- 15 Mar, 2017 6 commits
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Christian Kellner authored
Currently when dispatching hotkeys we check if the scancode is in the range of 0 and TPACPI_HOTKEY_MAP_LEN, although the bottom 20 entries in the hotkey keymap are already adaptive keycodes. Therefore we introduce a TP_ACPI_HOTKEYSCAN_ADAPTIVE_START and ensure that we are in the range 0 and ADAPTIVE_START for the generic keycode case. Signed-off-by: Christian Kellner <ckellner@redhat.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Michał Kępień authored
Remove redundant set_bit() call for KEY_RFKILL as it is already made by sparse_keymap_setup() due to KEY_RFKILL being assigned to event code 8 in intel_hid_keymap. Signed-off-by: Michał Kępień <kernel@kempniu.pl> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-and-tested-by: Alex Hung <alex.hung@canonical.com>
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Michał Kępień authored
intel_hid_input_setup() is only called from the platform driver's .probe callback. Use the devm variant of input_allocate_device() for allocating memory for the HID events input device in order to simplify two error paths and get rid of intel_hid_input_destroy(). Signed-off-by: Michał Kępień <kernel@kempniu.pl> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-and-tested-by: Alex Hung <alex.hung@canonical.com>
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Michał Kępień authored
As the integer value passed to intel_hid_set_enable() is always explicitly passed and is used solely as a boolean value, make it a bool. Signed-off-by: Michał Kępień <kernel@kempniu.pl> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-and-tested-by: Alex Hung <alex.hung@canonical.com>
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Michał Kępień authored
ACPI method HDSM takes a single integer argument. Use acpi_execute_simple_method() instead of acpi_evaluate_object() for calling that ACPI method to simplify code and reduce the number of local variables inside intel_hid_set_enable(). Signed-off-by: Michał Kępień <kernel@kempniu.pl> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-and-tested-by: Alex Hung <alex.hung@canonical.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: 1) Ensure that mtu is at least IPV6_MIN_MTU in ipv6 VTI tunnel driver, from Steffen Klassert. 2) Fix crashes when user tries to get_next_key on an LPM bpf map, from Alexei Starovoitov. 3) Fix detection of VLAN fitlering feature for bnx2x VF devices, from Michal Schmidt. 4) We can get a divide by zero when TCP socket are morphed into listening state, fix from Eric Dumazet. 5) Fix socket refcounting bugs in skb_complete_wifi_ack() and skb_complete_tx_timestamp(). From Eric Dumazet. 6) Use after free in dccp_feat_activate_values(), also from Eric Dumazet. 7) Like bonding team needs to use ETH_MAX_MTU as netdev->max_mtu, from Jarod Wilson. 8) Fix use after free in vrf_xmit(), from David Ahern. 9) Don't do UDP Fragmentation Offload on IPComp ipsec packets, from Alexey Kodanev. 10) Properly check napi_complete_done() return value in order to decide whether to re-enable IRQs or not in amd-xgbe driver, from Thomas Lendacky. 11) Fix double free of hwmon device in marvell phy driver, from Andrew Lunn. 12) Don't crash on malformed netlink attributes in act_connmark, from Etienne Noss. 13) Don't remove routes with a higher metric in ipv6 ECMP route replace, from Sabrina Dubroca. 14) Don't write into a cloned SKB in ipv6 fragmentation handling, from Florian Westphal. 15) Fix routing redirect races in dccp and tcp, basically the ICMP handler can't modify the socket's cached route in it's locked by the user at this moment. From Jon Maxwell. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (108 commits) qed: Enable iSCSI Out-of-Order qed: Correct out-of-bound access in OOO history qed: Fix interrupt flags on Rx LL2 qed: Free previous connections when releasing iSCSI qed: Fix mapping leak on LL2 rx flow qed: Prevent creation of too-big u32-chains qed: Align CIDs according to DORQ requirement mlxsw: reg: Fix SPVMLR max record count mlxsw: reg: Fix SPVM max record count net: Resend IGMP memberships upon peer notification. dccp: fix memory leak during tear-down of unsuccessful connection request tun: fix premature POLLOUT notification on tun devices dccp/tcp: fix routing redirect race ucc/hdlc: fix two little issue vxlan: fix ovs support net: use net->count to check whether a netns is alive or not bridge: drop netfilter fake rtable unconditionally ipv6: avoid write to a possibly cloned skb net: wimax/i2400m: fix NULL-deref at probe isdn/gigaset: fix NULL-deref at probe ...
