Re: [PATCH] x86/unwind/orc: Add 'unwind_debug' cmdline option
From: kernel test robot
Date: Mon Aug 15 2022 - 18:24:22 EST
Hi Chen,
I love your patch! Perhaps something to improve:
[auto build test WARNING on tip/x86/core]
[also build test WARNING on soc/for-next clk/clk-next linus/master v6.0-rc1 next-20220815]
[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/Chen-Zhongjin/x86-unwind-orc-Add-unwind_debug-cmdline-option/20220815-190328
base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git a1a5482a2c6e38a3ebed32e571625c56a8cc41a6
config: x86_64-randconfig-a003-20220815 (https://download.01.org/0day-ci/archive/20220816/202208160326.pFZMVgFP-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
# https://github.com/intel-lab-lkp/linux/commit/3295e738f5b51f1f1f223bf52a8ecee2ab93fbca
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Chen-Zhongjin/x86-unwind-orc-Add-unwind_debug-cmdline-option/20220815-190328
git checkout 3295e738f5b51f1f1f223bf52a8ecee2ab93fbca
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All warnings (new ones prefixed by >>):
arch/x86/kernel/unwind_orc.c:17:9: error: expected identifier or '(' before 'if'
17 | if (state->task == current && !state->error) \
| ^~
In file included from include/asm-generic/bug.h:7,
from arch/x86/include/asm/bug.h:87,
from include/linux/bug.h:5,
from include/linux/jump_label.h:257,
from include/linux/static_key.h:1,
from arch/x86/include/asm/nospec-branch.h:6,
from arch/x86/include/asm/paravirt_types.h:40,
from arch/x86/include/asm/ptrace.h:97,
from arch/x86/include/asm/math_emu.h:5,
from arch/x86/include/asm/processor.h:13,
from arch/x86/include/asm/timex.h:5,
from include/linux/timex.h:67,
from include/linux/time32.h:13,
from include/linux/time.h:60,
from include/linux/stat.h:19,
from include/linux/module.h:13,
from arch/x86/kernel/unwind_orc.c:3:
include/linux/once_lite.h:34:10: error: expected identifier or '(' before ')' token
34 | })
| ^
include/linux/once_lite.h:11:9: note: in expansion of macro 'DO_ONCE_LITE_IF'
11 | DO_ONCE_LITE_IF(true, func, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~
include/linux/printk.h:605:9: note: in expansion of macro 'DO_ONCE_LITE'
605 | DO_ONCE_LITE(printk_deferred, fmt, ##__VA_ARGS__)
| ^~~~~~~~~~~~
arch/x86/kernel/unwind_orc.c:12:9: note: in expansion of macro 'printk_deferred_once'
12 | printk_deferred_once(KERN_WARNING "WARNING: " fmt, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~~
arch/x86/kernel/unwind_orc.c:18:17: note: in expansion of macro 'orc_warn'
18 | orc_warn(args); \
| ^~~~~~~~
arch/x86/kernel/unwind_orc.c:19:17: error: expected identifier or '(' before 'if'
19 | if (unwind_debug && !dumped_before) \
| ^~
>> arch/x86/kernel/unwind_orc.c:21:17: warning: data definition has no type or storage class
21 | dumped_before = true; \
| ^~~~~~~~~~~~~
arch/x86/kernel/unwind_orc.c:21:17: error: type defaults to 'int' in declaration of 'dumped_before' [-Werror=implicit-int]
arch/x86/kernel/unwind_orc.c:22:9: error: expected identifier or '(' before '}' token
22 | } \
| ^
arch/x86/kernel/unwind_orc.c:23:1: error: expected identifier or '(' before '}' token
23 | })
| ^
arch/x86/kernel/unwind_orc.c:23:2: error: expected identifier or '(' before ')' token
23 | })
| ^
arch/x86/kernel/unwind_orc.c: In function 'orc_find':
arch/x86/kernel/unwind_orc.c:219:35: error: '__start_orc_unwind_ip' undeclared (first use in this function); did you mean '__start_orc_unwind'?
219 | return __orc_find(__start_orc_unwind_ip + start,
| ^~~~~~~~~~~~~~~~~~~~~
| __start_orc_unwind
arch/x86/kernel/unwind_orc.c:219:35: note: each undeclared identifier is reported only once for each function it appears in
arch/x86/kernel/unwind_orc.c: At top level:
arch/x86/kernel/unwind_orc.c:239:32: error: '__start_orc_unwind_ip' undeclared here (not in a function); did you mean '__start_orc_unwind'?
