[peterz-queue:x86/static_call 13/18] arch/x86/kernel/static_call.c:38 __static_call_transform() error: uninitialized symbol 'code'.

[peterz-queue:x86/static_call 13/18] arch/x86/kernel/static_call.c:38 __static_call_transform() error: uninitialized symbol 'code'.

[kernel test robot]

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CC: kbuild-all(a)lists.01.org
TO: Peter Zijlstra <peterz@infradead.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/static_call
head:   9c45f6868feeab595271da9e16633a48bffd7930
commit: c2406e1457f0ae2887ebf540d2658885fa7e8416 [13/18] static_call: Add static_call_cond()
:::::: branch date: 10 hours ago
:::::: commit date: 10 hours ago
config: x86_64-randconfig-m001-20200818 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

smatch warnings:
arch/x86/kernel/static_call.c:38 __static_call_transform() error: uninitialized symbol 'code'.

# https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?id=c2406e1457f0ae2887ebf540d2658885fa7e8416
git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git
git fetch --no-tags peterz-queue x86/static_call
git checkout c2406e1457f0ae2887ebf540d2658885fa7e8416
vim +/code +38 arch/x86/kernel/static_call.c

c2406e1457f0ae Peter Zijlstra 2019-10-03  13  
c2406e1457f0ae Peter Zijlstra 2019-10-03  14  static void __static_call_transform(void *insn, enum insn_type type, void *func)
e73ac4b6b2e16a Josh Poimboeuf 2018-11-26  15  {
c2406e1457f0ae Peter Zijlstra 2019-10-03  16  	int size = CALL_INSN_SIZE;
c2406e1457f0ae Peter Zijlstra 2019-10-03  17  	const void *code;
c2406e1457f0ae Peter Zijlstra 2019-10-03  18  
c2406e1457f0ae Peter Zijlstra 2019-10-03  19  	switch (type) {
c2406e1457f0ae Peter Zijlstra 2019-10-03  20  	case CALL:
c2406e1457f0ae Peter Zijlstra 2019-10-03  21  		code = text_gen_insn(CALL_INSN_OPCODE, insn, func);
c2406e1457f0ae Peter Zijlstra 2019-10-03  22  		break;
c2406e1457f0ae Peter Zijlstra 2019-10-03  23  
c2406e1457f0ae Peter Zijlstra 2019-10-03  24  	case NOP:
c2406e1457f0ae Peter Zijlstra 2019-10-03  25  		code = ideal_nops[NOP_ATOMIC5];
c2406e1457f0ae Peter Zijlstra 2019-10-03  26  		break;
c2406e1457f0ae Peter Zijlstra 2019-10-03  27  
c2406e1457f0ae Peter Zijlstra 2019-10-03  28  	case JMP:
c2406e1457f0ae Peter Zijlstra 2019-10-03  29  		code = text_gen_insn(JMP32_INSN_OPCODE, insn, func);
c2406e1457f0ae Peter Zijlstra 2019-10-03  30  		break;
c2406e1457f0ae Peter Zijlstra 2019-10-03  31  
c2406e1457f0ae Peter Zijlstra 2019-10-03  32  	case RET:
c2406e1457f0ae Peter Zijlstra 2019-10-03  33  		code = text_gen_insn(RET_INSN_OPCODE, insn, func);
c2406e1457f0ae Peter Zijlstra 2019-10-03  34  		size = RET_INSN_SIZE;
c2406e1457f0ae Peter Zijlstra 2019-10-03  35  		break;
c2406e1457f0ae Peter Zijlstra 2019-10-03  36  	}
e73ac4b6b2e16a Josh Poimboeuf 2018-11-26  37  
c2406e1457f0ae Peter Zijlstra 2019-10-03 @38  	if (memcmp(insn, code, size) == 0)
e73ac4b6b2e16a Josh Poimboeuf 2018-11-26  39  		return;
e73ac4b6b2e16a Josh Poimboeuf 2018-11-26  40  
c2406e1457f0ae Peter Zijlstra 2019-10-03  41  	text_poke_bp(insn, code, size, NULL);
e73ac4b6b2e16a Josh Poimboeuf 2018-11-26  42  }
e73ac4b6b2e16a Josh Poimboeuf 2018-11-26  43  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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