Commit Graph

721128 Commits

Author SHA1 Message Date
Linus Torvalds 18c83d2c03 virtio, vhost, qemu: bugfixes, cleanups
Fixes in qemu, vhost and virtio.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "Fixes in qemu, vhost and virtio"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  fw_cfg: fix the command line module name
  vhost/vsock: fix uninitialized vhost_vsock->guest_cid
  vhost: fix end of range for access_ok
  vhost/scsi: Use safe iteration in vhost_scsi_complete_cmd_work()
  virtio_balloon: fix deadlock on OOM
2017-11-16 13:14:46 -08:00
Linus Torvalds 051089a2ee xen: features and fixes for v4.15-rc1
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Merge tag 'for-linus-4.15-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen updates from Juergen Gross:
 "Xen features and fixes for v4.15-rc1

  Apart from several small fixes it contains the following features:

   - a series by Joao Martins to add vdso support of the pv clock
     interface

   - a series by Juergen Gross to add support for Xen pv guests to be
     able to run on 5 level paging hosts

   - a series by Stefano Stabellini adding the Xen pvcalls frontend
     driver using a paravirtualized socket interface"

* tag 'for-linus-4.15-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (34 commits)
  xen/pvcalls: fix potential endless loop in pvcalls-front.c
  xen/pvcalls: Add MODULE_LICENSE()
  MAINTAINERS: xen, kvm: track pvclock-abi.h changes
  x86/xen/time: setup vcpu 0 time info page
  x86/xen/time: set pvclock flags on xen_time_init()
  x86/pvclock: add setter for pvclock_pvti_cpu0_va
  ptp_kvm: probe for kvm guest availability
  xen/privcmd: remove unused variable pageidx
  xen: select grant interface version
  xen: update arch/x86/include/asm/xen/cpuid.h
  xen: add grant interface version dependent constants to gnttab_ops
  xen: limit grant v2 interface to the v1 functionality
  xen: re-introduce support for grant v2 interface
  xen: support priv-mapping in an HVM tools domain
  xen/pvcalls: remove redundant check for irq >= 0
  xen/pvcalls: fix unsigned less than zero error check
  xen/time: Return -ENODEV from xen_get_wallclock()
  xen/pvcalls-front: mark expected switch fall-through
  xen: xenbus_probe_frontend: mark expected switch fall-throughs
  xen/time: do not decrease steal time after live migration on xen
  ...
2017-11-16 13:06:27 -08:00
Linus Torvalds 974aa5630b First batch of KVM changes for 4.15
Common:
  - Python 3 support in kvm_stat
 
  - Accounting of slabs to kmemcg
 
 ARM:
  - Optimized arch timer handling for KVM/ARM
 
  - Improvements to the VGIC ITS code and introduction of an ITS reset
    ioctl
 
  - Unification of the 32-bit fault injection logic
 
  - More exact external abort matching logic
 
 PPC:
  - Support for running hashed page table (HPT) MMU mode on a host that
    is using the radix MMU mode;  single threaded mode on POWER 9 is
    added as a pre-requisite
 
  - Resolution of merge conflicts with the last second 4.14 HPT fixes
 
  - Fixes and cleanups
 
 s390:
  - Some initial preparation patches for exitless interrupts and crypto
 
  - New capability for AIS migration
 
  - Fixes
 
 x86:
  - Improved emulation of LAPIC timer mode changes, MCi_STATUS MSRs, and
    after-reset state
 
  - Refined dependencies for VMX features
 
  - Fixes for nested SMI injection
 
  - A lot of cleanups
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Merge tag 'kvm-4.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Radim Krčmář:
 "First batch of KVM changes for 4.15

  Common:
   - Python 3 support in kvm_stat
   - Accounting of slabs to kmemcg

  ARM:
   - Optimized arch timer handling for KVM/ARM
   - Improvements to the VGIC ITS code and introduction of an ITS reset
     ioctl
   - Unification of the 32-bit fault injection logic
   - More exact external abort matching logic

  PPC:
   - Support for running hashed page table (HPT) MMU mode on a host that
     is using the radix MMU mode; single threaded mode on POWER 9 is
     added as a pre-requisite
   - Resolution of merge conflicts with the last second 4.14 HPT fixes
   - Fixes and cleanups

  s390:
   - Some initial preparation patches for exitless interrupts and crypto
   - New capability for AIS migration
   - Fixes

  x86:
   - Improved emulation of LAPIC timer mode changes, MCi_STATUS MSRs,
     and after-reset state
   - Refined dependencies for VMX features
   - Fixes for nested SMI injection
   - A lot of cleanups"

* tag 'kvm-4.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (89 commits)
  KVM: s390: provide a capability for AIS state migration
  KVM: s390: clear_io_irq() requests are not expected for adapter interrupts
  KVM: s390: abstract conversion between isc and enum irq_types
  KVM: s390: vsie: use common code functions for pinning
  KVM: s390: SIE considerations for AP Queue virtualization
  KVM: s390: document memory ordering for kvm_s390_vcpu_wakeup
  KVM: PPC: Book3S HV: Cosmetic post-merge cleanups
  KVM: arm/arm64: fix the incompatible matching for external abort
  KVM: arm/arm64: Unify 32bit fault injection
  KVM: arm/arm64: vgic-its: Implement KVM_DEV_ARM_ITS_CTRL_RESET
  KVM: arm/arm64: Document KVM_DEV_ARM_ITS_CTRL_RESET
  KVM: arm/arm64: vgic-its: Free caches when GITS_BASER Valid bit is cleared
  KVM: arm/arm64: vgic-its: New helper functions to free the caches
  KVM: arm/arm64: vgic-its: Remove kvm_its_unmap_device
  arm/arm64: KVM: Load the timer state when enabling the timer
  KVM: arm/arm64: Rework kvm_timer_should_fire
  KVM: arm/arm64: Get rid of kvm_timer_flush_hwstate
  KVM: arm/arm64: Avoid phys timer emulation in vcpu entry/exit
  KVM: arm/arm64: Move phys_timer_emulate function
  KVM: arm/arm64: Use kvm_arm_timer_set/get_reg for guest register traps
  ...
2017-11-16 13:00:24 -08:00
Jason Gunthorpe e6e58e7774 RDMA: Add Jason Gunthorpe as a co-maintainer
As was discussed in September and October, add Jason along with
Doug to have a team maintainership model for the RDMA subystem.

