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2016-04-07iommu: Don't overwrite domain pointer when there is no default_domainJoerg Roedel
IOMMU drivers that do not support default domains, but make use of the the group->domain pointer can get that pointer overwritten with NULL on device add/remove. Make sure this can't happen by only overwriting the domain pointer when it is NULL. Cc: stable@vger.kernel.org # v4.4+ Fixes: 1228236de5f9 ('iommu: Move default domain allocation to iommu_group_get_for_dev()') Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-04-07virtio: add VIRTIO_CONFIG_S_NEEDS_RESET device status bitStefan Hajnoczi
The VIRTIO 1.0 specification added the DEVICE_NEEDS_RESET device status bit in "VIRTIO-98: Add DEVICE_NEEDS_RESET". This patch defines the device status bit in the uapi header file so that both the kernel and userspace applications can use it. The bit is currently unused by the virtio guest drivers and vhost. According to the spec "a good implementation will try to recover by issuing a reset". This is not attempted here because it requires auditing the virtio drivers to ensure there are no resource leaks or crashes if the device needs to be reset mid-operation. See "2.1 Device Status Field" in the VIRTIO 1.0 specification for details. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-04-07MAINTAINERS: add entry for QEMUMichael S. Tsirkin
Gabriel merged support for QEMU FW CFG interface, but there's apparently no official maintainer. It's also possible that this will grow more interfaces in future. I'll happily co-maintain it and handle pull requests together with the rest of the PV stuff I maintain. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Gabriel Somlo <somlo@cmu.edu> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Gabriel Somlo <somlo@cmu.edu>
2016-04-07firmware: qemu_fw_cfg.c: hold ACPI global lock during device accessGabriel Somlo
Allowing for the future possibility of implementing AML-based (i.e., firmware-triggered) access to the QEMU fw_cfg device, acquire the global ACPI lock when accessing the device on behalf of the guest-side sysfs driver, to prevent any potential race conditions. Suggested-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-04-07virtio: virtio 1.0 cs04 spec compliance for resetMichael S. Tsirkin
The spec says: after writing 0 to device_status, the driver MUST wait for a read of device_status to return 0 before reinitializing the device. Cc: stable@vger.kernel.org Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com>
2016-04-07qemu_fw_cfg: don't leak kobj on init errorMichael S. Tsirkin
If platform_driver_register fails, we should cleanup fw_cfg_top_ko before exiting. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Gabriel Somlo <somlo@cmu.edu>
2016-04-07USB: option: add "D-Link DWM-221 B1" device idBjørn Mork
Thomas reports: "Windows: 00 diagnostics 01 modem 02 at-port 03 nmea 04 nic Linux: T: Bus=02 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#= 4 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=2001 ProdID=7e19 Rev=02.32 S: Manufacturer=Mobile Connect S: Product=Mobile Connect S: SerialNumber=0123456789ABCDEF C: #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option I: If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan I: If#= 5 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage" Reported-by: Thomas Schäfer <tschaefer@t-online.de> Cc: <stable@vger.kernel.org> Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Johan Hovold <johan@kernel.org>
2016-04-07m68k/defconfig: Update defconfigs for v4.6-rc2Geert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2016-04-07m68k: Wire up preadv2 and pwritev2Geert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2016-04-07USB: serial: cp210x: Adding GE Healthcare Device IDMartyn Welch
