Re: [PATCH v3 -next 2/5] spi: mockup: Add writeable tracepoint for spi transfer

From: kernel test robot
Date: Sat Nov 04 2023 - 06:04:15 EST

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In reply to: Zhang Xiaoxu: "[PATCH v3 -next 2/5] spi: mockup: Add writeable tracepoint for spi transfer"
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Hi Zhang,

kernel test robot noticed the following build warnings:

[auto build test WARNING on next-20231103]

url: https://github.com/intel-lab-lkp/linux/commits/Zhang-Xiaoxu/spi-mockup-Add-SPI-controller-testing-driver/20231104-144859
base: next-20231103
patch link: https://lore.kernel.org/r/20231104064650.972687-3-zhangxiaoxu%40huaweicloud.com
patch subject: [PATCH v3 -next 2/5] spi: mockup: Add writeable tracepoint for spi transfer
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20231104/202311041721.m13CvbG0-lkp@xxxxxxxxx/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231104/202311041721.m13CvbG0-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/202311041721.m13CvbG0-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

2221 | rcu_assign_pointer(event->tp_event->prog_array, new_array);
| ^~
include/asm-generic/rwonce.h:55:27: note: in definition of macro '__WRITE_ONCE'
55 | *(volatile typeof(x) *)&(x) = (val); \
| ^
include/asm-generic/barrier.h:198:9: note: in expansion of macro 'WRITE_ONCE'
198 | WRITE_ONCE(*p, v); \
| ^~~~~~~~~~
include/linux/rcupdate.h:500:17: note: in expansion of macro 'smp_store_release'
500 | smp_store_release(&p, RCU_INITIALIZER((typeof(p))_r_a_p__v)); \
| ^~~~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2221:17: note: in expansion of macro 'rcu_assign_pointer'
2221 | rcu_assign_pointer(event->tp_event->prog_array, new_array);
| ^~~~~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2221:41: error: 'struct perf_event' has no member named 'tp_event'
2221 | rcu_assign_pointer(event->tp_event->prog_array, new_array);
| ^~
include/asm-generic/rwonce.h:55:34: note: in definition of macro '__WRITE_ONCE'
55 | *(volatile typeof(x) *)&(x) = (val); \
| ^
include/asm-generic/barrier.h:198:9: note: in expansion of macro 'WRITE_ONCE'
198 | WRITE_ONCE(*p, v); \
| ^~~~~~~~~~
include/linux/rcupdate.h:500:17: note: in expansion of macro 'smp_store_release'
500 | smp_store_release(&p, RCU_INITIALIZER((typeof(p))_r_a_p__v)); \
| ^~~~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2221:17: note: in expansion of macro 'rcu_assign_pointer'
2221 | rcu_assign_pointer(event->tp_event->prog_array, new_array);
| ^~~~~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2221:41: error: 'struct perf_event' has no member named 'tp_event'
2221 | rcu_assign_pointer(event->tp_event->prog_array, new_array);
| ^~
include/asm-generic/rwonce.h:55:40: note: in definition of macro '__WRITE_ONCE'
55 | *(volatile typeof(x) *)&(x) = (val); \
| ^~~
include/asm-generic/barrier.h:198:9: note: in expansion of macro 'WRITE_ONCE'
198 | WRITE_ONCE(*p, v); \
| ^~~~~~~~~~
include/linux/rcupdate.h:500:17: note: in expansion of macro 'smp_store_release'
500 | smp_store_release(&p, RCU_INITIALIZER((typeof(p))_r_a_p__v)); \
| ^~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:500:39: note: in expansion of macro 'RCU_INITIALIZER'
500 | smp_store_release(&p, RCU_INITIALIZER((typeof(p))_r_a_p__v)); \
| ^~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2221:17: note: in expansion of macro 'rcu_assign_pointer'
2221 | rcu_assign_pointer(event->tp_event->prog_array, new_array);
| ^~~~~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2221:41: error: 'struct perf_event' has no member named 'tp_event'
2221 | rcu_assign_pointer(event->tp_event->prog_array, new_array);
| ^~
include/asm-generic/rwonce.h:55:40: note: in definition of macro '__WRITE_ONCE'
55 | *(volatile typeof(x) *)&(x) = (val); \
| ^~~
include/asm-generic/barrier.h:198:9: note: in expansion of macro 'WRITE_ONCE'
198 | WRITE_ONCE(*p, v); \
| ^~~~~~~~~~
include/linux/rcupdate.h:500:17: note: in expansion of macro 'smp_store_release'
500 | smp_store_release(&p, RCU_INITIALIZER((typeof(p))_r_a_p__v)); \
| ^~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:500:39: note: in expansion of macro 'RCU_INITIALIZER'
500 | smp_store_release(&p, RCU_INITIALIZER((typeof(p))_r_a_p__v)); \
| ^~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2221:17: note: in expansion of macro 'rcu_assign_pointer'
2221 | rcu_assign_pointer(event->tp_event->prog_array, new_array);
| ^~~~~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2225:27: error: 'struct perf_event' has no member named 'prog'
2225 | bpf_prog_put(event->prog);
| ^~
kernel/trace/bpf_trace.c:2226:14: error: 'struct perf_event' has no member named 'prog'
2226 | event->prog = NULL;
| ^~
kernel/trace/bpf_trace.c: In function 'perf_event_query_prog_array':
kernel/trace/bpf_trace.c:2242:18: error: 'struct perf_event' has no member named 'attr'
2242 | if (event->attr.type != PERF_TYPE_TRACEPOINT)
| ^~
kernel/trace/bpf_trace.c:2261:48: error: 'struct perf_event' has no member named 'tp_event'
2261 | progs = bpf_event_rcu_dereference(event->tp_event->prog_array);
| ^~
include/linux/rcupdate.h:445:19: note: in definition of macro '__rcu_dereference_protected'
445 | ((typeof(*p) __force __kernel *)(p)); \
| ^
kernel/trace/bpf_trace.c:42:9: note: in expansion of macro 'rcu_dereference_protected'
42 | rcu_dereference_protected(p, lockdep_is_held(&bpf_event_mutex))
| ^~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2261:17: note: in expansion of macro 'bpf_event_rcu_dereference'
2261 | progs = bpf_event_rcu_dereference(event->tp_event->prog_array);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2261:48: error: 'struct perf_event' has no member named 'tp_event'
