linux-kernel - Re: [PATCH] samples/hw_breakpoint: Fix kernel BUG 'invalid opcode: 0000'

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Date:   Tue, 25 Jul 2023 21:38:48 +0800
From:   Rong Tao <rtoax@...mail.com>
To:     mcgrof@...nel.org
Cc:     ast@...nel.org, frederic@...nel.org, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, mbenes@...e.cz, mhiramat@...nel.org,
        pmladek@...e.com, prasad@...ux.vnet.ibm.com, qperret@...gle.com,
        rongtao@...tc.cn, rtoax@...mail.com, tglx@...utronix.de,
        will@...nel.org
Subject: Re: [PATCH] samples/hw_breakpoint: Fix kernel BUG 'invalid opcode: 0000'

Hi Luis

The 'kernel test robot' report an error [0]:

	>> samples/hw_breakpoint/data_breakpoint.c:73:2: error: call to undeclared function '__symbol_put'; 
	ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
	           __symbol_put(ksym_name);
	           ^
	   samples/hw_breakpoint/data_breakpoint.c:73:2: note: did you mean '__symbol_get'?
	   include/linux/module.h:301:7: note: '__symbol_get' declared here
	   void *__symbol_get(const char *symbol);
	         ^
	   1 error generated.

Do I need to do something? It seems that no changes need to be made from the
mainline code.

[0] https://lore.kernel.org/oe-kbuild-all/202307250926.06DQZjVe-lkp@intel.com/

Rong