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2017-06-02ksm: prevent crash after write_protect_page failsAndrea Arcangeli
"err" needs to be left set to -EFAULT if split_huge_page succeeds. Otherwise if "err" gets clobbered with zero and write_protect_page fails, try_to_merge_one_page() will succeed instead of returning -EFAULT and then try_to_merge_with_ksm_page() will continue thinking kpage is a PageKsm when in fact it's still an anonymous page. Eventually it'll crash in page_add_anon_rmap. This has been reproduced on Fedora25 kernel but I can reproduce with upstream too. The bug was introduced in commit f765f540598a ("ksm: prepare to new THP semantics") introduced in v4.5. page:fffff67546ce1cc0 count:4 mapcount:2 mapping:ffffa094551e36e1 index:0x7f0f46673 flags: 0x2ffffc0004007c(referenced|uptodate|dirty|lru|active|swapbacked) page dumped because: VM_BUG_ON_PAGE(!PageLocked(page)) page->mem_cgroup:ffffa09674bf0000 ------------[ cut here ]------------ kernel BUG at mm/rmap.c:1222! CPU: 1 PID: 76 Comm: ksmd Not tainted 4.9.3-200.fc25.x86_64 #1 RIP: do_page_add_anon_rmap+0x1c4/0x240 Call Trace: page_add_anon_rmap+0x18/0x20 try_to_merge_with_ksm_page+0x50b/0x780 ksm_scan_thread+0x1211/0x1410 ? prepare_to_wait_event+0x100/0x100 ? try_to_merge_with_ksm_page+0x780/0x780 kthread+0xd9/0xf0 ? kthread_park+0x60/0x60 ret_from_fork+0x25/0x30 Fixes: f765f54059 ("ksm: prepare to new THP semantics") Link: http://lkml.kernel.org/r/20170513131040.21732-1-aarcange@redhat.com Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Reported-by: Federico Simoncelli <fsimonce@redhat.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-06-03Merge branches 'acpi-button', 'acpica' and 'acpi-sysfs'Rafael J. Wysocki
* acpi-button: Revert "ACPI / button: Change default behavior to lid_init_state=open" * acpica: ACPICA: Tables: Fix regression introduced by a too early mechanism enabling * acpi-sysfs: ACPI / sysfs: fix acpi_get_table() leak / acpi-sysfs denial of service
2017-06-03Merge branch 'pm-cpufreq'Rafael J. Wysocki
* pm-cpufreq: cpufreq: kirkwood-cpufreq:- Handle return value of clk_prepare_enable() cpufreq: cpufreq_register_driver() should return -ENODEV if init fails
2017-06-02Merge tag 'xfs-4.12-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds
Pull XFS fix from Darrick Wong: "I've one more bugfix for you for 4.12-rc4: Fix an unmount hang due to a race in io buffer accounting" * tag 'xfs-4.12-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: xfs: use ->b_state to fix buffer I/O accounting release race
2017-06-02Merge tag 'arm64-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Catalin Marinas: "ACPI-related fixes for arm64: - GICC MADT entry validity check fix - Skip IRQ registration with pmu=off in an ACPI guest - struct acpi_pci_root_ops freeing on error path" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: ARM64/ACPI: Fix BAD_MADT_GICC_ENTRY() macro implementation drivers/perf: arm_pmu_acpi: avoid perf IRQ init when guest PMU is off ARM64: PCI: Fix struct acpi_pci_root_ops allocation failure path
2017-06-02Merge tag 'ceph-for-4.12-rc4' of git://github.com/ceph/ceph-clientLinus Torvalds
Pull ceph fix from Ilya Dryomov: "A small fix for rbd FALLOC_FL_ZERO_RANGE/PUNCH_HOLE handling breakage introduced in -rc1" * tag 'ceph-for-4.12-rc4' of git://github.com/ceph/ceph-client: rbd: implement REQ_OP_WRITE_ZEROES
2017-06-02scsi: cxgb4i: libcxgbi: in error case RST tcp connVarun Prakash
If logout response is not received and ->ep_disconnect() is called then close tcp conn by RST instead of FIN to cleanup conn resources immediately. Also move ->csk_push_tx_frames() above 'done:' to avoid calling ->csk_push_tx_frames() in error cases. Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-02Merge tag 'for-4.12/dm-fixes-3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper fixes from Mike Snitzer: - a DM verity fix for a mode when no salt is used - a fix to DM to account for the possibility that PREFLUSH or FUA are used without the SYNC flag if the underlying storage doesn't have a volatile write-cache - a DM ioctl memory allocation flag fix to use __GFP_HIGH to allow emergency forward progress (by using memory reserves as last resort) - a small DM integrity cleanup to use kvmalloc() instead of duplicating the same * tag 'for-4.12/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm: make flush bios explicitly sync dm ioctl: restore __GFP_HIGH in copy_params() dm integrity: use kvmalloc() instead of dm_integrity_kvmalloc() dm verity: fix no salt use case
