1. 05 6月, 2014 1 次提交
    • I
      x86: Fix list/memory corruption on CPU hotplug · 89f898c1
      Igor Mammedov 提交于
      currently if AP wake up is failed, master CPU marks AP as not
      present in do_boot_cpu() by calling set_cpu_present(cpu, false).
      That leads to following list corruption on the next physical CPU
      hotplug:
      
      [  418.107336] WARNING: CPU: 1 PID: 45 at lib/list_debug.c:33 __list_add+0xbe/0xd0()
      [  418.115268] list_add corruption. prev->next should be next (ffff88003dc57600), but was ffff88003e20c3a0. (prev=ffff88003e20c3a0).
      [  418.123693] Modules linked in: nf_conntrack_netbios_ns nf_conntrack_broadcast ipt_MASQUERADE ip6t_REJECT ipt_REJECT cfg80211 xt_conntrack rfkill ee
      [  418.138979] CPU: 1 PID: 45 Comm: kworker/u10:1 Not tainted 3.14.0-rc6+ #387
      [  418.149989] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2007
      [  418.165750] Workqueue: kacpi_hotplug acpi_hotplug_work_fn
      [  418.166433]  0000000000000021 ffff880038ca7988 ffffffff8159b22d 0000000000000021
      [  418.176460]  ffff880038ca79d8 ffff880038ca79c8 ffffffff8106942c ffff880038ca79e8
      [  418.177453]  ffff88003e20c3a0 ffff88003dc57600 ffff88003e20c3a0 00000000ffffffea
      [  418.178445] Call Trace:
      [  418.185811]  [<ffffffff8159b22d>] dump_stack+0x49/0x5c
      [  418.186440]  [<ffffffff8106942c>] warn_slowpath_common+0x8c/0xc0
      [  418.187192]  [<ffffffff81069516>] warn_slowpath_fmt+0x46/0x50
      [  418.191231]  [<ffffffff8136ef51>] ? acpi_ns_get_node+0xb7/0xc7
      [  418.193889]  [<ffffffff812f796e>] __list_add+0xbe/0xd0
      [  418.196649]  [<ffffffff812e2aa9>] kobject_add_internal+0x79/0x200
      [  418.208610]  [<ffffffff812e2e18>] kobject_add_varg+0x38/0x60
      [  418.213831]  [<ffffffff812e2ef4>] kobject_add+0x44/0x70
      [  418.229961]  [<ffffffff813e2c60>] device_add+0xd0/0x550
      [  418.234991]  [<ffffffff813f0e95>] ? pm_runtime_init+0xe5/0xf0
      [  418.250226]  [<ffffffff813e32be>] device_register+0x1e/0x30
      [  418.255296]  [<ffffffff813e82a3>] register_cpu+0xe3/0x130
      [  418.266539]  [<ffffffff81592be5>] arch_register_cpu+0x65/0x150
      [  418.285845]  [<ffffffff81355c0d>] acpi_processor_hotadd_init+0x5a/0x9b
      ...
      Which is caused by the fact that generic_processor_info() allocates
      logical CPU id by calling:
      
       cpu = cpumask_next_zero(-1, cpu_present_mask);
      
      which returns id of previously failed to wake up CPU, since its
      bit is cleared by do_boot_cpu() and as result register_cpu()
      tries to register another CPU with the same id as already
      present but failed to be onlined CPU.
      
      Taking in account that AP will not do anything if master CPU
      failed to wake it up, there is no reason to mark that AP as not
      present and break next cpu hotplug attempts. As a side effect of
      not marking AP as not present, user would be allowed to online
      it again later.
      
      Also fix memory corruption in acpi_unmap_lsapic()
      
      if during CPU hotplug master CPU failed to wake up AP
      it set percpu x86_cpu_to_apicid to BAD_APICID=0xFFFF for AP.
      
      However following attempt to unplug that CPU will lead to
      out of bound write access to __apicid_to_node[] which is
      32768 items long on x86_64 kernel.
      
      So with above fix of cpu_present_mask make sure that a present
      CPU has a valid APIC ID by not setting x86_cpu_to_apicid
      to BAD_APICID in do_boot_cpu() on failure and allow
      acpi_processor_remove()->acpi_unmap_lsapic() cleanly remove CPU.
      Signed-off-by: NIgor Mammedov <imammedo@redhat.com>
      Acked-by: NToshi Kani <toshi.kani@hp.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Link: http://lkml.kernel.org/r/1401975765-22328-2-git-send-email-imammedo@redhat.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
      89f898c1
  2. 04 6月, 2014 2 次提交
    • Y
      x86: irq: Get correct available vectors for cpu disable · ac2a5539
      Yinghai Lu 提交于
      check_irq_vectors_for_cpu_disable() can overestimate the number of
      available interrupt vectors, so the check for cpu down succeeds, but
      the actual cpu removal fails.
      
