./file0./file0/dev/bpf XVpanic: kernel diagnostic assertion "refs != ~0" failed: file "/syzkaller/managers/main/kernel/sys/kern/kern_synch.c", line 955 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8348291a) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff834c36f1,ffffffff83521b8e,3bb,ffffffff834fafbd) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80003c98f1d0,ffffffff83477ee6) at refcnt_finalize+0x1c8 sys/kern/kern_synch.c:956 pppx_if_destroy(205b92,ffff80003c98f1c8) at pppx_if_destroy+0x3d sys/net/if_pppx.c:794 pppxclose(205b92,3,2000,ffff80002f0b1770) at pppxclose+0xa0 sys/net/if_pppx.c:541 spec_close(ffff80003c989b70) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806d5b8118,3,fffffd8007ffd4e0,ffff80002f0b1770) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd807c7c0268,ffff80002f0b1770) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd807c7c0268,ffff80002f0b1770) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621 fdrop(fffffd807c7c0268,ffff80002f0b1770) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd807c7c0268,ffff80002f0b1770) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80002f0b1770) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80002f0b1770,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002f0b1770,ffff80003c989ed0,ffff80003c989e20) at sys_exit+0x1a sys/kern/kern_exit.c:-1 end trace frame: 0xffff80003c989ec0, 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 "refs != ~0" failed: file "/syzkaller/managers/main/kernel/sys/kern/kern_synch.c", line 955 ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8348291a) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff834c36f1,ffffffff83521b8e,3bb,ffffffff834fafbd) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80003c98f1d0,ffffffff83477ee6) at refcnt_finalize+0x1c8 sys/kern/kern_synch.c:956 pppx_if_destroy(205b92,ffff80003c98f1c8) at pppx_if_destroy+0x3d sys/net/if_pppx.c:794 pppxclose(205b92,3,2000,ffff80002f0b1770) at pppxclose+0xa0 sys/net/if_pppx.c:541 spec_close(ffff80003c989b70) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806d5b8118,3,fffffd8007ffd4e0,ffff80002f0b1770) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd807c7c0268,ffff80002f0b1770) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd807c7c0268,ffff80002f0b1770) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621 fdrop(fffffd807c7c0268,ffff80002f0b1770) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd807c7c0268,ffff80002f0b1770) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80002f0b1770) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80002f0b1770,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002f0b1770,ffff80003c989ed0,ffff80003c989e20) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c989ed0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c989ed0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72c6929b3a30, count: -16 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80003c989950 rbx 0 rdx 0 rcx 0 rax 0xffff80002f0b1770 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa7f5627c975197cf r11 0xeaea31d6abf07220 r12 0 r13 0 r14 0 r15 0x1 rip 0xffffffff824fddd5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c989940 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=148452 pid=86349 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=63, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002f0b1770 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002f0b0548,0xffff80003c944d30 process=0xffff80003c94ed20 