Eric Lee / smarc-fsl-linux-kernel

26 Jul, 2011

1 commit

  • 0d0138ebe   xtensa: prevent arbitrary read in ptrace ... Browse Code »
    1

    Prevent an arbitrary kernel read. Check the user pointer with access_ok()
    before copying data in.

    [akpm@linux-foundation.org: s/EIO/EFAULT/]
    Signed-off-by: Dan Rosenberg
    Cc: Christian Zankel
    Cc: Oleg Nesterov
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Dan Rosenberg
     

28 Oct, 2010

2 commits

  • 5ef45079d   ptrace: cleanup arch_ptrace() on xtensa ... Browse Code »

    Use new 'datap' variable in order to remove unnecessary castings.

    Signed-off-by: Namhyung Kim
    Cc: Chris Zankel
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Namhyung Kim
     
  • 9b05a69e0   ptrace: change signature of arch_ptrace() ... Browse Code »

    Fix up the arguments to arch_ptrace() to take account of the fact that
    @addr and @data are now unsigned long rather than long as of a preceding
    patch in this series.

    Signed-off-by: Namhyung Kim
    Cc:
    Acked-by: Roland McGrath
    Acked-by: David Howells
    Acked-by: Geert Uytterhoeven
    Acked-by: David S. Miller
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Namhyung Kim
     

13 Mar, 2010

1 commit

  • 6d75ca102   xtensa: use generic ptrace_resume code ... Browse Code »

    Use the generic ptrace_resume code for PTRACE_SYSCALL, PTRACE_CONT,
    PTRACE_KILL and PTRACE_SINGLESTEP. This implies defining
    arch_has_single_step in and implementing the
    user_enable_single_step and user_disable_single_step functions, which also
    causes the breakpoint information to be cleared on fork, which could be
    considered a bug fix.

    Also the TIF_SYSCALL_TRACE thread flag is now cleared on PTRACE_KILL which
    it previously wasn't which is consistent with all architectures using the
    modern ptrace code.

    Signed-off-by: Christoph Hellwig
    Cc: Oleg Nesterov
    Cc: Roland McGrath
    Cc: Chris Zankel
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Hellwig
     

14 Feb, 2008

2 commits

  • 42086cec3   [XTENSA] Allow debugger to modify the WINDOWBASE register. ... Browse Code »

    For the 'return' command, GDB needs to adjust WINDOWBASE.
    In case WB is different from 0, we need to rotate the
    window register file and update WINDOWSTART and WMASK.
    This patch also removes some ret|= statements for
    __get_user/__put_user as the address range was alrady
    checked a couple of lines earlier.

    Signed-off-by: Chris Zankel

    Chris Zankel
     
  • c658eac62   [XTENSA] Add support for configurable registers and coprocessors ... Browse Code »

    The Xtensa architecture allows to define custom instructions and
    registers. Registers that are bound to a coprocessor are only
    accessible if the corresponding enable bit is set, which allows
    to implement a 'lazy' context switch mechanism. Other registers
    needs to be saved and restore at the time of the context switch
    or during interrupt handling.

    This patch adds support for these additional states:

    - save and restore registers that are used by the compiler upon
    interrupt entry and exit.
    - context switch additional registers unbound to any coprocessor
    - 'lazy' context switch of registers bound to a coprocessor
    - ptrace interface to provide access to additional registers
    - update configuration files in include/asm-xtensa/variant-fsf

    Signed-off-by: Chris Zankel

    Chris Zankel
     

17 Oct, 2007

1 commit

  • 1bcf54829   Consolidate PTRACE_DETACH ... Browse Code »

    Identical handlers of PTRACE_DETACH go into ptrace_request().
    Not touching compat code.
    Not touching archs that don't call ptrace_request.

    Signed-off-by: Alexey Dobriyan
    Acked-by: Christoph Hellwig
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexey Dobriyan
     

18 Jul, 2007

2 commits

  • f284ce726   PTRACE_POKEDATA consolidation ... Browse Code »

    Identical implementations of PTRACE_POKEDATA go into generic_ptrace_pokedata()
    function.

    AFAICS, fix bug on xtensa where successful PTRACE_POKEDATA will nevertheless
    return EPERM.

    Signed-off-by: Alexey Dobriyan
    Cc: Christoph Hellwig
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexey Dobriyan
     
  • 766473231   PTRACE_PEEKDATA consolidation ... Browse Code »

    Identical implementations of PTRACE_PEEKDATA go into generic_ptrace_peekdata()
    function.

    Signed-off-by: Alexey Dobriyan
    Cc: Christoph Hellwig
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexey Dobriyan
     

09 May, 2007

1 commit

11 Dec, 2006

2 commits

  • fc4fb2adf   [PATCH] xtensa: fix system call interface ... Browse Code »

    This is a long outstanding patch to finally fix the syscall interface. The
    constants used for the system calls are those we have provided in our libc
    patches. This patch also fixes the shmbuf and stat structure, and fcntl
    definitions.

    Signed-off-by: Chris Zankel
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Chris Zankel
     
  • 173d66813   [PATCH] xtensa: remove extra header files ... Browse Code »

    The Xtensa port contained many header files that were never needed. This
    rather lengthy patch removes all those files. Unfortunately, there were
    many dependencies that needed to be updated, so this patch touches quite a
    few source files.

    Signed-off-by: Chris Zankel
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Chris Zankel
     

02 Sep, 2006

1 commit

01 Jul, 2006

1 commit

13 Jan, 2006

1 commit

07 Nov, 2005

1 commit

  • 481bed454   [PATCH] consolidate sys_ptrace() ... Browse Code »

    The sys_ptrace boilerplate code (everything outside the big switch
    statement for the arch-specific requests) is shared by most architectures.
    This patch moves it to kernel/ptrace.c and leaves the arch-specific code as
    arch_ptrace.

    Some architectures have a too different ptrace so we have to exclude them.
    They continue to keep their implementations. For sh64 I had to add a
    sh64_ptrace wrapper because it does some initialization on the first call.
    For um I removed an ifdefed SUBARCH_PTRACE_SPECIAL block, but
    SUBARCH_PTRACE_SPECIAL isn't defined anywhere in the tree.

    Signed-off-by: Christoph Hellwig
    Acked-by: Paul Mackerras
    Acked-by: Ralf Baechle
    Acked-By: David Howells
    Acked-by: Russell King
    Acked-by: Paul Mundt
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Hellwig
     

31 Oct, 2005

1 commit

30 Jun, 2005

1 commit

24 Jun, 2005

1 commit