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2016-08-24drm/amdgpu: avoid a possible array overflowAlex Deucher
When looking up the connector type make sure the index is valid. Avoids a later crash if we read past the end of the array. Workaround for bug: https://bugs.freedesktop.org/show_bug.cgi?id=97460 Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-08-24xen: change the type of xen_vcpu_id to uint32_tVitaly Kuznetsov
We pass xen_vcpu_id mapping information to hypercalls which require uint32_t type so it would be cleaner to have it as uint32_t. The initializer to -1 can be dropped as we always do the mapping before using it and we never check the 'not set' value anyway. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2016-08-24xenbus: don't look up transaction IDs for ordinary writesJan Beulich
This should really only be done for XS_TRANSACTION_END messages, or else at least some of the xenstore-* tools don't work anymore. Fixes: 0beef634b8 ("xenbus: don't BUG() on user mode induced condition") Reported-by: Richard Schütz <rschuetz@uni-koblenz.de> Cc: <stable@vger.kernel.org> Signed-off-by: Jan Beulich <jbeulich@suse.com> Tested-by: Richard Schütz <rschuetz@uni-koblenz.de> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2016-08-24mlxsw: router: Enable neighbors to be created on stacked devicesYotam Gigi
Make the function mlxsw_router_neigh_construct search the rif according to the neighbour dev other than the dev that was passed to the ndo, thus allowing creating neigbhours upon stacked devices. Fixes: 6cf3c971dc84 ("mlxsw: spectrum_router: Add private neigh table") Signed-off-by: Yotam Gigi <yotamg@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-24mlxsw: spectrum: Add missing flood to router portIdo Schimmel
In case we have a layer 3 interface on top of a bridge (VLAN / FID RIF), then we should flood the following packet types to the router: * Broadcast: If DIP is the broadcast address of the interface, then we need to be able to get it to CPU by trapping it following route lookup. * Reserved IP multicast (224.0.0.X): Some control packets (e.g. OSPF) use this range and are trapped in the router block. Fixes: 99f44bb3527b ("mlxsw: spectrum: Enable L3 interfaces on top of bridge devices") Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-24RDMA/ocrdma: Fix the max_sge reported from FWSelvin Xavier
Current driver is reporting wrong values for max_sge and max_sge_rd in query_device. This breaks the nfs rdma and iser in some device profiles. Fixing the driver to report correct values from FW. Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com> Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-24i40iw: Avoid writing to freed memoryMustafa Ismail
iwpbl->iwmr points to the structure that contains iwpbl, which is iwmr. Setting this to NULL would result in writing to freed memory. So just free iwmr, and return. Fixes: d37498417947 ("i40iw: add files for iwarp interface") Reported-by: Stefan Assmann <sassmann@redhat.com> Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com> Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-24i40iw: Fix double free of allocated_bufferMustafa Ismail
Memory allocated for iwqp; iwqp->allocated_buffer is freed twice in the create_qp error path. Correct this by having it freed only once in i40iw_free_qp_resources(). Fixes: d37498417947 ("i40iw: add files for iwarp interface") Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com> Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-24IB/mlx5: Remove superfluous include of io-mapping.hChris Wilson
This file does not use any structs or functions defined by io-mapping.h (nor does it directly use iomap, ioremap, iounamp or friends). Remove it to simplify verification of changes to io-mapping.h The include existed since its inception in commit e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c Author: Eli Cohen <eli@mellanox.com> Date: Sun Jul 7 17:25:49 2013 +0300 mlx5: Add driver for Mellanox Connect-IB adapters which looks like a copy across from the Mellanox ethernet driver. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Eli Cohen <eli@mellanox.com> Cc: Jack Morgenstein <jackm@dev.mellanox.co.il> Cc: Or Gerlitz <ogerlitz@mellanox.com> Cc: Matan Barak <matanb@mellanox.com> Cc: Leon Romanovsky <leonro@mellanox.com> Cc: Doug Ledford <dledford@redhat.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Cc: linux-rdma@vger.kernel.org Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Laurence Oberman <loberman@redhat.com> Tested-by: Laurence Oberman <loberman@redhat.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-24i40iw: Do not set self-referencing pointer to NULL after kfreeMustafa Ismail
