1. 21 Jun, 2020 7 commits
    • Linus Torvalds's avatar
      Merge tag 'kbuild-fixes-v5.8' of... · be9160a9
      Linus Torvalds authored
      Merge tag 'kbuild-fixes-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
      
      Pull Kbuild fixes from Masahiro Yamada:
      
       - fix -gz=zlib compiler option test for CONFIG_DEBUG_INFO_COMPRESSED
      
       - improve cc-option in scripts/Kbuild.include to clean up temp files
      
       - improve cc-option in scripts/Kconfig.include for more reliable
         compile option test
      
       - do not copy modules.builtin by 'make install' because it would break
         existing systems
      
       - use 'userprogs' syntax for watch_queue sample
      
      * tag 'kbuild-fixes-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
        samples: watch_queue: build sample program for target architecture
        Revert "Makefile: install modules.builtin even if CONFIG_MODULES=n"
        scripts: Fix typo in headers_install.sh
        kconfig: unify cc-option and as-option
        kbuild: improve cc-option to clean up all temporary files
        Makefile: Improve compressed debug info support detection
      be9160a9
    • Linus Torvalds's avatar
      Merge tag 'powerpc-5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · 75613939
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
      
       - One fix for the interrupt rework we did last release which broke
         KVM-PR
      
       - Three commits fixing some fallout from the READ_ONCE() changes
         interacting badly with our 8xx 16K pages support, which uses a pte_t
         that is a structure of 4 actual PTEs
      
       - A cleanup of the 8xx pte_update() to use the newly added pmd_off()
      
       - A fix for a crash when handling an oops if CONFIG_DEBUG_VIRTUAL is
         enabled
      
       - A minor fix for the SPU syscall generation
      
      Thanks to Aneesh Kumar K.V, Christian Zigotzky, Christophe Leroy, Mike
      Rapoport, Nicholas Piggin.
      
      * tag 'powerpc-5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        powerpc/8xx: Provide ptep_get() with 16k pages
        mm: Allow arches to provide ptep_get()
        mm/gup: Use huge_ptep_get() in gup_hugepte()
        powerpc/syscalls: Use the number when building SPU syscall table
        powerpc/8xx: use pmd_off() to access a PMD entry in pte_update()
        powerpc/64s: Fix KVM interrupt using wrong save area
        powerpc: Fix kernel crash in show_instructions() w/DEBUG_VIRTUAL
      75613939
    • Linus Torvalds's avatar
      Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 · 93bbca27
      Linus Torvalds authored
      Pull crypto fixes from Herbert Xu:
      
       - NULL dereference in octeontx
      
       - PM reference imbalance in ks-sa
      
       - deadlock in crypto manager
      
       - memory leak in drbg
      
       - missing socket limit check on receive SG list size in algif_skcipher
      
       - typos in caam
      
       - warnings in ccp and hisilicon
      
      * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
        crypto: drbg - always try to free Jitter RNG instance
        crypto: marvell/octeontx - Fix a potential NULL dereference
        crypto: algboss - don't wait during notifier callback
        crypto: caam - fix typos
        crypto: ccp - Fix sparse warnings in sev-dev
        crypto: hisilicon - Cap block size at 2^31
        crypto: algif_skcipher - Cap recv SG list at ctx->used
        hwrng: ks-sa - Fix runtime PM imbalance on error
      93bbca27
    • Masahiro Yamada's avatar
      samples: watch_queue: build sample program for target architecture · 214377e9
      Masahiro Yamada authored
      This userspace program includes UAPI headers exported to usr/include/.
      'make headers' always works for the target architecture (i.e. the same
      architecture as the kernel), so the sample program should be built for
      the target as well. Kbuild now supports 'userprogs' for that.
      
      I also guarded the CONFIG option by 'depends on CC_CAN_LINK' because
      $(CC) may not provide libc.
      Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
      214377e9
    • Masahiro Yamada's avatar
      Revert "Makefile: install modules.builtin even if CONFIG_MODULES=n" · 2c6d9636
      Masahiro Yamada authored
      This reverts commit e0b250b5,
      which broke build systems that need to install files to a certain
      path, but do not set INSTALL_MOD_PATH when invoking 'make install'.
      
