diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/kernel/uprobes.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c index f4464b1b9435..b3c2a92cce6c 100644 --- a/arch/x86/kernel/uprobes.c +++ b/arch/x86/kernel/uprobes.c | |||
@@ -394,6 +394,7 @@ struct uprobe_xol_ops { | |||
394 | bool (*emulate)(struct arch_uprobe *, struct pt_regs *); | 394 | bool (*emulate)(struct arch_uprobe *, struct pt_regs *); |
395 | int (*pre_xol)(struct arch_uprobe *, struct pt_regs *); | 395 | int (*pre_xol)(struct arch_uprobe *, struct pt_regs *); |
396 | int (*post_xol)(struct arch_uprobe *, struct pt_regs *); | 396 | int (*post_xol)(struct arch_uprobe *, struct pt_regs *); |
397 | void (*abort)(struct arch_uprobe *, struct pt_regs *); | ||
397 | }; | 398 | }; |
398 | 399 | ||
399 | static inline int sizeof_long(void) | 400 | static inline int sizeof_long(void) |
@@ -444,9 +445,15 @@ static int default_post_xol_op(struct arch_uprobe *auprobe, struct pt_regs *regs | |||
444 | return 0; | 445 | return 0; |
445 | } | 446 | } |
446 | 447 | ||
448 | static void default_abort_op(struct arch_uprobe *auprobe, struct pt_regs *regs) | ||
449 | { | ||
450 | handle_riprel_post_xol(auprobe, regs, NULL); | ||
451 | } | ||
452 | |||
447 | static struct uprobe_xol_ops default_xol_ops = { | 453 | static struct uprobe_xol_ops default_xol_ops = { |
448 | .pre_xol = default_pre_xol_op, | 454 | .pre_xol = default_pre_xol_op, |
449 | .post_xol = default_post_xol_op, | 455 | .post_xol = default_post_xol_op, |
456 | .abort = default_abort_op, | ||
450 | }; | 457 | }; |
451 | 458 | ||
452 | static bool branch_is_call(struct arch_uprobe *auprobe) | 459 | static bool branch_is_call(struct arch_uprobe *auprobe) |
@@ -820,10 +827,11 @@ void arch_uprobe_abort_xol(struct arch_uprobe *auprobe, struct pt_regs *regs) | |||
820 | { | 827 | { |
821 | struct uprobe_task *utask = current->utask; | 828 | struct uprobe_task *utask = current->utask; |
822 | 829 | ||
823 | current->thread.trap_nr = utask->autask.saved_trap_nr; | 830 | if (auprobe->ops->abort) |
824 | handle_riprel_post_xol(auprobe, regs, NULL); | 831 | auprobe->ops->abort(auprobe, regs); |
825 | instruction_pointer_set(regs, utask->vaddr); | ||
826 | 832 | ||
833 | current->thread.trap_nr = utask->autask.saved_trap_nr; | ||
834 | regs->ip = utask->vaddr; | ||
827 | /* clear TF if it was set by us in arch_uprobe_pre_xol() */ | 835 | /* clear TF if it was set by us in arch_uprobe_pre_xol() */ |
828 | if (!utask->autask.saved_tf) | 836 | if (!utask->autask.saved_tf) |
829 | regs->flags &= ~X86_EFLAGS_TF; | 837 | regs->flags &= ~X86_EFLAGS_TF; |