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2016-02-18tcp/dccp: fix another race at listener dismantleEric Dumazet
Ilya reported following lockdep splat: kernel: ========================= kernel: [ BUG: held lock freed! ] kernel: 4.5.0-rc1-ceph-00026-g5e0a311 #1 Not tainted kernel: ------------------------- kernel: swapper/5/0 is freeing memory ffff880035c9d200-ffff880035c9dbff, with a lock still held there! kernel: (&(&queue->rskq_lock)->rlock){+.-...}, at: [<ffffffff816f6a88>] inet_csk_reqsk_queue_add+0x28/0xa0 kernel: 4 locks held by swapper/5/0: kernel: #0: (rcu_read_lock){......}, at: [<ffffffff8169ef6b>] netif_receive_skb_internal+0x4b/0x1f0 kernel: #1: (rcu_read_lock){......}, at: [<ffffffff816e977f>] ip_local_deliver_finish+0x3f/0x380 kernel: #2: (slock-AF_INET){+.-...}, at: [<ffffffff81685ffb>] sk_clone_lock+0x19b/0x440 kernel: #3: (&(&queue->rskq_lock)->rlock){+.-...}, at: [<ffffffff816f6a88>] inet_csk_reqsk_queue_add+0x28/0xa0 To properly fix this issue, inet_csk_reqsk_queue_add() needs to return to its callers if the child as been queued into accept queue. We also need to make sure listener is still there before calling sk->sk_data_ready(), by holding a reference on it, since the reference carried by the child can disappear as soon as the child is put on accept queue. Reported-by: Ilya Dryomov <idryomov@gmail.com> Fixes: ebb516af60e1 ("tcp/dccp: fix race at listener dismantle phase") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-18route: check and remove route cache when we get routeXin Long
Since the gc of ipv4 route was removed, the route cached would has no chance to be removed, and even it has been timeout, it still could be used, cause no code to check it's expires. Fix this issue by checking and removing route cache when we get route. Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-17net/mlx4_core: Set UAR page size to 4KB regardless of system page sizeHuy Nguyen
problem description: The current code sets UAR page size equal to system page size. The ConnectX-3 and ConnectX-3 Pro HWs require minimum 128 UAR pages. The mlx4 kernel drivers are not loaded if there is less than 128 UAR pages. solution: Always set UAR page to 4KB. This allows more UAR pages if the OS has PAGE_SIZE larger than 4KB. For example, PowerPC kernel use 64KB system page size, with 4MB uar region, there are 4MB/2/64KB = 32 uars (half for uar, half for blueflame). This does not meet minimum 128 UAR pages requirement. With 4KB UAR page, there are 4MB/2/4KB = 512 uars which meet the minimum requirement. Note that only codes in mlx4_core that deal with firmware know that uar page size is 4KB. Codes that deal with usr page in cq and qp context (mlx4_ib, mlx4_en and part of mlx4_core) still have the same assumption that uar page size equals to system page size. Note that with this implementation, on 64KB system page size kernel, there are 16 uars per system page but only one uars is used. The other 15 uars are ignored because of the above assumption. Regarding SR-IOV, mlx4_core in hypervisor will set the uar page size to 4KB and mlx4_core code in virtual OS will obtain the uar page size from firmware. Regarding backward compatibility in SR-IOV, if hypervisor has this new code, the virtual OS must be updated. If hypervisor has old code, and the virtual OS has this new code, the new code will be backward compatible with the old code. If the uar size is big enough, this new code in VF continues to work with 64 KB uar page size (on PowerPc kernel). If the uar size does not meet 128 uars requirement, this new code not loaded in VF and print the same error message as the old code in Hypervisor. Signed-off-by: Huy Nguyen <huyn@mellanox.com> Reviewed-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-16net/mlx5: Use offset based reserved field names in the IFC header fileMatan Barak
mlx5_ifc.h is a header file representing the API and ABI between the driver to the firmware and hardware. This file is used from both the mlx5_ib and mlx5_core drivers. Previously, this file used incrementing counter to indicate reserved fields, for example: struct mlx5_ifc_odp_per_transport_service_cap_bits { u8 send[0x1]; u8 receive[0x1]; u8 write[0x1]; u8 read[0x1]; u8 reserved_0[0x1]; u8 srq_receive[0x1]; u8 reserved_1[0x1a]; }; If one developer implements through net-next feature A that uses reserved_0, they replace it with featureA and renames reserved_1 to reserved_0. In the same kernel cycle, a 2nd developer could implement feature B through the rdma tree, that uses reserved_1 and split it to featureB and a smaller reserved_1 field. This will cause a conflict when the two trees are merged. The source of this conflict is that the 1st developer changed *all* reserved fields. As Linus suggested, we change the layout of structs to: struct mlx5_ifc_odp_per_transport_service_cap_bits { u8 send[0x1]; u8 receive[0x1]; u8 write[0x1]; u8 read[0x1]; u8 reserved_at_4[0x1]; u8 srq_receive[0x1]; u8 reserved_at_6[0x1a]; }; This makes the conflicts much more rare and preserves the locality of changes. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Alaa Hleihel <alaa@mellanox.com> Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: 1) Fix BPF handling of branch offset adjustmnets on backjumps, from Daniel Borkmann. 2) Make sure selinux knows about SOCK_DESTROY netlink messages, from Lorenzo Colitti. 3) Fix openvswitch tunnel mtu regression, from David Wragg. 4) Fix ICMP handling of TCP sockets in syn_recv state, from Eric Dumazet. 5) Fix SCTP user hmacid byte ordering bug, from Xin Long. 6) Fix recursive locking in ipv6 addrconf, from Subash Abhinov Kasiviswanathan. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: bpf: fix branch offset adjustment on backjumps after patching ctx expansion vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices geneve: Relax MTU constraints vxlan: Relax MTU constraints flow_dissector: Fix unaligned access in __skb_flow_dissector when used by eth_get_headlen of: of_mdio: Add marvell, 88e1145 to whitelist of PHY compatibilities. selinux: nlmsgtab: add SOCK_DESTROY to the netlink mapping tables sctp: translate network order to host order when users get a hmacid enic: increment devcmd2 result ring in case of timeout tg3: Fix for tg3 transmit queue 0 timed out when too many gso_segs net:Add sysctl_max_skb_frags tcp: do not drop syn_recv on all icmp reports ipv6: fix a lockdep splat unix: correctly track in-flight fds in sending process user_struct update be2net maintainers' email addresses dwc_eth_qos: Reset hardware before PHY start ipv6: addrconf: Fix recursive spin lock call
2016-02-10Merge branch 'for-4.5-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata Pull libata fixes from Tejun Heo: - PORTS_IMPL workaround for very early ahci controllers is misbehaving on new systems. Disabled on recent ahci versions. - Old-style PIO state machine had a horrible locking problem. Don't know how we've been getting away this far. Fixed. - Other device specific updates. * 'for-4.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: ahci: Intel DNV device IDs SATA libata: fix sff host state machine locking while polling libata-sff: use WARN instead of BUG on illegal host state machine state libata: disable forced PORTS_IMPL for >= AHCI 1.3 libata: blacklist a Viking flash model for MWDMA corruption drivers: ata: wake port before DMA stop for ALPM