user=0xffff80003c984000, vmspace=0xfffffd806cacbb90 estcpu=13, cpticks=2, pctcpu=0.1, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 115 221948 86301 0 2 0 syz-executor 115 180094 86301 0 3 0x4000000 smrbar syz-executor 76793 365829 1 0 3 0x82 nanoslp getty 26745 233414 10121 0 2 0x1 syz-executor 26745 257006 10121 0 3 0x4000081 netcon syz-executor 26745 231621 10121 0 3 0x4000081 fsleep syz-executor 35109 403079 91985 0 2 0 syz-executor 35109 49678 91985 0 3 0x4000080 fifor syz-executor 35109 456841 91985 0 3 0x4000080 fsleep syz-executor 10801 439033 24219 60929 2 0x10 syz-executor 10801 206011 24219 60929 3 0x4000090 fsleep syz-executor 10801 35935 24219 60929 3 0x4000090 fsleep syz-executor 10801 49081 24219 60929 3 0x4000090 fsleep syz-executor 81936 362754 5215 0 3 0x80 nanoslp syz-executor 81936 377960 5215 0 3 0x4000080 ttyout syz-executor 51292 48747 0 0 3 0x14280 nfsidl nfsio 10821 255649 0 0 3 0x14280 nfsidl nfsio 72696 298644 0 0 3 0x14280 nfsidl nfsio 9500 263892 0 0 3 0x14280 nfsidl nfsio 26794 70554 0 0 3 0x14280 nfsidl nfsio 69780 202722 0 0 3 0x14280 nfsidl nfsio 59510 398420 0 0 3 0x14280 nfsidl nfsio 84262 56182 0 0 3 0x14280 nfsidl nfsio 46694 29682 0 0 3 0x14280 nfsidl nfsio 366 34260 0 0 3 0x14280 nfsidl nfsio 6303 132892 0 0 3 0x14280 nfsidl nfsio 40164 325027 0 0 3 0x14280 nfsidl nfsio 86986 65011 0 0 3 0x14280 nfsidl nfsio 34215 509841 0 0 3 0x14280 nfsidl nfsio 99003 460819 0 0 3 0x14280 nfsidl nfsio 98019 264934 0 0 3 0x14280 nfsidl nfsio 58966 251747 0 0 3 0x14280 nfsidl nfsio 70072 205288 0 0 3 0x14280 nfsidl nfsio 93450 170235 0 0 3 0x14280 nfsidl nfsio 56543 323763 0 0 3 0x14280 nfsidl nfsio 5215 152347 71076 0 3 0x82 nanoslp syz-executor 91985 383567 71076 0 3 0x82 nanoslp syz-executor 10121 247619 71076 0 3 0x82 nanoslp syz-executor 29664 395267 71076 0 3 0x82 nanoslp syz-executor 24219 23119 71076 0 3 0x82 nanoslp syz-executor 64742 148196 71076 0 2 0x2 syz-executor 86301 441229 71076 0 2 0xc82 syz-executor 6174 305038 71076 0 2 0x2 syz-executor 71076 499679 50614 0 3 0x82 kqread syz-executor 50614 501339 1 0 3 0x100082 nanoslp ksh 75966 344075 1 0 3 0x1000008a kqread sshd 36433 123804 21601 73 3 0x1100090 kqread syslogd 21601 49192 1 0 3 0x100082 sbwait syslogd 6373 474926 1 0 3 0x100080 kqread resolvd 44551 325481 23326 77 3 0x100092 kqread dhcpleased 60908 488864 23326 77 3 0x100092 kqread dhcpleased 23326 424919 1 0 3 0x80 kqread dhcpleased 48776 153371 0 0 3 0x14200 bored smr 76815 505066 0 0 2 0x14200 zerothread 35781 478548 0 0 3 0x14200 aiodoned aiodoned 41973 173937 0 0 3 0x14200 syncer update 4910 111072 0 0 3 0x14200 cleaner cleaner 51213 473639 0 0 3 0x14200 reaper reaper 1949 21782 0 0 3 0x14200 pgdaemon pagedaemon 57872 347561 0 0 3 0x14200 bored viomb 70518 466864 0 0 3 0x40014200 acpi0 acpi0 40709 513635 0 0 2 0x14200 softnet0 7885 23296 0 0 3 0x14200 bored systqmp 61498 26047 0 0 3 0x14200 bored systq 89850 417328 0 0 3 0x40014200 tmoslp softclock 77847 67749 0 0 3 0x40014200 idle0 1 113945 0 0 3 0x82 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 11047 12248K 12445K 166960K 12375 0 pcb 17 16K 18K 166960K 140 0 rtable 248 8K 8K 166960K 411 0 pf 39 15K 73K 166960K 57 0 ifaddr 45 7K 7K 166960K 53 0 ifgroup 55 2K 2K 166960K 66 0 sysctl 4 1K 9K 166960K 8 0 counters 35 18K 18K 166960K 42 0 ioctlops 0 0K 4K 166960K 107 0 iov 0 0K 24K 166960K 16 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1323 83K 83K 166960K 1605 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 18 