linux-kernel - Re: [PATCH] xhci: Fix Link TRB DMA in command ring stopped completion event

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: <2024101914-upheld-dander-d1af@gregkh>
Date: Sat, 19 Oct 2024 08:34:24 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Faisal Hassan <quic_faisalh@...cinc.com>
Cc: Mathias Nyman <mathias.nyman@...el.com>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH] xhci: Fix Link TRB DMA in command ring stopped
 completion event

On Sat, Oct 19, 2024 at 01:29:53AM +0530, Faisal Hassan wrote:
> During the aborting of a command, the software receives a command
> completion event for the command ring stopped, with the TRB pointing
> to the next TRB after the aborted command.
> 
> If the command we abort is located just before the Link TRB in the
> command ring, then during the 'command ring stopped' completion event,
> the xHC gives the Link TRB in the event's cmd DMA, which causes a
> mismatch in handling command completion event.
> 
> To handle this situation, an additional check has been added to ignore
> the mismatch error and continue the operation.
> 
> Cc: stable@...r.kernel.org
> Signed-off-by: Faisal Hassan <quic_faisalh@...cinc.com>

What commit id does this fix?

thanks,

greg k-h