Alexei Starovoitov 3c4bb079e1 bpf: support 8-byte metafield access ... commit cedaf52693f02372010548c63b2e63228b959099 upstream. The verifier supported only 4-byte metafields in struct __sk_buff and struct xdp_md. The metafields in upcoming struct bpf_perf_event are 8-byte to match register width in struct pt_regs. Teach verifier to recognize 8-byte metafield access. The patch doesn't affect safety of sockets and xdp programs. They check for 4-byte only ctx access before these conditions are hit. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-12-17 21:55:15 +01:00
..
arraymap.c	bpf: generally move prog destruction to RCU deferral	2018-11-10 07:41:37 -08:00
core.c	bpf: fix divides by zero	2018-02-03 17:04:24 +01:00
hashtab.c	bpf: map_get_next_key to return first key on NULL	2018-05-16 10:06:46 +02:00
helpers.c	bpf: avoid copying junk bytes in bpf_get_current_comm()	2016-04-20 15:42:01 +09:00
inode.c	bpf, inode: disallow userns mounts	2016-06-24 10:18:17 -07:00
Makefile	bpf: add support for persistent maps/progs	2015-11-02 22:48:39 -05:00
syscall.c	bpf: generally move prog destruction to RCU deferral	2018-11-10 07:41:37 -08:00
verifier.c	bpf: support 8-byte metafield access	2018-12-17 21:55:15 +01:00