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(ffff800022d3d452,ffff800022d3d564,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff800022d3d418,ffffe060,5380,ffff800000d8ae6c,ffffe060) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff80002e5f1748,ffff800000d8ac00) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002e5f1748,ffff800000d8ac00) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000d8ac00,1,ffff80002e48c540) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086334,82907003,ffff800000d8ac00,1,ffff80002e48c540) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd80654af570,82907003,ffff800000d8ac00,1,fffffd807f7d7750,ffff80002e48c540) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806e5cf990,82907003,ffff800000d8ac00,ffff80002e48c540) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002e48c540,ffff80002e5f1a98,ffff80002e5f1ae0) at sys_ioctl+0x4a2 syscall(ffff80002e5f1b60) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002e5f1b60) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa943baf41f0, count: -9 ddb{0}> show registers rdi 0xffff800029433000 rsi 0 rbp 0xffff80002e5f15d0 rbx 0 rdx 0 rcx 0 rax 0x1 r8 0x60 r9 0x2f2d33bf r10 0xe3e0683836a84e67 r11 0xf548eb6134ec13b6 r12 0xffff800022d3d564 r13 0 r14 0xffff800022d3d452 r15 0 rip 0xffffffff81b4bf7f rc4_keysetup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002e5f1570 ss 0x10 rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb{0}> show proc PROC (syz-executor.5) pid=109436 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff8000212587e0,0xffff80002e48ca90 process=0xffff80002e4f6dd8 user=0xffff80002e5ec000, vmspace=0xfffffd807d284730 estcpu=32, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 83167 390705 17787 0 2 0 syz-executor.3 83563 139358 54508 0 2 0 syz-executor.4 83563 176092 54508 0 3 0x4000080 lockf syz-executor.4 83563 257349 54508 0 3 0x4000080 fsleep syz-executor.4 83563 266510 54508 0 3 0x4000080 fsleep syz-executor.4 82962 17953 67364 0 2 0 syz-executor.7 82962 133923 67364 0 3 0x4000080 kqread syz-executor.7 82962 244478 67364 0 3 0x4000080 fsleep syz-executor.7 49004 153156 38647 0 2 0x4081000 syz-executor.6 49004 388198 38647 0 3 0x4003000 suspend syz-executor.6 95350 143242 40132 0 2 0 syz-executor.1 95350 349088 40132 0 3 0x4000080 netio syz-executor.1 71211 392826 68864 0 2 0 syz-executor.5 *71211 109436 68864 0 7 0x4000000 syz-executor.5 71211 130155 68864 0 3 0x4000080 fsleep syz-executor.5 70046 467825 35665 60928 2 0x10 syz-executor.0 70046 230034 35665 60928 3 0x4000090 fsleep syz-executor.0 16917 485923 60730 0 2 0x2 syz-executor.2 17787 334027 60730 0 3 0x82 nanoslp syz-executor.3 67364 244413 60730 0 3 0x82 nanoslp syz-executor.7 43151 475380 0 0 3 0x14280 nfsidl nfsio 70969 42374 0 0 3 0x14280 nfsidl nfsio 62028 329881 0 0 3 0x14280 nfsidl nfsio 62001 51322 0 0 3 0x14280 nfsidl nfsio 16455 58039 0 0 3 0x14280 nfsidl nfsio 39093 143551 0 0 3 0x14280 nfsidl nfsio 7704 444471 0 0 3 0x14280 nfsidl nfsio 90115 503147 0 0 3 0x14280 nfsidl nfsio 14266 445869 0 0 3 0x14280 nfsidl