[jolsa-perf:bpf/tramp_27 25/33] kernel/bpf/syscall.c:3145:9: error: implicit declaration of function 'bpf_tramp_id_put'; did you mean 'bpf_trampoline_put'?

From: kernel test robot
Date: Sun Jul 10 2022 - 15:41:30 EST


tree: https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git bpf/tramp_27
head: 08201713df8992b94d140b43fd4f20f1ad4aedb3
commit: 09c2a865c50223e0a31377f51bd567e5d5943e73 [25/33] bpf: Add support for tracing multi link
config: x86_64-randconfig-a013 (https://download.01.org/0day-ci/archive/20220711/202207110306.PVeAPeww-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git/commit/?id=09c2a865c50223e0a31377f51bd567e5d5943e73
git remote add jolsa-perf https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
git fetch --no-tags jolsa-perf bpf/tramp_27
git checkout 09c2a865c50223e0a31377f51bd567e5d5943e73
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

kernel/bpf/syscall.c: In function 'bpf_prog_load':
kernel/bpf/syscall.c:2503:22: error: implicit declaration of function 'is_tracing_multi' [-Werror=implicit-function-declaration]
2503 | multi_func = is_tracing_multi(attr->expected_attach_type);
| ^~~~~~~~~~~~~~~~
In file included from arch/x86/include/asm/bug.h:87,
from include/linux/bug.h:5,
from include/linux/cpumask.h:14,
from arch/x86/include/asm/cpumask.h:5,
from arch/x86/include/asm/msr.h:11,
from arch/x86/include/asm/processor.h:22,
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/ktime.h:24,
from include/linux/timer.h:6,
from include/linux/workqueue.h:9,
from include/linux/bpf.h:10,
from kernel/bpf/syscall.c:4:
kernel/bpf/syscall.c: In function 'bpf_tracing_multi_link_release':
kernel/bpf/syscall.c:3137:22: error: implicit declaration of function 'bpf_trampoline_multi_detach' [-Werror=implicit-function-declaration]
3137 | WARN_ON_ONCE(bpf_trampoline_multi_detach(&tr_link->tp, tr_link->id));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bug.h:110:32: note: in definition of macro 'WARN_ON_ONCE'
110 | int __ret_warn_on = !!(condition); \
| ^~~~~~~~~
kernel/bpf/syscall.c: In function 'bpf_tracing_multi_link_dealloc':
>> kernel/bpf/syscall.c:3145:9: error: implicit declaration of function 'bpf_tramp_id_put'; did you mean 'bpf_trampoline_put'? [-Werror=implicit-function-declaration]
3145 | bpf_tramp_id_put(tr_link->id);
| ^~~~~~~~~~~~~~~~
| bpf_trampoline_put
kernel/bpf/syscall.c: In function 'bpf_tracing_multi_attach':
kernel/bpf/syscall.c:3308:14: error: implicit declaration of function 'bpf_tramp_id_alloc'; did you mean 'bpf_tramp_id_resolve'? [-Werror=implicit-function-declaration]
3308 | id = bpf_tramp_id_alloc(cnt);
| ^~~~~~~~~~~~~~~~~~
| bpf_tramp_id_resolve
kernel/bpf/syscall.c:3308:12: warning: assignment to 'struct bpf_tramp_id *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
3308 | id = bpf_tramp_id_alloc(cnt);
| ^
kernel/bpf/syscall.c:3349:15: error: implicit declaration of function 'bpf_trampoline_multi_attach'; did you mean 'bpf_tracing_multi_attach'? [-Werror=implicit-function-declaration]
3349 | err = bpf_trampoline_multi_attach(&link->tp, id);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
| bpf_tracing_multi_attach
cc1: some warnings being treated as errors


vim +3145 kernel/bpf/syscall.c

3139
3140 static void bpf_tracing_multi_link_dealloc(struct bpf_link *link)
3141 {
3142 struct bpf_tracing_multi_link *tr_link =
3143 container_of(link, struct bpf_tracing_multi_link, link);
3144
> 3145 bpf_tramp_id_put(tr_link->id);
3146 kfree(tr_link);
3147 }
3148

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