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Date: Wed, 30 Nov 2022 19:22:31 +0800
From: kernel test robot <lkp@...el.com>
To: Song Chen <chensong_2000@....cn>, rostedt@...dmis.org,
mhiramat@...nel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
Song Chen <chensong_2000@....cn>
Subject: Re: [PATCH v2 2/2] kernel/trace: Provide default impelentations
defined in trace_probe_tmpl.h
Hi Song,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on linus/master]
[also build test ERROR on v6.1-rc7 next-20221130]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Song-Chen/reorganize-trace_peobe_tmpl-h/20221124-144203
patch link: https://lore.kernel.org/r/1669190524-2894-1-git-send-email-chensong_2000%40189.cn
patch subject: [PATCH v2 2/2] kernel/trace: Provide default impelentations defined in trace_probe_tmpl.h
config: hexagon-randconfig-r011-20221128
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 6e4cea55f0d1104408b26ac574566a0e4de48036)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/596b7db0e6685dbed21d4ae5c27492c1d12ab090
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Song-Chen/reorganize-trace_peobe_tmpl-h/20221124-144203
git checkout 596b7db0e6685dbed21d4ae5c27492c1d12ab090
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash kernel/trace/ net/smc/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
In file included from kernel/trace/trace_events_synth.c:18:
In file included from include/linux/trace_events.h:9:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
^
In file included from kernel/trace/trace_events_synth.c:18:
In file included from include/linux/trace_events.h:9:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
^
In file included from kernel/trace/trace_events_synth.c:18:
In file included from include/linux/trace_events.h:9:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
In file included from kernel/trace/trace_events_synth.c:22:
>> kernel/trace/trace_probe_kernel.h:203:9: error: call to undeclared function 'regs_get_register'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
val = regs_get_register(regs, code->param);
^
kernel/trace/trace_probe_kernel.h:203:9: note: did you mean 'kset_register'?
include/linux/kobject.h:180:25: note: 'kset_register' declared here
extern int __must_check kset_register(struct kset *kset);
^
In file included from kernel/trace/trace_events_synth.c:22:
>> kernel/trace/trace_probe_kernel.h:206:9: error: call to undeclared function 'regs_get_kernel_stack_nth'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
val = regs_get_kernel_stack_nth(regs, code->param);
^
>> kernel/trace/trace_probe_kernel.h:209:9: error: call to undeclared function 'kernel_stack_pointer'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
val = kernel_stack_pointer(regs);
^
>> kernel/trace/trace_probe_kernel.h:212:9: error: call to undeclared function 'regs_return_value'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
val = regs_return_value(regs);
^
6 warnings and 4 errors generated.
vim +/regs_get_register +203 kernel/trace/trace_probe_kernel.h
190
191 /* Note that we don't verify it, since the code does not come from user space */
192 static int
193 process_fetch_insn(struct fetch_insn *code, void *rec, void *dest,
194 void *base)
195 {
196 struct pt_regs *regs = rec;
197 unsigned long val;
198
199 retry:
200 /* 1st stage: get value from context */
201 switch (code->op) {
202 case FETCH_OP_REG:
> 203 val = regs_get_register(regs, code->param);
204 break;
205 case FETCH_OP_STACK:
> 206 val = regs_get_kernel_stack_nth(regs, code->param);
207 break;
208 case FETCH_OP_STACKP:
> 209 val = kernel_stack_pointer(regs);
210 break;
211 case FETCH_OP_RETVAL:
> 212 val = regs_return_value(regs);
213 break;
214 case FETCH_OP_IMM:
215 val = code->immediate;
216 break;
217 case FETCH_OP_COMM:
218 val = (unsigned long)current->comm;
219 break;
220 case FETCH_OP_DATA:
221 val = (unsigned long)code->data;
222 break;
223 #ifdef CONFIG_HAVE_FUNCTION_ARG_ACCESS_API
224 case FETCH_OP_ARG:
225 val = regs_get_kernel_argument(regs, code->param);
226 break;
227 #endif
228 case FETCH_NOP_SYMBOL: /* Ignore a place holder */
229 code++;
230 goto retry;
231 case FETCH_OP_TP_ARG:
232 val = get_event_field(code, rec);
233 break;
234 default:
235 return -EILSEQ;
236 }
237 code++;
238
239 return process_fetch_insn_bottom(code, val, dest, base);
240 }
241 NOKPROBE_SYMBOL(process_fetch_insn)
242
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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