2016-02-10Merge branch 'for-4.5-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup fixes from Tejun Heo: - The destruction path of cgroup objects are asynchronous and multi-staged and some of them ended up destroying parents before children leading to failures in cpu and memory controllers. Ensure that parents are always destroyed after children. - cpuset mm node migration was performed synchronously while holding threadgroup and cgroup mutexes and the recent threadgroup locking update resulted in a possible deadlock. The migration is best effort and shouldn't have been performed under those locks to begin with. Made asynchronous. - Minor documentation fix. * 'for-4.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: Documentation: cgroup: Fix 'cgroup-legacy' -> 'cgroup-v1' cgroup: make sure a parent css isn't freed before its children cgroup: make sure a parent css isn't offlined before its children cpuset: make mm migration asynchronous
2016-02-10Merge branch 'for-4.5-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq Pull workqueue fixes from Tejun Heo: "Workqueue fixes for v4.5-rc3. - Remove a spurious triggering of flush dependency warning. - Officially break local execution guarantee of unbound work items and add a debug feature to flush out usages which depend on it. - Work around CPU -> NODE mapping becoming invalid on CPU offline. The branch is young but pushing out early as stable kernels are being affected" * 'for-4.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: handle NUMA_NO_NODE for unbound pool_workqueue lookup workqueue: implement "workqueue.debug_force_rr_cpu" debug feature workqueue: schedule WORK_CPU_UNBOUND work on wq_unbound_cpumask CPUs Revert "workqueue: make sure delayed work run in local cpu" workqueue: skip flush dependency checks for legacy workqueues
2016-02-10vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devicesDavid Wragg
Prior to 4.3, openvswitch tunnel vports (vxlan, gre and geneve) could transmit vxlan packets of any size, constrained only by the ability to send out the resulting packets. 4.3 introduced netdevs corresponding to tunnel vports. These netdevs have an MTU, which limits the size of a packet that can be successfully encapsulated. The default MTU values are low (1500 or less), which is awkwardly small in the context of physical networks supporting jumbo frames, and leads to a conspicuous change in behaviour for userspace. Instead, set the MTU on openvswitch-created netdevs to be the relevant maximum (i.e. the maximum IP packet size minus any relevant overhead), effectively restoring the behaviour prior to 4.3. Signed-off-by: David Wragg <david@weave.works> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-09Merge tag 'fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull module fixes from Rusty Russell: "Fix for async_probe module param added in 4.3 (clearly not widely used yet), and a much more interesting kallsyms race which has been around approximately forever. This fix is more invasive, and will require some care in backporting, but I hated all the bandaids I could think of, so... There are some more coming, which are only for breakages introduced this cycle (livepatch), but wanted these in now" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: modules: fix longstanding /proc/kallsyms vs module insertion race. module: wrapper for symbol name. modules: fix modparam async_probe request
2016-02-09net:Add sysctl_max_skb_fragsHans Westgaard Ry
Devices may have limits on the number of fragments in an skb they support. Current codebase uses a constant as maximum for number of fragments one skb can hold and use. When enabling scatter/gather and running traffic with many small messages the codebase uses the maximum number of fragments and may thereby violate the max for certain devices. The patch introduces a global variable as max number of fragments. Signed-off-by: Hans Westgaard Ry <hans.westgaard.ry@oracle.com> Reviewed-by: Håkon Bugge <haakon.bugge@oracle.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-09tcp: do not drop syn_recv on all icmp reportsEric Dumazet
Petr Novopashenniy reported that ICMP redirects on SYN_RECV sockets were leading to RST. This is of course incorrect. A specific list of ICMP messages should be able to drop a SYN_RECV. For instance, a REDIRECT on SYN_RECV shall be ignored, as we do not hold a dst per SYN_RECV pseudo request. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=111751 Fixes: 079096f103fa ("tcp/dccp: install syn_recv requests into ehash table") Reported-by: Petr Novopashenniy <pety@rusnet.ru> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-08unix: correctly track in-flight fds in sending process user_structHannes Frederic Sowa
The commit referenced in the Fixes tag incorrectly accounted the number of in-flight fds over a unix domain socket to the original opener of the file-descriptor. This allows another process to arbitrary deplete the original file-openers resource limit for the maximum of open files. Instead the sending processes and its struct cred should be credited. To do so, we add a reference counted struct user_struct pointer to the scm_fp_list and use it to account for the number of inflight unix fds. Fixes: 712f4aad406bb1 ("unix: properly account for FDs passed over unix sockets") Reported-by: David Herrmann <dh.herrmann@gmail.com> Cc: David Herrmann <dh.herrmann@gmail.com> Cc: Willy Tarreau <w@1wt.eu> Cc: Linus Torvalds <torvalds@linux-foundation.org> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-05Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge fixes from Andrew Morton: "22 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (22 commits) epoll: restrict EPOLLEXCLUSIVE to POLLIN and POLLOUT radix-tree: fix oops after radix_tree_iter_retry MAINTAINERS: trim the file triggers for ABI/API dax: dirty inode only if required thp: make deferred_split_scan() work again mm: replace vma_lock_anon_vma with anon_vma_lock_read/write ocfs2/dlm: clear refmap bit of recovery lock while doing local recovery cleanup um: asm/page.h: remove the pte_high member from struct pte_t mm, hugetlb: don't require CMA for runtime gigantic pages mm/hugetlb: fix gigantic page initialization/allocation mm: downgrade VM_BUG in isolate_lru_page() to warning mempolicy: do not try to queue pages from !vma_migratable() mm, vmstat: fix wrong WQ sleep when memory reclaim doesn't make any progress vmstat: make vmstat_update deferrable mm, vmstat: make quiet_vmstat lighter mm/Kconfig: correct description of DEFERRED_STRUCT_PAGE_INIT memblock: don't mark memblock_phys_mem_size() as __init dump_stack: avoid potential deadlocks mm: validate_mm browse_rb SMP race condition m32r: fix build failure due to SMP and MMU ...
