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2018-04-11Merge tag 'pm-4.17-rc1-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more power management updates from Rafael Wysocki: "These include one big-ticket item which is the rework of the idle loop in order to prevent CPUs from spending too much time in shallow idle states. It reduces idle power on some systems by 10% or more and may improve performance of workloads in which the idle loop overhead matters. This has been in the works for several weeks and it has been tested and reviewed quite thoroughly. Also included are changes that finalize the cpufreq cleanup moving frequency table validation from drivers to the core, a few fixes and cleanups of cpufreq drivers, a cpuidle documentation update and a PM QoS core update to mark the expected switch fall-throughs in it. Specifics: - Rework the idle loop in order to prevent CPUs from spending too much time in shallow idle states by making it stop the scheduler tick before putting the CPU into an idle state only if the idle duration predicted by the idle governor is long enough. That required the code to be reordered to invoke the idle governor before stopping the tick, among other things (Rafael Wysocki, Frederic Weisbecker, Arnd Bergmann). - Add the missing description of the residency sysfs attribute to the cpuidle documentation (Prashanth Prakash). - Finalize the cpufreq cleanup moving frequency table validation from drivers to the core (Viresh Kumar). - Fix a clock leak regression in the armada-37xx cpufreq driver (Gregory Clement). - Fix the initialization of the CPU performance data structures for shared policies in the CPPC cpufreq driver (Shunyong Yang). - Clean up the ti-cpufreq, intel_pstate and CPPC cpufreq drivers a bit (Viresh Kumar, Rafael Wysocki). - Mark the expected switch fall-throughs in the PM QoS core (Gustavo Silva)" * tag 'pm-4.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (23 commits) tick-sched: avoid a maybe-uninitialized warning cpufreq: Drop cpufreq_table_validate_and_show() cpufreq: SCMI: Don't validate the frequency table twice cpufreq: CPPC: Initialize shared perf capabilities of CPUs cpufreq: armada-37xx: Fix clock leak cpufreq: CPPC: Don't set transition_latency cpufreq: ti-cpufreq: Use builtin_platform_driver() cpufreq: intel_pstate: Do not include debugfs.h PM / QoS: mark expected switch fall-throughs cpuidle: Add definition of residency to sysfs documentation time: hrtimer: Use timerqueue_iterate_next() to get to the next timer nohz: Avoid duplication of code related to got_idle_tick nohz: Gather tick_sched booleans under a common flag field cpuidle: menu: Avoid selecting shallow states with stopped tick cpuidle: menu: Refine idle state selection for running tick sched: idle: Select idle state before stopping the tick time: hrtimer: Introduce hrtimer_next_event_without() time: tick-sched: Split tick_nohz_stop_sched_tick() cpuidle: Return nohz hint from cpuidle_select() jiffies: Introduce USER_TICK_USEC and redefine TICK_USEC ...
2018-04-11Merge tag 'tags/upstream-4.17-rc1' of git://git.infradead.org/linux-ubifsLinus Torvalds
Pull UBI and UBIFS updates from Richard Weinberger: "Minor bug fixes and improvements" * tag 'tags/upstream-4.17-rc1' of git://git.infradead.org/linux-ubifs: ubi: Reject MLC NAND ubifs: Remove useless parameter of lpt_heap_replace ubifs: Constify struct ubifs_lprops in scan_for_leb_for_idx ubifs: remove unnecessary assignment ubi: Fix error for write access ubi: fastmap: Don't flush fastmap work on detach ubifs: Check ubifs_wbuf_sync() return code
2018-04-11i2c: add param sanity check to i2c_transfer()Ard Biesheuvel
The API docs describe i2c_transfer() as taking a pointer to an array of i2c_msg containing at least 1 entry, but leaves it to the individual drivers to sanity check the msgs and num parameters. Let's do this in core code instead. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> [wsa: changed '<= 0' to '< 1'] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-04-11i2c: i801: Restore configuration at shutdownJean Delvare
On some systems, the BIOS expects certain SMBus register values to match the hardware defaults. Restore these configuration registers at shutdown time to avoid confusing the BIOS. This avoids hard-locking such systems upon reboot. Signed-off-by: Jean Delvare <jdelvare@suse.de> Tested-by: Jason Andryuk <jandryuk@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@vger.kernel.org
2018-04-11i2c: i801: Save register SMBSLVCMD value only onceJean Delvare