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- 14 Mar, 2017 21 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroupLinus Torvalds authored
Pull cgroup fixes from Tejun Heo: "Three cgroup fixes. Nothing critical: - the pids controller could trigger suspicious RCU warning spuriously. Fixed. - in the debug controller, %p -> %pK to protect kernel pointer from getting exposed. - documentation formatting fix" * 'for-4.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroups: censor kernel pointer in debug files cgroup/pids: remove spurious suspicious RCU usage warning cgroup: Fix indenting in PID controller documentation
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/libataLinus Torvalds authored
Pull libata fixes from Tejun Heo: "Three libata fixes: - fix for a circular reference bug in sysfs code which prevented pata_legacy devices from being released after probe failure, which in turn prevented devres from releasing the associated resources. - drop spurious WARN in the command issue path which can be triggered by a legitimate passthrough command. - an ahci_qoriq specific fix" * 'for-4.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: ahci: qoriq: correct the sata ecc setting error libata: drop WARN from protocol error in ata_sff_qc_issue() libata: transport: Remove circular dependency at free time
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/wqLinus Torvalds authored
Pull workqueue fix from Tejun Heo: "If a delayed work is queued with NULL @wq, workqueue code explodes after the timer expires at which point it's difficult to tell who the culprit was. This actually happened and the offender was net/smc this time. Add an explicit sanity check for it in the queueing path" * 'for-4.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: trigger WARN if queue_delayed_work() is called with NULL @wq
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpuLinus Torvalds authored
Pull percpu fixes from Tejun Heo: - the allocation path was updating pcpu_nr_empty_pop_pages without the required locking which can lead to incorrect handling of empty chunks (e.g. keeping too many around), which is buggy but shouldn't lead to critical failures. Fixed by adding the locking - a trivial patch to drop an unused param from pcpu_get_pages() * 'for-4.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu: remove unused chunk_alloc parameter from pcpu_get_pages() percpu: acquire pcpu_lock when updating pcpu_nr_empty_pop_pages
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David S. Miller authored
Yuval Mintz says: ==================== qed: Fixes series This address several different issues in qed. The more significant portions: Patch #1 would cause timeout when qedr utilizes the highest CIDs availble for it [or when future qede adapters would utilize queues in some constellations]. Patch #4 fixes a leak of mapped addresses; When iommu is enabled, offloaded storage protocols might eventually run out of resources and fail to map additional buffers. Patches #6,#7 were missing in the initial iSCSI infrastructure submissions, and would hamper qedi's stability when it reaches out-of-order scenarios. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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Mintz, Yuval authored
Missing in the initial submission, qed fails to propagate qedi's request to enable OOO to firmware. Fixes: fc831825 ("qed: Add support for hardware offloaded iSCSI") Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mintz, Yuval authored
Need to set the number of entries in database, otherwise the logic would quickly surpass the array. Fixes: 1d6cff4f ("qed: Add iSCSI out of order packet handling") Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Ram Amrani authored
Before iterating over the the LL2 Rx ring, the ring's spinlock is taken via spin_lock_irqsave(). The actual processing of the packet [including handling by the protocol driver] is done without said lock, so qed releases the spinlock and re-claims it afterwards. Problem is that the final spin_lock_irqrestore() at the end of the iteration uses the original flags saved from the initial irqsave() instead of the flags from the most recent irqsave(). So it's possible that the interrupt status would be incorrect at the end of the processing. Fixes: 0a7fb11c ("qed: Add Light L2 support"); CC: Ram Amrani <Ram.Amrani@cavium.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mintz, Yuval authored
Fixes: fc831825 ("qed: Add support for hardware offloaded iSCSI") Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mintz, Yuval authored