        $ make INSTALL_PATH=/tmp/destdir install
        mkdir: cannot create directory ‘/lib/modules/5.8.0-rc1+/’: Permission denied
        Makefile:1342: recipe for target '_builtin_inst_' failed
        make: *** [_builtin_inst_] Error 1
      
      While modules.builtin is useful also for CONFIG_MODULES=n, this change
      in the behavior is quite unexpected. Maybe "make modules_install"
      can install modules.builtin irrespective of CONFIG_MODULES as Jonas
      originally suggested.
      
      Anyway, that commit should be reverted ASAP.
      Reported-by: default avatarDouglas Anderson <dianders@chromium.org>
      Reported-by: default avatarGuenter Roeck <linux@roeck-us.net>
      Cc: Jonas Karlman <jonas@kwiboo.se>
      Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
      Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
      Tested-by: default avatarGuenter Roeck <linux@roeck-us.net>
      2c6d9636
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · 64677779
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "One minor fix and two patches reworking the ata dma drain for the
        !CONFIG_LIBATA case. The latter is a 5.7 regression fix"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        scsi: Wire up ata_scsi_dma_need_drain for SAS HBA drivers
        scsi: libata: Provide an ata_scsi_dma_need_drain stub for !CONFIG_ATA
        scsi: ufs-bsg: Fix runtime PM imbalance on error
      64677779
    • Linus Torvalds's avatar
      Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux · a5c6a1f0
      Linus Torvalds authored
      Pull i2c fixes from Wolfram Sang:
      
       - a small collection of remaining API conversion patches (all acked)
         which allow to finally remove the deprecated API
      
       - some documentation fixes and a MAINTAINERS addition
      
      * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
        MAINTAINERS: Add robert and myself as qcom i2c cci maintainers
        i2c: smbus: Fix spelling mistake in the comments
        Documentation/i2c: SMBus start signal is S not A
        i2c: remove deprecated i2c_new_device API
        Documentation: media: convert to use i2c_new_client_device()
        video: backlight: tosa_lcd: convert to use i2c_new_client_device()
        x86/platform/intel-mid: convert to use i2c_new_client_device()
        drm: encoder_slave: use new I2C API
        drm: encoder_slave: fix refcouting error for modules
      a5c6a1f0
  2. 20 Jun, 2020 10 commits
    • Linus Torvalds's avatar
      Merge tag 'trace-v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace · 8b6ddd10
      Linus Torvalds authored
      Pull tracing fixes from Steven Rostedt:
      
       - Have recordmcount work with > 64K sections (to support LTO)
      
       - kprobe RCU fixes
      
       - Correct a kprobe critical section with missing mutex
      
       - Remove redundant arch_disarm_kprobe() call
      
       - Fix lockup when kretprobe triggers within kprobe_flush_task()
      
       - Fix memory leak in fetch_op_data operations
      
       - Fix sleep in atomic in ftrace trace array sample code
      
       - Free up memory on failure in sample trace array code
      
       - Fix incorrect reporting of function_graph fields in format file
      
       - Fix quote within quote parsing in bootconfig
      
       - Fix return value of bootconfig tool
      
       - Add testcases for bootconfig tool
      
       - Fix maybe uninitialized warning in ftrace pid file code
      
       - Remove unused variable in tracing_iter_reset()
      
