Re: [PATCH] sysrq : fix Show Regs call trace on ARM

Hi,Jiri: get_irq_regs() in the softirq context return NULL. thanks, Jibin Xu On 2017年09月11日 13:24, Jiri Slaby wrote: On 09/11/2017, 05:11 AM, Jibin Xu wrote: ... --- a/drivers/tty/sysrq.c +++ b/drivers/tty/sysrq.c @@ -245,8 +245,10 @@ static void sysrq_handle_showallcpus(int key

[PATCH] sysrq : fix Show Regs call trace on ARM

situation,kernel will print the call trace. Since many prior discussions on the mailing lists have made it clear that get_irq_regs either just returns NULL or stale data when used outside of IRQ context,we simply avoid calling it outside of IRQ context. Signed-off-by: Jibin Xu --- drivers/tty/sy