When receiving an Rx LL2 packet, qed fails to unmap the previous buffer. Fixes: 0a7fb11c ("qed: Add Light L2 support"); Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Tomer Tayar authored
Current Logic would allow the creation of a chain with U32_MAX + 1 elements, when the actual maximum supported by the driver infrastructure is U32_MAX. Fixes: a91eb52a ("qed: Revisit chain implementation") Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Ram Amrani authored
The Doorbell HW block can be configured at a granularity of 16 x CIDs, so we need to make sure that the actual number of CIDs configured would be a multiplication of 16. Today, when RoCE is enabled - given that the number is unaligned, doorbelling the higher CIDs would fail to reach the firmware and would eventually timeout. Fixes: dbb799c3 ("qed: Initialize hardware for new protocols") Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller authored
Jiri Pirko says: ==================== mlxsw: Couple of fixes Couple or small fixes. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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Jiri Pirko authored
The num_rec field is 8 bit, so the maximal count number is 255. This fixes vlans learning not being enabled for wider ranges than 255. Fixes: a4feea74 ("mlxsw: reg: Add Switch Port VLAN MAC Learning register definition") Signed-off-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Jiri Pirko authored
The num_rec field is 8 bit, so the maximal count number is 255. This fixes vlans not being enabled for wider ranges than 255. Fixes: b2e345f9 ("mlxsw: reg: Add Switch Port VID and Switch Port VLAN Membership registers definitions") Signed-off-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Vlad Yasevich authored
When we notify peers of potential changes, it's also good to update IGMP memberships. For example, during VM migration, updating IGMP memberships will redirect existing multicast streams to the VM at the new location. Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Hannes Frederic Sowa authored
This patch fixes a memory leak, which happens if the connection request is not fulfilled between parsing the DCCP options and handling the SYN (because e.g. the backlog is full), because we forgot to free the list of ack vectors. Reported-by: Jianwen Ji <jiji@redhat.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Hannes Frederic Sowa authored
aszlig observed failing ssh tunnels (-w) during initialization since commit cc9da6cc ("ipv6: addrconf: use stable address generator for ARPHRD_NONE"). We already had reports that the mentioned commit breaks Juniper VPN connections. I can't clearly say that the Juniper VPN client has the same problem, but it is worth a try to hint to this patch. Because of the early generation of link local addresses, the kernel now can start asking for routers on the local subnet much earlier than usual. Those router solicitation packets arrive inside the ssh channels and should be transmitted to the tun fd before the configuration scripts might have upped the interface and made it ready for transmission. ssh polls on the interface and receives back a POLL_OUT. It tries to send the earily router solicitation packet to the tun interface. Unfortunately it hasn't been up'ed yet by config scripts, thus failing with -EIO. ssh doesn't retry again and considers the tun interface broken forever. Link: https://bugzilla.kernel.org/show_bug.cgi?id=121131 Fixes: cc9da6cc ("ipv6: addrconf: use stable address generator for ARPHRD_NONE") Cc: Bjørn Mork <bjorn@mork.no> Reported-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Reported-by: Jonas Lippuner <jonas@lippuner.ca> Cc: Jonas Lippuner <jonas@lippuner.ca> Reported-by: aszlig <aszlig@redmoonstudios.org> Cc: aszlig <aszlig@redmoonstudios.org> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Jon Maxwell authored
As Eric Dumazet pointed out this also needs to be fixed in IPv6. v2: Contains the IPv6 tcp/Ipv6 dccp patches as well. We have seen a few incidents lately where a dst_enty has been freed with a dangling TCP socket reference (sk->sk_dst_cache) pointing to that dst_entry. If the conditions/timings are right a crash then ensues when the freed dst_entry is referenced later on. A Common crashing back trace is: #8 [] page_fault at ffffffff8163e648 [exception RIP: __tcp_ack_snd_check+74] . . #9 [] tcp_rcv_established at ffffffff81580b64 #10 [] tcp_v4_do_rcv at ffffffff8158b54a #11 [] tcp_v4_rcv at ffffffff8158cd02 #12 [] ip_local_deliver_finish at ffffffff815668f4 #13 [] ip_local_deliver at ffffffff81566bd9 #14 [] ip_rcv_finish at ffffffff8156656d #15 [] ip_rcv at ffffffff81566f06 #16 [] __netif_receive_skb_core at ffffffff8152b3a2 #17 [] __netif_receive_skb at ffffffff8152b608 #18 [] netif_receive_skb at ffffffff8152b690 #19 [] vmxnet3_rq_rx_complete at ffffffffa015eeaf [vmxnet3] #20 [] vmxnet3_poll_rx_only at ffffffffa015f32a [vmxnet3] #21 [] net_rx_action at ffffffff8152bac2 #22 [] __do_softirq at ffffffff81084b4f #23 [] call_softirq at ffffffff8164845c #24 [] do_softirq at ffffffff81016fc5 #25 [] irq_exit at ffffffff81084ee5 #26 [] do_IRQ at ffffffff81648ff8 Of course it may happen with other NIC drivers as well. It's found the freed dst_entry here: 224 static bool tcp_in_quickack_mode(struct sock *sk)
↩ 225 {↩ 226 ▹ const struct inet_connection_sock *icsk = inet_csk(sk);↩ 227 ▹ const struct dst_entry *dst = __sk_dst_get(sk);↩ 228↩ 229 ▹ return (dst && dst_metric(dst, RTAX_QUICKACK)) ||↩ 230 ▹ ▹ (icsk->icsk_ack.quick && !icsk->icsk_ack.pingpong);↩ 231 }↩ But there are other backtraces attributed to the same freed dst_entry in netfilter code as well. All the vmcores showed 2 significant clues: - Remote hosts behind the default gateway had always been redirected to a different gateway. A rtable/dst_entry will be added for that host. Making more dst_entrys with lower reference counts. Making this more probable. - All vmcores showed a postitive LockDroppedIcmps value, e.g: LockDroppedIcmps 267 A closer look at the tcp_v4_err() handler revealed that do_redirect() will run regardless of whether user space has the socket locked. This can result in a race condition where the same dst_entry cached in sk->sk_dst_entry can be decremented twice for the same socket via: do_redirect()->__sk_dst_check()-> dst_release(). Which leads to the dst_entry being prematurely freed with another socket pointing to it via sk->sk_dst_cache and a subsequent crash. To fix this skip do_redirect() if usespace has the socket locked. Instead let the redirect take place later when user space does not have the socket locked. The dccp/IPv6 code is very similar in this respect, so fixing it there too. As Eric Garver pointed out the following commit now invalidates routes. Which can set the dst->obsolete flag so that ipv4_dst_check() returns null and triggers the dst_release(). Fixes: ceb33206 ("ipv4: Kill routes during PMTU/redirect updates.") Cc: Eric Garver <egarver@redhat.com> Cc: Hannes Sowa <hsowa@redhat.com> Signed-off-by: Jon Maxwell <jmaxwell37@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> -
Zhao Qiang authored
1. modify bd_status from u32 to u16 in function hdlc_rx_done, because bd_status register is 16bits 2. write bd_length register before writing bd_status register Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull some more powerpc fixes from Michael Ellerman: "The main item is the addition of the Power9 Machine Check handler. This was delayed to make sure some details were correct, and is as minimal as possible. The rest is small fixes, two for the Power9 PMU, two dealing with obscure toolchain problems, two for the PowerNV IOMMU code (used by VFIO), and one to fix a crash on 32-bit machines with macio devices due to missing dma_ops. Thanks to: Alexey Kardashevskiy, Cyril Bur, Larry Finger, Madhavan Srinivasan, Nicholas Piggin" * tag 'powerpc-4.11-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/64s: POWER9 machine check handler powerpc/64s: allow machine check handler to set severity and initiator powerpc/64s: fix handling of non-synchronous machine checks powerpc/pmac: Fix crash in dma-mapping.h with NULL dma_ops powerpc/powernv/ioda2: Update iommu table base on ownership change powerpc/powernv/ioda2: Gracefully fail if too many TCE levels requested selftests/powerpc: Replace stxvx and lxvx with stxvd2x/lxvd2x powerpc/perf: Handle sdar_mode for marked event in power9 powerpc/perf: Fix perf_get_data_addr() for power9 DD1 powerpc/boot: Fix zImage TOC alignment
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- 13 Mar, 2017 13 commits
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Nicolas Dichtel authored
The required changes in the function vxlan_dev_create() were missing in commit 8bcdc4f3. The vxlan device is not registered anymore after this patch and the error path causes an stack dump: WARNING: CPU: 3 PID: 1498 at net/core/dev.c:6713 rollback_registered_many+0x9d/0x3f0 Fixes: 8bcdc4f3 ("vxlan: add changelink support") CC: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Andrey Vagin authored
