panic: kernel diagnostic assertion "uvm_page_owner_locked_p(pg)" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 1270 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *502243 53536 0 0x14000 0x200 0K reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259e2bb) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82612784,ffffffff8258b302,4f6,ffffffff825c1a6a) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pageunwire(fffffd80078e9c40) at uvm_pageunwire+0x16b sys/uvm/uvm_page.c:1270 uvm_fault_unwire_locked(fffffd806aa50d00,c29654c5000,c29654c6000) at uvm_fault_unwire_locked+0x226 sys/uvm/uvm_fault.c:1672 uvm_unmap_kill_entry_withlock(fffffd806aa50d00,fffffd8067baf000,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:2136 uvm_map_teardown(fffffd806aa50d00) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd806aa50d00) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771 uvmspace_free(fffffd806aa50d00) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3684 reaper(ffff800021143a48) at reaper+0x19a sys/kern/kern_exit.c:454 end trace frame: 0x0, count: 6 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "uvm_page_owner_locked_p(pg)" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 1270 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259e2bb) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82612784,ffffffff8258b302,4f6,ffffffff825c1a6a) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pageunwire(fffffd80078e9c40) at uvm_pageunwire+0x16b sys/uvm/uvm_page.c:1270 uvm_fault_unwire_locked(fffffd806aa50d00,c29654c5000,c29654c6000) at uvm_fault_unwire_locked+0x226 sys/uvm/uvm_fault.c:1672 uvm_unmap_kill_entry_withlock(fffffd806aa50d00,fffffd8067baf000,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:2136 uvm_map_teardown(fffffd806aa50d00) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd806aa50d00) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771 uvmspace_free(fffffd806aa50d00) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3684 reaper(ffff800021143a48) at reaper+0x19a sys/kern/kern_exit.c:454 end trace frame: 0x0, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000211492a0 rbx 0xffffffff8297ac5f cpu_info_full_primary+0x2c5f rdx 0 rcx 0 rax 0xffff800021143a48 r8 0x101010101010101 r9 0x8080808080808080 r10 0x863642fce1973100 r11 0x1f309dfb6104d7de r12 0xffffffff8297aa60 cpu_info_full_primary+0x2a60 r13 0 r14 0 r15 0x1 rip 0xffffffff813db0c8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021149290 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (reaper) pid=502243 stat=onproc flags process=14000 proc=200 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800021143ce8,0xffff8000211437b8 process=0xffff8000fffff608 user=0xffff800021144000, vmspace=0xffffffff82b76ce8 estcpu=36, cpticks=39, pctcpu=12.77 user=0, sys=4, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 22263 46242 3870 0 3 0x82 wait syz-executor.0 89034 20770 3870 0 3 0x82 wait syz-executor.5 5688 367275 0 0 3 0x14200 bored sosplice 28948 458827 3870 0 3 0x82 wait syz-executor.6 96753 240143 3870 0 3 0x82 wait syz-executor.7 58992 458133 3870 0 3 0x82 wait syz-executor.4 84190 156183 3870 0 3 0x82 wait syz-executor.3 67985 244447 3870 0 3 0x82 wait syz-executor.1 3870 161833 96970 0 3 0x82 thrsleep syz-fuzzer 3870 144467 96970 0 2 