linux-kernel - Re: [PATCH] ata: libata-pmp: Fix a possible data race in sata_pmp_handle_link

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Message-ID: <20180508142052.GK2368884@devbig577.frc2.facebook.com>
Date:   Tue, 8 May 2018 07:20:52 -0700
From:   Tejun Heo <tj@...nel.org>
To:     Jia-Ju Bai <baijiaju1990@...il.com>
Cc:     linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ata: libata-pmp: Fix a possible data race in
 sata_pmp_handle_link_fail

On Tue, May 08, 2018 at 04:21:40PM +0800, Jia-Ju Bai wrote:
> The write operation to "link->flags" is protected by
> the lock on line 898, but the read operation to
> this data on line 892 is not protected by the lock.
> Thus, there may exist a data race for "link->flags".
> 
> To fix this data race, the read operation to "link->flags" 
> should be also protected by the lock.

Same as the previous patch.

Thanks.

-- 
tejun