The CP2105 is used in the GE Healthcare Remote Alarm Box, with the Manufacturer ID of 0x1901 and Product ID of 0x0194. Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk> Cc: stable <stable@vger.kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2016-04-07ARC: [plat-axs103] Enable loop block devicesAlexey Brodkin
As mentioned in LTP's README.ARC: ------------->8------------ Requirements for the environment * Linux must be built with support of loop block devices. Thus it's necessary to enable these Linux kernel options: CONFIG_BLK_DEV CONFIG_BLK_DEV_LOOP ------------->8------------ enabling loop block devices. That among other things lead to additional 10 fatal signals appearing during LTP run. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-04-07Revert "ARC: [plat-axs10x] add Ethernet PHY description in .dts"Vineet Gupta
This reverts commit 667a490bdb6e27db0887d2ca515b907d6aa87118. This is needed to get ethernet(stmmac) working in 4.6-rc2 on axs103. 4.5 needed this fix, but apprently stmmac has gained some fixes which warrant reversal of this. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-04-07arc: Add our own implementation of fb_pgprotect()Alexey Brodkin
During mmaping of frame-buffer pages to user-space fb_protect() is called to set proper page settings. In case of ARC we need to mark pages that are mmaped to user as uncached because of 2 reasons: * Huge amount of data if passing through data cache will thrash cache a lot making cache almost useless for other less traffic hungry processes. * Data written by user in FB will be immediately available for hardware (such as PGU etc) without requirements to flush data cache regularly. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: linux-snps-arc@lists.infradead.org Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-04-07ARC: Don't source drivers/pci/pcie/Kconfig ourselvesAndreas Ziegler
Commit 5f8fc43217a0 ("PCI: Include pci/pcie/Kconfig directly from pci/Kconfig") in linux-next changed drivers/pci/Kconfig to include drivers/pci/pcie/Kconfig itself, so that architectures do not need to source both files themselves. ARC just recently gained PCI support through commit 6b3fb77998dd ("ARC: Add PCI support"), but this change was based on the old behaviour of the Kconfig files. This makes Kconfig now spit out the following warnings: drivers/pci/pcie/Kconfig:61:warning: choice value used outside its choice group drivers/pci/pcie/Kconfig:67:warning: choice value used outside its choice group drivers/pci/pcie/Kconfig:74:warning: choice value used outside its choice group This change updates the Kconfig file for ARC, dropping the now unnecessary 'source' statement, which makes the warning disappear. Signed-off-by: Andreas Ziegler <andreas.ziegler@fau.de> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-04-07USB: serial: ftdi_sio: Add support for ICP DAS I-756xU devicesJosh Boyer
A Fedora user reports that the ftdi_sio driver works properly for the ICP DAS I-7561U device. Further, the user manual for these devices instructs users to load the driver and add the ids using the sysfs interface. Add support for these in the driver directly so that the devices work out of the box instead of needing manual configuration. Reported-by: <thesource@mail.ru> CC: stable <stable@vger.kernel.org> Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2016-04-06Btrfs: fix file/data loss caused by fsync after rename and new inodeFilipe Manana
