lkml.org 
[lkml]   [2007]   [Jan]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[S390] Fix kprobes breakpoint handling.
    From: Heiko Carstens <heiko.carstens@de.ibm.com>

    [S390] Fix kprobes breakpoint handling.

    In case of an illegal op the die notifier gets called with DIE_TRAP
    instead of DIE_BPT first.

    Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
    Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
    ---

    arch/s390/kernel/traps.c | 11 +++++++++--
    1 files changed, 9 insertions(+), 2 deletions(-)

    diff -urpN linux-2.6/arch/s390/kernel/traps.c linux-2.6-patched/arch/s390/kernel/traps.c
    --- linux-2.6/arch/s390/kernel/traps.c 2007-01-26 17:27:47.000000000 +0100
    +++ linux-2.6-patched/arch/s390/kernel/traps.c 2007-01-26 17:28:05.000000000 +0100
    @@ -490,8 +490,15 @@ static void illegal_op(struct pt_regs *
    #endif
    } else
    signal = SIGILL;
    - } else
    - signal = SIGILL;
    + } else {
    + /*
    + * If we get an illegal op in kernel mode, send it through the
    + * kprobes notifier. If kprobes doesn't pick it up, SIGILL
    + */
    + if (notify_die(DIE_BPT, "bpt", regs, interruption_code,
    + 3, SIGTRAP) != NOTIFY_STOP)
    + signal = SIGILL;
    + }

    #ifdef CONFIG_MATHEMU
    if (signal == SIGFPE)
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/
    \
     
     \ /
      Last update: 2007-01-26 18:01    [W:3.304 / U:0.008 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site