Re: [PATCH] tracing: samples: avoid warning about __aeabi_unwind_cpp_pr1

[Steven Rostedt]

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@xxxxxxxxxx> wrote:

> From: Arnd Bergmann <arnd@xxxxxxxx>
> 
> 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@xxxxxxxx>
> ---
>  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      $<