Re: [PATCH v2 13/21] MIPS: traps: Give more explanations if ebase doesn't belong to KSEG0

kernel test robot
2023-11-26T11:31:46Z

Hi Gregory,

kernel test robot noticed the following build warnings:

[auto build test WARNING on robh/for-next]
[also build test WARNING on lee-mfd/for-mfd-next linus/master v6.7-rc2 next-20231124]
[cannot apply to lee-mfd/for-mfd-fixes]
[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/Gregory-CLEMENT/MIPS-Export-higher-highest-relocation-functions-in-uasm/20231124-002644
base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link: https://lore.kernel.org/r/20231123152639.561231-14-gregory.clement%40bootlin.com
patch subject: [PATCH v2 13/21] MIPS: traps: Give more explanations if ebase doesn't belong to KSEG0
config: mips-allyesconfig (https://download.01.org/0day-ci/archive/20231126/202311261838.wgZG2yvS-lkp@intel.com/config)
compiler: mips-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231126/202311261838.wgZG2yvS-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311261838.wgZG2yvS-lkp@intel.com/

All warnings (new ones prefixed by >>):

arch/mips/kernel/traps.c:371:6: warning: no previous prototype for 'show_registers' [-Wmissing-prototypes]
371 | void show_registers(struct pt_regs *regs)
| ^~~~~~~~~~~~~~
arch/mips/kernel/traps.c:448:17: warning: no previous prototype for 'do_be' [-Wmissing-prototypes]
448 | asmlinkage void do_be(struct pt_regs *regs)
| ^~~~~
arch/mips/kernel/traps.c:753:17: warning: no previous prototype for 'do_ov' [-Wmissing-prototypes]
753 | asmlinkage void do_ov(struct pt_regs *regs)
| ^~~~~
arch/mips/kernel/traps.c:875:17: warning: no previous prototype for 'do_fpe' [-Wmissing-prototypes]
875 | asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31)
| ^~~~~~
arch/mips/kernel/traps.c:1028:17: warning: no previous prototype for 'do_bp' [-Wmissing-prototypes]
1028 | asmlinkage void do_bp(struct pt_regs *regs)
| ^~~~~
arch/mips/kernel/traps.c:1115:17: warning: no previous prototype for 'do_tr' [-Wmissing-prototypes]
1115 | asmlinkage void do_tr(struct pt_regs *regs)
| ^~~~~
arch/mips/kernel/traps.c:1152:17: warning: no previous prototype for 'do_ri' [-Wmissing-prototypes]
1152 | asmlinkage void do_ri(struct pt_regs *regs)
| ^~~~~
arch/mips/kernel/traps.c:1403:17: warning: no previous prototype for 'do_cpu' [-Wmissing-prototypes]
1403 | asmlinkage void do_cpu(struct pt_regs *regs)
| ^~~~~~
arch/mips/kernel/traps.c:1508:17: warning: no previous prototype for 'do_msa_fpe' [-Wmissing-prototypes]
1508 | asmlinkage void do_msa_fpe(struct pt_regs *regs, unsigned int msacsr)
| ^~~~~~~~~~
arch/mips/kernel/traps.c:1528:17: warning: no previous prototype for 'do_msa' [-Wmissing-prototypes]
1528 | asmlinkage void do_msa(struct pt_regs *regs)
| ^~~~~~
arch/mips/kernel/traps.c:1549:17: warning: no previous prototype for 'do_mdmx' [-Wmissing-prototypes]
1549 | asmlinkage void do_mdmx(struct pt_regs *regs)
| ^~~~~~~
arch/mips/kernel/traps.c:1561:17: warning: no previous prototype for 'do_watch' [-Wmissing-prototypes]
1561 | asmlinkage void do_watch(struct pt_regs *regs)
| ^~~~~~~~
arch/mips/kernel/traps.c:1588:17: warning: no previous prototype for 'do_mcheck' [-Wmissing-prototypes]