2016-02-05Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client Pull Ceph fixes from Sage Weil: "We have a few wire protocol compatibility fixes, ports of a few recent CRUSH mapping changes, and a couple error path fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: libceph: MOSDOpReply v7 encoding libceph: advertise support for TUNABLES5 crush: decode and initialize chooseleaf_stable crush: add chooseleaf_stable tunable crush: ensure take bucket value is valid crush: ensure bucket id is valid before indexing buckets array ceph: fix snap context leak in error path ceph: checking for IS_ERR instead of NULL
2016-02-05Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull drm fixes from Dave Airlie: "Fixes all over the place: - amdkfd: two static checker fixes - mst: a bunch of static checker and spec/hw interaction fixes - amdgpu: fix Iceland hw properly, and some fiji bugs, along with some write-combining fixes. - exynos: some regression fixes - adv7511: fix some EDID reading issues" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (38 commits) drm/dp/mst: deallocate payload on port destruction drm/dp/mst: Reverse order of MST enable and clearing VC payload table. drm/dp/mst: move GUID storage from mgr, port to only mst branch drm/dp/mst: change MST detection scheme drm/dp/mst: Calculate MST PBN with 31.32 fixed point drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil drm/mst: Add range check for max_payloads during init drm/mst: Don't ignore the MST PBN self-test result drm: fix missing reference counting decrease drm/amdgpu: disable uvd and vce clockgating on Fiji drm/amdgpu: remove exp hardware support from iceland drm/amdgpu: load MEC ucode manually on iceland drm/amdgpu: don't load MEC2 on topaz drm/amdgpu: drop topaz support from gmc8 module drm/amdgpu: pull topaz gmc bits into gmc_v7 drm/amdgpu: The VI specific EXE bit should only apply to GMC v8.0 above drm/amdgpu: iceland use CI based MC IP drm/amdgpu: move gmc7 support out of CIK dependency drm/amdgpu/gfx7: enable cp inst/reg error interrupts drm/amdgpu/gfx8: enable cp inst/reg error interrupts ...
2016-02-05Merge tag 'pm+acpi-4.5-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management and ACPI fixes from Rafael Wysocki: "These are: a fix for a recently introduced false-positive warnings about PM domain pointers being changed inappropriately (harmless but annoying), an MCH size workaround quirk for one more platform, a compiler warning fix (generic power domains framework), an ACPI LPSS (Intel SoCs) driver fixup and a cleanup of the ACPI CPPC core code. Specifics: - PM core fix to avoid false-positive warnings generated when the pm_domain field is cleared for a device that appears to be bound to a driver (Rafael Wysocki). - New MCH size workaround quirk for Intel Haswell-ULT (Josh Boyer). - Fix for an "unused function" compiler warning in the generic power domains framework (Ulf Hansson). - Fixup for the ACPI driver for Intel SoCs (acpi-lpss) to set the PM domain pointer of a device properly in one place that was overlooked by a recent PM core update (Andy Shevchenko). - Removal of a redundant function declaration in the ACPI CPPC core code (Timur Tabi)" * tag 'pm+acpi-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM: Avoid false-positive warnings in dev_pm_domain_set() PM / Domains: Silence compiler warning for an unused function ACPI / CPPC: remove redundant mbox_send_message() declaration ACPI / LPSS: set PM domain via helper setter PNP: Add Haswell-ULT to Intel MCH size workaround
2016-02-05radix-tree: fix oops after radix_tree_iter_retryKonstantin Khlebnikov
Helper radix_tree_iter_retry() resets next_index to the current index. In following radix_tree_next_slot current chunk size becomes zero. This isn't checked and it tries to dereference null pointer in slot. Tagged iterator is fine because retry happens only at slot 0 where tag bitmask in iter->tags is filled with single bit. Fixes: 46437f9a554f ("radix-tree: fix race in gang lookup") Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ohad Ben-Cohen <ohad@wizery.com> Cc: Jeremiah Mahler <jmmahler@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-02-05mm: replace vma_lock_anon_vma with anon_vma_lock_read/writeKonstantin Khlebnikov
Sequence vma_lock_anon_vma() - vma_unlock_anon_vma() isn't safe if anon_vma appeared between lock and unlock. We have to check anon_vma first or call anon_vma_prepare() to be sure that it's here. There are only few users of these legacy helpers. Let's get rid of them. This patch fixes anon_vma lock imbalance in validate_mm(). Write lock isn't required here, read lock is enough. And reorders expand_downwards/expand_upwards: security_mmap_addr() and wrapping-around check don't have to be under anon vma lock. Link: https://lkml.kernel.org/r/CACT4Y+Y908EjM2z=706dv4rV6dWtxTLK9nFg9_7DhRMLppBo2g@mail.gmail.com Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com> Reported-by: Dmitry Vyukov <dvyukov@google.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-02-05mm, hugetlb: don't require CMA for runtime gigantic pagesVlastimil Babka