2261 | progs = bpf_event_rcu_dereference(event->tp_event->prog_array);
| ^~
include/linux/rcupdate.h:445:42: note: in definition of macro '__rcu_dereference_protected'
445 | ((typeof(*p) __force __kernel *)(p)); \
| ^
kernel/trace/bpf_trace.c:42:9: note: in expansion of macro 'rcu_dereference_protected'
42 | rcu_dereference_protected(p, lockdep_is_held(&bpf_event_mutex))
| ^~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2261:17: note: in expansion of macro 'bpf_event_rcu_dereference'
2261 | progs = bpf_event_rcu_dereference(event->tp_event->prog_array);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c: At top level:
>> kernel/trace/bpf_trace.c:2337:14: warning: no previous prototype for 'bpf_trace_run1' [-Wmissing-prototypes]
2337 | void bpf_trace_run##x(struct bpf_prog *prog, \
| ^~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2345:1: note: in expansion of macro 'BPF_TRACE_DEFN_x'
2345 | BPF_TRACE_DEFN_x(1);
| ^~~~~~~~~~~~~~~~
>> kernel/trace/bpf_trace.c:2337:14: warning: no previous prototype for 'bpf_trace_run2' [-Wmissing-prototypes]
2337 | void bpf_trace_run##x(struct bpf_prog *prog, \
| ^~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2346:1: note: in expansion of macro 'BPF_TRACE_DEFN_x'
2346 | BPF_TRACE_DEFN_x(2);
| ^~~~~~~~~~~~~~~~
>> kernel/trace/bpf_trace.c:2337:14: warning: no previous prototype for 'bpf_trace_run3' [-Wmissing-prototypes]
2337 | void bpf_trace_run##x(struct bpf_prog *prog, \
| ^~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2347:1: note: in expansion of macro 'BPF_TRACE_DEFN_x'
2347 | BPF_TRACE_DEFN_x(3);
| ^~~~~~~~~~~~~~~~
>> kernel/trace/bpf_trace.c:2337:14: warning: no previous prototype for 'bpf_trace_run4' [-Wmissing-prototypes]
2337 | void bpf_trace_run##x(struct bpf_prog *prog, \
| ^~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2348:1: note: in expansion of macro 'BPF_TRACE_DEFN_x'
2348 | BPF_TRACE_DEFN_x(4);
| ^~~~~~~~~~~~~~~~
>> kernel/trace/bpf_trace.c:2337:14: warning: no previous prototype for 'bpf_trace_run5' [-Wmissing-prototypes]
2337 | void bpf_trace_run##x(struct bpf_prog *prog, \
| ^~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2349:1: note: in expansion of macro 'BPF_TRACE_DEFN_x'
2349 | BPF_TRACE_DEFN_x(5);
| ^~~~~~~~~~~~~~~~
>> kernel/trace/bpf_trace.c:2337:14: warning: no previous prototype for 'bpf_trace_run6' [-Wmissing-prototypes]
2337 | void bpf_trace_run##x(struct bpf_prog *prog, \
| ^~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2350:1: note: in expansion of macro 'BPF_TRACE_DEFN_x'
2350 | BPF_TRACE_DEFN_x(6);
| ^~~~~~~~~~~~~~~~
>> kernel/trace/bpf_trace.c:2337:14: warning: no previous prototype for 'bpf_trace_run7' [-Wmissing-prototypes]
2337 | void bpf_trace_run##x(struct bpf_prog *prog, \
| ^~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2351:1: note: in expansion of macro 'BPF_TRACE_DEFN_x'
2351 | BPF_TRACE_DEFN_x(7);
| ^~~~~~~~~~~~~~~~
>> kernel/trace/bpf_trace.c:2337:14: warning: no previous prototype for 'bpf_trace_run8' [-Wmissing-prototypes]
2337 | void bpf_trace_run##x(struct bpf_prog *prog, \
| ^~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2352:1: note: in expansion of macro 'BPF_TRACE_DEFN_x'
2352 | BPF_TRACE_DEFN_x(8);
| ^~~~~~~~~~~~~~~~
>> kernel/trace/bpf_trace.c:2337:14: warning: no previous prototype for 'bpf_trace_run9' [-Wmissing-prototypes]
2337 | void bpf_trace_run##x(struct bpf_prog *prog, \
| ^~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2353:1: note: in expansion of macro 'BPF_TRACE_DEFN_x'
2353 | BPF_TRACE_DEFN_x(9);
| ^~~~~~~~~~~~~~~~
>> kernel/trace/bpf_trace.c:2337:14: warning: no previous prototype for 'bpf_trace_run10' [-Wmissing-prototypes]
2337 | void bpf_trace_run##x(struct bpf_prog *prog, \
| ^~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2354:1: note: in expansion of macro 'BPF_TRACE_DEFN_x'
2354 | BPF_TRACE_DEFN_x(10);
| ^~~~~~~~~~~~~~~~
>> kernel/trace/bpf_trace.c:2337:14: warning: no previous prototype for 'bpf_trace_run11' [-Wmissing-prototypes]
2337 | void bpf_trace_run##x(struct bpf_prog *prog, \
| ^~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2355:1: note: in expansion of macro 'BPF_TRACE_DEFN_x'
2355 | BPF_TRACE_DEFN_x(11);
| ^~~~~~~~~~~~~~~~
>> kernel/trace/bpf_trace.c:2337:14: warning: no previous prototype for 'bpf_trace_run12' [-Wmissing-prototypes]
2337 | void bpf_trace_run##x(struct bpf_prog *prog, \
| ^~~~~~~~~~~~~
kernel/trace/bpf_trace.c:2356:1: note: in expansion of macro 'BPF_TRACE_DEFN_x'
2356 | BPF_TRACE_DEFN_x(12);
| ^~~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c: In function 'bpf_get_perf_event_info':
kernel/trace/bpf_trace.c:2395:21: error: 'const struct perf_event' has no member named 'prog'
2395 | prog = event->prog;
| ^~
kernel/trace/bpf_trace.c:2404:22: error: 'const struct perf_event' has no member named 'tp_event'
2404 | flags = event->tp_event->flags;
| ^~
kernel/trace/bpf_trace.c:2406:53: error: 'const struct perf_event' has no member named 'tp_event'
2406 | is_syscall_tp = is_syscall_trace_event(event->tp_event);
| ^~
kernel/trace/bpf_trace.c:2409:45: error: 'const struct perf_event' has no member named 'tp_event'
2409 | *buf = is_tracepoint ? event->tp_event->tp->name
| ^~
kernel/trace/bpf_trace.c:2410:45: error: 'const struct perf_event' has no member named 'tp_event'
2410 | : event->tp_event->name;
| ^~
kernel/trace/bpf_trace.c: In function '____bpf_get_attach_cookie_pe':
>> kernel/trace/bpf_trace.c:1155:1: warning: control reaches end of non-void function [-Wreturn-type]
1155 | }
| ^
cc1: some warnings being treated as errors

