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Bug #1426
openlttng-modules 2.13.18 fails to compile for arm64
Start date:
04/24/2025
Due date:
% Done:
0%
Estimated time:
Description
Hi,
Yocto Project updates lttng-modules from 2.13.17 to 2.13.18 but on genericarm64 configuration there is a compile failure
when cross compiling for arm64 with kernel 6.12.23:
NOTE: make -j 64 KERNEL_SRC=/home/mcfrisk/src/base/repo/poky/build_test/tmp/work-shared/genericarm64/kernel-source KERNELDIR=/home/mcfrisk/src/base/repo/poky/build_test/tmp/work-shared/genericarm64/kernel-source KERNEL_PATH=/home/mcfrisk/src/base/repo/poky/build_test/tmp/work-shared/genericarm64/kernel-source KERNEL_VERSION=6.12.23-yocto-standard CC=aarch64-poky-linux-gcc -fuse-ld=bfd -ffile-prefix-map=/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18=/usr/src/debug/lttng-modules/2.13.18 -ffile-prefix-map=/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18=/usr/src/debug/lttng-modules/2.13.18 -ffile-prefix-map=/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/recipe-sysroot= -ffile-prefix-map=/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/recipe-sysroot-native= -ffile-prefix-map=/home/mcfrisk/src/base/repo/poky/build_test/tmp/work-shared/genericarm64/kernel-source=/usr/src/kernel -ffile-prefix-map=/home/mcfrisk/src/base/repo/poky/build_test/tmp/work-shared/genericarm64/kernel-build-artifacts=/usr/src/kernel LD=aarch64-poky-linux-ld.bfd AR=aarch64-poky-linux-ar OBJCOPY=aarch64-poky-linux-objcopy STRIP=aarch64-poky-linux-strip O=/home/mcfrisk/src/base/repo/poky/build_test/tmp/work-shared/genericarm64/kernel-build-artifacts KBUILD_EXTRA_SYMBOLS=
make -C /home/mcfrisk/src/base/repo/poky/build_test/tmp/work-shared/genericarm64/kernel-source M=/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src \
CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m \
KCPPFLAGS='' \
modules
make[1]: Entering directory '/home/mcfrisk/src/base/repo/poky/build_test/tmp/work-shared/genericarm64/kernel-source'
make[2]: Entering directory '/home/mcfrisk/src/base/repo/poky/build_test/tmp/work-shared/genericarm64/kernel-build-artifacts'
CC [M] /home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/lttng-ring-buffer-client-discard.o
CC [M] /home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/lttng-ring-buffer-client-overwrite.o
CC [M] /home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/lttng-ring-buffer-metadata-client.o
CC [M] /home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/lttng-ring-buffer-client-mmap-discard.o
CC [M] /home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/lttng-ring-buffer-client-mmap-overwrite.o
CC [M] /home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/lttng-ring-buffer-metadata-mmap-client.o
...
/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/lttng-syscalls-exit-compat-table.c:94:31: error: '__event_probe__compat_syscall_exit_sigaction' undeclared here (not in a function); did you mean '__event_probe__compat_syscall_exit_rt_sigaction'?
94 | .event_func = __event_probe__compat_syscall_exit_##_template, \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/../include/instrumentation/syscalls/headers/arm-32-syscalls_pointers.h:1894:1: note: in expansion of macro 'TRACE_SYSCALL_TABLE'
1894 | TRACE_SYSCALL_TABLE(sigaction, sigaction, 67, 3)
| ^~~~~~~~~~~~~~~~~~~
/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/lttng-syscalls-exit-compat-table.c:96:27: error: '__event_fields___compat_syscall_exit_sigaction' undeclared here (not in a function); did you mean '__event_fields___compat_syscall_exit_rt_sigaction'?
96 | .fields = __event_fields___compat_syscall_exit_##_template, \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/../include/instrumentation/syscalls/headers/arm-32-syscalls_pointers.h:1894:1: note: in expansion of macro 'TRACE_SYSCALL_TABLE'
1894 | TRACE_SYSCALL_TABLE(sigaction, sigaction, 67, 3)
| ^~~~~~~~~~~~~~~~~~~
/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/lttng-syscalls-exit-compat-table.c:97:26: error: '__event_desc___compat_syscall_exit_sigaction' undeclared here (not in a function); did you mean '__event_desc___compat_syscall_exit_rt_sigaction'?
97 | .desc = &__event_desc___compat_syscall_exit_##_name, \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/../include/instrumentation/syscalls/headers/arm-32-syscalls_pointers.h:1894:1: note: in expansion of macro 'TRACE_SYSCALL_TABLE'
1894 | TRACE_SYSCALL_TABLE(sigaction, sigaction, 67, 3)
| ^~~~~~~~~~~~~~~~~~~
make[4]: *** [/home/mcfrisk/src/base/repo/poky/build_test/tmp/work-shared/genericarm64/kernel-source/scripts/Makefile.build:229: /home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/lttng-syscalls-exit-compat-table.o] Error 1
make[4]: *** Waiting for unfinished jobs....
/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/lttng-syscalls-entry-compat-table.c:95:31: error: '__event_probe__compat_syscall_entry_sigaction' undeclared here (not in a function); did you mean '__event_probe__compat_syscall_entry_rt_sigaction'?
