The IOC4 is a multi-function chip seen on SGI SN2 and some SGI MIPS
systems.  This removes the base driver, which while not having an SN2
Kconfig dependency was only for sub-drivers that had one.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-15-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

The IOC3 is a multi-function chip seen on SGI SN2 and some SGI
MIPS systems.  This removes the last bit of SN2 specific support,
while the bits used by the mips ports are still around (and being
substantially rewritten at the moment).
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-14-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

The SGI SN2 support is about to be removed, so drop the bits specific to
it from this driver.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-13-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

The SGI SN2 support is about to be removed, so drop the bits specific to
it from this driver.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-12-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

Note this also marks xp broken on ia64 now, as the UV support, which
was disable in generic kernels before actually never compiled due to
undefined uv_gpa_to_soc_phys_ram and uv_gpa_in_mmr_space symbols since
at least commit c2c9f115 ("x86: uv: update XPC to handle updated
BIOS interface").
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-11-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

The SGI SN2 support is about to be removed, so drop the bits specific to
it from this driver.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-10-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-9-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-8-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-7-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-6-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-5-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-4-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-3-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-2-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

If CONFIG_ARCH_TASK_STRUCT_ALLOCATOR is set task_struct_whitelist is
never called, and thus generates a compiler warning.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190812065524.19959-5-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190812065524.19959-4-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

Replace the "no break" comments with something that the compiler
recognizes.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190812065524.19959-3-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

Also reindent the switch statement to use the normal kernel style
while at it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190812065524.19959-2-hch@lst.deSigned-off-by: Tony Luck <tony.luck@intel.com>

The function free_module in file kernel/module.c as follow:

void free_module(struct module *mod) {
	......
	module_arch_cleanup(mod);
	......
	module_arch_freeing_init(mod);
	......
}

Both module_arch_cleanup and module_arch_freeing_init function
would free the mod->arch.init_unw_table, which cause double free.

Here, set mod->arch.init_unw_table = NULL after remove the unwind
table to avoid double free.
Signed-off-by: chenzefeng <chenzefeng2@huawei.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

Pull tpm fixes from Jarkko Sakkinen:
 "Two bug fixes that did not make into my first pull request"

* tag 'tpmdd-next-20190805' of git://git.infradead.org/users/jjs/linux-tpmdd:
  tpm: tpm_ibm_vtpm: Fix unallocated banks
  tpm: Fix null pointer dereference on chip register error path

Pull MTD fixes from Miquel Raynal:
 "NAND:

   - Fix Micron driver as some chips enable internal ECC correction
     during their discovery while they advertize they do not have any.

  Hyperbus:

   - Restrict the build to only ARM64 SoCs (and compile testing) which
     is what should have been done since the beginning.

   - Fix Kconfig issue by selection something instead of implying it"

* tag 'mtd/fixes-for-5.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
  mtd: hyperbus: Add hardware dependency to AM654 driver
  mtd: hyperbus: Kconfig: Fix HBMC_AM654 dependencies
  mtd: rawnand: micron: handle on-die "ECC-off" devices correctly

The nr_allocated_banks and allocated banks are initialized as part of
tpm_chip_register. Currently, this is done as part of auto startup
function. However, some drivers, like the ibm vtpm driver, do not run
auto startup during initialization. This results in uninitialized memory
issue and causes a kernel panic during boot.

This patch moves the pcr allocation outside the auto startup function
into tpm_chip_register. This ensures that allocated banks are initialized
in any case.

Fixes: 879b5892 ("tpm: retrieve digest size of unknown algorithms with PCR read")
Reported-by: Michal Suchanek <msuchanek@suse.de>
Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>
Tested-by: Sachin Sant <sachinp@linux.vnet.ibm.com>
Tested-by: Michal Suchánek <msuchanek@suse.de>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

If clk_enable is not defined and chip initialization
is canceled code hits null dereference.

Easily reproducible with vTPM init fail:
  swtpm chardev --tpmstate dir=nonexistent_dir --tpm2 --vtpm-proxy

BUG: kernel NULL pointer dereference, address: 00000000
...
Call Trace:
 tpm_chip_start+0x9d/0xa0 [tpm]
 tpm_chip_register+0x10/0x1a0 [tpm]
 vtpm_proxy_work+0x11/0x30 [tpm_vtpm_proxy]
 process_one_work+0x214/0x5a0
 worker_thread+0x134/0x3e0
 ? process_one_work+0x5a0/0x5a0
 kthread+0xd4/0x100
 ? process_one_work+0x5a0/0x5a0
 ? kthread_park+0x90/0x90
 ret_from_fork+0x19/0x24

Fixes: 719b7d81 ("tpm: introduce tpm_chip_start() and tpm_chip_stop()")
Cc: stable@vger.kernel.org # v5.1+
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

Pull powerpc fixes from Michael Ellerman:
 "Some more powerpc fixes for 5.3:

   - Wire up the new clone3 syscall.

