Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> writes: > Hi Stephen, > > On Fri, 4 Dec 2020 21:00:00 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> 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. They should really be in DATA_DATA or similar shouldn't they? cheers