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 *354865 86140 0 0 0x4000000 1 syz-executor.0 386121 86650 0 0x2 0x480 0 syz-executor.1 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(ffff800000b3c800) at udv_reference+0x84 sys/uvm/uvm_device.c:230 uvm_mapent_clone(fffffd806f5dbb88,0,3000,0,7,7) at uvm_mapent_clone+0x1a2 sys/uvm/uvm_map.c:3810 uvm_share(fffffd806f5dbb88,0,7,fffffd806f5dba18,20000000,1200000) at uvm_share+0x45c uvm_mapent_share sys/uvm/uvm_map.c:3840 [inline] uvm_share(fffffd806f5dbb88,0,7,fffffd806f5dba18,20000000,1200000) at uvm_share+0x45c sys/uvm/uvm_map.c:3739 vm_impl_init_vmx(ffff800021493810,ffff800021256d20) at vm_impl_init_vmx+0xb4 sys/arch/amd64/amd64/vmm.c:1591 vm_create(ffff800000b57800,ffff800021256d20) at vm_create+0x19b vm_impl_init sys/arch/amd64/amd64/vmm.c:1690 [inline] vm_create(ffff800000b57800,ffff800021256d20) at vm_create+0x19b sys/arch/amd64/amd64/vmm.c:1510 vmmioctl(a00,c5005601,ffff800000b57800,1,ffff800021256d20) at vmmioctl+0x1f2 VOP_IOCTL(fffffd806e0942f0,c5005601,ffff800000b57800,1,fffffd807f7d87e0,ffff800021256d20) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:295 vn_ioctl(fffffd806511def8,c5005601,ffff800000b57800,ffff800021256d20) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800021256d20,ffff8000222a97b8,ffff8000222a9800) at sys_ioctl+0x4a2 syscall(ffff8000222a9880) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000222a9880) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe2231f537c0, count: 1 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: kernel diagnostic assertion "_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_device.c", line 230 ddb{1}> trace 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(ffff800000b3c800) at udv_reference+0x84 sys/uvm/uvm_device.c:230 uvm_mapent_clone(fffffd806f5dbb88,0,3000,0,7,7) at uvm_mapent_clone+0x1a2 sys/uvm/uvm_map.c:3810 uvm_share(fffffd806f5dbb88,0,7,fffffd806f5dba18,20000000,1200000) at uvm_share+0x45c uvm_mapent_share sys/uvm/uvm_map.c:3840 [inline] uvm_share(fffffd806f5dbb88,0,7,fffffd806f5dba18,20000000,1200000) at uvm_share+0x45c sys/uvm/uvm_map.c:3739 vm_impl_init_vmx(ffff800021493810,ffff800021256d20) at vm_impl_init_vmx+0xb4 sys/arch/amd64/amd64/vmm.c:1591 vm_create(ffff800000b57800,ffff800021256d20) at vm_create+0x19b vm_impl_init sys/arch/amd64/amd64/vmm.c:1690 [inline] vm_create(ffff800000b57800,ffff800021256d20) at vm_create+0x19b sys/arch/amd64/amd64/vmm.c:1510 vmmioctl(a00,c5005601,ffff800000b57800,1,ffff800021256d20) at vmmioctl+0x1f2 VOP_IOCTL(fffffd806e0942f0,c5005601,ffff800000b57800,1,fffffd807f7d87e0,ffff800021256d20) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:295 vn_ioctl(fffffd806511def8,c5005601,ffff800000b57800,ffff800021256d20) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800021256d20,ffff8000222a97b8,ffff8000222a9800) at sys_ioctl+0x4a2 syscall(ffff8000222a9880) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000222a9880) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe2231f537c0, count: -14 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff8000222a9120 rbx 0xffff800020d39bff rdx 0x8b rcx 0x2 rax 0x8c r8 0xffffffff81a0be34 kprintf+0x144 r9 0x1 r10 0x12790e43e86637d4 r11 0x2d2c568813eaff59 r12 0xffff800020d39a00 r13 0 r14 0 r15 0x1 rip 0xffffffff81e3e908 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000222a9110 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=354865 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000212567e0,0xffffffff82913618 process=0xffff8000ffffa5b8 user=0xffff8000222a4000, vmspace=0xfffffd806f5dba18 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 86140 447989 96486 0 2 0 syz-executor.0 *86140 354865 96486 0 7 0x4000000 syz-executor.0 86650 386121 69576 0 7 0x482 syz-executor.1 96486 162934 69576 0 2 0x482 syz-executor.0 69576 214068 75479 0 3 0x82 thrsleep