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 232K 166960K 399 0 proc 60 59K 108K 166960K 527 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 42 0 in_multi 96 7K 7K 166960K 121 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 14 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 384 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 206 150K 173K 166960K 5043 0 UVM aobj 12 2K 2K 166960K 14 0 pinsyscall 33 66K 96K 166960K 1503 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 12 0 NDP 12 0K 2K 166960K 33 0 temp 43 9104K 9178K 166960K 20104 0 kqueue 11 16K 31K 166960K 69 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 50 0 47 1 0 1 1 0 8 0 rtentry 136 124 0 14 4 0 4 4 0 8 0 unpcb 144 146 0 129 1 0 1 1 0 8 0 syncache 336 8 0 8 1 0 1 1 0 8 1 tcpcb 736 216 0 209 7 0 7 7 0 8 6 arp 96 19 0 1 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 328 622 0 611 12 2 10 12 0 8 8 ip6q 72 2 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 0 1 0 1 1 0 8 0 nd6 112 25 0 3 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 7 0 6 1 0 1 1 0 8 0 pppxif 1416 1 0 0 1 0 1 1 0 8 0 pfstscr 40 5 0 4 1 0 1 1 0 8 0 pfsrclim 320 1 0 1 1 0 1 1 0 8 1 pfqueue 320 1 0 1 1 0 1 1 0 8 1 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 128 8 0 4 1 0 1 1 0 8 0 pfstate 384 4 0 2 1 0 1 1 0 8 0 pfrule 1360 7 0 5 1 0 1 1 0 8 0 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 548 0 73 32 0 32 32 0 8 2 art_table 40 550 0 73 6 0 6 6 0 8 1 art_node 32 123 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 4 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 72 13 0 4 1 0 1 1 0 8 0 shmpl 112 11 0 2 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2053 0 597 92 0 92 92 0 8 0 ffsino 256 2053 0 597 92 0 92 92 0 8 0 nchpl 144 2591 0 896 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 2269 0 0 127 0 127 127 0 8 0 namei 1024 8060 0 8060 1 0 1 1 0 8 1 kstatmem 264 33 0 8 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 8395 0 8395 3 0 3 3 1 8 3 plimitpl 152 51 0 34 1 0 1 1 0 8 0 sigapl 424 705 0 645 8 0 8 8 0 8 0 knotepl 120 14296 0 14254 10 0 10 10 0 8 8 kqueuepl 184 89 0 82 1 0 1 1 0 8 0 pipepl 304 141 0 114 3 0 3 3 0 8 0 fdescpl 448 672 0 646 5 0 5 5 0 8 1 filepl 120 3412 0 3200 12 0 12 12 0 8 5 lockfpl 104 364 0 362 4 0 4 4 0 8 3 lockfspl 48 45 0 43 1 0 1 1 0 8 0 sessionpl 144 30 0 22 1 0 1 1 0 8 0 pgrppl 48 41 0 25 1 0 1 1 0 8 0 ucredpl 104 458 0 446 1 0 1 1 0 8 0 zombiepl 144 647 0 645 1 0 1 1 0 8 0 processpl 1152 705 0 645 5 0 5 5 0 8 0 procpl 664 1103 0 1034 7 0 7 7 0 8 0 sockpl 552 823 0 792 13 2 11 13 0 8 8 mcl64k 65536 52 0 51 1 0 1 1 0 8 0 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 2851 0 2798 13 0 13 13 0 8 6 mcl2k 2048 375 0 375 9 1 8 9 0 8 8 mtagpl 96 8 0 7 1 0 1 1 0 8 0 mbufpl 256 7168 0 6995 24 3 21 24 0 8 8 bufpl 280 2888 0 106 199 0 199 199 0 8 0 anonpl 24 106195 0 103403 32 0 32 32 0 186 10 amapchunkpl 152 15445 0 15002 27 0 27 27 0 158 7 amappl16 200 1614 0 1585 4 0 4 4 0 8 2 amappl15 192 8 0 8 1 0 1 1 0 8 1 amappl14 184 411 0 410 1 0 1 1 0 8 0 amappl13 176 118 0 110 1 0 1 1 0 8 0 amappl12 168 912 0 887 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 0 1 1 0 8 1 amappl10 152 59 0 48 1 0 1 1 0 8 0 amappl9 144 331 0 331 1 0 1 1 0 8 1 amappl8 136 99 0 98 1 0 1 1 0 8 0 amappl7 128 140 0 130 1 0 1 1 0 8 0 amappl6 120 148 0 147 1 0 1 1 0 8 0 amappl5 112 95 0 89 1 0 1 1 0 8 0 amappl4 104 286 0 271 1 0 1 1 0 8 0 amappl3 96 3067 0 2962 3 0 3 3 0 8 0 amappl2 88 582 0 536 2 0 2 2 0 8 0 amappl1 80 11584 0 