In i40iw_free_virt_mem(), do not set mem->va to NULL after freeing it as mem->va is a self-referencing pointer to mem. Fixes: 4e9042e647ff ("i40iw: add hw and utils files") Reported-by: Stefan Assmann <sassmann@redhat.com> Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com> Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-24i40iw: Add missing NULL check for MPA private dataShiraz Saleem
Add NULL check for pdata and pdata->addr before the memcpy in i40iw_form_cm_frame(). This fixes a NULL pointer de-reference which occurs when the MPA private data pointer is NULL. Also only copy pdata->size bytes in the memcpy to prevent reading past the length of the private data buffer provided by upper layer. Fixes: f27b4746f378 ("i40iw: add connection management code") Reported-by: Stefan Assmann <sassmann@redhat.com> Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com> Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-24Bluetooth: split sk_filter in l2cap_sock_recv_cbDaniel Borkmann
During an audit for sk_filter(), we found that rx_busy_skb handling in l2cap_sock_recv_cb() and l2cap_sock_recvmsg() looks not quite as intended. The assumption from commit e328140fdacb ("Bluetooth: Use event-driven approach for handling ERTM receive buffer") is that errors returned from sock_queue_rcv_skb() are due to receive buffer shortage. However, nothing should prevent doing a setsockopt() with SO_ATTACH_FILTER on the socket, that could drop some of the incoming skbs when handled in sock_queue_rcv_skb(). In that case sock_queue_rcv_skb() will return with -EPERM, propagated from sk_filter() and if in L2CAP_MODE_ERTM mode, wrong assumption was that we failed due to receive buffer being full. From that point onwards, due to the to-be-dropped skb being held in rx_busy_skb, we cannot make any forward progress as rx_busy_skb is never cleared from l2cap_sock_recvmsg(), due to the filter drop verdict over and over coming from sk_filter(). Meanwhile, in l2cap_sock_recv_cb() all new incoming skbs are being dropped due to rx_busy_skb being occupied. Instead, just use __sock_queue_rcv_skb() where an error really tells that there's a receive buffer issue. Split the sk_filter() and enable it for non-segmented modes at queuing time since at this point in time the skb has already been through the ERTM state machine and it has been acked, so dropping is not allowed. Instead, for ERTM and streaming mode, call sk_filter() in l2cap_data_rcv() so the packet can be dropped before the state machine sees it. Fixes: e328140fdacb ("Bluetooth: Use event-driven approach for handling ERTM receive buffer") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-08-24Bluetooth: Fix memory leak at end of hci requestsFrederic Dalleau
In hci_req_sync_complete the event skb is referenced in hdev->req_skb. It is used (via hci_req_run_skb) from either __hci_cmd_sync_ev which will pass the skb to the caller, or __hci_req_sync which leaks. unreferenced object 0xffff880005339a00 (size 256): comm "kworker/u3:1", pid 1011, jiffies 4294671976 (age 107.389s) backtrace: [<ffffffff818d89d9>] kmemleak_alloc+0x49/0xa0 [<ffffffff8116bba8>] kmem_cache_alloc+0x128/0x180 [<ffffffff8167c1df>] skb_clone+0x4f/0xa0 [<ffffffff817aa351>] hci_event_packet+0xc1/0x3290 [<ffffffff8179a57b>] hci_rx_work+0x18b/0x360 [<ffffffff810692ea>] process_one_work+0x14a/0x440 [<ffffffff81069623>] worker_thread+0x43/0x4d0 [<ffffffff8106ead4>] kthread+0xc4/0xe0 [<ffffffff818dd38f>] ret_from_fork+0x1f/0x40 [<ffffffffffffffff>] 0xffffffffffffffff Signed-off-by: Frédéric Dalleau <frederic.dalleau@collabora.co.uk> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-08-24drm/amdgpu: fix lru size grouping v2Christian König
Adding a BO can make it the insertion point for larger sizes as well. v2: add a comment about the guard structure. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-08-24block: make sure a big bio is split into at most 256 bvecsMing Lei
