Messages in this thread Patch in this message | | | Date | Tue, 8 Dec 2020 23:01:57 +1100 | From | Stephen Rothwell <> | Subject | Re: linux-next: build warning after merge of the akpm tree |
| |
Hi Stephen,
On Fri, 4 Dec 2020 21:00:00 +1100 Stephen Rothwell <sfr@canb.auug.org.au> wrote: > > Hi all, > > After merging the akpm tree, today's linux-next build (powerpc > allyesconfig) produced warnings like this: > > ld: warning: orphan section `.data..Lubsan_data177' from `arch/powerpc/oprofile/op_model_pa6t.o' being placed in section `.data..Lubsan_data177' > > (lots of these latter ones)
781584 of them today!
> I don't know what produced these, but it is in the akpm-current or > akpm trees.
Presumably the result of commit
186c3e18dba3 ("ubsan: enable for all*config builds")
from the akpm-current tree.
arch/powerpc/kernel/vmlinux.lds.S has:
#ifdef CONFIG_PPC32 .data : AT(ADDR(.data) - LOAD_OFFSET) { DATA_DATA #ifdef CONFIG_UBSAN *(.data..Lubsan_data*) *(.data..Lubsan_type*) #endif *(.data.rel*) *(SDATA_MAIN)
added by commit
beba24ac5913 ("powerpc/32: Add .data..Lubsan_data*/.data..Lubsan_type* sections explicitly")
in 2018, but no equivalent for 64 bit.
I will try the following patch tomorrow:
From: Stephen Rothwell <sfr@canb.auug.org.au> Date: Tue, 8 Dec 2020 22:58:24 +1100 Subject: [PATCH] powerpc: Add .data..Lubsan_data*/.data..Lubsan_type* sections explicitly
Similarly to commit
beba24ac5913 ("powerpc/32: Add .data..Lubsan_data*/.data..Lubsan_type* sections explicitly")
since CONFIG_UBSAN bits can now be enabled for all*config.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> --- arch/powerpc/kernel/vmlinux.lds.S | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index 3b4c26e94328..0318ba436f34 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -296,6 +296,10 @@ SECTIONS #else .data : AT(ADDR(.data) - LOAD_OFFSET) { DATA_DATA +#ifdef CONFIG_UBSAN + *(.data..Lubsan_data*) + *(.data..Lubsan_type*) +#endif *(.data.rel*) *(.toc1) *(.branch_lt) -- 2.29.2 -- Cheers, Stephen Rothwell [unhandled content-type:application/pgp-signature] | |