   - A fix for the PAPR SCM nvdimm driver, to fix a crash when firmware
     gives us a device that's attached to a non-online NUMA node.

   - A fix for a boot failure on 32-bit with KASAN enabled.

   - Three fixes for implicit fall through warnings, some of which are
     errors for us due to -Werror.

  Thanks to: Aneesh Kumar K.V, Christophe Leroy, Kees Cook, Santosh
  Sivaraj, Stephen Rothwell"

* tag 'powerpc-5.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/kasan: fix early boot failure on PPC32
  drivers/macintosh/smu.c: Mark expected switch fall-through
  powerpc/spe: Mark expected switch fall-throughs
  powerpc/nvdimm: Pick nearby online node if the device node is not online
  powerpc/kvm: Fall through switch case explicitly
  powerpc: Wire up clone3 syscall

At the end of the v5.3 upstream kernel development cycle, Simon will be
stepping down from his role as Renesas SoC maintainer.  Starting with
the v5.4 development cycle, Geert is taking over this role.

Add Geert as a co-maintainer, and add his git repository and branch.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'kbuild-fixes-v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - detect missing missing "WITH Linux-syscall-note" for uapi headers

 - fix needless rebuild when using Clang

 - fix false-positive cc-option in Kconfig when using Clang

 - avoid including corrupted .*.cmd files in the modpost stage

 - fix warning of 'make vmlinux'

 - fix {m,n,x,g}config to not generate the broken .config on the second
   save operation.

 - some trivial Makefile fixes

* tag 'kbuild-fixes-v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kconfig: Clear "written" flag to avoid data loss
  kbuild: Check for unknown options with cc-option usage in Kconfig and clang
  lib/raid6: fix unnecessary rebuild of vpermxor*.c
  kbuild: modpost: do not parse unnecessary rules for vmlinux modpost
  kbuild: modpost: remove unnecessary dependency for __modpost
  kbuild: modpost: handle KBUILD_EXTRA_SYMBOLS only for external modules
  kbuild: modpost: include .*.cmd files only when targets exist
  kbuild: initialize CLANG_FLAGS correctly in the top Makefile
  kbuild: detect missing "WITH Linux-syscall-note" for uapi headers

Pull SafeSetID maintainer update from Micah Morton:
 "Add entry in MAINTAINERS file for SafeSetID LSM"

* tag 'safesetid-maintainers-correction-5.3-rc2' of git://github.com/micah-morton/linux:
  Add entry in MAINTAINERS file for SafeSetID LSM

Prior to this commit, starting nconfig, xconfig or gconfig, and saving
the .config file more than once caused data loss, where a .config file
that contained only comments would be written to disk starting from the
second save operation.

This bug manifests itself because the SYMBOL_WRITTEN flag is never
cleared after the first call to conf_write, and subsequent calls to
conf_write then skip all of the configuration symbols due to the
SYMBOL_WRITTEN flag being set.

This commit resolves this issue by clearing the SYMBOL_WRITTEN flag
from all symbols before conf_write returns.

Fixes: 8e2442a5 ("kconfig: fix missing choice values in auto.conf")
Cc: linux-stable <stable@vger.kernel.org> # 4.19+
Signed-off-by: M. Vefa Bicakci <m.v.b@runbox.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

Pull Xtensa fix from Max Filippov:
 "Fix build for xtensa cores with coprocessors that was broken by
  entry/return abstraction patch"

* tag 'xtensa-20190803' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: fix build for cores with coprocessors

Pull i2c fixes from Wolfram Sang:
 "A set of driver fixes for the I2C subsystem"

* 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: s3c2410: Mark expected switch fall-through
  i2c: at91: fix clk_offset for sama5d2
  i2c: at91: disable TXRDY interrupt after sending data
  i2c: iproc: Fix i2c master read more than 63 bytes
  eeprom: at24: make spd world-readable again

Pull perf tooling fixes from Thomas Gleixner:
 "A set of updates for perf tools and documentation:

  perf header:
    - Prevent a division by zero
    - Deal with an uninitialized warning proper

  libbpf:
    - Fix the missiong __WORDSIZE definition for musl & al

  UAPI headers:
    - Synchronize kernel headers

  Documentation:
    - Fix the memory units for perf.data size"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  libbpf: fix missing __WORDSIZE definition
  perf tools: Fix perf.data documentation units for memory size
  perf header: Fix use of unitialized value warning
  perf header: Fix divide by zero error if f_header.attr_size==0
  tools headers UAPI: Sync if_link.h with the kernel
  tools headers UAPI: Sync sched.h with the kernel
  tools headers UAPI: Sync usbdevice_fs.h with the kernels to get new ioctl
  tools perf beauty: Fix usbdevfs_ioctl table generator to handle _IOC()
  tools headers UAPI: Update tools's copy of drm.h headers
  tools headers UAPI: Update tools's copy of mman.h headers
  tools headers UAPI: Update tools's copy of kvm.h headers
  tools include UAPI: Sync x86's syscalls_64.tbl and generic unistd.h to pick up clone3 and pidfd_open

Pull vdso timer fixes from Thomas Gleixner:
 "A series of commits to deal with the regression caused by the generic
  VDSO implementation.