0x4000482 syz-fuzzer 3870 44262 96970 0 3 0x4000082 thrsleep syz-fuzzer 3870 323998 96970 0 3 0x4000082 kqread syz-fuzzer 3870 299349 96970 0 3 0x4000082 thrsleep syz-fuzzer 3870 267174 96970 0 3 0x4000082 thrsleep syz-fuzzer 3870 440079 96970 0 2 0x4000002 syz-fuzzer 3870 148201 96970 0 3 0x4000082 thrsleep syz-fuzzer 3870 41109 96970 0 3 0x4000082 thrsleep syz-fuzzer 96970 135735 31868 0 3 0x10008a sigsusp ksh 31868 445954 25346 0 3 0x9a kqread sshd 69006 439511 1 0 3 0x100083 ttyin getty 25346 444707 1 0 3 0x88 kqread sshd 61985 523091 94227 74 3 0x1100092 bpf pflogd 94227 465681 1 0 3 0x80 netio pflogd 94213 52536 30405 73 2 0x1100010 syslogd 30405 167596 1 0 3 0x100082 netio syslogd 48603 335164 1 0 3 0x100080 kqread resolvd 85007 346716 82989 77 3 0x100092 kqread dhcpleased 6367 125392 82989 77 3 0x100092 kqread dhcpleased 82989 263629 1 0 3 0x80 kqread dhcpleased 82877 467752 0 0 3 0x14200 bored smr 43287 20209 0 0 2 0x14200 zerothread 11607 252283 0 0 3 0x14200 aiodoned aiodoned 20891 235257 0 0 3 0x14200 syncer update 56023 11864 0 0 3 0x14200 cleaner cleaner *53536 502243 0 0 7 0x14200 reaper 80946 377426 0 0 3 0x14200 pgdaemon pagedaemon 67493 305707 0 0 3 0x14200 bored viomb 43924 31066 0 0 3 0x40014200 acpi0 acpi0 79136 281213 0 0 7 0x40014200 idle1 31256 241092 0 0 3 0x14200 bored softnet 66516 395305 0 0 3 0x14200 bored softnet 96482 346475 0 0 3 0x14200 bored softnet 58575 332296 0 0 3 0x14200 bored softnet 26408 285701 0 0 3 0x14200 bored systqmp 96134 434113 0 0 3 0x14200 bored systq 78157 222495 0 0 2 0x40014200 softclock 4801 322710 0 0 3 0x40014200 idle0 1 312800 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff82b1bad8) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 uvm_fault_unwire_locked+0x21e sys/uvm/uvm_fault.c:1671 #4 uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:2136 #5 uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #5 uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771 #6 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3684 #7 reaper+0x19a sys/kern/kern_exit.c:454 #8 proc_trampoline+0x1c Process 3870 (syz-fuzzer) thread 0xffff8000fffee7e8 (440079) exclusive rrwlock inode r = 0 (0xfffffd8068ac50a0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3101 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806f0f6e70) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3086 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 Process 94213 (syslogd) thread 0xffff8000ffff77b0 (52536) exclusive rrwlock inode r = 0 (0xfffffd806e7c92c0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 sys_fsync+0xf5 sys/kern/vfs_syscalls.c:2924 #6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 Process 53536 (reaper) thread 0xffff800021143a48 (502243) exclusive rwlock uobjlk r = 0 (0xfffffd806aa36e50) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 uvm_fault_unwire_locked+0x1c6 sys/uvm/uvm_fault.c:1659 #3 uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:2136 #4 uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #4 uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771 #5 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3684 #6 reaper+0x19a sys/kern/kern_exit.c:454 #7 proc_trampoline+0x1c exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82af04c0) #0 witness_lock+0x44d #1 uvm_unmap_kill_entry_withlock+0x4c