After arbitrary bio size was introduced, the incoming bio may be very big. We have to split the bio into small bios so that each holds at most BIO_MAX_PAGES bvecs for safety reason, such as bio_clone(). This patch fixes the following kernel crash: > [ 172.660142] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 > [ 172.660229] IP: [<ffffffff811e53b4>] bio_trim+0xf/0x2a > [ 172.660289] PGD 7faf3e067 PUD 7f9279067 PMD 0 > [ 172.660399] Oops: 0000 [#1] SMP > [...] > [ 172.664780] Call Trace: > [ 172.664813] [<ffffffffa007f3be>] ? raid1_make_request+0x2e8/0xad7 [raid1] > [ 172.664846] [<ffffffff811f07da>] ? blk_queue_split+0x377/0x3d4 > [ 172.664880] [<ffffffffa005fb5f>] ? md_make_request+0xf6/0x1e9 [md_mod] > [ 172.664912] [<ffffffff811eb860>] ? generic_make_request+0xb5/0x155 > [ 172.664947] [<ffffffffa0445c89>] ? prio_io+0x85/0x95 [bcache] > [ 172.664981] [<ffffffffa0448252>] ? register_cache_set+0x355/0x8d0 [bcache] > [ 172.665016] [<ffffffffa04497d3>] ? register_bcache+0x1006/0x1174 [bcache] The issue can be reproduced by the following steps: - create one raid1 over two virtio-blk - build bcache device over the above raid1 and another cache device and bucket size is set as 2Mbytes - set cache mode as writeback - run random write over ext4 on the bcache device Fixes: 54efd50(block: make generic_make_request handle arbitrarily sized bios) Reported-by: Sebastian Roesner <sroesner-kernelorg@roesner-online.de> Reported-by: Eric Wheeler <bcache@lists.ewheeler.net> Cc: stable@vger.kernel.org (4.3+) Cc: Shaohua Li <shli@fb.com> Acked-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-08-24nvme: Fix nvme_get/set_features() with a NULL result pointerAndy Lutomirski
nvme_set_features() callers seem to expect that passing NULL as the result pointer is acceptable. Teach nvme_set_features() not to try to write to the NULL address. For symmetry, make the same change to nvme_get_features(), despite the fact that all current callers pass a valid result pointer. I assume that this bug hasn't been reported in practice because the callers that pass NULL are all in the SCSI translation layer and no one uses the relevant operations. Cc: stable@vger.kernel.org Signed-off-by: Andy Lutomirski <luto@kernel.org> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-08-24drm/tegra: dsi: Enhance runtime power managementThierry Reding
The MIPI DSI output on Tegra SoCs requires some external logic to calibrate the MIPI pads before a video signal can be transmitted. This MIPI calibration logic requires to be powered on while the MIPI pads are being used, which is currently done as part of the DSI driver's probe implementation. This is suboptimal because it will leave the MIPI calibration logic powered up even if the DSI output is never used. On Tegra114 and earlier this behaviour also causes the driver to hang while trying to power up the MIPI calibration logic because the power partition that contains the MIPI calibration logic will be powered on by the display controller at output pipeline configuration time. Thus the power up sequence for the MIPI calibration logic happens before it's power partition is guaranteed to be enabled. Fix this by splitting up the API into a request/free pair of functions that manage the runtime dependency between the DSI and the calibration modules (no registers are accessed) and a set of enable, calibrate and disable functions that program the MIPI calibration logic at points in time where the power partition is really enabled. While at it, make sure that the runtime power management also works in ganged mode, which is currently also broken. Reported-by: Jonathan Hunter <jonathanh@nvidia.com> Tested-by: Jonathan Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-08-24perf/core: Use this_cpu_ptr() when stopping AUX eventsWill Deacon
