Thread (212 messages) 212 messages, 19 authors, 2020-09-10
STALE2094d REVIEWED: 1 (0M)
Revisions (11)
  1. v1 [diff vs current]
  2. v2 [diff vs current]
  3. v1 current
  4. v2 [diff vs current]
  5. v3 [diff vs current]
  6. v4 [diff vs current]
  7. v5 [diff vs current]
  8. v6 [diff vs current]
  9. v7 [diff vs current]
  10. v8 [diff vs current]
  11. v9 [diff vs current]

[PATCH 15/22] drivers/misc/lkdtm: disable LTO for rodata.o

From: Sami Tolvanen <samitolvanen@google.com>
Date: 2020-06-24 20:34:15
Also in: linux-arch, linux-kbuild, linux-pci, lkml
Subsystem: char and misc drivers, linux kernel dump test module (lkdtm), the rest · Maintainers: Arnd Bergmann, Greg Kroah-Hartman, Kees Cook, Linus Torvalds

Disable LTO for rodata.o to allow objcopy to be used to
manipulate sections.

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Acked-by: Kees Cook <redacted>
---
 drivers/misc/lkdtm/Makefile | 1 +
 1 file changed, 1 insertion(+)
diff --git a/drivers/misc/lkdtm/Makefile b/drivers/misc/lkdtm/Makefile
index c70b3822013f..dd4c936d4d73 100644
--- a/drivers/misc/lkdtm/Makefile
+++ b/drivers/misc/lkdtm/Makefile
@@ -13,6 +13,7 @@ lkdtm-$(CONFIG_LKDTM)		+= cfi.o
 
 KASAN_SANITIZE_stackleak.o	:= n
 KCOV_INSTRUMENT_rodata.o	:= n
+CFLAGS_REMOVE_rodata.o		+= $(CC_FLAGS_LTO)
 
 OBJCOPYFLAGS :=
 OBJCOPYFLAGS_rodata_objcopy.o	:= \
-- 
2.27.0.212.ge8ba1cc988-goog


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help