Mellanox Technologies will be funding Jason's independent work on
the maintainership.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-11-16 15:56:29 -05:00
Linus Torvalds 441692aafc Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:

 - add support for ELF fdpic binaries on both MMU and noMMU platforms

 - linker script cleanups

 - support for compressed .data section for XIP images

 - discard memblock arrays when possible

 - various cleanups

 - atomic DMA pool updates

 - better diagnostics of missing/corrupt device tree

 - export information to allow userspace kexec tool to place images more
   inteligently, so that the device tree isn't overwritten by the
   booting kernel

 - make early_printk more efficient on semihosted systems

 - noMMU cleanups

 - SA1111 PCMCIA update in preparation for further cleanups

* 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (38 commits)
  ARM: 8719/1: NOMMU: work around maybe-uninitialized warning
  ARM: 8717/2: debug printch/printascii: translate '\n' to "\r\n" not "\n\r"
  ARM: 8713/1: NOMMU: Support MPU in XIP configuration
  ARM: 8712/1: NOMMU: Use more MPU regions to cover memory
  ARM: 8711/1: V7M: Add support for MPU to M-class
  ARM: 8710/1: Kconfig: Kill CONFIG_VECTORS_BASE
  ARM: 8709/1: NOMMU: Disallow MPU for XIP
  ARM: 8708/1: NOMMU: Rework MPU to be mostly done in C
  ARM: 8707/1: NOMMU: Update MPU accessors to use cp15 helpers
  ARM: 8706/1: NOMMU: Move out MPU setup in separate module
  ARM: 8702/1: head-common.S: Clear lr before jumping to start_kernel()
  ARM: 8705/1: early_printk: use printascii() rather than printch()
  ARM: 8703/1: debug.S: move hexbuf to a writable section
  ARM: add additional table to compressed kernel
  ARM: decompressor: fix BSS size calculation
  pcmcia: sa1111: remove special sa1111 mmio accessors
  pcmcia: sa1111: use sa1111_get_irq() to obtain IRQ resources
  ARM: better diagnostics with missing/corrupt dtb
  ARM: 8699/1: dma-mapping: Remove init_dma_coherent_pool_size()
  ARM: 8698/1: dma-mapping: Mark atomic_pool as __ro_after_init
  ..
2017-11-16 12:50:35 -08:00
Linus Torvalds 5b0e2cb020 powerpc updates for 4.15
Non-highlights:
 
  - Five fixes for the >128T address space handling, both to fix bugs in our
    implementation and to bring the semantics exactly into line with x86.
 
 Highlights:
 
  - Support for a new OPAL call on bare metal machines which gives us a true NMI
    (ie. is not masked by MSR[EE]=0) for debugging etc.
 
  - Support for Power9 DD2 in the CXL driver.
 
  - Improvements to machine check handling so that uncorrectable errors can be
    reported into the generic memory_failure() machinery.
 
  - Some fixes and improvements for VPHN, which is used under PowerVM to notify
    the Linux partition of topology changes.
 
  - Plumbing to enable TM (transactional memory) without suspend on some Power9
    processors (PPC_FEATURE2_HTM_NO_SUSPEND).
 
  - Support for emulating vector loads form cache-inhibited memory, on some
    Power9 revisions.
 
  - Disable the fast-endian switch "syscall" by default (behind a CONFIG), we
    believe it has never had any users.
 
  - A major rework of the API drivers use when initiating and waiting for long
    running operations performed by OPAL firmware, and changes to the
    powernv_flash driver to use the new API.
 
  - Several fixes for the handling of FP/VMX/VSX while processes are using
    transactional memory.
 
  - Optimisations of TLB range flushes when using the radix MMU on Power9.
 
  - Improvements to the VAS facility used to access coprocessors on Power9, and
    related improvements to the way the NX crypto driver handles requests.
 
  - Implementation of PMEM_API and UACCESS_FLUSHCACHE for 64-bit.
 
 Thanks to:
   Alexey Kardashevskiy, Alistair Popple, Allen Pais, Andrew Donnellan, Aneesh
   Kumar K.V, Arnd Bergmann, Balbir Singh, Benjamin Herrenschmidt, Breno Leitao,
   Christophe Leroy, Christophe Lombard, Cyril Bur, Frederic Barrat, Gautham R.
   Shenoy, Geert Uytterhoeven, Guilherme G. Piccoli, Gustavo Romero, Haren
   Myneni, Joel Stanley, Kamalesh Babulal, Kautuk Consul, Markus Elfring, Masami
   Hiramatsu, Michael Bringmann, Michael Neuling, Michal Suchanek, Naveen N. Rao,
   Nicholas Piggin, Oliver O'Halloran, Paul Mackerras, Pedro Miraglia Franco de
   Carvalho, Philippe Bergheaud, Sandipan Das, Seth Forshee, Shriya, Stephen
   Rothwell, Stewart Smith, Sukadev Bhattiprolu, Tyrel Datwyler, Vaibhav Jain,
   Vaidyanathan Srinivasan, William A. Kennington III.
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Merge tag 'powerpc-4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "A bit of a small release, I suspect in part due to me travelling for
  KS. But my backlog of patches to review is smaller than usual, so I
  think in part folks just didn't send as much this cycle.

  Non-highlights:

   - Five fixes for the >128T address space handling, both to fix bugs
     in our implementation and to bring the semantics exactly into line
     with x86.

  Highlights:

   - Support for a new OPAL call on bare metal machines which gives us a
     true NMI (ie. is not masked by MSR[EE]=0) for debugging etc.

   - Support for Power9 DD2 in the CXL driver.

   - Improvements to machine check handling so that uncorrectable errors
     can be reported into the generic memory_failure() machinery.

   - Some fixes and improvements for VPHN, which is used under PowerVM
     to notify the Linux partition of topology changes.

   - Plumbing to enable TM (transactional memory) without suspend on
     some Power9 processors (PPC_FEATURE2_HTM_NO_SUSPEND).

   - Support for emulating vector loads form cache-inhibited memory, on
     some Power9 revisions.

   - Disable the fast-endian switch "syscall" by default (behind a
     CONFIG), we believe it has never had any users.

   - A major rework of the API drivers use when initiating and waiting
     for long running operations performed by OPAL firmware, and changes
     to the powernv_flash driver to use the new API.

   - Several fixes for the handling of FP/VMX/VSX while processes are
     using transactional memory.

   - Optimisations of TLB range flushes when using the radix MMU on
     Power9.

   - Improvements to the VAS facility used to access coprocessors on
     Power9, and related improvements to the way the NX crypto driver
     handles requests.

   - Implementation of PMEM_API and UACCESS_FLUSHCACHE for 64-bit.

