panic: kernel diagnostic assertion "uvm_page_owner_locked_p(pg)" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 1268 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 86284 7950 0 0x14000 0x200 0K reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82574d37) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e80fc,ffffffff825621d5,4f4,ffffffff825981b5) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pageunwire(fffffd80071cb640) at uvm_pageunwire+0x19b sys/uvm/uvm_page.c:1268 uvm_fault_unwire_locked(fffffd805f206170,57d25299000,57d2529a000) at uvm_fault_unwire_locked+0x24b sys/uvm/uvm_fault.c:1654 uvm_unmap_kill_entry_withlock(fffffd805f206170,fffffd8064493e40,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:2136 uvm_map_teardown(fffffd805f206170) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd805f206170) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771 uvmspace_free(fffffd805f206170) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9500) at reaper+0x18b sys/kern/kern_exit.c:462 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 1268 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82574d37) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e80fc,ffffffff825621d5,4f4,ffffffff825981b5) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pageunwire(fffffd80071cb640) at uvm_pageunwire+0x19b sys/uvm/uvm_page.c:1268 uvm_fault_unwire_locked(fffffd805f206170,57d25299000,57d2529a000) at uvm_fault_unwire_locked+0x24b sys/uvm/uvm_fault.c:1654 uvm_unmap_kill_entry_withlock(fffffd805f206170,fffffd8064493e40,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:2136 uvm_map_teardown(fffffd805f206170) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd805f206170) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771 uvmspace_free(fffffd805f206170) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9500) at reaper+0x18b sys/kern/kern_exit.c:462 end trace frame: 0x0, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800021135270 rbx 0xffffffff82936bff cpu_info_full_primary+0x2bff rdx 0 rcx 0 rax 0xffff8000210f9500 r8 0x101010101010101 r9 0x8080808080808080 r10 0x8d541a3f9835507d r11 0x5c2f0387ef953976 r12 0xffffffff82936a00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff81154f68 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021135260 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (reaper) pid=86284 stat=onproc flags process=14000 proc=200 pri=83, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff8000210f9260,0xffff8000210f97b0 process=0xffff8000ffffc850 user=0xffff800021130000, vmspace=0xffffffff82b42340 estcpu=32, cpticks=2, pctcpu=11.43 user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 58940 104669 93852 0 3 0x82 wait syz-executor.6 5620 144781 93852 0 3 0x82 wait syz-executor.7 61318 58970 93852 0 3 0x82 wait syz-executor.3 67985 437367 93852 0 3 0x82 wait syz-executor.5 68503 282684 1 0 3 0x100083 ttyin getty 45741 390771 93852 0 3 0x82 wait syz-executor.2 68547 353849 93852 0 3 0x82 wait syz-executor.4 13134 218260 93852 0 3 0x82 wait syz-executor.1 56960 317819 0 0 3 0x14280 nfsidl nfsio 55042 279182 0 0 3 0x14280 nfsidl nfsio 36589 470992 0 0 3 0x14280 nfsidl nfsio 65542 316882 0 0 3 0x14280 nfsidl nfsio 58516 199780 0 0 3 0x14280 nfsidl nfsio 34411 189424 0 0 3 0x14280 nfsidl nfsio 69530 419481 0 0 3 0x14280 nfsidl nfsio 