John Fastabend b05545e15e bpf: sockmap, fix transition through disconnect without close ...

It is possible (via shutdown()) for TCP socks to go trough TCP_CLOSE
state via tcp_disconnect() without actually calling tcp_close which
would then call our bpf_tcp_close() callback. Because of this a user
could disconnect a socket then put it in a LISTEN state which would
break our assumptions about sockets always being ESTABLISHED state.

To resolve this rely on the unhash hook, which is called in the
disconnect case, to remove the sock from the sockmap.

Reported-by: Eric Dumazet <edumazet@google.com>
Fixes: 1aa12bdf1bfb ("bpf: sockmap, add sock close() hook to remove socks")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

2018-09-22 02:46:41 +02:00

..

arraymap.c

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

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

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: btf: Fix end boundary calculation for type section

2018-09-12 22:00:23 +02:00

cgroup.c

bpf: introduce update_effective_progs()

2018-08-07 14:29:55 +02:00

core.c

bpf: fix a rcu usage warning in bpf_prog_array_copy_core()

2018-08-16 21:55:32 +02:00

cpumap.c

bpf: fix redirect to map under tail calls

2018-08-17 15:56:23 -07:00

devmap.c

bpf: fix redirect to map under tail calls

2018-08-17 15:56:23 -07:00

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: use per htab salt for bucket hash

2018-08-23 18:45:47 +02:00

helpers.c

bpf: introduce the bpf_get_local_storage() helper function

2018-08-03 00:47:32 +02:00

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

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

lpm_trie.c

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

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

Makefile

bpf: Introduce BPF_MAP_TYPE_REUSEPORT_SOCKARRAY

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

map_in_map.c

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

2018-08-03 00:47:32 +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: offload: allow program and map sharing per-ASIC

2018-07-18 15:10:34 +02:00

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

reuseport_array.c

bpf: Introduce BPF_MAP_TYPE_REUSEPORT_SOCKARRAY

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

sockmap.c

bpf: sockmap, fix transition through disconnect without close

2018-09-22 02:46:41 +02:00

stackmap.c

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

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

syscall.c

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

2018-08-15 15:04:25 -07:00

tnum.c

bpf/verifier: improve register value range tracking with ARSH

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

verifier.c

bpf/verifier: disallow pointer subtraction

2018-09-12 23:30:02 +02:00

xskmap.c

bpf: fix redirect to map under tail calls

2018-08-17 15:56:23 -07:00