CRITICAL: <core> [pass_fd.c:275]: receive_fd(): EOF on 21

ALERT: <core> [main.c:728]: handle_sigs(): child process 9341 exited by a signal 11

ALERT: <core> [main.c:731]: handle_sigs(): core was not generated

INFO: <core> [main.c:743]: handle_sigs(): terminating due to SIGCHLD

INFO: <core> [main.c:794]: sig_usr(): signal 15 received

INFO: <core> [main.c:794]: sig_usr(): signal 15 received

INFO: <core> [main.c:794]: sig_usr(): signal 15 received

...

Is it known ? or may be related to my config ?

Thank you

Thibault