FYI, we noticed the following commit: commit: 0148239373801a9c0c63eefc481b710ae7ce2941 ("net: sock: Use double send/recv buff value to compare with max value") url: https://github.com/0day-ci/linux/commits/fgao-ikuai8-com/net-sock-Use-double-send-recv-buff-value-to-compare-with-max-value/20170208-213745 in testcase: ltp with following parameters: test: net.sctp test-description: The LTP testsuite contains a collection of tools for testing the Linux kernel and related features. test-url: http://linux-test-project.github.io/ on test machine: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 128G memory caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): user :notice: [ 54.674772] tag=test_1_to_1_sockopt stime=1487093637 user :notice: [ 54.675078] cmdline="test_1_to_1_sockopt" user :notice: [ 54.675194] contacts="" user :notice: [ 54.675333] analysis=exit user :notice: [ 54.675513] <<>> user :notice: [ 54.676497] test_1_to_1_sockopt.c 1 TPASS : setsockopt() with a bad socket descriptor - EBADF user :notice: [ 54.677439] test_1_to_1_sockopt.c 2 TPASS : setsockopt() with an invalid socket - ENOTSOCK user :notice: [ 54.678409] test_1_to_1_sockopt.c 3 TPASS : setsockopt() with an invalid level - ENOPROTOOPT user :notice: [ 54.679378] test_1_to_1_sockopt.c 4 TPASS : setsockopt() with invalid option buffer - EFAULT user :notice: [ 54.680375] test_1_to_1_sockopt.c 5 TPASS : setsockopt() with invalid option name - EOPNOTSUPP user :notice: [ 54.681354] test_1_to_1_sockopt.c 6 TPASS : getsockopt() with a bad socket descriptor - EBADF user :notice: [ 54.682297] test_1_to_1_sockopt.c 7 TPASS : getsockopt() with an invalid socket - ENOTSOCK user :notice: [ 54.683265] test_1_to_1_sockopt.c 8 TPASS : getsockopt() with invalid option buffer - EFAULT user :notice: [ 54.684267] test_1_to_1_sockopt.c 9 TPASS : getsockopt() with invalid option name - EOPNOTSUPP user :notice: [ 54.685079] test_1_to_1_sockopt.c 10 TPASS : getsockopt() SCTP_INITMSG - SUCCESS user :notice: [ 54.685885] test_1_to_1_sockopt.c 11 TPASS : setsockopt() SCTP_INITMSG - SUCCESS user :notice: [ 54.686653] test_1_to_1_sockopt.c 12 TPASS : setsockopt() SO_LINGER - SUCCESS user :notice: [ 54.687418] test_1_to_1_sockopt.c 13 TPASS : getsockopt() SO_LINGER - SUCCESS user :notice: [ 54.688187] test_1_to_1_sockopt.c 14 TPASS : getsockopt() SO_RCVBUF - SUCCESS user :notice: [ 54.688979] test_1_to_1_sockopt.c 15 TPASS : getsockopt() SCTP_STATUS - SUCCESS user :notice: [ 54.689752] test_1_to_1_sockopt.c 16 TPASS : setsockopt() SO_RCVBUF - SUCCESS user :notice: [ 54.691539] test_1_to_1_sockopt.c 17 TBROK : test_1_to_1_sockopt.c:341: Comparison failed:Set value and got value differs Set Value=4096 Get Value=8192 user :notice: [ 54.692520] test_1_to_1_sockopt.c 18 TBROK : test_1_to_1_sockopt.c:341: Remaining cases broken To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Xiaolong