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authorPeter Oberparleiter <oberpar@linux.ibm.com>2018-09-13 12:59:59 +0200
committerStephen Rothwell <sfr@canb.auug.org.au>2018-10-12 08:54:58 +1100
commit8dcf86caa1e3daf4a6ccf38e97f4f752b411f829 (patch)
treeae7b52e3e4b92eb90fbe745d75550a54c034292b /include/asm-generic
parent0778a9f2dd924c3af41971ba40eec44793aea531 (diff)
downloadlinux-8dcf86caa1e3daf4a6ccf38e97f4f752b411f829.tar.gz
vmlinux.lds.h: Fix incomplete .text.exit discards
Enabling CONFIG_GCOV_PROFILE_ALL=y causes linker errors on ARM:

  `.text.exit' referenced in section `.ARM.exidx.text.exit':
  defined in discarded section `.text.exit'

  `.text.exit' referenced in section `.fini_array.00100':
  defined in discarded section `.text.exit'

And related errors on NDS32:

  `.text.exit' referenced in section `.dtors.65435':
  defined in discarded section `.text.exit'

The gcov compiler flags cause certain compiler versions to generate
additional destructor-related sections that are not yet handled by the
linker script, resulting in references between discarded and
non-discarded sections.

Since destructors are not used in the Linux kernel, fix this by
discarding these additional sections.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Greentime Hu <green.hu@gmail.com>
Tested-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Diffstat (limited to 'include/asm-generic')
-rw-r--r--include/asm-generic/vmlinux.lds.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 7b75ff6e2fce..b4d74b1c1e1d 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -613,8 +613,8 @@
 
 #define EXIT_DATA							\
 	*(.exit.data .exit.data.*)					\
-	*(.fini_array)							\
-	*(.dtors)							\
+	*(.fini_array .fini_array.*)					\
+	*(.dtors .dtors.*)						\
 	MEM_DISCARD(exit.data*)						\
 	MEM_DISCARD(exit.rodata*)