1. 13 Sep, 2019 4 commits
  2. 05 Sep, 2019 13 commits
    • Al Viro's avatar
      make shmem_fill_super() static · 7e30d2a5
      Al Viro authored
      ... have callers use shmem_mount()
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      7e30d2a5
    • Al Viro's avatar
      make ramfs_fill_super() static · df024502
      Al Viro authored
      all users should just call ramfs_mount()
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      df024502
    • Al Viro's avatar
      devtmpfs: don't mix {ramfs,shmem}_fill_super() with mount_single() · d401727e
      Al Viro authored
      Create an internal-only type matching the current devtmpfs, never
      register it and have one kernel-internal mount done.  That thing
      gets mounted only once, so it is free to use mount_nodev().
      
      The "public" devtmpfs (the one we do register, and only after
      the internal mount of the real thing is done) simply gets and
      returns an extra reference to the internal superblock.
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      d401727e
    • David Howells's avatar
      vfs: Convert squashfs to use the new mount API · 5a2be128
      David Howells authored
      Convert the squashfs filesystem to the new internal mount API as the old
      one will be obsoleted and removed.  This allows greater flexibility in
      communication of mount parameters between userspace, the VFS and the
      filesystem.
      
      See Documentation/filesystems/mount_api.txt for more information.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      cc: Phillip Lougher <phillip@squashfs.org.uk>
      cc: squashfs-devel@lists.sourceforge.net
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      5a2be128
    • David Howells's avatar
      mtd: Kill mount_mtd() · 6d56e418
      David Howells authored
      Kill mount_mtd() as it has now been replaced by vfs_get_mtd_super() in the
      new mount API and nothing now uses it.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      cc: David Woodhouse <dwmw2@infradead.org>
      cc: Brian Norris <computersforpeace@gmail.com>
      cc: Boris Brezillon <bbrezillon@kernel.org>
      cc: Marek Vasut <marek.vasut@gmail.com>
      cc: Richard Weinberger <richard@nod.at>
      cc: linux-mtd@lists.infradead.org
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      6d56e418
    • David Howells's avatar
      vfs: Convert jffs2 to use the new mount API · ec10a24f
      David Howells authored
      Convert the jffs2 filesystem to the new internal mount API as the old
      one will be obsoleted and removed.  This allows greater flexibility in
      communication of mount parameters between userspace, the VFS and the
      filesystem.
      
      See Documentation/filesystems/mount_api.txt for more information.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      cc: David Woodhouse <dwmw2@infradead.org>
      cc: linux-mtd@lists.infradead.org
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      ec10a24f
    • David Howells's avatar
      vfs: Convert cramfs to use the new mount API · 74f78fc5
      David Howells authored
      Convert the cramfs filesystem to the new internal mount API as the old
      one will be obsoleted and removed.  This allows greater flexibility in
      communication of mount parameters between userspace, the VFS and the
      filesystem.
      
      See Documentation/filesystems/mount_api.txt for more information.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Tested-by: default avatarNicolas Pitre <nico@fluxnic.net>
      Acked-by: default avatarNicolas Pitre <nico@fluxnic.net>
      cc: linux-mtd@lists.infradead.org
      cc: linux-block@vger.kernel.org
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      74f78fc5
    • David Howells's avatar
      vfs: Convert romfs to use the new mount API · b9417599
      David Howells authored
      Convert the romfs filesystem to the new internal mount API as the old
      one will be obsoleted and removed.  This allows greater flexibility in
      communication of mount parameters between userspace, the VFS and the
      filesystem.
      
      See Documentation/filesystems/mount_api.txt for more information.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      cc: linux-mtd@lists.infradead.org
      cc: linux-block@vger.kernel.org
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      b9417599
    • David Howells's avatar
      vfs: Add a single-or-reconfig keying to vfs_get_super() · 43ce4c1f
      David Howells authored
      Add an additional keying mode to vfs_get_super() to indicate that only a
      single superblock should exist in the system, and that, if it does, further
      mounts should invoke reconfiguration upon it.
      
      This allows mount_single() to be replaced.
      
