panic: kernel diagnostic assertion "pg->wire_count == 1" failed: file "/syzkaller/managers/main/kernel/sys/kern/vfs_biomem.c", line 310 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *347940 88698 0 0x14000 0x200 0 reaper db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff828522c7) at panic+0x165 sys/kern/subr_prf.c:198 __assert(ffffffff828d59a6,ffffffff828f0779,136,ffffffff8289be59) at __assert+0x29 sys/kern/subr_prf.c:157 buf_free_pages(fffffd8067f227e0) at buf_free_pages+0x1d2 sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd8067f227e0) at buf_dealloc_mem+0xe3 sys/kern/vfs_biomem.c:179 buf_put(fffffd8067f227e0) at buf_put+0x165 sys/kern/vfs_bio.c:130 brelse(fffffd8067f227e0) at brelse+0x5c3 sys/kern/vfs_bio.c:957 vinvalbuf(fffffd805e7e76d8,2,ffffffffffffffff,ffff80002a5d7d40,0,ffffffffffffffff) at vinvalbuf+0x391 sys/kern/vfs_subr.c:2021 ffs_truncate(fffffd806ebe2e10,0,0,ffffffffffffffff) at ffs_truncate+0xebe sys/ufs/ffs/ffs_inode.c:324 ufs_inactive(ffff80002a5d52d8) at ufs_inactive+0x152 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd805e7e76d8,ffff80002a5d7d40) at VOP_INACTIVE+0xbf sys/kern/vfs_vops.c:489 vrele(fffffd805e7e76d8) at vrele+0xcd sys/kern/vfs_subr.c:827 uvm_unmap_detach(ffff80002a5d53e0,1) at uvm_unmap_detach+0x1c2 sys/uvm/uvm_map.c:1392 uvm_map_teardown(fffffd805b8f6858) at uvm_map_teardown+0x28f sys/uvm/uvm_map.c:2587 end trace frame: 0xffff80002a5d5460, count: 0 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: kernel diagnostic assertion "pg->wire_count == 1" failed: file "/syzkaller/managers/main/kernel/sys/kern/vfs_biomem.c", line 310 ddb> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff828522c7) at panic+0x165 sys/kern/subr_prf.c:198 __assert(ffffffff828d59a6,ffffffff828f0779,136,ffffffff8289be59) at __assert+0x29 sys/kern/subr_prf.c:157 buf_free_pages(fffffd8067f227e0) at buf_free_pages+0x1d2 sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd8067f227e0) at buf_dealloc_mem+0xe3 sys/kern/vfs_biomem.c:179 buf_put(fffffd8067f227e0) at buf_put+0x165 sys/kern/vfs_bio.c:130 brelse(fffffd8067f227e0) at brelse+0x5c3 sys/kern/vfs_bio.c:957 vinvalbuf(fffffd805e7e76d8,2,ffffffffffffffff,ffff80002a5d7d40,0,ffffffffffffffff) at vinvalbuf+0x391 sys/kern/vfs_subr.c:2021 ffs_truncate(fffffd806ebe2e10,0,0,ffffffffffffffff) at ffs_truncate+0xebe sys/ufs/ffs/ffs_inode.c:324 ufs_inactive(ffff80002a5d52d8) at ufs_inactive+0x152 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd805e7e76d8,ffff80002a5d7d40) at VOP_INACTIVE+0xbf sys/kern/vfs_vops.c:489 vrele(fffffd805e7e76d8) at vrele+0xcd sys/kern/vfs_subr.c:827 uvm_unmap_detach(ffff80002a5d53e0,1) at uvm_unmap_detach+0x1c2 sys/uvm/uvm_map.c:1392 uvm_map_teardown(fffffd805b8f6858) at uvm_map_teardown+0x28f sys/uvm/uvm_map.c:2587 uvmspace_free(fffffd805b8f6858) at uvmspace_free+0x96 sys/uvm/uvm_map.c:3497 reaper(ffff80002a5d7d40) at reaper+0x15d sys/kern/kern_exit.c:463 end trace frame: 