Eric Lee / smarc-fsl-linux-kernel

29 Mar, 2018

1 commit

  • 2a2b9ef30   staging: ncpfs: memory corruption in ncp_read_kernel() ... Browse Code »

    commit 4c41aa24baa4ed338241d05494f2c595c885af8f upstream.

    If the server is malicious then *bytes_read could be larger than the
    size of the "target" buffer. It would lead to memory corruption when we
    do the memcpy().

    Reported-by: Dr Silvio Cesare of InfoSect
    Signed-off-by: Dan Carpenter
    Cc: stable
    Signed-off-by: Greg Kroah-Hartman

    Dan Carpenter
     

02 Nov, 2017

1 commit

  • b24413180   License cleanup: add SPDX GPL-2.0 license identifier to files with no license ... Browse Code »

    Many source files in the tree are missing licensing information, which
    makes it harder for compliance tools to determine the correct license.

    By default all files without license information are under the default
    license of the kernel, which is GPL version 2.

    Update the files which contain no license information with the 'GPL-2.0'
    SPDX license identifier. The SPDX identifier is a legally binding
    shorthand, which can be used instead of the full boiler plate text.

    This patch is based on work done by Thomas Gleixner and Kate Stewart and
    Philippe Ombredanne.

    How this work was done:

    Patches were generated and checked against linux-4.14-rc6 for a subset of
    the use cases:
    - file had no licensing information it it.
    - file was a */uapi/* one with no licensing information in it,
    - file was a */uapi/* one with existing licensing information,

    Further patches will be generated in subsequent months to fix up cases
    where non-standard license headers were used, and references to license
    had to be inferred by heuristics based on keywords.

    The analysis to determine which SPDX License Identifier to be applied to
    a file was done in a spreadsheet of side by side results from of the
    output of two independent scanners (ScanCode & Windriver) producing SPDX
    tag:value files created by Philippe Ombredanne. Philippe prepared the
    base worksheet, and did an initial spot review of a few 1000 files.

    The 4.13 kernel was the starting point of the analysis with 60,537 files
    assessed. Kate Stewart did a file by file comparison of the scanner
    results in the spreadsheet to determine which SPDX license identifier(s)
    to be applied to the file. She confirmed any determination that was not
    immediately clear with lawyers working with the Linux Foundation.

    Criteria used to select files for SPDX license identifier tagging was:
    - Files considered eligible had to be source code files.
    - Make and config files were included as candidates if they contained >5
    lines of source
    - File already had some variant of a license header in it (even if
    Reviewed-by: Philippe Ombredanne
    Reviewed-by: Thomas Gleixner
    Signed-off-by: Greg Kroah-Hartman

    Greg Kroah-Hartman
     

01 Aug, 2017

1 commit

  • 3b49c9a1e   fs: convert a pile of fsync routines to errseq_t based reporting ... Browse Code »

    This patch converts most of the in-kernel filesystems that do writeback
    out of the pagecache to report errors using the errseq_t-based
    infrastructure that was recently added. This allows them to report
    errors once for each open file description.

    Most filesystems have a fairly straightforward fsync operation. They
    call filemap_write_and_wait_range to write back all of the data and
    wait on it, and then (sometimes) sync out the metadata.

    For those filesystems this is a straightforward conversion from calling
    filemap_write_and_wait_range in their fsync operation to calling
    file_write_and_wait_range.

    Acked-by: Jan Kara
    Acked-by: Dave Kleikamp
    Signed-off-by: Jeff Layton

    Jeff Layton
     

07 Jul, 2017

1 commit

  • 2262185c5   mm: per-cgroup memory reclaim stats ... Browse Code »

    Track the following reclaim counters for every memory cgroup: PGREFILL,
    PGSCAN, PGSTEAL, PGACTIVATE, PGDEACTIVATE, PGLAZYFREE and PGLAZYFREED.

    These values are exposed using the memory.stats interface of cgroup v2.

    The meaning of each value is the same as for global counters, available
    using /proc/vmstat.

    Also, for consistency, rename mem_cgroup_count_vm_event() to
    count_memcg_event_mm().

    Link: http://lkml.kernel.org/r/1494530183-30808-1-git-send-email-guro@fb.com
    Signed-off-by: Roman Gushchin
    Suggested-by: Johannes Weiner
    Acked-by: Michal Hocko
    Acked-by: Vladimir Davydov
    Acked-by: Johannes Weiner
    Cc: Tejun Heo
    Cc: Li Zefan
    Cc: Balbir Singh
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Roman Gushchin
     

21 Apr, 2017

1 commit

  • a0349ec00   ncpfs: Convert to separately allocated bdi ... Browse Code »

    Allocate struct backing_dev_info separately instead of embedding it
    inside the superblock. This unifies handling of bdi among users.