nfsio 19634 365697 0 0 3 0x14280 nfsidl nfsio 96914 430819 0 0 3 0x14280 nfsidl nfsio 51797 267837 0 0 3 0x14280 nfsidl nfsio 68151 217640 0 0 3 0x14280 nfsidl nfsio 75156 349494 0 0 3 0x14280 nfsidl nfsio 91927 126276 0 0 3 0x14280 nfsidl nfsio 33621 321285 0 0 3 0x14280 nfsidl nfsio 39734 509652 0 0 3 0x14280 nfsidl nfsio 87656 60770 0 0 3 0x14280 nfsidl nfsio 25487 300277 0 0 3 0x14280 nfsidl nfsio 21587 3455 0 0 3 0x14280 nfsidl nfsio 35665 201377 60730 0 3 0x82 nanoslp syz-executor.0 81706 318622 1 0 3 0x100083 ttyin getty 40132 292161 60730 0 3 0x82 nanoslp syz-executor.1 38647 164491 60730 0 3 0x82 nanoslp syz-executor.6 68864 28516 60730 0 3 0x82 nanoslp syz-executor.5 54508 188043 60730 0 3 0x82 nanoslp syz-executor.4 82186 431934 0 0 3 0x14200 bored sosplice 60730 179922 60911 0 3 0x82 thrsleep syz-fuzzer 60730 57981 60911 0 3 0x4000082 nanoslp syz-fuzzer 60730 361739 60911 0 3 0x4000082 thrsleep syz-fuzzer 60730 36849 60911 0 3 0x4000082 wait syz-fuzzer 60730 168149 60911 0 3 0x4000082 thrsleep syz-fuzzer 60730 120621 60911 0 3 0x4000082 wait syz-fuzzer 60730 489306 60911 0 3 0x4000082 wait syz-fuzzer 60730 191708 60911 0 3 0x4000082 wait syz-fuzzer 60730 2117 60911 0 3 0x4000082 thrsleep syz-fuzzer 60730 150130 60911 0 3 0x4000082 kqread syz-fuzzer 60730 446240 60911 0 3 0x4000082 wait syz-fuzzer 60730 288019 60911 0 3 0x4000082 wait syz-fuzzer 60730 224460 60911 0 3 0x4000082 thrsleep syz-fuzzer 60730 383197 60911 0 3 0x4000082 wait syz-fuzzer 60730 346055 60911 0 3 0x4000082 nanoslp syz-fuzzer 60730 505093 60911 0 3 0x4000082 wait syz-fuzzer 60911 260065 59024 0 3 0x10008a sigsusp ksh 59024 31992 53366 0 3 0x9a kqread sshd 53366 292086 1 0 3 0x88 kqread sshd 40490 418752 93980 74 3 0x1100092 bpf pflogd 93980 348947 1 0 3 0x80 netio pflogd 44194 84091 10019 73 3 0x1100090 kqread syslogd 10019 70465 1 0 3 0x100082 netio syslogd 87463 294990 1 0 3 0x100080 kqread resolvd 59195 294842 14985 77 3 0x100092 kqread dhcpleased 96773 438646 14985 77 3 0x100092 kqread dhcpleased 14985 453083 1 0 3 0x80 kqread dhcpleased 3717 375280 0 0 3 0x14200 bored smr 56027 348903 0 0 2 0x14200 zerothread 34379 9280 0 0 3 0x14200 aiodoned aiodoned 13600 410526 0 0 3 0x14200 syncer update 59935 38947 0 0 3 0x14200 cleaner cleaner 5363 427632 0 0 3 0x14200 reaper reaper 51145 176083 0 0 3 0x14200 pgdaemon pagedaemon 32081 434728 0 0 3 0x14200 bored viomb 21686 212192 0 0 3 0x40014200 acpi0 acpi0 89583 87801 0 0 7 0x40014200 idle1 6729 328658 0 0 3 0x14200 bored softnet 20052 402696 0 0 3 0x14200 bored softnet 54948 123279 0 0 3 0x14200 bored softnet 13039 459176 0 0 3 0x14200 bored softnet 49281 10057 0 0 3 0x14200 bored systqmp 15306 28016 0 0 3 0x14200 bored systq 28258 160778 0 0 3 0x40014200 bored softclock 72243 511100 0 0 3 0x40014200 idle0 1 400075 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 71211 (syz-executor.5) thread 0xffff80002e48c540 (109436) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82afcd50) #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 16917 (syz-executor.2) thread 