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Daniel Borkmann 17e8e5d6e0 selftests/bpf: Fix bpf_nf failure upon test rerun 
Alexei reported:

  After fast forwarding bpf-next today bpf_nf test started to fail when
  run twice:

  $ ./test_progs -t bpf_nf
  #17      bpf_nf:OK
  Summary: 1/10 PASSED, 0 SKIPPED, 0 FAILED

  $ ./test_progs -t bpf_nf
  All error logs:
  test_bpf_nf_ct:PASS:test_bpf_nf__open_and_load 0 nsec
  test_bpf_nf_ct:PASS:iptables-legacy -t raw -A PREROUTING -j CONNMARK
  --set-mark 42/0 0 nsec
  (network_helpers.c:102: errno: Address already in use) Failed to bind socket
  test_bpf_nf_ct:FAIL:start_server unexpected start_server: actual -1 < expected 0
  #17/1    bpf_nf/xdp-ct:FAIL
  test_bpf_nf_ct:PASS:test_bpf_nf__open_and_load 0 nsec
  test_bpf_nf_ct:PASS:iptables-legacy -t raw -A PREROUTING -j CONNMARK
  --set-mark 42/0 0 nsec
  (network_helpers.c:102: errno: Address already in use) Failed to bind socket
  test_bpf_nf_ct:FAIL:start_server unexpected start_server: actual -1 < expected 0
  #17/2    bpf_nf/tc-bpf-ct:FAIL
  #17      bpf_nf:FAIL
  Summary: 0/8 PASSED, 0 SKIPPED, 1 FAILED

I was able to locally reproduce as well. Rearrange the connection teardown
so that the client closes its connection first so that we don't need to
linger in TCP time-wait.

Fixes: e81fbd4c1b ("selftests/bpf: Add existing connection bpf_*_ct_lookup() test")
Reported-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/CAADnVQ+0dnDq_v_vH1EfkacbfGnHANaon7zsw10pMb-D9FS0Pw@mail.gmail.com
Link: https://lore.kernel.org/bpf/20230626131942.5100-1-daniel@iogearbox.net
History 2023-06-30 10:35:22 +02:00
arch Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
block - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 2023-06-28 10:28:11 -07:00
certs KEYS: Add missing function documentation 2023-04-24 16:15:52 +03:00
crypto sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
Documentation bpf, docs: Fix definition of BPF_NEG operation 2023-06-29 15:58:50 +02:00
drivers bpf: Replace deprecated -target with --target= for Clang 2023-06-29 15:46:17 +02:00
fs Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
include Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
init - Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in 2023-06-28 10:59:38 -07:00
io_uring Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
ipc Merge branch 'work.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2023-02-24 19:20:07 -08:00
kernel bpf: Replace deprecated -target with --target= for Clang 2023-06-29 15:46:17 +02:00
lib lib/test_bpf: Call page_address() on page acquired with GFP_KERNEL flag 2023-06-29 15:32:25 +02:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
net Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
rust rust: error: impl Debug for Error with errname() integration 2023-06-13 01:24:42 +02:00
samples bpf: Replace deprecated -target with --target= for Clang 2023-06-29 15:46:17 +02:00
scripts Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
security v6.5-rc1-sysctl-next 2023-06-28 16:05:21 -07:00
sound regulator: Updates for v6.5 2023-06-28 13:32:47 -07:00
tools selftests/bpf: Fix bpf_nf failure upon test rerun 2023-06-30 10:35:22 +02:00
usr initramfs: Check negative timestamp to prevent broken cpio archive 2023-04-16 17:37:01 +09:00
virt - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 2023-06-28 10:28:11 -07:00
.clang-format cxl for v6.4 2023-04-30 11:51:51 -07:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore linux-kselftest-kunit-6.4-rc1 2023-04-24 12:31:32 -07:00
.mailmap NFSD 6.5 Release Notes 2023-06-26 10:48:57 -07:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS - Address -Wmissing-prototype warnings 2023-06-26 16:43:54 -07:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
Makefile hardening updates for v6.5-rc1 2023-06-27 21:24:18 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.