  Thanks to: Alexey Kardashevskiy, Alistair Popple, Allen Pais, Andrew
  Donnellan, Aneesh Kumar K.V, Arnd Bergmann, Balbir Singh, Benjamin
  Herrenschmidt, Breno Leitao, Christophe Leroy, Christophe Lombard,
  Cyril Bur, Frederic Barrat, Gautham R. Shenoy, Geert Uytterhoeven,
  Guilherme G. Piccoli, Gustavo Romero, Haren Myneni, Joel Stanley,
  Kamalesh Babulal, Kautuk Consul, Markus Elfring, Masami Hiramatsu,
  Michael Bringmann, Michael Neuling, Michal Suchanek, Naveen N. Rao,
  Nicholas Piggin, Oliver O'Halloran, Paul Mackerras, Pedro Miraglia
  Franco de Carvalho, Philippe Bergheaud, Sandipan Das, Seth Forshee,
  Shriya, Stephen Rothwell, Stewart Smith, Sukadev Bhattiprolu, Tyrel
  Datwyler, Vaibhav Jain, Vaidyanathan Srinivasan, and William A.
  Kennington III"

* tag 'powerpc-4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (151 commits)
  powerpc/64s: Fix Power9 DD2.0 workarounds by adding DD2.1 feature
  powerpc/64s: Fix masking of SRR1 bits on instruction fault
  powerpc/64s: mm_context.addr_limit is only used on hash
  powerpc/64s/radix: Fix 128TB-512TB virtual address boundary case allocation
  powerpc/64s/hash: Allow MAP_FIXED allocations to cross 128TB boundary
  powerpc/64s/hash: Fix fork() with 512TB process address space
  powerpc/64s/hash: Fix 128TB-512TB virtual address boundary case allocation
  powerpc/64s/hash: Fix 512T hint detection to use >= 128T
  powerpc: Fix DABR match on hash based systems
  powerpc/signal: Properly handle return value from uprobe_deny_signal()
  powerpc/fadump: use kstrtoint to handle sysfs store
  powerpc/lib: Implement UACCESS_FLUSHCACHE API
  powerpc/lib: Implement PMEM API
  powerpc/powernv/npu: Don't explicitly flush nmmu tlb
  powerpc/powernv/npu: Use flush_all_mm() instead of flush_tlb_mm()
  powerpc/powernv/idle: Round up latency and residency values
  powerpc/kprobes: refactor kprobe_lookup_name for safer string operations
  powerpc/kprobes: Blacklist emulate_update_regs() from kprobes
  powerpc/kprobes: Do not disable interrupts for optprobes and kprobes_on_ftrace
  powerpc/kprobes: Disable preemption before invoking probe handler for optprobes
  ...
2017-11-16 12:47:46 -08:00
Linus Torvalds 758f875848 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull user namespace update from Eric Biederman:
 "The only change that is production ready this round is the work to
  increase the number of uid and gid mappings a user namespace can
  support from 5 to 340.

  This code was carefully benchmarked and it was confirmed that in the
  existing cases the performance remains the same. In the worst case
  with 340 mappings an cache cold stat times go from 158ns to 248ns.
  That is noticable but still quite small, and only the people who are
  doing crazy things pay the cost.

  This work uncovered some documentation and cleanup opportunities in
  the mapping code, and patches to make those cleanups and improve the
  documentation will be coming in the next merge window"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  userns: Simplify insert_extent
  userns: Make map_id_down a wrapper for map_id_range_down
  userns: Don't read extents twice in m_start
  userns: Simplify the user and group mapping functions
  userns: Don't special case a count of 0
  userns: bump idmap limits to 340
  userns: use union in {g,u}idmap struct
2017-11-16 12:20:15 -08:00
Linus Torvalds a02cd4229e f2fs-for-4.15-rc1
In this round, we introduce sysfile-based quota support which is required
 for Android by default. In addition, we allow that users are able to reserve
 some blocks in runtime to mitigate performance drops in low free space.
 
 Enhancement
 - assign proper data segments according to write_hints given by user
 - issue cache_flush on dirty devices only among multiple devices
 - exploit cp_error flag and add more faults to enhance fault injection test
 - conduct more readaheads during f2fs_readdir
 - add a range for discard commands
 
 Bug fix
 - fix zero stat->st_blocks when inline_data is set
 - drop crypto key and free stale memory pointer while evict_inode is failing
 - fix some corner cases in free space and segment management
 - fix wrong last_disk_size
 
 This series includes lots of clean-ups and code enhancement in terms of xattr
 operations, discard/flush command control. In addition, it adds versatile
 debugfs entries to monitor f2fs status.
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Merge tag 'f2fs-for-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "In this round, we introduce sysfile-based quota support which is
  required for Android by default. In addition, we allow that users are
  able to reserve some blocks in runtime to mitigate performance drops
  in low free space.

  Enhancements:
   - assign proper data segments according to write_hints given by user
   - issue cache_flush on dirty devices only among multiple devices
   - exploit cp_error flag and add more faults to enhance fault
     injection test
   - conduct more readaheads during f2fs_readdir
   - add a range for discard commands

  Bug fixes:
   - fix zero stat->st_blocks when inline_data is set
   - drop crypto key and free stale memory pointer while evict_inode is
     failing
   - fix some corner cases in free space and segment management
   - fix wrong last_disk_size

  This series includes lots of clean-ups and code enhancement in terms
  of xattr operations, discard/flush command control. In addition, it
  adds versatile debugfs entries to monitor f2fs status"

* tag 'f2fs-for-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (75 commits)
  f2fs: deny accessing encryption policy if encryption is off
  f2fs: inject fault in inc_valid_node_count
  f2fs: fix to clear FI_NO_PREALLOC
  f2fs: expose quota information in debugfs
  f2fs: separate nat entry mem alloc from nat_tree_lock
  f2fs: validate before set/clear free nat bitmap
  f2fs: avoid opened loop codes in __add_ino_entry
  f2fs: apply write hints to select the type of segments for buffered write
  f2fs: introduce scan_curseg_cache for cleanup
  f2fs: optimize the way of traversing free_nid_bitmap
  f2fs: keep scanning until enough free nids are acquired
  f2fs: trace checkpoint reason in fsync()
  f2fs: keep isize once block is reserved cross EOF
  f2fs: avoid race in between GC and block exchange
  f2fs: save a multiplication for last_nid calculation
  f2fs: fix summary info corruption
  f2fs: remove dead code in update_meta_page
  f2fs: remove unneeded semicolon
  f2fs: don't bother with inode->i_version
  f2fs: check curseg space before foreground GC
  ...
2017-11-16 12:10:21 -08:00
Darrick J. Wong 2015a63dce xfs: fix type usage
Be consistent about using uint32_t/uint8_t instead of u32/u8.  This is
more so that we don't have to maintain /those/ types in xfsprogs.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
2017-11-16 12:06:45 -08:00
Darrick J. Wong 962cc1ad6c xfs: fix forgotten rcu read unlock when skipping inode reclaim
In commit f2e9ad21 ("xfs: check for race with xfs_reclaim_inode"), we
skip an inode if we're racing with freeing the inode via
xfs_reclaim_inode, but we forgot to release the rcu read lock when
dumping the inode, with the result that we exit to userspace with a lock
held.  Don't do that; generic/320 with a 1k block size fails this
very occasionally.