0x0, count: -16 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002a5d4df0 rbx 0 rdx 0 rcx 0 rax 0xffff80002a5d7d40 r8 0x101010101010101 r9 0x8080808080808080 r10 0x1ff90367300fe66d r11 0xfc935be0a3d3c732 r12 0 r13 0xfffffd8005ca8900 r14 0 r15 0x1 rip 0xffffffff82075c5c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002a5d4de0 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb> show proc PROC (reaper) tid=347940 pid=88698 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=17, usrpri=82, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a58dd38,0xffff80002a5d7800 process=0xffff8000fffff240 user=0xffff80002a5d0000, vmspace=0xffffffff82dc39f8 estcpu=32, cpticks=2, pctcpu=18.24, user=0, sys=2, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 49244 322754 481 0 3 0x10008a sigsusp sh 53558 359096 37872 0 3 0x10008a sigsusp sh 481 234477 95805 0 3 0x82 wait syz-executor.1 37872 511111 95805 0 3 0x82 wait syz-executor.4 85067 46465 42061 0 3 0x10008a sigsusp sh 42061 124847 95805 0 3 0x82 wait syz-executor.0 69538 414282 0 0 3 0x14280 nfsidl nfsio 83327 121510 0 0 3 0x14280 nfsidl nfsio 9500 489207 0 0 3 0x14280 nfsidl nfsio 12495 279112 0 0 3 0x14280 nfsidl nfsio 39594 219191 0 0 3 0x14280 nfsidl nfsio 34950 344944 0 0 3 0x14280 nfsidl nfsio 77368 202858 0 0 3 0x14280 nfsidl nfsio 84644 430216 0 0 3 0x14280 nfsidl nfsio 59105 441210 0 0 3 0x14280 nfsidl nfsio 10775 473717 0 0 3 0x14280 nfsidl nfsio 67379 370076 0 0 3 0x14280 nfsidl nfsio 51502 413559 0 0 3 0x14280 nfsidl nfsio 15444 190585 0 0 3 0x14280 nfsidl nfsio 76449 344078 0 0 3 0x14280 nfsidl nfsio 21855 396397 0 0 3 0x14280 nfsidl nfsio 28972 475327 0 0 3 0x14280 nfsidl nfsio 42203 14247 0 0 3 0x14280 nfsidl nfsio 56226 411844 0 0 3 0x14280 nfsidl nfsio 30522 268028 0 0 3 0x14280 nfsidl nfsio 95819 86410 0 0 3 0x14280 nfsidl nfsio 48158 503278 0 0 3 0x14200 acct acct 62881 472141 1 0 3 0x100083 ttyin getty 91100 333331 12154 0 3 0x100082 netio arp 12154 353813 1 0 3 0x10008a sigsusp sh 65528 164687 12366 0 3 0x100082 netio arp 12366 356027 1 0 3 0x10008a sigsusp sh 82947 328428 0 0 3 0x14200 bored sosplice 95805 91447 21112 0 3 0x2000082 thrsleep syz-fuzzer 95805 286000 21112 0 2 0x6000002 syz-fuzzer 95805 266871 21112 0 3 0x6000082 thrsleep syz-fuzzer 95805 408572 21112 0 3 0x6000082 wait syz-fuzzer 95805 389105 21112 0 3 0x6000082 thrsleep syz-fuzzer 95805 70070 21112 0 3 0x6000082 wait syz-fuzzer 95805 139895 21112 0 3 0x6000082 wait syz-fuzzer 95805 237335 21112 0 3 0x6000082 thrsleep syz-fuzzer 95805 145382 21112 0 3 0x6000082 thrsleep syz-fuzzer 95805 305826 21112 0 3 0x6000082 thrsleep syz-fuzzer 95805 4853 21112 0 3 0x6000082 thrsleep syz-fuzzer 95805 13436 21112 0 2 0x6000002 syz-fuzzer 95805 243230 21112 0 3 0x6000082 thrsleep syz-fuzzer 95805 292178 21112 0 3 0x6000082 thrsleep syz-fuzzer 21112 66756 18153 0 3 0x10008a sigsusp ksh 18153 180277 13115 0 3 0x9a kqread sshd 13115 88192 1 0 3 0x88 kqread