diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/blackfin/kernel/traps.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c index fb577427588..0d04a4732b1 100644 --- a/arch/blackfin/kernel/traps.c +++ b/arch/blackfin/kernel/traps.c @@ -196,6 +196,11 @@ done: asmlinkage void double_fault_c(struct pt_regs *fp) { +#ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON + int j; + trace_buffer_save(j); +#endif + console_verbose(); oops_in_progress = 1; #ifdef CONFIG_DEBUG_VERBOSE @@ -220,6 +225,7 @@ asmlinkage void double_fault_c(struct pt_regs *fp) dump_bfin_process(fp); dump_bfin_mem(fp); show_regs(fp); + dump_bfin_trace_buffer(); } #endif panic("Double Fault - unrecoverable event"); @@ -832,6 +838,11 @@ void show_stack(struct task_struct *task, unsigned long *stack) decode_address(buf, (unsigned int)stack); printk(KERN_NOTICE " SP: [0x%p] %s\n", stack, buf); + if (!access_ok(VERIFY_READ, stack, (unsigned int)endstack - (unsigned int)stack)) { + printk(KERN_NOTICE "Invalid stack pointer\n"); + return; + } + /* First thing is to look for a frame pointer */ for (addr = (unsigned int *)((unsigned int)stack & ~0xF); addr < endstack; addr++) { if (*addr & 0x1) |