syzbot

panic: failed to reclaim memory
cpuid = 1
time = 32808
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe00573de470
kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe00573de5d0
vpanic() at vpanic+0x257/frame 0xfffffe00573de790
panic() at panic+0xb5/frame 0xfffffe00573de860
vm_pageout_oom() at vm_pageout_oom+0xce4/frame 0xfffffe00573de8f0
vm_pageout_worker() at vm_pageout_worker+0xf43/frame 0xfffffe00573deea0
vm_pageout() at vm_pageout+0x2ce/frame 0xfffffe00573deef0
fork_exit() at fork_exit+0xcc/frame 0xfffffe00573def30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00573def30
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 8 tid 100078 ]
Stopped at      kdb_enter+0x6e: movq    $0,0x25be9b7(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b
es                        0x3b
fs                        0x13
gs                        0x1b
ss                           0
rax                       0x12
rcx         0xfffffe00033eee30
rdx                          0
rbx         0xffffffff827af6a0  .str.27
rsp         0xfffffe00573de5b0
rbp         0xfffffe00573de5d0
rsi                          0
rdi         0xffffffff81614639  printf+0x149
r8                           0
r9                  0xffffffff
r10                          0
r11                       0x1f
r12         0xfffffe005480c000
r13         0xfffffffffffffffd
r14         0xffffffff827af6a0  .str.27
r15                          0
rip         0xffffffff815fe7de  kdb_enter+0x6e
rflags                    0x46
kdb_enter+0x6e: movq    $0,0x25be9b7(%rip)
db> show proc
Process 8 (pagedaemon) at 0xfffffe0008029060:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff83b478e0
 ABI: null
 flag: 0x10000284  flag2: 0
 reaper: 0xffffffff83b478e0 reapsubtree: 8
 sigparent: 20
 vmspace: 0xffffffff83b48880
   (map 0xffffffff83b48880)
   (map.pmap 0xffffffff83b48920)
   (pmap 0xffffffff83b48990)
 threads: 3
100078                   Run     CPU 1                       [dom0]
100082                   D       laundp  0xffffffff827b49e0  [laundry: dom0]
100083                   D       umarcls 0xffffffff827b49e1  [uma]
db> serialport: VM disconnected.