*cpu1: uvm_fault(0xfffffd806c9fe5d8, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x762630800e70, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c4fb200 rbx 0 rdx 0 rcx 0xffff8000393fa028 rax 0x2a r8 0xffff80003c4fb130 r9 0 r10 0xecf3007d82656f34 r11 0x93fbbe87b5ef507a r12 0 r13 0 r14 0 r15 0 rip 0xffffffff827fd4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c4fb180 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=493046 pid=13281 tcnt=1 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000393fba18,0xffffffff838af2b8 process=0xffff8000fffece88 user=0xffff80003c4f6000, vmspace=0xfffffd806c9fe020 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *13281 493046 87605 0 7 0 syz-executor 3009 152726 11078 0 2 0 syz-executor 3009 366355 11078 0 3 0x4000080 fsleep syz-executor 3009 363349 11078 0 3 0x4000080 fsleep syz-executor 3009 177177 11078 0 2 0x4000000 syz-executor 34265 345788 40561 0 2 0 syz-executor 34265 368209 40561 0 3 0x4000080 kqsel syz-executor 48538 391698 28722 0 2 0 syz-executor 48538 440284 28722 0 3 0x4000080 fsleep syz-executor 58490 88971 14799 60929 3 0x90 nanoslp syz-executor 58490 138532 14799 60929 3 0x4000090 lockf syz-executor 58490 263519 14799 60929 3 0x4000090 fsleep syz-executor 58490 66960 14799 60929 3 0x4000090 lockf syz-executor 2409 25429 426 0 3 0x80 nanoslp syz-executor 2409 103703 426 0 3 0x4000080 kqsel syz-executor 2409 177993 426 0 3 0x4000080 fsleep syz-executor 71870 125088 1 0 3 0x100083 ttyopn getty 14799 424198 42460 0 3 0x82 nanoslp syz-executor 11252 486836 0 0 3 0x14280 nfsidl nfsio 38578 521629 0 0 3 0x14280 nfsidl nfsio 72416 416961 0 0 3 0x14280 nfsidl nfsio 91983 289691 0 0 3 0x14280 nfsidl nfsio 7882 298565 0 0 3 0x14280 nfsidl nfsio 35884 164116 0 0 3 0x14280 nfsidl nfsio 10262 297968 0 0 3 0x14280 nfsidl nfsio 17428 190178 0 0 3 0x14280 nfsidl nfsio 9483 128164 0 0 3 0x14280 nfsidl nfsio 77090 72705 0 0 3 0x14280 nfsidl nfsio 4342 137443 0 0 3 0x14280 nfsidl nfsio 11614 251171 0 0 3 0x14280 nfsidl nfsio 74838 446315 0 0 3 0x14280 nfsidl nfsio 10967 153776 0 0 3 0x14280 nfsidl nfsio 68280 132210 0 0 3 0x14280 nfsidl nfsio 73342 157465 0 0 3 0x14280 nfsidl nfsio 6599 123743 0 0 3 0x14280 nfsidl nfsio 50837 150242 0 0 3 0x14280 nfsidl nfsio 19886 369682 0 0 3 0x14280 nfsidl nfsio 58006 209259 0 0 3 0x14280 nfsidl nfsio 9382 330252 0 0 3 0x14200 acct acct 99073 197026 12163 0 3 0x100082 sbwait arp 12163 385257 24208 0 3 0x10008a sigsusp sh 426 512613 42460 0 2 0x2 syz-executor 28722 501770 42460 0 3 0x82 nanoslp syz-executor 87605 184323 42460 0 3 0x82 nanoslp syz-executor 11078 30962 42460 0 3 0x82 nanoslp syz-executor 24208 149172 42460 0 3 0x82 wait syz-executor 94392 506286 42460 0 3 0x82 nanoslp syz-executor 40561 99518 42460 0 3 0x82 nanoslp syz-executor 42460 51011 299 0 2 0x2 syz-executor 299 133169 2674 0 3 0x10008a sigsusp ksh 2674 186635 90208 0 3 0x98 kqread sshd-session 90208 318704 12269 0 3 0x92 kqread sshd-session 12269 328872 1 0 3 0x88 kqread sshd 6826 284255 56247 74 3 0x1100092 bpf pflogd 56247 197408 1 0 3 0x80 sbwait pflogd 79344 400318 77964 73 3 0x1100090 kqread syslogd 77964 269195 1 0 3 0x100082 sbwait syslogd 16164 152913 1 0 3 0x100080 kqread resolvd 27575 132349 42639 77 3 0x100092 kqread dhcpleased 29610 333526 42639 77 3 0x100092 kqread dhcpleased 42639 35489 1 0 3 0x80 kqread dhcpleased 91826 140396 0 0 3 0x14200 bored smr 89913 46641 0 0 2 0x14200 zerothread 15342 146097 0 0 3 0x14200 aiodoned aiodoned 80226 132889 0 0 3 0x14200 syncer update 26391 426229 0 0 3 0x14200 cleaner cleaner 70589 465467 0 0 3 0x14200 reaper reaper 5268 462267 0 0 3 0x14200 pgdaemon pagedaemon 66681 207765 0 0 3 0x14200 bored viomb 46588 472936 0 0 3 0x40014200 acpi0 acpi0 53471 192825 0 0 3 0x40014200 idle1 57151 203068 0 0 3 0x14200 bored softnet1 21869 485200 0 0 3 0x14200 bored softnet0 56486 284784 0 0 3 0x14200 bored systqmp 57669 185248 0 0 3 0x14200 bored systq 3874 231812 0 0 3 0x14200 tmoslp softclockmp 94752 422852 0 0 3 0x40014200 tmoslp softclock 51127 228795 0 0 3 0x40014200 idle0 1 114927 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806cab1410) #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 pmap_extract+0xb1 sys/arch/amd64/amd64/pmap.c:1572 #3 uvm_fault_upper_lookup+0x20b