    CC: Petr Vandrovec
    Acked-by: Petr Vandrovec
    Reviewed-by: Christoph Hellwig
    Signed-off-by: Jan Kara
    Signed-off-by: Jens Axboe

    Jan Kara
     

04 Mar, 2017

1 commit

  • 1827adb11   Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip ... Browse Code »

    Pull sched.h split-up from Ingo Molnar:
    "The point of these changes is to significantly reduce the
    header footprint, to speed up the kernel build and to
    have a cleaner header structure.

    After these changes the new 's typical preprocessed
    size goes down from a previous ~0.68 MB (~22K lines) to ~0.45 MB (~15K
    lines), which is around 40% faster to build on typical configs.

    Not much changed from the last version (-v2) posted three weeks ago: I
    eliminated quirks, backmerged fixes plus I rebased it to an upstream
    SHA1 from yesterday that includes most changes queued up in -next plus
    all sched.h changes that were pending from Andrew.

    I've re-tested the series both on x86 and on cross-arch defconfigs,
    and did a bisectability test at a number of random points.

    I tried to test as many build configurations as possible, but some
    build breakage is probably still left - but it should be mostly
    limited to architectures that have no cross-compiler binaries
    available on kernel.org, and non-default configurations"

    * 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (146 commits)
    sched/headers: Clean up
    sched/headers: Remove #ifdefs from
    sched/headers: Remove the include from
    sched/headers, hrtimer: Remove the include from
    sched/headers, x86/apic: Remove the header inclusion from
    sched/headers, timers: Remove the include from
    sched/headers: Remove from
    sched/headers: Remove from
    sched/core: Remove unused prefetch_stack()
    sched/headers: Remove from
    sched/headers: Remove the 'init_pid_ns' prototype from
    sched/headers: Remove from
    sched/headers: Remove from
    sched/headers: Remove the runqueue_is_locked() prototype
    sched/headers: Remove from
    sched/headers: Remove from
    sched/headers: Remove from
    sched/headers: Remove from
    sched/headers: Remove the include from
    sched/headers: Remove from
    ...

    Linus Torvalds
     

03 Mar, 2017

1 commit

  • 69fd110eb   Merge branch 'work.sendmsg' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs ... Browse Code »

    Pull vfs sendmsg updates from Al Viro:
    "More sendmsg work.

    This is a fairly separate isolated stuff (there's a continuation
    around lustre, but that one was too late to soak in -next), thus the
    separate pull request"

    * 'work.sendmsg' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
    ncpfs: switch to sock_sendmsg()
    ncpfs: don't mess with manually advancing iovec on send
    ncpfs: sendmsg does *not* bugger iovec these days
    ceph_tcp_sendpage(): use ITER_BVEC sendmsg
    afs_send_pages(): use ITER_BVEC
    rds: remove dead code
    ceph: switch to sock_recvmsg()
    usbip_recv(): switch to sock_recvmsg()
    iscsi_target: deal with short writes on the tx side
    [nbd] pass iov_iter to nbd_xmit()
    [nbd] switch sock_xmit() to sock_{send,recv}msg()
    [drbd] use sock_sendmsg()

    Linus Torvalds
     

02 Mar, 2017

2 commits

28 Feb, 2017

1 commit

  • 5b5e0928f   lib/vsprintf.c: remove %Z support ... Browse Code »

    Now that %z is standartised in C99 there is no reason to support %Z.
    Unlike %L it doesn't even make format strings smaller.

    Use BUILD_BUG_ON in a couple ATM drivers.

    In case anyone didn't notice lib/vsprintf.o is about half of SLUB which
    is in my opinion is quite an achievement. Hopefully this patch inspires
    someone else to trim vsprintf.c more.

    Link: http://lkml.kernel.org/r/20170103230126.GA30170@avx2
    Signed-off-by: Alexey Dobriyan
    Cc: Andy Shevchenko
    Cc: Rasmus Villemoes
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexey Dobriyan
     

25 Feb, 2017

1 commit

  • 11bac8000   mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf ... Browse Code »

    ->fault(), ->page_mkwrite(), and ->pfn_mkwrite() calls do not need to
    take a vma and vmf parameter when the vma already resides in vmf.

    Remove the vma parameter to simplify things.

