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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: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Vladimir Murzin 2015-06-19 15:28:16 +01:00 committed by Catalin Marinas
parent 6f1a6ae87c
commit 9e793ab84e
1 changed files with 8 additions and 1 deletions
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9
arch/arm64/mm/fault.c
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@ -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[] = {