sys/uvm/uvm_fault.c:981 #4 uvm_fault+0x159 sys/uvm/uvm_fault.c:638 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 #7 recall_trap+0x8 Process 13281 (syz-executor) thread 0xffff8000393fa028 (493046) exclusive rwlock amaplk r = 0 (0xfffffd806d2c45f8) #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 uvm_fault_check+0x8bb sys/uvm/uvm_fault.c:840 #3 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #5 usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 #6 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806c9fe120) #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_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1902 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:699 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 #7 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806cab1410) #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 pmap_extract+0xb1 sys/arch/amd64/amd64/pmap.c:1572 #3 uvm_fault_upper_lookup+0x20b sys/uvm/uvm_fault.c:981 #4 uvm_fault+0x159 sys/uvm/uvm_fault.c:638 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 #7 recall_trap+0x8 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10252 11099K 12378K 166960K 12764 0 pcb 18 12K 12K 166960K 156 0 rtable 184 9K 9K 166960K 561 0 pf 39 18K 19K 166960K 147 0 ifaddr 36 5K 7K 166960K 111 0 ifgroup 64 2K 2K 166960K 185 0 sysctl 4 1K 9K 166960K 18 0 counters 72 37K 37K 166960K 206 0 ioctlops 0 0K 4K 166960K 1737 0 iov 0 0K 16K 166960K 85 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1439 90K 91K 166960K 2181 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 14 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 35 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 85K 166960K 1000 0 sigio 0 0K 0K 166960K 87 0 proc 72 115K 163K 166960K 665 0 subproc 72 4K 4K 166960K 82 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 141 0 in_multi 68 5K 6K 166960K 169 0 ether_multi 2 0K 0K 166960K 18 0 mrt 1 0K 0K 166960K 20 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 458 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 255 171K 185K 166960K 10893 0 UVM aobj 35 14K 14K 166960K 37 0 pinsyscall 45 90K 103K 166960K 2145 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 70 0 NDP 14 0K 1K 166960K 74 0 temp 71 8670K 8742K 166960K 43894 0 kqueue 13 20K 28K 166960K 206 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 93 0 89 1 0 1 1 0 8 0 rtentry 176 144 0 74 5 0 5 5 0 8 0 unpcb 144 698 0 679 6 0 6 6 0 8 5 syncache 336 7 0 7 2 1 1 1 0 8 1 tcpqe 32 8 0 8 1 1 0 1 0 8 0 tcpcb 736 278 0 273 8 1 7 7 0 8 6 arp 136 19 0 4 1 0 1 1 0 8 0 inpcb 328 812 0 800 7 0 7 7 0 8 5 nd6 152 28 0 11 1 0 1 1 0 8 0 pkpcb 40 5 0 5 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 55 0 55 1 0 1 1 0 8 1 pppxif 1504 6 0 6 1 0 1 1 0 8 1 pffrag 232 8 0 2 1 0 1 1 0 482 0 pffrnode 88 8 0 2 1 0 1 1 0 8 0 pffrent 40 11 0 5 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 73 0 12 1 0 1 1 0 8 0 pfstkey 128 73 0 12 2 0 2 2 0 8 0 pfstate 448 73 0 12 7 0 7 7 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 6 0 6 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 820 0 507 28 1 27 27 0 8 3 art_table 40 821 0 507 5 0 5 5 0 8 0 art_node 32 143 0 79 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 10 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 32 0 22 1 0 1 1 0 8 0 shmpl 112 27 0 1 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3347 0 1839 95 0 95 95 0 8 0 ffsino 296 3347 0 1839 117 0 117 117 0 8 0 nchpl 144 4773 0 3068 64 0 64 64 0 8 0 rtmask 32 12 0 12 1 0 1 1 0 8 1 vnodes 216 3820 0 0 213 0 213 213 0 8 0 namei 1024 16990 0 16990 2 1 1 2 0 8 1 percpumem 16 118 0 67 1 0 1 1 0 8 0 vcpupl 3968 6 0 0 1 0 1 1 0 8 0 vmpool 840 7 0 1 1 0 1 1 0 8 0 kstatmem 264 120 0 88 4 1 3 3 0 8 0 scsiplug 72 7 0 7 1 0 1 1 0 8 1 scxspl 216 19225 0 19225 10 8 2 8 1 8 2 plimitpl 152 431 0 413 1 0 1 1 0 8 0 sigapl 424 1328 0 1258 8 0 8 8 0 8 0 knotepl 120 547 0 0 17 0 17 17 0 8 0 kqueuepl 224 332 0 321 1 0 1 1 0 8 0 pipepl 344 239 0 211 3 0 3 3 0 8 0 fdescpl 528 1291 0 1258 3 0 3 3 0 8 0 filepl 160 8045 0 7817 19 4 15 19 0 8 4 lockfpl 104 519 0 513 3 2 1 3 0 8 0 lockfspl 48 203 0 200 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 43 0 26 1 0 1 1 0 8 0 ucredpl 104 1595 0 1580 1 0 1 1 0 8 0 zombiepl 