Re: [PATCH] Kprobes: Fix locking imbalance in kretprobes

From: Ingo Molnar
Date: Wed Mar 18 2009 - 07:52:46 EST



* Ananth N Mavinakayanahalli <ananth@xxxxxxxxxx> wrote:

> Fix locking imbalance in kretprobes:
>
> =====================================
> [ BUG: bad unlock balance detected! ]
> -------------------------------------
> kthreadd/2 is trying to release lock (&rp->lock) at:
> [<c06b3080>] pre_handler_kretprobe+0xea/0xf4

Applied it to tip:tracing/kprobes, thanks Ananth!

The bug has been introduced in v2.6.27-rc1 so i've marked it for a
-stable backport for .27.x, 28.x and 29.x.

Ingo
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