Daniel Borkmann a316338cb7 bpf: fix wrong exposure of map_flags into fdinfo for lpm ... trie_alloc() always needs to have BPF_F_NO_PREALLOC passed in via attr->map_flags, since it does not support preallocation yet. We check the flag, but we never copy the flag into trie->map.map_flags, which is later on exposed into fdinfo and used by loaders such as iproute2. Latter uses this in bpf_map_selfcheck_pinned() to test whether a pinned map has the same spec as the one from the BPF obj file and if not, bails out, which is currently the case for lpm since it exposes always 0 as flags. Also copy over flags in array_map_alloc() and stack_map_alloc(). They always have to be 0 right now, but we should make sure to not miss to copy them over at a later point in time when we add actual flags for them to use. Fixes: b95a5c4db0 ("bpf: add a longest prefix match trie map implementation") Reported-by: Jarno Rajahalme <jarno@covalent.io> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-05-25 13:44:28 -04:00
..
arraymap.c	bpf: fix wrong exposure of map_flags into fdinfo for lpm	2017-05-25 13:44:28 -04:00
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: Add percpu LRU list	2016-11-15 11:50:20 -05:00
cgroup.c	bpf: pass sk to helper functions	2017-04-11 14:54:19 -04:00
core.c	mm, vmalloc: use __GFP_HIGHMEM implicitly	2017-05-08 17:15:13 -07:00
hashtab.c	bpf: map_get_next_key to return first key on NULL	2017-04-25 11:57:45 -04:00
helpers.c	bpf: rename ARG_PTR_TO_STACK	2017-01-09 16:56:27 -05:00
inode.c	fs: constify tree_descr arrays passed to simple_fill_super()	2017-04-26 23:54:06 -04:00
lpm_trie.c	bpf: fix wrong exposure of map_flags into fdinfo for lpm	2017-05-25 13:44:28 -04:00
Makefile	bpf: Add array of maps support	2017-03-22 15:45:45 -07:00
map_in_map.c	bpf: Add array of maps support	2017-03-22 15:45:45 -07:00
map_in_map.h	bpf: Add array of maps support	2017-03-22 15:45:45 -07:00
percpu_freelist.c
percpu_freelist.h
stackmap.c	bpf: fix wrong exposure of map_flags into fdinfo for lpm	2017-05-25 13:44:28 -04:00
syscall.c	bpf: Add strict alignment flag for BPF_PROG_LOAD.	2017-05-11 14:19:00 -04:00
verifier.c	bpf: properly reset caller saved regs after helper call and ld_abs/ind	2017-05-25 13:44:27 -04:00