      It iterates from FIRST_EXTERNAL_VECTOR to NR_VECTORS, which is wrong
      because the systems vectors are not taken into account.
      
      Limit the search to first_system_vector instead of NR_VECTORS.
      
      The second indicator for vector availability the used_vectors bitmap
      is not taken into account at all. So system vectors,
      e.g. IA32_SYSCALL_VECTOR (0x80) and IRQ_MOVE_CLEANUP_VECTOR (0x20),
      are accounted as available.
      
      Add a check for the used_vectors bitmap and do not account vectors
      which are marked there.
      
      [ tglx: Simplified code. Rewrote changelog and code comments. ]
      Signed-off-by: NYinghai Lu <yinghai@kernel.org>
      Acked-by: NPrarit Bhargava <prarit@redhat.com>
      Cc: Seiji Aguchi <seiji.aguchi@hds.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: K. Y. Srinivasan <kys@microsoft.com>
      Cc: Steven Rostedt (Red Hat) <rostedt@goodmis.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: "Elliott, Robert (Server Storage)" <Elliott@hp.com>
      Cc: x86@kernel.org
      Link: http://lkml.kernel.org/r/1400160305-17774-2-git-send-email-prarit@redhat.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      ac2a5539
    • L
      Merge tag 'sound-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · d2cfd310
      Linus Torvalds 提交于
      Pull sound fixes from Takashi Iwai:
       "A few addition of HD-audio fixups for ALC260 and AD1986A codecs.  All
        marked as stable fixes.
      
        The fixes are pretty local and they are old machines, so quite safe to
        apply"
      
      * tag 'sound-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: hda/realtek - Fix COEF widget NID for ALC260 replacer fixup
        ALSA: hda/realtek - Correction of fixup codes for PB V7900 laptop
        ALSA: hda/analog - Fix silent output on ASUS A8JN
      d2cfd310
  3. 03 6月, 2014 18 次提交
  4. 02 6月, 2014 10 次提交
    • T
      ALSA: hda/realtek - Fix COEF widget NID for ALC260 replacer fixup · 192a98e2
      Takashi Iwai 提交于
      The conversion to a fixup table for Replacer model with ALC260 in
      commit 20f7d928 took the wrong widget NID for COEF setups.  Namely,
      NID 0x1a should have been used instead of NID 0x20, which is the
      common node for all Realtek codecs but ALC260.
      
      Fixes: 20f7d928 ('ALSA: hda/realtek - Replace ALC260 model=replacer with the auto-parser')
      Cc: <stable@vger.kernel.org> [v3.4+]
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      192a98e2
    • R
      ALSA: hda/realtek - Correction of fixup codes for PB V7900 laptop · e30cf2d2
      Ronan Marquet 提交于
      Correcion of wrong fixup entries add in commit ca8f0424 to replace
      static model quirk for PB V7900 laptop (will model).
      
      [note: the removal of ALC260_FIXUP_HP_PIN_0F chain is also needed as a
       part of the fix; otherwise the pin is set up wrongly as a headphone,
       and user-space (PulseAudio) may be wrongly trying to detect the jack
       state -- tiwai]
      