================================================
WARNING: lock held when returning to user space!
4.14.0-rc6-djwong #4 Tainted: G        W
------------------------------------------------
rm/30466 is leaving the kernel with locks still held!
1 lock held by rm/30466:
 #0:  (rcu_read_lock){....}, at: [<ffffffffa01364d3>] xfs_ifree_cluster.isra.17+0x2c3/0x6f0 [xfs]
------------[ cut here ]------------
WARNING: CPU: 1 PID: 30466 at kernel/rcu/tree_plugin.h:329 rcu_note_context_switch+0x71/0x700
Modules linked in: deadline_iosched dm_snapshot dm_bufio ext4 mbcache jbd2 dm_flakey xfs libcrc32c dax_pmem device_dax nd_pmem sch_fq_codel af_packet [last unloaded: scsi_debug]
CPU: 1 PID: 30466 Comm: rm Tainted: G        W       4.14.0-rc6-djwong #4
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.10.2-1ubuntu1djwong0 04/01/2014
task: ffff880037680000 task.stack: ffffc90001064000
RIP: 0010:rcu_note_context_switch+0x71/0x700
RSP: 0000:ffffc90001067e50 EFLAGS: 00010002
RAX: 0000000000000001 RBX: ffff880037680000 RCX: ffff88003e73d200
RDX: 0000000000000002 RSI: ffffffff819e53e9 RDI: ffffffff819f4375
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff880062c900d0
R10: 0000000000000000 R11: 0000000000000000 R12: ffff880037680000
R13: 0000000000000000 R14: ffffc90001067eb8 R15: ffff880037680690
FS:  00007fa3b8ce8700(0000) GS:ffff88003ec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f69bf77c000 CR3: 000000002450a000 CR4: 00000000000006e0
Call Trace:
 __schedule+0xb8/0xb10
 schedule+0x40/0x90
 exit_to_usermode_loop+0x6b/0xa0
 prepare_exit_to_usermode+0x7a/0x90
 retint_user+0x8/0x20
RIP: 0033:0x7fa3b87fda87
RSP: 002b:00007ffe41206568 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff02
RAX: 0000000000000000 RBX: 00000000010e88c0 RCX: 00007fa3b87fda87
RDX: 0000000000000000 RSI: 00000000010e89c8 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000000
R10: 000000000000015e R11: 0000000000000246 R12: 00000000010c8060
R13: 00007ffe41206690 R14: 0000000000000000 R15: 0000000000000000
---[ end trace e88f83bf0cfbd07d ]---

Fixes: f2e9ad212d
Cc: Omar Sandoval <osandov@fb.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Omar Sandoval <osandov@fb.com>
2017-11-16 12:06:45 -08:00
Linus Torvalds 487e2c9f44 AFS development
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Merge tag 'afs-next-20171113' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

Pull AFS updates from David Howells:
 "kAFS filesystem driver overhaul.

  The major points of the overhaul are:

   (1) Preliminary groundwork is laid for supporting network-namespacing
       of kAFS. The remainder of the namespacing work requires some way
       to pass namespace information to submounts triggered by an
       automount. This requires something like the mount overhaul that's
       in progress.

   (2) sockaddr_rxrpc is used in preference to in_addr for holding
       addresses internally and add support for talking to the YFS VL
       server. With this, kAFS can do everything over IPv6 as well as
       IPv4 if it's talking to servers that support it.

   (3) Callback handling is overhauled to be generally passive rather
       than active. 'Callbacks' are promises by the server to tell us
       about data and metadata changes. Callbacks are now checked when
       we next touch an inode rather than actively going and looking for
       it where possible.

   (4) File access permit caching is overhauled to store the caching
       information per-inode rather than per-directory, shared over
       subordinate files. Whilst older AFS servers only allow ACLs on
       directories (shared to the files in that directory), newer AFS
       servers break that restriction.

       To improve memory usage and to make it easier to do mass-key
       removal, permit combinations are cached and shared.

   (5) Cell database management is overhauled to allow lighter locks to
       be used and to make cell records autonomous state machines that
       look after getting their own DNS records and cleaning themselves
       up, in particular preventing races in acquiring and relinquishing
       the fscache token for the cell.

   (6) Volume caching is overhauled. The afs_vlocation record is got rid
       of to simplify things and the superblock is now keyed on the cell
       and the numeric volume ID only. The volume record is tied to a
       superblock and normal superblock management is used to mediate
       the lifetime of the volume fscache token.

   (7) File server record caching is overhauled to make server records
       independent of cells and volumes. A server can be in multiple
       cells (in such a case, the administrator must make sure that the
       VL services for all cells correctly reflect the volumes shared
       between those cells).

       Server records are now indexed using the UUID of the server
       rather than the address since a server can have multiple
       addresses.

   (8) File server rotation is overhauled to handle VMOVED, VBUSY (and
       similar), VOFFLINE and VNOVOL indications and to handle rotation
       both of servers and addresses of those servers. The rotation will
       also wait and retry if the server says it is busy.

   (9) Data writeback is overhauled. Each inode no longer stores a list
       of modified sections tagged with the key that authorised it in
       favour of noting the modified region of a page in page->private
       and storing a list of keys that made modifications in the inode.

       This simplifies things and allows other keys to be used to
       actually write to the server if a key that made a modification
       becomes useless.

  (10) Writable mmap() is implemented. This allows a kernel to be build
       entirely on AFS.

  Note that Pre AFS-3.4 servers are no longer supported, though this can
  be added back if necessary (AFS-3.4 was released in 1998)"

* tag 'afs-next-20171113' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: (35 commits)
  afs: Protect call->state changes against signals
  afs: Trace page dirty/clean
  afs: Implement shared-writeable mmap
  afs: Get rid of the afs_writeback record
  afs: Introduce a file-private data record
  afs: Use a dynamic port if 7001 is in use
  afs: Fix directory read/modify race
  afs: Trace the sending of pages
  afs: Trace the initiation and completion of client calls
  afs: Fix documentation on # vs % prefix in mount source specification
  afs: Fix total-length calculation for multiple-page send
  afs: Only progress call state at end of Tx phase from rxrpc callback
  afs: Make use of the YFS service upgrade to fully support IPv6
  afs: Overhaul volume and server record caching and fileserver rotation
  afs: Move server rotation code into its own file
  afs: Add an address list concept
  afs: Overhaul cell database management
  afs: Overhaul permit caching
  afs: Overhaul the callback handling
  afs: Rename struct afs_call server member to cm_server
  ...
2017-11-16 11:41:22 -08:00
Linus Torvalds b630a23a73 This is the bulk of pin control changes for the v4.15
kernel cycle:
 
 Core:
 
 - The pin control Kconfig entry PINCTRL is now turned into
   a menuconfig option. This obviously has the implication of
   making the subsystem menu visible in menuconfig. This is
   happening because of two things:
 
   - Intel have started to deploy and depend on pin controllers
     in a way that is affecting users directly. This happens
     on the highly integrated laptop chipsets named after
     geographical places: baytrail, broxton, cannonlake,
     cedarfork, cherryview, denverton, geminilake, lewisburg,
     merrifield, sunrisepoint... It started a while back and
     now it is ever more evident that this is crucial
     infrastructure for x86 laptops and not an embedded
     obscurity anymore. Users need to be aware.
 
