uvm_fault(0xfffffd806c79a9a0, 0x48, 0, 1) -> e kernel: page fault trap, code=0 Stopped at witness_checkorder+0xb5: movl 0x20(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND 235913 53043 0 0 0 0 syz-executor witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x95 sys/kern/kern_lock.c:406 clockintr_unbind(ffff80000002c730,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001676000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,2,2000,ffff80003c3e1260) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,2,2000,ffff80003c3e1260) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c445bc0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f0ac2a0,2,fffffd80097fd6e8,ffff80003c3e1260) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806bd6c4a0,ffff80003c3e1260) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bd6c4a0,ffff80003c3e1260) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806bd6c4a0,ffff80003c3e1260) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806bd6c4a0,ffff80003c3e1260) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c3e1260) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff80003c3e1260,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c3e1260,ffff80003c445f30,ffff80003c445e80) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c445f30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c445f30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 end trace frame: 0xffff80003c445fb0, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806c79a9a0, 0x48, 0, 1) -> e ddb{1}> trace witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x95 sys/kern/kern_lock.c:406 clockintr_unbind(ffff80000002c730,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001676000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,2,2000,ffff80003c3e1260) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,2,2000,ffff80003c3e1260) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c445bc0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f0ac2a0,2,fffffd80097fd6e8,ffff80003c3e1260) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806bd6c4a0,ffff80003c3e1260) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bd6c4a0,ffff80003c3e1260) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806bd6c4a0,ffff80003c3e1260) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806bd6c4a0,ffff80003c3e1260) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c3e1260) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff80003c3e1260,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c3e1260,ffff80003c445f30,ffff80003c445e80) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c445f30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c445f30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e3f047f7b30, count: -15 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c4459e0 rbx 0 rdx 0 rcx 0xffff80003c3e1260 rax 0xffff8000299bdffe r8 0xffff80003c445cf0 r9 0x40 r10 0x32a00784531c4f1c r11 0xe056145ab0c25a39 r12 0xfe r13 0x9 r14 0x28 r15 0 rip 0xffffffff81823b65 witness_checkorder+0xb5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c445940 ss 0x10 witness_checkorder+0xb5: movl 0x20(%r14),%r15d ddb{1}> show proc PROC (syz-executor) tid=308114 pid=81691 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c3e1260 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c3e0d30,0xffff80003c3e1508 process=0xffff80003c42ce98 user=0xffff80003c440000, vmspace=0xfffffd806c79a9a0 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 53043 235913 15677 0 7 0 syz-executor 53043 24032 15677 0 2 0x4000000 syz-executor 37976 56448 44831 0 2 0 syz-executor 37976 424352 44831 0 3 0x4000080 fsleep syz-executor 12010 7037 24883 0 2 0 syz-executor 12010 511456 24883 0 3 0x4000080 fsleep syz-executor 53261 144107 85571 0 3 0x80 nanoslp syz-executor 53261 183870 85571 0 3 0x4000080 ttyout syz-executor 53261 93695 85571 0 3 0x4000080 fsleep syz-executor 71537 65133 0 0 3 0x14200 acct acct 30998 48430 1 0 3 0x100083 ttyin getty 47243 282531 0 0 3 0x14280 nfsidl nfsio 23849 366986 0 0 3 0x14280 nfsidl nfsio 64669 151729 0 0 3 0x14280 nfsidl nfsio 7861 455457 0 0 3 0x14280 nfsidl nfsio 38506 159210 59712 0 3 0x82 wait syz-executor 44831 412376 59712 0 2 0x2 syz-executor 99763 451784 59712 0 3 0x82 wait syz-executor 24883 133593 59712 0 3 0x82 nanoslp syz-executor 98847 204424 59712 0 3 0x82 nanoslp syz-executor 38661 26916 59712 0 3 0x82 nanoslp syz-executor 15677 271886 59712 0 3 0x82 nanoslp syz-executor 85571 207260 59712 0 3 0x82 nanoslp syz-executor 59712 482445 19650 0 3 0x82 