syz-fuzzer 69576 250611 75479 0 2 0x4000482 syz-fuzzer 69576 64473 75479 0 3 0x4000082 thrsleep syz-fuzzer 69576 305474 75479 0 3 0x4000082 thrsleep syz-fuzzer 69576 96013 75479 0 3 0x4000082 kqread syz-fuzzer 69576 456854 75479 0 3 0x4000082 thrsleep syz-fuzzer 69576 489948 75479 0 3 0x4000082 thrsleep syz-fuzzer 69576 434074 75479 0 3 0x4000082 thrsleep syz-fuzzer 75479 276752 89414 0 3 0x10008a sigsusp ksh 89414 248647 12877 0 3 0x9a select sshd 31914 95881 1 0 3 0x100083 ttyin getty 12877 371532 1 0 3 0x88 select sshd 89544 164561 82820 74 3 0x100092 bpf pflogd 82820 50251 1 0 3 0x80 netio pflogd 3231 415106 8512 73 3 0x100090 kqread syslogd 8512 407118 1 0 3 0x100082 netio syslogd 56008 260051 1 0 3 0x100080 kqread resolvd 41699 128472 11507 77 3 0x100092 kqread dhcpleased 3938 46802 11507 77 3 0x100092 kqread dhcpleased 11507 374633 1 0 3 0x80 kqread dhcpleased 34559 422750 0 0 3 0x14200 bored smr 63488 145143 0 0 3 0x14200 pgzero zerothread 84290 268294 0 0 3 0x14200 aiodoned aiodoned 50431 243689 0 0 3 0x14200 syncer update 15490 241629 0 0 3 0x14200 cleaner cleaner 43184 260621 0 0 3 0x14200 reaper reaper 17379 277819 0 0 3 0x14200 pgdaemon pagedaemon 6386 93625 0 0 3 0x14200 bored crynlk 22410 35106 0 0 3 0x14200 bored crypto 30541 160408 0 0 3 0x14200 bored viomb 97400 125823 0 0 3 0x40014200 acpi0 acpi0 22384 58160 0 0 3 0x40014200 idle1 66008 158104 0 0 3 0x14200 bored softnet 56951 164533 0 0 3 0x14200 bored systqmp 68436 104497 0 0 3 0x14200 bored systq 38095 316952 0 0 3 0x40014200 bored softclock 6842 242821 0 0 3 0x40014200 idle0 1 343892 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 86140 (syz-executor.0) thread 0xffff800021256d20 (354865) shared rwlock vmmaplk r = 0 (0xfffffd806f5dba30) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 uvm_share+0xd2 vm_map_lock_read_ln sys/uvm/uvm_map.c:5447 [inline] #1 uvm_share+0xd2 sys/uvm/uvm_map.c:3691 #2 vm_impl_init_vmx+0xb4 sys/arch/amd64/amd64/vmm.c:1591 #3 vm_create+0x19b vm_impl_init sys/arch/amd64/amd64/vmm.c:1690 [inline] #3 vm_create+0x19b sys/arch/amd64/amd64/vmm.c:1510 #4 vmmioctl+0x1f2 #5 VOP_IOCTL+0x9a sys/kern/vfs_vops.c:295 #6 vn_ioctl+0xba sys/kern/vfs_vnops.c:531 #7 sys_ioctl+0x4a2 #8 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #9 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd806f5dbba0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x3e2 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5425 #3 uvm_share+0xaa vm_map_lock_read_ln sys/uvm/uvm_map.c:5446 [inline] #3 uvm_share+0xaa sys/uvm/uvm_map.c:3691 #4 vm_impl_init_vmx+0xb4 sys/arch/amd64/amd64/vmm.c:1591 #5 vm_create+0x19b vm_impl_init sys/arch/amd64/amd64/vmm.c:1690 [inline] #5 vm_create+0x19b sys/arch/amd64/amd64/vmm.c:1510 #6 vmmioctl+0x1f2 #7 VOP_IOCTL+0x9a sys/kern/vfs_vops.c:295 #8 vn_ioctl+0xba sys/kern/vfs_vnops.c:531 #9 sys_ioctl+0x4a2 #10 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #11 Xsyscall+0x128 exclusive rwlock vmlistlock r = 0 (0xffff800000655c78) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 vm_create+0x12e vm_impl_init sys/arch/amd64/amd64/vmm.c:1688 [inline] #1 vm_create+0x12e sys/arch/amd64/amd64/vmm.c:1510 #2 vmmioctl+0x1f2 #3 VOP_IOCTL+0x9a sys/kern/vfs_vops.c:295 #4 vn_ioctl+0xba sys/kern/vfs_vnops.c:531 #5 sys_ioctl+0x4a2 #6 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10125 6485K 6615K 78643K 11252 0 pcb 13 8K 8K 78643K 17 0 rtable 106 3K 3K 78643K 173 0 ifaddr 44 10K 10K 78643K 45 0 counters 44 34K 34K 78643K 44 0 ioctlops 1 2K 4K 78643K 1484 0 iov 0 0K 16K 78643K 2 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 6 0 vnodes 1219 77K 77K 78643K 1239 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 3 5K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 14 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 152 0 sigio 0 0K 0K 78643K 5 0 proc 68 87K 111K 78643K 