When tearing down an AUX buf for an event via perf_mmap_close(), __perf_event_output_stop() is called on the event's CPU to ensure that trace generation is halted before the process of unmapping and freeing the buffer pages begins. The callback is performed via cpu_function_call(), which ensures that it runs with interrupts disabled and is therefore not preemptible. Unfortunately, the current code grabs the per-cpu context pointer using get_cpu_ptr(), which unnecessarily disables preemption and doesn't pair the call with put_cpu_ptr(), leading to a preempt_count() imbalance and a BUG when freeing the AUX buffer later on: WARNING: CPU: 1 PID: 2249 at kernel/events/ring_buffer.c:539 __rb_free_aux+0x10c/0x120 Modules linked in: [...] Call Trace: [<ffffffff813379dd>] dump_stack+0x4f/0x72 [<ffffffff81059ff6>] __warn+0xc6/0xe0 [<ffffffff8105a0c8>] warn_slowpath_null+0x18/0x20 [<ffffffff8112761c>] __rb_free_aux+0x10c/0x120 [<ffffffff81128163>] rb_free_aux+0x13/0x20 [<ffffffff8112515e>] perf_mmap_close+0x29e/0x2f0 [<ffffffff8111da30>] ? perf_iterate_ctx+0xe0/0xe0 [<ffffffff8115f685>] remove_vma+0x25/0x60 [<ffffffff81161796>] exit_mmap+0x106/0x140 [<ffffffff8105725c>] mmput+0x1c/0xd0 [<ffffffff8105cac3>] do_exit+0x253/0xbf0 [<ffffffff8105e32e>] do_group_exit+0x3e/0xb0 [<ffffffff81068d49>] get_signal+0x249/0x640 [<ffffffff8101c273>] do_signal+0x23/0x640 [<ffffffff81905f42>] ? _raw_write_unlock_irq+0x12/0x30 [<ffffffff81905f69>] ? _raw_spin_unlock_irq+0x9/0x10 [<ffffffff81901896>] ? __schedule+0x2c6/0x710 [<ffffffff810022a4>] exit_to_usermode_loop+0x74/0x90 [<ffffffff81002a56>] prepare_exit_to_usermode+0x26/0x30 [<ffffffff81906d1b>] retint_user+0x8/0x10 This patch uses this_cpu_ptr() instead of get_cpu_ptr(), since preemption is already disabled by the caller. Signed-off-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 95ff4ca26c49 ("perf/core: Free AUX pages in unmap path") Link: http://lkml.kernel.org/r/20160824091905.GA16944@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-08-24Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds
Pull vhost bugfix from Michael Tsirkin: "This includes a single bugfix for vhost-scsi" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: vhost/scsi: fix reuse of &vq->iov[out] in response
2016-08-24clocksource/drivers/pxa: Fix include files for compilationBaoyou Xie
We get 1 warning about global functions without a declaration in the clocksource/drivers/pxa driver when building with W=1: drivers/clocksource/pxa_timer.c:221:13: warning: no previous prototype for 'pxa_timer_nodt_init' [-Wmissing-prototypes] void __init pxa_timer_nodt_init(int irq, void __iomem *base, In fact, this function is declared in pxa.h, so this patch add missing header dependencies. Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Cc: daniel.lezcano@linaro.org Cc: xie.baoyou@zte.com.cn Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1471965569-4104-1-git-send-email-baoyou.xie@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-08-24MAINTAINERS: Add ARM ARCHITECTED TIMER entryMark Rutland
The ARM architected timer driver falls under the drivers/clocksource/ catch-all in MAINTAINERS, and get_maintainers.pl doesn't suggest a number of people who should be Cc'd. The ARM architected timer is a core component of ARMv7+VE and ARMv8, and is critical to the correct operation of both architecture ports (and their respective KVM code), and patches to it should have review by knowledgeable interested parties. This patch adds a MAINTAINERS entry for the driver and its low-level arch components, such that get_maintainer.pl will always include relevant interested parties for modifications to the driver. For the timebeing, this means myself and Marc Zyngier. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1470737036-2082-1-git-send-email-mark.rutland@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-08-24ALSA: hda/realtek - fix headset mic detection for MSI MS-B120Anisse Astier
MSI Cubi MS-B120 needs the same fixup as the Gigabyte BXBT-2807 for its mic to work. They both use a single 3-way jack for both mic and headset with an ALC283 codec, with the same pins used. Cc: Daniel Drake <drake@endlessm.com> Signed-off-by: Anisse Astier <anisse@astier.eu> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-08-24x86/apic: Do not init irq remapping if ioapic is disabledWanpeng Li
native_smp_prepare_cpus -> default_setup_apic_routing -> enable_IR_x2apic -> irq_remapping_prepare -> intel_prepare_irq_remapping -> intel_setup_irq_remapping So IR table is setup even if "noapic" boot parameter is added. As a result we crash later when the interrupt affinity is set due to a half initialized remapping infrastructure. Prevent remap initialization when IOAPIC is disabled. Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Joerg Roedel <joro@8bytes.org> Link: http://lkml.kernel.org/r/1471954039-3942-1-git-send-email-wanpeng.li@hotmail.com Cc: stable@vger.kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-08-24timekeeping: Cap array access in timekeeping_debugJohn Stultz
