG: 0 [#1] PREEMPT
      	[   37.243103] Modules linked in:
      	[   37.246337] CPU: 0    Not tainted  (3.3.1-gta04+ #28)
      	[   37.251647] PC is at kfree+0x84/0x144
      	[   37.255493] LR is at kfree+0x20/0x144
      	[   37.259338] pc : [<c00b408c>]    lr : [<c00b4028>]    psr: 40000093
      	[   37.259368] sp : de249cd8  ip : 0000000c  fp : 00000090
      	[   37.271362] r10: 0000000a  r9 : de229eac  r8 : c0236274
      	[   37.276855] r7 : c09d6490  r6 : a0000013  r5 : de229c00  r4 : de229c10
      	[   37.283691] r3 : c0f00218  r2 : 00000400  r1 : c0eea000  r0 : c00b4028
      	[   37.290527] Flags: nZcv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
      	[   37.298095] Control: 10c5387d  Table: 9e1d0019  DAC: 00000015
      	[   37.304107] Process sh (pid: 91, stack limit = 0xde2482f0)
      	[   37.309844] Stack: (0xde249cd8 to 0xde24a000)
      	[   37.314422] 9cc0:                                                       de229c10 de229c00
      	[   37.322998] 9ce0: de229c10 ffffffea 00000005 c0236274 de140a80 c00b4798 dec00080 de140a80
      	[   37.331573] 9d00: c032f37c dec00080 000080d0 00000001 de229c00 de229c10 c048d578 00000005
      	[   37.340148] 9d20: de229eac 0000000a 00000090 c032fa40 00000001 00000000 00000001 de229c10
      	[   37.348724] 9d40: de229eac 00000029 c075b558 00000001 00000003 00000004 de229c10 c048d594
      	[   37.357299] 9d60: 00000000 60000013 00000018 205b0007 37332020 3432322e 5d343838 c0060020
      	[   37.365905] 9d80: de251600 00000001 00000000 de251600 00000001 c0065a84 de229c00 de229c48
      	[   37.374481] 9da0: 00000006 0048d62c de229c38 de229c00 de229c00 de1f6c00 de1f6c20 00000001
      	[   37.383056] 9dc0: 00000000 c048d62c 00000000 de229c00 de229c00 de1f6c00 de1f6c20 00000001
      	[   37.391632] 9de0: 00000000 c048d62c 00000000 c0330164 00000000 de1f6c20 c048d62c de1f6c00
      	[   37.400207] 9e00: c0330078 de1f6c04 c078d714 de189b58 00000000 c02ccfd8 de1f6c20 c0795f40
      	[   37.408782] 9e20: c0238330 00000000 00000000 c02381a8 de1b9fc0 de1f6c20 de1f6c20 de249e48
      	[   37.417358] 9e40: c0238330 c0236bb0 decdbed8 de7d0f14 de1f6c20 de1f6c20 de1f6c54 de1f6c20
      	[   37.425933] 9e60: 00000000 c0238030 de1f6c20 c078d7bc de1f6c20 c02377ec de1f6c20 de1f6c28
      	[   37.434509] 9e80: dee64cb0 c0236138 c047c554 de189b58 00000000 c004b45c de1f6c20 de1f6cd8
      	[   37.443084] 9ea0: c0edfa6c de1f6c00 dee64c68 de1f6c04 de1f6c20 dee64cb8 c047c554 de189b58
      	[   37.451690] 9ec0: 00000000 c02cd634 dee64c68 de249ef4 de23b008 dee64cb0 0000000d de23b000
      	[   37.460266] 9ee0: de23b007 c02cd78c 00000002 00000000 00000000 35636d68 00333438 00000000
      	[   37.468841] 9f00: 00000000 00000000 001e0000 00000000 00000000 00000000 00000000 0a10cec0
      	[   37.477416] 9f20: 00000002 de249f80 0000000d dee62990 de189b40 c0234d88 0000000d c010c354
      	[   37.485992] 9f40: 0000000d de210f28 000acc88 de249f80 0000000d de248000 00000000 c00b7bf8
      	[   37.494567] 9f60: de210f28 000acc88 de210f28 000acc88 00000000 00000000 0000000d c00b7ed8
      	[   37.503143] 9f80: 00000000 00000000 0000000d 00000000 0007fa28 0000000d 000acc88 00000004
      	[   37.511718] 9fa0: c000e544 c000e380 0007fa28 0000000d 00000001 000acc88 0000000d 00000000
      	[   37.520294] 9fc0: 0007fa28 0000000d 000acc88 00000004 00000001 00000020 00000002 00000000