      [Fix by Eric Biggers folded in]
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      43ce4c1f
    • David Howells's avatar
      mtd: Provide fs_context-aware mount_mtd() replacement · 0f071004
      David Howells authored
      Provide a function, get_tree_mtd(), to replace mount_mtd(), using an
      fs_context struct to hold the parameters.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      cc: David Woodhouse <dwmw2@infradead.org>
      cc: Brian Norris <computersforpeace@gmail.com>
      cc: Boris Brezillon <bbrezillon@kernel.org>
      cc: Marek Vasut <marek.vasut@gmail.com>
      cc: Richard Weinberger <richard@nod.at>
      cc: linux-mtd@lists.infradead.org
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      0f071004
    • David Howells's avatar
      vfs: Create fs_context-aware mount_bdev() replacement · fe62c3a4
      David Howells authored
      Create a function, get_tree_bdev(), that is fs_context-aware and a
      ->get_tree() counterpart of mount_bdev().
      
      It caches the block device pointer in the fs_context struct so that this
      information can be passed into sget_fc()'s test and set functions.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      cc: Jens Axboe <axboe@kernel.dk>
      cc: linux-block@vger.kernel.org
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      fe62c3a4
    • Al Viro's avatar
      new helper: get_tree_keyed() · 533770cc
      Al Viro authored
      For vfs_get_keyed_super users.
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      533770cc
    • Eric Biggers's avatar
      vfs: set fs_context::user_ns for reconfigure · 1dd9bc08
      Eric Biggers authored
      fs_context::user_ns is used by fuse_parse_param(), even during remount,
      so it needs to be set to the existing value for reconfigure.
      
      Reproducer:
      
      	#include <fcntl.h>
      	#include <sys/mount.h>
      
      	int main()
      	{
      		char opts[128];
      		int fd = open("/dev/fuse", O_RDWR);
      
      		sprintf(opts, "fd=%d,rootmode=040000,user_id=0,group_id=0", fd);
      		mkdir("mnt", 0777);
      		mount("foo",  "mnt", "fuse.foo", 0, opts);
      		mount("foo", "mnt", "fuse.foo", MS_REMOUNT, opts);
      	}
      
      Crash:
      	BUG: kernel NULL pointer dereference, address: 0000000000000000
      	#PF: supervisor read access in kernel mode
      	#PF: error_code(0x0000) - not-present page
      	PGD 0 P4D 0
      	Oops: 0000 [#1] SMP
      	CPU: 0 PID: 129 Comm: syz_make_kuid Not tainted 5.3.0-rc5-next-20190821 #3
      	Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-20181126_142135-anatol 04/01/2014
      	RIP: 0010:map_id_range_down+0xb/0xc0 kernel/user_namespace.c:291
      	[...]
      	Call Trace:
      	 map_id_down kernel/user_namespace.c:312 [inline]
      	 make_kuid+0xe/0x10 kernel/user_namespace.c:389
      	 fuse_parse_param+0x116/0x210 fs/fuse/inode.c:523
      	 vfs_parse_fs_param+0xdb/0x1b0 fs/fs_context.c:145
      	 vfs_parse_fs_string+0x6a/0xa0 fs/fs_context.c:188
      	 generic_parse_monolithic+0x85/0xc0 fs/fs_context.c:228
      	 parse_monolithic_mount_data+0x1b/0x20 fs/fs_context.c:708
      	 do_remount fs/namespace.c:2525 [inline]
      	 do_mount+0x39a/0xa60 fs/namespace.c:3107
      	 ksys_mount+0x7d/0xd0 fs/namespace.c:3325
      	 __do_sys_mount fs/namespace.c:3339 [inline]
      	 __se_sys_mount fs/namespace.c:3336 [inline]
      	 __x64_sys_mount+0x20/0x30 fs/namespace.c:3336
      	 do_syscall_64+0x4a/0x1a0 arch/x86/entry/common.c:290
      	 entry_SYSCALL_64_after_hwframe+0x49/0xbe
      