Kconfig warnings: (for reference only)
WARNING: unmet direct dependencies detected for BPF_EVENTS
Depends on [n]: FTRACE [=n] && BPF_SYSCALL [=y] && (KPROBE_EVENTS [=n] || UPROBE_EVENTS [=n]) && PERF_EVENTS [=n]
Selected by [y]:
- SPI_MOCKUP [=y] && SPI [=y] && SPI_MASTER [=y] && OF [=y]

vim +/bpf_trace_run1 +2337 kernel/trace/bpf_trace.c

c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2335
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2336 #define BPF_TRACE_DEFN_x(x) \
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 @2337 void bpf_trace_run##x(struct bpf_prog *prog, \
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2338 REPEAT(x, SARG, __DL_COM, __SEQ_0_11)) \
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2339 { \
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2340 u64 args[x]; \
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2341 REPEAT(x, COPY, __DL_SEM, __SEQ_0_11); \
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2342 __bpf_trace_run(prog, args); \
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2343 } \
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2344 EXPORT_SYMBOL_GPL(bpf_trace_run##x)
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2345 BPF_TRACE_DEFN_x(1);
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2346 BPF_TRACE_DEFN_x(2);
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2347 BPF_TRACE_DEFN_x(3);
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2348 BPF_TRACE_DEFN_x(4);
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2349 BPF_TRACE_DEFN_x(5);
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2350 BPF_TRACE_DEFN_x(6);
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2351 BPF_TRACE_DEFN_x(7);
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2352 BPF_TRACE_DEFN_x(8);
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2353 BPF_TRACE_DEFN_x(9);
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2354 BPF_TRACE_DEFN_x(10);
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2355 BPF_TRACE_DEFN_x(11);
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2356 BPF_TRACE_DEFN_x(12);
c4f6699dfcb855 Alexei Starovoitov 2018-03-28 2357

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