If we rename an inode A (be it a file or a directory), create a new inode B with the old name of inode A and under the same parent directory, fsync inode B and then power fail, at log tree replay time we end up removing inode A completely. If inode A is a directory then all its files are gone too. Example scenarios where this happens: This is reproducible with the following steps, taken from a couple of test cases written for fstests which are going to be submitted upstream soon: # Scenario 1 mkfs.btrfs -f /dev/sdc mount /dev/sdc /mnt mkdir -p /mnt/a/x echo "hello" > /mnt/a/x/foo echo "world" > /mnt/a/x/bar sync mv /mnt/a/x /mnt/a/y mkdir /mnt/a/x xfs_io -c fsync /mnt/a/x <power failure happens> The next time the fs is mounted, log tree replay happens and the directory "y" does not exist nor do the files "foo" and "bar" exist anywhere (neither in "y" nor in "x", nor the root nor anywhere). # Scenario 2 mkfs.btrfs -f /dev/sdc mount /dev/sdc /mnt mkdir /mnt/a echo "hello" > /mnt/a/foo sync mv /mnt/a/foo /mnt/a/bar echo "world" > /mnt/a/foo xfs_io -c fsync /mnt/a/foo <power failure happens> The next time the fs is mounted, log tree replay happens and the file "bar" does not exists anymore. A file with the name "foo" exists and it matches the second file we created. Another related problem that does not involve file/data loss is when a new inode is created with the name of a deleted snapshot and we fsync it: mkfs.btrfs -f /dev/sdc mount /dev/sdc /mnt mkdir /mnt/testdir btrfs subvolume snapshot /mnt /mnt/testdir/snap btrfs subvolume delete /mnt/testdir/snap rmdir /mnt/testdir mkdir /mnt/testdir xfs_io -c fsync /mnt/testdir # or fsync some file inside /mnt/testdir <power failure> The next time the fs is mounted the log replay procedure fails because it attempts to delete the snapshot entry (which has dir item key type of BTRFS_ROOT_ITEM_KEY) as if it were a regular (non-root) entry, resulting in the following error that causes mount to fail: [52174.510532] BTRFS info (device dm-0): failed to delete reference to snap, inode 257 parent 257 [52174.512570] ------------[ cut here ]------------ [52174.513278] WARNING: CPU: 12 PID: 28024 at fs/btrfs/inode.c:3986 __btrfs_unlink_inode+0x178/0x351 [btrfs]() [52174.514681] BTRFS: Transaction aborted (error -2) [52174.515630] Modules linked in: btrfs dm_flakey dm_mod overlay crc32c_generic ppdev xor raid6_pq acpi_cpufreq parport_pc tpm_tis sg parport tpm evdev i2c_piix4 proc [52174.521568] CPU: 12 PID: 28024 Comm: mount Tainted: G W 4.5.0-rc6-btrfs-next-27+ #1 [52174.522805] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS by qemu-project.org 04/01/2014 [52174.524053] 0000000000000000 ffff8801df2a7710 ffffffff81264e93 ffff8801df2a7758 [52174.524053] 0000000000000009 ffff8801df2a7748 ffffffff81051618 ffffffffa03591cd [52174.524053] 00000000fffffffe ffff88015e6e5000 ffff88016dbc3c88 ffff88016dbc3c88 [52174.524053] Call Trace: [52174.524053] [<ffffffff81264e93>] dump_stack+0x67/0x90 [52174.524053] [<ffffffff81051618>] warn_slowpath_common+0x99/0xb2 [52174.524053] [<ffffffffa03591cd>] ? __btrfs_unlink_inode+0x178/0x351 [btrfs] [52174.524053] [<ffffffff81051679>] warn_slowpath_fmt+0x48/0x50 [52174.524053] [<ffffffffa03591cd>] __btrfs_unlink_inode+0x178/0x351 [btrfs] [52174.524053] [<ffffffff8118f5e9>] ? iput+0xb0/0x284 [52174.524053] [<ffffffffa0359fe8>] btrfs_unlink_inode+0x1c/0x3d [btrfs] [52174.524053] [<ffffffffa038631e>] check_item_in_log+0x1fe/0x29b [btrfs] [52174.524053] [<ffffffffa0386522>] replay_dir_deletes+0x167/0x1cf [btrfs] [52174.524053] [<ffffffffa038739e>] fixup_inode_link_count+0x289/0x2aa [btrfs] [52174.524053] [<ffffffffa038748a>] fixup_inode_link_counts+0xcb/0x105 [btrfs] [52174.524053] [<ffffffffa038a5ec>] btrfs_recover_log_trees+0x258/0x32c [btrfs] [52174.524053] [<ffffffffa03885b2>] ? replay_one_extent+0x511/0x511 [btrfs] [52174.524053] [<ffffffffa034f288>] open_ctree+0x1dd4/0x21b9 [btrfs] [52174.524053] [<ffffffffa032b753>] btrfs_mount+0x97e/0xaed [btrfs] [52174.524053] [<ffffffff8108e1b7>] ? trace_hardirqs_on+0xd/0xf [52174.524053] [<ffffffff8117bafa>] mount_fs+0x67/0x131 [52174.524053] [<ffffffff81193003>] vfs_kern_mount+0x6c/0xde [52174.524053] [<ffffffffa032af81>] btrfs_mount+0x1ac/0xaed [btrfs] [52174.524053] [<ffffffff8108e1b7>] ? trace_hardirqs_on+0xd/0xf [52174.524053] [<ffffffff8108c262>] ? lockdep_init_map+0xb9/0x1b3 [52174.524053] [<ffffffff8117bafa>] mount_fs+0x67/0x131 [52174.524053] [<ffffffff81193003>] vfs_kern_mount+0x6c/0xde [52174.524053] [<ffffffff8119590f>] do_mount+0x8a6/0x9e8 [52174.524053] [<ffffffff811358dd>] ? strndup_user+0x3f/0x59 [52174.524053] [<ffffffff81195c65>] SyS_mount+0x77/0x9f [52174.524053] [<ffffffff814935d7>] entry_SYSCALL_64_fastpath+0x12/0x6b [52174.561288] ---[ end trace 6b53049efb1a3ea6 ]--- Fix this by forcing a transaction commit when such cases happen. This means we check in the commit root of the subvolume tree if there was any other inode with the same reference when the inode we are fsync'ing is a new inode (created in the current transaction). Test cases for fstests, covering all the scenarios given above, were submitted upstream for fstests: * fstests: generic test for fsync after renaming directory https://patchwork.kernel.org/patch/8694281/ * fstests: generic test for fsync after renaming file https://patchwork.kernel.org/patch/8694301/ * fstests: add btrfs test for fsync after snapshot deletion https://patchwork.kernel.org/patch/8670671/ Cc: stable@vger.kernel.org Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Chris Mason <clm@fb.com>
2016-04-06Merge branch 'misc-4.6' of ↵Chris Mason
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.6
2016-04-07mailbox: pcc: Don't access an unmapped memory address spaceShanker Donthineni
The acpi_pcc_probe() may end up accessing memory outside of the PCCT table space causing the kernel panic(). Increment the pcct_entry pointer after parsing 'HW-reduced Communications Subspace' to fix the problem. This change also enables the parsing of subtable at index 0. Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org> Acked-by: Ashwin Chaugule <ashwin.chaugule@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-07Merge branch 'drm-fixes-4.6' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie
into drm-fixes Lots of misc bug fixes for radeon and amdgpu and one for ttm. - fix vram info fetching on Fiji and unposted boards - additional vblank fixes from the conversion to drm_vblank_on/off - UVD dGPU suspend and resume fixes - lots of powerplay fixes - fix a fence leak in the pageflip code - ttm fix for platforms where CPU is 32 bit, but physical addresses are >32bits * 'drm-fixes-4.6' of git://people.freedesktop.org/~agd5f/linux: (21 commits) drm/amdgpu: total vram size also reduces pin size drm/amd/powerplay: add uvd/vce dpm enabling flag default. drm/amd/powerplay: fix issue that resume back, dpm can't work on FIJI. drm/amdgpu: save and restore the firwmware cache part when suspend resume drm/amdgpu: save and restore UVD context with suspend and resume drm/ttm: use phys_addr_t for ttm_bus_placement drm/radeon: Only call drm_vblank_on/off between drm_vblank_init/cleanup drm/amdgpu: fence wait old rcu slot drm/amdgpu: fix leaking fence in the pageflip code drm/amdgpu: print vram type rather than just DDR drm/amdgpu/gmc: use proper register for vram type on Fiji drm/amdgpu/gmc: move vram type fetching into sw_init drm/amdgpu: Set vblank_disable_allowed = true drm/radeon: Set vblank_disable_allowed = true drm/amd/powerplay: Need to change boot to performance state in resume. drm/amd/powerplay: add new Fiji function for not setting same ps. drm/amdgpu: check dpm state before pm system fs initialized. drm/amd/powerplay: notify amdgpu whether dpm is enabled or not. drm/amdgpu: Not support disable dpm in powerplay. drm/amdgpu: add an cgs interface to notify amdgpu the dpm state. ...
