panic: kernel diagnostic assertion "uvm_page_owner_locked_p(pg)" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 1269 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 140156 70109 73 0x1100010 0 1 syslogd *167158 49911 0 0x14000 0x200 0K reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a152f) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff8261b854,ffffffff82592a19,4f5,ffffffff825c8e55) at __assert+0x25 sys/kern/subr_prf.c:157 uvm_pageunwire(fffffd8006cd3660) at uvm_pageunwire+0x16b sys/uvm/uvm_page.c:1269 uvm_fault_unwire_locked(fffffd807dd4c180,623ace3f000,623ad03e000) at uvm_fault_unwire_locked+0x226 sys/uvm/uvm_fault.c:1682 uvm_unmap_kill_entry_withlock(fffffd807dd4c180,fffffd80646685e8,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:1888 uvm_map_teardown(fffffd807dd4c180) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd807dd4c180) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2523 uvmspace_free(fffffd807dd4c180) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436 reaper(ffff8000212337a8) at reaper+0x19a sys/kern/kern_exit.c:448 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 1269 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a152f) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff8261b854,ffffffff82592a19,4f5,ffffffff825c8e55) at __assert+0x25 sys/kern/subr_prf.c:157 uvm_pageunwire(fffffd8006cd3660) at uvm_pageunwire+0x16b sys/uvm/uvm_page.c:1269 uvm_fault_unwire_locked(fffffd807dd4c180,623ace3f000,623ad03e000) at uvm_fault_unwire_locked+0x226 sys/uvm/uvm_fault.c:1682 uvm_unmap_kill_entry_withlock(fffffd807dd4c180,fffffd80646685e8,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:1888 uvm_map_teardown(fffffd807dd4c180) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd807dd4c180) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2523 uvmspace_free(fffffd807dd4c180) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436 reaper(ffff8000212337a8) at reaper+0x19a sys/kern/kern_exit.c:448 end trace frame: 0x0, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800021239330 rbx 0xffffffff82928b8f cpu_info_full_primary+0x2b8f rdx 0 rcx 0 rax 0xffff8000212337a8 r8 0x101010101010101 r9 0x8080808080808080 r10 0x3e44c1831ed31b79 r11 0x3f90239b7c5996c7 r12 0xffffffff82928990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff81ed8e98 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021239320 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (reaper) pid=167158 stat=onproc flags process=14000 proc=200 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800021233ce8,0xffff800021233518 process=0xffff8000fffff608 user=0xffff800021234000, vmspace=0xffffffff82b07570 estcpu=36, cpticks=84, pctcpu=19.74 user=0, sys=193, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 49569 226531 55358 0 2 0 syz-executor.2 70542 176347 58303 0 2 0 syz-executor.6 70542 84315 58303 0 2 0x4000000 syz-executor.6 38425 283301 6736 0 3 0x3000 suspend syz-executor.5 38425 425445 6736 0 2 0x4081080 syz-executor.5 6736 419793 44659 0 2 0x482 syz-executor.5 41994 13471 44659 0 2 0x482 syz-executor.3 58303 333295 44659 0 2 0x482 syz-executor.6 61243 277460 44659 0 3 0x82 piperd syz-executor.1 60013 508218 44659 0 2 0x482 