1. 14 Sep, 2012 1 commit
  2. 13 Sep, 2012 10 commits
  3. 12 Sep, 2012 1 commit
  4. 11 Sep, 2012 13 commits
  5. 10 Sep, 2012 11 commits
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6 · e9bd8f16
      Linus Torvalds authored
      Pull CIFS fixes from Steve French.
      
      * 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
        CIFS: Fix endianness conversion
        CIFS: Fix error handling in cifs_push_mandatory_locks
      e9bd8f16
    • Linus Torvalds's avatar
      Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs · 1b0a9069
      Linus Torvalds authored
      Pull UDF and ext3 fixes from Jan Kara:
       "One UDF data corruption fix and one ext3 fix where we didn't write
        everything to disk on fsync in one corner case."
      
      * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
        udf: Fix data corruption for files in ICB
        ext3: Fix fdatasync() for files with only i_size changes
      1b0a9069
    • Linus Torvalds's avatar
      Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging · 6562271a
      Linus Torvalds authored
      Pull i2c subsystem fixes from Jean Delvare.
      
      * 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
        i2c-core: Fix for lockdep validator
        i2c-designware: Fix build error if CONFIG_I2C_DESIGNWARE_PLATFORM=y && CONFIG_I2C_DESIGNWARE_PCI=y
        i2c-i801: Add Device IDs for Intel Lynx Point-LP PCH
      6562271a
    • Lai Jiangshan's avatar
      workqueue: fix possible idle worker depletion across CPU hotplug · ee378aa4
      Lai Jiangshan authored
      
      
      To simplify both normal and CPU hotplug paths, worker management is
      prevented while CPU hoplug is in progress.  This is achieved by CPU
      hotplug holding the same exclusion mechanism used by workers to ensure
      there's only one manager per pool.
      
      If someone else seems to be performing the manager role, workers
      proceed to execute work items.  CPU hotplug using the same mechanism
      can lead to idle worker depletion because all workers could proceed to
      execute work items while CPU hotplug is in progress and CPU hotplug
      itself wouldn't actually perform the worker management duty - it
      doesn't guarantee that there's an idle worker left when it releases
      management.
      
      This idle worker depletion, under extreme circumstances, can break
      forward-progress guarantee and thus lead to deadlock.
      
      This patch fixes the bug by using separate mechanisms for manager
      exclusion among workers and hotplug exclusion.  For manager exclusion,
      POOL_MANAGING_WORKERS which was restored by the previous patch is
      used.  pool->manager_mutex is now only used for exclusion between the
      elected manager and CPU hotplug.  The elected manager won't proceed
      without holding pool->manager_mutex.
      
      This ensures that the worker which won the manager position can't skip
      managing while CPU hotplug is in progress.  It will block on
      manager_mutex and perform management after CPU hotplug is complete.
      
      Note that hotplug may happen while waiting for manager_mutex.  A
      manager isn't either on idle or busy list and thus the hoplug code
      can't unbind/rebind it.  Make the manager handle its own un/rebinding.
      
      tj: Updated comment and description.
      Signed-off-by: default avatarLai Jiangshan <laijs@cn.fujitsu.com>
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      ee378aa4
    • Linus Torvalds's avatar
      Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux · 5d67f2e8
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "Just noticed I hadn't send these out, nothing majorly urgent, I know
        AMD guys have some regression fixes coming soon.
      
        This contains:
         2 nouveau fixes so it loads on the retina MBP systems properly,
         2 vmwgfx fixes to load the driver earlier, and allow distros config it
         1 error->debug fix in ast
        and Keith was playing with 32-on-64 and decided we may as well stick
        the compat ioctl in all the drivers.  It fixes udl for him."
      
      * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
        drm/vmwgfx: add MODULE_DEVICE_TABLE so vmwgfx loads at boot
        drm/vmwgfx: allow a kconfig option to choose if fbcon is enabled
        drm: use drm_compat_ioctl for 32-bit apps
        drm/ast: drop debug level on error printk
        drm/nv50-/gpio: initialise to vbios defaults during init
        drm/nvd0/disp: hopefully fix selection of 6/8bpc mode on DP outputs
      5d67f2e8
    • Lai Jiangshan's avatar
      workqueue: restore POOL_MANAGING_WORKERS · 552a37e9
      Lai Jiangshan authored
      This patch restores POOL_MANAGING_WORKERS which was replaced by
      pool->manager_mutex by 60373152
      
       "workqueue: use mutex for global_cwq
      manager exclusion".
      
