panic: pmap_san_enter_alloc_4k: no memory to grow shadow map
cpuid = 1
time = 12
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe00887a3730
kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe00887a3890
vpanic() at vpanic+0x257/frame 0xfffffe00887a3a50
panic() at panic+0xb5/frame 0xfffffe00887a3b10
pmap_san_enter_alloc_4k() at pmap_san_enter_alloc_4k+0x4b/frame 0xfffffe00887a3b30
pmap_san_enter() at pmap_san_enter+0x353/frame 0xfffffe00887a3b70
kasan_shadow_map() at kasan_shadow_map+0x78/frame 0xfffffe00887a3b90
pmap_growkernel() at pmap_growkernel+0xd1/frame 0xfffffe00887a3bf0
vm_map_insert1() at vm_map_insert1+0x672/frame 0xfffffe00887a3d30
vm_map_find_locked() at vm_map_find_locked+0xa12/frame 0xfffffe00887a3ea0
vm_map_find() at vm_map_find+0xc7/frame 0xfffffe00887a3f10
kva_import() at kva_import+0xd4/frame 0xfffffe00887a3ff0
vmem_try_fetch() at vmem_try_fetch+0x21e/frame 0xfffffe00887a40e0
vmem_xalloc() at vmem_xalloc+0x538/frame 0xfffffe00887a4180
kva_import_domain() at kva_import_domain+0x5f/frame 0xfffffe00887a41d0
vmem_try_fetch() at vmem_try_fetch+0x21e/frame 0xfffffe00887a42c0
vmem_xalloc() at vmem_xalloc+0x538/frame 0xfffffe00887a4360
vm_thread_kstack_arena_import() at vm_thread_kstack_arena_import+0x9e/frame 0xfffffe00887a43d0
vmem_try_fetch() at vmem_try_fetch+0x21e/frame 0xfffffe00887a44b0
vmem_xalloc() at vmem_xalloc+0x538/frame 0xfffffe00887a4550
vmem_alloc() at vmem_alloc+0xfe/frame 0xfffffe00887a45b0
vm_thread_stack_create() at vm_thread_stack_create+0x2a5/frame 0xfffffe00887a48e0
kstack_import() at kstack_import+0x9b/frame 0xfffffe00887a4930
cache_alloc() at cache_alloc+0x7e5/frame 0xfffffe00887a4a00
cache_alloc_retry() at cache_alloc_retry+0x35/frame 0xfffffe00887a4a40
vm_thread_new() at vm_thread_new+0x91/frame 0xfffffe00887a4ab0
thread_alloc() at thread_alloc+0x72/frame 0xfffffe00887a4af0
fork1() at fork1+0xad6/frame 0xfffffe00887a4c10
sys_fork() at sys_fork+0xe3/frame 0xfffffe00887a4d10
ia32_syscall() at ia32_syscall+0x4d2/frame 0xfffffe00887a4f30
int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0xdfffcf98
KDB: enter: panic
[ thread pid 3199 tid 104029 ]
Stopped at      kdb_enter+0x6e: movq    $0,0x25b6f77(%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         0xffffffff827e1820  .str.27
rsp         0xfffffe00887a3870
rbp         0xfffffe00887a3890
rsi                          serialport: VM disconnected.