linux-kernel - Re: [PATCH] NCR5380: Fix a possible sleep-in-atomic bug in NCR5380_poll

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Message-ID: <20fa69d8-7bfe-0ce4-b547-cc7372726bde@163.com>
Date:   Tue, 12 Dec 2017 11:49:32 +0800
From:   Jia-Ju Bai <baijiaju1990@....com>
To:     Finn Thain <fthain@...egraphics.com.au>
Cc:     schmitzmic@...il.com, jejb@...ux.vnet.ibm.com,
        martin.petersen@...cle.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jia-Ju Bai <baijiaju1990@...il.com>
Subject: Re: [PATCH] NCR5380: Fix a possible sleep-in-atomic bug in
 NCR5380_poll_politely2

Thanks for your reply :)

On 2017/12/12 11:38, Finn Thain wrote:
> On Tue, 12 Dec 2017, Jia-Ju Bai wrote:
>
>> From: Jia-Ju Bai <baijiaju1990@...il.com>
>>
>> The kernel module may sleep under a spinlock.
> The spinlock is always taken in irq mode, and the
> schedule_timeout_uninterruptible() is conditional on !irqs_disabled().
>
I think I ignore this check, which causes a false bug report, sorry.


Thanks,
Jia-Ju Bai