linux-kernel - Re: [PATCH v6 5/5] kdb: Adapt kdb_msg

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Message-ID: <aPIWfjBhFPjOmESL@pathway.suse.cz>
Date: Fri, 17 Oct 2025 12:12:14 +0200
From: Petr Mladek <pmladek@...e.com>
To: kernel test robot <lkp@...el.com>
Cc: Marcos Paulo de Souza <mpdesouza@...e.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	John Ogness <john.ogness@...utronix.de>,
	Sergey Senozhatsky <senozhatsky@...omium.org>,
	Jason Wessel <jason.wessel@...driver.com>,
	Daniel Thompson <danielt@...nel.org>,
	Douglas Anderson <dianders@...omium.org>, llvm@...ts.linux.dev,
	oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	kgdb-bugreport@...ts.sourceforge.net
Subject: Re: [PATCH v6 5/5] kdb: Adapt kdb_msg_write to work with NBCON
 consoles

On Fri 2025-10-17 10:17:37, kernel test robot wrote:
> Hi Marcos,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on 3a8660878839faadb4f1a6dd72c3179c1df56787]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Marcos-Paulo-de-Souza/printk-nbcon-Export-console_is_usable/20251016-225503
> base:   3a8660878839faadb4f1a6dd72c3179c1df56787
> patch link:    https://lore.kernel.org/r/20251016-nbcon-kgdboc-v6-5-866aac60a80e%40suse.com
> patch subject: [PATCH v6 5/5] kdb: Adapt kdb_msg_write to work with NBCON consoles
> config: i386-buildonly-randconfig-006-20251017 (https://download.01.org/0day-ci/archive/20251017/202510171023.YREXxhMK-lkp@intel.com/config)
> compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251017/202510171023.YREXxhMK-lkp@intel.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@...el.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202510171023.YREXxhMK-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
> >> kernel/debug/kdb/kdb_io.c:612:22: error: incompatible pointer types passing 'struct nbcon_write_context *' to parameter of type 'struct console *' [-Werror,-Wincompatible-pointer-types]
>      612 |                         nbcon_kdb_release(&wctxt);
>          |                                           ^~~~~~
>    include/linux/console.h:667:54: note: passing argument to parameter 'con' here
>      667 | static inline void nbcon_kdb_release(struct console *con) { }

This should be:

static inline void nbcon_kdb_release(struct nbcon_write_context *wctxt) { }

Again, no need for v7. I could fix this when committing the patch.

Best Regards,
Petr