11199 12 0 12 12 0 8 3 amappl 88 4299 0 4150 5 0 5 5 0 92 1 uvmvnodes 80 105 0 0 3 0 3 3 0 8 0 dma8192 8192 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 3 0 2 1 0 1 1 0 8 0 dma256 256 7 0 7 1 0 1 1 0 8 1 dma128 128 254 0 254 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 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 24 672 0 646 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 672 0 646 1 0 1 1 0 8 0 vmmpekpl 168 7321 0 7288 2 0 2 2 0 8 0 vmmpepl 168 50907 0 49451 81 0 81 81 0 357 11 vmsppl 368 671 0 646 4 0 4 4 0 8 1 rwobjpl 40 16971 0 16128 11 0 11 11 0 8 0 pdppl 4096 1350 0 1292 96 30 66 82 0 8 8 pvpl 32 290820 0 283404 91 0 91 91 0 265 13 pmappl 216 671 0 646 3 0 3 3 0 8 1 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 388 0 34 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8348291a) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff834c36f1,ffffffff83521b8e,3bb,ffffffff834fafbd) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80003c98f1d0,ffffffff83477ee6) at refcnt_finalize+0x1c8 sys/kern/kern_synch.c:956 pppx_if_destroy(205b92,ffff80003c98f1c8) at pppx_if_destroy+0x3d sys/net/if_pppx.c:794 pppxclose(205b92,3,2000,ffff80002f0b1770) at pppxclose+0xa0 sys/net/if_pppx.c:541 spec_close(ffff80003c989b70) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806d5b8118,3,fffffd8007ffd4e0,ffff80002f0b1770) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd807c7c0268,ffff80002f0b1770) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd807c7c0268,ffff80002f0b1770) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621 fdrop(fffffd807c7c0268,ffff80002f0b1770) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd807c7c0268,ffff80002f0b1770) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80002f0b1770) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80002f0b1770,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002f0b1770,ffff80003c989ed0,ffff80003c989e20) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c989ed0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c989ed0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72c6929b3a30, count: -16 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8348291a) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff834c36f1,ffffffff83521b8e,3bb,ffffffff834fafbd) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80003c98f1d0,ffffffff83477ee6) at refcnt_finalize+0x1c8 sys/kern/kern_synch.c:956 pppx_if_destroy(205b92,ffff80003c98f1c8) at pppx_if_destroy+0x3d sys/net/if_pppx.c:794 pppxclose(205b92,3,2000,ffff80002f0b1770) at pppxclose+0xa0 sys/net/if_pppx.c:541 spec_close(ffff80003c989b70) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806d5b8118,3,fffffd8007ffd4e0,ffff80002f0b1770) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd807c7c0268,ffff80002f0b1770) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd807c7c0268,ffff80002f0b1770) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621 fdrop(fffffd807c7c0268,ffff80002f0b1770) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd807c7c0268,ffff80002f0b1770) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80002f0b1770) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80002f0b1770,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002f0b1770,ffff80003c989ed0,ffff80003c989e20) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c989ed0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c989ed0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72c6929b3a30, count: -16 ddb>