linux-kernel - dma-api debugfs directory is not created since debugfs is not initialized

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-next>] [day] [month] [year] [list]

Message-ID: <YIf2w1navFNeYjMS@Red>
Date:   Tue, 27 Apr 2021 13:34:27 +0200
From:   Corentin Labbe <clabbe.montjoie@...il.com>
To:     gregkh@...uxfoundation.org, rafael@...nel.org, hch@....de,
        m.szyprowski@...sung.com, robin.murphy@....com
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: dma-api debugfs directory is not created since debugfs is not
 initialized

Hello

I try to debug some DMA problem on next-20210427, and so I have enabled CONFIG_DMA_API_DEBUG=y.
But the dma-api directory does show up in debugfs, but lot of other directory exists in it.

After debugging it seems due to commit 56348560d495 ("debugfs: do not attempt to create a new file before the filesystem is initalized")
Reverting the commit permit to "dma-api" debugfs to be found. (but seems not the right way to fix it).

Regards