panic: kernel diagnostic assertion "uvm_page_owner_locked_p(pg)" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 1275 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 351648 8673 0 0x2 0 1 syz-fuzzer *117819 7627 0 0x14000 0x200 0K reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825759f2) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e76d9,ffffffff82561314,4fb,ffffffff825974a6) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pageunwire(fffffd8006a087c0) at uvm_pageunwire+0x19b sys/uvm/uvm_page.c:1275 uvm_fault_unwire_locked(fffffd80744268d0,47ba013d000,47ba033c000) at uvm_fault_unwire_locked+0x24b sys/uvm/uvm_fault.c:1668 uvm_unmap_kill_entry_withlock(fffffd80744268d0,fffffd806c53cd80,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:2136 uvm_map_teardown(fffffd80744268d0) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd80744268d0) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771 uvmspace_free(fffffd80744268d0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f8d20) 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 1275 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825759f2) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e76d9,ffffffff82561314,4fb,ffffffff825974a6) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pageunwire(fffffd8006a087c0) at uvm_pageunwire+0x19b sys/uvm/uvm_page.c:1275 uvm_fault_unwire_locked(fffffd80744268d0,47ba013d000,47ba033c000) at uvm_fault_unwire_locked+0x24b sys/uvm/uvm_fault.c:1668 uvm_unmap_kill_entry_withlock(fffffd80744268d0,fffffd806c53cd80,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:2136 uvm_map_teardown(fffffd80744268d0) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd80744268d0) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771 uvmspace_free(fffffd80744268d0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f8d20) at reaper+0x18b sys/kern/kern_exit.c:462 end trace frame: 0x0, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800021135c00 rbx 0xffffffff828f8bff cpu_info_full_primary+0x2bff rdx 0 rcx 0 rax 0xffff8000210f8d20 r8 0x101010101010101 r9 0x8080808080808080 r10 0xff5f4aac6a8d90fb r11 0x383462b20f3db7ba r12 0xffffffff828f8a00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff8206f258 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021135bf0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (reaper) pid=117819 stat=onproc flags process=14000 proc=200 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000210f8a80,0xffff8000210f9510 process=0xffff8000ffffd0a0 user=0xffff800021130000, vmspace=0xffffffff82acdc10 estcpu=36, cpticks=24, pctcpu=19.85 user=0, sys=291, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 50896 378447 8673 0 2 0x2 syz-executor.3 76994 152134 8673 0 3 0x82 wait syz-executor.1 78950 399661 0 0 3 0x14200 bored sosplice 15503 217392 0 0 3 0x14280 nfsidl nfsio 14335 226129 0 0 3 0x14280 nfsidl nfsio 71580 227130 0 0 3 0x14280 nfsidl nfsio 80598 116101 0 0 3 0x14280 nfsidl nfsio 76860 306050 0 0 3 0x14280 nfsidl nfsio 171 388523 0 0 3 0x14280 nfsidl nfsio 16391 7842 0 0 3 0x14280 nfsidl nfsio 90355 247919 0 0 3 0x14280 nfsidl nfsio 54373 269913 0 0 3 0x14280 nfsidl nfsio 53391 