It was reported that hibernation could fail on the 2nd attempt, where the system hangs at hibernate() -> syscore_resume() -> i8237A_resume() -> claim_dma_lock(), because the lock has already been taken. However there is actually no other process would like to grab this lock on that problematic platform. Further investigation showed that the problem is triggered by setting /sys/power/pm_trace to 1 before the 1st hibernation. Since once pm_trace is enabled, the rtc becomes unmeaningful after suspend, and meanwhile some BIOSes would like to adjust the 'invalid' RTC (e.g, smaller than 1970) to the release date of that motherboard during POST stage, thus after resumed, it may seem that the system had a significant long sleep time which is a completely meaningless value. Then in timekeeping_resume -> tk_debug_account_sleep_time, if the bit31 of the sleep time happened to be set to 1, fls() returns 32 and we add 1 to sleep_time_bin[32], which causes an out of bounds array access and therefor memory being overwritten. As depicted by System.map: 0xffffffff81c9d080 b sleep_time_bin 0xffffffff81c9d100 B dma_spin_lock the dma_spin_lock.val is set to 1, which caused this problem. This patch adds a sanity check in tk_debug_account_sleep_time() to ensure we don't index past the sleep_time_bin array. [jstultz: Problem diagnosed and original patch by Chen Yu, I've solved the issue slightly differently, but borrowed his excelent explanation of the issue here.] Fixes: 5c83545f24ab "power: Add option to log time spent in suspend" Reported-by: Janek Kozicki <cosurgi@gmail.com> Reported-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Cc: linux-pm@vger.kernel.org Cc: Peter Zijlstra <peterz@infradead.org> Cc: Xunlei Pang <xpang@redhat.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: stable <stable@vger.kernel.org> Cc: Zhang Rui <rui.zhang@intel.com> Link: http://lkml.kernel.org/r/1471993702-29148-3-git-send-email-john.stultz@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-08-24timekeeping: Avoid taking lock in NMI path with CONFIG_DEBUG_TIMEKEEPINGJohn Stultz
When I added some extra sanity checking in timekeeping_get_ns() under CONFIG_DEBUG_TIMEKEEPING, I missed that the NMI safe __ktime_get_fast_ns() method was using timekeeping_get_ns(). Thus the locking added to the debug checks broke the NMI-safety of __ktime_get_fast_ns(). This patch open-codes the timekeeping_get_ns() logic for __ktime_get_fast_ns(), so can avoid any deadlocks in NMI. Fixes: 4ca22c2648f9 "timekeeping: Add warnings when overflows or underflows are observed" Reported-by: Steven Rostedt <rostedt@goodmis.org> Reported-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: John Stultz <john.stultz@linaro.org> Cc: stable <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/1471993702-29148-2-git-send-email-john.stultz@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-08-23net: diag: Fix refcnt leak in error path destroying socketDavid Ahern
inet_diag_find_one_icsk takes a reference to a socket that is not released if sock_diag_destroy returns an error. Fix by changing tcp_diag_destroy to manage the refcnt for all cases and remove the sock_put calls from tcp_abort. Fixes: c1e64e298b8ca ("net: diag: Support destroying TCP sockets") Reported-by: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-23tun: fix transmit timestamp supportSoheil Hassas Yeganeh