      	[   37.528869] 9fe0: 00000000 beab8624 0000ea05 b6eaebac 600d0010 00000001 00000000 00000000
      	[   37.537475] [<c00b408c>] (kfree+0x84/0x144) from [<c0236274>] (device_add+0x530/0x57c)
      	[   37.545806] [<c0236274>] (device_add+0x530/0x57c) from [<c032fa40>] (iio_device_register+0x8c8/0x990)
      	[   37.555480] [<c032fa40>] (iio_device_register+0x8c8/0x990) from [<c0330164>] (hmc5843_probe+0xec/0x114)
      	[   37.565338] [<c0330164>] (hmc5843_probe+0xec/0x114) from [<c02ccfd8>] (i2c_device_probe+0xc4/0xf8)
      	[   37.574737] [<c02ccfd8>] (i2c_device_probe+0xc4/0xf8) from [<c02381a8>] (driver_probe_device+0x118/0x218)
      	[   37.584777] [<c02381a8>] (driver_probe_device+0x118/0x218) from [<c0236bb0>] (bus_for_each_drv+0x4c/0x84)
      	[   37.594818] [<c0236bb0>] (bus_for_each_drv+0x4c/0x84) from [<c0238030>] (device_attach+0x78/0xa4)
      	[   37.604125] [<c0238030>] (device_attach+0x78/0xa4) from [<c02377ec>] (bus_probe_device+0x28/0x9c)
      	[   37.613433] [<c02377ec>] (bus_probe_device+0x28/0x9c) from [<c0236138>] (device_add+0x3f4/0x57c)
      	[   37.622650] [<c0236138>] (device_add+0x3f4/0x57c) from [<c02cd634>] (i2c_new_device+0xf8/0x19c)
      	[   37.631805] [<c02cd634>] (i2c_new_device+0xf8/0x19c) from [<c02cd78c>] (i2c_sysfs_new_device+0xb4/0x130)
      	[   37.641754] [<c02cd78c>] (i2c_sysfs_new_device+0xb4/0x130) from [<c0234d88>] (dev_attr_store+0x18/0x24)
      	[   37.651611] [<c0234d88>] (dev_attr_store+0x18/0x24) from [<c010c354>] (sysfs_write_file+0x10c/0x140)
      	[   37.661193] [<c010c354>] (sysfs_write_file+0x10c/0x140) from [<c00b7bf8>] (vfs_write+0xb0/0x178)
      	[   37.670410] [<c00b7bf8>] (vfs_write+0xb0/0x178) from [<c00b7ed8>] (sys_write+0x3c/0x68)
      	[   37.678833] [<c00b7ed8>] (sys_write+0x3c/0x68) from [<c000e380>] (ret_fast_syscall+0x0/0x3c)
      	[   37.687683] Code: 1593301c e5932000 e3120080 1a000000 (e7f001f2)
      	[   37.700775] ---[ end trace aaf805debdb69390 ]---
      
      Client data was assigned to iio_dev structure in probe but in
      hmc5843_init_client function casted to private driver data structure which
      is wrong. Possibly calling mutex_init(&data->lock); corrupt data
      which the lead to above crash.
      Signed-off-by: default avatarMarek Belisko <marek.belisko@open-nandra.com>
      Cc: stable <stable@vger.kernel.org>
      Acked-by: default avatarJonathan Cameron <jic23@kernel.org>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      62d2feb9
    • Linus Torvalds's avatar
      Merge branch 'akpm' (Andrew's patch-bomb) · ecca5c3a
      Linus Torvalds authored
      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
      ecca5c3a
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 174808af
      Linus Torvalds authored
      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
        ...
      174808af
    • Linus Torvalds's avatar
      Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux · 778c2dee
      Linus Torvalds authored
      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.
        ...
      778c2dee
    • Linus Torvalds's avatar
      Merge tag 'md-3.4-fixes' of git://neil.brown.name/md · e42bd6e4
      Linus Torvalds authored
      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.
      e42bd6e4