Saving the original value of register SMBSLVCMD in i801_enable_host_notify() doesn't work, because this function is called not only at probe time but also at resume time. Do it in i801_probe() instead, so that the saved value is not overwritten at resume time. Signed-off-by: Jean Delvare <jdelvare@suse.de> Fixes: 22e94bd6779e ("i2c: i801: store and restore the SLVCMD register at load and unload") Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Tested-by: Jason Andryuk <jandryuk@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@vger.kernel.org # v4.10+
2018-04-11tun: send netlink notification when the device is modifiedSabrina Dubroca
I added dumping of link information about tun devices over netlink in commit 1ec010e70593 ("tun: export flags, uid, gid, queue information over netlink"), but didn't add the missing netlink notifications when the device's exported properties change. This patch adds notifications when owner/group or flags are modified, when queues are attached/detached, and when a tun fd is closed. Reported-by: Thomas Haller <thaller@redhat.com> Fixes: 1ec010e70593 ("tun: export flags, uid, gid, queue information over netlink") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11tun: set the flags before registering the netdeviceSabrina Dubroca
Otherwise, register_netdevice advertises the creation of the device with the default flags, instead of what the user requested. Reported-by: Thomas Haller <thaller@redhat.com> Fixes: 1ec010e70593 ("tun: export flags, uid, gid, queue information over netlink") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11lan78xx: Don't reset the interface on openPhil Elwell
Commit 92571a1aae40 ("lan78xx: Connect phy early") moves the PHY initialisation into lan78xx_probe, but lan78xx_open subsequently calls lan78xx_reset. As well as forcing a second round of link negotiation, this reset frequently prevents the phy interrupt from being generated (even though the link is up), rendering the interface unusable. Fix this issue by removing the lan78xx_reset call from lan78xx_open. Fixes: 92571a1aae40 ("lan78xx: Connect phy early") Signed-off-by: Phil Elwell <phil@raspberrypi.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11bnxt_en: Fix NULL pointer dereference at bnxt_free_irq().Michael Chan
When open fails during ethtool -L ring change, for example, the driver may crash at bnxt_free_irq() because bp->bnapi is NULL. If we fail to allocate all the new rings, bnxt_open_nic() will free all the memory including bp->bnapi. Subsequent call to bnxt_close_nic() will try to dereference bp->bnapi in bnxt_free_irq(). Fix it by checking for !bp->bnapi in bnxt_free_irq(). Fixes: e5811b8c09df ("bnxt_en: Add IRQ remapping logic.") Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11bnxt_en: Need to include RDMA rings in bnxt_check_rings().Michael Chan
With recent changes to reserve both L2 and RDMA rings, we need to include the RDMA rings in bnxt_check_rings(). Otherwise we will under-estimate the rings we need during ethtool -L and may lead to failure. Fixes: fbcfc8e46741 ("bnxt_en: Reserve completion rings and MSIX for bnxt_re RDMA driver.") Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11bnxt_en: Support max-mtu with VF-repsSriharsha Basavapatna
While a VF is configured with a bigger mtu (> 1500), any packets that are punted to the VF-rep (slow-path) get dropped by OVS kernel-datapath with the following message: "dropped over-mtu packet". Fix this by returning the max-mtu value for a VF-rep derived from its corresponding VF. VF-rep's mtu can be changed using 'ip' command as shown in this example: $ ip link set bnxt0_pf0vf0 mtu 9000 Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11bnxt_en: Ignore src port field in decap filter nodesSriharsha Basavapatna
The driver currently uses src port field (along with other fields) in the decap tunnel key, while looking up and adding tunnel nodes. This leads to redundant cfa_decap_filter_alloc() requests to the FW and flow-miss in the flow engine. Fix this by ignoring the src port field in decap tunnel nodes. Fixes: f484f6782e01 ("bnxt_en: add hwrm FW cmds for cfa_encap_record and decap_filter") Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11bnxt_en: do not allow wildcard matches for L2 flowsAndy Gospodarek
