Yonghong Song 17e3ac8125 bpf: fix bpffs bitfield pretty print ...

Commit 9d5f9f701b18 ("bpf: btf: fix struct/union/fwd types
with kind_flag") introduced kind_flag and used bitfield_size
in the btf_member to directly pretty print member values.

The commit contained a bug where the incorrect parameters could be
passed to function btf_bitfield_seq_show(). The bits_offset
parameter in the function expects a value less than 8.
Instead, the member offset in the structure is passed.

The below is btf_bitfield_seq_show() func signature:
  void btf_bitfield_seq_show(void *data, u8 bits_offset,
                             u8 nr_bits, struct seq_file *m)
both bits_offset and nr_bits are u8 type. If the bitfield
member offset is greater than 256, incorrect value will
be printed.

This patch fixed the issue by calculating correct proper
data offset and bits_offset similar to non kind_flag case.

Fixes: 9d5f9f701b18 ("bpf: btf: fix struct/union/fwd types with kind_flag")
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

2019-01-11 10:40:54 +01:00

..

arraymap.c

bpf: pass struct btf pointer to the map_check_btf() callback

2018-12-12 15:33:33 -08:00

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

btf.c

bpf: fix bpffs bitfield pretty print

2019-01-11 10:40:54 +01:00

cgroup.c

bpf: add cg_skb_is_valid_access for BPF_PROG_TYPE_CGROUP_SKB

2018-10-19 13:49:34 -07:00

core.c

bpf: enable access to ax register also from verifier rewrite

2019-01-02 16:01:24 -08:00

cpumap.c

bpf/cpumap: make sure frame_size for build_skb is aligned if headroom isn't

2018-12-20 23:19:12 +01:00

devmap.c

bpf: devmap: fix wrong interface selection in notifier_call

2018-10-26 00:32:21 +02:00

disasm.c

bpf: Remove struct bpf_verifier_env argument from print_bpf_insn

2018-03-23 17:38:57 +01:00

disasm.h

bpf: Remove struct bpf_verifier_env argument from print_bpf_insn

2018-03-23 17:38:57 +01:00

hashtab.c

bpf: allow zero-initializing hash map seed

2018-11-20 00:53:39 +01:00

helpers.c

bpf: fix direct packet write into pop/peek helpers

2018-10-25 17:02:06 -07:00

inode.c

bpf: decouple btf from seq bpf fs dump and enable more maps

2018-08-13 00:52:45 +02:00

local_storage.c

bpf: enable cgroup local storage map pretty print with kind_flag

2018-12-18 01:11:59 +01:00

lpm_trie.c

bpf: pass struct btf pointer to the map_check_btf() callback

2018-12-12 15:33:33 -08:00

Makefile

bpf: add queue and stack maps

2018-10-19 13:24:31 -07:00

map_in_map.c

bpf: don't allow create maps of per-cpu cgroup local storages

2018-10-01 16:18:33 +02:00

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: fix null pointer dereference on pointer offload

2018-11-16 20:48:27 -08:00

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

queue_stack_maps.c

bpf: fix integer overflow in queue_stack_map

2018-11-22 21:29:40 +01:00

reuseport_array.c

bpf: Introduce BPF_MAP_TYPE_REUSEPORT_SOCKARRAY

2018-08-11 01:58:46 +02:00

stackmap.c

bpf: fix panic in stack_map_get_build_id() on i386 and arm32

2019-01-10 16:02:17 +01:00

syscall.c

Remove 'type' argument from access_ok() function

2019-01-03 18:57:57 -08:00

tnum.c

bpf/verifier: improve register value range tracking with ARSH

2018-04-29 08:45:53 -07:00

verifier.c

bpf: fix sanitation of alu op with pointer / scalar type from different paths

2019-01-05 21:32:38 -08:00

xskmap.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2018-10-19 11:03:06 -07:00