The patch titled
Subject: ARM: disable KCOV for trusted foundations code
has been added to the -mm tree. Its filename is
arm-disable-kcov-for-trusted-foundations-code.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/arm-disable-kcov-for-trusted-foundations-code.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/arm-disable-kcov-for-trusted-foundations-code.patch
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------------------------------------------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
Subject: ARM: disable KCOV for trusted foundations code
The ARM trusted foundations code is currently broken in linux-next when
CONFIG_KCOV_INSTRUMENT_ALL is set:
/tmp/ccHdQsCI.s: Assembler messages:
/tmp/ccHdQsCI.s:37: Error: .err encountered
/tmp/ccHdQsCI.s:38: Error: .err encountered
/tmp/ccHdQsCI.s:39: Error: .err encountered
scripts/Makefile.build:311: recipe for target 'arch/arm/firmware/trusted_foundations.o' failed
I could not find a function attribute that lets me disable
-fsanitize-coverage=trace-pc for just one function, so this turns it off
for the entire file instead.
Link: http://lkml.kernel.org/r/20180529103636.1535457-1-arnd@xxxxxxxx
Fixes: 758517202bd2e4 ("arm: port KCOV to arm")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
diff -puN arch/arm/firmware/Makefile~arm-disable-kcov-for-trusted-foundations-code arch/arm/firmware/Makefile
--- a/arch/arm/firmware/Makefile~arm-disable-kcov-for-trusted-foundations-code
+++ a/arch/arm/firmware/Makefile
@@ -1 +1,4 @@
obj-$(CONFIG_TRUSTED_FOUNDATIONS) += trusted_foundations.o
+
+# tf_generic_smc() fails to build with -fsanitize-coverage=trace-pc
+KCOV_INSTRUMENT := n
_
Patches currently in -mm which might be from arnd@xxxxxxxx are
arm-disable-kcov-for-trusted-foundations-code.patch
ocfs2-dlmglue-clean-up-timestamp-handling.patch
shmem-use-monotonic-time-for-i_generation.patch
procfs-uptime-use-ktime_get_boottime_ts64.patch
crash-print-timestamp-using-time64_t.patch
nilfs2-use-64-bit-superblock-timstamps.patch
reiserfs-use-monotonic-time-for-j_trans_start_time.patch
reiserfs-remove-obsolete-print_time-function.patch
reiserfs-change-j_timestamp-type-to-time64_t.patch
fat-propagate-64-bit-inode-timestamps.patch
adfs-use-timespec64-for-time-conversion.patch
vmcore-hide-vmcoredd_mmap_dumps-for-nommu-builds.patch
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