kernel panic at kern/src/syscall.c:898, from core 0: assertion failed: !ret
Stack Backtrace on Core 0:
#01 [<0xffffffffc200a7fc>] in backtrace at src/kdebug.c:235
#02 [<0xffffffffc2009f95>] in _panic at src/init.c:275
#03 [<0xffffffffc205a2f3>] in sys_fork at src/syscall.c:898
#04 [<0xffffffffc2059f29>] in syscall at src/syscall.c:2580
#05 [<0xffffffffc205aad8>] in run_local_syscall at src/syscall.c:2617
#06 [<0xffffffffc205b019>] in prep_syscalls at src/syscall.c:2637
#07 [<0xffffffffc20b6282>] in sysenter_callwrapper at arch/x86/trap.c:926