2016-04-06net: add the AF_KCM entries to family name tablesDexuan Cui
This is for the recent kcm driver, which introduces AF_KCM(41) in b7ac4eb(kcm: Kernel Connection Multiplexor module). Signed-off-by: Dexuan Cui <decui@microsoft.com> Cc: Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06MAINTAINERS: intel-wired-lan list is moderatedJiri Benc
I got the following message: > Your mail to 'Intel-wired-lan' with the subject > > [PATCH net-next] net: intel: remove dead links > > Is being held until the list moderator can review it for approval. > > The reason it is being held: > > Post by non-member to a members-only list Mark the list as moderated. Signed-off-by: Jiri Benc <jbenc@redhat.com> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06lib/test_bpf: Add additional BPF_ADD testsNaveen N. Rao
Some of these tests proved useful with the powerpc eBPF JIT port due to sign-extended 16-bit immediate loads. Though some of these aspects get covered in other tests, it is better to have explicit tests so as to quickly tag the precise problem. Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06lib/test_bpf: Add test to check for result of 32-bit add that overflowsNaveen N. Rao
BPF_ALU32 and BPF_ALU64 tests for adding two 32-bit values that results in 32-bit overflow. Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06lib/test_bpf: Add tests for unsigned BPF_JGTNaveen N. Rao
Unsigned Jump-if-Greater-Than. Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06lib/test_bpf: Fix JMP_JSET testsNaveen N. Rao
JMP_JSET tests incorrectly used BPF_JNE. Fix the same. Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06x86: remove the kernel code/data/bss resources from /proc/iomemLinus Torvalds
Let's see if anybody even notices. I doubt anybody uses this, and it does expose addresses that should be randomized, so let's just remove the code. It's old and traditional, and it used to be cute, but we should have removed this long ago. If it turns out anybody notices and this breaks something, we'll have to revert this, and maybe we'll end up using other approaches instead (using %pK or similar). But removing unnecessary code is always the preferred option. Noted-by: Emrah Demir <ed@abdsec.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-06VSOCK: Detach QP check should filter out non matching QPs.Jorgen Hansen
The check in vmci_transport_peer_detach_cb should only allow a detach when the qp handle of the transport matches the one in the detach message. Testing: Before this change, a detach from a peer on a different socket would cause an active stream socket to register a detach. Reviewed-by: George Zhang <georgezhang@vmware.com> Signed-off-by: Jorgen Hansen <jhansen@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06stmmac: fix adjust link call in case of a switch is attachedGiuseppe CAVALLARO
While initializing the phy, the stmmac driver sets the PHY_IGNORE_INTERRUPT so the PAL won't call the adjust hook that is needed, on some platforms, e.g. STi, to invoke the glue. The patch allows the PAL to poll the stmmac_adjust_link just one time in case of a switch is attached, setting later the PHY_IGNORE_INTERRUPT flag. Moving this kind of logic inside the adjust_link it makes sense to anticipate the check for EEE that will never initialized in this scenario. Reported-by: Gabriel Fernandez <gabriel.fernandez@linaro.org> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Tested-by: Gabriel Fernandez <gabriel.fernandez@linaro.org> Cc: Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06af_packet: tone down the Tx-ring unsupported spew.Dave Jones
Trinity and other fuzzers can hit this WARN on far too easily, resulting in a tainted kernel that hinders automated fuzzing. Replace it with a rate-limited printk. Signed-off-by: Dave Jones <davej@codemonkey.org.uk> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06net_sched: fix a memory leak in tc actionWANG Cong
Fixes: ddf97ccdd7cb ("net_sched: add network namespace support for tc actions") Reported-by: Dmitry Vyukov <dvyukov@google.com> Tested-by: Dmitry Vyukov <dvyukov@google.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06samples/bpf: Enable powerpc supportNaveen N. Rao
