panic: kernel diagnostic assertion "_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_device.c", line 230
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*207328   1995      0           0  0x4000000    1  syz-executor.1
 415651  26211      0         0x2  0x4000480    0  syz-fuzzer
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff824502ee) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff824bffea,ffffffff824476b7,e6,ffffffff824ce6c6) at __assert+0x25 sys/kern/subr_prf.c:161
udv_reference(ffff800000b0d6c0) at udv_reference+0x84 sys/uvm/uvm_device.c:230
uvm_mapent_clone(fffffd807f008170,2000,1fe000,0,7,7) at uvm_mapent_clone+0x1a2 sys/uvm/uvm_map.c:3810
uvm_share(fffffd807f008170,0,7,fffffd807f008730,20000000,200000) at uvm_share+0x45c uvm_mapent_share sys/uvm/uvm_map.c:3840 [inline]
uvm_share(fffffd807f008170,0,7,fffffd807f008730,20000000,200000) at uvm_share+0x45c sys/uvm/uvm_map.c:3739
vm_impl_init_vmx(ffff8000212975e0,ffff800021216a80) at vm_impl_init_vmx+0xb4 sys/arch/amd64/amd64/vmm.c:1591
vm_create(ffff800000b7a800,ffff800021216a80) at vm_create+0x19b vm_impl_init sys/arch/amd64/amd64/vmm.c:1690 [inline]
vm_create(ffff800000b7a800,ffff800021216a80) at vm_create+0x19b sys/arch/amd64/amd64/vmm.c:1510
vmmioctl(a00,c5005601,ffff800000b7a800,1,ffff800021216a80) at vmmioctl+0x1f2
VOP_IOCTL(fffffd806e3e43d0,c5005601,ffff800000b7a800,1,fffffd807f7d8720,ffff800021216a80) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:295
vn_ioctl(fffffd8066ffc318,c5005601,ffff800000b7a800,ffff800021216a80) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800021216a80,ffff800022cbf488,ffff800022cbf4d0) at sys_ioctl+0x4a2
syscall(ffff800022cbf550) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800022cbf550) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x32c45bd3d70, count: 1
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