Instead of using sock_tx_timestamp, use skb_tx_timestamp to record software transmit timestamp of a packet. sock_tx_timestamp resets and overrides the tx_flags of the skb. The function is intended to be called from within the protocol layer when creating the skb, not from a device driver. This is inconsistent with other drivers and will cause issues for TCP. In TCP, we intend to sample the timestamps for the last byte for each sendmsg/sendpage. For that reason, tcp_sendmsg calls tcp_tx_timestamp only with the last skb that it generates. For example, if a 128KB message is split into two 64KB packets we want to sample the SND timestamp of the last packet. The current code in the tun driver, however, will result in sampling the SND timestamp for both packets. Also, when the last packet is split into smaller packets for retranmission (see tcp_fragment), the tun driver will record timestamps for all of the retransmitted packets and not only the last packet. Fixes: eda297729171 (tun: Support software transmit time stamping.) Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: Francis Yan <francisyyan@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-23udp: get rid of SLAB_DESTROY_BY_RCU allocationsEric Dumazet
After commit ca065d0cf80f ("udp: no longer use SLAB_DESTROY_BY_RCU") we do not need this special allocation mode anymore, even if it is harmless. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-23Merge tag 'for-f2fs-v4.8-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Pull f2fs fixes from Jaegeuk Kim: - fsmark regression - i_size race condition - wrong conditions in f2fs_move_file_range * tag 'for-f2fs-v4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: f2fs: avoid potential deadlock in f2fs_move_file_range f2fs: allow copying file range only in between regular files Revert "f2fs: move i_size_write in f2fs_write_end" Revert "f2fs: use percpu_rw_semaphore"
2016-08-23sctp: fix overrun in sctp_diag_dump_one()Lance Richardson
The function sctp_diag_dump_one() currently performs a memcpy() of 64 bytes from a 16 byte field into another 16 byte field. Fix by using correct size, use sizeof to obtain correct size instead of using a hard-coded constant. Fixes: 8f840e47f190 ("sctp: add the sctp_diag.c file") Signed-off-by: Lance Richardson <lrichard@redhat.com> Reviewed-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-23dwc_eth_qos: fix interrupt enable raceRabin Vincent
We currently enable interrupts before we enable NAPI. If an RX interrupt hits before we enabled NAPI then the NAPI callback is never called and we leave the hardware with RX interrupts disabled, which of course leads us to never handling received packets. Fix this by moving the interrupt enable to after we've enable NAPI and the reclaim tasklet. Fixes: cd5e41234729 ("dwc_eth_qos: do phy_start before resetting hardware") Signed-off-by: Rabin Vincent <rabinv@axis.com> Signed-off-by: Lars Persson <larper@axis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-23net: lpc_eth: Check clk_prepare_enable() errorFabio Estevam
clk_prepare_enable() may fail, so we should better check its return value and propagate it in the case of failure While at it, replace __lpc_eth_clock_enable() with a plain clk_prepare_enable/clk_disable_unprepare() call in order to simplify the code. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Acked-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-23net: mv88e6xxx: Fix ingress rate removal for mv6131 chipsJamie Lentin
The PORT_RATE_CONTROL register works differently on 88e6095/6095f/6131 in comparison to 6123/61/65, and 0x0 disables. The distinction was lost Linux 4.1 --> 4.2 Signed-off-by: Jamie Lentin <jm@lentin.co.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-23phy: micrel: Reenable interrupts during resume for ksz9031Xander Huff
Like the ksz8081, the ksz9031 has the behavior where it will clear the interrupt enable bits when leaving power down. This takes advantage of the solution provided by f5aba91. Signed-off-by: Xander Huff <xander.huff@ni.com> Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-23tcp: properly scale window in tcp_v[46]_reqsk_send_ack()Eric Dumazet
When sending an ack in SYN_RECV state, we must scale the offered window if wscale option was negotiated and accepted. Tested: Following packetdrill test demonstrates the issue : 0.000 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 +0 bind(3, ..., ...) = 0 +0 listen(3, 1) = 0 // Establish a connection. +0 < S 0:0(0) win 20000 <mss 1000,sackOK,wscale 7, nop, TS val 100 ecr 0> +0 > S. 0:0(0) ack 1 win 28960 <mss 1460,sackOK, TS val 100 ecr 100, nop, wscale 7> +0 < . 1:11(10) ack 1 win 156 <nop,nop,TS val 99 ecr 100> // check that window is properly scaled ! +0 > . 1:1(0) ack 1 win 226 <nop,nop,TS val 200 ecr 100> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: Neal Cardwell <ncardwell@google.com> Acked-by: Yuchung Cheng <ycheng@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-23gianfar: fix size of scatter-gathered framesZefir Kurtisi
