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vmlinux.lds.h: catch UBSAN's "unnamed data" into data

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When building kernel with both LD_DEAD_CODE_DATA_ELIMINATION and
UBSAN, LLVM stack generates lots of "unnamed data" sections:

ld.lld: warning: net/built-in.a(netfilter/utils.o): (.data.$__unnamed_2)
is being placed in '.data.$__unnamed_2'
ld.lld: warning: net/built-in.a(netfilter/utils.o): (.data.$__unnamed_3)
is being placed in '.data.$__unnamed_3'
ld.lld: warning: net/built-in.a(netfilter/utils.o): (.data.$__unnamed_4)
is being placed in '.data.$__unnamed_4'
ld.lld: warning: net/built-in.a(netfilter/utils.o): (.data.$__unnamed_5)
is being placed in '.data.$__unnamed_5'

[...]

Also handle this by adding the related sections to generic definitions.

Signed-off-by: Alexander Lobakin <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Thomas Bogendoerfer <[email protected]>
This commit is contained in:
Alexander Lobakin authored and Thomas Bogendoerfer committed 2021-01-15 15:27:54 +01:00
1 parent 9a427556fb
commit f41b233de0
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+1 -1
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include/asm-generic/vmlinux.lds.h
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@@ -95,7 +95,7 @@
*/
#ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
#define TEXT_MAIN .text .text.[0-9a-zA-Z_]*
#define DATA_MAIN .data .data.[0-9a-zA-Z_]* .data..L* .data..compoundliteral*
#define DATA_MAIN .data .data.[0-9a-zA-Z_]* .data..L* .data..compoundliteral* .data.$__unnamed_*
#define SDATA_MAIN .sdata .sdata.[0-9a-zA-Z_]*
#define RODATA_MAIN .rodata .rodata.[0-9a-zA-Z_]* .rodata..L*
#define BSS_MAIN .bss .bss.[0-9a-zA-Z_]* .bss..compoundliteral*