   - Pin control expanders on I2C and SPI that are
     arch-agnostic. Currently Semtech SX150X and Microchip
     MCP28x08 but more are expected. Users will have to be
     able to configure these in directly for their set-up.
 
 - Just go and select GPIOLIB now that we made sure that
   GPIOLIB is a very vanilla subsystem. Do not depend on
   it, if we need it, select it.
 
 - Exposing the pin control subsystem in menuconfig uncovered
   a bunch of obscure bugs that are now hopefully fixed,
   all more or less pertaining to Blackfin.
 
 - Unified namespace for cross-calls between pin control and
   GPIO.
 
 - New support for clock skew/delay generic DT bindings
   and generic pin config options for this.
 
 - Minor documentation improvements.
 
 Various:
 
 - The Renesas SH-PFC pin controller has evolved a lot. It seems
   Renesas are churning out new SoCs by the minute.
 
 - A bunch of non-critical fixes for the Rockchip driver.
 
 - Improve the use of library functions instead of open coding.
 
 - Support the MCP28018 variant in the MCP28x08 driver.
 
 - Static constifying.
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Merge tag 'pinctrl-v4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the bulk of pin control changes for the v4.15 kernel cycle:

  Core:

   - The pin control Kconfig entry PINCTRL is now turned into a
     menuconfig option. This obviously has the implication of making the
     subsystem menu visible in menuconfig. This is happening because of
     two things:

      (a) Intel have started to deploy and depend on pin controllers in
          a way that is affecting users directly. This happens on the
          highly integrated laptop chipsets named after geographical
          places: baytrail, broxton, cannonlake, cedarfork, cherryview,
          denverton, geminilake, lewisburg, merrifield, sunrisepoint...
          It started a while back and now it is ever more evident that
          this is crucial infrastructure for x86 laptops and not an
          embedded obscurity anymore. Users need to be aware.

      (b) Pin control expanders on I2C and SPI that are arch-agnostic.
          Currently Semtech SX150X and Microchip MCP28x08 but more are
          expected. Users will have to be able to configure these in
          directly for their set-up.

   - Just go and select GPIOLIB now that we made sure that GPIOLIB is a
     very vanilla subsystem. Do not depend on it, if we need it, select
     it.

   - Exposing the pin control subsystem in menuconfig uncovered a bunch
     of obscure bugs that are now hopefully fixed, all more or less
     pertaining to Blackfin.

   - Unified namespace for cross-calls between pin control and GPIO.

   - New support for clock skew/delay generic DT bindings and generic
     pin config options for this.

   - Minor documentation improvements.

  Various:

   - The Renesas SH-PFC pin controller has evolved a lot. It seems
     Renesas are churning out new SoCs by the minute.

   - A bunch of non-critical fixes for the Rockchip driver.

   - Improve the use of library functions instead of open coding.

   - Support the MCP28018 variant in the MCP28x08 driver.

   - Static constifying"

* tag 'pinctrl-v4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (91 commits)
  pinctrl: gemini: Fix missing pad descriptions
  pinctrl: Add some depends on HAS_IOMEM
  pinctrl: samsung/s3c24xx: add CONFIG_OF dependency
  pinctrl: gemini: Fix GMAC groups
  pinctrl: qcom: spmi-gpio: Add pmi8994 gpio support
  pinctrl: ti-iodelay: remove redundant unused variable dev
  pinctrl: max77620: Use common error handling code in max77620_pinconf_set()
  pinctrl: gemini: Implement clock skew/delay config
  pinctrl: gemini: Use generic DT parser
  pinctrl: Add skew-delay pin config and bindings
  pinctrl: armada-37xx: Add edge both type gpio irq support
  pinctrl: uniphier: remove eMMC hardware reset pin-mux
  pinctrl: rockchip: Add iomux-route switching support for rk3288
  pinctrl: intel: Add Intel Cedar Fork PCH pin controller support
  pinctrl: intel: Make offset to interrupt status register configurable
  pinctrl: sunxi: Enforce the strict mode by default
  pinctrl: sunxi: Disable strict mode for old pinctrl drivers
  pinctrl: sunxi: Introduce the strict flag
  pinctrl: sh-pfc: Save/restore registers for PSCI system suspend
  pinctrl: sh-pfc: r8a7796: Use generic IOCTRL register description
  ...
2017-11-16 10:57:11 -08:00
Linus Torvalds 9c7a867ebd - Fix-ups
- Handle 32bit overflow; pwm_bl
    - Remove redundant code/checks; tps65217_bl, ili922x
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Merge tag 'backlight-next-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:

   - handle 32bit overflow in pwm_bl

   - remove redundant code/checks in tps65217_bl and ili922x

* tag 'backlight-next-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: ili922x: Remove redundant variable len
  backlight: tps65217_bl: Remove unnecessary default brightness check
  backlight: pwm_bl: Fix overflow condition
2017-11-16 10:36:46 -08:00
James Smart cce75291ff nvmet_fc: fix better length checking
Reorganize nvmet_fc_handle_fcp_rqst() so that the nvmet req.transfer_len
field is set after the call nvmet_req_init(). An update to nvmet now
has nvmet_req_init() clearing the field, thus the fc transport was losing
the value.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-11-16 11:27:04 -07:00
Linus Torvalds d3092e4e99 - New Drivers
- Add support for Cherry Trail Dollar Cove TI PMIC
    - Add support for Add Spreadtrum SC27xx series PMICs
 
  - New Device Support
    - Add support Regulator to axp20x
 
  - New Functionality
    - Add DT support; aspeed-scu sc27xx-pmic
    - Add power saving support; rts5249
 
