Blackfin arch: cleanup the icplb/dcplb multiple hit checks
so that we always send the same signal and we handle the NULL ptr condition properly
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
index 5b84707..7bfbd95 100644
--- a/arch/blackfin/kernel/traps.c
+++ b/arch/blackfin/kernel/traps.c
@@ -364,13 +364,13 @@
/* 0x27 - Data CPLB Multiple Hits - Linux Trap Zero, handled here */
case VEC_CPLB_MHIT:
info.si_code = ILL_CPLB_MULHIT;
-#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO
sig = SIGSEGV;
- printk(KERN_NOTICE "NULL pointer access (probably)\n");
-#else
- sig = SIGILL;
- printk(KERN_NOTICE EXC_0x27(KERN_NOTICE));
+#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO
+ if (saved_dcplb_fault_addr < (void *)FIXED_CODE_START)
+ printk(KERN_NOTICE "NULL pointer access\n");
+ else
#endif
+ printk(KERN_NOTICE EXC_0x27(KERN_NOTICE));
CHK_DEBUGGER_TRAP();
break;
/* 0x28 - Emulation Watchpoint, handled here */
@@ -419,13 +419,13 @@
/* 0x2D - Instruction CPLB Multiple Hits, handled here */
case VEC_CPLB_I_MHIT:
info.si_code = ILL_CPLB_MULHIT;
-#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO
sig = SIGSEGV;
- printk(KERN_NOTICE "Jump to address 0 - 0x0fff\n");
-#else
- sig = SIGILL;
- printk(KERN_NOTICE EXC_0x2D(KERN_NOTICE));
+#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO
+ if (saved_icplb_fault_addr < (void *)FIXED_CODE_START)
+ printk(KERN_NOTICE "Jump to NULL address\n");
+ else
#endif
+ printk(KERN_NOTICE EXC_0x2D(KERN_NOTICE));
CHK_DEBUGGER_TRAP();
break;
/* 0x2E - Illegal use of Supervisor Resource, handled here */