Add the necessary definitions for building bpf samples on ppc. Since ppc doesn't store function return address on the stack, modify how PT_REGS_RET() and PT_REGS_FP() work. Also, introduce PT_REGS_IP() to access the instruction pointer. Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David S. Miller <davem@davemloft.net> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06samples/bpf: Use llc in PATH, rather than a hardcoded valueNaveen N. Rao
While at it, remove the generation of .s files and fix some typos in the related comment. Cc: Alexei Starovoitov <ast@fb.com> Cc: David S. Miller <davem@davemloft.net> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06samples/bpf: Fix build breakage with map_perf_test_user.cNaveen N. Rao
Building BPF samples is failing with the below error: samples/bpf/map_perf_test_user.c: In function ‘main’: samples/bpf/map_perf_test_user.c:134:9: error: variable ‘r’ has initializer but incomplete type struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY}; ^ samples/bpf/map_perf_test_user.c:134:21: error: ‘RLIM_INFINITY’ undeclared (first use in this function) struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY}; ^ samples/bpf/map_perf_test_user.c:134:21: note: each undeclared identifier is reported only once for each function it appears in samples/bpf/map_perf_test_user.c:134:9: warning: excess elements in struct initializer [enabled by default] struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY}; ^ samples/bpf/map_perf_test_user.c:134:9: warning: (near initialization for ‘r’) [enabled by default] samples/bpf/map_perf_test_user.c:134:9: warning: excess elements in struct initializer [enabled by default] samples/bpf/map_perf_test_user.c:134:9: warning: (near initialization for ‘r’) [enabled by default] samples/bpf/map_perf_test_user.c:134:16: error: storage size of ‘r’ isn’t known struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY}; ^ samples/bpf/map_perf_test_user.c:139:2: warning: implicit declaration of function ‘setrlimit’ [-Wimplicit-function-declaration] setrlimit(RLIMIT_MEMLOCK, &r); ^ samples/bpf/map_perf_test_user.c:139:12: error: ‘RLIMIT_MEMLOCK’ undeclared (first use in this function) setrlimit(RLIMIT_MEMLOCK, &r); ^ samples/bpf/map_perf_test_user.c:134:16: warning: unused variable ‘r’ [-Wunused-variable] struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY}; ^ make[2]: *** [samples/bpf/map_perf_test_user.o] Error 1 Fix this by including the necessary header file. Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David S. Miller <davem@davemloft.net> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06Revert "bridge: Fix incorrect variable assignment on error path in ↵David S. Miller
br_sysfs_addbr" This reverts commit c862cc9b70526a71d07e7bd86d9b61d1c792cead. Patch lacks a real-name Signed-off-by. Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06Merge tag 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma Pull rdma fixes from Doug Ledford: "I'm back from PTO. These issues cropped up while I was gone and are simple fixes. I'll have more after I've caught up, but I wanted to get these in quick. Two minor fixes for 4.6-rc2: - Fix mlx5 build error when on demand paging is not enabled - Fix possible uninit variable in new i40iw driver" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: i40iw: avoid potential uninitialized variable use IB/mlx5: fix VFs callback function prototypes
2016-04-06cxgb4: Add pci device id for chelsio t520-cr adapterHariprasad Shenai
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-06i40iw: avoid potential uninitialized variable useArnd Bergmann