  - Fix-ups
    - DT clean-up/rework; tps65217, max77693, iproc-cdru, iproc-mhb, tps65218
    - Staticise/constify; stw481x
    - Use new succinct IRQ API; fsl-imx25-tsadc
    - Kconfig fix-ups; MFD_TPS65218
    - Identify SPI method; lpc_ich
    - Use managed resources (devm_*) calls; ssbi
    - Remove unused/obsolete code/documentation; mc13xxx
 
  - Bug Fixes
    - Fix typo in MAINTAINERS
    - Fix error handling; mxs-lradc
    - Clean-up IRQs on .remove; fsl-imx25-tsadc
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Merge tag 'mfd-next-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "New drivers:
   - Add support for Cherry Trail Dollar Cove TI PMIC
   - Add support for Add Spreadtrum SC27xx series PMICs

  New device support:
   - Add support Regulator to axp20x

  New functionality:
   - Add DT support; aspeed-scu sc27xx-pmic
   - Add power saving support; rts5249

  Fix-ups:
   - DT clean-up/rework; tps65217, max77693, iproc-cdru, iproc-mhb, tps65218
   - Staticise/constify; stw481x
   - Use new succinct IRQ API; fsl-imx25-tsadc
   - Kconfig fix-ups; MFD_TPS65218
   - Identify SPI method; lpc_ich
   - Use managed resources (devm_*) calls; ssbi
   - Remove unused/obsolete code/documentation; mc13xxx

  Bug fixes:
   - Fix typo in MAINTAINERS
   - Fix error handling; mxs-lradc
   - Clean-up IRQs on .remove; fsl-imx25-tsadc"

* tag 'mfd-next-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (21 commits)
  dt-bindings: mfd: mc13xxx: Remove obsolete property
  mfd: axp20x: Add axp20x-regulator cell for AXP813
  mfd: Add Spreadtrum SC27xx series PMICs driver
  dt-bindings: mfd: Add Spreadtrum SC27xx PMIC documentation
  mfd: ssbi: Use devm_of_platform_populate()
  mfd: fsl-imx25: Clean up irq settings during removal
  mfd: mxs-lradc: Fix error handling in mxs_lradc_probe()
  mfd: lpc_ich: Avoton/Rangeley uses SPI_BYT method
  mfd: tps65218: Introduce dependency on CONFIG_OF
  mfd: tps65218: Correct the config description
  MAINTAINERS: Fix Dialog search term for watchdog binding file
  mfd: fsl-imx25: Set irq handler and data in one go
  mfd: rts5249: Add support for RTS5250S power saving
  ACPI / PMIC: Add opregion driver for Intel Dollar Cove TI PMIC
  mfd: Add support for Cherry Trail Dollar Cove TI PMIC
  syscon: dt-bindings: Add binding document for iProc MHB block
  syscon: dt-bindings: Add binding doc for Broadcom iProc CDRU
  mfd: max77693: Add muic of_compatible in mfd_cell
  mfd: stw481x: Make three arrays static const, reduces object code size
  mfd: tps65217: Introduce dependency on CONFIG_OF
  ...
2017-11-16 09:15:57 -08:00
Linus Torvalds 2bf16b7a73 Char/Misc patches for 4.15-rc1
Here is the big set of char/misc and other driver subsystem patches for
 4.15-rc1.
 
 There are small changes all over here, hyperv driver updates, pcmcia
 driver updates, w1 driver updats, vme driver updates, nvmem driver
 updates, and lots of other little one-off driver updates as well.  The
 shortlog has the full details.
 
 Note, there will be a merge conflict in drivers/misc/lkdtm_core.c when
 merging to your tree as one lkdtm patch came in through the perf tree as
 well as this one.  The resolution is to take the const change that this
 tree provides.
 
 All of these have been in linux-next for quite a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc updates from Greg KH:
 "Here is the big set of char/misc and other driver subsystem patches
  for 4.15-rc1.

  There are small changes all over here, hyperv driver updates, pcmcia
  driver updates, w1 driver updats, vme driver updates, nvmem driver
  updates, and lots of other little one-off driver updates as well. The
  shortlog has the full details.

  All of these have been in linux-next for quite a while with no
  reported issues"

* tag 'char-misc-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (90 commits)
  VME: Return -EBUSY when DMA list in use
  w1: keep balance of mutex locks and refcnts
  MAINTAINERS: Update VME subsystem tree.
  nvmem: sunxi-sid: add support for A64/H5's SID controller
  nvmem: imx-ocotp: Update module description
  nvmem: imx-ocotp: Enable i.MX7D OTP write support
  nvmem: imx-ocotp: Add i.MX7D timing write clock setup support
  nvmem: imx-ocotp: Move i.MX6 write clock setup to dedicated function
  nvmem: imx-ocotp: Add support for banked OTP addressing
  nvmem: imx-ocotp: Pass parameters via a struct
  nvmem: imx-ocotp: Restrict OTP write to IMX6 processors
  nvmem: uniphier: add UniPhier eFuse driver
  dt-bindings: nvmem: add description for UniPhier eFuse
  nvmem: set nvmem->owner to nvmem->dev->driver->owner if unset
  nvmem: qfprom: fix different address space warnings of sparse
  nvmem: mtk-efuse: fix different address space warnings of sparse
  nvmem: mtk-efuse: use stack for nvmem_config instead of malloc'ing it
  nvmem: imx-iim: use stack for nvmem_config instead of malloc'ing it
  thunderbolt: tb: fix use after free in tb_activate_pcie_devices
  MAINTAINERS: Add git tree for Thunderbolt development
  ...
2017-11-16 09:10:59 -08:00
Linus Torvalds b9743042b3 Driver core patches for 4.15-rc1
Here is the set of driver core / debugfs patches for 4.15-rc1.
 
 Not many here, mostly all are debugfs fixes to resolve some
 long-reported problems with files going away with references to them in
 userspace.  There's also some SPDX cleanups for the debugfs code, as
 well as a few other minor driver core changes for issues reported by
 people.
 
 All of these have been in linux-next for a week or more with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the set of driver core / debugfs patches for 4.15-rc1.

  Not many here, mostly all are debugfs fixes to resolve some
  long-reported problems with files going away with references to them
  in userspace. There's also some SPDX cleanups for the debugfs code, as
  well as a few other minor driver core changes for issues reported by
  people.