kqread syz-executor 19650 235368 38685 0 3 0x10008a sigsusp ksh 38685 145307 3990 0 3 0x98 kqread sshd-session 3990 248833 71933 0 3 0x92 kqread sshd-session 71933 243538 1 0 3 0x88 kqread sshd 45996 159507 69372 74 3 0x1100092 bpf pflogd 69372 490717 1 0 3 0x80 sbwait pflogd 61311 433669 90063 73 3 0x1100090 kqread syslogd 90063 181916 1 0 3 0x100082 sbwait syslogd 55264 129397 1 0 3 0x100080 kqread resolvd 48551 330846 40251 77 3 0x100092 kqread dhcpleased 47738 288634 40251 77 3 0x100092 kqread dhcpleased 40251 64970 1 0 3 0x80 kqread dhcpleased 30264 313784 0 0 3 0x14200 bored smr 87701 100832 0 0 3 0x14200 pgzero zerothread 29168 219194 0 0 3 0x14200 aiodoned aiodoned 88955 426256 0 0 3 0x14200 syncer update 15728 442507 0 0 3 0x14200 cleaner cleaner 74398 31588 0 0 3 0x14200 reaper reaper 91385 109460 0 0 3 0x14200 pgdaemon pagedaemon 93145 81785 0 0 3 0x14200 bored viomb 89245 227885 0 0 3 0x40014200 acpi0 acpi0 30739 236584 0 0 3 0x40014200 idle1 97258 519835 0 0 3 0x14200 bored softnet1 69619 508215 0 0 3 0x14200 bored softnet0 39977 489897 0 0 3 0x14200 smrbar systqmp 93352 356006 0 0 3 0x14200 bored systq 55529 48474 0 0 3 0x14200 tmoslp softclockmp 2671 235142 0 0 3 0x40014200 tmoslp softclock 10195 108978 0 0 3 0x40014200 idle0 1 95695 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 39977 (systqmp) thread 0xffff8000ffffe000 (489897) shared rwlock systqmp r = 0 (0xffffffff83960178) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11073 12177K 12421K 166960K 12554 0 pcb 17 13K 14K 166960K 132 0 rtable 184 6K 7K 166960K 408 0 pf 31 17K 19K 166960K 94 0 ifaddr 35 6K 8K 166960K 68 0 ifgroup 50 2K 2K 166960K 113 0 sysctl 1 1K 9K 166960K 7 0 counters 66 36K 37K 166960K 114 0 ioctlops 0 0K 4K 166960K 1618 0 iov 0 0K 16K 166960K 19 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1288 81K 82K 166960K 1770 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 16 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 504 0 sigio 0 0K 0K 166960K 101 0 proc 72 115K 164K 166960K 583 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 44 0 in_multi 77 5K 7K 166960K 118 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 19 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 425 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 252 163K 186K 166960K 6385 0 UVM aobj 11 6K 6K 166960K 13 0 pinsyscall 43 86K 108K 166960K 1662 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 35 0 NDP 10 0K 2K 166960K 42 0 temp 45 9072K 9138K 166960K 26243 0 kqueue 13 20K 35K 166960K 132 0 SYN cache 2 8K 16K 166960K 3 0 ddb{1}> 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 50 0 47 1 0 1 1 0 8 0 rtentry 176 124 0 46 7 1 6 6 0 8 0 unpcb 144 199 0 182 2 0 2 2 0 8 1 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpcb 736 110 0 106 1 0 1 1 0 8 0 arp 136 19 0 5 1 0 1 1 0 8 0 inpcb 328 499 0 490 8 1 7 7 0 8 6 nd6 152 24 0 6 1 0 1 1 0 8 0 pkpcb 40 2 0 2 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 14 0 14 2 1 1 1 0 8 1 pppxif 1504 5 0 5 2 1 1 1 0 8 1 pffrag 232 35 0 33 1 0 1 1 0 482 0 pffrnode 88 34 0 32 1 0 1 1 0 8 0 pffrent 40 70 0 67 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 pfstitem 24 38 0 1 1 0 1 1 0 8 0 pfstkey 128 38 0 1 2 0 2 2 0 8 0 pfstate 448 38 0 1 5 0 5 5 0 8 0 pfrule 1360 24 0 19 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 552 0 216 31 1 30 31 0 8 5 art_table 40 555 0 216 5 0 5 5 0 8 0 art_node 32 124 0 54 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 8 2 1 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 12 0 2 1 0 1 1 0 8 0 shmpl 112 8 0 2 1 0 1 1 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 2426 0 965 92 0 92 92 0 8 0 ffsino 296 2426 0 965 114 0 114 114 0 8 0 nchpl 144 3123 0 1415 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 2640 0 0 147 0 147 147 0 8 0 namei 1024 10266 0 10266 3 2 1 2 0 8 1 percpumem 16 72 0 24 1 0 1 1 0 8 0 vcpupl 3968 2 0 0 1 0 1 1 0 8 0 vmpool 848 2 0 0 1 0 1 1 0 8 0 kstatmem 264 54 0 32 4 1 3 3 0 8 1 scsiplug 72 6 0 6 1 0 1 1 0 8 1 scxspl 216 11123 0 11123 11 3 8 8 1 8 8 plimitpl 152 169 0 150 1 0 1 1 0 8 0 sigapl 424 816 0 763 9 2 7 7 0 8 0 knotepl 120 556 0 0 17 0 17 17 0 8 0 kqueuepl 224 239 0 230 5 0 5 5 0 8 4 pipepl 344 191 0 164 6 0 6 6 0 8 3 fdescpl 528 794 0 762 3 0 3 3 0 8 0 filepl 160 4490 0 4233 18 2 16 16 0 8 5 lockfpl 104 318 0 313 2 0 2 2 0 8 1 lockfspl 48 70 0 67 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 71 0 54 1 0 1 1 0 8 0 ucredpl 104 930 0 916 1 0 1 1 0 8 0 zombiepl 144 767 0 763 1 0 1 1 0 8 0 processpl 1232 816 0 763 6 1 5 5 0 8 0 procpl 664 1473 0 1415 