syzbot

panic: a thread waited too long to allocate a page
cpuid = 1
time = 1763597462
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0081f5a230
kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0081f5a390
vpanic() at vpanic+0x257/frame 0xfffffe0081f5a550
panic() at panic+0xb5/frame 0xfffffe0081f5a620
vm_pageout_oom() at vm_pageout_oom+0xce4/frame 0xfffffe0081f5a6b0
vm_fault_allocate() at vm_fault_allocate+0xe41/frame 0xfffffe0081f5a830
vm_fault() at vm_fault+0xe20/frame 0xfffffe0081f5abc0
vm_fault_trap() at vm_fault_trap+0xbd/frame 0xfffffe0081f5ac10
trap_pfault() at trap_pfault+0x691/frame 0xfffffe0081f5ad50
trap() at trap+0x128d/frame 0xfffffe0081f5af30
calltrap() at calltrap+0x8/frame 0xfffffe0081f5af30
--- trap 0xc, rip = 0x3a697f, rsp = 0x825b87f08, rbp = 0x825b87f80 ---
KDB: enter: panic
[ thread pid 2876 tid 103288 ]
Stopped at      kdb_enter+0x6e: movq    $0,0x25880a7(%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         0xfffffe0002bf1850
rdx                          0
rbx         0xffffffff82832300  .str.27
rsp         0xfffffe0081f5a370
rbp         0xfffffe0081f5a390
rsi                          0
rdi         0xffffffff8165fb09  printf+0x149
r8                           0
r9                  0xffffffff
r10                    0xd0e5f
r11                       0x17
r12         0xfffffe0082966780
r13         0xfffffffffffffffd
r14         0xffffffff82832300  .str.27
r15                          0
rip         0xffffffff81648eee  kdb_enter+0x6e
rflags                    0x46
kdb_enter+0x6e: movq    $0,0x25880a7(%rip)
db> serialport: VM disconnected.