The previous idea was to check whether a net namespace is in net_exit_list or not. It doesn't work, because net->exit_list is used in __register_pernet_operations and __unregister_pernet_operations where all namespaces are added to a temporary list to make cleanup in a error case, so list_empty(&net->exit_list) always returns false. Reported-by: Mantas Mikulėnas <grawity@gmail.com> Fixes: 002d8a1a ("net: skip genenerating uevents for network namespaces that are exiting") Signed-off-by: Andrei Vagin <avagin@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.infradead.org/linux-platform-drivers-x86Linus Torvalds authored
Pull x86 platform driver updates from Darren Hart: "Asus fixes for the airplane LED and a long awaited fujitsu cleanup. asus-wmi: - Remove quirk_no_rfkill - Detect quirk_no_rfkill from the DSDT fujitsu-laptop: - remove redundant MODULE_ALIAS entries - autodetect LCD interface on all models - simplify acpi_bus_register_driver() error handling - remove redundant forward declarations - replace numeric values with constants - rename FUNC_RFKILL to FUNC_FLAGS - make platform-related variables match naming convention - replace "hotkey" with "laptop" in symbol names - clearly denote backlight-related symbols" * tag 'platform-drivers-x86-v4.11-2' of git://git.infradead.org/linux-platform-drivers-x86: platform/x86: asus-wmi: Remove quirk_no_rfkill platform/x86: asus-wmi: Detect quirk_no_rfkill from the DSDT platform/x86: fujitsu-laptop: remove redundant MODULE_ALIAS entries platform/x86: fujitsu-laptop: autodetect LCD interface on all models platform/x86: fujitsu-laptop: simplify acpi_bus_register_driver() error handling platform/x86: fujitsu-laptop: remove redundant forward declarations platform/x86: fujitsu-laptop: replace numeric values with constants platform/x86: fujitsu-laptop: rename FUNC_RFKILL to FUNC_FLAGS platform/x86: fujitsu-laptop: make platform-related variables match naming convention platform/x86: fujitsu-laptop: replace "hotkey" with "laptop" in symbol names platform/x86: fujitsu-laptop: clearly denote backlight-related symbols
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Florian Westphal authored
Andreas reports kernel oops during rmmod of the br_netfilter module. Hannes debugged the oops down to a NULL rt6info->rt6i_indev. Problem is that br_netfilter has the nasty concept of adding a fake rtable to skb->dst; this happens in a br_netfilter prerouting hook. A second hook (in bridge LOCAL_IN) is supposed to remove these again before the skb is handed up the stack. However, on module unload hooks get unregistered which means an skb could traverse the prerouting hook that attaches the fake_rtable, while the 'fake rtable remove' hook gets removed from the hooklist immediately after. Fixes: 34666d46 ("netfilter: bridge: move br_netfilter out of the core") Reported-by: Andreas Karis <akaris@redhat.com> Debugged-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Florian Westphal authored
ip6_fragment, in case skb has a fraglist, checks if the skb is cloned. If it is, it will move to the 'slow path' and allocates new skbs for each fragment. However, right before entering the slowpath loop, it updates the nexthdr value of the last ipv6 extension header to NEXTHDR_FRAGMENT, to account for the fragment header that will be inserted in the new ipv6-fragment skbs. In case original skb is cloned this munges nexthdr value of another skb. Avoid this by doing the nexthdr update for each of the new fragment skbs separately. This was observed with tcpdump on a bridge device where netfilter ipv6 reassembly is active: tcpdump shows malformed fragment headers as the l4 header (icmpv6, tcp, etc). is decoded as a fragment header. Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Reported-by: Andreas Karis <akaris@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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Johan Hovold authored
Make sure to check the number of endpoints to avoid dereferencing a NULL-pointer or accessing memory beyond the endpoint array should a malicious device lack the expected endpoints. The endpoints are specifically dereferenced in the i2400m_bootrom_init path during probe (e.g. in i2400mu_tx_bulk_out). Fixes: f398e424 ("i2400m/USB: probe/disconnect, dev init/shutdown and reset backends") Cc: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Johan Hovold authored
Make sure to check the number of endpoints to avoid dereferencing a NULL-pointer should a malicious device lack endpoints. Fixes: cf7776dc ("[PATCH] isdn4linux: Siemens Gigaset drivers - direct USB connection") Cc: stable <stable@vger.kernel.org> # 2.6.17 Cc: Hansjoerg Lipp <hjlipp@web.de> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Sabrina Dubroca authored
