Messages in this thread | | | Date | Wed, 29 Mar 2017 15:42:06 +0900 | From | Sergey Senozhatsky <> | Subject | Re: [RFC]mm/zsmalloc,: trigger BUG_ON in function zs_map_object. |
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On (03/29/17 09:20), Minchan Kim wrote: > Hello, > > On Tue, Mar 28, 2017 at 03:20:22PM +0800, Yisheng Xie wrote: > > Hi, all, > > > > We had backport the no-lru migration to linux-4.1, meanwhile change the > > ZS_MAX_ZSPAGE_ORDER to 3. Then we met a BUG_ON(!page[1]). > > Hmm, I don't know how you backported. > > There isn't any problem with default ZS_MAX_ZSPAGE_ORDER. Right? > So, it happens only if you changed it to 3?
I agree with Minchan. too much things could have gone wrong during the backport.
> Could you tell me what is your base kernel? and what zram/zsmalloc > version(ie, from what kernel version) you backported to your > base kernel?
agree again.
Yisheng, do you have this commit applied?
commit c102f07ca0b04f2cb49cfc161c83f6239d17f491 Author: Junil Lee <junil0814.lee@lge.com> Date: Wed Jan 20 14:58:18 2016 -0800
zsmalloc: fix migrate_zspage-zs_free race condition
-ss
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