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| author | Peter Zijlstra <peterz@infradead.org> | 2019-03-07 19:54:25 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-19 08:18:01 +0200 |
| commit | 82055ad3d3edf372e85d67e4e0db098c254b180f (patch) | |
| tree | 2a32fc87ed4594e6f8ab95563f79a8ef61ef5307 /kernel | |
| parent | b08ec06c94fc5575cd2e5daea2db7861c9c72bd0 (diff) | |
| download | linux-stable-82055ad3d3edf372e85d67e4e0db098c254b180f.tar.gz linux-stable-82055ad3d3edf372e85d67e4e0db098c254b180f.tar.bz2 linux-stable-82055ad3d3edf372e85d67e4e0db098c254b180f.zip | |
x86/uaccess, kcov: Disable stack protector
[ Upstream commit 40ea97290b08be2e038b31cbb33097d1145e8169 ]
New tooling noticed this mishap:
kernel/kcov.o: warning: objtool: write_comp_data()+0x138: call to __stack_chk_fail() with UACCESS enabled
kernel/kcov.o: warning: objtool: __sanitizer_cov_trace_pc()+0xd9: call to __stack_chk_fail() with UACCESS enabled
All the other instrumentation (KASAN,UBSAN) also have stack protector
disabled.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/Makefile b/kernel/Makefile index 7a63d567fdb5..df5e3ca30acd 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -30,6 +30,7 @@ KCOV_INSTRUMENT_extable.o := n # Don't self-instrument. KCOV_INSTRUMENT_kcov.o := n KASAN_SANITIZE_kcov.o := n +CFLAGS_kcov.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector) # cond_syscall is currently not LTO compatible CFLAGS_sys_ni.o = $(DISABLE_LTO) |