Before this patch the following commands would succeed as far as the user was concerned: $ tc qdisc add dev p1p1 ingress $ tc filter add dev p1p1 parent ffff: protocol all \ flower skip_sw action drop $ tc filter add dev p1p1 parent ffff: protocol ipv4 \ flower skip_sw src_mac 00:02:00:00:00:01/44 action drop The current flow offload infrastructure used does not support wildcard matching for ethernet headers, so do not allow the second or third commands to succeed. If a user wants to drop traffic on that interface the protocol and MAC addresses need to be specified explicitly: $ tc qdisc add dev p1p1 ingress $ tc filter add dev p1p1 parent ffff: protocol arp \ flower skip_sw action drop $ tc filter add dev p1p1 parent ffff: protocol ipv4 \ flower skip_sw action drop ... $ tc filter add dev p1p1 parent ffff: protocol ipv4 \ flower skip_sw src_mac 00:02:00:00:00:01 action drop $ tc filter add dev p1p1 parent ffff: protocol ipv4 \ flower skip_sw src_mac 00:02:00:00:00:02 action drop ... There are also checks for VLAN parameters in this patch as other callers may wildcard those parameters even if tc does not. Using different flow infrastructure could allow this to work in the future for L2 flows, but for now it does not. Fixes: 2ae7408fedfe ("bnxt_en: bnxt: add TC flower filter offload support") Signed-off-by: Andy Gospodarek <gospo@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11bnxt_en: Fix ethtool -x crash when device is down.Michael Chan
Fix ethtool .get_rxfh() crash by checking for valid indirection table address before copying the data. Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11drm/amd/display: fix brightness level after resume from suspendRoman Li
Adding missing call to cache current backlight values. Otherwise the brightness resets to default value on resume. Signed-off-by: Roman Li <Roman.Li@amd.com> Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11drm/amd/display: HDMI has no sound after Panel power off/onCharlene Liu
Signed-off-by: Charlene Liu <charlene.liu@amd.com> Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Cc: stable@vger.kernel.org Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11drm/amdgpu: add MP1 and THM hw ip base reg offsetEvan Quan
Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Rex Zhu <Rex.Zhu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11drm/amdgpu: fix null pointer panic with direct fw loading on gpu resetHuang Rui
When system uses fw direct loading, then psp context structure won't be initiliazed. And it is also unable to execute mode reset. [ 434.601474] amdgpu 0000:0c:00.0: GPU reset begin! [ 434.694326] amdgpu 0000:0c:00.0: GPU reset [ 434.743152] BUG: unable to handle kernel NULL pointer dereference at 0000000000000058 [ 434.838474] IP: psp_gpu_reset+0xc/0x30 [amdgpu] [ 434.893532] PGD 406ed9067 [ 434.893533] P4D 406ed9067 [ 434.926376] PUD 400b46067 [ 434.959217] PMD 0 [ 435.033379] Oops: 0000 [#1] SMP [ 435.072573] Modules linked in: amdgpu(OE) chash(OE) gpu_sched(OE) ttm(OE) drm_kms_helper(OE) drm(OE) fb_sys_fops syscopyarea sysfillrect sysimgblt rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs lockd grace fscache snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm edac_mce_amd snd_seq_midi snd_seq_midi_event kvm_amd snd_rawmidi kvm irqbypass crct10dif_pclmul crc32_pclmul snd_seq ghash_clmulni_intel snd_seq_device pcbc snd_timer eeepc_wmi aesni_intel snd asus_wmi aes_x86_64 sparse_keymap crypto_simd glue_helper joydev soundcore wmi_bmof cryptd video i2c_piix4 shpchp 8250_dw i2c_designware_platform mac_hid i2c_designware_core sunrpc parport_pc ppdev lp parport autofs4 hid_generic igb usbhid dca ptp mxm_wmi pps_core ahci hid i2c_algo_bit [ 435.931754] libahci wmi Signed-off-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11drm/radeon: add PX quirk for Asus K73TKNico Sneck
With this the dGPU turns on correctly. Signed-off-by: Nico Sneck <nicosneck@hotmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2018-04-11Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge more updates from Andrew Morton: - almost all of the rest of MM - kasan updates - lots of procfs work - misc things - lib/ updates - checkpatch - rapidio - ipc/shm updates - the start of willy's XArray conversion * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (140 commits) page cache: use xa_lock xarray: add the xa_lock to the radix_tree_root fscache: use appropriate radix tree accessors export __set_page_dirty unicore32: turn flush_dcache_mmap_lock into a no-op arm64: turn flush_dcache_mmap_lock into a no-op mac80211_hwsim: use DEFINE_IDA radix tree: use GFP_ZONEMASK bits of gfp_t for flags linux/const.h: refactor _BITUL and _BITULL a bit linux/const.h: move UL() macro to include/linux/const.h linux/const.h: prefix include guard of uapi/linux/const.h with _UAPI xen, mm: allow deferred page initialization for xen pv domains elf: enforce MAP_FIXED on overlaying elf segments fs, elf: drop MAP_FIXED usage from elf_map mm: introduce MAP_FIXED_NOREPLACE MAINTAINERS: update bouncing aacraid@adaptec.com addresses fs/dcache.c: add cond_resched() in shrink_dentry_list() include/linux/kfifo.h: fix comment ipc/shm.c: shm_split(): remove unneeded test for NULL shm_file_data.vm_ops kernel/sysctl.c: add kdoc comments to do_proc_do{u}intvec_minmax_conv_param ...
