1. 18 Jul, 2018 2 commits
    • Sergei Shtylyov's avatar
      PCI: xgene: Fix I/O space page leak · 925652d0
      Sergei Shtylyov authored
      When testing the R-Car PCIe driver on the Condor board, if the PCIe PHY
      driver was left disabled, the kernel crashed with this BUG:
      
        kernel BUG at lib/ioremap.c:72!
        Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
        Modules linked in:
        CPU: 0 PID: 39 Comm: kworker/0:1 Not tainted 4.17.0-dirty #1092
        Hardware name: Renesas Condor board based on r8a77980 (DT)
        Workqueue: events deferred_probe_work_func
        pstate: 80000005 (Nzcv daif -PAN -UAO)
        pc : ioremap_page_range+0x370/0x3c8
        lr : ioremap_page_range+0x40/0x3c8
        sp : ffff000008da39e0
        x29: ffff000008da39e0 x28: 00e8000000000f07
        x27: ffff7dfffee00000 x26: 0140000000000000
        x25: ffff7dfffef00000 x24: 00000000000fe100
        x23: ffff80007b906000 x22: ffff000008ab8000
        x21: ffff000008bb1d58 x20: ffff7dfffef00000
        x19: ffff800009c30fb8 x18: 0000000000000001
        x17: 00000000000152d0 x16: 00000000014012d0
        x15: 0000000000000000 x14: 0720072007200720
        x13: 0720072007200720 x12: 0720072007200720
        x11: 0720072007300730 x10: 00000000000000ae
        x9 : 0000000000000000 x8 : ffff7dffff000000
        x7 : 0000000000000000 x6 : 0000000000000100
        x5 : 0000000000000000 x4 : 000000007b906000
        x3 : ffff80007c61a880 x2 : ffff7dfffeefffff
        x1 : 0000000040000000 x0 : 00e80000fe100f07
        Process kworker/0:1 (pid: 39, stack limit = 0x        (ptrval))
        Call trace:
         ioremap_page_range+0x370/0x3c8
         pci_remap_iospace+0x7c/0xac
         pci_parse_request_of_pci_ranges+0x13c/0x190
         rcar_pcie_probe+0x4c/0xb04
         platform_drv_probe+0x50/0xbc
         driver_probe_device+0x21c/0x308
         __device_attach_driver+0x98/0xc8
         bus_for_each_drv+0x54/0x94
         __device_attach+0xc4/0x12c
         device_initial_probe+0x10/0x18
         bus_probe_device+0x90/0x98
         deferred_probe_work_func+0xb0/0x150
         process_one_work+0x12c/0x29c
         worker_thread+0x200/0x3fc
         kthread+0x108/0x134
         ret_from_fork+0x10/0x18
        Code: f9004ba2 54000080 aa0003fb 17ffff48 (d4210000)
      
      It turned out that pci_remap_iospace() wasn't undone when the driver's
      probe failed, and since devm_phy_optional_get() returned -EPROBE_DEFER,
      the probe was retried, finally causing the BUG due to trying to remap
      already remapped pages.
      
      The X-Gene PCI controller driver has the same issue.
      Replace pci_remap_iospace() with the devm_ managed version so that the
      pages get unmapped automagically on any probe failure.
      
      Fixes: 5f6b6ccd ("PCI: xgene: Add APM X-Gene PCIe driver")
      Signed-off-by: default avatarSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
      [lorenzo.pieralisi@arm.com: updated the commit log]
      Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      925652d0
    • Sergei Shtylyov's avatar
      PCI: OF: Fix I/O space page leak · a5fb9fb0
      Sergei Shtylyov authored
      When testing the R-Car PCIe driver on the Condor board, if the PCIe PHY
      driver was left disabled, the kernel crashed with this BUG:
      
