kernel: integer divide fault trap, code=0 Stopped at rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace rc4_keysetup(ffff80002131e2fa,ffff80002131e40c,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff80002131e2c0,ffffcd21,4f68,ffff8000006d1e6c,ffffcd21) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff800023368568,ffff8000006d1c00) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff800023368568,ffff8000006d1c00) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff8000006d1c00,1,ffff80002961b510) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086334,82907003,ffff8000006d1c00,1,ffff80002961b510) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd805cc8d950,82907003,ffff8000006d1c00,1,fffffd807f7d7548,ffff80002961b510) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067991268,82907003,ffff8000006d1c00,ffff80002961b510) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002961b510,ffff8000233688b8,ffff800023368900) at sys_ioctl+0x4a2 syscall(ffff800023368980) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800023368980) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x19c6070a740, count: -9 ddb{0}> show registers rdi 0xffff800023769000 rsi 0 rbp 0xffff8000233683f0 rbx 0 rdx 0 rcx 0 rax 0x1 r8 0x60 r9 0x2f2d33bf r10 0xd47b0fdd20b4014f r11 0xde2c59461a209196 r12 0xffff80002131e40c r13 0 r14 0xffff80002131e2fa r15 0 rip 0xffffffff81770f1f rc4_keysetup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023368390 ss 0x10 rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb{0}> show proc PROC (syz-executor.6) pid=491338 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff80002961afd0,0xffff80002961ba60 process=0xffff8000ffff2dd0 user=0xffff800023363000, vmspace=0xfffffd8068385308 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 39199 190360 92665 0 2 0 syz-executor.6 *39199 491338 92665 0 7 0x4000000 syz-executor.6 9801 93729 99889 0 2 0 syz-executor.2 31962 379510 98937 0 7 0 syz-executor.4 31962 458368 98937 0 2 0x4000000 syz-executor.4 38377 19945 65455 0 2 0 syz-executor.5 38377 379041 65455 0 3 0x4000080 ttyout syz-executor.5 56403 482600 28913 0 2 0 syz-executor.3 56403 518512 28913 0 3 0x4000080 fsleep syz-executor.3 14960 222717 30789 0 3 0x80 nanoslp syz-executor.7 14960 351238 30789 0 3 0x4000080 netio syz-executor.7 14960 317912 30789 0 3 0x4000080 fsleep syz-executor.7 21207 48030 0 0 3 0x14200 acct acct 57323 205962 38638 0 2 0x2 syz-executor.1 98937 215377 38638 0 3 0x82 nanoslp syz-executor.4 92665 195088 38638 0 3 0x82 nanoslp syz-executor.6 49748 335733 38638 0 2 0x2 syz-executor.0 99889 85035 38638 0 3 0x82 nanoslp syz-executor.2 28913 33556 38638 0 3 0x82 nanoslp syz-executor.3 28469 113361 0 0 3 0x14280 nfsidl nfsio 48069 229815 0 0 3 0x14280 nfsidl nfsio 96306 235760 0 0 3 0x14280 nfsidl nfsio 20762 130246 0 0 3 0x14280 nfsidl nfsio 92848 192529 0 0 3 0x14280 nfsidl nfsio 97250 189379 0 0 3 0x14280 nfsidl nfsio 62253 75195 0 0 3 0x14280 nfsidl nfsio 22053 77121 0 0 3 0x14280 nfsidl nfsio 74456 465530 0 0 3 0x14280 nfsidl nfsio 46294 234208 0 0 3 0x14280 nfsidl nfsio 2863 117157 0 0 3 0x14280 nfsidl nfsio 24761 86968 0 0 3 0x14280 nfsidl nfsio 55410 456756 0 0 3 0x14280 nfsidl nfsio 33836 234138 0 0 3 0x14280 nfsidl nfsio 74781 256036 0 0 3 0x14280 nfsidl nfsio 71009 280898 0 0 3 0x14280 nfsidl nfsio 2079 47762 0 0 3 0x14280 nfsidl nfsio 21433 