sshd 17148 222453 30588 73 2 0x1100010 syslogd 30588 29431 1 0 3 0x100082 netio syslogd 96230 463376 1 0 3 0x100080 kqread resolvd 73992 407208 9403 77 2 0x100012 dhcpleased 15842 482995 9403 77 3 0x100092 kqread dhcpleased 9403 52881 1 0 3 0x80 kqread dhcpleased 47378 294442 0 0 3 0x14200 bored smr 83581 308366 0 0 2 0x14200 zerothread 61011 354278 0 0 3 0x14200 aiodoned aiodoned 20535 450756 0 0 3 0x14200 syncer update 32541 502733 0 0 3 0x14200 cleaner cleaner *88698 347940 0 0 7 0x14200 reaper 84274 28605 0 0 3 0x14200 pgdaemon pagedaemon 88370 121969 0 0 3 0x14200 bored viomb 56567 12752 0 0 3 0x40014200 acpi0 acpi0 92118 367508 0 0 3 0x14200 bored softnet3 71455 69330 0 0 3 0x14200 bored softnet2 70823 54882 0 0 3 0x14200 bored softnet1 89102 312388 0 0 3 0x14200 bored softnet0 41315 157563 0 0 3 0x14200 bored systqmp 91980 16211 0 0 3 0x14200 bored systq 84782 215000 0 0 3 0x40014200 tmoslp softclock 19430 197922 0 0 3 0x40014200 idle0 1 86276 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10192 6429K 8186K 166960K 54939 0 pcb 15 22K 24K 166960K 2554 0 rtable 67 10K 16K 166960K 6923 0 pf 19 7K 10K 166960K 961 0 ifaddr 14 9K 16K 166960K 967 0 ifgroup 30 1K 2K 166960K 1668 0 sysctl 4 1K 1K 166960K 8 0 counters 25 16K 18K 166960K 479 0 ioctlops 0 0K 2K 166960K 1991 0 iov 0 0K 32K 166960K 3396 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1748 109K 110K 166960K 20297 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 63 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 4011 0 dirhash 12 2K 2K 166960K 267 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 12 41K 93K 166960K 27923 0 sigio 0 0K 0K 166960K 478 0 proc 64 59K 84K 166960K 5950 0 subproc 65 4K 8K 166960K 2184 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 2882 0 in_multi 11 0K 7K 166960K 2100 0 ether_multi 1 0K 0K 166960K 34 0 mrt 1 0K 0K 166960K 16 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 6288 0 pfkey data 0 0K 0K 166960K 13 0 tdb 3 0K 0K 166960K 3 0 pagedep 1 8K 8K 166960K 1 0 inodedep 1 32K 32K 166960K 1 0 newblk 1 0K 0K 166960K 1 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 562 1108K 1153K 166960K 231101 0 UVM aobj 131 4K 4K 166960K 137 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 910 0 NDP 6 0K 2K 166960K 786 0 temp 56 6702K 7028K 166960K 238425 0 kqueue 12 18K 30K 166960K 2131 0 SYN cache 2 1236K 1244K 166960K 3 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 1781 0 1776 20 19 1 3 0 8 0 rtentry 112 2251 0 2229 9 5 4 4 0 8 3 unpcb 144 24080 0 24067 256 255 1 10 0 8 0 syncache 320 319 0 319 56 56 0 1 0 8 0 tcpqe 32 451 0 451 43 43 0 1 0 8 0 tcpcb 808 10446 0 10438 334 332 2 23 0 8 0 arp 88 460 0 458 1 0 1 1 0 8 0 ipq 40 24 0 24 8 8 0 1 0 8 0 ipqe 40 171 0 171 8 8 0 1 0 8 0 inpcb 344 26555 0 26544 468 466 2 23 0 8 0 nd6 104 501 0 501 1 0 1 1 0 8 1 pkpcb 40 237 0 237 22 22 0 1 0 8 0 kcovpl 48 168 0 163 1 0 1 1 0 8 0 ppxss 1072 106 0 106 28 28 