kernel warning at kern/src/printfmt.c:189, from core 1: _x && _x < ULIM
Stack Backtrace on Core 1:
#01 [<0xffffffffc200a42c>] in backtrace at src/kdebug.c:235
#02 [<0xffffffffc2009c54>] in _warn at src/init.c:326
#03 [<0xffffffffc20490f4>] in vprintfmt at src/printfmt.c:189
#04 [<0xffffffffc2049322>] in vsnprintf at src/printfmt.c:328
#05 [<0xffffffffc2058549>] in vset_errstr at src/syscall.c:509
#06 [<0xffffffffc205867b>] in set_error at src/syscall.c:542
#07 [<0xffffffffc207d6fe>] in kprof_write at drivers/dev/kprof.c:416
#08 [<0xffffffffc2040649>] in rwrite at src/ns/sysfile.c:1117
#09 [<0xffffffffc204089b>] in syswrite at src/ns/sysfile.c:1135
#10 [<0xffffffffc20593f9>] in sys_write at src/syscall.c:1785
#11 [<0xffffffffc2059f59>] in syscall at src/syscall.c:2577
#12 [<0xffffffffc205ab08>] in run_local_syscall at src/syscall.c:2614
#13 [<0xffffffffc205b049>] in prep_syscalls at src/syscall.c:2634
#14 [<0xffffffffc20ac912>] in sysenter_callwrapper at arch/x86/trap.c:877
[kernel] Invalid syscall 0 for proc 88
	Args: 0x0000000020000200, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000
SW TRAP frame (partial) at 0xffffffffc8e383a0 on core 3
  rbx  0x000030000003ce00
  rbp  0x000030000003cef0
  r12  0x0000000000000000
  r13  0x000000000048585b
  r14  0x0000000000487438
  r15  0x0000000000000000
  gsbs 0x0000000000000000
  fsbs 0x0000000000000000
  rip  0x00000000004375ce
  rsp  0x000030000003cd20
 mxcsr 0x00001f80
 fpucw 0x037f