Messages in this thread Patch in this message | | | Date | Fri, 26 Jan 2007 17:53:00 +0100 | From | Martin Schwidefsky <> | Subject | [S390] Fix kprobes breakpoint handling. |
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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/
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