2017-06-02Merge tag 'md/4.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/mdLinus Torvalds
Pull MD fixes from Shaohua Li: "Several patches for MD. One notable is making flush bios sync, others fix small issues" * tag 'md/4.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md: md: Make flush bios explicitely sync md: report sector of stripes with check mismatches md: uuid debug statement now in processor byte order. md-cluster: fix potential lock issue in add_new_disk
2017-06-02Merge branch 'for-linus' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block fixes from Jens Axboe: "A set of fixes that should go into the next -rc. This contains: - A use-after-free in the request_list exit for the legacy IO path, from Bart. - A fix for CFQ, fixing a recent regression with the conversion to higher resolution timing for iops mode. From Hou Tao. - A single fix for nbd, split in two patches, fixing a leak of a data structure. - A regression fix from Keith, ensuring that callers of blk_mq_update_nr_hw_queues() hold the right lock" * 'for-linus' of git://git.kernel.dk/linux-block: block: Avoid that blk_exit_rl() triggers a use-after-free cfq-iosched: fix the delay of cfq_group's vdisktime under iops mode blk-mq: Take tagset lock when updating hw queues nbd: don't leak nbd_config nbd: nbd_reset() call in nbd_dev_add() is redundant
2017-06-02Merge tag 'drm-dp-quirk-for-v4.12-rc4' of ↵Linus Torvalds
git://people.freedesktop.org/~airlied/linux Pull drm displayport quirk support: "DP quirk for usb c dongles. As mentioned I have a separate request for fixing a regression, but also keeping the broken hw working, for certain USB-C DP adapters they require a minimised n/m parameters, but an attempt to do this generically has failed, we need to quirk these specific adapters. However doing it generically regressed some eDP panels. This pull adds the infrastructure and a quirk for the adapter" * tag 'drm-dp-quirk-for-v4.12-rc4' of git://people.freedesktop.org/~airlied/linux: drm/i915: Detect USB-C specific dongles before reducing M and N drm/dp: start a DPCD based DP sink/branch device quirk database drm/i915: use drm DP helper to read DPCD desc drm/dp: add helper for reading DP sink/branch device desc from DPCD
2017-06-02virtio_net: lower limit on buffer sizeMichael S. Tsirkin
commit d85b758f72b0 ("virtio_net: fix support for small rings") was supposed to increase the buffer size for small rings but had an unintentional side effect of decreasing it for large rings. This seems to break some setups - it's not yet clear why, but increasing buffer size back to what it was before helps. Fixes: d85b758f72b0 ("virtio_net: fix support for small rings") Reported-by: Mikulas Patocka <mpatocka@redhat.com> Reported-by: "J. Bruce Fields" <bfields@fieldses.org> Tested-by: Mikulas Patocka <mpatocka@redhat.com> Tested-by: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02qlcnic: Fix tunnel offload for 82xx adaptersChopra, Manish
Qlogic's 82xx series adapter doesn't support tunnel offloads, driver incorrectly assumes that it is supported and causes firmware hang while running tunnel IO. This patch fixes this by not advertising tunnel offloads for 82xx adapters. Signed-off-by: Manish Chopra <manish.chopra@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02vxlan: fix use-after-free on deletionMark Bloch
