Re: [PATCH v3] tracing: Show last module text symbols in the stacktrace
From: kernel test robot
Date: Tue Mar 11 2025 - 11:26:12 EST
Hi Masami,
kernel test robot noticed the following build errors:
[auto build test ERROR on trace/for-next]
[cannot apply to linus/master v6.14-rc6 next-20250311]
[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/Masami-Hiramatsu-Google/tracing-Show-last-module-text-symbols-in-the-stacktrace/20250310-214849
base: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next
patch link: https://lore.kernel.org/r/174161444691.1063601.16690699136628689205.stgit%40devnote2
patch subject: [PATCH v3] tracing: Show last module text symbols in the stacktrace
config: i386-buildonly-randconfig-001-20250311 (https://download.01.org/0day-ci/archive/20250311/202503112303.D7g66VSd-lkp@xxxxxxxxx/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250311/202503112303.D7g66VSd-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202503112303.D7g66VSd-lkp@xxxxxxxxx/
All errors (new ones prefixed by >>):
kernel/trace/trace.c: In function 'save_mod':
kernel/trace/trace.c:6072:45: error: invalid use of undefined type 'struct module'
6072 | entry->mod_addr = (unsigned long)mod->mem[MOD_TEXT].base;
| ^~
kernel/trace/trace.c:6072:51: error: 'MOD_TEXT' undeclared (first use in this function)
6072 | entry->mod_addr = (unsigned long)mod->mem[MOD_TEXT].base;
| ^~~~~~~~
kernel/trace/trace.c:6072:51: note: each undeclared identifier is reported only once for each function it appears in
In file included from arch/x86/include/asm/page_32.h:18,
from arch/x86/include/asm/page.h:14,
from arch/x86/include/asm/thread_info.h:12,
from include/linux/thread_info.h:60,
from include/linux/spinlock.h:60,
from include/linux/mmzone.h:8,
from include/linux/gfp.h:7,
from include/linux/mm.h:7,
from include/linux/ring_buffer.h:5,
from kernel/trace/trace.c:15:
kernel/trace/trace.c:6073:37: error: invalid use of undefined type 'struct module'
6073 | strscpy(entry->mod_name, mod->name);
| ^~
include/linux/string.h:80:28: note: in definition of macro '__strscpy0'
80 | sized_strscpy(dst, src, sizeof(dst) + __must_be_array(dst) + \
| ^~~
kernel/trace/trace.c:6073:9: note: in expansion of macro 'strscpy'
6073 | strscpy(entry->mod_name, mod->name);
| ^~~~~~~
In file included from include/asm-generic/bug.h:5,
from arch/x86/include/asm/bug.h:99,
from include/linux/bug.h:5,
from include/linux/mmdebug.h:5,
from include/linux/mm.h:6:
kernel/trace/trace.c:6073:37: error: invalid use of undefined type 'struct module'
6073 | strscpy(entry->mod_name, mod->name);
| ^~
include/linux/compiler.h:197:79: note: in definition of macro '__BUILD_BUG_ON_ZERO_MSG'
197 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
include/linux/compiler.h:211:33: note: in expansion of macro '__annotated'
211 | __BUILD_BUG_ON_ZERO_MSG(__annotated(p, nonstring), "must be cstr (NUL-terminated)")
| ^~~~~~~~~~~
include/linux/string.h:81:55: note: in expansion of macro '__must_be_cstr'
81 | __must_be_cstr(dst) + __must_be_cstr(src))
| ^~~~~~~~~~~~~~
include/linux/args.h:25:24: note: in expansion of macro '__strscpy0'
25 | #define __CONCAT(a, b) a ## b
| ^
kernel/trace/trace.c:6073:9: note: in expansion of macro 'strscpy'
6073 | strscpy(entry->mod_name, mod->name);
| ^~~~~~~
kernel/trace/trace.c: In function 'make_mod_delta':
kernel/trace/trace.c:9411:32: error: invalid use of undefined type 'struct module'
9411 | if (!strcmp(mod->name, entry->mod_name)) {
| ^~
kernel/trace/trace.c:9412:32: error: invalid use of undefined type 'struct module'
9412 | if (mod->state == MODULE_STATE_GOING)
| ^~
>> kernel/trace/trace.c:9412:43: error: 'MODULE_STATE_GOING' undeclared (first use in this function)
9412 | if (mod->state == MODULE_STATE_GOING)
| ^~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:9415:69: error: invalid use of undefined type 'struct module'
9415 | module_delta[i] = (unsigned long)mod->mem[MOD_TEXT].base
| ^~
kernel/trace/trace.c:9415:75: error: 'MOD_TEXT' undeclared (first use in this function)
9415 | module_delta[i] = (unsigned long)mod->mem[MOD_TEXT].base
| ^~~~~~~~
vim +/MODULE_STATE_GOING +9412 kernel/trace/trace.c
9398
9399 static int make_mod_delta(struct module *mod, void *data)
9400 {
9401 struct trace_scratch *tscratch;
9402 struct trace_mod_entry *entry;
9403 struct trace_array *tr = data;
9404 long *module_delta;
9405 int i;
9406
9407 tscratch = tr->scratch;
9408 module_delta = READ_ONCE(tscratch->module_delta);
9409 for (i = 0; i < tscratch->nr_entries; i++) {
9410 entry = &tscratch->entries[i];
> 9411 if (!strcmp(mod->name, entry->mod_name)) {
> 9412 if (mod->state == MODULE_STATE_GOING)
9413 module_delta[i] = 0;
9414 else
9415 module_delta[i] = (unsigned long)mod->mem[MOD_TEXT].base
9416 - entry->mod_addr;
9417 break;
9418 }
9419 }
9420 return 0;
9421 }
9422
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki