Messages in this thread Patch in this message | | | From | Yang Bo <> | Subject | [PATCH] x86/kprobe: unbalanced preempt counter in kprobe_{fault,debug}_handler | Date | Mon, 15 Jan 2018 12:28:28 +0800 |
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Don't see any preempt_disable() in do_debug() and do_page_fault(), there is no need to call preempt_enable_no_resched() here.
Signed-off-by: Yang Bo <yangbo@deepin.com> --- arch/x86/kernel/kprobes/core.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c index 1ea5c9caa8f1..6f2c43e33674 100644 --- a/arch/x86/kernel/kprobes/core.c +++ b/arch/x86/kernel/kprobes/core.c @@ -969,7 +969,6 @@ int kprobe_debug_handler(struct pt_regs *regs) } reset_current_kprobe(); out: - preempt_enable_no_resched(); /* * if somebody else is singlestepping across a probe point, flags @@ -1017,7 +1016,6 @@ int kprobe_fault_handler(struct pt_regs *regs, int trapnr) restore_previous_kprobe(kcb); else reset_current_kprobe(); - preempt_enable_no_resched(); } else if (kcb->kprobe_status == KPROBE_HIT_ACTIVE || kcb->kprobe_status == KPROBE_HIT_SSDONE) { /* -- 2.15.1
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