91797 169123 0 0 3 0x14280 nfsidl nfsio 97118 185301 0 0 3 0x14280 nfsidl nfsio 96762 508820 0 0 3 0x14280 nfsidl nfsio 18698 367963 0 0 3 0x14280 nfsidl nfsio 19461 80626 0 0 3 0x14280 nfsidl nfsio 28937 163882 0 0 3 0x14280 nfsidl nfsio 18649 178458 0 0 3 0x14280 nfsidl nfsio 88261 427338 0 0 3 0x14280 nfsidl nfsio 64832 82852 0 0 3 0x14280 nfsidl nfsio 94353 270805 0 0 3 0x14280 nfsidl nfsio 91483 328407 0 0 3 0x14280 nfsidl nfsio 4590 345125 0 0 3 0x14280 nfsidl nfsio 65696 428402 0 0 3 0x14280 nfsidl nfsio 30040 119444 0 0 3 0x14200 bored sosplice 93852 71026 15947 0 3 0x82 thrsleep syz-fuzzer 93852 279031 15947 0 3 0x4000082 nanoslp syz-fuzzer 93852 418001 15947 0 3 0x4000082 kqread syz-fuzzer 93852 113847 15947 0 3 0x4000082 thrsleep syz-fuzzer 93852 505195 15947 0 3 0x4000082 thrsleep syz-fuzzer 93852 132634 15947 0 3 0x4000082 thrsleep syz-fuzzer 93852 41536 15947 0 3 0x4000082 thrsleep syz-fuzzer 93852 41779 15947 0 3 0x4000082 thrsleep syz-fuzzer 93852 502239 15947 0 3 0x4000082 thrsleep syz-fuzzer 15947 431657 49462 0 3 0x10008a sigsusp ksh 49462 221864 82102 0 3 0x9a poll sshd 82102 414870 1 0 3 0x88 poll sshd 7946 18315 60473 74 3 0x100092 bpf pflogd 60473 124403 1 0 3 0x80 netio pflogd 55515 404037 28302 73 2 0x100010 syslogd 28302 115229 1 0 3 0x100082 netio syslogd 34951 36610 1 0 3 0x100080 kqread resolvd 17162 435971 19778 77 3 0x100092 kqread dhcpleased 50432 266481 19778 77 3 0x100092 kqread dhcpleased 19778 341096 1 0 3 0x80 kqread dhcpleased 96778 302477 0 0 3 0x14200 bored smr 93003 368898 0 0 2 0x14200 zerothread 2604 72022 0 0 3 0x14200 aiodoned aiodoned 25083 154621 0 0 3 0x14200 syncer update 58364 320909 0 0 3 0x14200 cleaner cleaner * 7950 86284 0 0 7 0x14200 reaper 1435 220340 0 0 3 0x14200 pgdaemon pagedaemon 70559 402146 0 0 3 0x14200 bored viomb 50126 78077 0 0 3 0x40014200 acpi0 acpi0 49425 416918 0 0 7 0x40014200 idle1 83041 337779 0 0 3 0x14200 bored softnet 35810 485471 0 0 3 0x14200 bored systqmp 48190 148314 0 0 3 0x14200 bored systq 62457 169449 0 0 3 0x40014200 bored softclock 7602 329723 0 0 3 0x40014200 idle0 1 461686 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff829e0fa0) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 uvm_fault_unwire_locked+0x243 sys/uvm/uvm_fault.c:1653 #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:3685 #7 reaper+0x18b sys/kern/kern_exit.c:462 #8 proc_trampoline+0x1c Process 55515 (syslogd) thread 0xffff8000ffff6fd0 (404037) exclusive rrwlock inode r = 0 (0xfffffd806e72d700) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #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:2923 #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 7950 (reaper) thread 0xffff8000210f9500 (86284) exclusive rwlock uobjlk r = 0 (0xfffffd807b65f7b8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 uvm_fault_unwire_locked+0x1e8 sys/uvm/uvm_fault.c:1641 #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:3685 #6 reaper+0x18b sys/kern/kern_exit.c:462 #7 proc_trampoline+0x1c exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829ff398) #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:3685 #4 reaper+0x18b sys/kern/kern_exit.c:462 #5 proc_trampoline+0x1c exclusive mutex &uvm.pageqlock r = 0 (0xffffffff829e0fa0) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 uvm_fault_unwire_locked+0x243 sys/uvm/uvm_fault.c:1653 #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:3685 #7 reaper+0x18b sys/kern/kern_exit.c:462 #8 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10225 6536K 7400K 78643K 73449 0 pcb 13 28K 30K 78643K 7022 0 rtable 355 48K 49K 78643K 13591 0 ifaddr 117 32K 37K 78643K 11382 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 36K 78643K 870 0 ioctlops 0 0K 10K 78643K 57695 0 iov 0 0K 32K 78643K 5170 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1464 91K 92K 78643K 25074 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 13K 78643K 512 0 VM map 2 1K 1K 78643K 2 0 sem 19 29K 57K 78643K 1163 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 85K 78643K 76957 0 sigio 0 0K 0K 78643K 521 0 proc 72 87K 124K 78643K 5411 0 subproc 91 11K 13K 78643K 1590 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2538 0 in_multi 84 5K 7K 78643K 3455 0 ether_multi 1 0K 0K 78643K 432 0 mrt 1 0K 0K 78643K 141 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 265 1182K 1182K 78643K 265 0 exec 0 0K 2K 78643K 10528 0 pfkey data 0 0K 1K 78643K 22 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 828 1368K 1382K 78643K 966764 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 28013 0 NDP 13 0K 2K 78643K 913 0 temp 212 4853K 8826K 78643K 410459 0 kqueue 13 20K 29K 78643K 5928 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 2358 0 2355 32 31 1 3 0 8 0 rtentry 112 2153 0 2061 7 3 4 4 0 8 0 unpcb 136 36137 0 36122 366 365 1 10 0 8 0 syncache 296 98 0 98 32 32 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 53 108 53 7 7 0 1 0 8 0 tcpcb 736 83504 0 83496 1244 1241 3 32 0 8 1 arp 120 277 0 261 1 0 1 1 0 8 0 inpcb 304 121035 0 121024 722 719 3 21 0 8 1 rttmr 72 121 0 121 16 16 0 1 0 8 0 ip6q 72 8 0 8 3 3 0 1 0 8 0 ip6af 40 24 0 24 3 3 0 1 0 8 0 nd6 48 668 0 645 1 0 1 1 0 8 0 pkpcb 40 472 0 472 30 30 0 1 0 8 0 kcovpl 48 121 0 114 1 0 1 1 0 8 0 ppxss 1248 58 0 58 18 18 0 1 0 8 0 pfstscr 40 39 0 39 9 9 0 1 0 8 0 pffrag 232 236 0 235 25 24 1 1 0 482 0 pffrnode 88 236 0 235 25 24 1 1 0 8 0 pffrent 40 6274 0 6273 27 26 1 1 0 8 0 pfosfp 40 2657 0 2206 5 0 5 5 0 8 0 pfosfpen 112 2657 0 1834 24 0 24 24 0 8 0 pfrke_plain 168 172 0 172 4 4 0 1 0 8 0 pfrktable 1344 3378 0 3318 24 19 5 6 0 8 0 pftag 88 161 0 146 2 1 1 1 0 8 0 pfqueue 264 3089 0 1486 107 0 107 107 0 8 0 pfstitem 24 47 0 45 1 0 1 1 0 8 0 pfstkey 112 207 0 205 1 0 1 1 0 8 0 pfstate 320 126 0 124 2 1 1 2 0 8 0 pfsrctr 152 6 0 6 2 2 0 1 0 8 0 pfrule 1360 18308 0 15279 257 4 253 253 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 13969 0 13577 71 42 29 36 0 8 0 art_table 32 13970 0 13577 9 5 4 5 0 8 0 art_node 16 2145 0 2064 1 0 1 1 0 8 0 sysvmsgpl 40 44 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 1153 0 1136 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 94931 0 93357 99 0 99 99 0 8 0 ffsino 272 94931 0 93357 107 1 106 106 0 8 0 nchpl 144 197537 0 195922 63 0 63 63 0 8 0 rtmask 32 62 0 62 3 3 0 1 0 8 0 uvmvnodes 80 8708 0 0 178 0 178 178 0 8 0 vnodes 224 8708 0 0 513 0 513 513 0 8 0 namei 1024 620497 0 620497 12 11 1 2 0 8 1 percpumem 16 447 0 407 1 0 1 1 0 8 0 vcpupl 2048 367 0 4 46 0 46 46 0 8 0 vmpool 560 516 0 153 28 2 26 26 0 8 0 pfiaddrpl 120 5459 0 5013 17 3 14 14 0 8 0 scsiplug 72 46 0 46 16 16 0 1 0 8 0 scxspl 216 568187 0 568187 68 67 1 8 0 8 1 plimitpl 152 4536 0 4521 1 0 1 1 0 8 0 sigapl 424 77068 