53777 0 0 3 0x14280 nfsidl nfsio 15535 326348 0 0 3 0x14280 nfsidl nfsio 88500 347678 0 0 3 0x14280 nfsidl nfsio 65455 410953 38638 0 3 0x82 nanoslp syz-executor.5 30789 167601 38638 0 3 0x82 nanoslp syz-executor.7 54196 314144 0 0 3 0x14200 bored sosplice 83298 110509 1 0 3 0x100083 ttyin getty 38638 136279 13450 0 3 0x82 kqread syz-fuzzer 38638 260683 13450 0 3 0x4000082 nanoslp syz-fuzzer 38638 337570 13450 0 3 0x4000082 thrsleep syz-fuzzer 38638 259052 13450 0 3 0x4000082 wait syz-fuzzer 38638 146784 13450 0 3 0x4000082 thrsleep syz-fuzzer 38638 162838 13450 0 3 0x4000082 wait syz-fuzzer 38638 283847 13450 0 3 0x4000082 wait syz-fuzzer 38638 408149 13450 0 3 0x4000082 wait syz-fuzzer 38638 444593 13450 0 3 0x4000082 thrsleep syz-fuzzer 38638 132301 13450 0 3 0x4000082 wait syz-fuzzer 38638 284469 13450 0 3 0x4000082 thrsleep syz-fuzzer 38638 5192 13450 0 3 0x4000082 wait syz-fuzzer 38638 231565 13450 0 3 0x4000082 thrsleep syz-fuzzer 38638 217546 13450 0 3 0x4000082 wait syz-fuzzer 38638 66844 13450 0 3 0x4000082 wait syz-fuzzer 38638 331283 13450 0 3 0x4000082 thrsleep syz-fuzzer 13450 52130 37842 0 3 0x10008a sigsusp ksh 37842 311843 71491 0 3 0x9a kqread sshd 71491 335707 1 0 3 0x88 kqread sshd 59910 8621 90127 74 3 0x1100092 bpf pflogd 90127 231528 1 0 3 0x80 netio pflogd 71371 145183 80534 73 3 0x1100090 kqread syslogd 80534 255408 1 0 3 0x100082 netio syslogd 47046 250114 1 0 3 0x100080 kqread resolvd 15822 31268 7773 77 3 0x100092 kqread dhcpleased 56367 162073 7773 77 3 0x100092 kqread dhcpleased 7773 184571 1 0 3 0x80 kqread dhcpleased 69732 38751 0 0 3 0x14200 bored smr 77297 211564 0 0 2 0x14200 zerothread 67095 191880 0 0 3 0x14200 aiodoned aiodoned 66699 523711 0 0 3 0x14200 syncer update 98828 231772 0 0 3 0x14200 cleaner cleaner 58446 437998 0 0 3 0x14200 reaper reaper 84003 178961 0 0 3 0x14200 pgdaemon pagedaemon 52531 302500 0 0 3 0x14200 bored viomb 98650 209446 0 0 3 0x40014200 acpi0 acpi0 48169 150558 0 0 3 0x40014200 idle1 73062 373076 0 0 3 0x14200 bored softnet 85654 14878 0 0 3 0x14200 bored softnet 70146 185978 0 0 3 0x14200 bored softnet 30614 81503 0 0 3 0x14200 bored softnet 42327 260405 0 0 3 0x14200 bored systqmp 33500 288487 0 0 3 0x14200 bored systq 13577 52412 0 0 3 0x40014200 bored softclock 69454 378403 0 0 3 0x40014200 idle0 1 418845 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 39199 (syz-executor.6) thread 0xffff80002961b510 (491338) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82a03868) #0 witness_lock+0x44d #1 vn_ioctl+0x41 sys/kern/vfs_vnops.c:508 #2 sys_ioctl+0x4a2 #3 syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] #3 syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 #4 Xsyscall+0x128 Process 57323 (syz-executor.1) thread 0xffff80002961b270 (205962) exclusive rrwlock inode r = 0 (0xfffffd806d976920) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1353 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 #10 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #10 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807519e2b8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412 #6 namei+0x36a sys/kern/vfs_lookup.c:244 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097 #8 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 Process 49748 (syz-executor.0) thread 0xffff800021258000 (335733) exclusive rrwlock inode r = 0 (0xfffffd80657ba2c0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vn_closefile+0xc6 vn_close sys/kern/vfs_vnops.c:292 [inline] #5 vn_closefile+0xc6 sys/kern/vfs_vnops.c:609 #6 fdrop+0xc7 sys/kern/kern_descrip.c:1274 #7 closef+0x11c sys/kern/kern_descrip.c:1258 #8 syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10241 6759K 7154K 78643K 19866 0 pcb 13 18K 21K 78643K 758 0 rtable 214 20K 21K 78643K 1595 0 ifaddr 117 22K 24K 78643K 554 0 sysctl 3 1K 3K 78643K 74 0 counters 60 36K 36K 78643K 232 0 ioctlops 1 1K 4K 78643K 1927 0 iov 0 0K 16K 78643K 644 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1358 85K 85K 78643K 3949 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 45 0 VM map 2 1K 1K 78643K 2 0 sem 24 1K 1K 78643K 34 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 89K 78643K 5958 0 sigio 0 0K 0K 78643K 32 0 proc 71 91K 115K 78643K 1362 0 subproc 104 6K 6K 78643K 390 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 424 0 in_multi 81 5K 6K 78643K 477 0 ether_multi 1 0K 0K 78643K 40 0 mrt 1 0K 0K 78643K 53 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 157 705K 705K 78643K 157 0 exec 0 0K 2K 78643K 1672 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 62K 78643K 8 0 UVM amap 317 184K 184K 78643K 36656 0 UVM aobj 72 3K 3K 78643K 75 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 150 0 NDP 19 0K 1K 78643K 165 0 temp 155 4727K 38519K 78643K 61943 0 kqueue 12 18K 26K 78643K 342 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 403 0 400 5 4 1 3 0 8 0 rtentry 112 429 0 349 4 0 4 4 0 8 0 unpcb 144 10648 0 10631 75 70 5 10 0 8 4 syncache 296 25 0 25 7 6 1 1 0 8 1 tcpqe 32 833 0 833 5 4 1 1 0 8 1 tcpcb 768 1427 0 1415 58 56 2 14 0 8 0 arp 120 70 0 56 1 0 1 1 0 8 0 inpcb 320 3964 0 3953 94 92 2 18 0 8 0 nd6 48 103 0 85 1 0 1 1 0 8 0 pkpcb 40 21 0 21 5 5 0 1 0 8 0 kcovpl 48 30 0 22 1 0 1 1 0 8 0 mppekey 1024 1 0 0 1 0 1 1 0 8 0 ppxss 1256 51 0 49 10 9 1 1 0 8 0 pffrag 232 10 0 10 3 2 1 1 0 482 1 pffrnode 88 10 0 10 3 2 1 1 0 8 1 pffrent 40 100 0 100 3 2 1 1 0 8 1 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 10 0 3 1 0 1 1 0 8 0 pfanchor 1280 8 0 0 1 0 1 1 0 8 0 pfstitem 24 43 0 41 1 0 1 1 0 8 0 pfstkey 120 43 0 41 2 1 1 2 0 8 0 pfstate 336 43 0 41 3 2 1 3 0 8 0 pfrule 1360 35 0 24 4 3 1 2 0 8 0 rttmr 136 15 0 15 4 4 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1915 0 1551 48 20 28 29 0 8 3 art_table 32 1916 0 1551 4 0 4 4 0 8 0 art_node 16 428 0 360 1 0 1 1 0 8 0 sysvmsgpl 40 24 0 5 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 25 0 3 1 0 1 1 0 8 0 shmpl 112 72 0 3 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8602 0 7151 91 0 91 91 0 8 0 ffsino 272 8602 0 7151 97 0 97 97 0 8 0 nchpl 144 17826 0 16177 63 0 63 63 0 8 0 rtmask 32 3 0 3 1 1 0 1 0 8 0 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 59523 0 59522 5 4 1 2 0 8 0 percpumem 16 128 0 86 1 0 1 1 0 8 0 vcpupl 2048 9 0 0 2 0 2 2 0 8 0 vmpool 568 13 0 4 2 1 1 1 0 8 0 pfiaddrpl 120 10 0 0 1 0 1 1 0 8 0 kstatmem 264 188 0 150 5 2 3 3 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 45925 0 45925 14 12 2 8 0 8 2 plimitpl 152 699 0 684 1 0 1 1 0 8 0 sigapl 424 6384 0 6316 11 3 8 8 0 8 0 futexpl 64 57441 0 57439 1 0 1 1 0 8 0 knotepl 120 733 0 0 17 0 17 17 0 8 0 kqueuepl 216 927 0 919 23 22 1 5 0 8 0 pipepl 320 1296 0 1268 38 35 3 9 0 8 0 fdescpl 496 6204 0 6175 8 4 4 5 0 8 