0xffff8000212ef7a8 (485923) exclusive rrwlock inode r = 0 (0xfffffd8067061a28) #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 (0xfffffd806824cd68) #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10238 6574K 7345K 78643K 30932 0 pcb 19 24K 34K 78643K 25040 0 rtable 252 26K 27K 78643K 3828 0 ifaddr 147 36K 38K 78643K 1569 0 sysctl 2 0K 2K 78643K 10 0 counters 62 36K 36K 78643K 590 0 ioctlops 1 1K 4K 78643K 4195 0 iov 0 0K 24K 78643K 2178 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1434 90K 90K 78643K 9046 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 3 5K 9K 78643K 152 0 VM map 2 1K 1K 78643K 2 0 sem 12 5K 6K 78643K 20 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 93K 78643K 16001 0 sigio 0 0K 0K 78643K 360 0 proc 70 91K 128K 78643K 2801 0 subproc 104 6K 6K 78643K 857 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 748 0 in_multi 87 6K 6K 78643K 1165 0 ether_multi 1 0K 0K 78643K 93 0 mrt 1 0K 0K 78643K 131 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 181 811K 811K 78643K 181 0 exec 0 0K 2K 78643K 4164 0 pfkey data 0 0K 0K 78643K 116 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 512 978K 1371K 78643K 89398 0 UVM aobj 131 4K 4K 78643K 143 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 733 0 NDP 18 0K 1K 78643K 417 0 temp 152 4727K 70262K 78643K 150771 0 kqueue 12 18K 28K 78643K 1202 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 1267 0 1264 17 16 1 3 0 8 0 rtentry 112 993 0 906 4 1 3 4 0 8 0 unpcb 144 9141 0 9124 117 116 1 10 0 8 0 syncache 296 44 0 44 12 12 0 1 0 8 0 tcpqe 32 386 0 386 7 7 0 1 0 8 0 tcpcb 768 4299 0 4295 151 150 1 20 0 8 0 arp 120 142 0 128 1 0 1 1 0 8 0 inpcb 368 37743 0 37730 371 366 5 22 0 8 3 nd6 48 236 0 215 1 0 1 1 0 8 0 pkpcb 40 171 0 171 18 18 0 1 0 8 0 kcovpl 48 65 0 57 1 0 1 1 0 8 0 mppekey 1024 1 0 0 1 0 1 1 0 8 0 ppxss 1256 148 0 146 20 19 1 1 0 8 0 pfstscr 40 67 0 66 2 1 1 1 0 8 0 pffrag 232 78 0 77 9 8 1 1 0 482 0 pffrnode 88 78 0 77 9 8 1 1 0 8 0 pffrent 40 280 0 279 12 11 1 1 0 8 0 pfosfp 40 1436 0 1011 5 0 5 5 0 8 0 pfosfpen 112 1436 0 720 21 0 21 21 0 8 0 pfrktable 1344 186 0 166 2 0 2 2 0 8 0 pfanchor 1280 253 0 44 18 0 18 18 0 8 0 pftag 88 8 0 0 1 0 1 1 0 8 0 pfqueue 264 7 0 7 2 2 0 1 0 8 0 pfstitem 24 260 0 243 1 0 1 1 0 8 0 pfstkey 120 292 0 284 2 1 1 2 0 8 0 pfstate 336 229 0 218 4 2 2 4 0 8 0 pfrule 1360 283 0 186 13 4 9 9 0 8 0 rttmr 136 32 0 32 9 9 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 4691 0 4276 56 26 30 31 0 8 1 art_table 32 4692 0 4276 4 0 4 4 0 8 0 art_node 16 986 0 908 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 0 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 12 0 2 1 0 1 1 0 8 0 shmpl 112 140 0 12 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 22405 0 20918 94 0 94 94 0 8 0 ffsino 272 22405 0 20918 100 0 100 100 0 8 0 nchpl 144 42586 0 40935 63 0 63 63 0 8 0 rtmask 32 9 0 9 3 3 0 1 0 8 0 uvmvnodes 80 6083 0 0 125 0 125 125 0 8 0 vnodes 216 6083 0 0 338 0 338 338 0 8 0 namei 1024 149402 0 149401 8 7 1 2 0 8 0 percpumem 16 307 0 264 1 0 1 1 0 8 0 vcpupl 2048 