      Fixes: ca8f0424 ('ALSA: hda/realtek - Add the fixup codes for ALC260 model=will')
      Signed-off-by: NRonan Marquet <ronan.marquet@orange.fr>
      Cc: <stable@vger.kernel.org> [v3.4+]
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      e30cf2d2
    • J
      bridge: notify user space after fdb update · c65c7a30
      Jon Maxwell 提交于
      There has been a number incidents recently where customers running KVM have
      reported that VM hosts on different Hypervisors are unreachable. Based on
      pcap traces we found that the bridge was broadcasting the ARP request out
      onto the network. However some NICs have an inbuilt switch which on occasions
      were broadcasting the VMs ARP request back through the physical NIC on the
      Hypervisor. This resulted in the bridge changing ports and incorrectly learning
      that the VMs mac address was external. As a result the ARP reply was directed
      back onto the external network and VM never updated it's ARP cache. This patch
      will notify the bridge command, after a fdb has been updated to identify such
      port toggling.
      Signed-off-by: NJon Maxwell <jmaxwell37@gmail.com>
      Reviewed-by: NJiri Pirko <jiri@resnulli.us>
      Acked-by: NToshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
      Acked-by: NStephen Hemminger <stephen@networkplumber.org>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      c65c7a30
    • A
    • N
      net: fix wrong mac_len calculation for vlans · 4b9b1cdf
      Nikolay Aleksandrov 提交于
      After 1e785f48 ("net: Start with correct mac_len in
      skb_network_protocol") skb->mac_len is used as a start of the
      calculation in skb_network_protocol() but that is not always correct. If
      skb->protocol == 8021Q/AD, usually the vlan header is already inserted
      in the skb (i.e. vlan reorder hdr == 0). Usually when the packet enters
      dev_hard_xmit it has mac_len == 0 so we take 2 bytes from the
      destination mac address (skb->data + VLAN_HLEN) as a type in
      skb_network_protocol() and return vlan_depth == 4. In the case where TSO is
      off, then the mac_len is set but it's == 18 (ETH_HLEN + VLAN_HLEN), so
      skb_network_protocol() returns a type from inside the packet and
      offset == 22. Also make vlan_depth unsigned as suggested before.
      As suggested by Eric Dumazet, move the while() loop in the if() so we
      can avoid additional testing in fast path.
      
      Here are few netperf tests + debug printk's to illustrate:
      cat netperf.tso-on.reorder-on.bugged
      - Vlan -> device (reorder on, default, this case is okay)
      MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to
      192.168.3.1 () port 0 AF_INET
      Recv   Send    Send
      Socket Socket  Message  Elapsed
      Size   Size    Size     Time     Throughput
      bytes  bytes   bytes    secs.    10^6bits/sec
      
       87380  16384  16384    10.00    7111.54
      [   81.605435] skb->len 65226 skb->gso_size 1448 skb->proto 0x800
      skb->mac_len 0 vlan_depth 0 type 0x800
      
      - Vlan -> device (reorder off, bad)
      cat netperf.tso-on.reorder-off.bugged
      MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to
      192.168.3.1 () port 0 AF_INET
      Recv   Send    Send
      Socket Socket  Message  Elapsed
      Size   Size    Size     Time     Throughput
      bytes  bytes   bytes    secs.    10^6bits/sec
      
       87380  16384  16384    10.00     241.35
      [  204.578332] skb->len 1518 skb->gso_size 0 skb->proto 0x8100
      skb->mac_len 0 vlan_depth 4 type 0x5301
      0x5301 are the last two bytes of the destination mac.
      
      And if we stop TSO, we may get even the following:
      [   83.343156] skb->len 2966 skb->gso_size 1448 skb->proto 0x8100
      skb->mac_len 18 vlan_depth 22 type 0xb84
      Because mac_len already accounts for VLAN_HLEN.
      
      After the fix:
      cat netperf.tso-on.reorder-off.fixed
      MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to
      192.168.3.1 () port 0 AF_INET
      Recv   Send    Send
      Socket Socket  Message  Elapsed
      Size   Size    Size     Time     Throughput
      bytes  bytes   bytes    secs.    10^6bits/sec
      
       87380  16384  16384    10.01    5001.46
      [   81.888489] skb->len 65230 skb->gso_size 1448 skb->proto 0x8100
      skb->mac_len 0 vlan_depth 18 type 0x800
      
      CC: Vlad Yasevich <vyasevic@redhat.com>
      CC: Eric Dumazet <eric.dumazet@gmail.com>
      CC: Daniel Borkman <dborkman@redhat.com>
      CC: David S. Miller <davem@davemloft.net>
      
      Fixes:1e785f48 ("net: Start with correct mac_len in
      skb_network_protocol")
      Signed-off-by: NNikolay Aleksandrov <nikolay@redhat.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      4b9b1cdf
    • L
      Linux 3.15-rc8 · fad01e86
      Linus Torvalds 提交于
      fad01e86
    • L
      Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc · 204fe038
      Linus Torvalds 提交于
      Pull powerpc fix from Ben Herrenschmidt:
       "Here's just one trivial patch to wire up sys_renameat2 which I seem to
        have completely missed so far.
      
        (My test build scripts fwd me warnings but miss the ones generated for
        missing syscalls)"
      
      * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
        powerpc: Wire renameat2() syscall
      204fe038
    • L
      Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus · 568180a5
      Linus Torvalds 提交于
      Pull MIPS fixes from Ralf Baechle:
       "A fair number of fixes across the field.  Nothing terribly
        complicated; the one liners in below changelog should be fairly
        descriptive.
      
