uvm_fault(0xfffffd8062bf8ba0, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND 43185 36790 0 0x1000 0x4080000 1 syz-executor dt_ioctl_record_stop(ffff800001490000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff800036c0e570) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff800036c0e570) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c58eed0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8060708510,81,fffffd80097fb680,ffff800036c0e570) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805f6fc188,ffff800036c0e570) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805f6fc188,ffff800036c0e570) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805f6fc188,ffff800036c0e570) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805f6fc188,ffff800036c0e570) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800036c0e570) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800036c0e570,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800036c0e570,ffff80003c58f240,ffff80003c58f190) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c58f240) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c58f240) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c60aede4d00, 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: uvm_fault(0xfffffd8062bf8ba0, 0x0, 0, 1) -> e ddb{0}> trace dt_ioctl_record_stop(ffff800001490000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff800036c0e570) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff800036c0e570) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c58eed0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8060708510,81,fffffd80097fb680,ffff800036c0e570) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805f6fc188,ffff800036c0e570) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805f6fc188,ffff800036c0e570) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805f6fc188,ffff800036c0e570) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805f6fc188,ffff800036c0e570) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800036c0e570) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800036c0e570,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800036c0e570,ffff80003c58f240,ffff80003c58f190) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c58f240) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c58f240) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c60aede4d00, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c58ee00 rbx 0x1 rdx 0 rcx 0xffff800036c0e570 rax 0xffffffff83794040 dt_prov_syscall r8 0 r9 0 r10 0xd729baee6af87bf r11 0xdcc97200b035d1d7 r12 0 r13 0 r14 0 r15 0xffff8000014aa000 rip 0xffffffff813e5048 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003c58edd0 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{0}> show proc PROC (syz-executor) tid=74447 pid=94663 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800036c0e570 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c4a87f8,0xffff800036c0fa40 process=0xffff800037826b70 user=0xffff80003c58a000, vmspace=0xfffffd8062bf8ba0 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 74598 192584 59254 0 2 0 syz-executor 74598 500837 59254 0 3 0x4000080 bell syz-executor 30701 462427 11887 0 3 0x80 nanoslp syz-executor 30701 100301 11887 0 3 0x4000080 fsleep syz-executor 30701 185511 11887 0 3 0x4000080 ttyin syz-executor 36790 369069 91346 0 3 0x3000 suspend syz-executor 36790 43185 91346 0 7 0x4081000 syz-executor 81347 424688 20914 0 3 0x3000 suspend syz-executor 81347 339801 20914 0 2 0x4081000 syz-executor 81347 162039 20914 0 3 0x4081000 inode syz-executor 81347 15104 20914 0 3 0x4081000 inode syz-executor 81347 114698 20914 0 3 0x4081000 inode syz-executor 81347 80565 20914 0 3 0x4081000 inode syz-executor 91346 515546 98764 0 3 0x82 nanoslp syz-executor 83679 18923 1 0 3 0x100083 ttyopn getty 93082 470005 0 0 3 0x14200 bored sosplice 20914 267032 98764 0 3 0x82 nanoslp syz-executor 43179 423521 98764 0 3 0x82 nanoslp syz-executor 11887 338762 98764 0 3 0x82 nanoslp syz-executor 79759 393266 98764 0 3 0x82 nanoslp syz-executor 56003 513435 98764 0 2 0x2 syz-executor 48493 347359 98764 0 3 0x82 wait syz-executor 59254 364520 98764 0 3 0x82 nanoslp syz-executor 98764 73807 39485 0 3 0x82 kqread syz-executor 39485 408692 17665 0 3 0x10008a sigsusp ksh 17665 134855 45615 0 3 0x98 kqread sshd-session 45615 197628 82830 0 3 0x92 kqread sshd-session 82830 329732 1 0 3 0x88 kqread sshd 58563 87073 23036 74 3 0x1100092 bpf pflogd 23036 462149 1 0 3 0x80 sbwait pflogd 35883 149122 66874 73 3 0x1100090 kqread syslogd 66874 243845 1 0 3 0x100082 sbwait syslogd 23371 432030 1 0 3 0x100080 kqread resolvd 94275 503689 67494 77 3 0x100092 kqread dhcpleased 98005 481699 67494 77 3 0x100092 kqread dhcpleased 67494 134094 1 0 3 0x80 kqread dhcpleased 