linux-kernel - Re: [PATCH 1/2] dev-core: fix build break when DEBUG is enabled

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: <20130815163705.GA15688@kroah.com>
Date:	Thu, 15 Aug 2013 09:37:05 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Dmitry Kasatkin <d.kasatkin@...sung.com>
Cc:	linux-kernel@...r.kernel.org, sarah.a.sharp@...ux.intel.com,
	dmitry.kasatkin@...il.com, stable@...r.kernel.org
Subject: Re: [PATCH 1/2] dev-core: fix build break when DEBUG is enabled

On Thu, Aug 15, 2013 at 07:04:54PM +0300, Dmitry Kasatkin wrote:
> When DEBUG is defined, dev_dbg_ratelimited uses dynamic debug data
> structures even when CONFIG_DYNAMIC_DEBUG is not defined.
> It leads to build break.
> For example, when I try to use dev_dbg_ratelimited in USB code and
> CONFIG_USB_DEBUG is enabled, but CONFIG_DYNAMIC_DEBUG is not, I get:
> 
>   CC [M]  drivers/usb/host/xhci-ring.o
>   drivers/usb/host/xhci-ring.c: In function ‘xhci_queue_intr_tx’:
>   drivers/usb/host/xhci-ring.c:3059:3: error: implicit declaration of function ‘DEFINE_DYNAMIC_DEBUG_METADATA’ [-Werror=implicit-function-declaration]
>   drivers/usb/host/xhci-ring.c:3059:3: error: ‘descriptor’ undeclared (first use in this function)
>   drivers/usb/host/xhci-ring.c:3059:3: note: each undeclared identifier is reported only once for each function it appears in
>   drivers/usb/host/xhci-ring.c:3059:3: error: implicit declaration of function ‘__dynamic_pr_debug’ [-Werror=implicit-function-declaration]
>   drivers/usb/host/xhci-ring.c: In function ‘xhci_queue_isoc_tx_prepare’:
>   drivers/usb/host/xhci-ring.c:3847:3: error: ‘descriptor’ undeclared (first use in this function)
>   cc1: some warnings being treated as errors
>   make[2]: *** [drivers/usb/host/xhci-ring.o] Error 1
>   make[1]: *** [drivers/usb/host] Error 2
>   make: *** [drivers/usb/] Error 2
> 
> This patch separates definition for CONFIG_DYNAMIC_DEBUG and DEBUG cases.
> 
> Signed-off-by: Dmitry Kasatkin <d.kasatkin@...sung.com>
> Cc: stable@...r.kernel.org

How is this a stable issue?  I don't see how the rules listed in
Documentation/stable_kernel_rules.txt apply here, what am I missing?

Not to say your patch isn't correct, just that it's not stable material,
right?

thanks,

greg k-h
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/