Re: [RFC][PATCH] fix d_absolute_path() interplay with fsmount()

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To: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Subject: Re: [RFC][PATCH] fix d_absolute_path() interplay with fsmount()
From: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 30 Aug 2019 19:11:07 +0900
Cc: John Johansen <john.johansen@xxxxxxxxxxxxx>, "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>, David Howells <dhowells@xxxxxxxxxx>, linux-api@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, torvalds@xxxxxxxxxxxxxxxxxxxx, linux-security-module@xxxxxxxxxxxxxxx
In-reply-to: <20190822035134.GK1131@ZenIV.linux.org.uk>
User-agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0

On 2019/08/22 12:51, Al Viro wrote:
> [bringing a private thread back to the lists]
> 
> There's a bug in interplay of fsmount() and d_absolute_path().
> Namely, the check in d_absolute_path() treats the
> not-yet-attached mount as "reached absolute root".

I think you can send this patch to linux-next.

References:
- Re: [PATCH 02/10] vfs: syscall: Add move_mount(2) to move mounts around
  - From: Al Viro
- Re: [PATCH 02/10] vfs: syscall: Add move_mount(2) to move mounts around
  - From: Eric W. Biederman
- Re: [PATCH 02/10] vfs: syscall: Add move_mount(2) to move mounts around
  - From: Al Viro
- Re: [PATCH 02/10] vfs: syscall: Add move_mount(2) to move mounts around
  - From: Al Viro
- Re: [PATCH 02/10] vfs: syscall: Add move_mount(2) to move mounts around
  - From: Eric W. Biederman
- Re: [PATCH 02/10] vfs: syscall: Add move_mount(2) to move mounts around
  - From: Tetsuo Handa
- Re: [PATCH 02/10] vfs: syscall: Add move_mount(2) to move mounts around
  - From: Tetsuo Handa
- Re: [PATCH 02/10] vfs: syscall: Add move_mount(2) to move mounts around
  - From: John Johansen
- Re: [PATCH 02/10] vfs: syscall: Add move_mount(2) to move mounts around
  - From: Tetsuo Handa
- Re: [PATCH 02/10] vfs: syscall: Add move_mount(2) to move mounts around
  - From: Tetsuo Handa
- [RFC][PATCH] fix d_absolute_path() interplay with fsmount()
  - From: Al Viro

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