    [arnd@arndb.de: fix ARM build]
    Link: http://lkml.kernel.org/r/20170125223558.1451224-1-arnd@arndb.de
    Link: http://lkml.kernel.org/r/148521301778.19116.10840599906674778980.stgit@djiang5-desk3.ch.intel.com
    Signed-off-by: Dave Jiang
    Signed-off-by: Arnd Bergmann
    Reviewed-by: Ross Zwisler
    Cc: Theodore Ts'o
    Cc: Darrick J. Wong
    Cc: Matthew Wilcox
    Cc: Dave Hansen
    Cc: Christoph Hellwig
    Cc: Jan Kara
    Cc: Dan Williams
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Dave Jiang
     

27 Dec, 2016

3 commits

25 Dec, 2016

1 commit

18 Dec, 2016

1 commit

  • 231753ef7   Merge uncontroversial parts of branch 'readlink' of git://git.kernel.org/pub/scm… ... Browse Code »

    …/linux/kernel/git/mszeredi/vfs

    Pull partial readlink cleanups from Miklos Szeredi.

    This is the uncontroversial part of the readlink cleanup patch-set that
    simplifies the default readlink handling.

    Miklos and Al are still discussing the rest of the series.

    * git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
    vfs: make generic_readlink() static
    vfs: remove ".readlink = generic_readlink" assignments
    vfs: default to generic_readlink()
    vfs: replace calling i_op->readlink with vfs_readlink()
    proc/self: use generic_readlink
    ecryptfs: use vfs_get_link()
    bad_inode: add missing i_op initializers

    Linus Torvalds
     

09 Dec, 2016

1 commit

06 Dec, 2016

1 commit

  • cbbd26b8b   [iov_iter] new primitives - copy_from_iter_full() and friends ... Browse Code »

    copy_from_iter_full(), copy_from_iter_full_nocache() and
    csum_and_copy_from_iter_full() - counterparts of copy_from_iter()
    et.al., advancing iterator only in case of successful full copy
    and returning whether it had been successful or not.

    Convert some obvious users. *NOTE* - do not blindly assume that
    something is a good candidate for those unless you are sure that
    not advancing iov_iter in failure case is the right thing in
    this case. Anything that does short read/short write kind of
    stuff (or is in a loop, etc.) is unlikely to be a good one.

    Signed-off-by: Al Viro

    Al Viro
     

11 Oct, 2016

1 commit

  • 101105b17   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs ... Browse Code »

    Pull more vfs updates from Al Viro:
    ">rename2() work from Miklos + current_time() from Deepa"

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
    fs: Replace current_fs_time() with current_time()
    fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps
    fs: Replace CURRENT_TIME with current_time() for inode timestamps
    fs: proc: Delete inode time initializations in proc_alloc_inode()
    vfs: Add current_time() api
    vfs: add note about i_op->rename changes to porting
    fs: rename "rename2" i_op to "rename"
    vfs: remove unused i_op->rename
    fs: make remaining filesystems use .rename2
    libfs: support RENAME_NOREPLACE in simple_rename()
    fs: support RENAME_NOREPLACE for local filesystems
    ncpfs: fix unused variable warning

    Linus Torvalds
     

27 Sep, 2016

3 commits

  • 2773bf00a   fs: rename "rename2" i_op to "rename" ... Browse Code »

    Generated patch:

    sed -i "s/\.rename2\t/\.rename\t\t/" `git grep -wl rename2`
    sed -i "s/\brename2\b/rename/g" `git grep -wl rename2`

    Signed-off-by: Miklos Szeredi

    Miklos Szeredi
     
  • 1cd66c93b   fs: make remaining filesystems use .rename2 ... Browse Code »

    This is trivial to do:

    - add flags argument to foo_rename()
    - check if flags is zero
    - assign foo_rename() to .rename2 instead of .rename

    This doesn't mean it's impossible to support RENAME_NOREPLACE for these
    filesystems, but it is not trivial, like for local filesystems.
    RENAME_NOREPLACE must guarantee atomicity (i.e. it shouldn't be possible
    for a file to be created on one host while it is overwritten by rename on
    another host).

    Filesystems converted:

    9p, afs, ceph, coda, ecryptfs, kernfs, lustre, ncpfs, nfs, ocfs2, orangefs.

    After this, we can get rid of the duplicate interfaces for rename.