2018-04-11page cache: use xa_lockMatthew Wilcox
Remove the address_space ->tree_lock and use the xa_lock newly added to the radix_tree_root. Rename the address_space ->page_tree to ->i_pages, since we don't really care that it's a tree. [willy@infradead.org: fix nds32, fs/dax.c] Link: http://lkml.kernel.org/r/20180406145415.GB20605@bombadil.infradead.orgLink: http://lkml.kernel.org/r/20180313132639.17387-9-willy@infradead.org Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Acked-by: Jeff Layton <jlayton@redhat.com> Cc: Darrick J. Wong <darrick.wong@oracle.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11mac80211_hwsim: use DEFINE_IDAMatthew Wilcox
This is preferred to opencoding an IDA_INIT. Link: http://lkml.kernel.org/r/20180313132639.17387-2-willy@infradead.org Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11rapidio: use a reference count for struct mport_dma_reqIoan Nicu
Once the dma request is passed to the DMA engine, the DMA subsystem would hold a pointer to this structure and could call the completion callback after do_dma_request() has timed out. The current code deals with this by putting timed out SYNC requests to a pending list and freeing them later, when the mport cdev device is released. This still does not guarantee that the DMA subsystem is really done with those transfers, so in theory dma_xfer_callback/dma_req_free could be called after mport_cdev_release_dma and could potentially access already freed memory. This patch simplifies the current handling by using a kref in the mport dma request structure, so that it gets freed only when nobody uses it anymore. This also simplifies the code a bit, as FAF transfers are now handled in the same way as SYNC and ASYNC transfers. There is no need anymore for the pending list and for the dma workqueue which was used in case of FAF transfers, so we remove them both. Link: http://lkml.kernel.org/r/20180405203342.GA16191@nokia.com Signed-off-by: Ioan Nicu <ioan.nicu.ext@nokia.com> Acked-by: Alexandre Bounine <alex.bou9@gmail.com> Cc: Barry Wood <barry.wood@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Logan Gunthorpe <logang@deltatee.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Frank Kunz <frank.kunz@nokia.com> Cc: Alexander Sverdlin <alexander.sverdlin@nokia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11drivers/rapidio/rio-scan.c: fix typo in commentVasyl Gomonovych
Fix typo in the words 'receiver', 'specified', 'during' Link: http://lkml.kernel.org/r/20180321211035.8904-1-gomonovych@gmail.com Signed-off-by: Vasyl Gomonovych <gomonovych@gmail.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Alexandre Bounine <alexandre.bounine@idt.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11proc: add seq_put_decimal_ull_width to speed up /proc/pid/smapsAndrei Vagin
seq_put_decimal_ull_w(m, str, val, width) prints a decimal number with a specified minimal field width. It is equivalent of seq_printf(m, "%s%*d", str, width, val), but it works much faster. == test_smaps.py num = 0 with open("/proc/1/smaps") as f: for x in xrange(10000): data = f.read() f.seek(0, 0) == == Before patch == $ time python test_smaps.py real 0m4.593s user 0m0.398s sys 0m4.158s == After patch == $ time python test_smaps.py real 0m3.828s user 0m0.413s sys 0m3.408s $ perf -g record python test_smaps.py == Before patch == - 79.01% 3.36% python [kernel.kallsyms] [k] show_smap.isra.33 - 75.65% show_smap.isra.33 + 48.85% seq_printf + 15.75% __walk_page_range + 9.70% show_map_vma.isra.23 0.61% seq_puts == After patch == - 75.51% 4.62% python [kernel.kallsyms] [k] show_smap.isra.33 - 70.88% show_smap.isra.33 + 24.82% seq_put_decimal_ull_w + 19.78% __walk_page_range + 12.74% seq_printf + 11.08% show_map_vma.isra.23 + 1.68% seq_puts [akpm@linux-foundation.org: fix drivers/of/unittest.c build] Link: http://lkml.kernel.org/r/20180212074931.7227-1-avagin@openvz.org Signed-off-by: Andrei Vagin <avagin@openvz.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11mm: check __highest_present_section_nr directly in memory_dev_init()Wei Yang
__highest_present_section_nr is a more strict boundary than NR_MEM_SECTIONS. So checking __highest_present_section_nr directly is enough. Link: http://lkml.kernel.org/r/20180330032044.21647-1-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Michal Hocko <mhocko@suse.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11sr: get/drop reference to device in revalidate and check_eventsJens Axboe
We can't just use scsi_cd() to get the scsi_cd structure, we have to grab a live reference to the device. For both callbacks, we're not inside an open where we already hold a reference to the device. This fixes device removal/addition under concurrent device access, which otherwise could result in the below oops. NULL pointer dereference at 0000000000000010 PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP Modules linked in: sr 12:0:0:0: [sr2] scsi-1 drive scsi_debug crc_t10dif crct10dif_generic crct10dif_common nvme nvme_core sb_edac xl sr 12:0:0:0: Attached scsi CD-ROM sr2 sr_mod cdrom btrfs xor zstd_decompress zstd_compress xxhash lzo_compress zlib_defc sr 12:0:0:0: Attached scsi generic sg7 type 5 igb ahci libahci i2c_algo_bit libata dca [last unloaded: crc_t10dif] CPU: 43 PID: 4629 Comm: systemd-udevd Not tainted 4.16.0+ #650 Hardware name: Dell