  The usage of clock_gettime64() for 32bit compat fallback syscalls
  caused seccomp filters to kill innocent processes because they only
  allow clock_gettime().

  Handle the compat syscalls with clock_gettime() as before, which is
  not a functional problem for the VDSO as the legacy compat application
  interface is not y2038 safe anyway. It's just extra fallback code
  which needs to be implemented on every architecture.

  It's opt in for now so that it does not break the compile of already
  converted architectures in linux-next. Once these are fixed, the
  #ifdeffery goes away.

  So much for trying to be smart and reuse code..."

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  arm64: compat: vdso: Use legacy syscalls as fallback
  x86/vdso/32: Use 32bit syscall fallback
  lib/vdso/32: Provide legacy syscall fallbacks
  lib/vdso: Move fallback invocation to the callers
  lib/vdso/32: Remove inconsistent NULL pointer checks

Pull irq fixes from Thomas Gleixner:
 "A small bunch of fixes from the irqchip department:

   - Fix a couple of UAF on error paths (RZA1, GICv3 ITS)

   - Fix iMX GPCv2 trigger setting

   - Add missing of_node_put() on error path in MBIGEN

   - Add another bunch of /* fall-through */ to silence warnings"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/renesas-rza1: Fix an use-after-free in rza1_irqc_probe()
  irqchip/irq-imx-gpcv2: Forward irq type to parent
  irqchip/irq-mbigen: Add of_node_put() before return
  irqchip/gic-v3-its: Free unused vpt_page when alloc vpe table fail
  irqchip/gic-v3: Mark expected switch fall-through

Pull xfs fixes from Darrick Wong:

 - Avoid leaking kernel stack contents to userspace

 - Fix a potential null pointer dereference in the dabtree scrub code

* tag 'xfs-5.3-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: Fix possible null-pointer dereferences in xchk_da_btree_block_check_sibling()
  xfs: fix stack contents leakage in the v1 inumber ioctls

Merge misc fixes from Andrew Morton:
 "17 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  drivers/acpi/scan.c: document why we don't need the device_hotplug_lock
  memremap: move from kernel/ to mm/
  lib/test_meminit.c: use GFP_ATOMIC in RCU critical section
  asm-generic: fix -Wtype-limits compiler warnings
  cgroup: kselftest: relax fs_spec checks
  mm/memory_hotplug.c: remove unneeded return for void function
  mm/migrate.c: initialize pud_entry in migrate_vma()
  coredump: split pipe command whitespace before expanding template
  page flags: prioritize kasan bits over last-cpuid
  ubsan: build ubsan.c more conservatively
  kasan: remove clang version check for KASAN_STACK
  mm: compaction: avoid 100% CPU usage during compaction when a task is killed
  mm: migrate: fix reference check race between __find_get_block() and migration
  mm: vmscan: check if mem cgroup is disabled or not before calling memcg slab shrinker
  ocfs2: remove set but not used variable 'last_hash'
  Revert "kmemleak: allow to coexist with fault injection"
  kernel/signal.c: fix a kernel-doc markup

Pull RISC-V fixes from Paul Walmsley:
 "Three minor RISC-V-related changes for v5.3-rc3:

   - Add build ID to VDSO builds to avoid a double-free in perf when
     libelf isn't used

   - Align the RV64 defconfig to the output of "make savedefconfig" so
     subsequent defconfig patches don't get out of hand

   - Drop a superfluous DT property from the FU540 SoC DT data (since it
     must be already set in board data that includes it)"

* tag 'riscv/for-v5.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: defconfig: align RV64 defconfig to the output of "make savedefconfig"
  riscv: dts: fu540-c000: drop "timebase-frequency"
  riscv: Fix perf record without libelf support

Let's document why the lock is not needed in acpi_scan_init(), right now
this is not really obvious.

[akpm@linux-foundation.org: fix tpyo]
Link: http://lkml.kernel.org/r/20190731135306.31524-1-david@redhat.comSigned-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

memremap.c implements MM functionality for ZONE_DEVICE, so it really
should be in the mm/ directory, not the kernel/ one.

Link: http://lkml.kernel.org/r/20190722094143.18387-1-hch@lst.deSigned-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

kmalloc() shouldn't sleep while in RCU critical section, therefore use
GFP_ATOMIC instead of GFP_KERNEL.

The bug was spotted by the 0day kernel testing robot.

Link: http://lkml.kernel.org/r/20190725121703.210874-1-glider@google.com
Fixes: 7e659650cbda ("lib: introduce test_meminit module")
Signed-off-by: Alexander Potapenko <glider@google.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>