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Merge branch 'sched/urgent' into sched/core, to pick up fixes

Bladeren bron 
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar
2016-06-27 11:35:02 +02:00
bovenliggende 807e5b8068 ea1dc6fc62
commit 630741fb60
466 gewijzigde bestanden met toevoegingen van 4148 en 2427 verwijderingen
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22
arch/x86/kernel/dumpstack.c
Bestand weergeven

@@ -42,16 +42,14 @@ void printk_address(unsigned long address)
static void
print_ftrace_graph_addr(unsigned long addr, void *data,
const struct stacktrace_ops *ops,
struct thread_info *tinfo, int *graph)
struct task_struct *task, int *graph)
{
struct task_struct *task;
unsigned long ret_addr;
int index;
if (addr != (unsigned long)return_to_handler)
return;
task = tinfo->task;
index = task->curr_ret_stack;
if (!task->ret_stack || index < *graph)
@@ -68,7 +66,7 @@ print_ftrace_graph_addr(unsigned long addr, void *data,
static inline void
print_ftrace_graph_addr(unsigned long addr, void *data,
const struct stacktrace_ops *ops,
struct thread_info *tinfo, int *graph)
struct task_struct *task, int *graph)
{ }
#endif
@@ -79,10 +77,10 @@ print_ftrace_graph_addr(unsigned long addr, void *data,
* severe exception (double fault, nmi, stack fault, debug, mce) hardware stack
*/
static inline int valid_stack_ptr(struct thread_info *tinfo,
static inline int valid_stack_ptr(struct task_struct *task,
void *p, unsigned int size, void *end)
{
void *t = tinfo;
void *t = task_stack_page(task);
if (end) {
if (p < end && p >= (end-THREAD_SIZE))
return 1;
@@ -93,14 +91,14 @@ static inline int valid_stack_ptr(struct thread_info *tinfo,
}
unsigned long
print_context_stack(struct thread_info *tinfo,
print_context_stack(struct task_struct *task,
unsigned long *stack, unsigned long bp,
const struct stacktrace_ops *ops, void *data,
unsigned long *end, int *graph)
{
struct stack_frame *frame = (struct stack_frame *)bp;
while (valid_stack_ptr(tinfo, stack, sizeof(*stack), end)) {
while (valid_stack_ptr(task, stack, sizeof(*stack), end)) {
unsigned long addr;
addr = *stack;
@@ -112,7 +110,7 @@ print_context_stack(struct thread_info *tinfo,
} else {
ops->address(data, addr, 0);
}
print_ftrace_graph_addr(addr, data, ops, tinfo, graph);
print_ftrace_graph_addr(addr, data, ops, task, graph);
}
stack++;
}
@@ -121,7 +119,7 @@ print_context_stack(struct thread_info *tinfo,
EXPORT_SYMBOL_GPL(print_context_stack);
unsigned long
print_context_stack_bp(struct thread_info *tinfo,
print_context_stack_bp(struct task_struct *task,
unsigned long *stack, unsigned long bp,
const struct stacktrace_ops *ops, void *data,
unsigned long *end, int *graph)
@@ -129,7 +127,7 @@ print_context_stack_bp(struct thread_info *tinfo,
struct stack_frame *frame = (struct stack_frame *)bp;
unsigned long *ret_addr = &frame->return_address;
while (valid_stack_ptr(tinfo, ret_addr, sizeof(*ret_addr), end)) {
while (valid_stack_ptr(task, ret_addr, sizeof(*ret_addr), end)) {
unsigned long addr = *ret_addr;
if (!__kernel_text_address(addr))
@@ -139,7 +137,7 @@ print_context_stack_bp(struct thread_info *tinfo,
break;
frame = frame->next_frame;
ret_addr = &frame->return_address;
print_ftrace_graph_addr(addr, data, ops, tinfo, graph);
print_ftrace_graph_addr(addr, data, ops, task, graph);
}
return (unsigned long)frame;

4
arch/x86/kernel/dumpstack_32.c
Bestand weergeven

@@ -61,15 +61,13 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
bp = stack_frame(task, regs);
for (;;) {
struct thread_info *context;
void *end_stack;
end_stack = is_hardirq_stack(stack, cpu);
if (!end_stack)
end_stack = is_softirq_stack(stack, cpu);
context = task_thread_info(task);
bp = ops->walk_stack(context, stack, bp, ops, data,
bp = ops->walk_stack(task, stack, bp, ops, data,
end_stack, &graph);
/* Stop if not on irq stack */

8
arch/x86/kernel/dumpstack_64.c
Bestand weergeven

@@ -153,7 +153,6 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
const struct stacktrace_ops *ops, void *data)
{
const unsigned cpu = get_cpu();
struct thread_info *tinfo;
unsigned long *irq_stack = (unsigned long *)per_cpu(irq_stack_ptr, cpu);
unsigned long dummy;
unsigned used = 0;
@@ -179,7 +178,6 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
* current stack address. If the stacks consist of nested
* exceptions
*/
tinfo = task_thread_info(task);
while (!done) {
unsigned long *stack_end;
enum stack_type stype;
@@ -202,7 +200,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
if (ops->stack(data, id) < 0)
break;
bp = ops->walk_stack(tinfo, stack, bp, ops,
bp = ops->walk_stack(task, stack, bp, ops,
data, stack_end, &graph);
ops->stack(data, "<EOE>");
/*
@@ -218,7 +216,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
if (ops->stack(data, "IRQ") < 0)
break;
bp = ops->walk_stack(tinfo, stack, bp,
bp = ops->walk_stack(task, stack, bp,
ops, data, stack_end, &graph);
/*
* We link to the next stack (which would be
@@ -240,7 +238,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
/*
* This handles the process stack:
*/
bp = ops->walk_stack(tinfo, stack, bp, ops, data, NULL, &graph);
bp = ops->walk_stack(task, stack, bp, ops, data, NULL, &graph);
put_cpu();
}
EXPORT_SYMBOL(dump_trace);

2
arch/x86/kernel/espfix_64.c
Bestand weergeven

@@ -57,7 +57,7 @@
# error "Need more than one PGD for the ESPFIX hack"
#endif
#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO)
#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO)
/* This contains the *bottom* address of the espfix stack */
DEFINE_PER_CPU_READ_MOSTLY(unsigned long, espfix_stack);

2
arch/x86/kernel/irq_32.c
Bestand weergeven

@@ -130,11 +130,9 @@ void irq_ctx_init(int cpu)
void do_softirq_own_stack(void)
{
struct thread_info *curstk;
struct irq_stack *irqstk;
u32 *isp, *prev_esp;
curstk = current_stack();
irqstk = __this_cpu_read(softirq_stack);
/* build the stack frame on the softirq stack */

12
arch/x86/kernel/kprobes/core.c
Bestand weergeven

@@ -961,7 +961,19 @@ int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
* normal page fault.
*/
regs->ip = (unsigned long)cur->addr;
/*
* Trap flag (TF) has been set here because this fault
* happened where the single stepping will be done.
* So clear it by resetting the current kprobe:
*/
regs->flags &= ~X86_EFLAGS_TF;
/*
* If the TF flag was set before the kprobe hit,
* don't touch it:
*/
regs->flags |= kcb->kprobe_old_flags;
if (kcb->kprobe_status == KPROBE_REENTER)
restore_previous_kprobe(kcb);
else