Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 9e793ab8 authored by Vladimir Murzin's avatar Vladimir Murzin Committed by Catalin Marinas
Browse files

arm64: show unhandled SP/PC alignment faults 



Report unhandled SP/PC alignment faults if the show_unhandled_signals
variable is set (via /proc/sys/debug/exception-trace).

Signed-off-by: default avatarVladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 6f1a6ae8

arch/arm64/mm/fault.c

+8 −1
Original line number Diff line number Diff line
@@ -478,12 +478,19 @@ asmlinkage void __exception do_sp_pc_abort(unsigned long addr, 
					   struct pt_regs *regs)

{

	struct siginfo info;

	struct task_struct *tsk = current;



	if (show_unhandled_signals && unhandled_signal(tsk, SIGBUS))

		pr_info_ratelimited("%s[%d]: %s exception: pc=%p sp=%p\n",

				    tsk->comm, task_pid_nr(tsk),

				    esr_get_class_string(esr), (void *)regs->pc,

				    (void *)regs->sp);



	info.si_signo = SIGBUS;

	info.si_errno = 0;

	info.si_code  = BUS_ADRALN;

	info.si_addr  = (void __user *)addr;

	arm64_notify_die("", regs, &info, esr);

	arm64_notify_die("Oops - SP/PC alignment exception", regs, &info, esr);

}



static struct fault_info debug_fault_info[] = {