144 1259 0 1258 1 0 1 1 0 8 0 processpl 1232 1328 0 1258 6 0 6 6 0 8 0 procpl 664 2849 0 2769 8 0 8 8 0 8 0 sockpl 752 1636 0 1601 16 5 11 16 0 8 7 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 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 126 0 0 16 0 16 16 0 8 0 mcl2k 2048 48 0 0 6 0 6 6 0 8 0 mtagpl 96 84 0 0 3 0 3 3 0 8 0 mbufpl 256 1244 0 0 78 0 78 78 0 8 0 bufpl 280 6526 0 389 439 0 439 439 0 8 0 anonpl 32 9572 0 0 78 0 78 78 0 246 0 amapchunkpl 152 36034 0 35488 35 0 35 35 0 158 8 amappl16 200 3038 0 2980 22 7 15 17 0 8 8 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 10 0 9 2 1 1 1 0 8 0 amappl13 176 432 0 430 1 0 1 1 0 8 0 amappl12 168 1667 0 1623 3 0 3 3 0 8 0 amappl11 160 8 0 8 1 1 0 1 0 8 0 amappl10 152 53 0 39 1 0 1 1 0 8 0 amappl9 144 260 0 260 1 1 0 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 80 0 78 1 0 1 1 0 8 0 amappl6 120 281 0 266 1 0 1 1 0 8 0 amappl5 112 77 0 66 1 0 1 1 0 8 0 amappl4 104 413 0 381 1 0 1 1 0 8 0 amappl3 96 6338 0 6250 5 2 3 4 0 8 0 amappl2 88 1410 0 1329 2 0 2 2 0 8 0 amappl1 80 12571 0 11957 15 0 15 15 0 8 0 amappl 88 9995 0 9825 5 0 5 5 0 92 0 uvmvnodes 80 139 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 128 254 0 254 2 2 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 36 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1291 0 1258 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1291 0 1258 1 0 1 1 0 8 0 vmmpekpl 168 11900 0 11852 3 0 3 3 0 8 0 vmmpepl 168 85927 0 83900 102 0 102 102 0 357 9 vmsppl 488 1290 0 1258 5 0 5 5 0 8 0 rwobjpl 80 23633 0 22461 30 0 30 30 0 8 1 pdppl 4096 2603 0 2524 100 21 79 81 0 8 0 pvpl 32 17818 0 0 145 1 144 144 0 265 0 pmappl 256 1297 0 1259 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 355 0 27 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x762630800e70, count: -1 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 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+0x76 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x76 sys/dev/acpi/acpitimer.c:120 comcnputc(800,2d) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(2d) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(2d) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83345714) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83409753) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002ebd1b30,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002ebd1b30) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:510 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff80002ebd1c10, 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 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+0x76 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x76 sys/dev/acpi/acpitimer.c:120 comcnputc(800,2d) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(2d) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(2d) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83345714) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83409753) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002ebd1b30,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002ebd1b30) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:510 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000165d000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80003c46ca98) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c46ca98) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002ebd1ce0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805ebcf450,81,fffffd80097fd478,ffff80003c46ca98) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c322cc0,ffff80003c46ca98) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c322cc0,ffff80003c46ca98) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c322cc0,ffff80003c46ca98) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c322cc0,ffff80003c46ca98) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c46ca98) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c46ca98,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c46ca98,ffff80002ebd2050,ffff80002ebd1fa0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002ebd2050) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ebd2050) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7dc1eff43f10, count: -26