linux-kernel - Re: [v2 1/7] dmaengine: idxd: fix memory leak in error handling path of idxd_setup

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Message-ID: <761ef7d1-47d0-4ada-a5d5-8e7b8bf966ea@linux.alibaba.com>
Date: Sun, 16 Feb 2025 19:04:43 +0800
From: Shuai Xue <xueshuai@...ux.alibaba.com>
To: Markus Elfring <Markus.Elfring@....de>, dmaengine@...r.kernel.org,
 Dave Jiang <dave.jiang@...el.com>,
 Vinicius Costa Gomes <vinicius.gomes@...el.com>,
 Vinod Koul <vkoul@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>
Subject: Re: [v2 1/7] dmaengine: idxd: fix memory leak in error handling path
 of idxd_setup_wqs()



在 2025/2/16 17:34, Markus Elfring 写道:
>>> Will a “stable tag” become relevant also for this patch series?
>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/stable-kernel-rules.rst?h=v6.14-rc2#n3
>>
>> I don't know if this is a real serious issue for stable kernel.
> How many resource leaks would you like to avoid with your contributions?

For this patch:

     - wqs = 8 * 8 bytes = 64 bytes
     - wq = 8 * 2400 bytes =  19200 bytes
     - opcap_bmap = 256 bit / 8 = 32 bytes

Around 18 KB.


> 
> Regards,
> Markus

Thanks.
Shuai