      Reported-by: syzbot+7d6a57304857423318a5@syzkaller.appspotmail.com
      Fixes: 408cbe695350 ("vfs: Convert fuse to use the new mount API")
      Cc: David Howells <dhowells@redhat.com>
      Cc: Miklos Szeredi <miklos@szeredi.hu>
      Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
      Reviewed-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      1dd9bc08
  3. 18 Aug, 2019 11 commits
    • Linus Torvalds's avatar
      Linux 5.3-rc5 · d1abaeb3
      Linus Torvalds authored
      d1abaeb3
    • Linus Torvalds's avatar
      Merge tag 'fixes-for-5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux · 6825e5a6
      Linus Torvalds authored
      Pull MTD fix from Richard Weinberger:
       "A single fix for MTD to correctly set the spi-nor WP pin"
      
      * tag 'fixes-for-5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
        mtd: spi-nor: Fix the disabling of write protection at init
      6825e5a6
    • Linus Torvalds's avatar
      Merge tag 'for-5.3-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux · 3039fadf
      Linus Torvalds authored
      Pull btrfs fixes from David Sterba:
       "Two fixes that popped up during testing:
      
         - fix for sysfs-related code that adds/removes block groups, warnings
           appear during several fstests in connection with sysfs updates in
           5.3, the fix essentially replaces a workaround with scope NOFS and
           applies to 5.2-based branch too
      
         - add sanity check of trim range"
      
      * tag 'for-5.3-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
        btrfs: trim: Check the range passed into to prevent overflow
        Btrfs: fix sysfs warning and missing raid sysfs directories
      3039fadf
    • Linus Torvalds's avatar
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · c332f3a7
      Linus Torvalds authored
      Pull x86 fixes from Thomas Gleixner:
       "A set of fixes for x86:
      
         - Fix the inconsistent error handling in the umwait init code
      
         - Rework the boot param zeroing so gcc9 stops complaining about out
           of bound memset. The resulting source code is actually more sane to
           read than the smart solution we had
      
         - Maintainers update so Tony gets involved when Intel models are
           added
      
         - Some more fallthrough fixes"
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/boot: Save fields explicitly, zero out everything else
        MAINTAINERS, x86/CPU: Tony Luck will maintain asm/intel-family.h
        x86/fpu/math-emu: Address fallthrough warnings
        x86/apic/32: Fix yet another implicit fallthrough warning
        x86/umwait: Fix error handling in umwait_init()
      c332f3a7
    • Linus Torvalds's avatar
      Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 645c03aa
      Linus Torvalds authored
      Pull EFI fix from Thomas Gleixner:
       "A single fix for a EFI mixed mode regression caused by recent rework
        which did not take the firmware bitwidth into account"
      
      * 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        efi-stub: Fix get_efi_config_table on mixed-mode setups
      645c03aa
    • Linus Torvalds's avatar
      Merge tag 'spdx-5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx · 5bba5c9c
      Linus Torvalds authored
      Pull SPDX fixes from Greg KH:
       "Here are four small SPDX fixes for 5.3-rc5.
      
        A few style fixes for some SPDX comments, added an SPDX tag for one
        file, and fix up some GPL boilerplate for another file.
      
        All of these have been in linux-next for a few weeks with no reported
        issues (they are comment changes only, so that's to be expected...)"
      
      * tag 'spdx-5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx:
        i2c: stm32: Use the correct style for SPDX License Identifier
        intel_th: Use the correct style for SPDX License Identifier
        coccinelle: api/atomic_as_refcounter: add SPDX License Identifier
        kernel/configs: Replace GPL boilerplate code with SPDX identifier
      5bba5c9c
    • Linus Torvalds's avatar
      Merge tag 'char-misc-5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc · 4503c0a4
      Linus Torvalds authored
      Pull char/misc driver fixes from Greg KH:
       "Here are some small char and misc driver fixes for 5.3-rc5.
      
        These are two different subsystems needing some fixes, the habanalabs
        driver which is has some more big endian fixes for problems found. The
        other are some small soundwire fixes, including some Kconfig
        dependencies needed to resolve reported build errors.
      