syz-executor.7 55358 211738 44659 0 2 0x2 syz-executor.2 18375 358433 44659 0 3 0x82 wait syz-executor.0 22496 362757 0 0 3 0x14200 bored sosplice 29207 65596 0 0 3 0x14280 nfsidl nfsio 18311 59665 0 0 3 0x14280 nfsidl nfsio 65250 23769 0 0 3 0x14280 nfsidl nfsio 37611 320776 0 0 3 0x14280 nfsidl nfsio 75082 267485 0 0 3 0x14280 nfsidl nfsio 12351 219945 0 0 3 0x14280 nfsidl nfsio 48953 153684 0 0 3 0x14280 nfsidl nfsio 27304 4834 0 0 3 0x14280 nfsidl nfsio 74513 118840 0 0 3 0x14280 nfsidl nfsio 9738 468689 0 0 3 0x14280 nfsidl nfsio 86194 332073 0 0 3 0x14280 nfsidl nfsio 37247 394998 0 0 3 0x14280 nfsidl nfsio 74713 263154 0 0 3 0x14280 nfsidl nfsio 42676 416025 0 0 3 0x14280 nfsidl nfsio 81587 468288 0 0 3 0x14280 nfsidl nfsio 56162 284040 0 0 3 0x14280 nfsidl nfsio 11651 143599 0 0 3 0x14280 nfsidl nfsio 44136 419107 0 0 3 0x14280 nfsidl nfsio 22602 433198 0 0 3 0x14280 nfsidl nfsio 20717 196546 0 0 3 0x14280 nfsidl nfsio 44659 139543 69641 0 3 0x82 thrsleep syz-fuzzer 44659 496153 69641 0 2 0x4000482 syz-fuzzer 44659 497715 69641 0 3 0x4000082 wait syz-fuzzer 44659 255974 69641 0 3 0x4000082 wait syz-fuzzer 44659 464919 69641 0 3 0x4000082 thrsleep syz-fuzzer 44659 206549 69641 0 3 0x4000082 thrsleep syz-fuzzer 44659 305156 69641 0 3 0x4000082 thrsleep syz-fuzzer 44659 510445 69641 0 3 0x4000082 wait syz-fuzzer 44659 477303 69641 0 3 0x4000082 thrsleep syz-fuzzer 44659 504627 69641 0 3 0x4000082 thrsleep syz-fuzzer 44659 131602 69641 0 3 0x4000082 wait syz-fuzzer 44659 57137 69641 0 3 0x4000082 wait syz-fuzzer 44659 431577 69641 0 3 0x4000082 wait syz-fuzzer 44659 19873 69641 0 3 0x4000082 wait syz-fuzzer 44659 458602 69641 0 2 0x4000082 syz-fuzzer 44659 87868 69641 0 3 0x4000082 wait syz-fuzzer 69641 214371 50997 0 3 0x10008a sigsusp ksh 50997 443825 36982 0 3 0x9a kqread sshd 18121 257119 1 0 3 0x100083 ttyin getty 36982 465519 1 0 3 0x88 kqread sshd 74111 137475 96023 74 2 0x1100492 pflogd 96023 251476 1 0 3 0x80 netio pflogd 70109 140156 48585 73 7 0x1100010 syslogd 48585 474652 1 0 3 0x100082 netio syslogd 52488 241432 1 0 3 0x100080 kqread resolvd 53053 444798 63347 77 3 0x100092 kqread dhcpleased 72216 437141 63347 77 3 0x100092 kqread dhcpleased 63347 339149 1 0 3 0x80 kqread dhcpleased 78138 16195 0 0 2 0x14200 smr 78696 227486 0 0 2 0x14200 zerothread 52278 216284 0 0 3 0x14200 aiodoned aiodoned 8682 352205 0 0 2 0x14600 update 93850 416361 0 0 3 0x14200 cleaner cleaner *49911 167158 0 0 7 0x14200 reaper 67394 25550 0 0 3 0x14200 pgdaemon pagedaemon 37120 438152 0 0 3 0x14200 bored viomb 89786 87001 0 0 3 0x40014200 acpi0 acpi0 19506 500144 0 0 3 0x40014200 idle1 97604 319820 0 0 3 0x14200 bored softnet 96754 71316 0 0 3 0x14200 bored softnet 93128 433667 0 0 2 0x14200 softnet 10230 101788 0 0 3 0x14200 bored softnet 18219 478044 0 0 2 0x14200 systqmp 55780 8132 0 0 2 0x14200 systq 53059 65741 0 0 2 0x40014200 softclock 47678 509991 0 0 3 0x40014200 idle0 1 33114 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 (0xffffffff82b06610) #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:1681 #4 uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:1888 #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:2523 #6 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436 #7 reaper+0x19a sys/kern/kern_exit.c:448 #8 proc_trampoline+0x1c Process 70109 (syslogd) thread 0xffff8000ffff7a50 (140156) exclusive rrwlock inode r = 0 (0xfffffd806e9e30a0) #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:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0xf5 sys/kern/vfs_syscalls.c:2935 #6 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #6 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 Process 49911 (reaper) thread 0xffff8000212337a8 (167158) exclusive rwlock uobjlk r = 0 (0xfffffd807d844638) #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:1669 #3 uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:1888 #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:2523 #5 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436 #6 reaper+0x19a sys/kern/kern_exit.c:448 #7 proc_trampoline+0x1c exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82bab598) #0 witness_lock+0x44d #1 uvm_unmap_kill_entry_withlock+0x4c sys/uvm/uvm_map.c:1886 #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:2523 #3 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436 #4 reaper+0x19a sys/kern/kern_exit.c:448 #5 proc_trampoline+0x1c exclusive mutex &uvm.pageqlock r = 0 (0xffffffff82b06610) #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:1681 #4 uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:1888 #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:2523 #6 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436 #7 reaper+0x19a sys/kern/kern_exit.c:448 #8 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10217 6550K 6881K 78643K 14986 0 pcb 13 12K 14K 78643K 450 0 rtable 197 12K 14K 78643K 1248 0 ifaddr 116 25K 26K 78643K 368 0 sysctl 2 0K 0K 78643K 2 0 counters 52 35K 35K 78643K 144 0 ioctlops 0 0K 4K 78643K 1886 0 iov 0 0K 24K 78643K 399 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1342 84K 84K 78643K 2808 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 35 0 VM map 2 1K 1K 78643K 2 0 sem 10 1K 1K 78643K 13 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 12 41K 89K 78643K 3232 0 sigio 0 0K 0K 78643K 216 0 proc 71 91K 127K 78643K 1076 0 subproc 91 5K 7K 78643K 312 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 232 0 in_multi 81 5K 6K 78643K 399 0 ether_multi 1 0K 0K 78643K 27 0 mrt 68 4K 4K 78643K 73 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 1424 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 8 62K 64K 78643K 10 0 UVM amap 312 169K 182K 78643K 21024 0 UVM aobj 105 7K 7K 78643K 105 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 88 0 NDP 12 0K 1K 78643K 110 0 temp 130 4734K 70270K 78643K 28271 0 kqueue 12 18K 26K 78643K 255 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 120 424 0 421 10 9 1 3 0 8 0 rtentry 112 348 0 271 4 1 3 4 0 8 0 unpcb 144 1944 0 1929 24 23 1 6 0 8 0 syncache 296 9 0 9 3 3 0 1 0 8 0 tcpqe 32 171 0 171 1 1 0 1 0 8 0 tcpcb 768 510 0 505 17 16 1 5 0 8 0 arp 120 52 0 38 1 0 1 1 0 8 0 inpcb 368 2189 0 2182 37 36 1 10 0 8 0 nd6 48 84 0 66 1 0 1 1 0 8 0 pkpcb 40 6 0 6 1 1 0 1 0 8 0 kcovpl 48 24 0 17 1 0 1 1 0 8 0 ppxss 1256 25 0 25 5 5 0 1 0 8 0 pfstscr 40 9 0 9 1 1 0 1 0 8 0 pffrag 232 30 0 29 2 1 1 1 0 482 0 pffrnode 88 