        Noteworthy is the SB1 change which the result of changes to binutils
        resulting in one big gas warning for most files being assembled as
        well as the asid_cache and branch emulation fixes which fix corruption
        or possible uninteded behaviour of kernel or application code.  The
        remainder of fixes are more platforms or subsystem specific"
      
      * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
        MIPS: R46000: Fix Micro-assembler field overflow for R4600 V2
        MIPS: ptrace: Avoid smp_processor_id() in preemptible code
        MIPS: Lemote 2F: cs5536: mfgpt: use raw locks
        MIPS: SB1: Fix excessive kernel warnings.
        MIPS: RC32434: fix broken PCI resource initialization
        MIPS: malta: memory.c: Initialize the 'memsize' variable
        MIPS: Fix typo when reporting cache and ftlb errors for ImgTec cores
        MIPS: Fix inconsistancy of __NR_Linux_syscalls value
        MIPS: Fix branch emulation of branch likely instructions.
        MIPS: Fix a typo error in AUDIT_ARCH definition
        MIPS: Change type of asid_cache to unsigned long
      568180a5
    • L
      Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 32439700
      Linus Torvalds 提交于
      Pull scheduler fixes from Ingo Molnar:
       "Various fixlets, mostly related to the (root-only) SCHED_DEADLINE
        policy, but also a hotplug bug fix and a fix for a NR_CPUS related
        overallocation bug causing a suspend/resume regression"
      
      * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        sched: Fix hotplug vs. set_cpus_allowed_ptr()
        sched/cpupri: Replace NR_CPUS arrays
        sched/deadline: Replace NR_CPUS arrays
        sched/deadline: Restrict user params max value to 2^63 ns
        sched/deadline: Change sched_getparam() behaviour vs SCHED_DEADLINE
        sched: Disallow sched_attr::sched_policy < 0
        sched: Make sched_setattr() correctly return -EFBIG
      32439700
    • B
      8212f58a
  5. 01 6月, 2014 4 次提交
    • D
      Merge tag 'batman-adv-fix-for-davem' of git://git.open-mesh.org/linux-merge · 6ce995c6
      David S. Miller 提交于
      Included changes:
      - prevent NULL dereference in multicast code
      
      Antonion Quartulli says:
      
      ====================
      pull request net: batman-adv 20140527
      
      here you have another very small fix intended for net/linux-3.15.
      It prevents some multicast functions from dereferencing a NULL pointer.
      (Actually it was nothing more than a typo)
      I hope it is not too late for such a small patch.
      ====================
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      6ce995c6
    • L
      Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · a4bf79eb
      Linus Torvalds 提交于
      Pull core futex/rtmutex fixes from Thomas Gleixner:
       "Three fixlets for long standing issues in the futex/rtmutex code
        unearthed by Dave Jones syscall fuzzer:
      
         - Add missing early deadlock detection checks in the futex code
         - Prevent user space from attaching a futex to kernel threads
         - Make the deadlock detector of rtmutex work again
      
        Looks large, but is more comments than code change"
      
      * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        rtmutex: Fix deadlock detector for real
        futex: Prevent attaching to kernel threads
        futex: Add another early deadlock detection check
      a4bf79eb
    • L
      Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux · 80e06794
      Linus Torvalds 提交于
      Pull drm fixes from Dave Airlie:
       "Mostly quiet now:
      
        i915:
          fixing userspace visiblie issues, all stable marked
      
        radeon:
          one more pll fix, two crashers, one suspend/resume regression"
      
      * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
        drm/radeon: Resume fbcon last
        drm/radeon: only allocate necessary size for vm bo list
        drm/radeon: don't allow RADEON_GEM_DOMAIN_CPU for command submission
        drm/radeon: avoid crash if VM command submission isn't available
        drm/radeon: lower the ref * post PLL maximum once more
        drm/i915: Prevent negative relocation deltas from wrapping
        drm/i915: Only copy back the modified fields to userspace from execbuffer
        drm/i915: Fix dynamic allocation of physical handles
      80e06794
    • L
      dcache: add missing lockdep annotation · 9f12600f
      Linus Torvalds 提交于
      lock_parent() very much on purpose does nested locking of dentries, and
      is careful to maintain the right order (lock parent first).  But because
      it didn't annotate the nested locking order, lockdep thought it might be
      a deadlock on d_lock, and complained.
      
      Add the proper annotation for the inner locking of the child dentry to
      make lockdep happy.
      
      Introduced by commit 046b961b ("shrink_dentry_list(): take parent's
      ->d_lock earlier").
      Reported-and-tested-by: NJosh Boyer <jwboyer@fedoraproject.org>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      9f12600f
  6. 31 5月, 2014 5 次提交