  All of these have been in linux-next for a week or more with no
  reported issues"

* tag 'driver-core-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  driver core: Fix device link deferred probe
  debugfs: Remove redundant license text
  debugfs: add SPDX identifiers to all debugfs files
  debugfs: defer debugfs_fsdata allocation to first usage
  debugfs: call debugfs_real_fops() only after debugfs_file_get()
  debugfs: purge obsolete SRCU based removal protection
  IB/hfi1: convert to debugfs_file_get() and -put()
  debugfs: convert to debugfs_file_get() and -put()
  debugfs: debugfs_real_fops(): drop __must_hold sparse annotation
  debugfs: implement per-file removal protection
  debugfs: add support for more elaborate ->d_fsdata
  driver core: Move device_links_purge() after bus_remove_device()
  arch_topology: Fix section miss match warning due to free_raw_capacity()
  driver-core: pr_err() strings should end with newlines
2017-11-16 08:55:30 -08:00
Masahiro Yamada ba5b5034bd arm64: dts: uniphier: route on-board device IRQ to GPIO controller for PXs3
Commit 429f203eb7 ("arm64: dts: uniphier: route on-board device IRQ
to GPIO controller") missed to update this DTS.  It becames a real
problem when arm and arm64 trees are merged together.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2017-11-16 17:16:55 +01:00
Masahiro Yamada 7f855fc805 kbuild: move coccicheck help from scripts/Makefile.help to top Makefile
In my view, it is not helpful to have a separate file just for
the coccicheck help message.  Merge scripts/Makefile.help into
the top-level Makefile.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
2017-11-17 00:33:09 +09:00
Masahiro Yamada 52c291a36c sh: decompressor: add shipped files to .gitignore
These files are copied from arch/sh/lib, so should be ignored by git.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-17 00:33:08 +09:00
Masahiro Yamada 380a1edbcb frv: .gitignore: ignore vmlinux.lds
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-17 00:33:08 +09:00
Heiko Carstens ab35727eb8 s390: remove unused parameter from Makefile
Remove unused parameter from the call function,
which I accidentally added.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:21 +01:00
Steffen Maier 5c13db9b5d zfcp: purely mechanical update using timer API, plus blank lines
erp_memwait only occurs in seldom memory pressure situations.
The typical case never uses the associated timer and thus also
does not need to initialize the timer.
Also, we don't want to re-initialize the timer each time we re-use an
erp_action in zfcp_erp_setup_act() [see also v4.14-rc7 commit ab31fd0ce6
("scsi: zfcp: fix erp_action use-before-initialize in REC action trace")
for erp_action life cycle].
Hence, retain the lazy inintialization of zfcp_erp_action.timer
in zfcp_erp_strategy_memwait().

Add an empty line after declarations in zfcp_erp_timeout_handler()
and zfcp_fsf_request_timeout_handler() even though it was also missing
before the timer conversion.

Fix checkpatch warning:
WARNING: function definition argument 'struct timer_list *' should also have an identifier name
+extern void zfcp_erp_timeout_handler(struct timer_list *);

Depends-on: v4.14-rc3 commit 686fef928b ("timer: Prepare to change timer callback argument type")
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Reviewed-by: Jens Remus <jremus@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:19 +01:00
Kees Cook 75492a5156 s390/scsi: Convert timers to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Steffen Maier <maier@linux.vnet.ibm.com>
Cc: Benjamin Block <bblock@linux.vnet.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux-s390@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:17 +01:00
Hendrik Brueckner 544e8dd7a8 s390/cpum_sf: correctly set the PID and TID in perf samples
The hardware sampler creates samples that are processed at a later
point in time.  The PID and TID values of the perf samples that are
created for hardware samples are initialized with values from the
current task.  Hence, the PID and TID values are not correct and
perf samples are associated with wrong processes.

The PID and TID values are obtained from the Host Program Parameter
(HPP) field in the basic-sampling data entries.  These PIDs are
valid in the init PID namespace.  Ensure that the PIDs in the perf
samples are resolved considering the PID namespace in which the
perf event was created.

To correct the PID and TID values in the created perf samples,
a special overflow handler is installed.  It replaces the default
overflow handler and does not become effective if any other
overflow handler is used.  With the special overflow handler most
of the perf samples are associated with the right processes.
For processes, that are no longer exist, the association might
still be wrong.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:17 +01:00
Hendrik Brueckner d4c7e649d7 s390/cpum_sf: load program parameter at sampler enablement
The lpp instruction is used to place the PID of the current
task in the program-parameter (PP) register.  The register
contents is then included in the sampling data entries.

The lpp instruction loads the PP register only when at least
one sampling function is enabled.  Otherwise it is executed
as a no-op.

Linux calls lpp at context switch.  If the context switch
happens before the sampler is enabled, the PP register is
empty.  That means, the PID of the task that is sampled is
not stored in sampling data until the next context switch.

Hence, always call lpp when enabling the sampler.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:16 +01:00
Hendrik Brueckner de9954b75e s390/perf: add perf register support for floating-point registers
For correct unwinding of user space processes, the floating-point
register contents are required.  For example, leaf functions might
use fp registers to temporarily store the return address.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Reviewed-and-tested-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:15 +01:00
Hendrik Brueckner 0da0017f72 s390/perf: extend perf_regs support to include floating-point registers
Extend the perf register support to also export floating-point register
contents for user space tasks.  Floating-point registers might be used
in leaf functions to contain the return address.  Hence, they are required
for proper DWARF unwinding.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Reviewed-and-tested-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:14 +01:00
Hendrik Brueckner a9fc2db0a8 s390/perf: define common DWARF register string table
Instead of defining DWARF register to string table in dwarf-regs-table.h
and dwarf-regs.c, use a common table in dwarf-regs-table.h.

Ensure that the DWARF register table is up-to-date with
http://refspecs.linuxfoundation.org/ELF/zSeries/lzsabi0_s390/x1542.html.

For unwinding with libdw, also ensure to correctly setup the DWARF
register frame according to the register mappings.  Currently, libdw
supports up to 32 registers only.

Suggested-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Reviewed-and-tested-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:13 +01:00
Heiko Carstens f704ef4460 s390/perf: add support for perf_regs and libdw
With support for perf_regs and libdw, you can record and report
call graphs for user space programs. Simply invoke perf with
the --call-graph=dwarf command line option.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
[brueckner: added dwfl_thread_state_register_pc() call]
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Reviewed-and-tested-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:12 +01:00
Heiko Carstens c33eff6005 s390/perf: add perf_regs support and user stack dump
Add s390 support to dump user stack to user space for DWARF
stack unwinding.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Reviewed-and-tested-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:11 +01:00
Hendrik Brueckner 9232c3c741 s390/cpum_sf: do not register PMU if no sampling mode is authorized
Previously, the cpum_sf PMU was registered even if there is no
sampling mode authorized.  Add a check and register cpum_sf only
at least one sampling mode is authorized.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:10 +01:00
Pu Hou 3d43b981eb s390/cpumf: remove raw event support in basic-only sampling mode
Raw sample was implemented to export the diagnostic samples.
With having this achieved with AUX buffers, there is no requirement
for basic samples to export raw data.  In particular, most basic
sampling information are consumed for creating the perf event sample.