335 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2 0 in_multi 33 2K 2K 78643K 33 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 2K 78643K 409 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 214 26K 27K 78643K 3556 0 UVM aobj 4 3K 3K 78643K 4 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 6 0K 0K 78643K 10 0 temp 79 4199K 4263K 78643K 2614 0 kqueue 10 14K 14K 78643K 10 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 23 0 20 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 45 0 30 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 2187 0 2187 2 1 1 2 0 8 1 tcpcb 736 12 0 8 1 0 1 1 0 8 0 arp 120 6 0 0 1 0 1 1 0 8 0 inpcb 304 52 0 45 2 0 2 2 0 8 1 nd6 48 6 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 2 0 0 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 11 0 0 1 0 1 1 0 8 0 pfstkey 112 11 0 0 1 0 1 1 0 8 0 pfstate 320 11 0 0 1 0 1 1 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 188 0 0 12 0 12 12 0 8 0 art_table 32 189 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 8 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1561 0 150 89 0 89 89 0 8 0 ffsino 272 1561 0 150 95 0 95 95 0 8 0 nchpl 144 1913 0 293 61 0 61 61 0 8 0 uvmvnodes 72 1618 0 0 30 0 30 30 0 8 0 vnodes 224 1618 0 0 96 0 96 96 0 8 0 namei 1024 5200 0 5200 2 1 1 1 0 8 1 percpumem 16 34 0 0 1 0 1 1 0 8 0 vmpool 560 1 0 0 1 0 1 1 0 8 0 scxspl 216 5626 0 5626 7 1 6 6 0 8 6 plimitpl 152 21 0 12 1 0 1 1 0 8 0 sigapl 424 402 0 368 5 0 5 5 0 8 1 futexpl 56 869 0 869 1 0 1 1 0 8 1 knotepl 112 50 0 0 2 0 2 2 0 8 0 kqueuepl 216 111 0 103 1 0 1 1 0 8 0 pipepl 336 92 0 82 2 0 2 2 0 8 1 fdescpl 496 386 0 368 3 0 3 3 0 8 0 filepl 152 1549 0 1433 5 0 5 5 0 8 0 lockfpl 104 7 0 4 1 0 1 1 0 8 0 lockfspl 48 5 0 2 1 0 1 1 0 8 0 sessionpl 144 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 103 0 91 1 0 1 1 0 8 0 zombiepl 144 368 0 367 2 1 1 1 0 8 0 processpl 1072 402 0 367 3 0 3 3 0 8 0 procpl 672 585 0 542 5 0 5 5 0 8 1 sockpl 480 122 0 97 5 0 5 5 0 8 1 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 415 0 0 51 0 51 51 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 460 0 0 29 0 29 29 0 8 0 bufpl 280 3554 0 136 245 0 245 245 0 8 0 anonpl 24 86725 0 66667 126 2 124 124 0 186 1 amapchunkpl 152 7886 0 7274 29 2 27 27 0 158 0 amappl16 200 1089 0 321 41 0 41 41 0 8 0 amappl14 184 4 0 2 1 0 1 1 0 8 0 amappl13 176 90 0 88 1 0 1 1 0 8 0 amappl12 168 3 0 2 1 0 1 1 0 8 0 amappl11 160 51 0 36 1 0 1 1 0 8 0 amappl10 152 46 0 39 1 0 1 1 0 8 0 amappl9 144 263 0 258 1 0 1 1 0 8 0 amappl8 136 426 0 392 2 0 2 2 0 8 0 amappl7 128 130 0 115 1 0 1 1 0 8 0 amappl6 120 122 0 111 1 0 1 1 0 8 0 amappl5 112 276 0 258 1 0 1 1 0 8 0 amappl4 104 572 0 548 1 0 1 1 0 8 0 amappl3 96 52 0 47 1 0 1 1 0 8 0 amappl2 88 533 0 481 2 0 2 2 0 8 0 amappl1 80 9886 0 9441 14 3 11 13 0 8 1 amappl 88 3236 0 3073 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 64 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 387 0 368 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 387 0 368 1 0 1 1 0 8 0 vmmpekpl 168 7130 0 7106 2 0 2 2 0 8 0 vmmpepl 168 41909 0 39818 126 0 126 126 0 357 30 vmsppl 368 386 0 368 2 0 2 2 0 8 0 rwobjpl 56 10754 0 9227 24 1 23 23 0 8 1 pdppl 4096 782 0 736 65 15 50 50 0 8 4 pvpl 32 249620 0 226143 197 0 197 197 0 265 3 pmappl 224 386 0 368 4 2 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 359 0 19 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82809ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82838a18) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82838a18) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82838a18,1) at __mp_acquire_count+0x4c sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:433 sleep_finish(ffff80002169d820,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433 tsleep(ffffffff8291e840,120,ffffffff82432f56,2) at