Major - P3 Following test suite in Evergreen has a few divide by zero errors:
For example, one instance of this error is as follows:
I was able to reproduce this bug locally by adding the following assert:
--- a/src/support/time.c
+++ b/src/support/time.c
@@ -7,6 +7,7 @@
*/
#include "wt_internal.h"
+#include <float.h>
/*
* __time_check_monotonic --
@@ -89,6 +90,7 @@ __wt_tsc_to_nsec(WT_SESSION_IMPL *session, uint64_t end, uint64_t begin)
if (end < begin)
return (0);
tsc_diff = (double)(end - begin);
+ WT_ASSERT(session, S2C(session)->tsc_nsec_ratio > DBL_EPSILON);
return ((uint64_t)(tsc_diff / S2C(session)->tsc_nsec_ratio));
}
(gdb) bt #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58 #1 0x00007f01e16ee37a in __GI_abort () at abort.c:89 #2 0x00007f01e1ddbd90 in __wt_abort (session=0x55d63caaacf8) at ../src/os_common/os_abort.c:31 #3 0x00007f01e1e2c8e6 in __wt_assert (session=0x55d63caaacf8, error=0, file_name=0x7f01e1e7f950 <__func__.33150> "__wt_tsc_to_nsec", line_number=93, fmt=0x7f01e1e7f94b "%s") at ../src/support/err.c:501 #4 0x00007f01e1e3e33d in __wt_tsc_to_nsec (session=0x55d63caaacf8, end=8169080459640816, begin=8169080459607018) at ../src/support/time.c:93 #5 0x00007f01e1d3ba9a in __wt_write (session=0x55d63caaacf8, fh=0x55d63cac1a80, offset=0, len=21, buf=0x7f01e1e64790) at ../src/include/os_fhandle.i:198 #6 0x00007f01e1d452d1 in __conn_single (session=0x55d63caaacf8, cfg=0x7ffc402cb670) at ../src/conn/conn_api.c:1776 #7 0x00007f01e1d473a4 in wiredtiger_open (home=0x7ffc402cd0be "sec-db-copy/", event_handler=0x0, config=0x55d63caaac20 ",,log=(recover=error)", connectionp=0x7ffc402cb760) at ../src/conn/conn_api.c:2501 #8 0x000055d63a8cd686 in main (argc=2, argv=0x7ffc402cb8d0) at ../src/utilities/util_main.c:278 (gdb) f 4 #4 0x00007f01e1e3e33d in __wt_tsc_to_nsec (session=0x55d63caaacf8, end=8169080459640816, begin=8169080459607018) at ../src/support/time.c:93 (gdb) p ((WT_CONNECTION_IMPL *)(session)->iface.connection)->tsc_nsec_ratio $1 = 0