diff options
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/irq/irqdesc.c | 8 | ||||
-rw-r--r-- | kernel/ptrace.c | 3 |
2 files changed, 9 insertions, 2 deletions
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c index c52b737ab8e31..a92b33593b8d0 100644 --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -680,6 +680,8 @@ int __handle_domain_irq(struct irq_domain *domain, unsigned int hwirq, * @hwirq: The HW irq number to convert to a logical one * @regs: Register file coming from the low-level handling code * + * This function must be called from an NMI context. + * * Returns: 0 on success, or -EINVAL if conversion has failed */ int handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq, @@ -689,7 +691,10 @@ int handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq, unsigned int irq; int ret = 0; - nmi_enter(); + /* + * NMI context needs to be setup earlier in order to deal with tracing. + */ + WARN_ON(!in_nmi()); irq = irq_find_mapping(domain, hwirq); @@ -702,7 +707,6 @@ int handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq, else ret = -EINVAL; - nmi_exit(); set_irq_regs(old_regs); return ret; } diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 705887f63288d..83a531cea2f37 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -116,6 +116,9 @@ void __ptrace_unlink(struct task_struct *child) BUG_ON(!child->ptrace); clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); +#ifdef TIF_SYSCALL_EMU + clear_tsk_thread_flag(child, TIF_SYSCALL_EMU); +#endif child->parent = child->real_parent; list_del_init(&child->ptrace_entry); |