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Martin KaFai Lau e6ff92f41b selftests/bpf: Fix tc_redirect_dtime
tc_redirect_dtime was reported flaky from time to time.  It
always fails at the udp test and complains about the bpf@tc-ingress
got a skb->tstamp when handling udp packet.  It is unexpected
because the skb->tstamp should have been cleared when crossing
different netns.

The most likely cause is that the skb is actually a tcp packet
from the earlier tcp test.  It could be the final TCP_FIN handling.

This patch tightens the skb->tstamp check in the bpf prog.  It ensures
the skb is the current testing traffic.  First, it checks that skb
matches the IPPROTO of the running test (i.e. tcp vs udp).
Second, it checks the server port (dst_ns_port).  The server
port is unique for each test (50000 + test_enum).

Also fixed a typo in test_udp_dtime(): s/P100/P101/

Fixes: c803475fd8 ("bpf: selftests: test skb->tstamp in redirect_neigh")
Reported-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20220601234050.2572671-1-kafai@fb.com
2022-06-03 14:53:33 -07:00
arch bpf, riscv: Support riscv jit to provide bpf_line_info 2022-06-02 16:26:01 -07:00
block Page cache changes for 5.19 2022-05-24 19:55:07 -07:00
certs Kbuild updates for v5.19 2022-05-26 12:09:50 -07:00
crypto This update includes the following changes: 2022-05-27 18:06:49 -07:00
Documentation Networking fixes for 5.19-rc1, including fixes from bpf, and netfilter. 2022-06-02 12:50:16 -07:00
drivers Networking fixes for 5.19-rc1, including fixes from bpf, and netfilter. 2022-06-02 12:50:16 -07:00
fs A big pile of assorted fixes and improvements for the filesystem with 2022-06-02 08:59:39 -07:00
include bpf, sockmap: Fix sk->sk_forward_alloc warn_on in sk_stream_kill_queues 2022-06-02 16:26:58 -07:00
init RISC-V Patches for the 5.19 Merge Window, Part 1 2022-05-31 14:10:54 -07:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2022-05-09 18:29:21 -07:00
kernel bpf: Fix KASAN use-after-free Read in compute_effective_progs 2022-06-02 16:26:47 -07:00
lib assoc_array: Fix BUG_ON during garbage collect 2022-06-01 18:29:06 -07:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm RISC-V Patches for the 5.19 Merge Window, Part 1 2022-05-31 14:10:54 -07:00
net bpf, test_run: Remove unnecessary prog type checks 2022-06-03 14:53:33 -07:00
samples sample: bpf: xdp_router_ipv4: Allow the kernel to send arp requests 2022-06-02 16:26:54 -07:00
scripts Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
security linux-kselftest-kunit-5.19-rc1 2022-05-25 11:32:53 -07:00
sound m68knommu: changes for linux 5.19 2022-05-30 10:56:18 -07:00
tools selftests/bpf: Fix tc_redirect_dtime 2022-06-03 14:53:33 -07:00
usr Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
virt VFIO updates for v5.19-rc1 2022-06-01 13:49:15 -07:00
.clang-format clang-format: Fix space after for_each macros 2022-05-20 19:27:16 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: split the second line of *.mod into *.usyms 2022-05-08 03:16:59 +09:00
.mailmap MAINTAINERS: Update Lorenzo Pieralisi's email address 2022-05-31 15:06:19 -05:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS pci-v5.19-fixes-1 2022-06-02 12:11:25 -07:00
Makefile Kbuild updates for v5.19 2022-05-26 12:09:50 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.