        kernel BUG at lib/ioremap.c:72!
        Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
        Modules linked in:
        CPU: 0 PID: 39 Comm: kworker/0:1 Not tainted 4.17.0-dirty #1092
        Hardware name: Renesas Condor board based on r8a77980 (DT)
        Workqueue: events deferred_probe_work_func
        pstate: 80000005 (Nzcv daif -PAN -UAO)
        pc : ioremap_page_range+0x370/0x3c8
        lr : ioremap_page_range+0x40/0x3c8
        sp : ffff000008da39e0
        x29: ffff000008da39e0 x28: 00e8000000000f07
        x27: ffff7dfffee00000 x26: 0140000000000000
        x25: ffff7dfffef00000 x24: 00000000000fe100
        x23: ffff80007b906000 x22: ffff000008ab8000
        x21: ffff000008bb1d58 x20: ffff7dfffef00000
        x19: ffff800009c30fb8 x18: 0000000000000001
        x17: 00000000000152d0 x16: 00000000014012d0
        x15: 0000000000000000 x14: 0720072007200720
        x13: 0720072007200720 x12: 0720072007200720
        x11: 0720072007300730 x10: 00000000000000ae
        x9 : 0000000000000000 x8 : ffff7dffff000000
        x7 : 0000000000000000 x6 : 0000000000000100
        x5 : 0000000000000000 x4 : 000000007b906000
        x3 : ffff80007c61a880 x2 : ffff7dfffeefffff
        x1 : 0000000040000000 x0 : 00e80000fe100f07
        Process kworker/0:1 (pid: 39, stack limit = 0x        (ptrval))
        Call trace:
         ioremap_page_range+0x370/0x3c8
         pci_remap_iospace+0x7c/0xac
         pci_parse_request_of_pci_ranges+0x13c/0x190
         rcar_pcie_probe+0x4c/0xb04
         platform_drv_probe+0x50/0xbc
         driver_probe_device+0x21c/0x308
         __device_attach_driver+0x98/0xc8
         bus_for_each_drv+0x54/0x94
         __device_attach+0xc4/0x12c
         device_initial_probe+0x10/0x18
         bus_probe_device+0x90/0x98
         deferred_probe_work_func+0xb0/0x150
         process_one_work+0x12c/0x29c
         worker_thread+0x200/0x3fc
         kthread+0x108/0x134
         ret_from_fork+0x10/0x18
        Code: f9004ba2 54000080 aa0003fb 17ffff48 (d4210000)
      
      It turned out that pci_remap_iospace() wasn't undone when the driver's
      probe failed, and since devm_phy_optional_get() returned -EPROBE_DEFER,
      the probe was retried, finally causing the BUG due to trying to remap
      already remapped pages.
      
      Introduce the devm_pci_remap_iospace() managed API and replace the
      pci_remap_iospace() call with it to fix the bug.
      
      Fixes: dbf9826d ("PCI: generic: Convert to DT resource parsing API")
      Signed-off-by: default avatarSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
      [lorenzo.pieralisi@arm.com: split commit/updated the commit log]
      Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      a5fb9fb0
  2. 09 Jul, 2018 2 commits
  3. 29 Jun, 2018 9 commits
  4. 26 Jun, 2018 3 commits
  5. 16 Jun, 2018 8 commits
    • Linus Torvalds's avatar
      Linux 4.18-rc1 · ce397d21
      Linus Torvalds authored
      ce397d21
    • Linus Torvalds's avatar
      Merge tag 'for-linus-20180616' of git://git.kernel.dk/linux-block · 265c5596
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "A collection of fixes that should go into -rc1. This contains:
      
         - bsg_open vs bsg_unregister race fix (Anatoliy)
      
         - NVMe pull request from Christoph, with fixes for regressions in
           this window, FC connect/reconnect path code unification, and a
           trace point addition.
      
         - timeout fix (Christoph)
      
         - remove a few unused functions (Christoph)
      
         - blk-mq tag_set reinit fix (Roman)"
      
