[mark:arm64/ftrace/minimal-regs 5/6] arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration

From: kernel test robot
Date: Wed Jun 01 2022 - 12:11:21 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/ftrace/minimal-regs
head: b0741d059a9f19a1aa1191833140f53e41f1775a
commit: c694698df7f633bcbdf8bc0edb94f4a70ed0d092 [5/6] ftrace: pass fregs to arch_ftrace_set_direct_caller()
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20220602/202206020054.xO14dbgM-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-1) 11.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/commit/?id=c694698df7f633bcbdf8bc0edb94f4a70ed0d092
git remote add mark https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git
git fetch --no-tags mark arm64/ftrace/minimal-regs
git checkout c694698df7f633bcbdf8bc0edb94f4a70ed0d092
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/hwmon/ kernel/trace/

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

All warnings (new ones prefixed by >>):

In file included from include/linux/ftrace.h:23,
from kernel/trace/ftrace.c:29:
>> arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
>> arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
In file included from kernel/trace/ftrace.c:29:
include/linux/ftrace.h: At top level:
include/linux/ftrace.h:121:40: error: conflicting types for 'ftrace_get_regs'; have 'struct pt_regs *(struct ftrace_regs *)'
121 | static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)
| ^~~~~~~~~~~~~~~
In file included from include/linux/ftrace.h:23,
from kernel/trace/ftrace.c:29:
arch/x86/include/asm/ftrace.h:47:32: note: previous implicit declaration of 'ftrace_get_regs' with type 'int()'
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
kernel/trace/ftrace.c:299:5: warning: no previous prototype for '__register_ftrace_function' [-Wmissing-prototypes]
299 | int __register_ftrace_function(struct ftrace_ops *ops)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/ftrace.c:342:5: warning: no previous prototype for '__unregister_ftrace_function' [-Wmissing-prototypes]
342 | int __unregister_ftrace_function(struct ftrace_ops *ops)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/ftrace.c: In function 'call_direct_funcs':
kernel/trace/ftrace.c:2451:39: error: passing argument 1 of 'arch_ftrace_set_direct_caller' from incompatible pointer type [-Werror=incompatible-pointer-types]
2451 | arch_ftrace_set_direct_caller(fregs, addr);
| ^~~~~
| |
| struct ftrace_regs *
In file included from include/linux/ftrace.h:23,
from kernel/trace/ftrace.c:29:
arch/x86/include/asm/ftrace.h:45:70: note: expected 'struct ftrace_regs *' but argument is of type 'struct ftrace_regs *'
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ~~~~~~~~~~~~~~~~~~~~^~~~~
kernel/trace/ftrace.c: At top level:
kernel/trace/ftrace.c:3983:15: warning: no previous prototype for 'arch_ftrace_match_adjust' [-Wmissing-prototypes]
3983 | char * __weak arch_ftrace_match_adjust(char *str, const char *search)
| ^~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
--
In file included from include/linux/ftrace.h:23,
from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from kernel/trace/ring_buffer.c:8:
>> arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
>> arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
In file included from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from kernel/trace/ring_buffer.c:8:
include/linux/ftrace.h: At top level:
include/linux/ftrace.h:121:40: error: conflicting types for 'ftrace_get_regs'; have 'struct pt_regs *(struct ftrace_regs *)'
121 | static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)
| ^~~~~~~~~~~~~~~
In file included from include/linux/ftrace.h:23,
from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from kernel/trace/ring_buffer.c:8:
arch/x86/include/asm/ftrace.h:47:32: note: previous implicit declaration of 'ftrace_get_regs' with type 'int()'
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
--
In file included from include/linux/ftrace.h:23,
from kernel/trace/trace.c:31:
>> arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
>> arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
In file included from kernel/trace/trace.c:31:
include/linux/ftrace.h: At top level:
include/linux/ftrace.h:121:40: error: conflicting types for 'ftrace_get_regs'; have 'struct pt_regs *(struct ftrace_regs *)'
121 | static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)
| ^~~~~~~~~~~~~~~
In file included from include/linux/ftrace.h:23,
from kernel/trace/trace.c:31:
arch/x86/include/asm/ftrace.h:47:32: note: previous implicit declaration of 'ftrace_get_regs' with type 'int()'
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
kernel/trace/trace.c: In function 'trace_check_vprintf':
kernel/trace/trace.c:3846:17: warning: function 'trace_check_vprintf' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
3846 | trace_seq_vprintf(&iter->seq, iter->fmt, ap);
| ^~~~~~~~~~~~~~~~~
kernel/trace/trace.c:3913:17: warning: function 'trace_check_vprintf' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
3913 | trace_seq_vprintf(&iter->seq, p, ap);
| ^~~~~~~~~~~~~~~~~
At top level:
kernel/trace/trace.c:1689:37: warning: 'tracing_max_lat_fops' defined but not used [-Wunused-const-variable=]
1689 | static const struct file_operations tracing_max_lat_fops;
| ^~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
--
In file included from include/linux/ftrace.h:23,
from kernel/trace/trace_output.c:10:
>> arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
>> arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
In file included from kernel/trace/trace_output.c:10:
include/linux/ftrace.h: At top level:
include/linux/ftrace.h:121:40: error: conflicting types for 'ftrace_get_regs'; have 'struct pt_regs *(struct ftrace_regs *)'
121 | static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)
| ^~~~~~~~~~~~~~~
In file included from include/linux/ftrace.h:23,
from kernel/trace/trace_output.c:10:
arch/x86/include/asm/ftrace.h:47:32: note: previous implicit declaration of 'ftrace_get_regs' with type 'int()'
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
kernel/trace/trace_output.c: In function 'trace_output_raw':
kernel/trace/trace_output.c:332:9: warning: function 'trace_output_raw' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
332 | trace_seq_vprintf(s, trace_event_format(iter, fmt), ap);
| ^~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
--
In file included from include/linux/ftrace.h:23,
from kernel/trace/fgraph.c:12:
>> arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
>> arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
In file included from kernel/trace/fgraph.c:12:
include/linux/ftrace.h: At top level:
include/linux/ftrace.h:121:40: error: conflicting types for 'ftrace_get_regs'; have 'struct pt_regs *(struct ftrace_regs *)'
121 | static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)
| ^~~~~~~~~~~~~~~
In file included from include/linux/ftrace.h:23,
from kernel/trace/fgraph.c:12:
arch/x86/include/asm/ftrace.h:47:32: note: previous implicit declaration of 'ftrace_get_regs' with type 'int()'
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
kernel/trace/fgraph.c:241:15: warning: no previous prototype for 'ftrace_return_to_handler' [-Wmissing-prototypes]
241 | unsigned long ftrace_return_to_handler(unsigned long frame_pointer)
| ^~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/fgraph.c:356:6: warning: no previous prototype for 'ftrace_graph_sleep_time_control' [-Wmissing-prototypes]
356 | void ftrace_graph_sleep_time_control(bool enable)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

vim +45 arch/x86/include/asm/ftrace.h

37
38 /*
39 * When a ftrace registered caller is tracing a function that is
40 * also set by a register_ftrace_direct() call, it needs to be
41 * differentiated in the ftrace_caller trampoline. To do this, we
42 * place the direct caller in the ORIG_AX part of pt_regs. This
43 * tells the ftrace_caller that there's a direct caller.
44 */
> 45 static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
46 {
> 47 struct pt_regs *regs = ftrace_get_regs(fregs);
48
49 /* Emulate a call */
50 regs->orig_ax = addr;
51 }
52

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

Next message: Catalin Marinas: "Re: [PATCH] mm: kmemleak: check boundary of objects allocated with physical address when scan"
Previous message: kernel test robot: "[mark:arm64/ftrace/minimal-regs 5/6] arch/x86/include/asm/ftrace.h:47:32: error: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]