Commit 944d9fec8d7a ("hugetlb: add support for gigantic page allocation at runtime") has added the runtime gigantic page allocation via alloc_contig_range(), making this support available only when CONFIG_CMA is enabled. Because it doesn't depend on MIGRATE_CMA pageblocks and the associated infrastructure, it is possible with few simple adjustments to require only CONFIG_MEMORY_ISOLATION instead of full CONFIG_CMA. After this patch, alloc_contig_range() and related functions are available and used for gigantic pages with just CONFIG_MEMORY_ISOLATION enabled. Note CONFIG_CMA selects CONFIG_MEMORY_ISOLATION. This allows supporting runtime gigantic pages without the CMA-specific checks in page allocator fastpaths. Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-02-05Merge tag 'media/v4.5-3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media fixes from Mauro Carvalho Chehab: - vb2: fix a vb2_thread regression and DVB read() breakages - vsp1: fix compilation and links creation - s5k6a3: Fix VIDIOC_SUBDEV_G_FMT ioctl for TRY format - exynos4-is: fix a build issue, format negotiation and sensor detection - Fix a regression with pvrusb2 and ir-kbd-i2c - atmel-isi: fix debug message which only show the first format - tda1004x: fix a tuning bug if G_PROPERTY is called too early - saa7134-alsa: fix a bug at device unbinding/driver removal - Fix build of one driver if !HAS_DMA - soc_camera: cleanup control device on async_unbind * tag 'media/v4.5-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: [media] saa7134-alsa: Only frees registered sound cards [media] vb2-core: call threadio->fnc() if !VB2_BUF_STATE_ERROR [media] vb2: fix nasty vb2_thread regression [media] tda1004x: only update the frontend properties if locked [media] media: i2c: Don't export ir-kbd-i2c module alias [media] exynos4-is: make VIDEO_SAMSUNG_EXYNOS4_IS tristate [media] media: Kconfig: add dependency of HAS_DMA [media] exynos4-is: Wait for 100us before opening sensor [media] exynos4-is: Open shouldn't fail when sensor entity is not linked [media] s5k6a3: Fix VIDIOC_SUBDEV_G_FMT ioctl for TRY format [media] exynos4-is: fix a format string bug [media] drivers/media: vsp1_video: fix compile error [media] atmel-isi: fix debug message which only show the first format [media] soc_camera: cleanup control device on async_unbind [media] v4l: vsp1: Fix wrong entities links creation
2016-02-05Merge tag 'sound-4.5-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "This was a busy week and I had to prepare a pile of duct tapes for the bugs reported by syzkaller fuzzer in wide range of ALSA core APIs: timer, rawmidi, sequencer, and PCM OSS emulation. Let's see how many other holes we need to plug. Besides that, a few usual boring stuff, HD- and USB-audio quirks, have been added" * tag 'sound-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: timer: Fix leftover link at closing ALSA: seq: Fix lockdep warnings due to double mutex locks ALSA: rawmidi: Fix race at copying & updating the position ALSA: rawmidi: Make snd_rawmidi_transmit() race-free ALSA: hda - Add fixup for Mac Mini 7,1 model ALSA: hda/realtek - Support headset mode for ALC225 ALSA: hda/realtek - Support Dell headset mode for ALC225 ALSA: hda/realtek - New codec support of ALC225 ALSA: timer: Sync timer deletion at closing the system timer ALSA: timer: Fix link corruption due to double start or stop ALSA: seq: Fix yet another races among ALSA timer accesses ALSA: pcm: Fix potential deadlock in OSS emulation ALSA: rawmidi: Remove kernel WARNING for NULL user-space buffer check ALSA: seq: Fix race at closing in virmidi driver ALSA: emu10k1: correctly handling failed thread creation ALSA: usb-audio: Add quirk for Microsoft LifeCam HD-6000 ALSA: usb-audio: Add native DSD support for PS Audio NuWave DAC ALSA: usb-audio: Fix OPPO HA-1 vendor ID
2016-02-05Merge branch 'drm-fixes-mst' of git://people.freedesktop.org/~airlied/linux ↵Dave Airlie
into drm-fixes displayport multistream fixes from AMD. * 'drm-fixes-mst' of git://people.freedesktop.org/~airlied/linux: drm/dp/mst: deallocate payload on port destruction drm/dp/mst: Reverse order of MST enable and clearing VC payload table. drm/dp/mst: move GUID storage from mgr, port to only mst branch drm/dp/mst: change MST detection scheme drm/dp/mst: Calculate MST PBN with 31.32 fixed point drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil drm/mst: Add range check for max_payloads during init drm/mst: Don't ignore the MST PBN self-test result drm: fix missing reference counting decrease
2016-02-05drm/dp/mst: move GUID storage from mgr, port to only mst branchHersen Wu
Previous implementation does not handle case below: boot up one MST branch to DP connector of ASIC. After boot up, hot plug 2nd MST branch to DP output of 1st MST, GUID is not created for 2nd MST branch. When downstream port of 2nd MST branch send upstream request, it fails because 2nd MST branch GUID is not available. New Implementation: only create GUID for MST branch and save it within Branch. Signed-off-by: Hersen Wu <hersenxs.wu@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Cc: stable@vger.kernel.org Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-02-05drm: Add drm_fixp_from_fraction and drm_fixp2int_ceilHarry Wentland
drm_fixp_from_fraction allows us to create a fixed point directly from a fraction, rather than creating fixed point values and dividing later. This avoids overflow of our 64 bit value for large numbers. drm_fixp2int_ceil allows us to return the ceiling of our fixed point value. [airlied: squash Jordan's fix] 32-bit-build-fix: Jordan Lazare <Jordan.Lazare@amd.com> Signed-off-by: Harry Wentland <harry.wentland@amd.com> Cc: stable@vger.kernel.org Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-02-05Merge branch 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie
into drm-fixes - fix and enable iceland/topaz support - handle WC on platforms that don't support it * 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux: drm/amdgpu: disable uvd and vce clockgating on Fiji drm/amdgpu: remove exp hardware support from iceland drm/amdgpu: load MEC ucode manually on iceland drm/amdgpu: don't load MEC2 on topaz drm/amdgpu: drop topaz support from gmc8 module drm/amdgpu: pull topaz gmc bits into gmc_v7 drm/amdgpu: The VI specific EXE bit should only apply to GMC v8.0 above drm/amdgpu: iceland use CI based MC IP drm/amdgpu: move gmc7 support out of CIK dependency drm/amdgpu/gfx7: enable cp inst/reg error interrupts drm/amdgpu/gfx8: enable cp inst/reg error interrupts drm/amdgpu: mask out WC from BO on unsupported arches drm/radeon: mask out WC from BO on unsupported arches drm: add helper to check for wc memory support drm/amdgpu: no need to load MC firmware on fiji
2016-02-04libceph: MOSDOpReply v7 encodingIlya Dryomov
Empty request_redirect_t (struct ceph_request_redirect in the kernel client) is now encoded with a bool. NEW_OSDOPREPLY_ENCODING feature bit overlaps with already supported CRUSH_TUNABLES5. Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Sage Weil <sage@redhat.com>
2016-02-04libceph: advertise support for TUNABLES5Ilya Dryomov
Add TUNABLES5 feature (chooseleaf_stable tunable) to a set of features supported by default. Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Sage Weil <sage@redhat.com>
2016-02-04crush: add chooseleaf_stable tunableIlya Dryomov
Add a tunable to fix the bug that chooseleaf may cause unnecessary pg migrations when some device fails. Reflects ceph.git commit fdb3f664448e80d984470f32f04e2e6f03ab52ec. Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Sage Weil <sage@redhat.com>
2016-02-04[media] vb2: fix nasty vb2_thread regressionHans Verkuil
The vb2_thread implementation was made generic and was moved from videobuf2-v4l2.c to videobuf2-core.c in commit af3bac1a. Unfortunately that clearly was never tested since it broke read() causing NULL address references. The root cause was confused handling of vb2_buffer vs v4l2_buffer (the pb pointer in various core functions). The v4l2_buffer no longer exists after moving the code into the core and it is no longer needed. However, the vb2_thread code passed a pointer to a vb2_buffer to the core functions were a v4l2_buffer pointer was expected and vb2_thread expected that the vb2_buffer fields would be filled in correctly. This is obviously wrong since v4l2_buffer != vb2_buffer. Note that the pb pointer is a void pointer, so no type-checking took place. This patch fixes this problem: 1) allow pb to be NULL for vb2_core_(d)qbuf. The vb2_thread code will use a NULL pointer here since they don't care about v4l2_buffer anyway. 2) let vb2_core_dqbuf pass back the index of the received buffer. This is all vb2_thread needs: this index is the index into the q->bufs array and vb2_thread just gets the vb2_buffer from there. 3) the fileio->b pointer (that originally contained a v4l2_buffer) is removed altogether since it is no longer needed. Tested with vivid and the cobalt driver. Cc: stable@vger.kernel.org # Kernel >= 4.3 Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reported-by: Matthias Schwarzott <zzam@gentoo.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2016-02-03Merge branch 'mymd/for-next' into mymd/for-linusShaohua Li
2016-02-03Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge fixes from Andrew Morton: "18 fixes" [ The 18 fixes turned into 17 commits, because one of the fixes was a fix for another patch in the series that I just folded in by editing the patch manually - hopefully correctly - Linus ] * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm: fix memory leak in copy_huge_pmd() drivers/hwspinlock: fix race between radix tree insertion and lookup radix-tree: fix race in gang lookup mm/vmpressure.c: fix subtree pressure detection mm: polish virtual memory accounting mm: warn about VmData over RLIMIT_DATA Documentation: cgroup-v2: add memory.stat::sock description mm: memcontrol: drop superfluous entry in the per-memcg stats array drivers/scsi/sg.c: mark VMA as VM_IO to prevent migration proc: revert /proc/<pid>/maps [stack:TID] annotation numa: fix /proc/<pid>/numa_maps for hugetlbfs on s390 MAINTAINERS: update Seth email ocfs2/cluster: fix memory leak in o2hb_region_release lib/test-string_helpers.c: fix and improve string_get_size() tests thp: limit number of object to scan on deferred_split_scan() thp: change deferred_split_count() to return number of THP in queue thp: make split_queue per-node
2016-02-03Merge tag 'devicetree-fixes-for-4.5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull DeviceTree fixes from Rob Herring: - Fix build error with *_OF_DECLARE() when used in modules - Add missing platform maintainers for dts files in MAINTAINERS * tag 'devicetree-fixes-for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: of: drop symbols declared by _OF_DECLARE() from modules MAINTAINERS: Add missing platform maintainers for dts files
2016-02-03radix-tree: fix race in gang lookupMatthew Wilcox