The current scatter-gather logic in gianfar is flawed, since it does not consider the eTSEC's RxBD 'Data Length' field is context depening: for the last fragment it contains the full frame size, while fragments contain the fragment size, which equals the value written to register MRBLR. This causes data corruption as soon as the hardware starts to fragment receiving frames. As a result, the size of fragmented frames is increased by (nr_frags - 1) * MRBLR We first noticed this issue working with DSA, where an ICMP request sized 1472 bytes causes the scatter-gather logic to kick in. The full Ethernet frame (1518) gets increased by DSA (4), GMAC_FCB_LEN (8), and FSL_GIANFAR_DEV_HAS_TIMER (priv->padding=8) to a total of 1538 octets, which is fragmented by the hardware and reconstructed by the driver to a 3074 octet frame. This patch fixes the problem by adjusting the size of the last fragment. It was tested by setting MRBLR to different multiples of 64, proving correct scatter-gather operation on frames with up to 9000 octets in size. Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-23gianfar: prevent fragmentation in DSA environmentsZefir Kurtisi
The eTSEC register MRBLR defines the maximum space in the RX buffers and is set to 1536 by gianfar. This reasonably covers the common use case where the MTU is kept at default 1500. In that case, the largest Ethernet frame size of 1518 plus an optional GMAC_FCB_LEN of 8, and an additional padding of 8 to handle FSL_GIANFAR_DEV_HAS_TIMER totals to 1534 and nicely fit within the chosen MRBLR. Alas, if the eTSEC is attached to a DSA enabled switch, the (E)DSA header extension (4 or 8 bytes) causes every maximum sized frame to be fragmented by the hardware. This patch increases the maximum RX buffer size by 8 and rounds up to the next multiple of 64, which the hardware's defines as RX buffer granularity. Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-23udp: fix poll() issue with zero sized packetsEric Dumazet
Laura tracked poll() [and friends] regression caused by commit e6afc8ace6dd ("udp: remove headers from UDP packets before queueing") udp_poll() needs to know if there is a valid packet in receive queue, even if its payload length is 0. Change first_packet_length() to return an signed int, and use -1 as the indication of an empty queue. Fixes: e6afc8ace6dd ("udp: remove headers from UDP packets before queueing") Reported-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Tested-by: Laura Abbott <labbott@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-23x86/PCI: VMD: Fix infinite loop executing irq'sKeith Busch
We can't initialize the list head on deletion as this causes the node to point to itself, which causes an infinite loop if vmd_irq() happens to be servicing that node. The list initialization was trying to fix a bug from multiple calls to disable the same IRQ. Fix this instead by having the VMD driver track if the interrupt is enabled. [bhelgaas: changelog, add "Fixes"] Fixes: 97e923063575 ("x86/PCI: VMD: Initialize list item in IRQ disable") Reported-by: Grzegorz Koczot <grzegorz.koczot@intel.com> Tested-by: Miroslaw Drost <miroslaw.drost@intel.com> Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by Jon Derrick: <jonathan.derrick@intel.com>
2016-08-23um: Don't discard .text.exit sectionAndrey Ryabinin
Commit e41f501d3912 ("vmlinux.lds: account for destructor sections") added '.text.exit' to EXIT_TEXT which is discarded at link time by default. This breaks compilation of UML: `.text.exit' referenced in section `.fini_array' of /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/libc.a(sdlerror.o): defined in discarded section `.text.exit' of /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/libc.a(sdlerror.o) Apparently UML doesn't want to discard exit text, so let's place all EXIT_TEXT sections in .exit.text. Fixes: e41f501d3912 ("vmlinux.lds: account for destructor sections") Reported-by: Stefan Traby <stefan@hello-penguin.com> Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: <stable@vger.kernel.org> Acked-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2016-08-23ubifs: Fix xattr generic handler usageRichard Weinberger