Adding a vxlan interface to a socket isn't symmetrical, while adding is done in vxlan_open() the deletion is done in vxlan_dellink(). This can cause a use-after-free error when we close the vxlan interface before deleting it. We add vxlan_vs_del_dev() to match vxlan_vs_add_dev() and call it from vxlan_stop() to match the call from vxlan_open(). Fixes: 56ef9c909b40 ("vxlan: Move socket initialization to within rtnl scope") Acked-by: Jiri Benc <jbenc@redhat.com> Tested-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Mark Bloch <markb@mellanox.com> Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02tcp: remove unnecessary skb_reset_tail_pointer()Eric Dumazet
__pskb_trim_head() does not need to reset skb tail pointer. Also change the comments, __pskb_pull_head() does not exist. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02ibmvnic: Remove module author mailing addressThomas Falcon
The original author left the project and so far has not responded to emails sent to the listed address. Signed-off-by: John Allen <jallen@linux.vnet.ibm.com> Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02bpf: Remove the capability check for cgroup skb eBPF programChenbo Feng
Currently loading a cgroup skb eBPF program require a CAP_SYS_ADMIN capability while attaching the program to a cgroup only requires the user have CAP_NET_ADMIN privilege. We can escape the capability check when load the program just like socket filter program to make the capability requirement consistent. Change since v1: Change the code style in order to be compliant with checkpatch.pl preference Signed-off-by: Chenbo Feng <fengc@google.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02bpf: Allow CGROUP_SKB eBPF program to access sk_buffChenbo Feng
This allows cgroup eBPF program to classify packet based on their protocol or other detail information. Currently program need CAP_NET_ADMIN privilege to attach a cgroup eBPF program, and A process with CAP_NET_ADMIN can already see all packets on the system, for example, by creating an iptables rules that causes the packet to be passed to userspace via NFLOG. Signed-off-by: Chenbo Feng <fengc@google.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02net: phy: use of_mdio_parse_addrJon Mason
use of_mdio_parse_addr() in place of an OF read of reg and a bounds check (which is litterally the exact same thing that of_mdio_parse_addr() does) Signed-off-by: Jon Mason <jon.mason@broadcom.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02net: ethernet: stmmac: Fix altr_tse_pcs SGMII InitializationThor Thayer
Fix NETDEV WATCHDOG timeout on startup by adding missing register writes that properly setup SGMII. Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com> Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02tcp: use TS opt on RTTs for congestion controlYuchung Cheng
Currently when a data packet is retransmitted, we do not compute an RTT sample for congestion control due to Kern's check. Therefore the congestion control that uses RTT signals may not receive any update during loss recovery which could last many round trips. For example, BBR and Vegas may not be able to update its min RTT estimation if the network path has shortened until it recovers from losses. This patch mitigates that by using TCP timestamp options for RTT measurement for congestion control. Note that we already use timestamps for RTT estimation. Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02tcp: disallow cwnd undo when switching congestion controlYuchung Cheng
When the sender switches its congestion control during loss recovery, if the recovery is spurious then it may incorrectly revert cwnd and ssthresh to the older values set by a previous congestion control. Consider a congestion control (like BBR) that does not use ssthresh and keeps it infinite: the connection may incorrectly revert cwnd to an infinite value when switching from BBR to another congestion control. This patch fixes it by disallowing such cwnd undo operation upon switching congestion control. Note that undo_marker is not reset s.t. the packets that were incorrectly marked lost would be corrected. We only avoid undoing the cwnd in tcp_undo_cwnd_reduction(). Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02liquidio: Fix checkpatch errors with references crossing single lineSatanand Burla
Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02tools: hv: set hotplug for VF on Susesixiao@microsoft.com
On HyperV, the VF interface can be offered by a host at any time. Mark the VF interface as hotplug, to make sure it will be brought up automatically when it is registered. Signed-off-by: Simon Xiao <sixiao@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02tools: hv: set allow-hotplug for VF on Ubuntusixiao@microsoft.com
On HyperV, the VF interface can be offered by a host at any time. Mark the VF interface as hotplug, to make sure it will be brought up automatically when it is registered. Signed-off-by: Simon Xiao <sixiao@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02liquidio: VF interrupt initialization cleanupRick Farrington
Set initialization state variable to (reflect interrupt initialization) at correct time (immediately after having configured interrupts). This fixes problem of inconsistent IRQ allocation in case of [obscure] failure when negotiating with PF driver during init. Clean-up of interrupt enablement during initialization & avoid potential race condition with chip-specific code (i.e. perform interrupt control in main driver module). Added explanatory comments regarding interrupt enablement. Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com> Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02cxgb4: fix incorrect cim_la output for T6Ganesh Goudar
take care of UpDbgLaRdPtr[0-3] restriction for T6. Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02cxgb4: avoid enabling napi twice to the same queueGanesh Goudar
Take uld mutex to avoid race between cxgb_up() and cxgb4_register_uld() to enable napi for the same uld queue. Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt()Ben Hutchings
xfrm6_find_1stfragopt() may now return an error code and we must not treat it as a length. Fixes: 2423496af35d ("ipv6: Prevent overrun when parsing v6 header options") Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Acked-by: Craig Gallek <kraig@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02Merge branch 'sctp-improve-asoc-streams-management'David S. Miller
Xin Long says: ==================== sctp: improve asoc streams management This patchset changes to define asoc->stream as an object, and also improve some codes to make it more clearly. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02sctp: merge sctp_stream_new and sctp_stream_initXin Long
Since last patch, sctp doesn't need to alloc memory for asoc->stream any more. sctp_stream_new and sctp_stream_init both are used to alloc memory for stream.in or stream.out, and their names are also confusing. This patch is to merge them into sctp_stream_init, and only pass stream and streamcnt parameters into it, instead of the whole asoc. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02sctp: define the member stream as an object instead of pointer in asocXin Long
As Marcelo's suggestion, stream is a fixed size member of asoc and would not grow with more streams. To avoid an allocation for it, this patch is to define it as an object instead of pointer and update the places using it, also create sctp_stream_update() called in sctp_assoc_update() to migrate the stream info from one stream to another. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02Merge branch '40GbE' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue Jeff Kirsher says: ==================== 40GbE Intel Wired LAN Driver Updates 2017-06-01 This series contains updates to i40e, i40evf and the "new" AVF virtchnl. This is the introduction of the Intel(R) Ethernet Adaptive Virtual Function driver code and device ID, as presented at the NetDEV 1.2 conference in 2016. http://netdevconf.org/1.2/session.html?anjali-singhai The idea is to convert the interface between the i40evf driver and the parent i40e PF driver to be generic, as the i40evf driver should in the future be able to run on top of other Intel PF drivers, and negotiate any features beyond a "base expected" set. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02Merge tag 'sound-4.12-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "This contains the fixes for a few reported regression for HD-audio and USB-audio. All small, trivial, and boring" * tag 'sound-4.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda - Fix applying MSI dual-codec mobo quirk ALSA: usb: Avoid VLA in mixer_us16x08.c ALSA: usb: Fix a typo in Tascam US-16x08 mixer element Revert "ALSA: usb-audio: purge needless variable length array"
