Vladislav Vaintroub added a comment - 2019-05-27 13:43 Elkin , I reassigned that to you because it is unobvious what fails, and it will be much easier for you to tell what is wrong. WolfSSL does not do system calls, strace looks pretty similar, no specific errors there.

Vladislav Vaintroub added a comment - 2019-05-27 13:51 Relevant part of strace for WolfSSL (filtered futex, gettimeofday, clock_gettime noise) 80671 recvfrom(44, "\3REPLACE INTO t1 VALUES (4)", 27, MSG_DONTWAIT, NULL, NULL) = 27 80671 write(19, "\t\t 10 Query\tREPLACE INTO t1 V"..., 42) = 42 80671 write(67, "\271\366\335-\332B\243\315\325*\0\0\0\336\252|\253\31xm\5\347\\s\240\211\24\f\n\17(\322"..., 110) = 110 80671 close(3) = 0 80671 open("./master-bin.index", O_RDWR|O_CREAT|O_CLOEXEC, 0660) = 3 80671 getcwd("/home/wlad/10.4-wolf/mysql-test/var/mysqld.1/data", 4096) = 50 80671 lseek(3, 0, SEEK_END) = 20 80671 lseek(3, 0, SEEK_CUR) = 20 80671 open("./master-bin.~rec~", O_RDWR|O_CREAT|O_CLOEXEC, 0660) = 75 80671 lseek(75, 0, SEEK_CUR) = 0 80671 lseek(75, 0, SEEK_END) = 0 80671 close(75) = 0 80671 unlink("./master-bin.~rec~") = 0 80671 unlink("./master-bin.~rec~") = -1 ENOENT (No such file or directory) 80671 open("./master-bin.~rec~", O_RDWR|O_CREAT|O_CLOEXEC, 0660) = 75 80671 lseek(75, 0, SEEK_CUR) = 0 80671 write(75, "./master-bin.000002\n", 20) = 20 80671 stat("./master-bin.000002", 0x7f15756d42a0) = -1 ENOENT (No such file or directory) 80671 open("./master-bin.000002", O_WRONLY|O_CREAT|O_CLOEXEC, 0660) = 76 80671 getcwd("/home/wlad/10.4-wolf/mysql-test/var/mysqld.1/data", 4096) = 50 80671 lseek(76, 0, SEEK_CUR) = 0 80671 lseek(76, 0, SEEK_CUR) = 0 80671 open("/dev/urandom", O_RDONLY) = 77 80671 read(77, ":\324u\313\25\260\366\304\354\223Mo\234\5\273qA\332Q\34\323\372\222:\3605\24W\375`O\270"..., 52) = 52 80671 close(77) = 0 80671 write(76, "\376bin\326\335\353\\\17\1\0\0\0\374\0\0\0\0\1\0\0\1\0\4\00010.4.6-"..., 383) = 383 80671 write(3, "./master-bin.000002\n", 20) = 20 80671 close(75) = 0 80671 unlink("./master-bin.~rec~") = 0 80671 pwrite64(67, "\0", 1, 21) = 1 80671 close(67) = 0 80671 sendto(44, "]\0\0\1\377\2\4#HY000Error writing file "..., 97, MSG_DONTWAIT, NULL, 0) = 97 80671 recvfrom(44, 0x7f150019caf0, 4, MSG_DONTWAIT, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable) 80671 poll([{fd=44, events=POLLIN|POLLPRI}], 1, 28800000) = 1 ([{fd=44, revents=POLLIN|POLLHUP}]) 80671 recvfrom(44, "\1\0\0\0", 4, MSG_DONTWAIT, NULL, NULL) = 4 80671 recvfrom(44, "\1", 1, MSG_DONTWAIT, NULL, NULL) = 1 80671 write(19, "\t\t 10 Quit\t\n", 15) = 15 80671 close(44) = 0