linux-kernel - Re: [PATCH v3] xen: Remove dependency between pciback and privcmd

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]

Message-ID: <1ca6e2a1-2eaa-4817-92b2-d56ea18869a1@suse.com>
Date: Fri, 11 Oct 2024 13:16:23 +0200
From: Juergen Gross <jgross@...e.com>
To: Jiqian Chen <Jiqian.Chen@....com>,
 Stefano Stabellini <sstabellini@...nel.org>,
 Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>
Cc: xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
 Marek Marczykowski-Górecki <marmarek@...isiblethingslab.com>
Subject: Re: [PATCH v3] xen: Remove dependency between pciback and privcmd

On 11.10.24 05:42, Jiqian Chen wrote:
> Commit 2fae6bb7be32 ("xen/privcmd: Add new syscall to get gsi from dev")
> adds a weak reverse dependency to the config XEN_PRIVCMD definition, that
> dependency causes xen-privcmd can't be loaded on domU, because dependent
> xen-pciback isn't always be loaded successfully on domU.
> 
> To solve above problem, remove that dependency, and do not call
> pcistub_get_gsi_from_sbdf() directly, instead add a hook in
> drivers/xen/apci.c, xen-pciback register the real call function, then in
> privcmd_ioctl_pcidev_get_gsi call that hook.
> 
> Fixes: 2fae6bb7be32 ("xen/privcmd: Add new syscall to get gsi from dev")
> Reported-by: Marek Marczykowski-Górecki <marmarek@...isiblethingslab.com>
> Signed-off-by: Jiqian Chen <Jiqian.Chen@....com>

Reviewed-by: Juergen Gross <jgross@...e.com>


Juergen


Download attachment "OpenPGP_0xB0DE9DD628BF132F.asc" of type "application/pgp-keys" (3684 bytes)

Download attachment "OpenPGP_signature.asc" of type "application/pgp-signature" (496 bytes)