From: Russell King (Oracle) rmk+kernel@armlinux.org.uk
commit 6c7cb60bff7aec24b834343ff433125f469886a3 upstream.
When building for Thumb2, the vectors make use of a local label. Sadly, the Spectre BHB code also uses a local label with the same number which results in the Thumb2 reference pointing at the wrong place. Fix this by changing the number used for the Spectre BHB local label.
Fixes: b9baf5c8c5c3 ("ARM: Spectre-BHB workaround") Tested-by: Nathan Chancellor nathan@kernel.org Signed-off-by: Russell King (Oracle) rmk+kernel@armlinux.org.uk Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm/kernel/entry-armv.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -1040,9 +1040,9 @@ vector_bhb_loop8_\name:
@ bhb workaround mov r0, #8 -1: b . + 4 +3: b . + 4 subs r0, r0, #1 - bne 1b + bne 3b dsb isb b 2b