*cpu1: uvm_fault(0xfffffd806c8fc3e8, 0x0, 0, 1) -> e ddb{0}> trace savectx() at savectx+0xae end of kernel end trace frame: 0xfb4b4cbb650, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c46d060 rbx 0 rdx 0xffff80000155f1c0 rcx 0xffff800039801a10 rax 0x33 r8 0xffff80003c46cf90 r9 0 r10 0x1e8622cd61ec1609 r11 0x5c7a57092dc0679 r12 0 r13 0 r14 0xffff800039801a10 r15 0 rip 0xffffffff813163ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80003c46cfe0 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=212643 pid=55239 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000398002b8,0xffffffff839a7750 process=0xffff80003c501d08 user=0xffff80003c468000, vmspace=0xfffffd806c8fc5d0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 55239 249325 23258 0 2 0 syz-executor *55239 212643 23258 0 7 0x4000000 syz-executor 50922 409423 56850 60929 2 0x10 syz-executor 50922 511092 56850 60929 3 0x4000090 msgwait syz-executor 50922 84614 56850 60929 3 0x4000010 smrbar syz-executor 79933 268234 0 0 3 0x14200 acct acct 18412 267232 66228 0 3 0x80 nanoslp syz-executor 18412 484352 66228 0 3 0x4000080 fsleep syz-executor 18412 187225 66228 0 3 0x4000080 ttyout syz-executor 18412 165214 66228 0 3 0x4000080 fsleep syz-executor 24849 263822 44431 0 3 0x3000 suspend syz-executor 24849 388422 44431 0 3 0x4081000 biowait syz-executor 24849 418892 44431 0 3 0x4081000 fltagain2 syz-executor 78751 295538 38239 0 3 0x3000 suspend syz-executor 78751 372630 38239 0 3 0x4081000 biowait syz-executor 78751 348827 38239 0 3 0x4081000 fltagain2 syz-executor 3548 363348 0 0 3 0x14280 nfsidl nfsio 80025 277523 0 0 3 0x14280 nfsidl nfsio 80494 219140 0 0 3 0x14280 nfsidl nfsio 17111 124868 0 0 3 0x14280 nfsidl nfsio 31561 362912 0 0 3 0x14280 nfsidl nfsio 28051 516026 0 0 3 0x14280 nfsidl nfsio 45596 346331 0 0 3 0x14280 nfsidl nfsio 80875 381661 0 0 3 0x14280 nfsidl nfsio 7152 167033 0 0 3 0x14280 nfsidl nfsio 61449 219420 0 0 3 0x14280 nfsidl nfsio 4509 25726 0 0 3 0x14280 nfsidl nfsio 18147 303701 0 0 3 0x14280 nfsidl nfsio 15594 448682 0 0 3 0x14280 nfsidl nfsio 26793 416683 0 0 3 0x14280 nfsidl nfsio 9142 344989 0 0 3 0x14280 nfsidl nfsio 55897 184009 0 0 3 0x14280 nfsidl nfsio 63041 255779 0 0 3 0x14280 nfsidl nfsio 47579 323710 0 0 3 0x14280 nfsidl nfsio 9538 83474 0 0 3 0x14280 nfsidl nfsio 18242 170647 0 0 3 0x14280 nfsidl nfsio 10405 516982 29967 0 3 0x82 nanoslp syz-executor 56850 29927 29967 0 3 0x82 nanoslp syz-executor 33458 94811 29967 0 3 0x82 nanoslp syz-executor 66228 487402 29967 0 3 0x82 nanoslp syz-executor 88626 123988 29967 0 3 0x82 nanoslp syz-executor 38239 192514 29967 0 3 0x82 nanoslp syz-executor 23258 471512 29967 0 3 0x82 nanoslp syz-executor 44431 170725 29967 0 3 0x82 nanoslp syz-executor 29967 262632 17031 0 3 0x82 kqread syz-executor 17031 461640 50853 0 3 0x10008a sigsusp ksh 50853 493994 6580 0 3 0x98 kqread sshd-session 6580 486345 45285 0 3 0x92 kqread sshd-session 11544 148325 1 0 3 0x100083 ttyopn getty 45285 514216 1 0 3 0x88 kqread sshd 806 101802 88861 74 3 0x1100092 bpf pflogd 88861 214978 1 0 3 0x80 sbwait pflogd 48925 84211 9575 73 3 0x1100090 kqread syslogd 9575 47604 1 0 3 0x100082 sbwait syslogd 90585 492562 1 0 3 0x100080 kqread resolvd 88970 175230 6481 77 3 0x100092 kqread dhcpleased 58709 292766 6481 77 3 0x100092 kqread dhcpleased 6481 509081 1 0 3 0x80 kqread dhcpleased 19816 317099 0 0 3 0x14200 bored smr 43413 107182 0 0 3 0x14200 pgzero zerothread 37977 345261 0 0 3 0x14200 aiodoned aiodoned 17293 409363 0 0 3 0x14200 syncer update 14685 346014 0 0 3 0x14200 cleaner cleaner 63863 78832 0 0 3 0x14200 reaper reaper 19507 233944 0 0 3 0x14200 pgdaemon pagedaemon 73087 53261 0 0 3 0x14200 bored viomb 46458 134378 0 0 3 0x40014200 acpi0 acpi0 5336 138699 0 0 3 0x40014200 idle1 7037 483442 0 0 3 0x14200 bored softnet1 31496 34704 0 0 3 0x14200 bored softnet0 88459 377649 0 0 3 0x14200 bored systqmp 12594 472104 0 0 3 0x14200 bored systq 64115 276680 0 0 3 0x14200 tmoslp softclockmp 62466 146601 0 0 3 0x40014200 tmoslp softclock 37304 5337 0 0 3 0x40014200 idle0 1 292161 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &kq->kq_lock r = 0 (0xfffffd80759c5b70) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 kqueue_register+0xda6 sys/kern/kern_event.c:1519 #3 pselregister+0x135 sys/kern/sys_generic.c:760 #4 dopselect+0x456 sys/kern/sys_generic.c:653 #5 sys_select+0x1d1 sys/kern/sys_generic.c:552 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #7 Xsyscall+0x128 Process 24849 (syz-executor) thread 0xffff80003c4262d0 (388422) exclusive rrwlock inode r = 0 (0xfffffd806e7c9a60) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 78751 (syz-executor) thread 0xffff80003c426038 (372630) exclusive rrwlock inode r = 0 (0xfffffd8067112a20) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11081 12152K 15879K 166960K 13224 0 pcb 19 12K 12K 166960K 81 0 rtable 227 8K 9K 166960K 406 0 pf 43 19K 19K 166960K 81 0 ifaddr 46 8K 8K 166960K 68 0 ifgroup 62 2K 2K 166960K 100 0 sysctl 3 1K 9K 166960K 7 0 counters 76 37K 38K 166960K 118 0 ioctlops 0 0K 4K 166960K 1591 0 iov 1 12K 16K 166960K 19 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1541 97K 97K 166960K 1813 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 17 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 465 0 sigio 0 0K 0K 166960K 8 0 proc 75 131K 147K 166960K 573 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 59 0 in_multi 100 7K 7K 166960K 124 0 ether_multi 2 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 5 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 475 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 270 168K 177K 166960K 6176 0 UVM aobj 12 8K 8K 166960K 14 0 pinsyscall 43 86K 104K 166960K 1589 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 36 0 NDP 14 0K 2K 166960K 44 0 temp 48 8673K 8740K 166960K 21112 0 kqueue 16 26K 30K 166960K 92 0 SYN cache 2 16K 16K 166960K 2 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 56 0 53 1 0 1 1 0 8 0 rtentry 176 120 0 22 6 0 6 6 0 8 0 unpcb 144 190 0 173 1 0 1 1 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpcb 736 167 0 162 8 6 2 7 0 8 1 arp 136 18 0 2 1 0 1 1 0 8 0 inpcb 328 436 0 426 8 5 3 7 0 8 2 nd6 152 26 0 0 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 19 0 17 2 1 1 1 0 8 0 pppxif 1504 4 0 3 2 1 1 1 0 8 0 pfstscr 40 68 0 68 2 1 1 1 0 8 1 pffrag 232 2 0 1 2 1 1 1 0 482 0 pffrnode 88 2 0 1 2 1 1 1 0 8 0 pffrent 40 4 0 3 2 1 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 1 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 36 0 34 2 1 1 1 0 8 0 pfstate 448 35 0 34 2 1 1 1 0 8 0 pfrule 1360 1 0 0 1 0 1 1 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 532 0 106 31 0 31 31 0 8 2 art_table 40 534 0 106 5 0 5 5 0 8 0 art_node 32 120 0 33 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 14 0 4 1 0 1 1 0 8 0 shmpl 112 7 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2227 0 711 96 0 96 96 0 8 0 ffsino 296 2227 0 711 117 0 117 117 0 8 0 nchpl 144 2883 0 1175 64 0 64 64 0 8 0 rtmask 32 4 0 4 1 0 1 1 0 8 1 vnodes 216 2620 0 0 146 0 146 146 0 8 0 namei 1024 9177 0 9177 2 1 1 2 0 8 1 percpumem 16 74 0 21 1 0 1 1 0 8 0 vcpupl 3968 3 0 0 1 0 1 1 0 8 0 vmpool 848 4 0 1 1 0 1 1 0 8 0 kstatmem 264 56 0 26 4 1 3 3 0 8 1 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 13896 0 13894 11 8 3 8 1 8 2 plimitpl 152 123 0 103 1 0 1 1 0 8 0 sigapl 424 794 0 725 8 0 8 8 0 8 0 knotepl 120 506 0 0 16 0 16 16 0 8 0 kqueuepl 224 198 0 183 5 2 3 5 0 8 2 pipepl 344 150 0 121 3 0 3 3 0 8 0 fdescpl 528 757 0 725 3 0 3 3 0 8 0 filepl 160 3969 0 3733 23 8 15 18 0 8 5 lockfpl 104 373 0 371 3 2 1 2 0 8 0 lockfspl 48 180 0 178 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 36 0 19 1 0 1 1 0 8 0 ucredpl 104 469 0 454 1 0 1 1 0 8 0 zombiepl 144 730 0 725 1 0 1 1 0 8 0 processpl 1232 794 0 725 6 0 6 6 0 8 0 procpl 664 1395 0 1316 8 0 8 8 0 8 0 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 752 692 0 662 11 6 5 10 0 8 1 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 16 0 16 16 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 151 0 0 10 0 10 10 0 8 0 bufpl 280 5504 0 131 384 0 384 384 0 8 0 anonpl 32 7605 0 0 63 1 62 63 0 246 0 amapchunkpl 152 19269 0 18700 33 6 27 28 0 158 0 amappl16 200 3143 0 2861 24 9 15 15 0 8 0 amappl15 192 12 0 12 1 1 0 1 0 8 0 