239 | static int *cur_orc_ip_table = __start_orc_unwind_ip;
| ^~~~~~~~~~~~~~~~~~~~~
| __start_orc_unwind
arch/x86/kernel/unwind_orc.c: In function 'unwind_next_frame':
arch/x86/kernel/unwind_orc.c:534:18: error: expected ')' before 'break'
534 | }
| ^
| )
535 | break;
| ~~~~~
>> arch/x86/kernel/unwind_orc.c:16:21: warning: unused variable 'dumped_before' [-Wunused-variable]
16 | static bool dumped_before;
| ^~~~~~~~~~~~~
arch/x86/kernel/unwind_orc.c:531:25: note: in expansion of macro 'orc_warn_current'
531 | orc_warn_current("missing R10 value at %pB\n",
| ^~~~~~~~~~~~~~~~
arch/x86/kernel/unwind_orc.c:767:1: error: expected declaration or statement at end of input
767 | EXPORT_SYMBOL_GPL(__unwind_start);
| ^~~~~~~~~~~~~~~~~
arch/x86/kernel/unwind_orc.c:767:1: error: expected declaration or statement at end of input
arch/x86/kernel/unwind_orc.c:767:1: error: expected declaration or statement at end of input
arch/x86/kernel/unwind_orc.c:533:25: error: label 'err' used but not defined
533 | goto err;
| ^~~~
arch/x86/kernel/unwind_orc.c:506:17: error: label 'the_end' used but not defined
506 | goto the_end;
| ^~~~
>> arch/x86/kernel/unwind_orc.c:468:14: warning: variable 'indirect' set but not used [-Wunused-but-set-variable]
468 | bool indirect = false;
| ^~~~~~~~
>> arch/x86/kernel/unwind_orc.c:466:25: warning: unused variable 'prev_type' [-Wunused-variable]
466 | enum stack_type prev_type = state->stack_info.type;
| ^~~~~~~~~
>> arch/x86/kernel/unwind_orc.c:465:59: warning: unused variable 'prev_sp' [-Wunused-variable]
465 | unsigned long ip_p, sp, tmp, orig_ip = state->ip, prev_sp = state->sp;
| ^~~~~~~
>> arch/x86/kernel/unwind_orc.c:465:38: warning: unused variable 'orig_ip' [-Wunused-variable]
465 | unsigned long ip_p, sp, tmp, orig_ip = state->ip, prev_sp = state->sp;
| ^~~~~~~
>> arch/x86/kernel/unwind_orc.c:465:33: warning: unused variable 'tmp' [-Wunused-variable]
465 | unsigned long ip_p, sp, tmp, orig_ip = state->ip, prev_sp = state->sp;
| ^~~
>> arch/x86/kernel/unwind_orc.c:465:23: warning: unused variable 'ip_p' [-Wunused-variable]
465 | unsigned long ip_p, sp, tmp, orig_ip = state->ip, prev_sp = state->sp;
| ^~~~
arch/x86/kernel/unwind_orc.c:768: error: control reaches end of non-void function [-Werror=return-type]
At top level:
>> arch/x86/kernel/unwind_orc.c:16:21: warning: 'dumped_before' defined but not used [-Wunused-variable]
16 | static bool dumped_before;
| ^~~~~~~~~~~~~
arch/x86/kernel/unwind_orc.c:531:25: note: in expansion of macro 'orc_warn_current'
531 | orc_warn_current("missing R10 value at %pB\n",
| ^~~~~~~~~~~~~~~~
arch/x86/kernel/unwind_orc.c:421:13: warning: 'deref_stack_iret_regs' defined but not used [-Wunused-function]
421 | static bool deref_stack_iret_regs(struct unwind_state *state, unsigned long addr,
| ^~~~~~~~~~~~~~~~~~~~~
arch/x86/kernel/unwind_orc.c:405:13: warning: 'deref_stack_regs' defined but not used [-Wunused-function]
405 | static bool deref_stack_regs(struct unwind_state *state, unsigned long addr,
| ^~~~~~~~~~~~~~~~
arch/x86/kernel/unwind_orc.c:395:13: warning: 'deref_stack_reg' defined but not used [-Wunused-function]
395 | static bool deref_stack_reg(struct unwind_state *state, unsigned long addr,
| ^~~~~~~~~~~~~~~
arch/x86/kernel/unwind_orc.c:42:13: warning: 'unwind_dump' defined but not used [-Wunused-function]
42 | static void unwind_dump(struct unwind_state *state)
| ^~~~~~~~~~~
cc1: some warnings being treated as errors
vim +21 arch/x86/kernel/unwind_orc.c
10
11 #define orc_warn(fmt, ...) \
12 printk_deferred_once(KERN_WARNING "WARNING: " fmt, ##__VA_ARGS__)
13
14 #define orc_warn_current(args...) \
15 ({ \
> 16 static bool dumped_before;
17 if (state->task == current && !state->error) \
18 orc_warn(args); \
19 if (unwind_debug && !dumped_before) \
20 unwind_dump(state); \
> 21 dumped_before = true; \
22 } \
23 })
24
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