gcc finds that the i40iw_make_cm_node() function in the recently added i40iw driver uses an uninitilized variable as an index into an array if CONFIG_IPV6 is disabled and the driver uses IPv6 mode: drivers/infiniband/hw/i40iw/i40iw_cm.c: In function 'i40iw_make_cm_node': drivers/infiniband/hw/i40iw/i40iw_cm.c:2206:52: error: 'arpindex' may be used uninitialized in this function [-Werror=maybe-uninitialized] ether_addr_copy(cm_node->rem_mac, iwdev->arp_table[arpindex].mac_addr); As far as I can tell, this code path can not be used because the ipv4 variable is always set with CONFIG_IPV6 is disabled, but it's better to be sure and prevent the undefined behavior, as well as shut up that warning in a proper way. This adds an 'else' clause for the case we get the warning about, causing the function to return an error in a controlled way. To avoid adding extra mess with combined io()/#ifdef clauses, I'm also converting the existing #ifdef into a more readable if(IS_ENABLED()) check. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: f27b4746f378 ("i40iw: add connection management code") Acked-by: Mustafa Ismail <Mustafa.ismail@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-04-06IB/mlx5: fix VFs callback function prototypesArnd Bergmann
The previous patch that added a couple of callback functions put the declarations inside of an #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING, which causes the build to fail if that option is disabled: drivers/infiniband/hw/mlx5/main.c: In function 'mlx5_ib_add': drivers/infiniband/hw/mlx5/main.c:2358:31: error: 'mlx5_ib_get_vf_config' undeclared (first use in this function) This moves the four declarations below the #ifdef section so they are always available. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: eff901d30e6c ("IB/mlx5: Implement callbacks for manipulating VFs") Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-04-06usb: dwc3: keystone: drop dma_mask configurationGrygorii Strashko
The Keystone 2 supports DT-boot only, as result dma_mask will be always configured properly from DT - of_platform_device_create_pdata()->of_dma_configure(). More over, dwc3-keystone.c can be built as module and in this case it's unsafe to assign local variable as dma_mask. Hence, remove dma_mask configuration code. Cc: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-04-06usb: gadget: udc-core: remove manual dma configurationGrygorii Strashko
Since commit 7ace8fc8219e ("usb: gadget: udc: core: Fix argument of dma_map_single for IOMMU") it is not necessary to configure DMA for usb_gadget device manually, because all DMA operation are performed using parent/controller device. Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-04-06usb: dwc3: pci: add ID for one more Intel Broxton platformHeikki Krogerus
BXT-M is a Intel Broxton SoC based platform with unique PCI ID. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-04-06mac80211: fix "warning: ‘target_metric’ may be used uninitialized"Jeff Mahoney
This fixes: net/mac80211/mesh_hwmp.c:603:26: warning: ‘target_metric’ may be used uninitialized in this function target_metric is only consumed when reply = true so no bug exists here, but not all versions of gcc realize it. Initialize to 0 to remove the warning. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-06arm64: KVM: unregister notifiers in hyp mode teardown pathSudeep Holla
Commit 1e947bad0b63 ("arm64: KVM: Skip HYP setup when already running in HYP") re-organized the hyp init code and ended up leaving the CPU hotplug and PM notifier even if hyp mode initialization fails. Since KVM is not yet supported with ACPI, the above mentioned commit breaks CPU hotplug in ACPI boot. This patch fixes teardown_hyp_mode to properly unregister both CPU hotplug and PM notifiers in the teardown path. Fixes: 1e947bad0b63 ("arm64: KVM: Skip HYP setup when already running in HYP") Cc: Christoffer Dall <christoffer.dall@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2016-04-06arm64: KVM: Warn when PARange is less than 40 bitsMarc Zyngier
We always thought that 40bits of PA range would be the minimum people would actually build. Anything less is terrifyingly small. Turns out that we were both right and wrong. Nobody has ever built such a system, but the ARM Foundation Model has a PARange set to 36bits. Just because we can. Oh well. Now, the KVM API explicitely says that we offer a 40bit PA space to the VM, so we shouldn't run KVM on the Foundation Model at all. That being said, this patch offers a less agressive alternative, and loudly warns about the configuration being unsupported. You'll still be able to run VMs (at your own risks, though). This is just a workaround until we have a proper userspace API where we report the PARange to userspace. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2016-04-06KVM: arm/arm64: Handle forward time correction gracefullyMarc Zyngier