2017-06-02Merge tag 'dmaengine-fix-4.12-rc4' of ↵Linus Torvalds
git://git.infradead.org/users/vkoul/slave-dma Pull dmaengine fixes from Vinod Koul: "Here is the dmaengine fixes request for 4.12. Fixes bunch of issues in the driver, npthing exciting though.. - mv_xor_v2 driver fixes for handling descriptors, tx_submit implementation, removing interrupt coalescing and setting DMA mask properly - fix usb-dmac DMAOR AE bit definition - fix ep93xx start buffer from BASE0 and not drain the transfers in terminate_all - fix rcar-dmac to use right descriptor pointer for residue calculation - pl330 fix warn for irq freeup" * tag 'dmaengine-fix-4.12-rc4' of git://git.infradead.org/users/vkoul/slave-dma: dmaengine: pl330: fix warning in pl330_remove rcar-dmac: fixup descriptor pointer for descriptor mode dmaengine: ep93xx: Don't drain the transfers in terminate_all() dmaengine: ep93xx: Always start from BASE0 dmaengine: usb-dmac: Fix DMAOR AE bit definition dmaengine: mv_xor_v2: set DMA mask to 40 bits dmaengine: mv_xor_v2: remove interrupt coalescing dmaengine: mv_xor_v2: fix tx_submit() implementation dmaengine: mv_xor_v2: enable XOR engine after its configuration dmaengine: mv_xor_v2: do not use descriptors not acked by async_tx dmaengine: mv_xor_v2: properly handle wrapping in the array of HW descriptors dmaengine: mv_xor_v2: handle mv_xor_v2_prep_sw_desc() error properly
2017-06-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid Pull HID fixes from Jiri Kosina: - corner-case oops fixes for Asus and Wacom drivers from Carlo Caione and Jason Gerecke - power management fix (reported on SIS0817 touchscreen) for i2c-hid devices from Hans de Goede - device-id-specific fixes and quirks from Hans de Goede, Diego Elio Pettenò and Che-Liang Chiou * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: HID: asus: Stop underlying hardware on remove HID: i2c: Call acpi_device_fix_up_power for ACPI-enumerated devices HID: asus: Add support for T100 keyboard HID: elecom: extend to fix the descriptor for DEFT trackballs HID: magicmouse: Set multi-touch keybits for Magic Mouse HID: wacom: Have wacom_tpc_irq guard against possible NULL dereference
2017-06-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching Pull livepatching fix from Jiri Kosina: "Kconfig dependency fix for livepatching infrastructure from Miroslav Benes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching: livepatch: Make livepatch dependent on !TRIM_UNUSED_KSYMS
2017-06-02Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: "Misc fixes: - revert a broken PAT commit that broke a number of systems - fix two preemptability warnings/bugs that can trigger under certain circumstances, in the debug code and in the microcode loader" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Revert "x86/PAT: Fix Xorg regression on CPUs that don't support PAT" x86/debug/32: Convert a smp_processor_id() call to raw to avoid DEBUG_PREEMPT warning x86/microcode/AMD: Change load_microcode_amd()'s param to bool to fix preemptibility bug
2017-06-02Merge branch 'efi-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull EFI fixes from Ingo Molnar: "Misc fixes: - three boot crash fixes for uncommon configurations - silence a boot warning under virtualization - plus a GCC 7 related (harmless) build warning fix" * 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi/bgrt: Skip efi_bgrt_init() in case of non-EFI boot x86/efi: Correct EFI identity mapping under 'efi=old_map' when KASLR is enabled x86/efi: Disable runtime services on kexec kernel if booted with efi=old_map efi: Remove duplicate 'const' specifiers efi: Don't issue error message when booted under Xen