Commit 27596472 ("ipv6: fix ECMP route replacement") introduced a loop that removes all siblings of an ECMP route that is being replaced. However, this loop doesn't stop when it has replaced siblings, and keeps removing other routes with a higher metric. We also end up triggering the WARN_ON after the loop, because after this nsiblings < 0. Instead, stop the loop when we have taken care of all routes with the same metric as the route being replaced. Reproducer: =========== #!/bin/sh ip netns add ns1 ip netns add ns2 ip -net ns1 link set lo up for x in 0 1 2 ; do ip link add veth$x netns ns2 type veth peer name eth$x netns ns1 ip -net ns1 link set eth$x up ip -net ns2 link set veth$x up done ip -net ns1 -6 r a 2000::/64 nexthop via fe80::0 dev eth0 \ nexthop via fe80::1 dev eth1 nexthop via fe80::2 dev eth2 ip -net ns1 -6 r a 2000::/64 via fe80::42 dev eth0 metric 256 ip -net ns1 -6 r a 2000::/64 via fe80::43 dev eth0 metric 2048 echo "before replace, 3 routes" ip -net ns1 -6 r | grep -v '^fe80\|^ff00' echo ip -net ns1 -6 r c 2000::/64 nexthop via fe80::4 dev eth0 \ nexthop via fe80::5 dev eth1 nexthop via fe80::6 dev eth2 echo "after replace, only 2 routes, metric 2048 is gone" ip -net ns1 -6 r | grep -v '^fe80\|^ff00' Fixes: 27596472 ("ipv6: fix ECMP route replacement") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Reviewed-by: Xin Long <lucien.xin@gmail.com> Reviewed-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
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Kirill A. Shutemov authored
gup_p4d_range() should call gup_pud_range(), not itself. [ This was not noticed on x86: this is the HAVE_GENERIC_RCU_GUP code used by arm[64] and powerpc - Linus ] Fixes: c2febafc ("mm: convert generic code to 5-level paging") Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reported-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Reported-by: Anton Blanchard <anton@samba.org> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Daniel Borkmann authored
Improve bpf_{prog,jit_binary}_{un,}lock_ro() by throwing a one-time warning in case of an error when the image couldn't be set read-only, and also mark struct bpf_prog as locked when bpf_prog_lock_ro() was called. Reason for the latter is that bpf_prog_unlock_ro() is called from various places including error paths, and we shouldn't mess with page attributes when really not needed. For bpf_jit_binary_unlock_ro() this is not needed as jited flag implicitly indicates this, thus for archs with ARCH_HAS_SET_MEMORY we're guaranteed to have a previously locked image. Overall, this should also help us to identify any further potential issues with set_memory_*() helpers. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Alexei Starovoitov authored
Recent merge of 'linux-kselftest-4.11-rc1' tree broke bpf test build. None of the tests were building and test_verifier.c had tons of compiler errors. Fix it and add #ifdef CAP_IS_SUPPORTED to support old versions of libcap. Tested on centos 6.8 and 7 Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Tested-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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David Ahern authored
Multipath routes can be rendered usesless when a device in one of the paths is deleted. For example: $ ip -f mpls ro ls 100 nexthop as to 200 via inet 172.16.2.2 dev virt12 nexthop as to 300 via inet 172.16.3.2 dev br0 101 nexthop as to 201 via inet6 2000:2::2 dev virt12 nexthop as to 301 via inet6 2000:3::2 dev br0 $ ip li del br0 When br0 is deleted the other hop is not considered in mpls_select_multipath because of the alive check -- rt_nhn_alive is 0. rt_nhn_alive is decremented once in mpls_ifdown when the device is taken down (NETDEV_DOWN) and again when it is deleted (NETDEV_UNREGISTER). For a 2 hop route, deleting one device drops the alive count to 0. Since devices are taken down before unregistering, the decrement on NETDEV_UNREGISTER is redundant. Fixes: c89359a4 ("mpls: support for dead routes") Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Igor Druzhinin authored
In some cases during XenBus disconnect event handling and subsequent queue resource release there may be some TX handlers active on other processors. Use RCU in order to synchronize with them. Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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