1588 | asmlinkage void do_mcheck(struct pt_regs *regs)
| ^~~~~~~~~
arch/mips/kernel/traps.c: In function 'do_mcheck':
arch/mips/kernel/traps.c:1591:24: warning: variable 'prev_state' set but not used [-Wunused-but-set-variable]
1591 | enum ctx_state prev_state;
| ^~~~~~~~~~
arch/mips/kernel/traps.c: At top level:
arch/mips/kernel/traps.c:1613:17: warning: no previous prototype for 'do_mt' [-Wmissing-prototypes]
1613 | asmlinkage void do_mt(struct pt_regs *regs)
| ^~~~~
arch/mips/kernel/traps.c:1649:17: warning: no previous prototype for 'do_dsp' [-Wmissing-prototypes]
1649 | asmlinkage void do_dsp(struct pt_regs *regs)
| ^~~~~~
arch/mips/kernel/traps.c:1657:17: warning: no previous prototype for 'do_reserved' [-Wmissing-prototypes]
1657 | asmlinkage void do_reserved(struct pt_regs *regs)
| ^~~~~~~~~~~
arch/mips/kernel/traps.c:1833:17: warning: no previous prototype for 'cache_parity_error' [-Wmissing-prototypes]
1833 | asmlinkage void cache_parity_error(void)
| ^~~~~~~~~~~~~~~~~~
arch/mips/kernel/traps.c:1881:17: warning: no previous prototype for 'do_ftlb' [-Wmissing-prototypes]
1881 | asmlinkage void do_ftlb(void)
| ^~~~~~~
arch/mips/kernel/traps.c:1910:17: warning: no previous prototype for 'do_gsexc' [-Wmissing-prototypes]
1910 | asmlinkage void do_gsexc(struct pt_regs *regs, u32 diag1)
| ^~~~~~~~
arch/mips/kernel/traps.c:1945:6: warning: no previous prototype for 'ejtag_exception_handler' [-Wmissing-prototypes]
1945 | void ejtag_exception_handler(struct pt_regs *regs)
| ^~~~~~~~~~~~~~~~~~~~~~~
arch/mips/kernel/traps.c:1990:17: warning: no previous prototype for 'nmi_exception_handler' [-Wmissing-prototypes]
1990 | void __noreturn nmi_exception_handler(struct pt_regs *regs)
| ^~~~~~~~~~~~~~~~~~~~~
In file included from include/asm-generic/bug.h:22,
from arch/mips/include/asm/bug.h:42,
from include/linux/bug.h:5,
from arch/mips/kernel/traps.c:16:
arch/mips/kernel/traps.c: In function 'trap_init':
>> include/linux/kern_levels.h:5:25: warning: format '%llX' expects argument of type 'long long unsigned int', but argument 2 has type 'phys_addr_t' {aka 'unsigned int'} [-Wformat=]
5 | #define KERN_SOH "\001" /* ASCII Start Of Header */
| ^~~~~~
include/linux/printk.h:427:25: note: in definition of macro 'printk_index_wrap'
427 | _p_func(_fmt, ##__VA_ARGS__); \
| ^~~~
include/linux/printk.h:508:9: note: in expansion of macro 'printk'
508 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~
include/linux/kern_levels.h:12:25: note: in expansion of macro 'KERN_SOH'
12 | #define KERN_WARNING KERN_SOH "4" /* warning conditions */
| ^~~~~~~~
include/linux/printk.h:508:16: note: in expansion of macro 'KERN_WARNING'
508 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~~~~~~~
arch/mips/kernel/traps.c:2428:25: note: in expansion of macro 'pr_warn'
2428 | pr_warn("ebase(0x%llX) should better be in KSeg0",
| ^~~~~~~

vim +5 include/linux/kern_levels.h

314ba3520e513a Joe Perches 2012-07-30 4
04d2c8c83d0e3a Joe Perches 2012-07-30 @5 #define KERN_SOH "\001" /* ASCII Start Of Header */
04d2c8c83d0e3a Joe Perches 2012-07-30 6 #define KERN_SOH_ASCII '\001'
04d2c8c83d0e3a Joe Perches 2012-07-30 7

--
0-DAY CI Kernel Test Service