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hw-breakpoints: Tag ptrace breakpoint as exclude_kernel

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Tag ptrace breakpoints with the exclude_kernel attribute set. This
will make it easier to set generic policies on breakpoints, when it
comes to ensure nobody unpriviliged try to breakpoint on the kernel.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Cc: K. Prasad <prasad@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Frederic Weisbecker
2010-04-22 05:05:45 +02:00
parent d00a47cce5
commit 73266fc1df
3 changed files with 8 additions and 2 deletions
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2
arch/x86/kernel/ptrace.c
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@@ -688,7 +688,7 @@ static int ptrace_set_breakpoint_addr(struct task_struct *tsk, int nr,
struct perf_event_attr attr;
if (!t->ptrace_bps[nr]) {
hw_breakpoint_init(&attr);
ptrace_breakpoint_init(&attr);
/*
* Put stub len and type to register (reserve) an inactive but
* correct bp