diff options
Diffstat (limited to 'drivers/tty/sysrq.c')
| -rw-r--r-- | drivers/tty/sysrq.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c index 3ffc1ce29023..6ed8c47312a8 100644 --- a/drivers/tty/sysrq.c +++ b/drivers/tty/sysrq.c @@ -245,8 +245,10 @@ static void sysrq_handle_showallcpus(int key) * architecture has no support for it: */ if (!trigger_all_cpu_backtrace()) { - struct pt_regs *regs = get_irq_regs(); + struct pt_regs *regs = NULL; + if (in_irq()) + regs = get_irq_regs(); if (regs) { pr_info("CPU%d:\n", smp_processor_id()); show_regs(regs); @@ -265,7 +267,10 @@ static struct sysrq_key_op sysrq_showallcpus_op = { static void sysrq_handle_showregs(int key) { - struct pt_regs *regs = get_irq_regs(); + struct pt_regs *regs = NULL; + + if (in_irq()) + regs = get_irq_regs(); if (regs) show_regs(regs); perf_event_print_debug(); |