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authorArnd Bergmann <arnd@arndb.de>2020-05-21 16:20:37 +0200
committerThomas Gleixner <tglx@linutronix.de>2020-06-11 20:03:59 +0200
commitea91a1d45d19469001a4955583187b0d75915759 (patch)
tree172cb2b83453189187fc3d1463cc3429b6064fdc /net
parentRebase locking/kcsan to locking/urgent (diff)
downloadlinux-ea91a1d45d19469001a4955583187b0d75915759.tar.xz
linux-ea91a1d45d19469001a4955583187b0d75915759.zip
ubsan, kcsan: Don't combine sanitizer with kcov on clang
Clang does not allow -fsanitize-coverage=trace-{pc,cmp} together with -fsanitize=bounds or with ubsan: clang: error: argument unused during compilation: '-fsanitize-coverage=trace-pc' [-Werror,-Wunused-command-line-argument] clang: error: argument unused during compilation: '-fsanitize-coverage=trace-cmp' [-Werror,-Wunused-command-line-argument] To avoid the warning, check whether clang can handle this correctly or disallow ubsan and kcsan when kcov is enabled. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Marco Elver <elver@google.com> Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Marco Elver <elver@google.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://bugs.llvm.org/show_bug.cgi?id=45831 Link: https://lore.kernel.org/lkml/20200505142341.1096942-1-arnd@arndb.de Link: https://lkml.kernel.org/r/20200521142047.169334-2-elver@google.com
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