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Daniel Borkmann 9013341594 bpf, verifier: detect misconfigured mem, size argument pair 
I've seen two patch proposals now for helper additions that used
ARG_PTR_TO_MEM or similar in reg_X but no corresponding ARG_CONST_SIZE
in reg_X+1. Verifier won't complain in such case, but it will omit
verifying the memory passed to the helper thus ending up badly.
Detect such buggy helper function signature and bail out during
verification rather than finding them through review.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 		2018-01-19 18:36:59 -08:00
..
Makefile bpf: only build sockmap with CONFIG_INET 2018-01-04 19:01:14 +01:00
arraymap.c bpf: arraymap: use bpf_map_init_from_attr() 2018-01-18 22:54:25 +01:00
bpf_lru_list.c bpf: lru: Lower the PERCPU_NR_SCANS from 16 to 4 2017-04-17 13:55:52 -04:00
bpf_lru_list.h bpf: Only set node->ref = 1 if it has not been set 2017-09-01 09:57:39 -07:00
cgroup.c bpf/cgroup: fix a verification error for a CGROUP_DEVICE type prog 2017-12-19 01:43:29 +01:00
core.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-11 22:13:42 -05:00
cpumap.c bpf: cpumap: make some functions static 2018-01-17 00:12:58 +01:00
devmap.c bpf: add helper for copying attrs to struct bpf_map 2018-01-14 23:36:29 +01:00
disasm.c bpf: allow for correlation of maps and helpers in dump 2017-12-20 18:09:40 -08:00
disasm.h bpf: annotate bpf_insn_print_t with __printf 2018-01-17 01:15:05 +01:00
hashtab.c bpf: add helper for copying attrs to struct bpf_map 2018-01-14 23:36:29 +01:00
helpers.c bpf: rename ARG_PTR_TO_STACK 2017-01-09 16:56:27 -05:00
inode.c fix "netfilter: xt_bpf: Fix XT_BPF_MODE_FD_PINNED mode of 'xt_bpf_info_v1'" 2018-01-05 11:43:39 -05:00
lpm_trie.c bpf: implement MAP_GET_NEXT_KEY command for LPM_TRIE map 2018-01-19 23:26:41 +01:00
map_in_map.c bpf: Add syscall lookup support for fd array and htab 2017-06-29 13:13:25 -04:00
map_in_map.h bpf: Add syscall lookup support for fd array and htab 2017-06-29 13:13:25 -04:00
offload.c bpf: offload: report device information about offloaded maps 2018-01-18 22:54:25 +01:00
percpu_freelist.c bpf: fix lockdep splat 2017-11-15 19:46:32 +09:00
percpu_freelist.h bpf: introduce percpu_freelist 2016-03-08 15:28:31 -05:00
sockmap.c bpf: add helper for copying attrs to struct bpf_map 2018-01-14 23:36:29 +01:00
stackmap.c bpf: add helper for copying attrs to struct bpf_map 2018-01-14 23:36:29 +01:00
syscall.c bpf: offload: report device information about offloaded maps 2018-01-18 22:54:25 +01:00
tnum.c bpf/verifier: track signed and unsigned min/max values 2017-08-08 17:51:34 -07:00
verifier.c bpf, verifier: detect misconfigured mem, size argument pair 2018-01-19 18:36:59 -08:00