1. 11 Oct, 2013 32 commits
  2. 07 Oct, 2013 5 commits
    • Benjamin Herrenschmidt's avatar
      powerpc/irq: Don't switch to irq stack from softirq stack · 8b5ede69
      Benjamin Herrenschmidt authored
      irq_exit() is now called on the irq stack, which can trigger a switch to
      the softirq stack from the irq stack.  If an interrupt happens at that
      point, we will not properly detect the re-entrancy and clobber the
      original return context on the irq stack.
      
      This fixes it.  The side effect is to prevent all nesting from softirq
      stack to irq stack even in the "safe" case but it's simpler that way and
      matches what x86_64 does.
      Reported-by: default avatarCédric Le Goater <clg@fr.ibm.com>
      Tested-by: default avatarCédric Le Goater <clg@fr.ibm.com>
      Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      8b5ede69
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid · fd848319
      Linus Torvalds authored
      Pull HID fixes from Jiri Kosina:
       - fix for hidraw reference counting regression, by Manoj Chourasia
       - fix for minor number allocation for uhid, by David Herrmann
       - other small unsorted fixes / device ID additions
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
        HID: wiimote: fix FF deadlock
        HID: add Holtek USB ID 04d9:a081 SHARKOON DarkGlider
        HID: hidraw: close underlying device at removal of last reader
        HID: roccat: Fix "cannot create duplicate filename" problems
        HID: uhid: allocate static minor
      fd848319
    • Linus Torvalds's avatar
      Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile · 4f97c9b2
      Linus Torvalds authored
      Pull Tile bugfixes from Chris Metcalf:
       "This fixes some serious issues with PREEMPT support, and a couple of
        smaller corner-case issues fixed in the last couple of weeks"
      
      * 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
        arch: tile: re-use kbasename() helper
        tile: use a more conservative __my_cpu_offset in CONFIG_PREEMPT
        tile: ensure interrupts disabled for preempt_schedule_irq()
        tile: change lock initalization in hardwall
        tile: include: asm: use 'long long' instead of 'u64' for atomic64_t and its related functions
      4f97c9b2
    • David Herrmann's avatar
      HID: wiimote: fix FF deadlock · f50f9aab
      David Herrmann authored
      The input core has an internal spinlock that is acquired during event
      injection via input_event() and friends but also held during FF callbacks.
      That means, there is no way to share a lock between event-injection and FF
      handling. Unfortunately, this is what is required for wiimote state
      tracking and what we do with state.lock and input->lock.
      
      This deadlock can be triggered when using continuous data reporting and FF
      on a wiimote device at the same time. I takes me at least 30m of
      stress-testing to trigger it but users reported considerably shorter
      times (http://bpaste.net/show/132504/) when using some gaming-console
      emulators.
      
      The real problem is that we have two copies of internal state, one in the
      wiimote objects and the other in the input device. As the input-lock is
      not supposed to be accessed from outside of input-core, we have no other
      chance than offloading FF handling into a worker. This actually works
      pretty nice and also allows to implictly merge fast rumble changes into a
      single request.
      
      Due to the 3-layered workers (rumble+queue+l2cap) this might reduce FF
      responsiveness. Initial tests were fine so lets fix the race first and if
      it turns out to be too slow we can always handle FF out-of-band and skip
      the queue-worker.
      
      Cc: <stable@vger.kernel.org> # 3.11+
      Reported-by: Thomas Schneider
      Signed-off-by: default avatarDavid Herrmann <dh.herrmann@gmail.com>
      Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
      f50f9aab
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · 162bdafa
      Linus Torvalds authored
      Pull s390 fixes from Martin Schwidefsky:
       "A couple of bux fixes, notable are the regression with ptrace vs
        restarting system calls and the patch for kdump to be able to copy
        from virtual memory"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
        s390: fix system call restart after inferior call
        s390: Allow vmalloc target buffers for copy_from_oldmem()
        s390/sclp: properly detect line mode console
        s390/kprobes: add exrl to list of prohibited opcodes
        s390/3270: fix return value check in tty3270_resize_work()
      162bdafa
  3. 06 Oct, 2013 3 commits
    • Linus Torvalds's avatar
      Linux 3.12-rc4 · d0e639c9
      Linus Torvalds authored
      d0e639c9
    • Eric W. Biederman's avatar
      net: Update the sysctl permissions handler to test effective uid/gid · 2433c8f0
      Eric W. Biederman authored
      Modify the code to use current_euid(), and in_egroup_p, as in done
      in fs/proc/proc_sysctl.c:test_perm()
      
      Cc: stable@vger.kernel.org
      Reviewed-by: default avatarEric Sandeen <sandeen@redhat.com>
      Reported-by: default avatarEric Sandeen <sandeen@redhat.com>
      Signed-off-by: default avatar"Eric W. Biederman" <ebiederm@xmission.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      2433c8f0
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending · 13caa8ed
      Linus Torvalds authored
      Pull SCSI target fixes from Nicholas Bellinger:
       "Here are the outstanding target fixes queued up for v3.12-rc4 code.
      
        The highlights include:
      
         - Make vhost/scsi tag percpu_ida_alloc() use GFP_ATOMIC
         - Allow sess_cmd_map allocation failure fallback to use vzalloc
         - Fix COMPARE_AND_WRITE se_cmd->data_length bug with FILEIO backends
         - Fixes for COMPARE_AND_WRITE callback recursive failure OOPs + non
           zero scsi_status bug
         - Make iscsi-target do acknowledgement tag release from RX context
         - Setup iscsi-target with extra (cmdsn_depth / 2) percpu_ida tags
      
        Also included is a iscsi-target patch CC'ed for v3.10+ that avoids
        legacy wait_for_task=true release during fast-past StatSN
        acknowledgement, and two other SRP target related patches that address
        long-standing issues that are CC'ed for v3.3+.
      
        Extra thanks to Thomas Glanzmann for his testing feedback with
        COMPARE_AND_WRITE + EXTENDED_COPY VAAI logic"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
        iscsi-target; Allow an extra tag_num / 2 number of percpu_ida tags
        iscsi-target: Perform release of acknowledged tags from RX context
        iscsi-target: Only perform wait_for_tasks when performing shutdown
        target: Fail on non zero scsi_status in compare_and_write_callback
        target: Fix recursive COMPARE_AND_WRITE callback failure
        target: Reset data_length for COMPARE_AND_WRITE to NoLB * block_size
        ib_srpt: always set response for task management
        target: Fall back to vzalloc upon ->sess_cmd_map kzalloc failure
        vhost/scsi: Use GFP_ATOMIC with percpu_ida_alloc for obtaining tag
        ib_srpt: Destroy cm_id before destroying QP.
        target: Fix xop->dbl assignment in target_xcopy_parse_segdesc_02
      13caa8ed