2017-06-02drm: Fix oops + Xserver hang when unplugging USB drm devicesHans de Goede
commit a39be606f99d ("drm: Do a full device unregister when unplugging") causes backtraces like this one when unplugging an usb drm device while it is in use: usb 2-3: USB disconnect, device number 25 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 242 at drivers/gpu/drm/drm_mode_config.c:424 drm_mode_config_cleanup+0x220/0x280 [drm] ... RIP: 0010:drm_mode_config_cleanup+0x220/0x280 [drm] ... Call Trace: gm12u320_modeset_cleanup+0xe/0x10 [gm12u320] gm12u320_driver_unload+0x35/0x70 [gm12u320] drm_dev_unregister+0x3c/0xe0 [drm] drm_unplug_dev+0x12/0x60 [drm] gm12u320_usb_disconnect+0x36/0x40 [gm12u320] usb_unbind_interface+0x72/0x280 device_release_driver_internal+0x158/0x210 device_release_driver+0x12/0x20 bus_remove_device+0x104/0x180 device_del+0x1d2/0x350 usb_disable_device+0x9f/0x270 usb_disconnect+0xc6/0x260 ... [drm:drm_mode_config_cleanup [drm]] *ERROR* connector Unknown-1 leaked! ------------[ cut here ]------------ WARNING: CPU: 0 PID: 242 at drivers/gpu/drm/drm_mode_config.c:458 drm_mode_config_cleanup+0x268/0x280 [drm] ... <same Call Trace> ---[ end trace 80df975dae439ed6 ]--- general protection fault: 0000 [#1] SMP ... Call Trace: ? __switch_to+0x225/0x450 drm_mode_rmfb_work_fn+0x55/0x70 [drm] process_one_work+0x193/0x3c0 worker_thread+0x4a/0x3a0 ... RIP: drm_framebuffer_remove+0x62/0x3f0 [drm] RSP: ffffb776c39dfd98 ---[ end trace 80df975dae439ed7 ]--- After which the system is unusable this is caused by drm_dev_unregister getting called immediately on unplug, which calls the drivers unload function which calls drm_mode_config_cleanup which removes the framebuffer object while userspace is still holding a reference to it. Reverting commit a39be606f99d ("drm: Do a full device unregister when unplugging") leads to the following oops on unplug instead, when userspace closes the last fd referencing the drm_dev: sysfs group 'power' not found for kobject 'card1-Unknown-1' ------------[ cut here ]------------ WARNING: CPU: 0 PID: 2459 at fs/sysfs/group.c:237 sysfs_remove_group+0x80/0x90 ... RIP: 0010:sysfs_remove_group+0x80/0x90 ... Call Trace: dpm_sysfs_remove+0x57/0x60 device_del+0xfd/0x350 device_unregister+0x1a/0x60 drm_sysfs_connector_remove+0x39/0x50 [drm] drm_connector_unregister+0x5a/0x70 [drm] drm_connector_unregister_all+0x45/0xa0 [drm] drm_modeset_unregister_all+0x12/0x30 [drm] drm_dev_unregister+0xca/0xe0 [drm] drm_put_dev+0x32/0x60 [drm] drm_release+0x2f3/0x380 [drm] __fput+0xdf/0x1e0 ... ---[ end trace ecfb91ac85688bbe ]--- BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8 IP: down_write+0x1f/0x40 ... Call Trace: debugfs_remove_recursive+0x55/0x1b0 drm_debugfs_connector_remove+0x21/0x40 [drm] drm_connector_unregister+0x62/0x70 [drm] drm_connector_unregister_all+0x45/0xa0 [drm] drm_modeset_unregister_all+0x12/0x30 [drm] drm_dev_unregister+0xca/0xe0 [drm] drm_put_dev+0x32/0x60 [drm] drm_release+0x2f3/0x380 [drm] __fput+0xdf/0x1e0 ... ---[ end trace ecfb91ac85688bbf ]--- This is caused by the revert moving back to drm_unplug_dev calling drm_minor_unregister which does: device_del(minor->kdev); dev_set_drvdata(minor->kdev, NULL); /* safety belt */ drm_debugfs_cleanup(minor); Causing the sysfs entries to already be removed even though we still have references to them in e.g. drm_connector. Note we must call drm_minor_unregister to notify userspace of the unplug of the device, so calling drm_dev_unregister is not completely wrong the problem is that drm_dev_unregister does too much. This commit fixes drm_unplug_dev by not only reverting commit a39be606f99d ("drm: Do a full device unregister when unplugging") but by also adding a call to drm_modeset_unregister_all before the drm_minor_unregister calls to make sure all sysfs entries are removed before calling device_del(minor->kdev) thereby also fixing the second set of oopses caused by just reverting the commit. Fixes: a39be606f99d ("drm: Do a full device unregister when unplugging") Cc: stable@vger.kernel.org Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Jeffy <jeffy.chen@rock-chips.com> Cc: Marco Diego Aurélio Mesquita <marcodiegomesquita@gmail.com> Reported-by: Marco Diego Aurélio Mesquita <marcodiegomesquita@gmail.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/20170601115430.4113-1-hdegoede@redhat.com
