linux-kernel - Re: [PATCH -next v2] scsi: sd: Fix unsigned expression compared with zero in sd_spinup

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Message-ID: <6183a803-ced8-48f8-abb5-3fcfab055bfa@acm.org>
Date: Thu, 4 Jul 2024 10:43:47 -0700
From: Bart Van Assche <bvanassche@....org>
To: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>,
 James.Bottomley@...senPartnership.com
Cc: martin.petersen@...cle.com, linux-scsi@...r.kernel.org,
 linux-kernel@...r.kernel.org, Abaci Robot <abaci@...ux.alibaba.com>,
 Mike Christie <michael.christie@...cle.com>
Subject: Re: [PATCH -next v2] scsi: sd: Fix unsigned expression compared with
 zero in sd_spinup_disk()

On 7/3/24 8:14 PM, Jiapeng Chong wrote:
> The return value from the call to scsi_execute_cmd() is int. However, the
> return value is being assigned to an unsigned int variable 'the_result',
> so making 'the_result' an int.
> 
> ./drivers/scsi/sd.c:2333:6-16: WARNING: Unsigned expression compared with zero: the_result > 0.
> 
> Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9463
> Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>

The following is missing from this patch:
- An explanation of why this patch fixes a read of uninitialized data.
- Fixed: and Cc: stable tags.

Thanks,

Bart.