amappl14 184 5 0 5 1 1 0 1 0 8 0 amappl13 176 439 0 437 1 0 1 1 0 8 0 amappl12 168 1114 0 1071 3 0 3 3 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 95 0 81 1 0 1 1 0 8 0 amappl9 144 260 0 260 1 1 0 1 0 8 0 amappl8 136 25 0 23 1 0 1 1 0 8 0 amappl7 128 78 0 77 1 0 1 1 0 8 0 amappl6 120 366 0 352 1 0 1 1 0 8 0 amappl5 112 73 0 63 1 0 1 1 0 8 0 amappl4 104 411 0 382 1 0 1 1 0 8 0 amappl3 96 3242 0 3131 4 1 3 3 0 8 0 amappl2 88 870 0 791 2 0 2 2 0 8 0 amappl1 80 10378 0 9779 15 2 13 15 0 8 0 amappl 88 5389 0 5199 5 0 5 5 0 92 0 uvmvnodes 80 110 0 0 3 0 3 3 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 128 255 0 255 3 2 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 13 0 2 1 0 1 1 0 8 0 uaddrrnd 24 757 0 725 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 757 0 725 1 0 1 1 0 8 0 vmmpekpl 168 7819 0 7777 2 0 2 2 0 8 0 vmmpepl 168 55339 0 53083 109 10 99 99 0 357 0 vmsppl 488 756 0 725 5 1 4 5 0 8 0 rwobjpl 80 18061 0 16728 29 1 28 28 0 8 0 pdppl 4096 1530 0 1455 102 26 76 86 0 8 1 pvpl 32 16079 0 0 131 1 130 131 0 265 0 pmappl 256 760 0 726 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 285 0 37 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace savectx() at savectx+0xae end of kernel end trace frame: 0xfb4b4cbb650, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) 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 x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:682 acpitimer_delay(1) at acpitimer_delay+0x194 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x194 sys/dev/acpi/acpitimer.c:125 comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(66) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(66) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff833a30f7) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff8000367e5990) at db_ktrap+0x1b6 db_printtrap sys/arch/amd64/amd64/db_interface.c:103 [inline] db_ktrap(6,0,ffff8000367e5990) at db_ktrap+0x1b6 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff8000367e5990) at kerntrap+0x242 sys/arch/amd64/amd64/trap.c:511 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff8000015f6000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 end trace frame: 0xffff8000367e5ac0, count: 0 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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 x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:682 acpitimer_delay(1) at acpitimer_delay+0x194 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x194 sys/dev/acpi/acpitimer.c:125 comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(66) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(66) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff833a30f7) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff8000367e5990) at db_ktrap+0x1b6 db_printtrap sys/arch/amd64/amd64/db_interface.c:103 [inline] db_ktrap(6,0,ffff8000367e5990) at db_ktrap+0x1b6 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff8000367e5990) at kerntrap+0x242 sys/arch/amd64/amd64/trap.c:511 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff8000015f6000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,1,2000,ffff800039800fb0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff800039800fb0) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000367e5b40) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805ab3c370,1,fffffd80097fd618,ffff800039800fb0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8067332360,ffff800039800fb0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8067332360,ffff800039800fb0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8067332360,ffff800039800fb0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8067332360,ffff800039800fb0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800039800fb0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800039800fb0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800039800fb0,ffff8000367e5eb0,ffff8000367e5e00) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000367e5eb0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000367e5eb0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c42bcecba00, count: -25