    Signed-off-by: Miklos Szeredi
    Acked-by: Greg Kroah-Hartman
    Acked-by: David Howells [AFS]
    Acked-by: Mike Marshall
    Cc: Eric Van Hensbergen
    Cc: Ilya Dryomov
    Cc: Jan Harkes
    Cc: Tyler Hicks
    Cc: Oleg Drokin
    Cc: Trond Myklebust
    Cc: Mark Fasheh

    Miklos Szeredi
     
  • 9a232de49   ncpfs: fix unused variable warning ... Browse Code »

    Without CONFIG_NCPFS_NLS the following warning is seen:

    fs/ncpfs/dir.c: In function 'ncp_hash_dentry':
    fs/ncpfs/dir.c:136:23: warning: unused variable 'sb' [-Wunused-variable]
    struct super_block *sb = dentry->d_sb;

    Signed-off-by: Miklos Szeredi

    Miklos Szeredi
     

22 Sep, 2016

1 commit

  • 31051c85b   fs: Give dentry to inode_change_ok() instead of inode ... Browse Code »

    inode_change_ok() will be resposible for clearing capabilities and IMA
    extended attributes and as such will need dentry. Give it as an argument
    to inode_change_ok() instead of an inode. Also rename inode_change_ok()
    to setattr_prepare() to better relect that it does also some
    modifications in addition to checks.

    Reviewed-by: Christoph Hellwig
    Signed-off-by: Jan Kara

    Jan Kara
     

01 Aug, 2016

1 commit

11 Jun, 2016

1 commit

  • 8387ff257   vfs: make the string hashes salt the hash ... Browse Code »

    We always mixed in the parent pointer into the dentry name hash, but we
    did it late at lookup time. It turns out that we can simplify that
    lookup-time action by salting the hash with the parent pointer early
    instead of late.

    A few other users of our string hashes also wanted to mix in their own
    pointers into the hash, and those are updated to use the same mechanism.

    Hash users that don't have any particular initial salt can just use the
    NULL pointer as a no-salt.

    Cc: Vegard Nossum
    Cc: George Spelvin
    Cc: Al Viro
    Signed-off-by: Linus Torvalds

    Linus Torvalds
     

05 Apr, 2016

1 commit

  • 09cbfeaf1   mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros ... Browse Code »

    PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time
    ago with promise that one day it will be possible to implement page
    cache with bigger chunks than PAGE_SIZE.

    This promise never materialized. And unlikely will.

    We have many places where PAGE_CACHE_SIZE assumed to be equal to
    PAGE_SIZE. And it's constant source of confusion on whether
    PAGE_CACHE_* or PAGE_* constant should be used in a particular case,
    especially on the border between fs and mm.

    Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much
    breakage to be doable.

    Let's stop pretending that pages in page cache are special. They are
    not.

    The changes are pretty straight-forward:

    - << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> ;

    - >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> ;

    - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN};

    - page_cache_get() -> get_page();

    - page_cache_release() -> put_page();

    This patch contains automated changes generated with coccinelle using
    script below. For some reason, coccinelle doesn't patch header files.
    I've called spatch for them manually.

    The only adjustment after coccinelle is revert of changes to
    PAGE_CAHCE_ALIGN definition: we are going to drop it later.

    There are few places in the code where coccinelle didn't reach. I'll
    fix them manually in a separate patch. Comments and documentation also
    will be addressed with the separate patch.

    virtual patch

    @@
    expression E;
    @@
    - E << (PAGE_CACHE_SHIFT - PAGE_SHIFT)
    + E

    @@
    expression E;
    @@
    - E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT)
    + E

    @@
    @@
    - PAGE_CACHE_SHIFT
    + PAGE_SHIFT

    @@
    @@
    - PAGE_CACHE_SIZE
    + PAGE_SIZE

    @@
    @@
    - PAGE_CACHE_MASK
    + PAGE_MASK

    @@
    expression E;
    @@
    - PAGE_CACHE_ALIGN(E)
    + PAGE_ALIGN(E)

    @@
    expression E;
    @@
    - page_cache_get(E)
    + get_page(E)

    @@
    expression E;
    @@
    - page_cache_release(E)
    + put_page(E)

    Signed-off-by: Kirill A. Shutemov
    Acked-by: Michal Hocko
    Signed-off-by: Linus Torvalds

    Kirill A. Shutemov
     

08 Mar, 2016

1 commit

  • 803c00123   ncpfs: fix a braino in OOM handling in ncp_fill_cache() ... Browse Code »

    Failing to allocate an inode for child means that cache for *parent* is
    incompletely populated. So it's parent directory inode ('dir') that
    needs NCPI_DIR_CACHE flag removed, *not* the child inode ('inode', which
    is what we'd failed to allocate in the first place).