      There's a subtle idle worker depletion bug across CPU hotplug events
      and we need to distinguish an actual manager and CPU hotplug
      preventing management.  POOL_MANAGING_WORKERS will be used for the
      former and manager_mutex the later.
      
      This patch just lays POOL_MANAGING_WORKERS on top of the existing
      manager_mutex and doesn't introduce any synchronization changes.  The
      next patch will update it.
      
      Note that this patch fixes a non-critical anomaly where
      too_many_workers() may return %true spuriously while CPU hotplug is in
      progress.  While the issue could schedule idle timer spuriously, it
      didn't trigger any actual misbehavior.
      
      tj: Rewrote patch description.
      Signed-off-by: default avatarLai Jiangshan <laijs@cn.fujitsu.com>
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      552a37e9
    • Xiao Guangrong's avatar
      KVM: fix error paths for failed gfn_to_page() calls · 4484141a
      Xiao Guangrong authored
      
      
      This bug was triggered:
      [ 4220.198458] BUG: unable to handle kernel paging request at fffffffffffffffe
      [ 4220.203907] IP: [<ffffffff81104d85>] put_page+0xf/0x34
      ......
      [ 4220.237326] Call Trace:
      [ 4220.237361]  [<ffffffffa03830d0>] kvm_arch_destroy_vm+0xf9/0x101 [kvm]
      [ 4220.237382]  [<ffffffffa036fe53>] kvm_put_kvm+0xcc/0x127 [kvm]
      [ 4220.237401]  [<ffffffffa03702bc>] kvm_vcpu_release+0x18/0x1c [kvm]
      [ 4220.237407]  [<ffffffff81145425>] __fput+0x111/0x1ed
      [ 4220.237411]  [<ffffffff8114550f>] ____fput+0xe/0x10
      [ 4220.237418]  [<ffffffff81063511>] task_work_run+0x5d/0x88
      [ 4220.237424]  [<ffffffff8104c3f7>] do_exit+0x2bf/0x7ca
      
      The test case:
      
      	printf(fmt, ##args);		\
      	exit(-1);} while (0)
      
      static int create_vm(void)
      {
      	int sys_fd, vm_fd;
      
      	sys_fd = open("/dev/kvm", O_RDWR);
      	if (sys_fd < 0)
      		die("open /dev/kvm fail.\n");
      
      	vm_fd = ioctl(sys_fd, KVM_CREATE_VM, 0);
      	if (vm_fd < 0)
      		die("KVM_CREATE_VM fail.\n");
      
      	return vm_fd;
      }
      
      static int create_vcpu(int vm_fd)
      {
      	int vcpu_fd;
      
      	vcpu_fd = ioctl(vm_fd, KVM_CREATE_VCPU, 0);
      	if (vcpu_fd < 0)
      		die("KVM_CREATE_VCPU ioctl.\n");
      	printf("Create vcpu.\n");
      	return vcpu_fd;
      }
      
      static void *vcpu_thread(void *arg)
      {
      	int vm_fd = (int)(long)arg;
      
      	create_vcpu(vm_fd);
      	return NULL;
      }
      
      int main(int argc, char *argv[])
      {
      	pthread_t thread;
      	int vm_fd;
      
      	(void)argc;
      	(void)argv;
      
      	vm_fd = create_vm();
      	pthread_create(&thread, NULL, vcpu_thread, (void *)(long)vm_fd);
      	printf("Exit.\n");
      	return 0;
      }
      
      It caused by release kvm->arch.ept_identity_map_addr which is the
      error page.
      
      The parent thread can send KILL signal to the vcpu thread when it was
      exiting which stops faulting pages and potentially allocating memory.
      So gfn_to_pfn/gfn_to_page may fail at this time
      
      Fixed by checking the page before it is used
      Signed-off-by: default avatarXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
      Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
      4484141a
    • Takashi Iwai's avatar
      ALSA: hda - Fix Oops at codec reset/reconfig · 07dc59f0
      Takashi Iwai authored
      
      
      snd_hda_codec_reset() calls restore_pincfgs() where the codec is
      powered up again, which eventually tries to resume and initialize via
      the callbacks of the codec.  However, it's the place just after codec
      free callback, thus no codec callbacks should be called after that.
      On a codec like CS4206, it results in Oops due to the access in init
      callback.
      