95 | .event_func = __event_probe__compat_syscall_entry_##_template, \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/../include/instrumentation/syscalls/headers/arm-32-syscalls_pointers.h:1894:1: note: in expansion of macro 'TRACE_SYSCALL_TABLE'
1894 | TRACE_SYSCALL_TABLE(sigaction, sigaction, 67, 3)
| ^~~~~~~~~~~~~~~~~~~
/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/lttng-syscalls-entry-compat-table.c:97:27: error: '__event_fields___compat_syscall_entry_sigaction' undeclared here (not in a function); did you mean '__event_fields___compat_syscall_entry_rt_sigaction'?
97 | .fields = __event_fields___compat_syscall_entry_##_template, \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/../include/instrumentation/syscalls/headers/arm-32-syscalls_pointers.h:1894:1: note: in expansion of macro 'TRACE_SYSCALL_TABLE'
1894 | TRACE_SYSCALL_TABLE(sigaction, sigaction, 67, 3)
| ^~~~~~~~~~~~~~~~~~~
/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/lttng-syscalls-entry-compat-table.c:98:26: error: '__event_desc___compat_syscall_entry_sigaction' undeclared here (not in a function); did you mean '__event_desc___compat_syscall_entry_rt_sigaction'?
98 | .desc = &__event_desc___compat_syscall_entry_##_name, \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/../include/instrumentation/syscalls/headers/arm-32-syscalls_pointers.h:1894:1: note: in expansion of macro 'TRACE_SYSCALL_TABLE'
1894 | TRACE_SYSCALL_TABLE(sigaction, sigaction, 67, 3)
| ^~~~~~~~~~~~~~~~~~~
make[4]: *** [/home/mcfrisk/src/base/repo/poky/build_test/tmp/work-shared/genericarm64/kernel-source/scripts/Makefile.build:229: /home/mcfrisk/src/base/repo/poky/build_test/tmp/work/genericarm64-poky-linux/lttng-modules/2.13.18/lttng-modules-2.13.18/src/lttng-syscalls-entry-compat-table.o] Error 1
The build config is described in https://git.yoctoproject.org/poky/tree/meta/recipes-kernel/lttng/lttng-modules_2.13.18.bb
and one patch https://git.yoctoproject.org/poky/tree/meta/recipes-kernel/lttng/lttng-modules/0001-src-Kbuild-change-missing-CONFIG_TRACEPOINTS-to-warn.patch is applied on top of the release.
v2.13.17 is compiling and AFAIK working without issues.
Could you hint on how this could be fixed? Thanks
Files
Updated by Mikko Rapeli 5 days ago
Yocto side bug ticket https://bugzilla.yoctoproject.org/show_bug.cgi?id=15840
Updated by Kienan Stewart 5 days ago
Hi Mikko,
is this in a specific revision of poky? Are there any additional kernel patches being carried?
thanks,
kienan
Updated by Mikko Rapeli 5 days ago
Kienan Stewart wrote in #note-2:
is this in a specific revision of poky? Are there any additional kernel patches being carried?
Yocto does patch the kernel a bit but AFAIK not towards usespace.
Kernel tree and branch are: https://git.yoctoproject.org/linux-yocto/log/?h=v6.12/standard/base
I think something in the sigaction handling broke with the new generation of syscall wrappers.
rt_sigaction seems to work while plain sigaction not. Attached the effective "genericarm64" kernel config,
if that matters.
It does not enable OLD_SIGACTION or COMPAT_OLD_SIGACTION.
Updated by Mikko Rapeli 5 days ago
This workaround allows compilation to pass:
--- include/instrumentation/syscalls/headers/arm-32-syscalls_pointers.h_orig 2025-04-24 13:45:25.416423401 +0000 +++ include/instrumentation/syscalls/headers/arm-32-syscalls_pointers.h 2025-04-24 15:50:30.510443988 +0000 @@ -1890,9 +1890,11 @@ TRACE_SYSCALL_TABLE(chroot, chroot, 61, #ifndef OVERRIDE_TABLE_32_ustat TRACE_SYSCALL_TABLE(ustat, ustat, 62, 2) #endif +#ifdef CONFIG_COMPAT_OLD_SIGACTION #ifndef OVERRIDE_TABLE_32_sigaction TRACE_SYSCALL_TABLE(sigaction, sigaction, 67, 3) #endif +#endif /* CONFIG_COMPAT_OLD_SIGACTION */ #ifndef OVERRIDE_TABLE_32_sigpending TRACE_SYSCALL_TABLE(sigpending, sigpending, 73, 1) #endif
I could not figure out how to handle this through include/instrumentation/syscalls/headers/arm-32-syscalls_pointers_override.h
Updated by Kienan Stewart 5 days ago
Thanks! Makes sense if the config doesn't have OLD_SIGACTION or COMPAT_OLD_SIGACTION.
I can prepare a patch for upstream inclusion. My approach will be to check CONFIG_COMPAT_OLD_SIGACTION in include/instrumentation/syscalls/syscalls_pointers_override.h and set OVERRIDE_TABLE_32_sigaction in consequence
Updated by Kienan Stewart 5 days ago
There could be other similar cases so I'll do a pass on the other instrumented COMPAT syscalls as well.
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