62917 0 0 3 0x14280 nfsidl nfsio 80930 178175 0 0 3 0x14280 nfsidl nfsio 34215 83089 0 0 3 0x14280 nfsidl nfsio 30164 246670 0 0 3 0x14280 nfsidl nfsio 52991 431357 0 0 3 0x14280 nfsidl nfsio 63167 404901 0 0 3 0x14280 nfsidl nfsio 21301 505889 0 0 3 0x14280 nfsidl nfsio 3108 45768 0 0 3 0x14280 nfsidl nfsio 56881 454506 0 0 3 0x14280 nfsidl nfsio 23164 81084 0 0 3 0x14280 nfsidl nfsio 13161 438149 0 0 3 0x14280 nfsidl nfsio 25833 89572 1 0 3 0x100083 ttyin getty 44498 403538 8673 0 3 0x82 wait syz-executor.5 8673 351648 74204 0 7 0x2 syz-fuzzer 8673 54742 74204 0 2 0x4000482 syz-fuzzer 8673 32748 74204 0 3 0x4000082 thrsleep syz-fuzzer 8673 85145 74204 0 3 0x4000082 thrsleep syz-fuzzer 8673 68737 74204 0 2 0x4000002 syz-fuzzer 8673 236779 74204 0 3 0x4000082 thrsleep syz-fuzzer 8673 329728 74204 0 3 0x4000082 thrsleep syz-fuzzer 8673 175236 74204 0 3 0x4000082 thrsleep syz-fuzzer 8673 6875 74204 0 3 0x4000082 thrsleep syz-fuzzer 74204 386166 12922 0 3 0x10008a sigsusp ksh 12922 119242 53546 0 3 0x9a poll sshd 53546 204601 1 0 3 0x88 poll sshd 76985 256815 96890 74 2 0x100492 pflogd 96890 146960 1 0 3 0x80 netio pflogd 39447 18522 54344 73 2 0x100010 syslogd 54344 448403 1 0 3 0x100082 netio syslogd 64368 341242 1 0 3 0x100080 kqread resolvd 32414 124915 15283 77 3 0x100092 kqread dhcpleased 42523 326586 15283 77 3 0x100092 kqread dhcpleased 15283 67179 1 0 3 0x80 kqread dhcpleased 10145 235981 0 0 2 0x14200 smr 23881 431474 0 0 2 0x14200 zerothread 15979 9934 0 0 3 0x14200 aiodoned aiodoned 95065 62972 0 0 2 0x14600 update 32931 342543 0 0 3 0x14200 cleaner cleaner * 7627 117819 0 0 7 0x14200 reaper 95726 369484 0 0 3 0x14200 pgdaemon pagedaemon 37592 427816 0 0 3 0x14200 bored viomb 82554 16698 0 0 3 0x40014200 acpi0 acpi0 69370 236428 0 0 3 0x40014200 idle1 15100 355676 0 0 3 0x14200 bored softnet 56055 220827 0 0 2 0x14200 systqmp 68137 17474 0 0 2 0x14200 systq 74291 445829 0 0 2 0x40014200 softclock 40826 235637 0 0 3 0x40014200 idle0 1 105657 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 (0xffffffff829ab5f8) #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:1667 #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 50896 (syz-executor.3) thread 0xffff80002120a2a8 (378447) exclusive rrwlock inode r = 0 (0xfffffd806e2b04e8) #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 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:3100 #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 (0xfffffd806732f1b8) #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 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:3085 #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 7627 (reaper) thread 0xffff8000210f8d20 (117819) exclusive rwlock uobjlk r = 0 (0xfffffd8062e904e8) #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:1655 #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 (0xffffffff82acc0c0) #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 (0xffffffff829ab5f8) #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:1667 #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 10188 6490K 7210K 78643K 21114 0 pcb 13 22K 28K 78643K 3878 0 rtable 127 13K 17K 78643K 1388 0 ifaddr 56 13K 19K 78643K 