      This patch fixes the issue by clearing the codec callbacks properly
      after freeing codec.
      Reported-by: default avatarDaniel J Blueman <daniel@quora.org>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      07dc59f0
    • Jean Delvare's avatar
      i2c-core: Fix for lockdep validator · 390946b1
      Jean Delvare authored
      
      
      If kernel is compiled with CONFIG_PROVE_LOCKING the
      validator raises an error when a multiplexer is removed
      via sysfs and sub-clients are connected to it. This is a
      false positive.
      Documentation/lockdep-design.txt recommends to handle this
      via calls to mutex_lock_nested().
      
      Based on an earlier fix from Michael Lawnick.
      
      Note that the extra code resolves to nothing unless
      CONFIG_DEBUG_LOCK_ALLOC=y.
      Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
      Cc: Michael Lawnick <ml.lawnick@gmx.de>
      390946b1
    • Axel Lin's avatar
      i2c-designware: Fix build error if CONFIG_I2C_DESIGNWARE_PLATFORM=y && CONFIG_I2C_DESIGNWARE_PCI=y · e68bb91b
      Axel Lin authored
      
      
      This patch adds config I2C_DESIGNWARE_CORE in Kconfig, and let
      I2C_DESIGNWARE_PLATFORM and I2C_DESIGNWARE_PCI select I2C_DESIGNWARE_CORE.
      
      Because both I2C_DESIGNWARE_PLATFORM and I2C_DESIGNWARE_PCI can be built as
      built-in or module, we also need to export the functions in i2c-designware-core.
      
      This fixes below build error when CONFIG_I2C_DESIGNWARE_PLATFORM=y &&
      CONFIG_I2C_DESIGNWARE_PCI=y:
      
        LD      drivers/i2c/busses/built-in.o
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_clear_int':
      i2c-designware-core.c:(.text+0xa10): multiple definition of `i2c_dw_clear_int'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x928): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_init':
      i2c-designware-core.c:(.text+0x178): multiple definition of `i2c_dw_init'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x90): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `dw_readl':
      i2c-designware-core.c:(.text+0xe8): multiple definition of `dw_readl'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x0): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_isr':
      i2c-designware-core.c:(.text+0x724): multiple definition of `i2c_dw_isr'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x63c): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_xfer':
      i2c-designware-core.c:(.text+0x4b0): multiple definition of `i2c_dw_xfer'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x3c8): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_is_enabled':
      i2c-designware-core.c:(.text+0x9d4): multiple definition of `i2c_dw_is_enabled'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x8ec): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `dw_writel':
      i2c-designware-core.c:(.text+0x124): multiple definition of `dw_writel'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x3c): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_xfer_msg':
      i2c-designware-core.c:(.text+0x2e8): multiple definition of `i2c_dw_xfer_msg'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x200): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_enable':
      i2c-designware-core.c:(.text+0x9c8): multiple definition of `i2c_dw_enable'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x8e0): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_read_comp_param':
      i2c-designware-core.c:(.text+0xa24): multiple definition of `i2c_dw_read_comp_param'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x93c): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_disable':
      i2c-designware-core.c:(.text+0x9dc): multiple definition of `i2c_dw_disable'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x8f4): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_func':
      i2c-designware-core.c:(.text+0x710): multiple definition of `i2c_dw_func'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x628): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_disable_int':
      i2c-designware-core.c:(.text+0xa18): multiple definition of `i2c_dw_disable_int'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x930): first defined here
      make[3]: *** [drivers/i2c/busses/built-in.o] Error 1
      make[2]: *** [drivers/i2c/busses] Error 2
      make[1]: *** [drivers/i2c] Error 2
      make: *** [drivers] Error 2
      Signed-off-by: default avatarAxel Lin <axel.lin@gmail.com>
      Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
      Tested-by: default avatarJiri Slaby <jslaby@suse.cz>
      Cc: stable@vger.kernel.org [3.2+]
      e68bb91b
    • James Ralston's avatar
      i2c-i801: Add Device IDs for Intel Lynx Point-LP PCH · 4a8f1ddd
      James Ralston authored
      
      
      Add the SMBus Device IDs for the Intel Lynx Point-LP PCH.
      Signed-off-by: default avatarJames Ralston <james.d.ralston@intel.com>
      Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
      4a8f1ddd
  6. 09 Sep, 2012 4 commits