       - Fix some typos
      
      * tag 'trace-v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
        ftrace: Fix maybe-uninitialized compiler warning
        tools/bootconfig: Add testcase for show-command and quotes test
        tools/bootconfig: Fix to return 0 if succeeded to show the bootconfig
        tools/bootconfig: Fix to use correct quotes for value
        proc/bootconfig: Fix to use correct quotes for value
        tracing: Remove unused event variable in tracing_iter_reset
        tracing/probe: Fix memleak in fetch_op_data operations
        trace: Fix typo in allocate_ftrace_ops()'s comment
        tracing: Make ftrace packed events have align of 1
        sample-trace-array: Remove trace_array 'sample-instance'
        sample-trace-array: Fix sleeping function called from invalid context
        kretprobe: Prevent triggering kretprobe from within kprobe_flush_task
        kprobes: Remove redundant arch_disarm_kprobe() call
        kprobes: Fix to protect kick_kprobe_optimizer() by kprobe_mutex
        kprobes: Use non RCU traversal APIs on kprobe_tables if possible
        kprobes: Suppress the suspicious RCU warning on kprobes
        recordmcount: support >64k sections
      8b6ddd10
    • Linus Torvalds's avatar
      Merge tag 'libnvdimm-for-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm · eede2b9b
      Linus Torvalds authored
      Pull libnvdimm updates from Dan Williams:
       "A feature (papr_scm health retrieval) and a fix (sysfs attribute
        visibility) for v5.8.
      
        Vaibhav explains in the merge commit below why missing v5.8 would be
        painful and I agreed to try a -rc2 pull because only cosmetics kept
        this out of -rc1 and his initial versions were posted in more than
        enough time for v5.8 consideration:
      
         'These patches are tied to specific features that were committed to
          customers in upcoming distros releases (RHEL and SLES) whose
          time-lines are tied to 5.8 kernel release.
      
          Being able to track the health of an nvdimm is critical for our
          customers that are running workloads leveraging papr-scm nvdimms.
          Missing the 5.8 kernel would mean missing the distro timelines and
          shifting forward the availability of this feature in distro kernels
          by at least 6 months'
      
        Summary:
      
         - Fix the visibility of the region 'align' attribute.
      
           The new unit tests for region alignment handling caught a corner
           case where the alignment cannot be specified if the region is
           converted from static to dynamic provisioning at runtime.
      
         - Add support for device health retrieval for the persistent memory
           supported by the papr_scm driver.
      
           This includes both the standard sysfs "health flags" that the nfit
           persistent memory driver publishes and a mechanism for the ndctl
           tool to retrieve a health-command payload"
      
      * tag 'libnvdimm-for-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
        nvdimm/region: always show the 'align' attribute
        powerpc/papr_scm: Implement support for PAPR_PDSM_HEALTH
        ndctl/papr_scm,uapi: Add support for PAPR nvdimm specific methods
        powerpc/papr_scm: Improve error logging and handling papr_scm_ndctl()
        powerpc/papr_scm: Fetch nvdimm health information from PHYP
        seq_buf: Export seq_buf_printf
        powerpc: Document details on H_SCM_HEALTH hcall
      eede2b9b
    • Linus Torvalds's avatar
      Merge tag 's390-5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · 1566feea
      Linus Torvalds authored
      Pull s390 fixes from Vasily Gorbik:
      
       - a few ptrace fixes mostly for strace and seccomp_bpf kernel tests
         findings
      
       - cleanup unused pm callbacks in virtio ccw
      
       - replace kmalloc + memset with kzalloc in crypto
      
       - use $(LD) for vDSO linkage to make clang happy
      
       - fix vDSO clock_getres() to preserve the same behaviour as
         posix_get_hrtimer_res()
      
       - fix workqueue cpumask warning when NUMA=n and nr_node_ids=2
      
       - reduce SLSB writes during input processing, improve warnings and
         cleanup qdio_data usage in qdio
      
       - a few fixes to use scnprintf() instead of snprintf()
      
      * tag 's390-5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
        s390: fix syscall_get_error for compat processes
        s390/qdio: warn about unexpected SLSB states
        s390/qdio: clean up usage of qdio_data
        s390/numa: let NODES_SHIFT depend on NEED_MULTIPLE_NODES
        s390/vdso: fix vDSO clock_getres()
        s390/vdso: Use $(LD) instead of $(CC) to link vDSO
        s390/protvirt: use scnprintf() instead of snprintf()
        s390: use scnprintf() in sys_##_prefix##_##_name##_show
        s390/crypto: use scnprintf() instead of snprintf()
        s390/zcrypt: use kzalloc
        s390/virtio: remove unused pm callbacks
        s390/qdio: reduce SLSB writes during Input Queue processing
        selftests/seccomp: s390 shares the syscall and return value register
        s390/ptrace: fix setting syscall number
        s390/ptrace: pass invalid syscall numbers to tracing
        s390/ptrace: return -ENOSYS when invalid syscall is supplied
        s390/seccomp: pass syscall arguments via seccomp_data
        s390/qdio: fine-tune SLSB update
      1566feea
    • Linus Torvalds's avatar
      Merge tag 'riscv-for-linus-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux · 7fdfbe08
      Linus Torvalds authored
      Pull RISC-V fixes from Palmer Dabbelt:
      
