Eric Lee / linux-smarc-t335x-v3.2

17 Oct, 2008

1 commit

  • bf2a9a396   Allow recursion in binfmt_script and binfmt_misc ... Browse Code »

    binfmt_script and binfmt_misc disallow recursion to avoid stack overflow
    using sh_bang and misc_bang. It causes problem in some cases:

    $ echo '#!/bin/ls' > /tmp/t0
    $ echo '#!/tmp/t0' > /tmp/t1
    $ echo '#!/tmp/t1' > /tmp/t2
    $ chmod +x /tmp/t*
    $ /tmp/t2
    zsh: exec format error: /tmp/t2

    Similar problem with binfmt_misc.

    This patch introduces field 'recursion_depth' into struct linux_binprm to
    track recursion level in binfmt_misc and binfmt_script. If recursion
    level more then BINPRM_MAX_RECURSION it generates -ENOEXEC.

    [akpm@linux-foundation.org: make linux_binprm.recursion_depth a uint]
    Signed-off-by: Kirill A. Shutemov
    Cc: Pavel Emelyanov
    Cc: Alexander Viro
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Kirill A. Shutemov
     

29 Apr, 2008

1 commit

  • 3a2e7f47d   binfmt_misc.c: avoid potential kernel stack overflow ... Browse Code »

    This can be triggered with root help only, but...

    Register the ":text:E::txt::/root/cat.txt:' rule in binfmt_misc (by root) and
    try launching the cat.txt file (by anyone) :) The result is - the endless
    recursion in the load_misc_binary -> open_exec -> load_misc_binary chain and
    stack overflow.

    There's a similar problem with binfmt_script, and there's a sh_bang memner on
    linux_binprm structure to handle this, but simply raising this in binfmt_misc
    may break some setups when the interpreter of some misc binaries is a script.

    So the proposal is to turn sh_bang into a bit, add a new one (the misc_bang)
    and raise it in load_misc_binary. After this, even if we set up the misc ->
    script -> misc loop for binfmts one of them will step on its own bang and
    exit.

    Signed-off-by: Pavel Emelyanov
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Pavel Emelyanov
     

20 Oct, 2007

1 commit

  • 96de0e252   Convert files to UTF-8 and some cleanups ... Browse Code »

    * Convert files to UTF-8.

    * Also correct some people's names
    (one example is Eißfeldt, which was found in a source file.
    Given that the author used an ß at all in a source file
    indicates that the real name has in fact a 'ß' and not an 'ss',
    which is commonly used as a substitute for 'ß' when limited to
    7bit.)

    * Correct town names (Goettingen -> Göttingen)

    * Update Eberhard Mönkeberg's address (http://lkml.org/lkml/2007/1/8/313)

    Signed-off-by: Jan Engelhardt
    Signed-off-by: Adrian Bunk

    Jan Engelhardt
     

09 May, 2007

1 commit

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