8 2 6 6 0 8 0 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 752 759 0 730 11 1 10 10 0 8 7 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 123 0 0 16 0 16 16 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 1158 0 0 73 0 73 73 0 8 0 bufpl 280 3781 0 108 263 0 263 263 0 8 0 anonpl 32 6067 0 0 49 0 49 49 0 246 0 amapchunkpl 152 19771 0 19231 30 2 28 28 0 158 5 amappl16 200 2322 0 2288 7 2 5 5 0 8 1 amappl15 192 15 0 15 1 1 0 1 0 8 0 amappl14 184 429 0 428 1 0 1 1 0 8 0 amappl13 176 128 0 116 1 0 1 1 0 8 0 amappl12 168 1044 0 1013 2 0 2 2 0 8 0 amappl11 160 9 0 9 1 1 0 1 0 8 0 amappl10 152 69 0 54 1 0 1 1 0 8 0 amappl9 144 267 0 267 1 1 0 1 0 8 0 amappl8 136 101 0 98 1 0 1 1 0 8 0 amappl7 128 153 0 139 1 0 1 1 0 8 0 amappl6 120 162 0 161 1 0 1 1 0 8 0 amappl5 112 101 0 89 1 0 1 1 0 8 0 amappl4 104 312 0 291 1 0 1 1 0 8 0 amappl3 96 3567 0 3461 3 0 3 3 0 8 0 amappl2 88 949 0 871 3 0 3 3 0 8 1 amappl1 80 12452 0 11835 19 2 17 17 0 8 2 amappl 88 5575 0 5395 5 0 5 5 0 92 0 uvmvnodes 80 112 0 0 3 0 3 3 0 8 0 dma65536 65536 1 0 1 1 1 0 1 0 8 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 128 257 0 257 2 1 1 1 0 8 1 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 12 0 2 1 0 1 1 0 8 0 uaddrrnd 24 794 0 762 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 794 0 762 1 0 1 1 0 8 0 vmmpekpl 168 8951 0 8909 3 0 3 3 0 8 0 vmmpepl 168 59713 0 57712 101 1 100 100 0 357 6 vmsppl 488 793 0 762 6 1 5 5 0 8 0 rwobjpl 80 19417 0 18330 28 1 27 27 0 8 1 pdppl 4096 1599 0 1526 114 37 77 85 0 8 4 pvpl 32 12709 0 0 103 0 103 103 0 265 0 pmappl 256 795 0 762 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 357 0 45 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83887ff0) 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 end of kernel end trace frame: 0x736a04838c80, count: 12 ddb{0}> trace x86_ipi_db(ffffffff83887ff0) 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 end of kernel end trace frame: 0x736a04838c80, count: -3 ddb{0}> machine ddbcpu 1 Stopped at witness_checkorder+0xb5: movl 0x20(%r14),%r15d witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x95 sys/kern/kern_lock.c:406 clockintr_unbind(ffff80000002c730,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001676000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,2,2000,ffff80003c3e1260) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,2,2000,ffff80003c3e1260) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c445bc0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f0ac2a0,2,fffffd80097fd6e8,ffff80003c3e1260) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806bd6c4a0,ffff80003c3e1260) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bd6c4a0,ffff80003c3e1260) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806bd6c4a0,ffff80003c3e1260) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806bd6c4a0,ffff80003c3e1260) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c3e1260) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff80003c3e1260,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c3e1260,ffff80003c445f30,ffff80003c445e80) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c445f30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c445f30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 end trace frame: 0xffff80003c445fb0, count: 0 ddb{1}> trace witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x95 sys/kern/kern_lock.c:406 clockintr_unbind(ffff80000002c730,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001676000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,2,2000,ffff80003c3e1260) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,2,2000,ffff80003c3e1260) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c445bc0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f0ac2a0,2,fffffd80097fd6e8,ffff80003c3e1260) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806bd6c4a0,ffff80003c3e1260) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bd6c4a0,ffff80003c3e1260) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806bd6c4a0,ffff80003c3e1260) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806bd6c4a0,ffff80003c3e1260) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c3e1260) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff80003c3e1260,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c3e1260,ffff80003c445f30,ffff80003c445e80) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c445f30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c445f30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e3f047f7b30, count: -15