* [PATCH] tracing: samples: avoid warning about __aeabi_unwind_cpp_pr1
@ 2026-03-23 10:56 Arnd Bergmann
2026-05-13 14:59 ` Steven Rostedt
0 siblings, 1 reply; 2+ messages in thread
From: Arnd Bergmann @ 2026-03-23 10:56 UTC (permalink / raw)
To: Steven Rostedt, Masami Hiramatsu, Nathan Chancellor, Marc Zyngier,
Vincent Donnefort
Cc: Arnd Bergmann, Mathieu Desnoyers, linux-kernel,
linux-trace-kernel
From: Arnd Bergmann <arnd@arndb.de>
The now more verbose check found another symbol missing from the whitelist:
Unexpected symbols in kernel/trace/simple_ring_buffer.o:
U __aeabi_unwind_cpp_pr1
Add this to the Makefile.
Fixes: 1211907ac0b5 ("tracing: Generate undef symbols allowlist for simple_ring_buffer")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
kernel/trace/Makefile | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile
index d662c1a64cd5..aba6a25db17b 100644
--- a/kernel/trace/Makefile
+++ b/kernel/trace/Makefile
@@ -169,8 +169,8 @@ targets += undefsyms_base.o
# because it is not linked into vmlinux.
KASAN_SANITIZE_undefsyms_base.o := y
-UNDEFINED_ALLOWLIST = __asan __gcov __kasan __kcsan __hwasan __sancov __sanitizer __tsan __ubsan __x86_indirect_thunk \
- __msan simple_ring_buffer \
+UNDEFINED_ALLOWLIST = __asan __gcov __kasan __kcsan __hwasan __sancov __sanitizer __tsan __ubsan __msan \
+ __x86_indirect_thunk __aeabi_unwind_cpp simple_ring_buffer \
$(shell $(NM) -u $(obj)/undefsyms_base.o 2>/dev/null | awk '{print $$2}')
quiet_cmd_check_undefined = NM $<
--
2.39.5
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] tracing: samples: avoid warning about __aeabi_unwind_cpp_pr1
2026-03-23 10:56 [PATCH] tracing: samples: avoid warning about __aeabi_unwind_cpp_pr1 Arnd Bergmann
@ 2026-05-13 14:59 ` Steven Rostedt
0 siblings, 0 replies; 2+ messages in thread
From: Steven Rostedt @ 2026-05-13 14:59 UTC (permalink / raw)
To: Vincent Donnefort
Cc: Arnd Bergmann, Masami Hiramatsu, Nathan Chancellor, Marc Zyngier,
Arnd Bergmann, Mathieu Desnoyers, linux-kernel,
linux-trace-kernel
Vincent,
Is this patch needed? That is, did it fall through the cracks?
-- Steve
On Mon, 23 Mar 2026 11:56:41 +0100
Arnd Bergmann <arnd@kernel.org> wrote:
> From: Arnd Bergmann <arnd@arndb.de>
>
> The now more verbose check found another symbol missing from the whitelist:
>
> Unexpected symbols in kernel/trace/simple_ring_buffer.o:
> U __aeabi_unwind_cpp_pr1
>
> Add this to the Makefile.
>
> Fixes: 1211907ac0b5 ("tracing: Generate undef symbols allowlist for simple_ring_buffer")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> kernel/trace/Makefile | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile
> index d662c1a64cd5..aba6a25db17b 100644
> --- a/kernel/trace/Makefile
> +++ b/kernel/trace/Makefile
> @@ -169,8 +169,8 @@ targets += undefsyms_base.o
> # because it is not linked into vmlinux.
> KASAN_SANITIZE_undefsyms_base.o := y
>
> -UNDEFINED_ALLOWLIST = __asan __gcov __kasan __kcsan __hwasan __sancov __sanitizer __tsan __ubsan __x86_indirect_thunk \
> - __msan simple_ring_buffer \
> +UNDEFINED_ALLOWLIST = __asan __gcov __kasan __kcsan __hwasan __sancov __sanitizer __tsan __ubsan __msan \
> + __x86_indirect_thunk __aeabi_unwind_cpp simple_ring_buffer \
> $(shell $(NM) -u $(obj)/undefsyms_base.o 2>/dev/null | awk '{print $$2}')
>
> quiet_cmd_check_undefined = NM $<
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