Re: Re: Re: [PATCH] fix race condition between device_del and device_add

Re: Re: Re: [PATCH] fix race condition between device_del and device_add

[EunTaik Lee]

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The problem was on 3.10.49.

I carefully looked up the patches again and found out that there was
a patch on 3.18 that will solve the problem

commit	e4a60d139060975eb956717e4f63ae348d4d8cc5
sysfs: driver core: Fix glue dir race condition by gdp_mutex

Sorry for bothering you.

Thanks,
Eun Taik Leeÿôèº{.nÇ+‰·Ÿ®‰­†+%ŠËÿ±éݶ\x17¥Šwÿº{.nÇ+‰·¥Š{±þG«éÿŠ{ayº\x1dʇڙë,j\a­¢f£¢·hšïêÿ‘êçz_è®\x03(­éšŽŠÝ¢j"ú\x1a¶^[m§ÿÿ¾\a«þG«éÿ¢¸?™¨è­Ú&£ø§~á¶iO•æ¬z·švØ^\x14\x04\x1a¶^[m§ÿÿÃ\fÿ¶ìÿ¢¸?–I¥

Re: Re: Re: [PATCH] fix race condition between device_del and device_add

[gregkh]

On Mon, Mar 30, 2015 at 02:02:27PM +0000, EunTaik Lee wrote:
> 
> The problem was on 3.10.49.
> 
> I carefully looked up the patches again and found out that there was
> a patch on 3.18 that will solve the problem
> 
> commit	e4a60d139060975eb956717e4f63ae348d4d8cc5
> sysfs: driver core: Fix glue dir race condition by gdp_mutex

Yes, you need a "real" lock to fix this type of race condition, I
thought we had fixed this a while ago, thanks for verifying it.

greg k-h