linux-kernel - Re: [PATCH] [SCSI] iscsi_boot_sysfs: Fix a memory leak in iscsi_boot_destroy

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]

Date:	Tue, 10 Dec 2013 14:03:51 +0800
From:	Ethan Zhao <ethan.kernel@...il.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc:	michaelc@...wisc.edu, pjones@...hat.com,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] [SCSI] iscsi_boot_sysfs: Fix a memory leak in iscsi_boot_destroy_kset()

Konrad,

 boot_kset was allocated when module loaded by
ibft_init()
  iscsi_boot_create_kset()
     kzalloc()

but wasn't freed when module unloaded by
ibft_exit()
   ibft_cleanup()
     iscsi_boot_destroy_kset()

Thanks,
Ethan

On Tue, Dec 10, 2013 at 5:30 AM, Konrad Rzeszutek Wilk
<konrad.wilk@...cle.com> wrote:
> On Mon, Dec 09, 2013 at 05:37:11PM +0800, Ethan Zhao wrote:
>> From: "Ethan Zhao" <ethan.kernel@...il.com>
>>
>> Load and unload iscsi_ibft module will cause kernel memory leak, fix it
>> in scsi/iscsi_boot_sysfs.c iscsi_boot_destroy_kset().
>>
>
> Is there a stack trace?
>> Signed-off-by: Ethan Zhao <ethan.kernel@...il.com>
>> ---
>>  drivers/scsi/iscsi_boot_sysfs.c | 1 +
>>  1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/scsi/iscsi_boot_sysfs.c b/drivers/scsi/iscsi_boot_sysfs.c
>> index 14c1c8f..680bf6f 100644
>> --- a/drivers/scsi/iscsi_boot_sysfs.c
>> +++ b/drivers/scsi/iscsi_boot_sysfs.c
>> @@ -490,5 +490,6 @@ void iscsi_boot_destroy_kset(struct iscsi_boot_kset *boot_kset)
>>               iscsi_boot_remove_kobj(boot_kobj);
>>
>>       kset_unregister(boot_kset->kset);
>> +     kfree(boot_kset);
>>  }
>>  EXPORT_SYMBOL_GPL(iscsi_boot_destroy_kset);
>> --
>> 1.8.3.4 (Apple Git-47)
>>
--
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/