AcoSail/kernel_optimize_test
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d0aab7d4e9
kernel_optimize_test/kernel/bpf
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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