      * tag 'for-linus-20180616' of git://git.kernel.dk/linux-block:
        bsg: fix race of bsg_open and bsg_unregister
        block: remov blk_queue_invalidate_tags
        nvme-fabrics: fix and refine state checks in __nvmf_check_ready
        nvme-fabrics: handle the admin-only case properly in nvmf_check_ready
        nvme-fabrics: refactor queue ready check
        blk-mq: remove blk_mq_tagset_iter
        nvme: remove nvme_reinit_tagset
        nvme-fc: fix nulling of queue data on reconnect
        nvme-fc: remove reinit_request routine
        blk-mq: don't time out requests again that are in the timeout handler
        nvme-fc: change controllers first connect to use reconnect path
        nvme: don't rely on the changed namespace list log
        nvmet: free smart-log buffer after use
        nvme-rdma: fix error flow during mapping request data
        nvme: add bio remapping tracepoint
        nvme: fix NULL pointer dereference in nvme_init_subsystem
        blk-mq: reinit q->tag_set_list entry only after grace period
      265c5596
    • Linus Torvalds's avatar
      Merge tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimental · 5e7b9212
      Linus Torvalds authored
      Pull documentation fixes from Mauro Carvalho Chehab:
       "This solves a series of broken links for files under Documentation,
        and improves a script meant to detect such broken links (see
        scripts/documentation-file-ref-check).
      
        The changes on this series are:
      
         - can.rst: fix a footnote reference;
      
         - crypto_engine.rst: Fix two parsing warnings;
      
         - Fix a lot of broken references to Documentation/*;
      
         - improve the scripts/documentation-file-ref-check script, in order
           to help detecting/fixing broken references, preventing
           false-positives.
      
        After this patch series, only 33 broken references to doc files are
        detected by scripts/documentation-file-ref-check"
      
      * tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimental: (26 commits)
        fix a series of Documentation/ broken file name references
        Documentation: rstFlatTable.py: fix a broken reference
        ABI: sysfs-devices-system-cpu: remove a broken reference
        devicetree: fix a series of wrong file references
        devicetree: fix name of pinctrl-bindings.txt
        devicetree: fix some bindings file names
        MAINTAINERS: fix location of DT npcm files
        MAINTAINERS: fix location of some display DT bindings
        kernel-parameters.txt: fix pointers to sound parameters
        bindings: nvmem/zii: Fix location of nvmem.txt
        docs: Fix more broken references
        scripts/documentation-file-ref-check: check tools/*/Documentation
        scripts/documentation-file-ref-check: get rid of false-positives
        scripts/documentation-file-ref-check: hint: dash or underline
        scripts/documentation-file-ref-check: add a fix logic for DT
        scripts/documentation-file-ref-check: accept more wildcards at filenames
        scripts/documentation-file-ref-check: fix help message
        media: max2175: fix location of driver's companion documentation
        media: v4l: fix broken video4linux docs locations
        media: dvb: point to the location of the old README.dvb-usb file
        ...
      5e7b9212
    • Linus Torvalds's avatar
      Merge tag 'fsnotify_for_v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs · dbb2816f
      Linus Torvalds authored
      Pull fsnotify updates from Jan Kara:
       "fsnotify cleanups unifying handling of different watch types.
      
        This is the shortened fsnotify series from Amir with the last five
        patches pulled out. Amir has modified those patches to not change
        struct inode but obviously it's too late for those to go into this
        merge window"
      
      * tag 'fsnotify_for_v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
        fsnotify: add fsnotify_add_inode_mark() wrappers
        fanotify: generalize fanotify_should_send_event()
        fsnotify: generalize send_to_group()
        fsnotify: generalize iteration of marks by object type
        fsnotify: introduce marks iteration helpers
        fsnotify: remove redundant arguments to handle_event()
        fsnotify: use type id to identify connector object type
      dbb2816f
    • Linus Torvalds's avatar
      Merge tag 'fbdev-v4.18' of git://github.com/bzolnier/linux · 644f2639
      Linus Torvalds authored
      Pull fbdev updates from Bartlomiej Zolnierkiewicz:
       "There is nothing really major here, few small fixes, some cleanups and
        dead drivers removal:
      
         - mark omapfb drivers as orphans in MAINTAINERS file (Tomi Valkeinen)
      
         - add missing module license tags to omap/omapfb driver (Arnd
           Bergmann)
      
         - add missing GPIOLIB dependendy to omap2/omapfb driver (Arnd
           Bergmann)
      
         - convert savagefb, aty128fb & radeonfb drivers to use msleep & co.
           (Jia-Ju Bai)
      
