witness: exclusive lock of (rwlock) vmmaplk while share locked panic: share->excl Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *123110 86902 32767 0x10 0x4000000 0K syz-executor.7 94593 77162 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8257690f) at panic+0x177 sys/kern/subr_prf.c:202 witness_checkorder(fffffd806459bbb0,9,0) at witness_checkorder+0x11bd witness_debugger sys/kern/subr_witness.c:2505 [inline] witness_checkorder(fffffd806459bbb0,9,0) at witness_checkorder+0x11bd sys/kern/subr_witness.c:772 rw_enter(fffffd806459bba0,21) at rw_enter+0xd1 sys/kern/kern_rwlock.c:250 vm_map_lock_ln(fffffd806459bb98,42a,ffff80002c94e000) at vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5466 uvm_map_extract(fffffd806459bb98,7f7ffffd6000,1000,ffff80002e382fa0,0) at uvm_map_extract+0x173 sys/uvm/uvm_map.c:4530 uvm_io(fffffd806459bb98,ffff80002e383038,0) at uvm_io+0x127 sys/uvm/uvm_io.c:100 sysctl_proc_args(ffff80002e383488,2,20000080,ffff80002e3834b8,ffff8000260aa550) at sysctl_proc_args+0x24b sys/kern/kern_sysctl.c:1790 kern_sysctl(ffff80002e383484,3,20000080,ffff80002e3834b8,0,0,7b086210250c21f8) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449 sys_sysctl(ffff8000260aa550,ffff80002e383528,ffff80002e383580) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249 syscall(ffff80002e3835f0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3835f0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c4d368c0e0, count: 3 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: share->excl ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8257690f) at panic+0x177 sys/kern/subr_prf.c:202 witness_checkorder(fffffd806459bbb0,9,0) at witness_checkorder+0x11bd witness_debugger sys/kern/subr_witness.c:2505 [inline] witness_checkorder(fffffd806459bbb0,9,0) at witness_checkorder+0x11bd sys/kern/subr_witness.c:772 rw_enter(fffffd806459bba0,21) at rw_enter+0xd1 sys/kern/kern_rwlock.c:250 vm_map_lock_ln(fffffd806459bb98,42a,ffff80002c94e000) at vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5466 uvm_map_extract(fffffd806459bb98,7f7ffffd6000,1000,ffff80002e382fa0,0) at uvm_map_extract+0x173 sys/uvm/uvm_map.c:4530 uvm_io(fffffd806459bb98,ffff80002e383038,0) at uvm_io+0x127 sys/uvm/uvm_io.c:100 sysctl_proc_args(ffff80002e383488,2,20000080,ffff80002e3834b8,ffff8000260aa550) at sysctl_proc_args+0x24b sys/kern/kern_sysctl.c:1790 kern_sysctl(ffff80002e383484,3,20000080,ffff80002e3834b8,0,0,7b086210250c21f8) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449 sys_sysctl(ffff8000260aa550,ffff80002e383528,ffff80002e383580) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249 syscall(ffff80002e3835f0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3835f0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c4d368c0e0, count: -12 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e382c00 rbx 0xffffffff829bbbff cpu_info_full_primary+0x2bff rdx 0xffff800000bdff80 rcx 0 rax 0xffff8000260aa550 r8 0x101010101010101 r9 0x8080808080808080 r10 0x631de11d136a6fa3 r11 0x548a5ead7f2915d5 r12 0xffffffff829bba00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff8138d658 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e382bf0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.7) pid=123110 stat=onproc flags process=10 proc=4000000 pri=32, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff8000260aafd0,0xffff8000260ab520 process=0xffff800029544870 