tsleep+0x125 sys/kern/kern_synch.c:158 sys_nanosleep(ffff800021256540,ffff80002169d940,ffff80002169d990) at sys_nanosleep+0x1f5 sys/kern/kern_time.c:299 syscall(ffff80002169da10) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002169da10) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcbcc0, count: 4 ddb{0}> trace x86_ipi_db(ffffffff82809ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82838a18) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82838a18) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82838a18,1) at __mp_acquire_count+0x4c sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:433 sleep_finish(ffff80002169d820,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433 tsleep(ffffffff8291e840,120,ffffffff82432f56,2) at tsleep+0x125 sys/kern/kern_synch.c:158 sys_nanosleep(ffff800021256540,ffff80002169d940,ffff80002169d990) at sys_nanosleep+0x1f5 sys/kern/kern_time.c:299 syscall(ffff80002169da10) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002169da10) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcbcc0, count: -11 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp 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(ffff800000b3c800) at udv_reference+0x84 sys/uvm/uvm_device.c:230 uvm_mapent_clone(fffffd806f5dbb88,0,3000,0,7,7) at uvm_mapent_clone+0x1a2 sys/uvm/uvm_map.c:3810 uvm_share(fffffd806f5dbb88,0,7,fffffd806f5dba18,20000000,1200000) at uvm_share+0x45c uvm_mapent_share sys/uvm/uvm_map.c:3840 [inline] uvm_share(fffffd806f5dbb88,0,7,fffffd806f5dba18,20000000,1200000) at uvm_share+0x45c sys/uvm/uvm_map.c:3739 vm_impl_init_vmx(ffff800021493810,ffff800021256d20) at vm_impl_init_vmx+0xb4 sys/arch/amd64/amd64/vmm.c:1591 vm_create(ffff800000b57800,ffff800021256d20) at vm_create+0x19b vm_impl_init sys/arch/amd64/amd64/vmm.c:1690 [inline] vm_create(ffff800000b57800,ffff800021256d20) at vm_create+0x19b sys/arch/amd64/amd64/vmm.c:1510 vmmioctl(a00,c5005601,ffff800000b57800,1,ffff800021256d20) at vmmioctl+0x1f2 VOP_IOCTL(fffffd806e0942f0,c5005601,ffff800000b57800,1,fffffd807f7d87e0,ffff800021256d20) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:295 vn_ioctl(fffffd806511def8,c5005601,ffff800000b57800,ffff800021256d20) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800021256d20,ffff8000222a97b8,ffff8000222a9800) at sys_ioctl+0x4a2 syscall(ffff8000222a9880) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000222a9880) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe2231f537c0, count: 1 ddb{1}> trace 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(ffff800000b3c800) at udv_reference+0x84 sys/uvm/uvm_device.c:230 uvm_mapent_clone(fffffd806f5dbb88,0,3000,0,7,7) at uvm_mapent_clone+0x1a2 sys/uvm/uvm_map.c:3810 uvm_share(fffffd806f5dbb88,0,7,fffffd806f5dba18,20000000,1200000) at uvm_share+0x45c uvm_mapent_share sys/uvm/uvm_map.c:3840 [inline] uvm_share(fffffd806f5dbb88,0,7,fffffd806f5dba18,20000000,1200000) at uvm_share+0x45c sys/uvm/uvm_map.c:3739 vm_impl_init_vmx(ffff800021493810,ffff800021256d20) at vm_impl_init_vmx+0xb4 sys/arch/amd64/amd64/vmm.c:1591 vm_create(ffff800000b57800,ffff800021256d20) at vm_create+0x19b vm_impl_init sys/arch/amd64/amd64/vmm.c:1690 [inline] vm_create(ffff800000b57800,ffff800021256d20) at vm_create+0x19b sys/arch/amd64/amd64/vmm.c:1510 vmmioctl(a00,c5005601,ffff800000b57800,1,ffff800021256d20) at vmmioctl+0x1f2 VOP_IOCTL(fffffd806e0942f0,c5005601,ffff800000b57800,1,fffffd807f7d87e0,ffff800021256d20) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:295 vn_ioctl(fffffd806511def8,c5005601,ffff800000b57800,ffff800021256d20) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800021256d20,ffff8000222a97b8,ffff8000222a9800) at sys_ioctl+0x4a2 syscall(ffff8000222a9880) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000222a9880) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe2231f537c0, count: -14