       - a workaround for a compiler surprise related to the "r" inline
         assembly that allows LLVM to boot.
      
       - a fix to avoid WX-only mappings, which the ISA does not allow. While
         this probably manifests in many ways, the bug was found in stress-ng.
      
       - a missing lock in set_direct_map_*(), which due to a recent lockdep
         change started asserting.
      
      * tag 'riscv-for-linus-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
        RISC-V: Acquire mmap lock before invoking walk_page_range
        RISC-V: Don't allow write+exec only page mapping request in mmap
        riscv/atomic: Fix sign extension for RV64I
      7fdfbe08
    • Linus Torvalds's avatar
      Merge tag 'linux-kselftest-5.8-rc2' of... · 27c27605
      Linus Torvalds authored
      Merge tag 'linux-kselftest-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
      
      Pull kselftest cleanups from Shuah Khan:
      
       - ftrace "requires:" list for simplifying and unifying requirement
         checks for each test case, adding "requires:" line instead of
         checking required ftrace interfaces in each test case.
      
       - a minor spelling correction patch
      
      * tag 'linux-kselftest-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
        selftests/ftrace: Support ":README" suffix for requires
        selftests/ftrace: Support ":tracer" suffix for requires
        selftests/ftrace: Convert check_filter_file() with requires list
        selftests/ftrace: Convert required interface checks into requires list
        selftests/ftrace: Add "requires:" list support
        selftests/ftrace: Return unsupported for the unconfigured features
        selftests/ftrace: Allow ":" in description
        tools: testing: ftrace: trigger: fix spelling mistake
      27c27605
    • David Howells's avatar
      afs: Fix hang on rmmod due to outstanding timer · 5481fc6e
      David Howells authored
      The fileserver probe timer, net->fs_probe_timer, isn't cancelled when
      the kafs module is being removed and so the count it holds on
      net->servers_outstanding doesn't get dropped..
      
      This causes rmmod to wait forever.  The hung process shows a stack like:
      
      	afs_purge_servers+0x1b5/0x23c [kafs]
      	afs_net_exit+0x44/0x6e [kafs]
      	ops_exit_list+0x72/0x93
      	unregister_pernet_operations+0x14c/0x1ba
      	unregister_pernet_subsys+0x1d/0x2a
      	afs_exit+0x29/0x6f [kafs]
      	__do_sys_delete_module.isra.0+0x1a2/0x24b
      	do_syscall_64+0x51/0x95
      	entry_SYSCALL_64_after_hwframe+0x44/0xa9
      
      Fix this by:
      
       (1) Attempting to cancel the probe timer and, if successful, drop the
           count that the timer was holding.
      
       (2) Make the timer function just drop the count and not schedule the
           prober if the afs portion of net namespace is being destroyed.
      
      Also, whilst we're at it, make the following changes:
      
       (3) Initialise net->servers_outstanding to 1 and decrement it before
           waiting on it so that it doesn't generate wake up events by being
           decremented to 0 until we're cleaning up.
      
       (4) Switch the atomic_dec() on ->servers_outstanding for ->fs_timer in
           afs_purge_servers() to use the helper function for that.
      
      Fixes: f6cbb368 ("afs: Actively poll fileservers to maintain NAT or firewall openings")
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      5481fc6e
    • David Howells's avatar
      afs: Fix afs_do_lookup() to call correct fetch-status op variant · f8ea5c7b
      David Howells authored
      Fix afs_do_lookup()'s fallback case for when FS.InlineBulkStatus isn't
      supported by the server.
      
