1. 19 Jun, 2015 9 commits
  2. 18 Jun, 2015 5 commits
  3. 17 Jun, 2015 2 commits
    • Wolfram Sang's avatar
      i2c: slave: fix the example how to instantiate from userspace · 83666102
      Wolfram Sang authored
      I copied the wrong shell code into the documentation. Sorry to all who
      tried to get sense out of this current example :/ Slight rewording while
      we are here.
      Reported-by: default avatarTim Bakker <bakkert@mymail.vcu.edu>
      Signed-off-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
      Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
      Cc: stable@kernel.org
    • Steven Rostedt's avatar
      tracing: Have filter check for balanced ops · 2cf30dc1
      Steven Rostedt authored
      When the following filter is used it causes a warning to trigger:
       # cd /sys/kernel/debug/tracing
       # echo "((dev==1)blocks==2)" > events/ext4/ext4_truncate_exit/filter
      -bash: echo: write error: Invalid argument
       # cat events/ext4/ext4_truncate_exit/filter
      parse_error: No error
       ------------[ cut here ]------------
       WARNING: CPU: 2 PID: 1223 at kernel/trace/trace_events_filter.c:1640 replace_preds+0x3c5/0x990()
       Modules linked in: bnep lockd grace bluetooth  ...
       CPU: 3 PID: 1223 Comm: bash Tainted: G        W       4.1.0-rc3-test+ #450
       Hardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01 v02.05 05/07/2012
        0000000000000668 ffff8800c106bc98 ffffffff816ed4f9 ffff88011ead0cf0
        0000000000000000 ffff8800c106bcd8 ffffffff8107fb07 ffffffff8136b46c
        ffff8800c7d81d48 ffff8800d4c2bc00 ffff8800d4d4f920 00000000ffffffea
       Call Trace:
        [<ffffffff816ed4f9>] dump_stack+0x4c/0x6e
        [<ffffffff8107fb07>] warn_slowpath_common+0x97/0xe0
        [<ffffffff8136b46c>] ? _kstrtoull+0x2c/0x80
        [<ffffffff8107fb6a>] warn_slowpath_null+0x1a/0x20
        [<ffffffff81159065>] replace_preds+0x3c5/0x990
        [<ffffffff811596b2>] create_filter+0x82/0xb0
        [<ffffffff81159944>] apply_event_filter+0xd4/0x180
        [<ffffffff81152bbf>] event_filter_write+0x8f/0x120
        [<ffffffff811db2a8>] __vfs_write+0x28/0xe0
        [<ffffffff811dda43>] ? __sb_start_write+0x53/0xf0
        [<ffffffff812e51e0>] ? security_file_permission+0x30/0xc0
        [<ffffffff811dc408>] vfs_write+0xb8/0x1b0
        [<ffffffff811dc72f>] SyS_write+0x4f/0xb0
        [<ffffffff816f5217>] system_call_fastpath+0x12/0x6a
       ---[ end trace e11028bd95818dcd ]---
      Worse yet, reading the error message (the filter again) it says that
      there was no error, when there clearly was. The issue is that the
      code that checks the input does not check for balanced ops. That is,
      having an op between a closed parenthesis and the next token.
      This would only cause a warning, and fail out before doing any real
      harm, but it should still not caues a warning, and the error reported
      should work:
       # cd /sys/kernel/debug/tracing
       # echo "((dev==1)blocks==2)" > events/ext4/ext4_truncate_exit/filter
      -bash: echo: write error: Invalid argument
       # cat events/ext4/ext4_truncate_exit/filter
      parse_error: Meaningless filter expression
      And give no kernel warning.
      Link: http://lkml.kernel.org/r/20150615175025.7e809215@gandalf.local.home
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
      Cc: stable@vger.kernel.org # 2.6.31+
      Reported-by: default avatarVince Weaver <vincent.weaver@maine.edu>
      Tested-by: default avatarVince Weaver <vincent.weaver@maine.edu>
      Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
  4. 16 Jun, 2015 4 commits
    • Takashi Iwai's avatar
      ALSA: hda - Fix unused label skip_i915 · 145c0e91
      Takashi Iwai authored
      When CONFIG_SND_HDA_I915=n, we get a compile warning:
        sound/pci/hda/hda_intel.c: In function ‘azx_probe_continue’:
        sound/pci/hda/hda_intel.c:1882:2: warning: label ‘skip_i915’ defined but not used [-Wunused-label]
      Fix it by putting again ifdef to it.  Sigh.
