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Subject[jsarha:topic/cros-sof-v4.14 8447/9354] kernel/panic.c:591:6: warning: no previous declaration for '__warn_printk'
tree:   https://github.com/jsarha/linux topic/cros-sof-v4.14
head: 6f750b16c322c9191168a3a97c427c90581d9144
commit: c4256ec7a28ebcf4371230422dceae6befc40836 [8447/9354] UPSTREAM: bug: fix "cut here" location for __WARN_TAINT architectures
config: i386-tinyconfig (https://download.01.org/0day-ci/archive/20220617/202206172352.f6AzDAj9-lkp@intel.com/config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce (this is a W=1 build):
# https://github.com/jsarha/linux/commit/c4256ec7a28ebcf4371230422dceae6befc40836
git remote add jsarha https://github.com/jsarha/linux
git fetch --no-tags jsarha topic/cros-sof-v4.14
git checkout c4256ec7a28ebcf4371230422dceae6befc40836
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

kernel/panic.c:61:13: warning: no previous declaration for 'panic_smp_self_stop' [-Wmissing-declarations]
void __weak panic_smp_self_stop(void)
^~~~~~~~~~~~~~~~~~~
kernel/panic.c:71:13: warning: no previous declaration for 'nmi_panic_self_stop' [-Wmissing-declarations]
void __weak nmi_panic_self_stop(struct pt_regs *regs)
^~~~~~~~~~~~~~~~~~~
kernel/panic.c:82:13: warning: no previous declaration for 'crash_smp_send_stop' [-Wmissing-declarations]
void __weak crash_smp_send_stop(void)
^~~~~~~~~~~~~~~~~~~
kernel/panic.c:516:6: warning: no previous declaration for '__warn' [-Wmissing-declarations]
void __warn(const char *file, int line, void *caller, unsigned taint,
^~~~~~
kernel/panic.c: In function '__warn':
kernel/panic.c:533:3: warning: function '__warn' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
vprintk(args->fmt, args->args);
^~~~~~~
kernel/panic.c: At top level:
>> kernel/panic.c:591:6: warning: no previous declaration for '__warn_printk' [-Wmissing-declarations]
void __warn_printk(const char *fmt, ...)
^~~~~~~~~~~~~
kernel/panic.c: In function '__warn_printk':
kernel/panic.c:598:2: warning: function '__warn_printk' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
vprintk(fmt, args);
^~~~~~~


vim +/__warn_printk +591 kernel/panic.c

583
584 void warn_slowpath_null(const char *file, int line)
585 {
586 pr_warn(CUT_HERE);
587 __warn(file, line, __builtin_return_address(0), TAINT_WARN, NULL, NULL);
588 }
589 EXPORT_SYMBOL(warn_slowpath_null);
590 #else
> 591 void __warn_printk(const char *fmt, ...)
592 {
593 va_list args;
594
595 pr_warn(CUT_HERE);
596
597 va_start(args, fmt);
598 vprintk(fmt, args);
599 va_end(args);
600 }
601 EXPORT_SYMBOL(__warn_printk);
602 #endif
603

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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