28 0 27 2 1 1 1 0 8 0 pffrent 40 135 0 134 2 1 1 1 0 8 0 pfosfp 40 1431 0 1007 5 0 5 5 0 8 0 pfosfpen 112 1431 0 716 21 0 21 21 0 8 0 pfrktable 1344 55 0 48 1 0 1 1 0 8 0 pfanchor 1280 11 0 3 1 0 1 1 0 8 0 pftag 88 6 0 4 2 1 1 1 0 8 0 pfstitem 24 28 0 26 1 0 1 1 0 8 0 pfstkey 120 46 0 44 1 0 1 1 0 8 0 pfstate 336 37 0 35 2 1 1 2 0 8 0 pfrule 1360 94 0 80 3 1 2 2 0 8 0 art_heap8 4096 4 0 3 2 1 1 2 0 8 0 art_heap4 256 1700 0 1346 39 16 23 29 0 8 0 art_table 32 1704 0 1349 4 0 4 4 0 8 0 art_node 16 347 0 280 1 0 1 1 0 8 0 sysvmsgpl 40 41 0 6 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 102 0 0 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5442 0 3998 91 0 91 91 0 8 0 ffsino 272 5442 0 3998 97 0 97 97 0 8 0 nchpl 144 10976 0 9330 63 0 63 63 0 8 0 rtmask 32 5 0 5 2 2 0 1 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 39029 0 39029 3 2 1 2 0 8 1 percpumem 16 84 0 46 1 0 1 1 0 8 0 vcpupl 2048 69 0 0 9 0 9 9 0 8 0 vmpool 568 69 0 0 5 0 5 5 0 8 0 pfiaddrpl 120 24 0 15 1 0 1 1 0 8 0 kstatmem 264 102 0 78 3 1 2 3 0 8 0 scxspl 216 27821 0 27821 15 14 1 8 0 8 1 plimitpl 152 385 0 368 1 0 1 1 0 8 0 sigapl 424 3528 0 3460 10 2 8 8 0 8 0 futexpl 64 27068 0 27067 1 0 1 1 0 8 0 knotepl 120 509 0 0 16 1 15 15 0 8 0 kqueuepl 216 619 0 611 9 8 1 5 0 8 0 pipepl 320 658 0 631 22 19 3 8 0 8 0 fdescpl 496 3489 0 3464 6 2 4 5 0 8 0 filepl 152 23827 0 23605 54 43 11 21 0 8 1 lockfpl 104 1135 0 1133 3 2 1 2 0 8 0 lockfspl 48 295 0 293 1 0 1 1 0 8 0 sessionpl 144 40 0 23 1 0 1 1 0 8 0 pgrppl 48 82 0 65 1 0 1 1 0 8 0 ucredpl 104 3208 0 3196 1 0 1 1 0 8 0 zombiepl 144 3466 0 3460 1 0 1 1 0 8 0 processpl 1064 3528 0 3460 5 0 5 5 0 8 0 procpl 672 9623 0 9532 12 3 9 10 0 8 0 srpgc 96 32 0 32 7 7 0 1 0 8 0 sosppl 168 15 0 15 4 4 0 1 0 8 0 sockpl 488 4565 0 4540 119 115 4 33 0 8 0 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 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 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 368 0 0 45 0 45 45 0 8 0 mtagpl 96 253 0 0 6 1 5 5 0 8 0 mbufpl 256 8911 0 0 549 1 548 548 0 8 0 bufpl 288 8969 0 2630 454 0 454 454 0 8 0 anonpl 24 709434 0 686667 178 39 139 139 0 186 0 amapchunkpl 152 70538 0 69498 52 10 42 44 0 158 1 amappl16 200 10863 0 10304 74 42 32 43 0 8 0 amappl15 192 1038 0 1034 1 0 1 1 0 8 0 amappl14 184 956 0 947 1 0 1 1 0 8 0 amappl13 176 827 0 819 1 0 1 1 0 8 0 amappl12 168 400 0 391 1 0 1 1 0 8 0 amappl11 160 372 0 350 2 0 2 2 0 8 0 amappl10 152 18 0 14 2 1 1 1 0 8 0 amappl9 144 682 0 682 4 4 0 1 0 8 0 amappl8 136 927 0 844 3 0 3 3 0 8 0 amappl7 128 205 0 183 1 0 1 1 0 8 0 amappl6 120 489 0 470 2 1 1 2 0 8 0 amappl5 112 1757 0 1744 1 0 1 1 0 8 0 amappl4 104 2186 0 2149 2 0 2 2 0 8 0 amappl3 96 10391 0 10323 2 0 2 2 0 8 0 amappl2 88 1686 0 1621 3 1 2 3 0 8 0 amappl1 80 88453 0 87644 25 7 18 23 0 8 0 amappl 88 20213 0 20023 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 72 104 0 0 2 0 2 2 0 8 0 uaddrrnd 24 3558 0 3460 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3558 0 3460 1 0 1 1 0 8 0 vmmpekpl 168 32344 0 32264 5 0 5 5 0 8 0 vmmpepl 168 350457 0 347423 212 72 140 165 0 357 0 vmsppl 368 3557 0 3459 10 0 10 10 0 8 0 rwobjpl 56 93298 0 85455 113 1 112 112 0 8 0 pdppl 4096 7123 0 6987 366 228 138 