      Fixes: bf06848b
       ('ALSA: hda - Continue probing even if i915 binding fails')
      Reported-by: default avatarBorislav Petkov <bp@suse.de>
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
    • Steve Cornelius's avatar
      crypto: caam - fix RNG buffer cache alignment · 412c98c1
      Steve Cornelius authored
      The hwrng output buffers (2) are cast inside of a a struct (caam_rng_ctx)
      allocated in one DMA-tagged region. While the kernel's heap allocator
      should place the overall struct on a cacheline aligned boundary, the 2
      buffers contained within may not necessarily align. Consenquently, the ends
      of unaligned buffers may not fully flush, and if so, stale data will be left
      behind, resulting in small repeating patterns.
      This fix aligns the buffers inside the struct.
      Note that not all of the data inside caam_rng_ctx necessarily needs to be
      DMA-tagged, only the buffers themselves require this. However, a fix would
      incur the expense of error-handling bloat in the case of allocation failure.
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarSteve Cornelius <steve.cornelius@freescale.com>
      Signed-off-by: default avatarVictoria Milhoan <vicki.milhoan@freescale.com>
      Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
    • Steve Cornelius's avatar
      crypto: caam - improve initalization for context state saves · 6fd4b156
      Steve Cornelius authored
      Multiple function in asynchronous hashing use a saved-state block,
      a.k.a. struct caam_hash_state, which holds a stash of information
      between requests (init/update/final). Certain values in this state
      block are loaded for processing using an inline-if, and when this
      is done, the potential for uninitialized data can pose conflicts.
      Therefore, this patch improves initialization of state data to
      prevent false assignments using uninitialized data in the state block.
      This patch addresses the following traceback, originating in
      ahash_final_ctx(), although a problem like this could certainly
      exhibit other symptoms:
      kernel BUG at arch/arm/mm/dma-mapping.c:465!
      Unable to handle kernel NULL pointer dereference at virtual address 00000000
      pgd = 80004000
      [00000000] *pgd=00000000
      Internal error: Oops: 805 [#1] PREEMPT SMP
      Modules linked in:
      CPU: 0    Not tainted  (3.0.15-01752-gdd441b9-dirty #40)
      PC is at __bug+0x1c/0x28
      LR is at __bug+0x18/0x28
      pc : [<80043240>]    lr : [<8004323c>]    psr: 60000013
      sp : e423fd98  ip : 60000013  fp : 0000001c
      r10: e4191b84  r9 : 00000020  r8 : 00000009
      r7 : 88005038  r6 : 00000001  r5 : 2d676572  r4 : e4191a60
      r3 : 00000000  r2 : 00000001  r1 : 60000093  r0 : 00000033
      Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
      Control: 10c53c7d  Table: 1000404a  DAC: 00000015
      Process cryptomgr_test (pid: 1306, stack limit = 0xe423e2f0)
      Stack: (0xe423fd98 to 0xe4240000)
      fd80:                                                       11807fd1 80048544
      fda0: 88005000 e4191a00 e5178040 8039dda0 00000000 00000014 2d676572 e4191008
      fdc0: 88005018 e4191a60 00100100 e4191a00 00000000 8039ce0c e423fea8 00000007
      fde0: e4191a00 e4227000 e5178000 8039ce18 e419183c 80203808 80a94a44 00000006
      fe00: 00000000 80207180 00000000 00000006 e423ff08 00000000 00000007 e5178000
      fe20: e41918a4 80a949b4 8c4844e2 00000000 00000049 74227000 8c4844e2 00000e90