    Fucked-up-in: commit 5e993e25 ("ncpfs: get rid of d_validate() nonsense")
    Fucked-up-by: Al Viro
    Cc: stable@vger.kernel.org # v3.19
    Signed-off-by: Al Viro

    Al Viro
     

23 Jan, 2016

1 commit

  • 5955102c9   wrappers for ->i_mutex access ... Browse Code »

    parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested},
    inode_foo(inode) being mutex_foo(&inode->i_mutex).

    Please, use those for access to ->i_mutex; over the coming cycle
    ->i_mutex will become rwsem, with ->lookup() done with it held
    only shared.

    Signed-off-by: Al Viro

    Al Viro
     

15 Jan, 2016

1 commit

  • 5d097056c   kmemcg: account certain kmem allocations to memcg ... Browse Code »

    Mark those kmem allocations that are known to be easily triggered from
    userspace as __GFP_ACCOUNT/SLAB_ACCOUNT, which makes them accounted to
    memcg. For the list, see below:

    - threadinfo
    - task_struct
    - task_delay_info
    - pid
    - cred
    - mm_struct
    - vm_area_struct and vm_region (nommu)
    - anon_vma and anon_vma_chain
    - signal_struct
    - sighand_struct
    - fs_struct
    - files_struct
    - fdtable and fdtable->full_fds_bits
    - dentry and external_name
    - inode for all filesystems. This is the most tedious part, because
    most filesystems overwrite the alloc_inode method.

    The list is far from complete, so feel free to add more objects.
    Nevertheless, it should be close to "account everything" approach and
    keep most workloads within bounds. Malevolent users will be able to
    breach the limit, but this was possible even with the former "account
    everything" approach (simply because it did not account everything in
    fact).

    [akpm@linux-foundation.org: coding-style fixes]
    Signed-off-by: Vladimir Davydov
    Acked-by: Johannes Weiner
    Acked-by: Michal Hocko
    Cc: Tejun Heo
    Cc: Greg Thelen
    Cc: Christoph Lameter
    Cc: Pekka Enberg
    Cc: David Rientjes
    Cc: Joonsoo Kim
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Vladimir Davydov
     

31 Dec, 2015

1 commit

09 Dec, 2015

2 commits

  • 6b2553918   replace ->follow_link() with new method that could stay in RCU mode ... Browse Code »

    new method: ->get_link(); replacement of ->follow_link(). The differences
    are:
    * inode and dentry are passed separately
    * might be called both in RCU and non-RCU mode;
    the former is indicated by passing it a NULL dentry.
    * when called that way it isn't allowed to block
    and should return ERR_PTR(-ECHILD) if it needs to be called
    in non-RCU mode.

    It's a flagday change - the old method is gone, all in-tree instances
    converted. Conversion isn't hard; said that, so far very few instances
    do not immediately bail out when called in RCU mode. That'll change
    in the next commits.

    Signed-off-by: Al Viro

    Al Viro
     
  • 21fc61c73   don't put symlink bodies in pagecache into highmem ... Browse Code »

    kmap() in page_follow_link_light() needed to go - allowing to hold
    an arbitrary number of kmaps for long is a great way to deadlocking
    the system.

    new helper (inode_nohighmem(inode)) needs to be used for pagecache
    symlinks inodes; done for all in-tree cases. page_follow_link_light()
    instrumented to yell about anything missed.

    Signed-off-by: Al Viro

    Al Viro
     

21 Nov, 2015

1 commit

  • 1491e30ed   ncpfs: don't allow negative timeouts ... Browse Code »

    This code causes a static checker warning because it's a user controlled
    variable where we cap the upper bound but not the lower bound. Let's
    return an -EINVAL for negative timeouts.

    [akpm@linux-foundation.org: remove unneeded `else']
    Signed-off-by: Dan Carpenter
    Reviewed-by: Jan Kara
    Cc: Petr Vandrovec
    Cc: David Howells
    Cc: Jan Kara
    Cc: Al Viro
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Dan Carpenter
     

10 Nov, 2015

1 commit

29 Sep, 2015

1 commit

  • a1c83681d   fs: Drop unlikely before IS_ERR(_OR_NULL) ... Browse Code »

    IS_ERR(_OR_NULL) already contain an 'unlikely' compiler flag and there
    is no need to do that again from its callers. Drop it.

    Signed-off-by: Viresh Kumar
    Reviewed-by: Jeff Layton
    Reviewed-by: David Howells
    Reviewed-by: Steve French
    Signed-off-by: Jiri Kosina

    Viresh Kumar
     

14 Jun, 2015

1 commit

16 Apr, 2015

1 commit

12 Apr, 2015

3 commits