140 0 8 2 pvpl 32 1451785 0 1426523 348 91 257 267 0 265 28 pmappl 248 3557 0 3459 7 0 7 7 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1727 0 293 42 0 42 42 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(ffffffff825a152f) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff8261b854,ffffffff82592a19,4f5,ffffffff825c8e55) at __assert+0x25 sys/kern/subr_prf.c:157 uvm_pageunwire(fffffd8006cd3660) at uvm_pageunwire+0x16b sys/uvm/uvm_page.c:1269 uvm_fault_unwire_locked(fffffd807dd4c180,623ace3f000,623ad03e000) at uvm_fault_unwire_locked+0x226 sys/uvm/uvm_fault.c:1682 uvm_unmap_kill_entry_withlock(fffffd807dd4c180,fffffd80646685e8,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:1888 uvm_map_teardown(fffffd807dd4c180) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd807dd4c180) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2523 uvmspace_free(fffffd807dd4c180) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436 reaper(ffff8000212337a8) at reaper+0x19a sys/kern/kern_exit.c:448 end trace frame: 0x0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020dd8ff0) 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(ffffffff82bab390) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82bab390) at __mp_lock+0x129 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82bab390,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3bb sys/kern/sched_bsd.c:415 sleep_finish(ffff8000212bc5a0,1) at sleep_finish+0x180 sys/kern/kern_synch.c:417 tsleep(fffffd806ed06e48,11,ffffffff825b5f4b,0) at tsleep+0x12c sys/kern/kern_synch.c:155 vwaitforio(fffffd806ed06dc8,0,ffffffff825b5f4b,ffffffffffffffff) at vwaitforio+0x98 sys/kern/vfs_subr.c:1918 ffs_fsync(ffff8000212bc6f0) at ffs_fsync+0x38e sys/ufs/ffs/ffs_vnops.c:495 VOP_FSYNC(fffffd806ed06dc8,fffffd807f7d7b60,1,ffff8000ffff7a50) at VOP_FSYNC+0xce sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffff7a50,ffff8000212bc7e0,ffff8000212bc830) at sys_fsync+0x109 sys/kern/vfs_syscalls.c:2935 syscall(ffff8000212bc8b0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff8000212bc8b0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcc550, count: 1 ddb{1}> trace x86_ipi_db(ffff800020dd8ff0) 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(ffffffff82bab390) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82bab390) at __mp_lock+0x129 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82bab390,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3bb sys/kern/sched_bsd.c:415 sleep_finish(ffff8000212bc5a0,1) at sleep_finish+0x180 sys/kern/kern_synch.c:417 tsleep(fffffd806ed06e48,11,ffffffff825b5f4b,0) at tsleep+0x12c sys/kern/kern_synch.c:155 vwaitforio(fffffd806ed06dc8,0,ffffffff825b5f4b,ffffffffffffffff) at vwaitforio+0x98 sys/kern/vfs_subr.c:1918 ffs_fsync(ffff8000212bc6f0) at ffs_fsync+0x38e sys/ufs/ffs/ffs_vnops.c:495 VOP_FSYNC(fffffd806ed06dc8,fffffd807f7d7b60,1,ffff8000ffff7a50) at VOP_FSYNC+0xce sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffff7a50,ffff8000212bc7e0,ffff8000212bc830) at sys_fsync+0x109 sys/kern/vfs_syscalls.c:2935 syscall(ffff8000212bc8b0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff8000212bc8b0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcc550, count: -14