      fe40: 0000000e 74227e90 ffff8c58 80ac29e0 e423fed4 8006a350 8c81625c e423ff5c
      fe60: 00008576 e4002500 00000003 00030010 e4002500 00000003 e5180000 e4002500
      fe80: e5178000 800e6d24 007fffff 00000000 00000010 e4001280 e4002500 60000013
      fea0: 000000d0 804df078 00000000 00000000 00000000 00000000 00000000 00000000
      fec0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
      fee0: 00000000 00000000 e4227000 e4226000 e4753000 e4752000 e40a5000 e40a4000
      ff00: e41e7000 e41e6000 00000000 00000000 00000000 e423ff14 e423ff14 00000000
      ff20: 00000400 804f9080 e5178000 e4db0b40 00000000 e4db0b80 0000047c 00000400
      ff40: 00000000 8020758c 00000400 ffffffff 0000008a 00000000 e4db0b40 80206e00
      ff60: e4049dbc 00000000 00000000 00000003 e423ffa4 80062978 e41a8bfc 00000000
      ff80: 00000000 e4049db4 00000013 e4049db0 00000013 00000000 00000000 00000000
      ffa0: e4db0b40 e4db0b40 80204cbc 00000013 00000000 00000000 00000000 80204cfc
      ffc0: e4049da0 80089544 80040a40 00000000 e4db0b40 00000000 00000000 00000000
      ffe0: e423ffe0 e423ffe0 e4049da0 800894c4 80040a40 80040a40 00000000 00000000
      [<80043240>] (__bug+0x1c/0x28) from [<80048544>] (___dma_single_dev_to_cpu+0x84)
      [<80048544>] (___dma_single_dev_to_cpu+0x84/0x94) from [<8039dda0>] (ahash_fina)
      [<8039dda0>] (ahash_final_ctx+0x180/0x428) from [<8039ce18>] (ahash_final+0xc/0)
      [<8039ce18>] (ahash_final+0xc/0x10) from [<80203808>] (crypto_ahash_op+0x28/0xc)
      [<80203808>] (crypto_ahash_op+0x28/0xc0) from [<80207180>] (test_hash+0x214/0x5)
      [<80207180>] (test_hash+0x214/0x5b8) from [<8020758c>] (alg_test_hash+0x68/0x8c)
      [<8020758c>] (alg_test_hash+0x68/0x8c) from [<80206e00>] (alg_test+0x7c/0x1b8)
      [<80206e00>] (alg_test+0x7c/0x1b8) from [<80204cfc>] (cryptomgr_test+0x40/0x48)
      [<80204cfc>] (cryptomgr_test+0x40/0x48) from [<80089544>] (kthread+0x80/0x88)
      [<80089544>] (kthread+0x80/0x88) from [<80040a40>] (kernel_thread_exit+0x0/0x8)
      Code: e59f0010 e1a01003 eb126a8d e3a03000 (e5833000)
      ---[ end trace d52a403a1d1eaa86 ]---
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarSteve Cornelius <steve.cornelius@freescale.com>
      Signed-off-by: default avatarVictoria Milhoan <vicki.milhoan@freescale.com>
      Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
    • Radim Krčmář's avatar
      KVM: x86: fix lapic.timer_mode on restore · b6ac0695
      Radim Krčmář authored
      lapic.timer_mode was not properly initialized after migration, which
      broke few useful things, like login, by making every sleep eternal.
      Fix this by calling apic_update_lvtt in kvm_apic_post_state_restore.
      There are other slowpaths that update lvtt, so this patch makes sure
      something similar doesn't happen again by calling apic_update_lvtt
      after every modification.
      Cc: stable@vger.kernel.org
      Fixes: f30ebc31
       ("KVM: x86: optimize some accesses to LVTT and SPIV")
      Signed-off-by: default avatarRadim Krčmář <rkrcmar@redhat.com>
      Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
  5. 15 Jun, 2015 11 commits
  6. 14 Jun, 2015 1 commit
    • Linus Torvalds's avatar
      Merge tag 'sound-4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · 2fbbada1
      Linus Torvalds authored
      Pull sound fixes from Takashi Iwai:
       "Most of commits are regression fixes for HD-audio: a few corner case
        fixes for regmap transition, and i915 binding issues.