0 filepl 152 42487 0 42239 91 72 19 20 0 8 8 lockfpl 104 1599 0 1596 4 3 1 2 0 8 0 lockfspl 48 455 0 452 1 0 1 1 0 8 0 sessionpl 144 47 0 30 1 0 1 1 0 8 0 pgrppl 48 95 0 78 1 0 1 1 0 8 0 ucredpl 104 3945 0 3933 1 0 1 1 0 8 0 zombiepl 144 6316 0 6316 1 0 1 1 0 8 1 processpl 1064 6384 0 6316 5 0 5 5 0 8 0 procpl 672 17277 0 17188 18 9 9 11 0 8 0 srpgc 96 30 0 30 10 9 1 1 0 8 1 sosppl 168 16 0 16 5 5 0 1 0 8 0 sockpl 488 15042 0 15011 373 355 18 33 0 8 12 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 15 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 24 0 0 2 0 2 2 0 8 0 mcl8k 8192 33 0 0 3 0 3 3 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 414 0 0 43 3 40 43 0 8 0 mtagpl 96 346 0 0 8 0 8 8 0 8 0 mbufpl 256 759 0 0 41 0 41 41 0 8 0 bufpl 288 11652 0 5323 453 0 453 453 0 8 0 anonpl 24 1190436 0 1172539 166 44 122 133 0 186 0 amapchunkpl 152 103769 0 103044 43 9 34 36 0 158 0 amappl16 200 15539 0 14939 79 44 35 45 0 8 0 amappl15 192 643 0 636 1 0 1 1 0 8 0 amappl14 184 274 0 265 2 1 1 1 0 8 0 amappl13 176 675 0 672 1 0 1 1 0 8 0 amappl12 168 581 0 576 1 0 1 1 0 8 0 amappl11 160 1690 0 1668 2 0 2 2 0 8 0 amappl10 152 994 0 988 1 0 1 1 0 8 0 amappl9 144 1789 0 1783 1 0 1 1 0 8 0 amappl8 136 1247 0 1152 4 0 4 4 0 8 0 amappl7 128 398 0 373 1 0 1 1 0 8 0 amappl6 120 1669 0 1652 2 1 1 2 0 8 0 amappl5 112 5669 0 5651 1 0 1 1 0 8 0 amappl4 104 3389 0 3356 3 2 1 2 0 8 0 amappl3 96 18613 0 18554 3 1 2 2 0 8 0 amappl2 88 1793 0 1747 2 0 2 2 0 8 0 amappl1 80 153621 0 152942 22 6 16 20 0 8 0 amappl 88 35682 0 35486 5 0 5 5 0 92 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 128 253 0 253 1 1 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 74 0 3 2 0 2 2 0 8 0 uaddrrnd 24 6218 0 6180 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6218 0 6180 1 0 1 1 0 8 0 vmmpekpl 168 50844 0 50754 5 0 5 5 0 8 0 vmmpepl 168 609316 0 606583 216 84 132 150 0 357 0 vmsppl 368 6217 0 6180 6 2 4 4 0 8 0 rwobjpl 56 152801 0 145113 119 8 111 112 0 8 0 pdppl 4096 12443 0 12369 375 297 78 81 0 8 4 pvpl 32 2366639 0 2344621 326 131 195 242 0 265 0 pmappl 248 6217 0 6180 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1197 0 342 25 0 25 25 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace rc4_keysetup(ffff80002131e2fa,ffff80002131e40c,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff80002131e2c0,ffffcd21,4f68,ffff8000006d1e6c,ffffcd21) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff800023368568,ffff8000006d1c00) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff800023368568,ffff8000006d1c00) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff8000006d1c00,1,ffff80002961b510) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086334,82907003,ffff8000006d1c00,1,ffff80002961b510) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd805cc8d950,82907003,ffff8000006d1c00,1,fffffd807f7d7548,ffff80002961b510) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067991268,82907003,ffff8000006d1c00,ffff80002961b510) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002961b510,ffff8000233688b8,ffff800023368900) at sys_ioctl+0x4a2 syscall(ffff800023368980) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800023368980) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x19c6070a740, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 end of kernel end trace frame: 0x7f7fffffab40, count: -3