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 8092 0 7996 147 125 22 31 0 8 16 art_table 32 8093 0 7996 8 4 4 4 0 8 3 art_node 16 2225 0 2205 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 0 1 0 1 1 0 8 0 semapl 112 4009 0 3999 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 187 0 170 3 0 3 3 0 8 0 dino2pl 256 40226 0 38674 99 0 99 99 0 8 0 ffsino 240 40226 0 38674 93 0 93 93 0 8 0 nchpl 144 78239 0 76613 63 0 63 63 0 8 0 uvmvnodes 80 8299 0 0 170 0 170 170 0 8 0 vnodes 216 8299 0 0 462 0 462 462 0 8 0 namei 1024 288350 0 288350 38 37 1 3 0 8 1 vcpupl 2048 381 0 1 48 0 48 48 0 8 0 vmpool 664 427 0 47 34 2 32 32 0 8 0 kstatmem 264 920 0 908 8 6 2 3 0 8 0 scxspl 216 266457 0 266457 67 66 1 8 1 8 1 plimitpl 152 2568 0 2555 1 0 1 1 0 8 0 sigapl 424 29852 0 29787 19 11 8 9 0 8 0 futexpl 64 260757 0 260757 18 18 0 1 0 8 0 knotepl 120 243699 0 243641 72 69 3 11 0 8 0 kqueuepl 184 4948 0 4940 60 59 1 7 0 8 0 pipepl 288 6417 0 6398 148 145 3 9 0 8 1 fdescpl 432 27891 0 27868 6 2 4 5 0 8 0 filepl 120 183716 0 183549 303 292 11 21 0 8 3 lockfpl 104 10287 0 10285 19 18 1 3 0 8 0 lockfspl 48 3815 0 3813 1 0 1 1 0 8 0 sessionpl 144 183 0 169 1 0 1 1 0 8 0 pgrppl 48 769 0 755 1 0 1 1 0 8 0 ucredpl 104 22462 0 22440 1 0 1 1 0 8 0 zombiepl 144 29791 0 29787 5 4 1 1 0 8 0 processpl 1072 29852 0 29787 6 0 6 6 0 8 0 procpl 680 70663 0 70585 45 37 8 10 0 8 0 sosppl 168 363 0 363 50 50 0 1 0 8 0 sockpl 456 52844 0 52815 1162 1157 5 38 0 8 0 mcl64k 65536 1243 0 1243 84 84 0 1 0 8 0 mcl16k 16384 665 0 665 82 82 0 1 0 8 0 mcl12k 12288 1036 0 1036 77 77 0 1 0 8 0 mcl9k 9216 554 0 554 73 73 0 1 0 8 0 mcl8k 8192 1670 0 1670 70 69 1 1 0 8 1 mcl4k 4096 3363 0 3363 72 71 1 8 0 8 1 mcl2k2 2112 184 0 184 76 76 0 1 0 8 0 mcl2k 2048 128408 0 128362 108 95 13 30 0 8 4 mtagpl 96 3851 0 3851 58 51 7 13 0 8 7 mbufpl 256 530261 0 530165 1313 1280 33 98 0 8 8 bufpl 288 52652 0 43910 625 0 625 625 0 8 0 anonpl 24 2592814 0 2581001 362 242 120 165 0 188 9 amapchunkpl 152 710805 0 710114 180 132 48 68 0 158 8 amappl16 200 49123 0 48637 242 213 29 40 0 8 0 amappl15 192 35 0 34 1 0 1 1 0 8 0 amappl14 184 626 0 607 4 2 2 2 0 8 0 amappl13 176 208 0 206 1 0 1 1 0 8 0 amappl12 168 30780 0 30749 3 1 2 3 0 8 0 amappl11 160 74 0 61 1 0 1 1 0 8 0 amappl10 152 218 0 210 1 0 1 1 0 8 0 amappl9 144 277 0 277 55 55 0 1 0 8 0 amappl8 136 1355 0 1212 8 2 6 6 0 8 0 amappl7 128 601 0 575 2 0 2 2 0 8 0 amappl6 120 2776 0 2744 2 1 1 2 0 8 0 amappl5 112 650 0 642 1 0 1 1 0 8 0 amappl4 104 1665 0 1636 2 1 1 2 0 8 0 amappl3 96 157277 0 157199 21 17 4 4 0 8 0 amappl2 88 29958 0 29882 3 1 2 3 0 8 0 amappl1 80 285695 0 285051 34 15 19 22 0 8 0 amappl 88 228801 0 228539 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 28318 0 27912 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 28318 0 27912 3 0 3 3 0 8 0 vmmpekpl 168 199326 0 199210 6 0 6 6 0 8 0 vmmpepl 168 2056280 0 2053495 640 475 165 189 0 357 4 vmsppl 352 28317 0 27911 42 