linux-ext4 - Re: [PATCH 01/13] fs/super.c: don't drop ->s_user_ns until we free struct super

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20240205-ursprung-sonnig-70018d629239@brauner>
Date: Mon, 5 Feb 2024 13:24:37 +0100
From: Christian Brauner <brauner@...nel.org>
To: Al Viro <viro@...iv.linux.org.uk>
Cc: linux-fsdevel@...r.kernel.org, 
	Linus Torvalds <torvalds@...ux-foundation.org>, linux-ext4@...r.kernel.org, linux-nfs@...r.kernel.org, 
	Miklos Szeredi <miklos@...redi.hu>, linux-cifs@...r.kernel.org
Subject: Re: [PATCH 01/13] fs/super.c: don't drop ->s_user_ns until we free
 struct super_block itself

On Sun, Feb 04, 2024 at 02:17:27AM +0000, Al Viro wrote:
> Avoids fun races in RCU pathwalk...  Same goes for freeing LSM shite
> hanging off super_block's arse.
> 
> Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
> ---

Hah, I once had the same patch for the userns bit because I was
wondering about that,

Reviewed-by: Christian Brauner <brauner@...nel.org>

(Independent of whether or not this is pretty the s_user_ns should
probably be a separate type so it can't be confused with other
namespaces when checking permissions. Maybe I should respin my series
for that if I find the time.)