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| author | Arnd Bergmann <arnd@arndb.de> | 2021-10-18 15:30:41 +0100 |
|---|---|---|
| committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2021-10-25 13:12:36 +0100 |
| commit | ecb108e3e3f7c692082b7c6fce41779c3835854a (patch) | |
| tree | ca47dc0a2d557a877582352f35012f1682c00c9f /lib/test_fortify/write_overflow-strcpy.c | |
| parent | c6e77bb61a557dcf6f7440497634a5dc7ada0b3f (diff) | |
ARM: 9144/1: forbid ftrace with clang and thumb2_kernel
clang fails to build kernels with THUMB2 and FUNCTION_TRACER
enabled when there is any inline asm statement containing
the frame pointer register r7:
arch/arm/mach-exynos/mcpm-exynos.c:154:2: error: inline asm clobber list contains reserved registers: R7 [-Werror,-Winline-asm]
arch/arm/probes/kprobes/actions-thumb.c:449:3: error: inline asm clobber list contains reserved registers: R7 [-Werror,-Winline-asm]
Apparently gcc should also have warned about this, and the
configuration is actually invalid, though there is some
disagreement on the bug trackers about this.
Link: https://bugs.llvm.org/show_bug.cgi?id=45826
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94986
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'lib/test_fortify/write_overflow-strcpy.c')
0 files changed, 0 insertions, 0 deletions