Daniel Borkmann c502faf941 bpf, lpm: fix overflows in trie_alloc checks ... Cap the maximum (total) value size and bail out if larger than KMALLOC_MAX_SIZE as otherwise it doesn't make any sense to proceed further, since we're guaranteed to fail to allocate elements anyway in lpm_trie_node_alloc(); likleyhood of failure is still high for large values, though, similarly as with htab case in non-prealloc. Next, make sure that cost vars are really u64 instead of size_t, so that we don't overflow on 32 bit and charge only tiny map.pages against memlock while allowing huge max_entries; cap also the max cost like we do with other map types. Fixes: b95a5c4db0 ("bpf: add a longest prefix match trie map implementation") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-02-08 14:40:03 -05:00
..
arraymap.c	bpf: don't trigger OOM killer under pressure with map alloc	2017-01-18 17:12:26 -05:00
bpf_lru_list.c	bpf: Make unnecessarily global functions static	2017-01-10 21:00:59 -05:00
bpf_lru_list.h	bpf: Add percpu LRU list	2016-11-15 11:50:20 -05:00
cgroup.c	bpf: Add new cgroup attach type to enable sock modifications	2016-12-02 13:46:08 -05:00
core.c	bpf: add initial bpf tracepoints	2017-01-25 13:17:47 -05:00
hashtab.c	bpf: don't trigger OOM killer under pressure with map alloc	2017-01-18 17:12:26 -05:00
helpers.c	bpf: rename ARG_PTR_TO_STACK	2017-01-09 16:56:27 -05:00
inode.c	bpf: add initial bpf tracepoints	2017-01-25 13:17:47 -05:00
lpm_trie.c	bpf, lpm: fix overflows in trie_alloc checks	2017-02-08 14:40:03 -05:00
Makefile	bpf: add a longest prefix match trie map implementation	2017-01-23 16:10:38 -05:00
percpu_freelist.c
percpu_freelist.h
stackmap.c	bpf: don't trigger OOM killer under pressure with map alloc	2017-01-18 17:12:26 -05:00
syscall.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-01-28 10:33:06 -05:00
verifier.c	bpf: enable verifier to add 0 to packet ptr	2017-02-06 22:50:04 -05:00