77474 467776 0 0 3 0x14200 bored smr 192 429846 0 0 3 0x14200 pgzero zerothread 552 360559 0 0 3 0x14200 aiodoned aiodoned 43392 90107 0 0 3 0x14200 syncer update 39223 484238 0 0 3 0x14200 cleaner cleaner 23884 176780 0 0 2 0x14200 reaper 13692 212130 0 0 3 0x14200 pgdaemon pagedaemon 51066 273808 0 0 3 0x14200 bored viomb 88330 85550 0 0 3 0x40014200 acpi0 acpi0 14304 259680 0 0 3 0x40014200 idle1 26934 280792 0 0 3 0x14200 bored softnet7 52472 119260 0 0 3 0x14200 bored softnet6 99074 98648 0 0 3 0x14200 bored softnet5 2521 406779 0 0 3 0x14200 bored softnet4 92606 435455 0 0 3 0x14200 bored softnet3 67043 17044 0 0 3 0x14200 bored softnet2 13202 369736 0 0 3 0x14200 bored softnet1 1888 416363 0 0 3 0x14200 bored softnet0 4307 138823 0 0 3 0x14200 bored systqmp 398 55252 0 0 3 0x14200 bored systq 31570 292801 0 0 3 0x14200 tmoslp softclockmp 38297 39981 0 0 3 0x40014200 tmoslp softclock 29644 138095 0 0 3 0x40014200 idle0 1 433585 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 36790 (syz-executor) thread 0xffff80003c459780 (43185) Process 81347 (syz-executor) thread 0xffff80003c458028 (339801) Process 81347 (syz-executor) thread 0xffff80003c4582c0 (162039) Process 56003 (syz-executor) thread 0xffff80002a2b9ca0 (513435) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10262 11098K 11232K 166960K 13590 0 pcb 17 14K 15K 166960K 539 0 rtable 188 10K 11K 166960K 539 0 pf 43 19K 67487K 166960K 536 0 ifaddr 39 8K 9K 166960K 263 0 ifgroup 63 2K 3K 166960K 604 0 sysctl 4 1K 9K 166960K 15 0 counters 72 37K 38K 166960K 564 0 ioctlops 0 0K 5K 166960K 2325 0 iov 0 0K 24K 166960K 153 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1485 93K 94K 166960K 3509 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 55 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 133 0 dirhash 12 2K 3K 166960K 45 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 2366 0 sigio 0 0K 0K 166960K 35 0 proc 72 115K 180K 166960K 721 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 490 0 in_multi 74 5K 7K 166960K 280 0 ether_multi 1 0K 0K 166960K 52 0 mrt 1 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 589 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 260 169K 183K 166960K 22090 0 UVM aobj 37 6K 6K 166960K 55 0 pinsyscall 42 84K 102K 166960K 3461 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 113 0 NDP 14 0K 2K 166960K 202 0 temp 83 8652K 8899K 166960K 101675 0 kqueue 14 22K 30K 166960K 474 0 SYN cache 2 8K 16K 166960K 3 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 155 0 152 1 0 1 1 0 8 0 rtentry 176 180 0 110 5 0 5 5 0 8 0 unpcb 144 1330 0 1312 8 6 2 4 0 8 1 syncache 336 8 0 8 4 4 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 587 0 579 13 12 1 7 0 8 0 arp 128 22 0 11 1 0 1 1 0 8 0 inpcb 328 2423 0 2411 24 20 4 8 0 8 2 nd6 144 32 0 15 1 0 1 1 0 8 0 pkpcb 40 27 0 27 3 2 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 163 0 163 3 2 1 1 0 8 1 pppxif 1504 26 0 26 5 4 1 1 0 8 1 pfstscr 40 139 0 138 1 0 1 1 0 8 0 pffrag 232 22 0 15 1 0 1 1 0 482 0 pffrnode 88 18 0 12 1 0 1 1 0 8 0 pffrent 40 37 0 30 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 2 0 2 1 1 0 1 0 8 0 pftag 88 4 0 0 1 0 1 1 0 8 0 pfstitem 24 265 0 199 1 0 1 1 0 8 0 pfstkey 128 477 0 300 6 0 6 6 0 8 0 pfstate 384 303 0 240 7 0 7 7 0 8 0 pfrule 1344 138 0 133 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 823 0 489 33 9 24 30 0 8 0 art_table 40 825 0 489 5 0 5 5 0 8 0 art_node 32 177 0 117 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 6 1 0 1 1 0 8 0 semapl 112 127 0 117 1 0 1 1 0 8 0 shmpl 112 52 0 18 1 0 1 1 0 8 0 dirhash 1024 39 0 22 3 0 3 3 0 8 0 dino2pl 256 5982 0 4471 95 0 95 95 0 8 0 ffsino 296 5982 0 4471 117 0 117 117 0 8 0 nchpl 144 9176 0 8570 63 39 24 63 0 8 0 rtmask 32 24 0 24 6 5 1 1 0 8 1 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 30765 0 30760 3 2 1 2 0 8 0 percpumem 16 297 0 246 1 0 1 1 0 8 0 kstatmem 264 370 0 338 3 0 3 3 0 8 0 scsiplug 72 7 0 7 5 4 1 1 0 8 1 scxspl 216 69241 0 69241 20 19 1 8 1 8 1 plimitpl 152 555 0 534 1 0 1 1 0 8 0 sigapl 424 2668 0 2614 9 1 8 9 0 8 0 knotepl 120 749 0 0 23 0 23 23 0 8 0 kqueuepl 224 887 0 877 9 8 1 5 0 8 0 pipepl 344 286 0 258 6 0 6 6 0 8 2 fdescpl 528 2616 0 2585 3 0 3 3 0 8 0 filepl 160 16319 0 16082 30 17 13 19 0 8 1 lockfpl 104 619 0 617 1 0 1 1 0 8 0 lockfspl 48 262 0 260 1 0 1 1 0 8 0 sessionpl 144 28 0 19 1 0 1 1 0 8 0 pgrppl 48 55 0 38 1 0 1 1 0 8 0 ucredpl 104 3335 0 3321 1 0 1 1 0 8 0 zombiepl 144 2780 0 2775 1 0 1 1 0 8 0 processpl 1232 2668 0 2614 6 1 5 6 0 8 0 procpl 664 6022 0 5958 9 2 7 8 0 8 0 sosppl 168 7 0 7 3 3 0 1 0 8 0 sockpl 752 3985 0 3952 30 24 6 12 0 8 2 mcl64k 65536 30 0 0 4 0 4 4 0 8 0 mcl16k 16384 20 0 0 3 0 3 3 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 133 0 0 17 0 17 17 