        All of these have been in linux-next this week with no reported
        issues"
      
      * tag 'char-misc-5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
        misc: xilinx-sdfec: fix dependency and build error
        habanalabs: fix device IRQ unmasking for BE host
        habanalabs: fix endianness handling for internal QMAN submission
        habanalabs: fix completion queue handling when host is BE
        habanalabs: fix endianness handling for packets from user
        habanalabs: fix DRAM usage accounting on context tear down
        habanalabs: Avoid double free in error flow
        soundwire: fix regmap dependencies and align with other serial links
        soundwire: cadence_master: fix definitions for INTSTAT0/1
        soundwire: cadence_master: fix register definition for SLAVE_STATE
      4503c0a4
    • Linus Torvalds's avatar
      Merge tag 'staging-5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging · ae1a616a
      Linus Torvalds authored
      Pull staging/IIO fixes from Greg KH:
       "Here are four small staging and iio driver fixes for 5.3-rc5
      
        Two are for the dt3000 comedi driver for some reported problems found
        in that codebase, and two are some small iio fixes.
      
        All of these have been in linux-next this week with no reported
        issues"
      
      * tag 'staging-5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
        staging: comedi: dt3000: Fix rounding up of timer divisor
        staging: comedi: dt3000: Fix signed integer overflow 'divider * base'
        iio: adc: max9611: Fix temperature reading in probe
        iio: frequency: adf4371: Fix output frequency setting
      ae1a616a
    • Linus Torvalds's avatar
      Merge tag 'usb-5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · 359334ca
      Linus Torvalds authored
      Pull USB fixes from Greg KH:
       "Here are number of small USB fixes for 5.3-rc5.
      
        Syzbot has been on a tear recently now that it has some good USB
        debugging hooks integrated, so there's a number of fixes in here found
        by those tools for some _very_ old bugs. Also a handful of gadget
        driver fixes for reported issues, some hopefully-final dma fixes for
        host controller drivers, and some new USB serial gadget driver ids.
      
        All of these have been in linux-next this week with no reported issues
        (the usb-serial ones were in linux-next in its own branch, but merged
        into mine on Friday)"
      
      * tag 'usb-5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
        usb: add a hcd_uses_dma helper
        usb: don't create dma pools for HCDs with a localmem_pool
        usb: chipidea: imx: fix EPROBE_DEFER support during driver probe
        usb: host: fotg2: restart hcd after port reset
        USB: CDC: fix sanity checks in CDC union parser
        usb: cdc-acm: make sure a refcount is taken early enough
        USB: serial: option: add the BroadMobi BM818 card
        USB: serial: option: Add Motorola modem UARTs
        USB: core: Fix races in character device registration and deregistraion
        usb: gadget: mass_storage: Fix races between fsg_disable and fsg_set_alt
        usb: gadget: composite: Clear "suspended" on reset/disconnect
        usb: gadget: udc: renesas_usb3: Fix sysfs interface of "role"
        USB: serial: option: add D-Link DWM-222 device ID
        USB: serial: option: Add support for ZTE MF871A
      359334ca
    • Linus Torvalds's avatar
      Merge tag 'for-linus-2019-08-17' of git://git.kernel.dk/linux-block · 8fde2832
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "A collection of fixes that should go into this series. This contains:
      
         - Revert of the REQ_NOWAIT_INLINE and associated dio changes. There
           were still corner cases there, and even though I had a solution for
           it, it's too involved for this stage. (me)
      
         - Set of NVMe fixes (via Sagi)
      
         - io_uring fix for fixed buffers (Anthony)
      
         - io_uring defer issue fix (Jackie)
      
         - Regression fix for queue sync at exit time (zhengbin)
      
         - xen blk-back memory leak fix (Wenwen)"
      
      * tag 'for-linus-2019-08-17' of git://git.kernel.dk/linux-block:
        io_uring: fix an issue when IOSQE_IO_LINK is inserted into defer list
        block: remove REQ_NOWAIT_INLINE
        io_uring: fix manual setup of iov_iter for fixed buffers
        xen/blkback: fix memory leaks
        blk-mq: move cancel of requeue_work to the front of blk_exit_queue
        nvme-pci: Fix async probe remove race
        nvme: fix controller removal race with scan work
        nvme-rdma: fix possible use-after-free in connect error flow
        nvme: fix a possible deadlock when passthru commands sent to a multipath device
        nvme-core: Fix extra device_put() call on error path
        nvmet-file: fix nvmet_file_flush() always returning an error
        nvmet-loop: Flush nvme_delete_wq when removing the port
        nvmet: Fix use-after-free bug when a port is removed
        nvme-multipath: revalidate nvme_ns_head gendisk in nvme_validate_ns
      8fde2832
    • Linus Torvalds's avatar
      Merge tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux · 85d8d3b1
      Linus Torvalds authored
      Pull Hyper-V fixes from Sasha Levin:
      
       - A few fixes for the userspace hyper-v tools from Adrian Vladu.
      