sys/uvm/uvm_map.c:2134 #2 uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #2 uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771 #3 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3684 #4 reaper+0x19a sys/kern/kern_exit.c:454 #5 proc_trampoline+0x1c exclusive mutex &uvm.pageqlock r = 0 (0xffffffff82b1bad8) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 uvm_fault_unwire_locked+0x21e sys/uvm/uvm_fault.c:1671 #4 uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:2136 #5 uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #5 uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771 #6 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3684 #7 reaper+0x19a sys/kern/kern_exit.c:454 #8 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10184 6482K 7736K 78643K 17578 0 pcb 13 15K 17K 78643K 602 0 rtable 217 10K 13K 78643K 1407 0 ifaddr 85 18K 20K 78643K 561 0 sysctl 2 0K 0K 78643K 2 0 counters 52 35K 35K 78643K 142 0 ioctlops 0 0K 4K 78643K 2084 0 iov 0 0K 28K 78643K 354 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1430 89K 90K 78643K 3370 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 34 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 698 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 9 29K 89K 78643K 4163 0 sigio 0 0K 0K 78643K 21 0 proc 70 91K 128K 78643K 820 0 subproc 91 5K 6K 78643K 156 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 430 0 in_multi 77 5K 6K 78643K 280 0 ether_multi 1 0K 0K 78643K 102 0 mrt 1 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 73 334K 334K 78643K 73 0 exec 0 0K 2K 78643K 1314 0 tdb 3 0K 0K 78643K 3 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 335 284K 284K 78643K 25280 0 UVM aobj 131 4K 4K 78643K 132 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 159 0 NDP 11 0K 1K 78643K 83 0 temp 153 4786K 21140K 78643K 46422 0 kqueue 12 18K 31K 78643K 414 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 120 944 0 941 14 13 1 3 0 8 0 rtentry 112 198 0 109 4 0 4 4 0 8 0 unpcb 136 2132 0 2117 31 30 1 8 0 8 0 syncache 296 16 0 16 3 3 0 1 0 8 0 tcpcb 736 932 0 928 36 35 1 13 0 8 0 arp 120 30 0 15 1 0 1 1 0 8 0 inpcb 312 3117 0 3107 55 53 2 14 0 8 0 nd6 48 46 0 21 1 0 1 1 0 8 0 pkpcb 40 61 0 61 3 3 0 1 0 8 0 kcovpl 48 12 0 5 1 0 1 1 0 8 0 ppxss 1248 28 0 28 6 6 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 21 0 19 3 2 1 1 0 482 0 pffrnode 88 21 0 19 3 2 1 1 0 8 0 pffrent 40 59 0 57 3 2 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 pfrktable 1344 68 0 60 2 1 1 2 0 8 0 pftag 88 6 0 2 1 0 1 1 0 8 0 pfqueue 264 9 0 9 2 2 0 1 0 8 0 pfstitem 24 22 0 20 1 0 1 1 0 8 0 pfstkey 112 26 0 24 1 0 1 1 0 8 0 pfstate 336 24 0 22 2 1 1 2 0 8 0 pfrule 1360 239 0 194 5 1 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 872 0 458 33 7 26 29 0 8 0 art_table 32 873 0 458 4 0 4 4 0 8 0 art_node 16 194 0 116 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 0 1 0 1 1 0 8 0 semapl 112 696 0 686 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 6885 0 5449 91 0 91 91 0 8 0 ffsino 272 6885 0 5449 97 0 97 97 0 8 0 nchpl 144 12270 0 10630 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 43279 0 43278 4 3 1 2 0 8 0 percpumem 16 83 0 45 1 0 1 1 0 8 0 vcpupl 2048 12 0 0 2 0 2 2 0 8 0 vmpool 560 20 0 8 1 0 1 1 0 8 0 pfiaddrpl 120 27 0 15 1 0 1 1 0 