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linux-xiaomi-chiron/tools/testing/selftests
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Cong Wang a7e65fe7d8 selftests/bpf: Retry for EAGAIN in udp_redir_to_connected() 
We use non-blocking sockets for testing sockmap redirections,
and got some random EAGAIN errors from UDP tests.

There is no guarantee the packet would be immediately available
to receive as soon as it is sent out, even on the local host.
For UDP, this is especially true because it does not lock the
sock during BH (unlike the TCP path). This is probably why we
only saw this error in UDP cases.

No matter how hard we try to make the queue empty check accurate,
it is always possible for recvmsg() to beat ->sk_data_ready().
Therefore, we should just retry in case of EAGAIN.

Fixes: d6378af615 ("selftests/bpf: Add a test case for udp sockmap")
Reported-by: Jiang Wang <jiang.wang@bytedance.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/20210615021342.7416-3-xiyou.wangcong@gmail.com
2021-06-21 16:48:21 +02:00
..
arm64 kselftest/arm64: Add missing stddef.h include to BTI tests 2021-05-10 10:19:01 +01:00
bpf selftests/bpf: Retry for EAGAIN in udp_redir_to_connected() 2021-06-21 16:48:21 +02:00
breakpoints selftests: breakpoints: Use correct error messages in breakpoint_test_arm64.c 2021-02-08 17:04:41 -07:00
capabilities
cgroup kselftests: cgroup: update kmem test for new vmstat implementation 2021-04-30 11:20:38 -07:00
clone3 selftests/clone3: Fix build error 2020-12-07 14:34:55 -07:00
core selftests/core: add regression test for CLOSE_RANGE_UNSHARE | CLOSE_RANGE_CLOEXEC 2020-12-19 16:23:19 +01:00
cpu-hotplug
cpufreq
dma dma-mapping: benchmark: Add support for multi-pages map/unmap 2021-04-02 16:41:08 +02:00
dmabuf-heaps kselftests: dmabuf-heaps: Add extra checking that allocated buffers are zeroed 2021-02-08 16:25:53 -07:00
drivers selftests: mlxsw: Fix mausezahn invocation in ERSPAN scale test 2021-04-23 14:01:28 -07:00
efivarfs
exec tools/testing/selftests/exec: fix link error 2021-05-22 15:09:07 -10:00
filesystems kselftest: introduce new epoll test case 2021-05-06 19:24:13 -07:00
firmware firmware_loader: Remove unnecessary conversion to bool 2021-03-23 14:51:50 +01:00
fpu
ftrace selftests/ftrace: Add '!event' synthetic event syntax check 2021-02-11 16:22:32 -05:00
futex
gpio selftests: gpio: update .gitignore 2021-03-08 11:59:16 +01:00
ia64
intel_pstate selftests: intel_pstate: ftime() is deprecated 2020-11-10 14:41:32 -07:00
ipc selftests/ipc: remove unneeded semicolon 2021-02-08 16:32:43 -07:00
ir
kcmp
kexec
kmod
kselftest tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
kvm * Lots of bug fixes. 2021-05-10 12:30:45 -07:00
landlock landlock: Enable user space to infer supported features 2021-04-22 12:22:11 -07:00
lib
livepatch
lkdtm lkdtm: Add REPORT_STACK for checking stack offsets 2021-04-08 14:05:20 +02:00
locking
media_tests
membarrier
memfd selftests/memfd: Fix implicit declaration warnings 2020-11-10 14:42:04 -07:00
memory-hotplug
mincore selftests: remove duplicate include 2021-05-07 00:26:33 -07:00
mount
mount_setattr tests: add mount_setattr() selftests 2021-01-24 14:43:45 +01:00
mqueue
nci selftests: Add .gitignore for nci test suite 2021-05-20 12:51:24 -07:00
net selftests: net: use bash to run udpgro_fwd test case 2021-06-16 12:56:10 -07:00
netfilter selftests: netfilter: add fib test case 2021-06-09 21:06:35 +02:00
nsfs
ntb
openat2 selftests: openat2: add RESOLVE_ conflict test 2020-12-03 10:16:28 +01:00
perf_events signal: Deliver all of the siginfo perf data in _perf 2021-05-18 16:20:54 -05:00
pid_namespace
pidfd
powerpc Merge branch 'akpm' (patches from Andrew) 2021-05-07 00:34:51 -07:00
prctl
proc selftests: proc: test subset=pid 2021-05-06 19:24:11 -07:00
pstore
ptp
ptrace
rcutorture Merge branches 'bitmaprange.2021.03.08a', 'fixes.2021.03.15a', 'kvfree_rcu.2021.03.08a', 'mmdumpobj.2021.03.08a', 'nocb.2021.03.15a', 'poll.2021.03.24a', 'rt.2021.03.08a', 'tasks.2021.03.08a', 'torture.2021.03.08a' and 'torturescript.2021.03.22a' into HEAD 2021-03-24 17:20:18 -07:00
resctrl selftests/resctrl: Change a few printed messages 2021-04-07 16:37:49 -06:00
rseq rseq/selftests: Fix MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ build error under other arch. 2020-12-07 14:09:45 -07:00
rtc
safesetid
seccomp powerpc/64s/syscall: Use pt_regs.trap to distinguish syscall ABI difference between sc and scv syscalls 2021-05-21 00:58:03 +10:00
sgx x86/sgx: Expose SGX architectural definitions to the kernel 2021-04-06 09:43:41 +02:00
sigaltstack
size
sparc64
splice
static_keys
sync
syscall_user_dispatch entry: Use different define for selector variable in SUD 2021-02-06 00:21:42 +01:00
sysctl
tc-testing net/sched: fq_pie: re-factor fix for fq_pie endless loop 2021-05-23 17:16:09 -07:00
timens selftests/timens: Fix gettime_perf to work on powerpc 2021-04-21 22:52:32 +10:00
timers selftests/timers: Fix spelling mistake "clocksourc" -> "clocksource" 2021-03-26 11:37:17 -06:00
tmpfs
tpm2
uevent
user
vDSO selftests/vDSO: fix ABI selftest on riscv 2021-02-08 16:38:34 -07:00
vm selftests/vm: gup_test: test faulting in kernel, and verify pinnable pages 2021-05-05 11:27:26 -07:00
watchdog
wireguard wireguard: selftests: make sure rp_filter is disabled on vethc 2021-06-04 14:25:14 -07:00
x86 selftests/x86: Add a missing .note.GNU-stack section to thunks_32.S 2021-03-18 11:05:14 +01:00
zram
.gitignore
gen_kselftest_tar.sh
kselftest.h
kselftest_deps.sh selftests: remove obsolete gpio references from kselftest_deps.sh 2021-02-15 11:43:28 +01:00
kselftest_harness.h selftests: kselftest_harness.h: partially fix kernel-doc markups 2021-01-21 14:06:00 -07:00
kselftest_install.sh
kselftest_module.h kselftest: add support for skipped tests 2021-02-15 11:07:42 +01:00
lib.mk Networking changes for 5.13. 2021-04-29 11:57:23 -07:00
Makefile selftests/landlock: Add user space tests 2021-04-22 12:22:11 -07:00
run_kselftest.sh selftests/run_kselftest.sh: fix dry-run typo 2020-11-10 14:51:39 -07:00