         - allow COMPILE_TEST build for viafb driver (media part was reviewed
           by media subsystem Maintainer)
      
         - remove unused MERAM support from sh_mobile_lcdcfb and shmob-drm
           drivers (drm parts were acked by shmob-drm driver Maintainer)
      
         - remove unused auo_k190xfb drivers
      
         - misc cleanups (Souptick Joarder, Wolfram Sang, Markus Elfring, Andy
           Shevchenko, Colin Ian King)"
      
      * tag 'fbdev-v4.18' of git://github.com/bzolnier/linux: (26 commits)
        fb_omap2: add gpiolib dependency
        video/omap: add module license tags
        MAINTAINERS: make omapfb orphan
        video: fbdev: pxafb: match_string() conversion fixup
        video: fbdev: nvidia: fix spelling mistake: "scaleing" -> "scaling"
        video: fbdev: fix spelling mistake: "frambuffer" -> "framebuffer"
        video: fbdev: pxafb: Convert to use match_string() helper
        video: fbdev: via: allow COMPILE_TEST build
        video: fbdev: remove unused sh_mobile_meram driver
        drm: shmobile: remove unused MERAM support
        video: fbdev: sh_mobile_lcdcfb: remove unused MERAM support
        video: fbdev: remove unused auo_k190xfb drivers
        video: omap: Improve a size determination in omapfb_do_probe()
        video: sm501fb: Improve a size determination in sm501fb_probe()
        video: fbdev-MMP: Improve a size determination in path_init()
        video: fbdev-MMP: Delete an error message for a failed memory allocation in two functions
        video: auo_k190x: Delete an error message for a failed memory allocation in auok190x_common_probe()
        video: sh_mobile_lcdcfb: Delete an error message for a failed memory allocation in two functions
        video: sh_mobile_meram: Delete an error message for a failed memory allocation in sh_mobile_meram_probe()
        video: fbdev: sh_mobile_meram: Drop SUPERH platform dependency
        ...
      644f2639
    • Linus Torvalds's avatar
      Merge branch 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · 35773c93
      Linus Torvalds authored
      Pull AFS updates from Al Viro:
       "Assorted AFS stuff - ended up in vfs.git since most of that consists
        of David's AFS-related followups to Christoph's procfs series"
      
      * 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        afs: Optimise callback breaking by not repeating volume lookup
        afs: Display manually added cells in dynamic root mount
        afs: Enable IPv6 DNS lookups
        afs: Show all of a server's addresses in /proc/fs/afs/servers
        afs: Handle CONFIG_PROC_FS=n
        proc: Make inline name size calculation automatic
        afs: Implement network namespacing
        afs: Mark afs_net::ws_cell as __rcu and set using rcu functions
        afs: Fix a Sparse warning in xdr_decode_AFSFetchStatus()
        proc: Add a way to make network proc files writable
        afs: Rearrange fs/afs/proc.c to remove remaining predeclarations.
        afs: Rearrange fs/afs/proc.c to move the show routines up
        afs: Rearrange fs/afs/proc.c by moving fops and open functions down
        afs: Move /proc management functions to the end of the file
      35773c93
    • Linus Torvalds's avatar
      Merge branch 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · 29d6849d
      Linus Torvalds authored
      Pull compat updates from Al Viro:
       "Some biarch patches - getting rid of assorted (mis)uses of
        compat_alloc_user_space().
      
        Not much in that area this cycle..."
      
      * 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        orangefs: simplify compat ioctl handling
        signalfd: lift sigmask copyin and size checks to callers of do_signalfd4()
        vmsplice(): lift importing iovec into vmsplice(2) and compat counterpart
      29d6849d
    • Linus Torvalds's avatar
      Merge branch 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · a5b729ea
      Linus Torvalds authored
      Pull aio fixes from Al Viro:
       "Assorted AIO followups and fixes"
      
      * 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        eventpoll: switch to ->poll_mask
        aio: only return events requested in poll_mask() for IOCB_CMD_POLL
        eventfd: only return events requested in poll_mask()
        aio: mark __aio_sigset::sigmask const
      a5b729ea
  6. 15 Jun, 2018 16 commits