root@cloudlinux tracing]# systemctl restart ea-php56-php-fpm && ps aux | grep php
root      366509  0.0  0.4 219304  8056 ?        Ss   17:38   0:00 php-fpm: master process (/opt/cpanel/ea-php56/root/etc/php-fpm.conf)
root      366511  0.0  0.0 112692   948 pts/0    S+   17:38   0:00 grep --color=auto php
[root@cloudlinux tracing]# echo > trace
[root@cloudlinux tracing]# grep 366509 -A10 trace
         php-fpm-366509 [000] d... 458324.508915: pno_context: (no_context+0x0/0x2a3) err_code=3 addr=7ffe7076ca00 signal=b
         php-fpm-366509 [000] d... 458324.508917: <stack trace>
 => __do_page_fault
 => trace_do_page_fault
 => do_async_page_fault
 => async_page_fault
 => do_signal
 => do_notify_resume
 => retint_signal
         php-fpm-366509 [000] d... 458324.508919: pfixup_exception: (no_context+0x43/0x2a3 <- fixup_exception) arg1=1
         php-fpm-366509 [000] d... 458324.508920: <stack trace>
 => mm_fault_error
 => __do_page_fault
 => trace_do_page_fault
 => do_async_page_fault
 => async_page_fault
 => do_signal
 => do_notify_resume
 => retint_signal
         php-fpm-366509 [000] d... 458324.509850: pno_context: (no_context+0x0/0x2a3) err_code=3 addr=7ffe7076ca00 signal=b
         php-fpm-366509 [000] d... 458324.509852: <stack trace>
 => __do_page_fault
 => trace_do_page_fault
 => do_async_page_fault
 => async_page_fault
 => save_xstate_sig
 => do_signal
 => do_notify_resume
 => retint_signal
         php-fpm-366509 [000] d... 458324.509852: pfixup_exception: (no_context+0x43/0x2a3 <- fixup_exception) arg1=1
         php-fpm-366509 [000] d... 458324.509854: <stack trace>
 => mm_fault_error
 => __do_page_fault
 => trace_do_page_fault
 => do_async_page_fault
 => async_page_fault
 => save_xstate_sig
 => do_signal
 => do_notify_resume
 => retint_signal
         php-fpm-366509 [000] d... 458324.510869: pno_context: (no_context+0x0/0x2a3) err_code=3 addr=7ffe7076ca00 signal=b
         php-fpm-366509 [000] d... 458324.510872: <stack trace>
 => __do_page_fault
 => trace_do_page_fault
 => do_async_page_fault
 => async_page_fault
 => save_xstate_sig
 => do_signal
 => do_notify_resume
 => retint_signal
         php-fpm-366509 [000] d... 458324.510873: pfixup_exception: (no_context+0x43/0x2a3 <- fixup_exception) arg1=1
         php-fpm-366509 [000] d... 458324.510875: <stack trace>
 => mm_fault_error
 => __do_page_fault
 => trace_do_page_fault
 => do_async_page_fault
 => async_page_fault
 => save_xstate_sig
 => do_signal
 => do_notify_resume
 => retint_signal
         php-fpm-366509 [000] d... 458324.510876: probe1: (force_sigsegv+0x0/0x70)
         php-fpm-366509 [000] d... 458324.510877: <stack trace>
 => do_signal
 => do_notify_resume
 => retint_signal
         php-fpm-366509 [000] dN.. 458324.511159: pcopy_siginfo: (fill_note_info.isra.10+0x4cd/0x830 <- copy_siginfo_to_user) arg1=0
         php-fpm-366509 [000] dN.. 458324.511168: <stack trace>
 => elf_core_dump
 => do_coredump
 => get_signal_to_deliver
 => do_signal
 => do_notify_resume
 => retint_signal
         php-fpm-366966 [000] d... 458325.488370: pcopy_siginfo: (fill_note_info.isra.10+0x4cd/0x830 <- copy_siginfo_to_user) arg1=0
         php-fpm-366966 [000] d... 458325.488389: <stack trace>
 => elf_core_dump
 => do_coredump