      In the fallback, it calls FS.FetchStatus for the specific vnode it's
      meant to be looking up.  Commit b6489a49 broke this by renaming one
      of the two identically-named afs_fetch_status_operation descriptors to
      something else so that one of them could be made non-static.  The site
      that used the renamed one, however, wasn't renamed and didn't produce
      any warning because the other was declared in a header.
      
      Fix this by making afs_do_lookup() use the renamed variant.
      
      Note that there are two variants of the success method because one is
      called from ->lookup() where we may or may not have an inode, but can't
      call iget until after we've talked to the server - whereas the other is
      called from within iget where we have an inode, but it may or may not be
      initialised.
      
      The latter variant expects there to be an inode, but because it's being
      called from there former case, there might not be - resulting in an oops
      like the following:
      
        BUG: kernel NULL pointer dereference, address: 00000000000000b0
        ...
        RIP: 0010:afs_fetch_status_success+0x27/0x7e
        ...
        Call Trace:
          afs_wait_for_operation+0xda/0x234
          afs_do_lookup+0x2fe/0x3c1
          afs_lookup+0x3c5/0x4bd
          __lookup_slow+0xcd/0x10f
          walk_component+0xa2/0x10c
          path_lookupat.isra.0+0x80/0x110
          filename_lookup+0x81/0x104
          vfs_statx+0x76/0x109
          __do_sys_newlstat+0x39/0x6b
          do_syscall_64+0x4c/0x78
          entry_SYSCALL_64_after_hwframe+0x44/0xa9
      
      Fixes: b6489a49 ("afs: Fix silly rename")
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      f8ea5c7b
    • Christophe Leroy's avatar
      powerpc/8xx: Provide ptep_get() with 16k pages · c0e1c8c2
      Christophe Leroy authored
      READ_ONCE() now enforces atomic read, which leads to:
      
        CC      mm/gup.o
      In file included from ./include/linux/kernel.h:11:0,
                       from mm/gup.c:2:
      In function 'gup_hugepte.constprop',
          inlined from 'gup_huge_pd.isra.79' at mm/gup.c:2465:8:
      ./include/linux/compiler.h:392:38: error: call to '__compiletime_assert_222' declared with attribute error: Unsupported access size for {READ,WRITE}_ONCE().
        _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                                            ^
      ./include/linux/compiler.h:373:4: note: in definition of macro '__compiletime_assert'
          prefix ## suffix();    \
          ^
      ./include/linux/compiler.h:392:2: note: in expansion of macro '_compiletime_assert'
        _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
        ^
      ./include/linux/compiler.h:405:2: note: in expansion of macro 'compiletime_assert'
        compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
        ^
      ./include/linux/compiler.h:291:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
        compiletime_assert_rwonce_type(x);    \
        ^
      mm/gup.c:2428:8: note: in expansion of macro 'READ_ONCE'
        pte = READ_ONCE(*ptep);
              ^
      In function 'gup_get_pte',
          inlined from 'gup_pte_range' at mm/gup.c:2228:9,
          inlined from 'gup_pmd_range' at mm/gup.c:2613:15,
          inlined from 'gup_pud_range' at mm/gup.c:2641:15,
          inlined from 'gup_p4d_range' at mm/gup.c:2666:15,
          inlined from 'gup_pgd_range' at mm/gup.c:2694:15,
          inlined from 'internal_get_user_pages_fast' at mm/gup.c:2795:3:
      ./include/linux/compiler.h:392:38: error: call to '__compiletime_assert_219' declared with attribute error: Unsupported access size for {READ,WRITE}_ONCE().
        _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                                            ^
      ./include/linux/compiler.h:373:4: note: in definition of macro '__compiletime_assert'
          prefix ## suffix();    \
          ^
      ./include/linux/compiler.h:392:2: note: in expansion of macro '_compiletime_assert'
        _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
        ^
      ./include/linux/compiler.h:405:2: note: in expansion of macro 'compiletime_assert'
        compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
        ^
      ./include/linux/compiler.h:291:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
        compiletime_assert_rwonce_type(x);    \
        ^
      mm/gup.c:2199:9: note: in expansion of macro 'READ_ONCE'
        return READ_ONCE(*ptep);
               ^
      make[2]: *** [mm/gup.o] Error 1
      
      Define ptep_get() on 8xx when using 16k pages.
      
