Eric Lee / smarc-fsl-linux-kernel

13 Aug, 2020

1 commit

  • da27e0a0e   fs/minix: check return value of sb_getblk() ... Browse Code »

    Patch series "fs/minix: fix syzbot bugs and set s_maxbytes".

    This series fixes all syzbot bugs in the minix filesystem:

    KASAN: null-ptr-deref Write in get_block
    KASAN: use-after-free Write in get_block
    KASAN: use-after-free Read in get_block
    WARNING in inc_nlink
    KMSAN: uninit-value in get_block
    WARNING in drop_nlink

    It also fixes the minix filesystem to set s_maxbytes correctly, so that
    userspace sees the correct behavior when exceeding the max file size.

    This patch (of 6):

    sb_getblk() can fail, so check its return value.

    This fixes a NULL pointer dereference.

    Originally from Qiujun Huang.

    Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
    Reported-by: syzbot+4a88b2b9dc280f47baf4@syzkaller.appspotmail.com
    Signed-off-by: Eric Biggers
    Signed-off-by: Andrew Morton
    Cc: Qiujun Huang
    Cc: Alexander Viro
    Cc:
    Link: http://lkml.kernel.org/r/20200628060846.682158-1-ebiggers@kernel.org
    Link: http://lkml.kernel.org/r/20200628060846.682158-2-ebiggers@kernel.org
    Signed-off-by: Linus Torvalds

    Eric Biggers
     

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
     

30 Jun, 2017

1 commit

  • 4f2ed6941   minix: Deinline get_block, save 2691 bytes ... Browse Code »

    This function compiles to 1402 bytes of machine code.

    It has 2 callsites, and also a not-inlined copy gets created by compiler
    anyway since its address gets passed as a parameter to block_truncate_page().

    Signed-off-by: Denys Vlasenko
    CC: Al Viro
    CC: linux-fsdevel@vger.kernel.org
    CC: linux-kernel@vger.kernel.org
    Signed-off-by: Al Viro

    Denys Vlasenko
     

28 Sep, 2016

1 commit

  • 02027d42c   fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps ... Browse Code »

    CURRENT_TIME_SEC is not y2038 safe. current_time() will
    be transitioned to use 64 bit time along with vfs in a
    separate patch.
    There is no plan to transistion CURRENT_TIME_SEC to use
    y2038 safe time interfaces.

    current_time() will also be extended to use superblock
    range checking parameters when range checking is introduced.

    This works because alloc_super() fills in the the s_time_gran
    in super block to NSEC_PER_SEC.

    Signed-off-by: Deepa Dinamani
    Acked-by: Jan Kara
    Signed-off-by: Al Viro

    Deepa Dinamani
     

13 Feb, 2007

1 commit

  • 939b00df0   [PATCH] Minix V3 support ... Browse Code »

    This morning I needed to read a Minix V3 filesystem, but unfortunately my
    2.6.19 did not support that, and neither did the downloaded 2.6.20rc4.

    Fortunately, google told me that Daniel Aragones had already done the work,
    patch found at http://www.terra.es/personal2/danarag/

    Unfortunaly, looking at the patch was painful to my eyes, so I polished it
    a bit before applying. The resulting kernel boots, and reads the
    filesystem it needed to read.

    Signed-off-by: Daniel Aragones
    Signed-off-by: Andries Brouwer
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andries Brouwer
     

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds