lkml.org 
[lkml]   [2010]   [Jul]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[200/200] parisc: clear floating point exception flag on SIGFPE signal
    2.6.34-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Helge Deller <deller@gmx.de>

    commit 550f0d922286556c7ea43974bb7921effb5a5278 upstream.

    Clear the floating point exception flag before returning to
    user space. This is needed, else the libc trampoline handler
    may hit the same SIGFPE again while building up a trampoline
    to a signal handler.

    Fixes debian bug #559406.

    Signed-off-by: Helge Deller <deller@gmx.de>
    Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

    ---
    arch/parisc/math-emu/decode_exc.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/arch/parisc/math-emu/decode_exc.c
    +++ b/arch/parisc/math-emu/decode_exc.c
    @@ -342,6 +342,7 @@ decode_fpu(unsigned int Fpu_register[],
    return SIGNALCODE(SIGFPE, FPE_FLTINV);
    case DIVISIONBYZEROEXCEPTION:
    update_trap_counts(Fpu_register, aflags, bflags, trap_counts);
    + Clear_excp_register(exception_index);
    return SIGNALCODE(SIGFPE, FPE_FLTDIV);
    case INEXACTEXCEPTION:
    update_trap_counts(Fpu_register, aflags, bflags, trap_counts);



    \
     
     \ /
      Last update: 2010-07-01 23:29    [W:3.044 / U:1.500 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site