Inc. PowerEdge T630/0NT78X, BIOS 2.3.4 11/09/2016 RIP: 0010:sr_block_revalidate_disk+0x23/0x190 [sr_mod] RSP: 0018:ffff883ff357bb58 EFLAGS: 00010292 RAX: ffffffffa00b07d0 RBX: ffff883ff3058000 RCX: ffff883ff357bb66 RDX: 0000000000000003 RSI: 0000000000007530 RDI: ffff881fea631000 RBP: 0000000000000000 R08: ffff881fe4d38400 R09: 0000000000000000 R10: 0000000000000000 R11: 00000000000001b6 R12: 000000000800005d R13: 000000000800005d R14: ffff883ffd9b3790 R15: 0000000000000000 FS: 00007f7dc8e6d8c0(0000) GS:ffff883fff340000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000010 CR3: 0000003ffda98005 CR4: 00000000003606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ? __invalidate_device+0x48/0x60 check_disk_change+0x4c/0x60 sr_block_open+0x16/0xd0 [sr_mod] __blkdev_get+0xb9/0x450 ? iget5_locked+0x1c0/0x1e0 blkdev_get+0x11e/0x320 ? bdget+0x11d/0x150 ? _raw_spin_unlock+0xa/0x20 ? bd_acquire+0xc0/0xc0 do_dentry_open+0x1b0/0x320 ? inode_permission+0x24/0xc0 path_openat+0x4e6/0x1420 ? cpumask_any_but+0x1f/0x40 ? flush_tlb_mm_range+0xa0/0x120 do_filp_open+0x8c/0xf0 ? __seccomp_filter+0x28/0x230 ? _raw_spin_unlock+0xa/0x20 ? __handle_mm_fault+0x7d6/0x9b0 ? list_lru_add+0xa8/0xc0 ? _raw_spin_unlock+0xa/0x20 ? __alloc_fd+0xaf/0x160 ? do_sys_open+0x1a6/0x230 do_sys_open+0x1a6/0x230 do_syscall_64+0x5a/0x100 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 Reviewed-by: Lee Duncan <lduncan@suse.com> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-04-11vhost: return bool from *_access_ok() functionsStefan Hajnoczi
Currently vhost *_access_ok() functions return int. This is error-prone because there are two popular conventions: 1. 0 means failure, 1 means success 2. -errno means failure, 0 means success Although vhost mostly uses #1, it does not do so consistently. umem_access_ok() uses #2. This patch changes the return type from int to bool so that false means failure and true means success. This eliminates a potential source of errors. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11vhost: fix vhost_vq_access_ok() log checkStefan Hajnoczi
Commit d65026c6c62e7d9616c8ceb5a53b68bcdc050525 ("vhost: validate log when IOTLB is enabled") introduced a regression. The logic was originally: if (vq->iotlb) return 1; return A && B; After the patch the short-circuit logic for A was inverted: if (A || vq->iotlb) return A; return B; This patch fixes the regression by rewriting the checks in the obvious way, no longer returning A when vq->iotlb is non-NULL (which is hard to understand). Reported-by: syzbot+65a84dde0214b0387ccd@syzkaller.appspotmail.com Cc: Jason Wang <jasowang@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11vhost: Fix vhost_copy_to_user()Eric Auger
vhost_copy_to_user is used to copy vring used elements to userspace. We should use VHOST_ADDR_USED instead of VHOST_ADDR_DESC. Fixes: f88949138058 ("vhost: introduce O(1) vq metadata cache") Signed-off-by: Eric Auger <eric.auger@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11net: aquantia: oops when shutdown on already stopped deviceIgor Russkikh
In case netdev is closed at the moment of pci shutdown, aq_nic_stop gets called second time. napi_disable in that case hangs indefinitely. In other case, if device was never opened at all, we get oops because of null pointer access. We should invoke aq_nic_stop conditionally, only if device is running at the moment of shutdown. Reported-by: David Arcari <darcari@redhat.com> Fixes: 90869ddfefeb ("net: aquantia: Implement pci shutdown callback") Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11net: aquantia: Regression on reset with 1.x firmwareIgor Russkikh
On ASUS XG-C100C with 1.5.44 firmware a special mode called "dirty wake" is active. With this mode when motherboard gets powered (but no poweron happens yet), NIC automatically enables powersave link and watches for WOL packet. This normally allows to powerup the PC after AC power failures. Not all motherboards or bios settings gives power to PCI slots, so this mode is not enabled on all the hardware. 4.16 linux driver introduced full hardware reset sequence This is required since before that we had no NIC hardware reset implemented and there were side effects of "not clean start". But this full reset is incompatible with "dirty wake" WOL feature it keeps the PHY link in a special mode forever. As a consequence, driver sees no link and no traffic. To fix this we forcibly change FW state to idle state before doing the full reset. This makes FW to restore link state. Fixes: c8c82eb net: aquantia: Introduce global AQC hardware reset sequence Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11cdc_ether: flag the Cinterion AHS8 modem by gemalto as WWANBassem Boubaker
The Cinterion AHS8 is a 3G device with one embedded WWAN interface using cdc_ether as a driver. The modem is controlled via AT commands through the exposed TTYs. AT+CGDCONT write command can be used to activate or deactivate a WWAN connection for a PDP context defined with the same command. UE supports one WWAN adapter. Signed-off-by: Bassem Boubaker <bassem.boubaker@actia.fr> Acked-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11slip: Check if rstate is initialized before uncompressingTejaswi Tanikella