       - A fix for the hyper-v MAINTAINERs entry from Lan Tianyu.
      
       - Fix for SPDX license identifier in the userspace tools from Nishad
         Kamdar.
      
      * tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
        MAINTAINERS: Fix Hyperv vIOMMU driver file name
        tools: hv: Use the correct style for SPDX License Identifier
        tools: hv: fix typos in toolchain
        tools: hv: fix KVP and VSS daemons exit code
        tools: hv: fixed Python pep8/flake8 warnings for lsvmbus
      85d8d3b1
  4. 17 Aug, 2019 9 commits
  5. 16 Aug, 2019 3 commits
    • Linus Torvalds's avatar
      Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux · b7e7c85d
      Linus Torvalds authored
      Pull arm64 fixes from Catalin Marinas:
      
       - Don't taint the kernel if CPUs have different sets of page sizes
         supported (other than the one in use).
      
       - Issue I-cache maintenance for module ftrace trampoline.
      
      * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
        arm64: ftrace: Ensure module ftrace trampoline is coherent with I-side
        arm64: cpufeature: Don't treat granule sizes as strict
      b7e7c85d
    • Will Deacon's avatar
      arm64: ftrace: Ensure module ftrace trampoline is coherent with I-side · b6143d10
      Will Deacon authored
      The initial support for dynamic ftrace trampolines in modules made use
      of an indirect branch which loaded its target from the beginning of
      a special section (e71a4e1b ("arm64: ftrace: add support for far
      branches to dynamic ftrace")). Since no instructions were being patched,
      no cache maintenance was needed. However, later in be0f272b ("arm64:
      ftrace: emit ftrace-mod.o contents through code") this code was reworked
      to output the trampoline instructions directly into the PLT entry but,
      unfortunately, the necessary cache maintenance was overlooked.
      
      Add a call to __flush_icache_range() after writing the new trampoline
      instructions but before patching in the branch to the trampoline.
      
      Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
      Cc: James Morse <james.morse@arm.com>
      Cc: <stable@vger.kernel.org>
      Fixes: be0f272b ("arm64: ftrace: emit ftrace-mod.o contents through code")
      Signed-off-by: default avatarWill Deacon <will@kernel.org>
      Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
      b6143d10
    • Linus Torvalds's avatar
      Merge tag 'pm-5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 2d63ba3e
      Linus Torvalds authored
      Pull power management fixes from Rafael Wysocki:
       "These add a check to avoid recent suspend-to-idle power regression on
        systems with NVMe drives where the PCIe ASPM policy is "performance"
        (or when the kernel is built without ASPM support), fix an issue
        related to frequency limits in the schedutil cpufreq governor and fix
        a mistake related to the PM QoS usage in the cpufreq core introduced
        recently.
      
        Specifics:
      
         - Disable NVMe power optimization related to suspend-to-idle added
           recently on systems where PCIe ASPM is not able to put PCIe links
           into low-power states to prevent excess power from being drawn by
           the system while suspended (Rafael Wysocki).
      
         - Make the schedutil governor handle frequency limits changes
           properly in all cases (Viresh Kumar).
      
         - Prevent the cpufreq core from treating positive values returned by
           dev_pm_qos_update_request() as errors (Viresh Kumar)"
      
      * tag 'pm-5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        nvme-pci: Allow PCI bus-level PM to be used if ASPM is disabled
        PCI/ASPM: Add pcie_aspm_enabled()
        cpufreq: schedutil: Don't skip freq update when limits change
        cpufreq: dev_pm_qos_update_request() can return 1 on success
      2d63ba3e