user=0xffff80002e37e000, vmspace=0xfffffd806459bb98 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 86902 287457 73603 32767 2 0x10 syz-executor.7 *86902 123110 73603 32767 7 0x4000010 syz-executor.7 70137 435297 84323 32767 2 0x10 syz-executor.5 70137 463405 84323 32767 3 0x4000090 fsleep syz-executor.5 70137 172378 84323 32767 3 0x4000090 fsleep syz-executor.5 85054 258162 85380 32767 2 0x10 syz-executor.4 85054 15129 85380 32767 3 0x4000090 fsleep syz-executor.4 65123 148872 25146 32767 2 0x10 syz-executor.6 65123 318852 25146 32767 3 0x4000090 netcon2 syz-executor.6 33409 201190 39553 32767 2 0x10 syz-executor.0 96207 28953 19257 32767 2 0x10 syz-executor.2 96207 374553 19257 32767 3 0x4000090 fsleep syz-executor.2 13690 248446 0 0 3 0x14200 bored sosplice 84323 150735 7801 32767 3 0x90 nanoslp syz-executor.5 73603 29099 63873 32767 3 0x90 nanoslp syz-executor.7 25146 147145 68149 32767 3 0x90 nanoslp syz-executor.6 63873 95930 19291 0 3 0x82 wait syz-executor.7 85380 394636 19178 32767 3 0x90 nanoslp syz-executor.4 68149 25190 19291 0 3 0x82 wait syz-executor.6 7801 356298 19291 0 3 0x82 wait syz-executor.5 3446 166287 50853 32767 3 0x90 nanoslp syz-executor.3 19178 113338 19291 0 3 0x82 wait syz-executor.4 50853 241896 19291 0 3 0x82 wait syz-executor.3 19257 366111 89557 32767 3 0x90 nanoslp syz-executor.2 39553 31119 11274 32767 3 0x90 nanoslp syz-executor.0 31783 316948 97837 32767 3 0x10 biowait syz-executor.1 89557 456229 19291 0 3 0x82 wait syz-executor.2 97837 455143 19291 0 3 0x82 wait syz-executor.1 11274 102578 19291 0 3 0x82 wait syz-executor.0 19291 123286 42251 0 3 0x82 thrsleep syz-fuzzer 19291 201464 42251 0 3 0x4000082 nanoslp syz-fuzzer 19291 246865 42251 0 3 0x4000082 thrsleep syz-fuzzer 19291 490663 42251 0 3 0x4000082 thrsleep syz-fuzzer 19291 164649 42251 0 3 0x4000082 thrsleep syz-fuzzer 19291 5554 42251 0 3 0x4000082 thrsleep syz-fuzzer 19291 218523 42251 0 3 0x4000082 thrsleep syz-fuzzer 19291 259358 42251 0 3 0x4000082 kqread syz-fuzzer 19291 431526 42251 0 3 0x4000082 thrsleep syz-fuzzer 42251 264630 61215 0 3 0x10008a sigsusp ksh 61215 391586 91071 0 3 0x9a kqread sshd 37288 97000 1 0 3 0x100083 ttyin getty 91071 252538 1 0 3 0x88 kqread sshd 47889 145905 49387 73 3 0x1100090 kqread syslogd 49387 445579 1 0 3 0x100082 netio syslogd 83281 142639 1 0 3 0x100080 kqread resolvd 12026 325829 860 77 3 0x100092 kqread dhcpleased 20776 488758 860 77 3 0x100092 kqread dhcpleased 860 244160 1 0 3 0x80 kqread dhcpleased 18022 42182 0 0 3 0x14200 bored smr 64619 121586 0 0 2 0x14200 zerothread 58069 169467 0 0 3 0x14200 aiodoned aiodoned 21974 21447 0 0 3 0x14200 syncer update 50296 111426 0 0 3 0x14200 cleaner cleaner 77162 94593 0 0 7 0x14200 reaper 11356 33939 0 0 3 0x14200 pgdaemon pagedaemon 18796 387421 0 0 3 0x14200 bored viomb 54367 255510 0 0 3 0x40014200 acpi0 acpi0 52865 441707 0 0 3 0x40014200 idle1 73369 299197 0 0 3 0x14200 bored softnet 6276 516742 0 0 3 0x14200 bored systqmp 53859 230203 0 0 3 0x14200 bored systq 11223 68918 0 0 3 0x40014200 bored softclock 55467 452326 0 0 3 0x40014200 idle0 1 172327 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 86902 (syz-executor.7) thread 0xffff8000260aa550 (123110) shared rwlock vmmaplk r = 0 (0xfffffd806459bbb0) #0 witness_lock+0x44d #1 uvm_vslock+0xc8 sys/uvm/uvm_glue.c:129 #2 sys_sysctl+0x2d8 sys/kern/kern_sysctl.c:240 #3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #4 