If the indirect_ptr bit is set on a slot, that indicates we need to redo the lookup. Introduce a new function radix_tree_iter_retry() which forces the loop to retry the lookup by setting 'slot' to NULL and turning the iterator back to point at the problematic entry. This is a pretty rare problem to hit at the moment; the lookup has to race with a grow of the radix tree from a height of 0. The consequences of hitting this race are that gang lookup could return a pointer to a radix_tree_node instead of a pointer to whatever the user had inserted in the tree. Fixes: cebbd29e1c2f ("radix-tree: rewrite gang lookup using iterator") Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ohad Ben-Cohen <ohad@wizery.com> Cc: Konstantin Khlebnikov <khlebnikov@openvz.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-02-03mm: polish virtual memory accountingKonstantin Khlebnikov
* add VM_STACK as alias for VM_GROWSUP/DOWN depending on architecture * always account VMAs with flag VM_STACK as stack (as it was before) * cleanup classifying helpers * update comments and documentation Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com> Tested-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-02-03mm: memcontrol: drop superfluous entry in the per-memcg stats arrayJohannes Weiner
MEM_CGROUP_STAT_NSTATS is just a delimiter for cgroup1 statistics, not an actual array entry. Reuse it for the first cgroup2 stat entry, like in the event array. Fixes: b2807f07f4f8 ("mm: memcontrol: add "sock" to cgroup2 memory.stat") Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Vladimir Davydov <vdavydov@virtuozzo.com> Cc: Michal Hocko <mhocko@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-02-03proc: revert /proc/<pid>/maps [stack:TID] annotationJohannes Weiner
Commit b76437579d13 ("procfs: mark thread stack correctly in proc/<pid>/maps") added [stack:TID] annotation to /proc/<pid>/maps. Finding the task of a stack VMA requires walking the entire thread list, turning this into quadratic behavior: a thousand threads means a thousand stacks, so the rendering of /proc/<pid>/maps needs to look at a million combinations. The cost is not in proportion to the usefulness as described in the patch. Drop the [stack:TID] annotation to make /proc/<pid>/maps (and /proc/<pid>/numa_maps) usable again for higher thread counts. The [stack] annotation inside /proc/<pid>/task/<tid>/maps is retained, as identifying the stack VMA there is an O(1) operation. Siddesh said: "The end users needed a way to identify thread stacks programmatically and there wasn't a way to do that. I'm afraid I no longer remember (or have access to the resources that would aid my memory since I changed employers) the details of their requirement. However, I did do this on my own time because I thought it was an interesting project for me and nobody really gave any feedback then as to its utility, so as far as I am concerned you could roll back the main thread maps information since the information is available in the thread-specific files" Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Cc: Siddhesh Poyarekar <siddhesh.poyarekar@gmail.com> Cc: Shaohua Li <shli@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-02-03thp: make split_queue per-nodeKirill A. Shutemov
Andrea Arcangeli suggested to make split queue per-node to improve scalability. Let's do it. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Suggested-by: Andrea Arcangeli <aarcange@redhat.com> Reviewed-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: Jerome Marchand <jmarchan@redhat.com> Cc: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-02-03ALSA: rawmidi: Make snd_rawmidi_transmit() race-freeTakashi Iwai
A kernel WARNING in snd_rawmidi_transmit_ack() is triggered by syzkaller fuzzer: WARNING: CPU: 1 PID: 20739 at sound/core/rawmidi.c:1136 Call Trace: [< inline >] __dump_stack lib/dump_stack.c:15 [<ffffffff82999e2d>] dump_stack+0x6f/0xa2 lib/dump_stack.c:50 [<ffffffff81352089>] warn_slowpath_common+0xd9/0x140 kernel/panic.c:482 [<ffffffff813522b9>] warn_slowpath_null+0x29/0x30 kernel/panic.c:515 [<ffffffff84f80bd5>] snd_rawmidi_transmit_ack+0x275/0x400 sound/core/rawmidi.c:1136 [<ffffffff84fdb3c1>] snd_virmidi_output_trigger+0x4b1/0x5a0 sound/core/seq/seq_virmidi.c:163 [< inline >] snd_rawmidi_output_trigger sound/core/rawmidi.c:150 [<ffffffff84f87ed9>] snd_rawmidi_kernel_write1+0x549/0x780 sound/core/rawmidi.c:1223 [<ffffffff84f89fd3>] snd_rawmidi_write+0x543/0xb30 sound/core/rawmidi.c:1273 [<ffffffff817b0323>] __vfs_write+0x113/0x480 fs/read_write.c:528 [<ffffffff817b1db7>] vfs_write+0x167/0x4a0 fs/read_write.c:577 [< inline >] SYSC_write fs/read_write.c:624 [<ffffffff817b50a1>] SyS_write+0x111/0x220 fs/read_write.c:616 [<ffffffff86336c36>] entry_SYSCALL_64_fastpath+0x16/0x7a arch/x86/entry/entry_64.S:185 Also a similar warning is found but in another path: Call Trace: [< inline >] __dump_stack lib/dump_stack.c:15 [<ffffffff82be2c0d>] dump_stack+0x6f/0xa2 lib/dump_stack.c:50 [<ffffffff81355139>] warn_slowpath_common+0xd9/0x140 kernel/panic.c:482 [<ffffffff81355369>] warn_slowpath_null+0x29/0x30 kernel/panic.c:515 [<ffffffff8527e69a>] rawmidi_transmit_ack+0x24a/0x3b0 sound/core/rawmidi.c:1133 [<ffffffff8527e851>] snd_rawmidi_transmit_ack+0x51/0x80 sound/core/rawmidi.c:1163 [<ffffffff852d9046>] snd_virmidi_output_trigger+0x2b6/0x570 sound/core/seq/seq_virmidi.c:185 [< inline >] snd_rawmidi_output_trigger sound/core/rawmidi.c:150 [<ffffffff85285a0b>] snd_rawmidi_kernel_write1+0x4bb/0x760 sound/core/rawmidi.c:1252 [<ffffffff85287b73>] snd_rawmidi_write+0x543/0xb30 sound/core/rawmidi.c:1302 [<ffffffff817ba5f3>] __vfs_write+0x113/0x480 fs/read_write.c:528 [<ffffffff817bc087>] vfs_write+0x167/0x4a0 fs/read_write.c:577 [< inline >] SYSC_write fs/read_write.c:624 [<ffffffff817bf371>] SyS_write+0x111/0x220 fs/read_write.c:616 [<ffffffff86660276>] entry_SYSCALL_64_fastpath+0x16/0x7a arch/x86/entry/entry_64.S:185 In the former case, the reason is that virmidi has an open code calling snd_rawmidi_transmit_ack() with the value calculated outside the spinlock. We may use snd_rawmidi_transmit() in a loop just for consuming the input data, but even there, there is a race between snd_rawmidi_transmit_peek() and snd_rawmidi_tranmit_ack(). Similarly in the latter case, it calls snd_rawmidi_transmit_peek() and snd_rawmidi_tranmit_ack() separately without protection, so they are racy as well. The patch tries to address these issues by the following ways: - Introduce the unlocked versions of snd_rawmidi_transmit_peek() and snd_rawmidi_transmit_ack() to be called inside the explicit lock. - Rewrite snd_rawmidi_transmit() to be race-free (the former case). - Make the split calls (the latter case) protected in the rawmidi spin lock. BugLink: http://lkml.kernel.org/r/CACT4Y+YPq1+cYLkadwjWa5XjzF1_Vki1eHnVn-Lm0hzhSpu5PA@mail.gmail.com BugLink: http://lkml.kernel.org/r/CACT4Y+acG4iyphdOZx47Nyq_VHGbpJQK-6xNpiqUjaZYqsXOGw@mail.gmail.com Reported-by: Dmitry Vyukov <dvyukov@google.com> Tested-by: Dmitry Vyukov <dvyukov@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-03modules: fix longstanding /proc/kallsyms vs module insertion race.Rusty Russell
For CONFIG_KALLSYMS, we keep two symbol tables and two string tables. There's one full copy, marked SHF_ALLOC and laid out at the end of the module's init section. There's also a cut-down version that only contains core symbols and strings, and lives in the module's core section. After module init (and before we free the module memory), we switch the mod->symtab, mod->num_symtab and mod->strtab to point to the core versions. We do this under the module_mutex. However, kallsyms doesn't take the module_mutex: it uses preempt_disable() and rcu tricks to walk through the modules, because it's used in the oops path. It's also used in /proc/kallsyms. There's nothing atomic about the change of these variables, so we can get the old (larger!) num_symtab and the new symtab pointer; in fact this is what I saw when trying to reproduce. By grouping these variables together, we can use a carefully-dereferenced pointer to ensure we always get one or the other (the free of the module init section is already done in an RCU callback, so that's safe). We allocate the init one at the end of the module init section, and keep the core one inside the struct module itself (it could also have been allocated at the end of the module core, but that's probably overkill). Reported-by: Weilong Chen <chenweilong@huawei.com> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=111541 Cc: stable@kernel.org Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2016-02-03ACPI / CPPC: remove redundant mbox_send_message() declarationTimur Tabi
Remove a redundant function declaration in cppc_acpi.h for mbox_send_message(). That function is defined in mailbox_client.h, which is already included. Signed-off-by: Timur Tabi <timur@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-02-02drm: add helper to check for wc memory supportDave Airlie
Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-02-01Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: "This looks like a lot but it's a mixture of regression fixes as well as fixes for longer standing issues. 1) Fix on-channel cancellation in mac80211, from Johannes Berg. 2) Handle CHECKSUM_COMPLETE properly in xt_TCPMSS netfilter xtables module, from Eric Dumazet. 3) Avoid infinite loop in UDP SO_REUSEPORT logic, also from Eric Dumazet. 4) Avoid a NULL deref if we try to set SO_REUSEPORT after a socket is bound, from Craig Gallek. 5) GRO key comparisons don't take lightweight tunnels into account, from Jesse Gross. 6) Fix struct pid leak via SCM credentials in AF_UNIX, from Eric Dumazet. 7) We need to set the rtnl_link_ops of ipv6 SIT tunnels before we register them, otherwise the NEWLINK netlink message is missing the proper attributes. From Thadeu Lima de Souza Cascardo. 8) Several Spectrum chip bug fixes for mlxsw switch driver, from Ido Schimmel 9) Handle fragments properly in ipv4 easly socket demux, from Eric Dumazet. 10) Don't ignore the ifindex key specifier on ipv6 output route lookups, from Paolo Abeni" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (128 commits) tcp: avoid cwnd undo after receiving ECN irda: fix a potential use-after-free in ircomm_param_request net: tg3: avoid uninitialized variable warning net: nb8800: avoid uninitialized variable warning net: vxge: avoid unused function warnings net: bgmac: clarify CONFIG_BCMA dependency net: hp100: remove unnecessary #ifdefs net: davinci_cpdma: use dma_addr_t for DMA address ipv6/udp: use sticky pktinfo egress ifindex on connect() ipv6: enforce flowi6_oif usage in ip6_dst_lookup_tail() netlink: not trim skb for mmaped socket when dump vxlan: fix a out of bounds access in __vxlan_find_mac net: dsa: mv88e6xxx: fix port VLAN maps fib_trie: Fix shift by 32 in fib_table_lookup net: moxart: use correct accessors for DMA memory ipv4: ipconfig: avoid unused ic_proto_used symbol bnxt_en: Fix crash in bnxt_free_tx_skbs() during tx timeout. bnxt_en: Exclude rx_drop_pkts hw counter from the stack's rx_dropped counter. bnxt_en: Ring free response from close path should use completion ring net_sched: drr: check for NULL pointer in drr_dequeue ...