423 0 sysctl 2 0K 0K 78643K 2 0 counters 46 34K 35K 78643K 136 0 ioctlops 0 0K 4K 78643K 2326 0 iov 0 0K 16K 78643K 468 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1436 90K 90K 78643K 4470 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 32 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 446 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 6 14K 89K 78643K 5470 0 sigio 0 0K 0K 78643K 84 0 proc 71 87K 124K 78643K 1275 0 subproc 39 2K 6K 78643K 325 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 574 0 in_multi 44 2K 7K 78643K 476 0 ether_multi 1 0K 0K 78643K 71 0 mrt 1 0K 0K 78643K 50 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 163 731K 731K 78643K 163 0 exec 0 0K 2K 78643K 1335 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 394 303K 322K 78643K 71403 0 UVM aobj 54 6K 6K 78643K 55 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 400 0 NDP 7 0K 2K 78643K 106 0 temp 106 4706K 8781K 78643K 165622 0 kqueue 10 14K 18K 78643K 312 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 120 440 0 437 5 4 1 2 0 8 0 rtentry 112 389 0 341 4 0 4 4 0 8 1 unpcb 136 4105 0 4090 43 42 1 9 0 8 0 syncache 296 24 0 24 6 6 0 1 0 8 0 tcpqe 32 66 0 66 4 4 0 1 0 8 0 tcpcb 736 2973 0 2969 64 59 5 14 0 8 4 arp 120 67 0 59 1 0 1 1 0 8 0 inpcb 304 10184 0 10177 68 66 2 16 0 8 1 rttmr 72 16 0 16 4 4 0 1 0 8 0 nd6 48 87 0 78 1 0 1 1 0 8 0 pkpcb 40 11 0 11 3 3 0 1 0 8 0 kcovpl 48 25 0 22 1 0 1 1 0 8 0 ppxss 1248 14 0 14 4 4 0 1 0 8 0 pfstscr 40 5 0 5 1 1 0 1 0 8 0 pffrag 232 14 0 13 3 2 1 1 0 482 0 pffrnode 88 14 0 13 3 2 1 1 0 8 0 pffrent 40 43 0 42 3 2 1 1 0 8 0 pfosfp 40 1432 0 1008 5 0 5 5 0 8 0 pfosfpen 112 1432 0 717 21 0 21 21 0 8 0 pfrktable 1344 107 0 104 1 0 1 1 0 8 0 pftag 88 7 0 4 1 0 1 1 0 8 0 pfstitem 24 34 0 32 1 0 1 1 0 8 0 pfstkey 112 44 0 42 1 0 1 1 0 8 0 pfstate 320 39 0 37 3 2 1 3 0 8 0 pfrule 1360 111 0 97 4 2 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1738 0 1508 37 8 29 32 0 8 7 art_table 32 1739 0 1508 5 1 4 5 0 8 0 art_node 16 388 0 348 1 0 1 1 0 8 0 sysvmsgpl 40 32 0 21 2 1 1 1 0 8 0 semapl 112 444 0 434 1 0 1 1 0 8 0 shmpl 112 52 0 1 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8249 0 6789 93 0 93 93 0 8 0 ffsino 272 8249 0 6789 99 0 99 99 0 8 0 nchpl 144 15473 0 13867 63 0 63 63 0 8 1 uvmvnodes 80 5994 0 0 123 0 123 123 0 8 0 vnodes 224 5994 0 0 353 0 353 353 0 8 0 namei 1024 58020 0 58019 4 3 1 2 0 8 0 percpumem 16 80 0 45 1 0 1 1 0 8 0 vcpupl 2048 112 0 0 14 0 14 14 0 8 0 vmpool 560 125 0 13 8 0 8 8 0 8 0 pfiaddrpl 120 30 0 28 2 1 1 1 0 8 0 scxspl 216 50541 0 50541 17 16 1 5 0 8 1 plimitpl 152 619 0 605 1 0 1 1 0 8 0 sigapl 424 5762 0 5708 8 0 8 8 0 8 0 futexpl 64 53082 0 53082 2 1 1 1 0 8 1 knotepl 112 202 0 0 5 0 5 5 0 8 0 kqueuepl 216 1170 0 1164 25 24 1 8 0 8 0 pipepl 336 1108 0 1095 26 23 3 8 0 8 0 fdescpl 496 5727 0 5708 5 1 4 5 0 8 0 filepl 152 43533 0 43395 68 56 12 21 0 8 2 lockfpl 104 1911 0 1909 5 4 1 2 0 8 0 lockfspl 48 470 0 468 1 0 1 1 0 8 0 sessionpl 144 42 0 27 1 0 1 1 0 8 0 pgrppl 48 287 0 272 1 0 1 1 0 8 0 ucredpl 96 3892 0 3880 1 0 1 1 0 8 0 zombiepl 144 5709 0 5703 1 0 1 1 0 8 0 processpl 1064 5762 0 5703 5 0 5 5 0 8 0 procpl 672 16413 0 16346 16 