Messages in this thread | | | Date | Sat, 18 Jan 2014 16:41:37 +0800 | From | Jianguo Wu <> | Subject | Re: [PATCH] mm/kmemleak: add support for re-enable kmemleak at runtime |
| |
On 2014/1/17 20:04, Catalin Marinas wrote:
> On Fri, Jan 17, 2014 at 09:40:02AM +0000, Jianguo Wu wrote: >> Now disabling kmemleak is an irreversible operation, but sometimes >> we may need to re-enable kmemleak at runtime. So add a knob to enable >> kmemleak at runtime: >> echo on > /sys/kernel/debug/kmemleak > > It is irreversible for very good reason: once it missed the initial > memory allocations, there is no way for kmemleak to build the object > reference graph and you'll get lots of false positives, pretty much > making it unusable. >
Do you mean we didn't trace memory allocations during kmemleak disable period, and these memory may reference to new allocated objects after re-enable?
| |