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authorHeiko Carstens <heiko.carstens@de.ibm.com>2007-02-05 21:17:29 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-02-05 21:17:29 +0100
commit35df8d53f5c951ac0cd79f1084e6787ca5980207 (patch)
treefc8d2abc161da739be40af49dfd0773aa8841a67
parentd58140cc18b3d69e86dead47aab5c838c08dc37e (diff)
downloadop-kernel-dev-35df8d53f5c951ac0cd79f1084e6787ca5980207.zip
op-kernel-dev-35df8d53f5c951ac0cd79f1084e6787ca5980207.tar.gz
[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>
-rw-r--r--arch/s390/kernel/traps.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index aa0d7ee..f0e5a32 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -490,8 +490,15 @@ static void illegal_op(struct pt_regs * regs, long interruption_code)
#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)
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