On receiving a packet the state index points to the rstate which must be used to fill up IP and TCP headers. But if the state index points to a rstate which is unitialized, i.e. filled with zeros, it gets stuck in an infinite loop inside ip_fast_csum trying to compute the ip checsum of a header with zero length. 89.666953: <2> [<ffffff9dd3e94d38>] slhc_uncompress+0x464/0x468 89.666965: <2> [<ffffff9dd3e87d88>] ppp_receive_nonmp_frame+0x3b4/0x65c 89.666978: <2> [<ffffff9dd3e89dd4>] ppp_receive_frame+0x64/0x7e0 89.666991: <2> [<ffffff9dd3e8a708>] ppp_input+0x104/0x198 89.667005: <2> [<ffffff9dd3e93868>] pppopns_recv_core+0x238/0x370 89.667027: <2> [<ffffff9dd4428fc8>] __sk_receive_skb+0xdc/0x250 89.667040: <2> [<ffffff9dd3e939e4>] pppopns_recv+0x44/0x60 89.667053: <2> [<ffffff9dd4426848>] __sock_queue_rcv_skb+0x16c/0x24c 89.667065: <2> [<ffffff9dd4426954>] sock_queue_rcv_skb+0x2c/0x38 89.667085: <2> [<ffffff9dd44f7358>] raw_rcv+0x124/0x154 89.667098: <2> [<ffffff9dd44f7568>] raw_local_deliver+0x1e0/0x22c 89.667117: <2> [<ffffff9dd44c8ba0>] ip_local_deliver_finish+0x70/0x24c 89.667131: <2> [<ffffff9dd44c92f4>] ip_local_deliver+0x100/0x10c ./scripts/faddr2line vmlinux slhc_uncompress+0x464/0x468 output: ip_fast_csum at arch/arm64/include/asm/checksum.h:40 (inlined by) slhc_uncompress at drivers/net/slip/slhc.c:615 Adding a variable to indicate if the current rstate is initialized. If such a packet arrives, move to toss state. Signed-off-by: Tejaswi Tanikella <tejaswit@codeaurora.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11lan78xx: Avoid spurious kevent 4 "error"Phil Elwell
lan78xx_defer_event generates an error message whenever the work item is already scheduled. lan78xx_open defers three events - EVENT_STAT_UPDATE, EVENT_DEV_OPEN and EVENT_LINK_RESET. Being aware of the likelihood (or certainty) of an error message, the DEV_OPEN event is added to the set of pending events directly, relying on the subsequent deferral of the EVENT_LINK_RESET call to schedule the work. Take the same precaution with EVENT_STAT_UPDATE to avoid a totally unnecessary error message. Signed-off-by: Phil Elwell <phil@raspberrypi.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11lan78xx: Correctly indicate invalid OTPPhil Elwell
lan78xx_read_otp tries to return -EINVAL in the event of invalid OTP content, but the value gets overwritten before it is returned and the read goes ahead anyway. Make the read conditional as it should be and preserve the error code. Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver") Signed-off-by: Phil Elwell <phil@raspberrypi.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-11PCI: Remove messages about reassigning resourcesDesnes A. Nunes do Rosario
When reassigning device resources to increase their alignment, e.g., because of a "pci=resource_alignment=" kernel parameter or because the platform aligns resources to its page size, we previously emitted messages like this: pci 0000:00:00.0: Disabling memory decoding and releasing memory resources pci 0000:00:00.0: disabling bridge mem windows These messages don't convey any useful information, so remove them. Fixes: 38274637699 ("powerpc/powernv: Override pcibios_default_alignment() to force PCI devices to be page aligned") Signed-off-by: Desnes A. Nunes do Rosario <desnesn@linux.vnet.ibm.com> [bhelgaas: changelog] Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>
2018-04-11Merge branches 'pm-cpuidle' and 'pm-qos'Rafael J. Wysocki
* pm-cpuidle: tick-sched: avoid a maybe-uninitialized warning cpuidle: Add definition of residency to sysfs documentation time: hrtimer: Use timerqueue_iterate_next() to get to the next timer nohz: Avoid duplication of code related to got_idle_tick nohz: Gather tick_sched booleans under a common flag field cpuidle: menu: Avoid selecting shallow states with stopped tick cpuidle: menu: Refine idle state selection for running tick sched: idle: Select idle state before stopping the tick time: hrtimer: Introduce hrtimer_next_event_without() time: tick-sched: Split tick_nohz_stop_sched_tick() cpuidle: Return nohz hint from cpuidle_select() jiffies: Introduce USER_TICK_USEC and redefine TICK_USEC sched: idle: Do not stop the tick before cpuidle_idle_call() sched: idle: Do not stop the tick upfront in the idle loop time: tick-sched: Reorganize idle tick management code * pm-qos: PM / QoS: mark expected switch fall-throughs
2018-04-11s390/zcrypt: Support up to 256 crypto adapters.Harald Freudenberger
There was an artificial restriction on the card/adapter id to only 6 bits but all the AP commands do support adapter ids with 8 bit. This patch removes this restriction to 64 adapters and now up to 256 adapter can get addressed. Some of the ioctl calls work on the max number of cards possible (which was 64). These ioctls are now deprecated but still supported. All the defines, structs and ioctl interface declarations have been kept for compabibility. There are now new ioctls (and defines for these) with an additional '2' appended which provide the extended versions with 256 cards supported. Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2018-04-10Merge remote-tracking branch ↵Benson Leung
'origin/ib-chrome-platform-cros-ec-sysfs-debugfs-for-v4.17' into working-branch-for-4.17 Merging Enric's cros-ec sysfs and debugfs fixes from immutable branch. Signed-off-by: Benson Leung <bleung@chromium.org>