UBIFS uses full names to work with xattrs, therefore we have to use xattr_full_name() to obtain the xattr prefix as string. Cc: <stable@vger.kernel.org> Cc: Andreas Gruenbacher <agruenba@redhat.com> Fixes: 2b88fc21ca ("ubifs: Switch to generic xattr handlers") Signed-off-by: Richard Weinberger <richard@nod.at> Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com> Tested-by: Dongsheng Yang <dongsheng081251@gmail.com>
2016-08-23ubifs: Fix assertion in layout_in_gaps()Vincent Stehlé
An assertion in layout_in_gaps() verifies that the gap_lebs pointer is below the maximum bound. When computing this maximum bound the idx_lebs count is multiplied by sizeof(int), while C pointers arithmetic does take into account the size of the pointed elements implicitly already. Remove the multiplication to fix the assertion. Fixes: 1e51764a3c2ac05a ("UBIFS: add new flash file system") Cc: <stable@vger.kernel.org> Signed-off-by: Vincent Stehlé <vincent.stehle@intel.com> Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2016-08-23Merge tag 'usercopy-v4.8-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardened usercopy fixes from Kees Cook: - avoid signed math problems on unexpected compilers - avoid false positives at very end of kernel text range checks * tag 'usercopy-v4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: usercopy: fix overlap check for kernel text usercopy: avoid potentially undefined behavior in pointer math
2016-08-23Merge branch 'linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto fixes from Herbert Xu: "This fixes a number of memory corruption bugs in the newly added sha256-mb/sha256-mb code" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: sha512-mb - fix ctx pointer crypto: sha256-mb - fix ctx pointer and digest copy
2016-08-23iw_cxgb4: Fix cxgb4 arm CQ logic w/IB_CQ_REPORT_MISSED_EVENTSBharat Potnuri
Current cxgb4 arm CQ logic ignores IB_CQ_REPORT_MISSED_EVENTS for request completion notification on a CQ. Due to this ib_poll_handler() assumes all events polled and avoids further iopoll scheduling. This patch adds logic to cxgb4 ib_req_notify_cq() handler to check if CQ is not empty and return accordingly. Based on the return value of ib_req_notify_cq() handler, ib_poll_handler() will schedule a run of iopoll handler. Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-23i40iw: Add missing check for interface already openMustafa Ismail
In i40iw_open(), check if interface is already open and return success if it is. Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status") Reported-by: Stefan Assmann <sassmann@redhat.com> Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com> Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-23i40iw: Protect req_resource_num updateMustafa Ismail
In i40iw_alloc_resource(), ensure that the update to req_resource_num is protected by the lock. Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status") Reported-by: Stefan Assmann <sassmann@redhat.com> Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com> Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-23i40iw: Change mem_resources pointer to a u8Shiraz Saleem
iwdev->mem_resources is incorrectly defined as an unsigned long instead of u8. As a result, the offset into the dynamic allocated structures in i40iw_initialize_hw_resources() is incorrectly calculated and would lead to writing of memory regions outside of the allocated buffer. Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status") Reported-by: Stefan Assmann <sassmann@redhat.com> Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com> Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-23IB/core: Use memdup_user() rather than duplicating its implementationMarkus Elfring
* Reuse existing functionality from memdup_user() instead of keeping duplicate source code. This issue was detected by using the Coccinelle software. * The local variable "ret" will be set to an appropriate value a bit later. Thus omit the explicit initialisation at the beginning. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-23IB/qib: Use memdup_user() rather than duplicating its implementationMarkus Elfring
Reuse existing functionality from memdup_user() instead of keeping duplicate source code. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>