linux-kernel - Re: [PATCH] scsi: megaraid: check kzalloc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <519F3332.1010300@huawei.com>
Date:	Fri, 24 May 2013 17:30:26 +0800
From:	Libo Chen <clbchenlibo.chen@...wei.com>
To:	Santosh Y <santoshsy@...il.com>
CC:	<megaraidlinux@....com>, <JBottomley@...allels.com>,
	<linux-scsi@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
	<kashyap.desai@....com>, <aradford@...il.com>,
	Li Zefan <lizefan@...wei.com>
Subject: Re: [PATCH] scsi: megaraid: check kzalloc

On 2013/5/24 11:20, Santosh Y wrote:
> On Fri, May 24, 2013 at 7:52 AM, Libo Chen <clbchenlibo.chen@...wei.com> wrote:
>>
>> we should check kzalloc, avoid to hit oops
>>
>> Signed-off-by: Libo Chen <libo.chen@...wei.com>
>> ---
>>  drivers/scsi/megaraid.c |    4 ++++
>>  1 files changed, 4 insertions(+), 0 deletions(-)
>>
>> diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
>> index 846f475..195b095 100644
>> --- a/drivers/scsi/megaraid.c
>> +++ b/drivers/scsi/megaraid.c
>> @@ -4162,6 +4162,10 @@ mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
>>
>>         sdev = kzalloc(sizeof(struct scsi_device), GFP_KERNEL);
>>         scmd->device = sdev;
>                               ^^^^^^
> I guess assigning after the NULL check of 'sdev' is more appropriate.

Ah, there is a little different.  ok, I will update.


Thanks,

Libo

> 
>> +       if (!scmd->device) {
>> +               scsi_free_command(GFP_KERNEL, scmd);
>> +               return -ENOMEM;
>> +       }
>>
>>         memset(adapter->int_cdb, 0, sizeof(adapter->int_cdb));
>>         scmd->cmnd = adapter->int_cdb;
>> --
>> 1.7.1
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
>> the body of a message to majordomo@...r.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
> 
> 


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/