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff82941f10) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 sys_sysctl+0x1b3 sys/kern/kern_sysctl.c:233 #3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #4 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829de988) #0 witness_lock+0x44d #1 syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] #1 syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 #2 Xsyscall+0x128 Process 31783 (syz-executor.1) thread 0xffff8000211fe540 (316948) exclusive rrwlock inode r = 0 (0xfffffd8068c822c8) #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: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 (0xfffffd806c7dbf78) #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: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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10177 6408K 6419K 78643K 11267 0 pcb 13 8K 8K 78643K 13 0 rtable 240 6K 7K 78643K 350 0 ifaddr 81 16K 16K 78643K 82 0 counters 56 35K 35K 78643K 56 0 ioctlops 0 0K 2K 78643K 33 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1270 79K 80K 78643K 1304 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 17K 78643K 36 0 VM map 2 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 24 89K 121K 78643K 385 0 proc 56 74K 99K 78643K 451 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 105 0 in_multi 99 6K 6K 78643K 113 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 79 360K 360K 78643K 79 0 exec 0 0K 2K 78643K 611 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 276 75K 76K 78643K 5860 0 UVM aobj 112 4K 4K 78643K 112 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 14 0 NDP 11 0K 2K 78643K 27 0 temp 86 4697K 4757K 78643K 4670 0 kqueue 12 18K 30K 78643K 83 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 33 0 30 1 0 1 1 0 8 0 rtentry 112 112 0 1 4 0 4 4 0 8 0 unpcb 136 174 0 157 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 4 0 4 1 0 1 1 0 8 1 tcpcb 736 33 0 28 2 0 2 2 0 8 1 arp 120 19 0 0 1 0 1 1 0 8 0 inpcb 304 289 0 280 2 0 2 2 0 8 1 nd6 48 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 453 0 0 29 0 29 29 0 8 0 art_table 32 454 0 0 4 0 4 4 0 8 0 art_node 16 111 0 10 1 0 1 1 0 8 0 shmpl 112 109 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1773 0 344 90 0 90 90 0 8 0 ffsino 272 1773 0 344 96 0 96 96 0 8 0 nchpl 144 2278 0 616 63 0 63 63 0 8 0 uvmvnodes 80 1886 0 0 39 0 39 39 0 8 0 vnodes 224 1886 0 0 111 0 111 111 0 8 0 namei 1024 7269 0 7268 2 0 2 2 0 8 1 percpumem 16 40 0 0 1 0 1 1 0 8 0 scxspl 216 6865 0 6864 2 1 1 2 0 8 0 plimitpl 152 50 0 28 2 0 2 2 0 8 1 sigapl 424 658 0 607 7 0 7 7 0 8 0 futexpl 64 2318 0 2314 1 0 1 1 0 8 0 knotepl 120 108 0 0 4 0 4 4 0 8 0 kqueuepl 216 142 0 134 1 0 1 1 0 8 0 pipepl 336 139 0 110 3 0 3 3 0 8 0 fdescpl 496 643 0 608 7 1 6 6 0 8 0 filepl 152 2490 0 2248 11 1 10 11 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 23 0 7 1 0 1 1 0 8 0 ucredpl 96 328 0 310 1 0 1 1 0 8 0 zombiepl 144 608 0 607 1 0 1 1 0 8 0 processpl 1064 658 0 607 5 1 4 4 0 8 0 procpl 672 959 0 894 7 0 7 7 0 8 1 sosppl 168 10 0 10 1 0 1 1 0 8 1 sockpl 480 496 0 467 5 0 5 5 0 8 1 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 84 0 0 10 0 10 10 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 355 0 0 22 0 22 22 0 8 0 bufpl 288 3832 0 139 264 0 264 264 0 8 0 anonpl 24 121613 0 114529 57 5 52 52 0 186 0 amapchunkpl 152 12887 0 12277 29 1 28 28 0 158 2 