        In addition, a quirk for another USB-audio device supporting DSD"
      * tag 'sound-4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: hda - Abort the probe without i915 binding for HSW/BDW
        ALSA: hda - Re-add the lost fake mute support
        ALSA: hda - Continue probing even if i915 binding fails
        ALSA: hda - Don't actually write registers for caps overwrites
        ALSA: hda - fix number of devices query on hotplug
        ALSA: usb-audio: add native DSD support for JLsounds I2SoverUSB
  7. 13 Jun, 2015 3 commits
    • Jaedon Shin's avatar
      MPI: MIPS: Fix compilation error with GCC 5.1 · 36f58113
      Jaedon Shin authored
      This patch fixes mips compilation error:
      lib/mpi/generic_mpih-mul1.c: In function 'mpihelp_mul_1':
      lib/mpi/longlong.h:651:2: error: impossible constraint in 'asm'
      Signed-off-by: default avatarJaedon Shin <jaedon.shin@gmail.com>
      Cc: Linux-MIPS <linux-mips@linux-mips.org>
      Patchwork: https://patchwork.linux-mips.org/patch/10546/
      Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
    • Rabin Vincent's avatar
      IRQCHIP: mips-gic: Don't nest calls to do_IRQ() · 1b3ed367
      Rabin Vincent authored
      The GIC chained handlers use do_IRQ() to call the subhandlers.  This
      means that irq_enter() calls get nested, which leads to preempt count
      looking like we're in nested interrupts, which in turn leads to all
      system time being accounted as IRQ time in account_system_time().
      Fix it by using generic_handle_irq().  Since these same functions are
      used in some systems (if cpu_has_veic) from a low-level vectored
      interrupt handler which does not go throught do_IRQ(), we need to do it
      Signed-off-by: default avatarRabin Vincent <rabin.vincent@axis.com>
      Reviewed-by: default avatarAndrew Bresticker <abrestic@chromium.org>
      Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Cc: linux-mips@linux-mips.org
      Cc: tglx@linutronix.de
      Cc: jason@lakedaemon.net
      Patchwork: https://patchwork.linux-mips.org/patch/10545/
      Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · c8d17b45
      Linus Torvalds authored
      Pull networking fixes from David Miller:
       1) Fix uninitialized struct station_info in cfg80211_wireless_stats(),
          from Johannes Berg.
       2) Revert commit attempt to fix ipv6 protocol resubmission, it adds
       3) Endless loops can be created in bridge port lists, fix from Nikolay
       4) Don't WARN_ON() if sk->sk_forward_alloc is non-zero in
          sk_clear_memalloc, it is a legal situation during swap deactivation.
          Fix from Mel Gorman.
       5) Fix order of disabling interrupts and unlocking NAPI in enic driver
          to avoid a race.  From Govindarajulu Varadarajan.
       6) High and low register writes are swapped when programming the start
          of periodic output in igb driver.  From Richard Cochran.
       7) Fix device rename handling in mpls stack, from Robert Shearman.
       8) Do not trigger compaction synchronously when optimistically trying
          to allocate an order 3 page in alloc_skb_with_frags() and
          skb_page_frag_refill().  From Shaohua Li.
       9) Authentication with COOKIE_ECHO is not handled properly in SCTP, fix
          from Marcelo Ricardo Leitner.
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
        Doc: networking: Fix URL for wiki.wireshark.org in udplite.txt
        sctp: allow authenticating DATA chunks that are bundled with COOKIE_ECHO
        net: don't wait for order-3 page allocation
        mpls: handle device renames for per-device sysctls
        net: igb: fix the start time for periodic output signals
        enic: fix memory leak in rq_clean
        enic: check return value for stat dump
        enic: unlock napi busy poll before unmasking intr
        net, swap: Remove a warning and clarify why sk_mem_reclaim is required when deactivating swap
        bridge: fix multicast router rlist endless loop
        tipc: disconnect socket directly after probe failure
        Revert "ipv6: Fix protocol resubmission"
        cfg80211: wext: clear sinfo struct before calling driver
  8. 12 Jun, 2015 5 commits
    • Masanari Iida's avatar
      Doc: networking: Fix URL for wiki.wireshark.org in udplite.txt · b07d4961
      Masanari Iida authored
      This patch fix URL (http to https) for wiki.wireshark.org.
