From 836b2fe544a5e9b5ce116622cb36fba33838c6fd Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 01:33:23 -0700 Subject: selftests/bpf: Check that JMP32 pointer vs zero jumps are not predicted Add jmp32_ptr_vs_zero_jne: the fall-through of the 32-bit compare, which the verifier used to skip, contains an out of bounds map value access, hence w/o the previous patch the program is accepted. See previous patch for detailed description. Reported-by: Nicholas Carlini Suggested-by: Nicholas Carlini Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/bpf/20260904083325.2083493-6-eddyz87@gmail.com Signed-off-by: Kumar Kartikeya Dwivedi --- arch/alpha/lib/Makefile | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 arch/alpha/lib/Makefile (limited to 'arch/alpha/lib/Makefile') diff --git a/arch/alpha/lib/Makefile b/arch/alpha/lib/Makefile new file mode 100644 index 000000000..84046e730 --- /dev/null +++ b/arch/alpha/lib/Makefile @@ -0,0 +1,46 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for alpha-specific library files.. +# + +asflags-y := $(KBUILD_CFLAGS) + +# Many of these routines have implementations tuned for ev6. +# Choose them iff we're targeting ev6 specifically. +ev6-$(CONFIG_ALPHA_EV6) := ev6- + +# Several make use of the cttz instruction introduced in ev67. +ev67-$(CONFIG_ALPHA_EV67) := ev67- + +lib-y = __divqu.o __remqu.o __divlu.o __remlu.o \ + udiv-qrnnd.o \ + udelay.o \ + $(ev6-y)memset.o \ + $(ev6-y)memcpy.o \ + memmove.o \ + checksum.o \ + csum_partial_copy.o \ + $(ev67-y)strlen.o \ + stycpy.o \ + styncpy.o \ + $(ev67-y)strchr.o \ + $(ev67-y)strrchr.o \ + $(ev6-y)memchr.o \ + $(ev6-y)copy_user.o \ + $(ev6-y)clear_user.o \ + $(ev6-y)csum_ipv6_magic.o \ + $(ev6-y)clear_page.o \ + $(ev6-y)copy_page.o \ + fpreg.o \ + callback_srm.o srm_puts.o srm_printk.o \ + fls.o + +# The division routines are built from single source, with different defines. +AFLAGS___divqu.o = -DDIV +AFLAGS___remqu.o = -DREM +AFLAGS___divlu.o = -DDIV -DINTSIZE +AFLAGS___remlu.o = -DREM -DINTSIZE + +$(addprefix $(obj)/,__divqu.o __remqu.o __divlu.o __remlu.o): \ + $(src)/$(ev6-y)divide.S FORCE + $(call if_changed_rule,as_o_S) -- cgit v1.3.1