Signed-off-by: Pu Hou <bjhoupu@linux.vnet.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:09 +01:00
Pu Hou a3f22d505f s390/perf: add callback to perf to enable using AUX buffer
Perf tool need implement a callback to enable using AUX buffer. Perf
will do another mmap() to trigger the setup of AUX buffer in kernel
if there is such callback. The default size of the AUX buffer is set
properly according to the sampling frequency to avoid overflow. It
could also be manually set by -m option of perf.

The interface of perf is not changed. Diagnostic mode sampling
could be started by `perf record -e rBD000` like before.

Signed-off-by: Pu Hou <bjhoupu@linux.vnet.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:08 +01:00
Pu Hou cbf6948f36 s390/cpumf: enable using AUX buffer
Modify PMU callback to use AUX buffer for diagnostic mode sampling.
Basic-mode sampling still use orignal way.

Signed-off-by: Pu Hou <bjhoupu@linux.vnet.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:07 +01:00
Pu Hou ca5955cdea s390/cpumf: introduce AUX buffer for dump diagnostic sample data
Current implementation uses a private buffer for cpumf to dump samples.
Samples first go to this buffer. Then copy to ring buffer allocated
by perf core. With AUX buffer, this copy is not needed. AUX buffer is
shared and zero-copy mapped to user space. The trailer information at
the end of each SDB(sample data block) is also exported to user space.
AUX buffer is used when diagnostic sampling mode is enabled.

This patch contains functions to setup/free AUX buffer or to begin/end
sampling per-cpu. Also include function called in interrupt to
collect samples.

Signed-off-by: Pu Hou <bjhoupu@linux.vnet.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-16 15:06:06 +01:00
Eric W. Biederman 7c8a61d9ee net/sctp: Always set scope_id in sctp_inet6_skb_msgname
Alexandar Potapenko while testing the kernel with KMSAN and syzkaller
discovered that in some configurations sctp would leak 4 bytes of
kernel stack.

Working with his reproducer I discovered that those 4 bytes that
are leaked is the scope id of an ipv6 address returned by recvmsg.

With a little code inspection and a shrewd guess I discovered that
sctp_inet6_skb_msgname only initializes the scope_id field for link
local ipv6 addresses to the interface index the link local address
pertains to instead of initializing the scope_id field for all ipv6
addresses.

That is almost reasonable as scope_id's are meaniningful only for link
local addresses.  Set the scope_id in all other cases to 0 which is
not a valid interface index to make it clear there is nothing useful
in the scope_id field.

There should be no danger of breaking userspace as the stack leak
guaranteed that previously meaningless random data was being returned.

Fixes: 372f525b495c ("SCTP:  Resync with LKSCTP tree.")
History-tree: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git
Reported-by: Alexander Potapenko <glider@google.com>
Tested-by: Alexander Potapenko <glider@google.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-16 23:00:30 +09:00
Huacai Chen cc54c1d32e fealnx: Fix building error on MIPS
This patch try to fix the building error on MIPS. The reason is MIPS
has already defined the LONG macro, which conflicts with the LONG enum
in drivers/net/ethernet/fealnx.c.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-16 22:58:12 +09:00
Radim Krčmář a6014f1ab7 KVM: s390: fixes and improvements for 4.15
- Some initial preparation patches for exitless interrupts and crypto
 - New capability for AIS migration
 - Fixes
 - merge of the sthyi tree from the base s390 team, which moves the sthyi
 out of KVM into a shared function also for non-KVM
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Merge tag 'kvm-s390-next-4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux

KVM: s390: fixes and improvements for 4.15

- Some initial preparation patches for exitless interrupts and crypto
- New capability for AIS migration
- Fixes
- merge of the sthyi tree from the base s390 team, which moves the sthyi
out of KVM into a shared function also for non-KVM
2017-11-16 14:39:46 +01:00
David S. Miller 6a787d6f59 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
Steffen Klassert says:

====================
1) Copy policy family in clone_policy, otherwise this can
   trigger a BUG_ON in af_key. From Herbert Xu.

2) Revert "xfrm: Fix stack-out-of-bounds read in xfrm_state_find."
   This added a regression with transport mode when no addresses
   are configured on the policy template.

Both patches are stable candidates.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-16 22:33:54 +09:00
David S. Miller d871c321bb Merge branch 'isdn-hisax-Fix-pnp_irq-error-checking'
Arvind Yadav says:

====================
isdn: hisax: Fix pnp_irq's error checking

The pnp_irq() function returns -1 if an error occurs.
pnp_irq() error checking for zero is not correct.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-16 22:31:16 +09:00
Arvind Yadav 20525563b2 isdn: hisax: Fix pnp_irq's error checking for setup_teles3
The pnp_irq() function returns -1 if an error occurs.
pnp_irq() error checking for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-16 22:31:16 +09:00
Arvind Yadav d48cc29ae7 isdn: hisax: Fix pnp_irq's error checking for setup_sedlbauer_isapnp
The pnp_irq() function returns -1 if an error occurs.
pnp_irq() error checking for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-16 22:31:16 +09:00
Arvind Yadav 4bef0eb020 isdn: hisax: Fix pnp_irq's error checking for setup_niccy
The pnp_irq() function returns -1 if an error occurs.
pnp_irq() error checking for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-16 22:31:16 +09:00
Arvind Yadav 203d2027a1 isdn: hisax: Fix pnp_irq's error checking for setup_ix1micro
The pnp_irq() function returns -1 if an error occurs.
pnp_irq() error checking for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-16 22:31:16 +09:00
Arvind Yadav 56cdb919f7 isdn: hisax: Fix pnp_irq's error checking for setup_isurf
The pnp_irq() function returns -1 if an error occurs.
pnp_irq() error checking for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-16 22:31:16 +09:00
Arvind Yadav eb545c124a isdn: hisax: Handle return value of pnp_irq and pnp_port_start
pnp_irq() and pnp_port_start() can fail here and we must check
its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-16 22:31:16 +09:00
Arvind Yadav faa2efff3d isdn: hisax: Fix pnp_irq's error checking for setup_hfcs
The pnp_irq() function returns -1 if an error occurs.
pnp_irq() error checking for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-16 22:31:16 +09:00
Arvind Yadav a6234b8965 isdn: hisax: Fix pnp_irq's error checking for setup_hfcsx
The pnp_irq() function returns -1 if an error occurs.
pnp_irq() error checking for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-16 22:31:16 +09:00
Arvind Yadav 3cf631b567 isdn: hisax: Fix pnp_irq's error checking for setup_elsa_isapnp
The pnp_irq() function returns -1 if an error occurs.
pnp_irq() error checking for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-16 22:31:15 +09:00