diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index b9da093e03417af345000ec2b16a9ff8072d35d6..a0099be4311ae96df77caa8bde85f61fcd3c035d 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -101,10 +101,16 @@ static void dump_instr(const char *lvl, struct pt_regs *regs) void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk) { struct stackframe frame; - int skip; + int skip = 0; pr_debug("%s(regs = %p tsk = %p)\n", __func__, regs, tsk); + if (regs) { + if (user_mode(regs)) + return; + skip = 1; + } + if (!tsk) tsk = current; @@ -125,7 +131,6 @@ void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk) frame.graph = tsk->curr_ret_stack; #endif - skip = !!regs; printk("Call trace:\n"); do { /* skip until specified stack frame */ @@ -175,15 +180,13 @@ static int __die(const char *str, int err, struct pt_regs *regs) return ret; print_modules(); - __show_regs(regs); pr_emerg("Process %.*s (pid: %d, stack limit = 0x%p)\n", TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), end_of_stack(tsk)); + show_regs(regs); - if (!user_mode(regs)) { - dump_backtrace(regs, tsk); + if (!user_mode(regs)) dump_instr(KERN_EMERG, regs); - } return ret; }