2017-06-02Merge tag 'mac80211-for-davem-2017-06-02' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211 Johannes Berg says: ==================== Just two fixes: * fix the per-CPU drop counters to not be added to the rx_packets counter, but really the drop counter * fix TX aggregation start/stop callback races by setting bits instead of allocating and queueing an skb ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02Merge branch 'qed-Enhance-storage-APIs'David S. Miller
Yuval Mintz says: ==================== qed: Enhance storage APIs This series is intended to add additional information and features to the API between qed and its storage protocol drivers [qedi, qedf]. Patch #2 adds some information stored on device such as wwpn & wwnn to allow qedf utilize it; #1 fixes an issue with the reading of those values [which were unused until now]. Patch #3 would allow the protocol drivers access to images on persistent storage which is a prerequirement for adding boot from SAN support. Patch #4 adds infrastrucutre to a future feature for qedi. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02qed: Add support for changing iSCSI macMintz, Yuval
Enhance API between qedi and qed, allowing qedi to inform device's firmware when the iSCSI mac is to be changed. Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02qed: Support NVM-image reading APIMintz, Yuval
Storage drivers require images from the nvram in boot-from-SAN scenarios. This provides the necessary API between qed and the protocol drivers to perform such reads. Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02qed: Share additional information with qedfMintz, Yuval
Share several new tidbits with qedf: - wwpn & wwnn - Absolute pf-id [this one is actually meant for qedi as well] - Number of available CQs While we're at it, now that qedf will be aware of the available CQs we can add some validation on the inputs it provides. Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02qed: Correct order of wwnn and wwpnMintz, Yuval
Driver reads values via HSI splitting this 8-byte into 2 32-bit values and builds a single u64 field - but it does so by shifting the lower field instead of the higher. Luckily, we still don't use these fields for anything - but we're about to start. Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02net: dsa: Move dsa_switch_{suspend,resume} out of legacy.cFlorian Fainelli
dsa_switch_suspend() and dsa_switch_resume() are functions that belong in net/dsa/dsa.c and are not part of the legacy platform support code. Fixes: a6a71f19fe5e ("net: dsa: isolate legacy code") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02net: systemport: Fix missing Wake-on-LAN interrupt for SYSTEMPORT LiteFlorian Fainelli
On SYSTEMPORT Lite, since we have the main interrupt source in the first cell, the second cell is the Wake-on-LAN interrupt, yet the code was not properly updated to fetch the second cell, and instead looked at the third and non-existing cell for Wake-on-LAN. Fixes: 44a4524c54af ("net: systemport: Add support for SYSTEMPORT Lite") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02team: add macro MODULE_ALIAS_TEAM_MODE for team mode aliasZhang Shengju
Add a new macro MODULE_ALIAS_TEAM_MODE to unify and simplify the declaration of team mode alias. Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02perf stat: Only print NMI watchdog hint when enabledAndi Kleen
Only print the NMI watchdog hint when that watchdog it actually enabled. This avoids printing these unnecessarily. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/n/tip-lnw7edxnqsphkmeew857wz1i@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
generated by cgit (git 2.34.1) at 2025-09-24 02:54:34 +0000