kernel warning at kern/src/printfmt.c:141, 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 [<0xffffffffc204904e>] in vprintfmt at src/printfmt.c:141
#04 [<0xffffffffc2049312>] in vsnprintf at src/printfmt.c:328
#05 [<0xffffffffc2058539>] in vset_errstr at src/syscall.c:509
#06 [<0xffffffffc205866b>] in set_error at src/syscall.c:542
#07 [<0xffffffffc2039a29>] in cmderror at src/ns/parse.c:121
#08 [<0xffffffffc2039b1b>] in lookupcmd at src/ns/parse.c:152
#09 [<0xffffffffc2084165>] in procctlreq at drivers/dev/proc.c:1329
#10 [<0xffffffffc208458e>] in procwrite at drivers/dev/proc.c:1147
#11 [<0xffffffffc2040639>] in rwrite at src/ns/sysfile.c:1117
#12 [<0xffffffffc204088b>] in syswrite at src/ns/sysfile.c:1135
#13 [<0xffffffffc20593e9>] in sys_write at src/syscall.c:1785
#14 [<0xffffffffc2059f49>] in syscall at src/syscall.c:2578
#15 [<0xffffffffc205aaf8>] in run_local_syscall at src/syscall.c:2615
#16 [<0xffffffffc205b039>] in prep_syscalls at src/syscall.c:2635
#17 [<0xffffffffc20ac812>] in sysenter_callwrapper at arch/x86/trap.c:877
kernel panic at kern/arch/x86/trap.c:318, from core 1: Proc-ful Page Fault in the Kernel at 0x000000000000000a!
HW TRAP frame at 0xfffffff00008e9d0 on core 1
  rax  0x00000000000002c0
  rbx  0xfffffff00008eb18
  rcx  0x0000000000000005
  rdx  0x0000000000000005
  rbp  0xfffffff00008eb08
  rsi  0xfffffff00008eb18
  rdi  0xffffffffc2048830
  r8   0xffff8000000b8fa0
  r9   0x0000000000000f00
  r10  0xffff8000000b8f00
  r11  0xffff8000000b8ec0
  r12  0xffffffffc2048830
  r13  0xfffffff00008eb70
  r14  0x00000000ffffffff
  r15  0xffff800004888216
  trap 0x0000000e Page Fault
  gsbs 0xffffffffc8e37dc0
  fsbs 0x0000000000000000
  err  0x--------00000000
  rip  0xffffffffc2018f81
  cs   0x------------0008
  flag 0x0000000000010206
  rsp  0xfffffff00008ea98
  ss   0x------------0010
Backtrace of kernel context on Core 1:
#01 [<0xffffffffc2018f81>] in printemac at src/net/eipconv.c:61
#02 [<0xffffffffc2049312>] in vsnprintf at src/printfmt.c:328
#03 [<0xffffffffc2058539>] in vset_errstr at src/syscall.c:509
#04 [<0xffffffffc205866b>] in set_error at src/syscall.c:542
#05 [<0xffffffffc2039a29>] in cmderror at src/ns/parse.c:121
#06 [<0xffffffffc2039b1b>] in lookupcmd at src/ns/parse.c:152
#07 [<0xffffffffc2084165>] in procctlreq at drivers/dev/proc.c:1329
#08 [<0xffffffffc208458e>] in procwrite at drivers/dev/proc.c:1147
#09 [<0xffffffffc2040639>] in rwrite at src/ns/sysfile.c:1117
#10 [<0xffffffffc204088b>] in syswrite at src/ns/sysfile.c:1135
#11 [<0xffffffffc20593e9>] in sys_write at src/syscall.c:1785
#12 [<0xffffffffc2059f49>] in syscall at src/syscall.c:2578
#13 [<0xffffffffc205aaf8>] in run_local_syscall at src/syscall.c:2615
#14 [<0xffffffffc205b039>] in prep_syscalls at src/syscall.c:2635
#15 [<0xffffffffc20ac812>] in sysenter_callwrapper at arch/x86/trap.c:877