kernel panic at kern/arch/x86/trap.c:325, from core 3: Proc-ful Page Fault in the Kernel at 0x0000000000100108!
HW TRAP frame at 0xfffffff0010c1a30 on core 3
  rax  0x0000000000200200
  rbx  0x0000000000000000
  rcx  0xffff800005153de2
  rdx  0x0000000000100100
  rbp  0xfffffff0010c1b98
  rsi  0xffff800005a24420
  rdi  0xffff800005a25420
  r8   0x0000000000000000
  r9   0xffffffffc90a7ac0
  r10  0x0000000000000020
  r11  0xffff800005153fa0
  r12  0xffff800005153de2
  r13  0xffff800005a25420
  r14  0xffff800005a25420
  r15  0xffff800005a24420
  trap 0x0000000e Page Fault
  gsbs 0xffffffffc8f7a340
  fsbs 0x0000000000000000
  err  0x--------00000002
  rip  0xffffffffc2044364
  cs   0x------------0008
  flag 0x0000000000010246
  rsp  0xfffffff0010c1af8
  ss   0x------------0010
Backtrace of kernel context on Core 3:
#01 [<0xffffffffc2044364>] in tree_file_rename at src/ns/tree_file.c:928
#02 [<0xffffffffc20447c7>] in tree_chan_rename at src/ns/tree_file.c:980
#03 [<0xffffffffc2034229>] in __namec_from at src/ns/chan.c:1301
#04 [<0xffffffffc2034c43>] in namec at src/ns/chan.c:1530
#05 [<0xffffffffc203e911>] in sysrename at src/ns/sysfile.c:883
#06 [<0xffffffffc2056fd2>] in sys_rename at src/syscall.c:2398
#07 [<0xffffffffc205a249>] in syscall at src/syscall.c:2582
#08 [<0xffffffffc205add8>] in run_local_syscall at src/syscall.c:2619
#09 [<0xffffffffc205b319>] in prep_syscalls at src/syscall.c:2639
#10 [<0xffffffffc20b7a92>] in sysenter_callwrapper at arch/x86/trap.c:932