      Fixes: 9e343b46 ("READ_ONCE: Enforce atomicity for {READ,WRITE}_ONCE() memory accesses")
      Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
      Acked-by: default avatarWill Deacon <will@kernel.org>
      Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      Link: https://lore.kernel.org/r/341688399c1b102756046d19ea6ce39db1ae4742.1592225558.git.christophe.leroy@csgroup.eu
      c0e1c8c2
    • Christophe Leroy's avatar
      mm: Allow arches to provide ptep_get() · 481e980a
      Christophe Leroy authored
      Since commit 9e343b46 ("READ_ONCE: Enforce atomicity for
      {READ,WRITE}_ONCE() memory accesses") it is not possible anymore to
      use READ_ONCE() to access complex page table entries like the one
      defined for powerpc 8xx with 16k size pages.
      
      Define a ptep_get() helper that architectures can override instead
      of performing a READ_ONCE() on the page table entry pointer.
      
      Fixes: 9e343b46 ("READ_ONCE: Enforce atomicity for {READ,WRITE}_ONCE() memory accesses")
      Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
      Acked-by: default avatarWill Deacon <will@kernel.org>
      Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      Link: https://lore.kernel.org/r/087fa12b6e920e32315136b998aa834f99242695.1592225558.git.christophe.leroy@csgroup.eu
      481e980a
    • Christophe Leroy's avatar
      mm/gup: Use huge_ptep_get() in gup_hugepte() · 55ca2263
      Christophe Leroy authored
      gup_hugepte() reads hugepage table entries, it can't read
      them directly, huge_ptep_get() must be used.
      
      Fixes: 9e343b46 ("READ_ONCE: Enforce atomicity for {READ,WRITE}_ONCE() memory accesses")
      Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
      Acked-by: default avatarWill Deacon <will@kernel.org>
      Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      Link: https://lore.kernel.org/r/ffc3714334c3bfaca6f13788ad039e8759ae413f.1592225558.git.christophe.leroy@csgroup.eu
      55ca2263
  3. 19 Jun, 2020 21 commits
  4. 18 Jun, 2020 2 commits
    • Dave Airlie's avatar
      Merge tag 'drm-intel-fixes-2020-06-18' of... · 7ac98ff0
      Dave Airlie authored
      Merge tag 'drm-intel-fixes-2020-06-18' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
      
      - Fix for timeslicing and virtual engines/unpremptable requests
        (+ 1 dependency patch)
      - Fixes into TypeC register programming and interrupt storm detecting
      - Disable DIP on MST ports with the transcoder clock still on
      - Avoid missing GT workarounds at reset for HSW and older gens
      - Fix for unwinding multiple requests missing force restore
      - Fix encoder type check for DDI vswing sequence
      - Build warning fixes
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20200618124659.GA12342@jlahtine-desk.ger.corp.intel.com
      7ac98ff0
    • Linus Torvalds's avatar
      Merge branch 'hch' (maccess patches from Christoph Hellwig) · 5e857ce6
      Linus Torvalds authored
      Merge non-faulting memory access cleanups from Christoph Hellwig:
       "Andrew and I decided to drop the patches implementing your suggested
        rename of the probe_kernel_* and probe_user_* helpers from -mm as
        there were way to many conflicts.
      
        After -rc1 might be a good time for this as all the conflicts are
        resolved now"
      
      This also adds a type safety checking patch on top of the renaming
      series to make the subtle behavioral difference between 'get_user()' and
      'get_kernel_nofault()' less potentially dangerous and surprising.
      
      * emailed patches from Christoph Hellwig <hch@lst.de>:
        maccess: make get_kernel_nofault() check for minimal type compatibility
        maccess: rename probe_kernel_address to get_kernel_nofault
        maccess: rename probe_user_{read,write} to copy_{from,to}_user_nofault
        maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault
      5e857ce6