2018-04-10platform/chrome: mfd/cros_ec_dev: Add sysfs entry to set keyboard wake lid angleGwendal Grignou
This adds a sysfs attribute (/sys/class/chromeos/cros_ec/kb_wake_angle) used to set and get the keyboard wake lid angle. This attribute is present only if 2 accelerometers are controlled by the EC. This patch also moves the cros_ec features check before the device is added so the features map obtained from the EC is ready on time. Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Benson Leung <bleung@chromium.org>
2018-04-10platform/chrome: cros_ec_debugfs: Add PD port info to debugfsShawn Nematbakhsh
Add info useful for debugging USB-PD port state. Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Benson Leung <bleung@chromium.org>
2018-04-10platform/chrome: cros_ec_debugfs: Use octal permissions '0444'Enric Balletbo i Serra
Fixed the following checkpatch warning: WARNING: Symbolic permissions 'S_IRUGO' are not preferred. Consider using octal permissions '0444'. Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Benson Leung <bleung@chromium.org>
2018-04-10platform/chrome: cros_ec_sysfs: use permission-specific DEVICE_ATTR variantsEnric Balletbo i Serra
Use DEVICE_ATTR variants for read/write attributes. This simplifies the source code, improves readbility, and reduces the chance of inconsistencies. Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Benson Leung <bleung@chromium.org>
2018-04-10platform/chrome: cros_ec_sysfs: introduce to_cros_ec_dev define.Enric Balletbo i Serra
Add a define to get the cros_ec_dev from device and use it. Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Benson Leung <bleung@chromium.org>
2018-04-10platform/chrome: cros_ec_sysfs: Modify error handlingGwendal Grignou
When accessing a sysfs attribute, if the EC command fails, -EPROTO is now returned instead of an error message as it is unlikely an app is parsing the error message to do something meaningful. Also, this patch makes use of cros_ec_cmd_xfer_status() instead of cros_ec_cmd_xfer() so an error message is printed in the syslog. Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Benson Leung <bleung@chromium.org>
2018-04-10PCI: Mark Broadcom HT1100 and HT2000 Root Port Extended Tags as brokenSinan Kaya
Per PCIe r3.1, sec 2.2.6.2 and 7.8.4, a Requester may not use 8-bit Tags unless its Extended Tag Field Enable is set, but all Receivers/Completers must handle 8-bit Tags correctly regardless of their Extended Tag Field Enable. Some devices do not handle 8-bit Tags as Completers, so add a quirk for them. If we find such a device, we disable Extended Tags for the entire hierarchy to make peer-to-peer DMA possible. The Broadcom HT1100/HT2000/HT2100 seems to have issues with handling 8-bit tags. Mark it as broken. This fixes Xorg hangs and unresponsive keyboards with errors like this: radeon 0000:06:00.0: GPU lockup (current fence id 0x000000000000000e last fence id 0x0000000000000 [drm:r600_ring_test [radeon]] *ERROR* radeon: ring 0 test failed (scratch(0x8504)=0xCAFEDEAD) [drm:r600_resume [radeon]] *ERROR* r600 startup failed on resume Fixes: 60db3a4d8cc9 ("PCI: Enable PCIe Extended Tags if supported") Link: https://bugzilla.kernel.org/show_bug.cgi?id=196197 Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Bjorn Helgaas <helgaas@kernel.org> CC: stable@vger.kernel.org # v4.11: 62ce94a7a5a5 PCI: Mark Broadcom HT2100 Root Port Extended Tags as broken CC: stable@vger.kernel.org # v4.11
2018-04-10Merge tag 'ceph-for-4.17-rc1' of git://github.com/ceph/ceph-clientLinus Torvalds
Pull ceph updates from Ilya Dryomov: "The big ticket items are: - support for rbd "fancy" striping (myself). The striping feature bit is now fully implemented, allowing mapping v2 images with non-default striping patterns. This completes support for --image-format 2. - CephFS quota support (Luis Henriques and Zheng Yan). This set is based on the new SnapRealm code in the upcoming v13.y.z ("Mimic") release. Quota handling will be rejected on older filesystems. - memory usage improvements in CephFS (Chengguang Xu). Directory specific bits have been split out of ceph_file_info and some effort went into improving cap reservation code to avoid OOM crashes. Also included a bunch of assorted fixes all over the place from Chengguang and others" * tag 'ceph-for-4.17-rc1' of git://github.com/ceph/ceph-client: (67 commits) ceph: quota: report root dir quota usage in statfs ceph: quota: add counter for snaprealms with quota ceph: quota: cache inode pointer in ceph_snap_realm ceph: fix root quota realm check ceph: don't check quota for snap inode ceph: quota: update MDS when max_bytes is approaching ceph: quota: support for ceph.quota.max_bytes ceph: quota: don't allow cross-quota renames ceph: quota: support for ceph.quota.max_files ceph: quota: add initial infrastructure to support cephfs quotas rbd: remove VLA usage rbd: fix spelling mistake: "reregisteration" -> "reregistration" ceph: rename function drop_leases() to a more descriptive name ceph: fix invalid point dereference for error case in mdsc destroy ceph: return proper bool type to caller instead of pointer ceph: optimize memory usage ceph: optimize mds session register libceph, ceph: add __init attribution to init funcitons ceph: filter out used flags when printing unused open flags ceph: don't wait on writeback when there is no more dirty pages ...
