netdev - selftest/net: so_txtime.sh fails intermittently - read Resource temporarily unavailable

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Date:   Thu, 14 Nov 2019 14:17:34 +0530
From:   Naresh Kamboju <naresh.kamboju@...aro.org>
To:     "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>, Netdev <netdev@...r.kernel.org>
Cc:     Shuah Khan <shuah@...nel.org>,
        Anders Roxell <anders.roxell@...aro.org>,
        lkft-triage@...ts.linaro.org,
        Willem de Bruijn <willemb@...gle.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: selftest/net: so_txtime.sh fails intermittently - read Resource
 temporarily unavailable

selftests net so_txtime.sh fails intermittently on multiple boards and
linux next and mainline.


# selftests net so_txtime.sh
net: so_txtime.sh_ #
#
: _ #
# SO_TXTIME ipv6 clock monotonic
ipv6: clock_monotonic #
# payloada delay452 expected0 (us)
delay452: expected0_(us) #
#
: _ #
# SO_TXTIME ipv4 clock monotonic
ipv4: clock_monotonic #
# payloada delay97 expected0 (us)
delay97: expected0_(us) #
#
: _ #
# SO_TXTIME ipv6 clock monotonic
ipv6: clock_monotonic #
# payloada delay168 expected0 (us)
delay168: expected0_(us) #
#
: _ #
# SO_TXTIME ipv4 clock monotonic
ipv4: clock_monotonic #
# payloada delay90 expected0 (us)
delay90: expected0_(us) #
#
: _ #
# SO_TXTIME ipv6 clock monotonic
ipv6: clock_monotonic #
# payloada delay10146 expected10000 (us)
delay10146: expected10000_(us) #
#
: _ #
# SO_TXTIME ipv4 clock monotonic
ipv4: clock_monotonic #
# payloada delay10146 expected10000 (us)
delay10146: expected10000_(us) #
#
: _ #
# SO_TXTIME ipv6 clock monotonic
ipv6: clock_monotonic #
# payloada delay10261 expected10000 (us)
delay10261: expected10000_(us) #
# payloadb delay20211 expected20000 (us)
delay20211: expected20000_(us) #
#
: _ #
# SO_TXTIME ipv4 clock monotonic
ipv4: clock_monotonic #
# payloada delay10186 expected10000 (us)
delay10186: expected10000_(us) #
# payloadb delay20387 expected20000 (us)
delay20387: expected20000_(us) #
#
: _ #
# SO_TXTIME ipv6 clock monotonic
ipv6: clock_monotonic #
# payloadb delay20238 expected20000 (us)
delay20238: expected20000_(us) #
# payloada delay20294 expected20000 (us)
delay20294: expected20000_(us) #
#
: _ #
# SO_TXTIME ipv4 clock monotonic
ipv4: clock_monotonic #
# payloadb delay20258 expected20000 (us)
delay20258: expected20000_(us) #
# payloada delay20313 expected20000 (us)
delay20313: expected20000_(us) #
#
: _ #
# SO_TXTIME ipv6 clock tai
ipv6: clock_tai #
# ./so_txtime read Resource temporarily unavailable
read: Resource_temporarily #
#
: _ #
# SO_TXTIME ipv6 clock tai
ipv6: clock_tai #
# ./so_txtime read Resource temporarily unavailable
read: Resource_temporarily #
#
: _ #
# SO_TXTIME ipv6 clock tai
ipv6: clock_tai #
# payloada delay10097 expected10000 (us)
delay10097: expected10000_(us) #
#
: _ #
# SO_TXTIME ipv4 clock tai
ipv4: clock_tai #
# payloada delay9957 expected10000 (us)
delay9957: expected10000_(us) #
#
: _ #
# SO_TXTIME ipv6 clock tai
ipv6: clock_tai #
# payloada delay10382 expected10000 (us)
delay10382: expected10000_(us) #
# ./so_txtime read Resource temporarily unavailable
read: Resource_temporarily #
[FAIL] 24 selftests net so_txtime.sh # exit=1
selftests: net_so_txtime.sh [FAIL]

Test run full log,
https://lkft.validation.linaro.org/scheduler/job/1010545#L1234

Test results comparison link,
https://qa-reports.linaro.org/lkft/linux-next-oe/tests/kselftest/net_so_txtime.sh
https://qa-reports.linaro.org/lkft/linux-mainline-oe/tests/kselftest/net_so_txtime.sh

Best regards
Naresh Kamboju