2016-02-01Merge branch 'libnvdimm-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm fixes from Dan Williams: "1/ Fixes to the libnvdimm 'pfn' device that establishes a reserved area for storing a struct page array. 2/ Fixes for dax operations on a raw block device to prevent pagecache collisions with dax mappings. 3/ A fix for pfn_t usage in vm_insert_mixed that lead to a null pointer de-reference. These have received build success notification from the kbuild robot across 153 configs and pass the latest ndctl tests" * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: phys_to_pfn_t: use phys_addr_t mm: fix pfn_t to page conversion in vm_insert_mixed block: use DAX for partition table reads block: revert runtime dax control of the raw block device fs, block: force direct-I/O for dax-enabled block devices devm_memremap_pages: fix vmem_altmap lifetime + alignment handling libnvdimm, pfn: fix restoring memmap location libnvdimm: fix mode determination for e820 devices
2016-01-31Merge tag 'tty-4.5-rc2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty/serial fixes from Greg KH: "Here are some small tty/serial driver fixes for 4.5-rc2. They resolve a number of reported problems (the ioctl one specifically has been pointed out by numerous people) and one patch adds some new device ids for the 8250_pci driver. All have been in linux-next successfully" * tag 'tty-4.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: serial: 8250_pci: Add Intel Broadwell ports staging/speakup: Use tty_ldisc_ref() for paste kworker n_tty: Fix unsafe reference to "other" ldisc tty: Fix unsafe ldisc reference via ioctl(TIOCGETD) tty: Retry failed reopen if tty teardown in-progress tty: Wait interruptibly for tty lock on reopen
2016-01-31Merge branch 'timers-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fixes from Thomas Gleixner: "The timer departement delivers: - a regression fix for the NTP code along with a proper selftest - prevent a spurious timer interrupt in the NOHZ lowres code - a fix for user space interfaces returning the remaining time on architectures with CONFIG_TIME_LOW_RES=y - a few patches to fix COMPILE_TEST fallout" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tick/nohz: Set the correct expiry when switching to nohz/lowres mode clocksource: Fix dependencies for archs w/o HAS_IOMEM clocksource: Select CLKSRC_MMIO where needed tick/sched: Hide unused oneshot timer code kselftests: timers: Add adjtimex SETOFFSET validity tests ntp: Fix ADJ_SETOFFSET being used w/ ADJ_NANO itimers: Handle relative timers with CONFIG_TIME_LOW_RES proper posix-timers: Handle relative timers with CONFIG_TIME_LOW_RES proper timerfd: Handle relative timers with CONFIG_TIME_LOW_RES proper hrtimer: Handle remaining time proper for TIME_LOW_RES clockevents/tcb_clksrc: Prevent disabling an already disabled clock
2016-01-31Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Thomas Gleixner: "This is much bigger than typical fixes, but Peter found a category of races that spurred more fixes and more debugging enhancements. Work started before the merge window, but got finished only now. Aside of that this contains the usual small fixes to perf and tools. Nothing particular exciting" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits) perf: Remove/simplify lockdep annotation perf: Synchronously clean up child events perf: Untangle 'owner' confusion perf: Add flags argument to perf_remove_from_context() perf: Clean up sync_child_event() perf: Robustify event->owner usage and SMP ordering perf: Fix STATE_EXIT usage perf: Update locking order perf: Remove __free_event() perf/bpf: Convert perf_event_array to use struct file perf: Fix NULL deref perf/x86: De-obfuscate code perf/x86: Fix uninitialized value usage perf: Fix race in perf_event_exit_task_context() perf: Fix orphan hole perf stat: Do not clean event's private stats perf hists: Fix HISTC_MEM_DCACHELINE width setting perf annotate browser: Fix behaviour of Shift-Tab with nothing focussed perf tests: Remove wrong semicolon in while loop in CQM test perf: Synchronously free aux pages in case of allocation failure ...
2016-01-31Merge branch 'irq-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull IRQ fixes from Ingo Molnar: "Mostly irqchip driver fixes, but also an irq core crash fix and a build fix" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/mxs: Add missing set_handle_irq() irqchip/atmel-aic: Fix wrong bit operation for IRQ priority irqchip/gic-v3-its: Recompute the number of pages on page size change base: Export platform_msi_domain_[alloc,free]_irqs of: MSI: Simplify irqdomain lookup irqdomain: Allow domain lookup with DOMAIN_BUS_WIRED token irqchip: Fix dependencies for archs w/o HAS_IOMEM irqchip/s3c24xx: Mark init_eint as __maybe_unused genirq: Validate action before dereferencing it in handle_irq_event_percpu()
2016-01-31phys_to_pfn_t: use phys_addr_tDan Williams
A dma_addr_t is potentially smaller than a phys_addr_t on some archs. Don't truncate the address when doing the pfn conversion. Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Reported-by: Matthew Wilcox <willy@linux.intel.com> [willy: fix pfn_t_to_phys as well] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2016-01-30Merge branch 'for-upstream' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth Johan Hedberg says: ==================== pull request: bluetooth 2016-01-30 Here's a set of important Bluetooth fixes for the 4.5 kernel: - Two fixes to 6LoWPAN code (one fixing a potential crash) - Fix LE pairing with devices using both public and random addresses - Fix allocation of dynamic LE PSM values - Fix missing COMPATIBLE_IOCTL for UART line discipline Please let me know if there are any issues pulling. Thanks. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>