2018-04-10Merge tag 'platform-drivers-x86-v4.17-1' of ↵Linus Torvalds
git://git.infradead.org/linux-platform-drivers-x86 Pull x86 platform driver updates from Andy Shevchenko: - Dell SMBIOS driver fixed against memory leaks. - The fujitsu-laptop driver is cleaned up and now supports hotkeys for Lifebook U7x7 models. Besides that the typo introduced by one of previous clean up series has been fixed. - Specific to x86-based laptops HID device now supports KEY_ROTATE_LOCK_TOGGLE event which is emitted, for example, by Wacom MobileStudio Pro 13. - Turbo MAX 3 technology is enabled for the rest of platforms that support Hardware-P-States feature which have core priority described by ACPI CPPC table. - Mellanox on x86 gets better support of I2C bus in use including support of hotpluggable ones. - Silead touchscreen is enabled on two tablet models, i.e Yours Y8W81 and I.T.Works TW701. - From now on the second fan on Thinkpad P50 is supported. - The topstar-laptop driver is reworked to support new models, in particular Topstar U931. * tag 'platform-drivers-x86-v4.17-1' of git://git.infradead.org/linux-platform-drivers-x86: (41 commits) platform/x86: thinkpad_acpi: Add 2nd Fan Support for Thinkpad P50 platform/x86: dell-smbios: Fix memory leaks in build_tokens_sysfs() intel-hid: support KEY_ROTATE_LOCK_TOGGLE intel-hid: clean up and sort header files platform/x86: silead_dmi: Add entry for the Yours Y8W81 tablet platform/x86: fujitsu-laptop: Support Lifebook U7x7 hotkeys platform/x86: mlx-platform: Add physical bus number auto detection platform/mellanox: mlxreg-hotplug: Change input for device create routine platform/x86: mlx-platform: Add deffered bus functionality platform/x86: mlx-platform: Use define for the channel numbers platform/x86: fujitsu-laptop: Revert UNSUPPORTED_CMD back to an int platform/x86: Fix dell driver init order platform/x86: dell-smbios: Resolve dependency error on ACPI_WMI platform/x86: dell-smbios: Resolve dependency error on DCDBAS platform/x86: Allow for SMBIOS backend defaults platform/x86: dell-smbios: Link all dell-smbios-* modules together platform/x86: dell-smbios: Rename dell-smbios source to dell-smbios-base platform/x86: dell-smbios: Correct some style warnings platform/x86: wmi: Fix misuse of vsprintf extension %pULL platform/x86: intel-hid: Reset wakeup capable flag on removal ...
2018-04-10Merge tag 'dmaengine-4.17-rc1' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
Pull dmaengine updates from Vinod Koul: "This time we have couple of new drivers along with updates to drivers: - new drivers for the DesignWare AXI DMAC and MediaTek High-Speed DMA controllers - stm32 dma and qcom bam dma driver updates - norandom test option for dmatest" * tag 'dmaengine-4.17-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (30 commits) dmaengine: stm32-dma: properly mask irq bits dmaengine: stm32-dma: fix max items per transfer dmaengine: stm32-dma: fix DMA IRQ status handling dmaengine: stm32-dma: Improve memory burst management dmaengine: stm32-dma: fix typo and reported checkpatch warnings dmaengine: stm32-dma: fix incomplete configuration in cyclic mode dmaengine: stm32-dma: threshold manages with bitfield feature dt-bindings: stm32-dma: introduce DMA features bitfield dt-bindings: rcar-dmac: Document r8a77470 support dmaengine: rcar-dmac: Fix too early/late system suspend/resume callbacks dmaengine: dw-axi-dmac: fix spelling mistake: "catched" -> "caught" dmaengine: edma: Check the memory allocation for the memcpy dma device dmaengine: at_xdmac: fix rare residue corruption dmaengine: mediatek: update MAINTAINERS entry with MediaTek DMA driver dmaengine: mediatek: Add MediaTek High-Speed DMA controller for MT7622 and MT7623 SoC dt-bindings: dmaengine: Add MediaTek High-Speed DMA controller bindings dt-bindings: Document the Synopsys DW AXI DMA bindings dmaengine: Introduce DW AXI DMAC driver dmaengine: pl330: fix a race condition in case of threaded irqs dmaengine: imx-sdma: fix pagefault when channel is disabled during interrupt ...
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2025-01-28 06:43:18 +0000