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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 21:54:06 +08:00
linux-next/kernel/bpf
Jonathan Lemon da2577fdd0 bpf: lpm_trie: check left child of last leftmost node for NULL
If the leftmost parent node of the tree has does not have a child
on the left side, then trie_get_next_key (and bpftool map dump) will
not look at the child on the right.  This leads to the traversal
missing elements.

Lookup is not affected.

Update selftest to handle this case.

Reproducer:

 bpftool map create /sys/fs/bpf/lpm type lpm_trie key 6 \
     value 1 entries 256 name test_lpm flags 1
 bpftool map update pinned /sys/fs/bpf/lpm key  8 0 0 0  0   0 value 1
 bpftool map update pinned /sys/fs/bpf/lpm key 16 0 0 0  0 128 value 2
 bpftool map dump   pinned /sys/fs/bpf/lpm

Returns only 1 element. (2 expected)

Fixes: b471f2f1de ("bpf: implement MAP_GET_NEXT_KEY command for LPM_TRIE")
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-06-11 13:52:37 +02:00
..
arraymap.c bpf: allow for key-less BTF in array map 2019-04-09 17:05:46 -07:00
bpf_lru_list.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
bpf_lru_list.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
btf.c bpf: allow for key-less BTF in array map 2019-04-09 17:05:46 -07:00
cgroup.c bpf: add map helper functions push, pop, peek in more BPF programs 2019-04-16 10:24:02 +02:00
core.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cpumap.c bpf: cpumap memory prefetchw optimizations for struct page 2019-04-17 19:09:25 -07:00
devmap.c bpf: devmap: fix use-after-free Read in __dev_map_entry_free 2019-05-14 01:25:49 +02:00
disasm.c bpf: implement lookup-free direct value access for maps 2019-04-09 17:05:46 -07:00
disasm.h bpf: Remove struct bpf_verifier_env argument from print_bpf_insn 2018-03-23 17:38:57 +01:00
hashtab.c bpf, lru: avoid messing with eviction heuristics upon syscall lookup 2019-05-14 10:47:29 -07:00
helpers.c bpf: Introduce bpf_strtol and bpf_strtoul helpers 2019-04-12 13:54:59 -07:00
inode.c bpf: relax inode permission check for retrieving bpf program 2019-05-16 11:31:49 -07:00
local_storage.c bpf: add program side {rd, wr}only support for maps 2019-04-09 17:05:46 -07:00
lpm_trie.c bpf: lpm_trie: check left child of last leftmost node for NULL 2019-06-11 13:52:37 +02:00
Makefile bpf: add queue and stack maps 2018-10-19 13:24:31 -07:00
map_in_map.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
map_in_map.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
offload.c bpf: offload: add priv field for drivers 2019-02-12 17:07:09 +01:00
percpu_freelist.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
percpu_freelist.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
queue_stack_maps.c bpf: add program side {rd, wr}only support for maps 2019-04-09 17:05:46 -07:00
reuseport_array.c bpf: Introduce BPF_MAP_TYPE_REUSEPORT_SOCKARRAY 2018-08-11 01:58:46 +02:00
stackmap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
syscall.c bpf: fix unconnected udp hooks 2019-06-06 16:53:12 -07:00
tnum.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
verifier.c bpf: fix unconnected udp hooks 2019-06-06 16:53:12 -07:00
xskmap.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-10-19 11:03:06 -07:00