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 32 0 0 4 0 4 4 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 226 0 0 15 0 15 15 0 8 0 bufpl 280 28884 0 22741 440 0 440 440 0 8 0 anonpl 32 11001 0 0 89 0 89 89 0 246 0 amapchunkpl 152 75911 0 75277 47 21 26 29 0 158 0 amappl16 200 9892 0 9776 51 36 15 26 0 8 7 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 139 0 127 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 3275 0 3244 3 1 2 2 0 8 0 amappl11 160 53 0 38 1 0 1 1 0 8 0 amappl10 152 23 0 23 1 1 0 1 0 8 0 amappl9 144 271 0 271 1 1 0 1 0 8 0 amappl8 136 21 0 19 1 0 1 1 0 8 0 amappl7 128 120 0 108 1 0 1 1 0 8 0 amappl6 120 216 0 212 1 0 1 1 0 8 0 amappl5 112 127 0 117 1 0 1 1 0 8 0 amappl4 104 321 0 301 1 0 1 1 0 8 0 amappl3 96 15885 0 15759 5 1 4 4 0 8 0 amappl2 88 685 0 619 2 0 2 2 0 8 0 amappl1 80 18274 0 17668 17 2 15 15 0 8 0 amappl 88 20995 0 20809 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 256 0 256 4 4 0 1 0 8 0 dma64 64 8 0 8 2 2 0 1 0 8 0 dma32 32 8 0 8 2 1 1 1 0 8 1 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 54 0 18 1 0 1 1 0 8 0 uaddrrnd 24 2617 0 2586 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2617 0 2586 1 0 1 1 0 8 0 vmmpekpl 168 20952 0 20904 3 0 3 3 0 8 0 vmmpepl 168 166962 0 164821 125 25 100 110 0 357 2 vmsppl 488 2616 0 2586 7 2 5 5 0 8 0 rwobjpl 80 49114 0 42091 152 6 146 151 0 8 2 pdppl 4096 5242 0 5172 109 37 72 88 0 8 2 pvpl 32 19748 0 0 159 0 159 159 0 265 0 pmappl 256 2616 0 2586 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 318 0 70 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace dt_ioctl_record_stop(ffff800001490000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff800036c0e570) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff800036c0e570) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c58eed0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8060708510,81,fffffd80097fb680,ffff800036c0e570) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805f6fc188,ffff800036c0e570) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805f6fc188,ffff800036c0e570) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805f6fc188,ffff800036c0e570) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805f6fc188,ffff800036c0e570) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800036c0e570) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800036c0e570,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800036c0e570,ffff80003c58f240,ffff80003c58f190) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c58f240) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c58f240) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c60aede4d00, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff838f7d38) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838f7d38) at __mp_lock+0x199 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff838f7d38,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 biowait(fffffd805eb52c40) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd805eb52c40) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs_write(ffff80003c489ac0) at ffs_write+0x810 sys/ufs/ffs/ffs_vnops.c:377 VOP_WRITE(fffffd8068c106d0,ffff80003c489c78,7,fffffd80097fb680) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd80605f3a50,ffff80003c489c78,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80003c459780,4,ffff80003c489c78,0,ffff80003c489d30) at dofilewritev+0x242 sys/kern/sys_generic.c:380 sys_write(ffff80003c459780,ffff80003c489de0,ffff80003c489d30) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80003c489de0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c489de0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 end trace frame: 0xffff80003c489e60, count: 0 ddb{1}> trace x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff838f7d38) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838f7d38) at __mp_lock+0x199 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff838f7d38,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 biowait(fffffd805eb52c40) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd805eb52c40) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs_write(ffff80003c489ac0) at ffs_write+0x810 sys/ufs/ffs/ffs_vnops.c:377 VOP_WRITE(fffffd8068c106d0,ffff80003c489c78,7,fffffd80097fb680) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd80605f3a50,ffff80003c489c78,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80003c459780,4,ffff80003c489c78,0,ffff80003c489d30) at dofilewritev+0x242 sys/kern/sys_generic.c:380 sys_write(ffff80003c459780,ffff80003c489de0,ffff80003c489d30) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80003c489de0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c489de0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x37c28efcac0, count: -15