amappl16 200 879 0 749 10 1 9 9 0 8 2 amappl15 192 88 0 82 1 0 1 1 0 8 0 amappl14 184 31 0 29 1 0 1 1 0 8 0 amappl13 176 79 0 78 1 0 1 1 0 8 0 amappl12 168 24 0 21 1 0 1 1 0 8 0 amappl11 160 122 0 104 1 0 1 1 0 8 0 amappl10 152 137 0 125 1 0 1 1 0 8 0 amappl9 144 486 0 477 1 0 1 1 0 8 0 amappl8 136 543 0 507 2 0 2 2 0 8 0 amappl7 128 113 0 102 1 0 1 1 0 8 0 amappl6 120 291 0 267 2 1 1 2 0 8 0 amappl5 112 616 0 590 1 0 1 1 0 8 0 amappl4 104 890 0 858 2 0 2 2 0 8 0 amappl3 96 165 0 154 1 0 1 1 0 8 0 amappl2 88 504 0 457 3 0 3 3 0 8 1 amappl1 80 14341 0 13714 18 1 17 18 0 8 2 amappl 88 5446 0 5221 6 0 6 6 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 72 111 0 0 3 0 3 3 0 8 0 uaddrrnd 24 643 0 608 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 643 0 608 1 0 1 1 0 8 0 vmmpekpl 168 9059 0 9017 3 0 3 3 0 8 0 vmmpepl 168 59160 0 56845 111 0 111 111 0 357 3 vmsppl 368 642 0 607 4 0 4 4 0 8 0 rwobjpl 56 17031 0 14015 45 1 44 44 0 8 0 pdppl 4096 1293 0 1214 105 24 81 93 0 8 2 pvpl 32 352388 0 340229 261 2 259 261 0 265 149 pmappl 248 642 0 607 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 636 0 26 18 0 18 18 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(ffffffff8257690f) at panic+0x177 sys/kern/subr_prf.c:202 witness_checkorder(fffffd806459bbb0,9,0) at witness_checkorder+0x11bd witness_debugger sys/kern/subr_witness.c:2505 [inline] witness_checkorder(fffffd806459bbb0,9,0) at witness_checkorder+0x11bd sys/kern/subr_witness.c:772 rw_enter(fffffd806459bba0,21) at rw_enter+0xd1 sys/kern/kern_rwlock.c:250 vm_map_lock_ln(fffffd806459bb98,42a,ffff80002c94e000) at vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5466 uvm_map_extract(fffffd806459bb98,7f7ffffd6000,1000,ffff80002e382fa0,0) at uvm_map_extract+0x173 sys/uvm/uvm_map.c:4530 uvm_io(fffffd806459bb98,ffff80002e383038,0) at uvm_io+0x127 sys/uvm/uvm_io.c:100 sysctl_proc_args(ffff80002e383488,2,20000080,ffff80002e3834b8,ffff8000260aa550) at sysctl_proc_args+0x24b sys/kern/kern_sysctl.c:1790 kern_sysctl(ffff80002e383484,3,20000080,ffff80002e3834b8,0,0,7b086210250c21f8) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449 sys_sysctl(ffff8000260aa550,ffff80002e383528,ffff80002e383580) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249 syscall(ffff80002e3835f0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3835f0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c4d368c0e0, count: -12 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(ffffffff829de780) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829de780) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff8000211353d0,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615 uvm_map_teardown(fffffd806459b8b8) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 uvmspace_free(fffffd806459b8b8) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9a40) at reaper+0x18b sys/kern/kern_exit.c:457 end trace frame: 0x0, count: 7 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(ffffffff829de780) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829de780) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff8000211353d0,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615 uvm_map_teardown(fffffd806459b8b8) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 uvmspace_free(fffffd806459b8b8) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9a40) at reaper+0x18b sys/kern/kern_exit.c:457 end trace frame: 0x0, count: -8