      Signed-off-by: default avatarMasanari Iida <standby24x7@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Marcelo Ricardo Leitner's avatar
      sctp: allow authenticating DATA chunks that are bundled with COOKIE_ECHO · ae36806a
      Marcelo Ricardo Leitner authored
      Currently, we can ask to authenticate DATA chunks and we can send DATA
      chunks on the same packet as COOKIE_ECHO, but if you try to combine
      both, the DATA chunk will be sent unauthenticated and peer won't accept
      it, leading to a communication failure.
      This happens because even though the data was queued after it was
      requested to authenticate DATA chunks, it was also queued before we
      could know that remote peer can handle authenticating, so
      sctp_auth_send_cid() returns false.
      The fix is whenever we set up an active key, re-check send queue for
      chunks that now should be authenticated. As a result, such packet will
      now contain COOKIE_ECHO + AUTH + DATA chunks, in that order.
      Reported-by: default avatarLiu Wei <weliu@redhat.com>
      Signed-off-by: default avatarMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>
      Acked-by: default avatarNeil Horman <nhorman@tuxdriver.com>
      Acked-by: default avatarVlad Yasevich <vyasevich@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.dk/linux-block · b85dfd30
      Linus Torvalds authored
      Pull block layer fixes from Jens Axboe:
       "Remember about a week ago when I sent the last pull request for 4.1?
        Well, I lied.  Now, I don't want to shift the blame, but Dan, Ming,
        and Richard made a liar out of me.
        Here are three small patches that should go into 4.1.  More
        specifically, this pull request contains:
         - A Kconfig dependency for the pmem block driver, so it can't be
           selected if HAS_IOMEM isn't availble.  From Richard Weinberger.
         - A fix for genhd, making the ext_devt_lock softirq safe.  This makes
           lockdep happier, since we also end up grabbing this lock on release
           off the softirq path.  From Dan Williams.
         - A blk-mq software queue release fix from Ming Lei.
        Last two are headed to stable, first fixes an issue introduced in this
      * 'for-linus' of git://git.kernel.dk/linux-block:
        block: pmem: Add dependency on HAS_IOMEM
        block: fix ext_dev_lock lockdep report
        blk-mq: free hctx->ctxs in queue's release handler
    • Linus Torvalds's avatar
      Merge tag 'md/4.1-rc7-fixes' of git://neil.brown.name/md · 7b565d9d
      Linus Torvalds authored
      Pull three more md fixes from Neil Brown:
       "Hasn't been a good cycle for md has it :-(
        The main issue fixed here is a rare race which can result in two
        reshape threads running at once, which doesn't end well.
        Also a minor issue with a write to a sysfs file returning the wrong
        value.  Backports to 4.0-stable are indicated"
      * tag 'md/4.1-rc7-fixes' of git://neil.brown.name/md:
        md: make sure MD_RECOVERY_DONE is clear before starting recovery/resync
        md: Close race when setting 'action' to 'idle'.
        md: don't return 0 from array_state_store
    • Linus Torvalds's avatar
      Merge git://git.infradead.org/intel-iommu · c39f3bc6
      Linus Torvalds authored
      Pull VT-d hardware workarounds from David Woodhouse:
       "This contains a workaround for hardware issues which I *thought* were
        never going to be seen on production hardware.  I'm glad I checked
        that before the 4.1 release...
        Firstly, PASID support is so broken on existing chips that we're just
        going to declare the old capability bit 28 as 'reserved' and change
        the VT-d spec to move PASID support to another bit.  So any existing
        hardware doesn't support SVM; it only sets that (now) meaningless bit
        That patch *wasn't* imperative for 4.1 because we don't have PASID
        support yet.  But *even* the extended context tables are broken — if
        you just enable the wider tables and use none of the new bits in them,
        which is precisely what 4.1 does, you find that translations don't
        work.  It's this problem which I thought was caught in time to be
        fixed before production, but wasn't.
        To avoid triggering this issue, we now *only* enable the extended
        context tables on hardware which also advertises "we have PASID
        support and we actually tested it this time" with the new PASID
        feature bit.
        In addition, I've added an 'intel_iommu=ecs_off' command line
        parameter to allow us to disable it manually if we need to"
      * git://git.infradead.org/intel-iommu:
        iommu/vt-d: Only enable extended context tables if PASID is supported
        iommu/vt-d: Change PASID support to bit 40 of Extended Capability Register