0 77011 8 0 8 8 0 8 0 futexpl 64 661428 0 661428 12 11 1 1 0 8 1 knotepl 112 337 0 0 5 1 4 4 0 8 0 kqueuepl 216 14251 0 14225 219 217 2 9 0 8 0 pipepl 336 10958 0 10933 278 275 3 13 0 8 0 fdescpl 496 77027 0 77005 5 0 5 5 0 8 0 filepl 152 493151 0 492933 541 530 11 24 0 8 0 lockfpl 104 14092 0 14090 28 27 1 2 0 8 0 lockfspl 48 4075 0 4073 1 0 1 1 0 8 0 sessionpl 144 140 0 123 1 0 1 1 0 8 0 pgrppl 48 231 0 214 1 0 1 1 0 8 0 ucredpl 96 37007 0 36994 1 0 1 1 0 8 0 zombiepl 144 77011 0 77003 6 5 1 1 0 8 0 processpl 1064 77068 0 77003 5 0 5 5 0 8 0 procpl 672 211523 0 211442 68 60 8 9 0 8 0 srpgc 96 96 0 96 24 24 0 1 0 8 0 sosppl 168 301 0 301 54 53 1 1 0 8 1 sockpl 480 160047 0 160018 2438 2431 7 41 0 8 2 mcl64k 65536 139 0 0 7 4 3 3 0 8 0 mcl16k 16384 81 0 0 10 7 3 3 0 8 0 mcl12k 12288 65 0 0 2 0 2 2 0 8 0 mcl9k 9216 33 0 0 3 1 2 2 0 8 0 mcl8k 8192 65 0 0 3 0 3 3 0 8 0 mcl4k 4096 89 0 0 5 2 3 3 0 8 0 mcl2k2 2112 22 0 0 2 0 2 2 0 8 0 mcl2k 2048 1040 0 0 30 9 21 22 0 8 0 mtagpl 96 2286 0 0 26 16 10 17 0 8 0 mbufpl 256 8567 0 0 397 0 397 397 0 8 0 bufpl 288 105524 0 98658 624 25 599 623 0 8 0 anonpl 24 21228577 0 21197242 741 529 212 217 0 186 2 amapchunkpl 152 2352196 0 2350935 354 303 51 57 0 158 0 amappl16 200 185883 0 184715 337 268 69 76 0 8 1 amappl15 192 19344 0 19340 1 0 1 1 0 8 0 amappl14 184 17049 0 17037 1 0 1 1 0 8 0 amappl13 176 7704 0 7699 1 0 1 1 0 8 0 amappl12 168 10205 0 10193 1 0 1 1 0 8 0 amappl11 160 16562 0 16547 2 1 1 2 0 8 0 amappl10 152 4049 0 4040 1 0 1 1 0 8 0 amappl9 144 7739 0 7734 1 0 1 1 0 8 0 amappl8 136 10338 0 10025 13 2 11 11 0 8 0 amappl7 128 6559 0 6540 1 0 1 1 0 8 0 amappl6 120 7918 0 7883 3 1 2 2 0 8 0 amappl5 112 52990 0 52958 1 0 1 1 0 8 0 amappl4 104 42893 0 42852 2 0 2 2 0 8 0 amappl3 96 18974 0 18950 1 0 1 1 0 8 0 amappl2 88 13880 0 13819 3 1 2 3 0 8 0 amappl1 80 1377806 0 1377206 36 22 14 19 0 8 0 amappl 88 963423 0 963017 12 2 10 10 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 77543 0 77151 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 77543 0 77151 3 0 3 3 0 8 0 vmmpekpl 168 514225 0 514123 6 0 6 6 0 8 0 vmmpepl 168 6874519 0 6868251 1030 738 292 306 0 357 4 vmsppl 368 77542 0 77150 36 0 36 36 0 8 0 rwobjpl 56 1624126 0 1612715 233 71 162 165 0 8 0 pdppl 4096 155093 0 154663 1664 1232 432 433 0 8 2 pvpl 32 36323174 0 36292703 1420 1136 284 343 0 265 9 pmappl 248 77542 0 77150 26 1 25 25 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 4897 0 2855 60 0 60 60 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:440 panic(ffffffff82574d37) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e80fc,ffffffff825621d5,4f4,ffffffff825981b5) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pageunwire(fffffd80071cb640) at uvm_pageunwire+0x19b sys/uvm/uvm_page.c:1268 uvm_fault_unwire_locked(fffffd805f206170,57d25299000,57d2529a000) at uvm_fault_unwire_locked+0x24b sys/uvm/uvm_fault.c:1654 uvm_unmap_kill_entry_withlock(fffffd805f206170,fffffd8064493e40,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:2136 uvm_map_teardown(fffffd805f206170) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd805f206170) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771 uvmspace_free(fffffd805f206170) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9500) at reaper+0x18b sys/kern/kern_exit.c:462 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