diff options
| author | Edward Cree <ecree@solarflare.com> | 2017-08-07 15:26:19 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-08 17:51:34 -0700 |
| commit | f1174f77b50c94eecaa658fdc56fa69b421de4b8 (patch) | |
| tree | d6e11577190ab47f4c371da21cf1f0f14da66db0 /kernel/bpf/Makefile | |
| parent | e1cb90f2b83b6b48deeba0ac9f1920693cbad7e1 (diff) | |
bpf/verifier: rework value tracking
Unifies adjusted and unadjusted register value types (e.g. FRAME_POINTER is
now just a PTR_TO_STACK with zero offset).
Tracks value alignment by means of tracking known & unknown bits. This
also replaces the 'reg->imm' (leading zero bits) calculations for (what
were) UNKNOWN_VALUEs.
If pointer leaks are allowed, and adjust_ptr_min_max_vals returns -EACCES,
treat the pointer as an unknown scalar and try again, because we might be
able to conclude something about the result (e.g. pointer & 0x40 is either
0 or 0x40).
Verifier hooks in the netronome/nfp driver were changed to match the new
data structures.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/Makefile')
| -rw-r--r-- | kernel/bpf/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/bpf/Makefile b/kernel/bpf/Makefile index 48e92705be59..2f0bcda40e90 100644 --- a/kernel/bpf/Makefile +++ b/kernel/bpf/Makefile @@ -1,6 +1,6 @@ obj-y := core.o -obj-$(CONFIG_BPF_SYSCALL) += syscall.o verifier.o inode.o helpers.o +obj-$(CONFIG_BPF_SYSCALL) += syscall.o verifier.o inode.o helpers.o tnum.o obj-$(CONFIG_BPF_SYSCALL) += hashtab.o arraymap.o percpu_freelist.o bpf_lru_list.o lpm_trie.o map_in_map.o ifeq ($(CONFIG_NET),y) obj-$(CONFIG_BPF_SYSCALL) += devmap.o |