8 8 10 0 8 0 srpgc 96 13 0 13 4 4 0 1 0 8 0 sosppl 168 34 0 34 7 7 0 1 0 8 0 sockpl 480 14774 0 14749 265 257 8 37 0 8 4 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 23 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 246 0 0 20 1 19 20 0 8 0 mtagpl 96 738 0 0 17 0 17 17 0 8 0 mbufpl 256 1118 0 0 70 0 70 70 0 8 0 bufpl 288 14161 0 7825 453 0 453 453 0 8 0 anonpl 24 1647302 0 1625728 241 93 148 150 0 186 1 amapchunkpl 152 177901 0 176809 70 24 46 46 0 158 0 amappl16 200 15756 0 15128 90 55 35 46 0 8 0 amappl15 192 363 0 355 1 0 1 1 0 8 0 amappl14 184 838 0 835 1 0 1 1 0 8 0 amappl13 176 1277 0 1276 1 0 1 1 0 8 0 amappl12 168 432 0 428 2 1 1 1 0 8 0 amappl11 160 385 0 371 1 0 1 1 0 8 0 amappl10 152 1023 0 1017 1 0 1 1 0 8 0 amappl9 144 1790 0 1784 1 0 1 1 0 8 0 amappl8 136 1036 0 949 4 0 4 4 0 8 0 amappl7 128 203 0 190 1 0 1 1 0 8 0 amappl6 120 1577 0 1546 2 0 2 2 0 8 0 amappl5 112 6071 0 6053 1 0 1 1 0 8 0 amappl4 104 1645 0 1612 2 1 1 2 0 8 0 amappl3 96 1161 0 1144 1 0 1 1 0 8 0 amappl2 88 2271 0 2214 3 1 2 3 0 8 0 amappl1 80 107385 0 106831 19 5 14 19 0 8 0 amappl 88 70534 0 70270 8 0 8 8 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 54 0 1 1 0 1 1 0 8 0 uaddrrnd 24 5852 0 5717 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5852 0 5717 1 0 1 1 0 8 0 vmmpekpl 168 46830 0 46775 4 0 4 4 0 8 0 vmmpepl 168 533714 0 531026 233 77 156 156 0 357 19 vmsppl 368 5851 0 5716 14 1 13 13 0 8 0 rwobjpl 56 134984 0 127268 114 4 110 112 0 8 0 pdppl 4096 11711 0 11544 406 225 181 182 0 8 14 pvpl 32 2822240 0 2800154 416 157 259 263 0 265 20 pmappl 248 5851 0 5716 10 1 9 9 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1323 0 324 29 0 29 29 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(ffffffff825759f2) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e76d9,ffffffff82561314,4fb,ffffffff825974a6) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pageunwire(fffffd8006a087c0) at uvm_pageunwire+0x19b sys/uvm/uvm_page.c:1275 uvm_fault_unwire_locked(fffffd80744268d0,47ba013d000,47ba033c000) at uvm_fault_unwire_locked+0x24b sys/uvm/uvm_fault.c:1668 uvm_unmap_kill_entry_withlock(fffffd80744268d0,fffffd806c53cd80,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:2136 uvm_map_teardown(fffffd80744268d0) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd80744268d0) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771 uvmspace_free(fffffd80744268d0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f8d20) 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 __mp_lock(ffffffff82acbeb8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82acbeb8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff8000211ced50) at syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff8000211ced50) at syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc6d00, count: 9 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 __mp_lock(ffffffff82acbeb8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82acbeb8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff8000211ced50) at syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff8000211ced50) at syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc6d00, count: -6