8 0 kstatmem 264 112 0 90 2 0 2 2 0 8 0 scxspl 216 38048 0 38048 13 12 1 8 0 8 1 plimitpl 152 356 0 341 1 0 1 1 0 8 0 sigapl 424 4485 0 4437 10 4 6 8 0 8 0 futexpl 64 36425 0 36425 1 0 1 1 0 8 1 knotepl 120 559 0 0 16 1 15 16 0 8 0 kqueuepl 216 4122 0 4114 48 45 3 10 0 8 2 pipepl 336 512 0 487 16 13 3 8 0 8 0 fdescpl 496 4445 0 4423 5 1 4 5 0 8 0 filepl 152 29845 0 29627 52 41 11 20 0 8 0 lockfpl 104 1214 0 1212 4 3 1 2 0 8 0 lockfspl 48 269 0 267 1 0 1 1 0 8 0 sessionpl 144 28 0 11 1 0 1 1 0 8 0 pgrppl 48 28 0 11 1 0 1 1 0 8 0 ucredpl 96 3269 0 3256 1 0 1 1 0 8 0 zombiepl 144 4445 0 4437 2 1 1 1 0 8 0 processpl 1064 4485 0 4437 5 1 4 5 0 8 0 procpl 672 11568 0 11496 15 9 6 8 0 8 0 srpgc 96 8 0 8 2 2 0 1 0 8 0 sosppl 168 22 0 22 5 5 0 1 0 8 0 sockpl 480 6291 0 6266 162 155 7 32 0 8 3 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 7 0 0 1 0 1 1 0 8 0 mcl8k 8192 16 0 0 2 0 2 2 0 8 0 mcl4k 4096 13 0 0 2 0 2 2 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 191 0 0 21 0 21 21 0 8 1 mtagpl 96 244 0 0 6 0 6 6 0 8 0 mbufpl 256 1063 0 0 61 0 61 61 0 8 0 bufpl 288 9563 0 3230 453 0 453 453 0 8 0 anonpl 24 816590 0 796272 209 62 147 148 0 186 1 amapchunkpl 152 72731 0 71710 55 14 41 41 0 158 0 amappl16 200 10366 0 9740 62 28 34 44 0 8 0 amappl15 192 969 0 966 1 0 1 1 0 8 0 amappl14 184 538 0 532 1 0 1 1 0 8 0 amappl13 176 1063 0 1059 1 0 1 1 0 8 0 amappl12 168 109 0 108 2 1 1 1 0 8 0 amappl11 160 600 0 580 1 0 1 1 0 8 0 amappl10 152 457 0 450 1 0 1 1 0 8 0 amappl9 144 546 0 538 1 0 1 1 0 8 0 amappl8 136 1259 0 1183 3 0 3 3 0 8 0 amappl7 128 655 0 639 1 0 1 1 0 8 0 amappl6 120 293 0 273 2 1 1 2 0 8 0 amappl5 112 3171 0 3153 1 0 1 1 0 8 0 amappl4 104 1984 0 1955 2 1 1 2 0 8 0 amappl3 96 13619 0 13555 2 0 2 2 0 8 0 amappl2 88 5816 0 5742 3 1 2 3 0 8 0 amappl1 80 107158 0 106438 20 5 15 20 0 8 0 amappl 88 24633 0 24425 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 72 131 0 1 3 0 3 3 0 8 0 uaddrrnd 24 4465 0 4424 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4465 0 4424 1 0 1 1 0 8 0 vmmpekpl 168 35407 0 35358 3 0 3 3 0 8 0 vmmpepl 168 427033 0 424163 182 46 136 143 0 357 11 vmsppl 368 4464 0 4423 5 1 4 4 0 8 0 rwobjpl 56 109256 0 101431 111 0 111 111 0 8 0 pdppl 4096 8937 0 8858 234 154 80 83 0 8 1 pvpl 32 1691909 0 1670541 390 133 257 261 0 265 39 pmappl 248 4464 0 4423 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1128 0 270 26 0 26 26 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259e2bb) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82612784,ffffffff8258b302,4f6,ffffffff825c1a6a) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pageunwire(fffffd80078e9c40) at uvm_pageunwire+0x16b sys/uvm/uvm_page.c:1270 uvm_fault_unwire_locked(fffffd806aa50d00,c29654c5000,c29654c6000) at uvm_fault_unwire_locked+0x226 sys/uvm/uvm_fault.c:1672 uvm_unmap_kill_entry_withlock(fffffd806aa50d00,fffffd8067baf000,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:2136 uvm_map_teardown(fffffd806aa50d00) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd806aa50d00) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771 uvmspace_free(fffffd806aa50d00) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3684 reaper(ffff800021143a48) at reaper+0x19a sys/kern/kern_exit.c:454 end trace frame: 0x0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5