4 38 38 0 8 0 rwobjpl 24 489891 0 479656 70 7 63 63 0 8 0 pdppl 4096 56642 0 56202 1944 1496 448 455 0 8 8 pvpl 32 7609440 0 7591885 943 698 245 361 0 265 49 pmappl 216 28317 0 27911 27 4 23 23 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 5257 0 3855 43 1 42 42 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff828522c7) at panic+0x165 sys/kern/subr_prf.c:198 __assert(ffffffff828d59a6,ffffffff828f0779,136,ffffffff8289be59) at __assert+0x29 sys/kern/subr_prf.c:157 buf_free_pages(fffffd8067f227e0) at buf_free_pages+0x1d2 sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd8067f227e0) at buf_dealloc_mem+0xe3 sys/kern/vfs_biomem.c:179 buf_put(fffffd8067f227e0) at buf_put+0x165 sys/kern/vfs_bio.c:130 brelse(fffffd8067f227e0) at brelse+0x5c3 sys/kern/vfs_bio.c:957 vinvalbuf(fffffd805e7e76d8,2,ffffffffffffffff,ffff80002a5d7d40,0,ffffffffffffffff) at vinvalbuf+0x391 sys/kern/vfs_subr.c:2021 ffs_truncate(fffffd806ebe2e10,0,0,ffffffffffffffff) at ffs_truncate+0xebe sys/ufs/ffs/ffs_inode.c:324 ufs_inactive(ffff80002a5d52d8) at ufs_inactive+0x152 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd805e7e76d8,ffff80002a5d7d40) at VOP_INACTIVE+0xbf sys/kern/vfs_vops.c:489 vrele(fffffd805e7e76d8) at vrele+0xcd sys/kern/vfs_subr.c:827 uvm_unmap_detach(ffff80002a5d53e0,1) at uvm_unmap_detach+0x1c2 sys/uvm/uvm_map.c:1392 uvm_map_teardown(fffffd805b8f6858) at uvm_map_teardown+0x28f sys/uvm/uvm_map.c:2587 uvmspace_free(fffffd805b8f6858) at uvmspace_free+0x96 sys/uvm/uvm_map.c:3497 reaper(ffff80002a5d7d40) at reaper+0x15d sys/kern/kern_exit.c:463 end trace frame: 0x0, count: -16 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff828522c7) at panic+0x165 sys/kern/subr_prf.c:198 __assert(ffffffff828d59a6,ffffffff828f0779,136,ffffffff8289be59) at __assert+0x29 sys/kern/subr_prf.c:157 buf_free_pages(fffffd8067f227e0) at buf_free_pages+0x1d2 sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd8067f227e0) at buf_dealloc_mem+0xe3 sys/kern/vfs_biomem.c:179 buf_put(fffffd8067f227e0) at buf_put+0x165 sys/kern/vfs_bio.c:130 brelse(fffffd8067f227e0) at brelse+0x5c3 sys/kern/vfs_bio.c:957 vinvalbuf(fffffd805e7e76d8,2,ffffffffffffffff,ffff80002a5d7d40,0,ffffffffffffffff) at vinvalbuf+0x391 sys/kern/vfs_subr.c:2021 ffs_truncate(fffffd806ebe2e10,0,0,ffffffffffffffff) at ffs_truncate+0xebe sys/ufs/ffs/ffs_inode.c:324 ufs_inactive(ffff80002a5d52d8) at ufs_inactive+0x152 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd805e7e76d8,ffff80002a5d7d40) at VOP_INACTIVE+0xbf sys/kern/vfs_vops.c:489 vrele(fffffd805e7e76d8) at vrele+0xcd sys/kern/vfs_subr.c:827 uvm_unmap_detach(ffff80002a5d53e0,1) at uvm_unmap_detach+0x1c2 sys/uvm/uvm_map.c:1392 uvm_map_teardown(fffffd805b8f6858) at uvm_map_teardown+0x28f sys/uvm/uvm_map.c:2587 uvmspace_free(fffffd805b8f6858) at uvmspace_free+0x96 sys/uvm/uvm_map.c:3497 reaper(ffff80002a5d7d40) at reaper+0x15d sys/kern/kern_exit.c:463 end trace frame: 0x0, count: -16