diff options
author | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-02-04 09:51:49 -0500 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-02-04 09:51:49 -0500 |
commit | 2fb20e2e35cd1455d022ab7a553d7f1663ffbdeb (patch) | |
tree | 4b3bb0f76c15264fe7d4cced91127f3d96ff31f5 /arch/ia64/kernel/ptrace.c | |
parent | 9cb543124a2d31af42ce61a4c30765ecc8e5f1fa (diff) | |
parent | 5b91ab0abc957145c3ff6be03eb9a3901797019f (diff) |
Merge branch 'for-rmk/broadcast' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into devel-stable
Diffstat (limited to 'arch/ia64/kernel/ptrace.c')
-rw-r--r-- | arch/ia64/kernel/ptrace.c | 27 |
1 files changed, 0 insertions, 27 deletions
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c index 4265ff64219b..b7a5fffe0924 100644 --- a/arch/ia64/kernel/ptrace.c +++ b/arch/ia64/kernel/ptrace.c | |||
@@ -672,33 +672,6 @@ ptrace_attach_sync_user_rbs (struct task_struct *child) | |||
672 | read_unlock(&tasklist_lock); | 672 | read_unlock(&tasklist_lock); |
673 | } | 673 | } |
674 | 674 | ||
675 | static inline int | ||
676 | thread_matches (struct task_struct *thread, unsigned long addr) | ||
677 | { | ||
678 | unsigned long thread_rbs_end; | ||
679 | struct pt_regs *thread_regs; | ||
680 | |||
681 | if (ptrace_check_attach(thread, 0) < 0) | ||
682 | /* | ||
683 | * If the thread is not in an attachable state, we'll | ||
684 | * ignore it. The net effect is that if ADDR happens | ||
685 | * to overlap with the portion of the thread's | ||
686 | * register backing store that is currently residing | ||
687 | * on the thread's kernel stack, then ptrace() may end | ||
688 | * up accessing a stale value. But if the thread | ||
689 | * isn't stopped, that's a problem anyhow, so we're | ||
690 | * doing as well as we can... | ||
691 | */ | ||
692 | return 0; | ||
693 | |||
694 | thread_regs = task_pt_regs(thread); | ||
695 | thread_rbs_end = ia64_get_user_rbs_end(thread, thread_regs, NULL); | ||
696 | if (!on_kernel_rbs(addr, thread_regs->ar_bspstore, thread_rbs_end)) | ||
697 | return 0; | ||
698 | |||
699 | return 1; /* looks like we've got a winner */ | ||
700 | } | ||
701 | |||
702 | /* | 675 | /* |
703 | * Write f32-f127 back to task->thread.fph if it has been modified. | 676 | * Write f32-f127 back to task->thread.fph if it has been modified. |
704 | */ | 677 | */ |