On a host that runs NTP, corrections can have a direct impact on the background timer that we program on the behalf of a vcpu. In particular, NTP performing a forward correction will result in a timer expiring sooner than expected from a guest point of view. Not a big deal, we kick the vcpu anyway. But on wake-up, the vcpu thread is going to perform a check to find out whether or not it should block. And at that point, the timer check is going to say "timer has not expired yet, go back to sleep". This results in the timer event being lost forever. There are multiple ways to handle this. One would be record that the timer has expired and let kvm_cpu_has_pending_timer return true in that case, but that would be fairly invasive. Another is to check for the "short sleep" condition in the hrtimer callback, and restart the timer for the remaining time when the condition is detected. This patch implements the latter, with a bit of refactoring in order to avoid too much code duplication. Cc: <stable@vger.kernel.org> Reported-by: Alexander Graf <agraf@suse.de> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2016-04-06Merge branch 'linux-4.6' of git://github.com/skeggsb/linux into drm-fixesDave Airlie
Just a single fix to prevent GM20B systems hanging at boot. * 'linux-4.6' of git://github.com/skeggsb/linux: drm/nouveau/tegra: acquire and enable reference clock if needed
2016-04-06drm/nouveau/tegra: acquire and enable reference clock if neededAlexandre Courbot
GM20B requires an extra clock compared to GK20A. Add that information into the platform data and acquire and enable this clock if necessary. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-04-06Merge branch 'for-upstream/hdlcd' of git://linux-arm.org/linux-ld into drm-fixesDave Airlie
arm hdlcd fix. * 'for-upstream/hdlcd' of git://linux-arm.org/linux-ld: drm: ARM HDLCD - fix an error code drm: ARM HDLCD - get rid of devm_clk_put()
2016-04-06Merge tag 'imx-drm-next-2016-04-01' of ↵Dave Airlie
git://git.pengutronix.de/git/pza/linux into drm-fixes imx-drm: stricter plane parameter checking, dw_hdmi-imx and dmfc fixes - Check whether plane parameters comply with IPU IDMAC limitations and fix planar YUV 4:2:0 U/V offsets and stride - Cleanup encoder in dw_hdmi-imx bind error path and remove a superfluous platform_set_drvdata in dw_hdmi-imx - DMFC setup fixes: lock the ipu_dmfc_init_channel function against concurrent use, rename it to ipu_dmfc_config_wait4eot, and call it after the FIFO size has been determined. * tag 'imx-drm-next-2016-04-01' of git://git.pengutronix.de/git/pza/linux: drm/imx: Don't set a gamma table size drm/imx: ipuv3-plane: Configure DMFC wait4eot bit after slots are determined gpu: ipu-v3: ipu-dmfc: Rename ipu_dmfc_init_channel to ipu_dmfc_config_wait4eot gpu: ipu-v3: ipu-dmfc: Make function ipu_dmfc_init_channel() return void gpu: ipu-v3: ipu-dmfc: Protect function ipu_dmfc_init_channel() with mutex drm/imx: dw_hdmi: Don't call platform_set_drvdata() drm/imx: dw_hdmi: Call drm_encoder_cleanup() in error path drm/imx: ipuv3-plane: fix planar YUV 4:2:0 support drm/imx: ipuv3-plane: Add more thorough checks for plane parameter limitations gpu: ipu-cpmem: modify ipu_cpmem_set_yuv_planar_full for better control
2016-04-05ip6_tunnel: set rtnl_link_ops before calling register_netdeviceThadeu Lima de Souza Cascardo
When creating an ip6tnl tunnel with ip tunnel, rtnl_link_ops is not set before ip6_tnl_create2 is called. When register_netdevice is called, there is no linkinfo attribute in the NEWLINK message because of that. Setting rtnl_link_ops before calling register_netdevice fixes that. Fixes: 0b112457229d ("ip6tnl: add support of link creation via rtnl") Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@redhat.com> Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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