267 0 1 34 0 34 34 0 8 0 vmpool 568 287 0 21 20 1 19 20 0 8 0 pfiaddrpl 120 99 0 58 2 0 2 2 0 8 0 kstatmem 264 522 0 486 4 1 3 3 0 8 0 scsiplug 72 21 0 21 6 6 0 1 0 8 0 scxspl 216 131395 0 131395 25 23 2 8 0 8 2 plimitpl 152 2512 0 2497 1 0 1 1 0 8 0 sigapl 424 16258 0 16190 12 4 8 8 0 8 0 futexpl 64 171739 0 171734 6 5 1 1 0 8 0 knotepl 120 1091 0 0 14 1 13 14 0 8 0 kqueuepl 216 2538 0 2529 37 36 1 5 0 8 0 pipepl 320 3094 0 3066 85 82 3 10 0 8 0 fdescpl 496 16178 0 16148 7 3 4 5 0 8 0 filepl 152 122001 0 121742 223 205 18 23 0 8 8 lockfpl 104 4267 0 4263 6 5 1 2 0 8 0 lockfspl 48 1059 0 1056 1 0 1 1 0 8 0 sessionpl 144 86 0 69 1 0 1 1 0 8 0 pgrppl 48 287 0 270 1 0 1 1 0 8 0 ucredpl 104 15934 0 15919 1 0 1 1 0 8 0 zombiepl 144 16191 0 16190 4 3 1 1 0 8 0 processpl 1064 16258 0 16190 5 0 5 5 0 8 0 procpl 672 41040 0 40946 24 15 9 10 0 8 0 srpgc 96 82 0 82 20 20 0 1 0 8 0 sosppl 168 120 0 120 22 22 0 1 0 8 0 sockpl 488 48492 0 48459 830 822 8 35 0 8 3 mcl64k 65536 16 0 0 2 0 2 2 0 8 0 mcl16k 16384 9 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 9 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 526 0 0 58 18 40 58 0 8 0 mtagpl 96 929 0 0 13 0 13 13 0 8 0 mbufpl 256 9164 0 0 553 0 553 553 0 8 0 bufpl 288 28761 0 22429 453 0 453 453 0 8 0 anonpl 24 3184764 0 3161783 402 253 149 198 0 186 0 amapchunkpl 152 344188 0 343333 759 721 38 348 0 158 0 amappl16 200 49238 0 48383 193 141 52 58 0 8 0 amappl15 192 4470 0 4462 1 0 1 1 0 8 0 amappl14 184 3279 0 3272 1 0 1 1 0 8 0 amappl13 176 1400 0 1396 1 0 1 1 0 8 0 amappl12 168 2476 0 2468 1 0 1 1 0 8 0 amappl11 160 1865 0 1843 2 0 2 2 0 8 0 amappl10 152 1664 0 1655 1 0 1 1 0 8 0 amappl9 144 2018 0 2015 1 0 1 1 0 8 0 amappl8 136 3288 0 3160 5 0 5 5 0 8 0 amappl7 128 1833 0 1807 1 0 1 1 0 8 0 amappl6 120 2136 0 2118 2 1 1 2 0 8 0 amappl5 112 12403 0 12382 1 0 1 1 0 8 0 amappl4 104 7207 0 7175 3 2 1 2 0 8 0 amappl3 96 49372 0 49304 3 1 2 2 0 8 0 amappl2 88 2916 0 2870 7 5 2 2 0 8 0 amappl1 80 396473 0 395751 20 4 16 20 0 8 0 amappl 88 87514 0 87253 8 2 6 7 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 72 142 0 12 3 0 3 3 0 8 0 uaddrrnd 24 16465 0 16169 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 16465 0 16169 2 0 2 2 0 8 0 vmmpekpl 168 112017 0 111922 5 0 5 5 0 8 0 vmmpepl 168 1580005 0 1576298 400 227 173 189 0 357 0 vmsppl 368 16464 0 16169 31 4 27 27 0 8 0 rwobjpl 56 383447 0 375144 148 30 118 120 0 8 0 pdppl 4096 32937 0 32604 1067 732 335 335 0 8 2 pvpl 32 6366103 0 6342402 636 430 206 297 0 265 0 pmappl 248 16464 0 16169 20 1 19 19 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2880 0 1180 49 0 49 49 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace rc4_keysetup(ffff800022d3d452,ffff800022d3d564,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff800022d3d418,ffffe060,5380,ffff800000d8ae6c,ffffe060) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff80002e5f1748,ffff800000d8ac00) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002e5f1748,ffff800000d8ac00) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000d8ac00,1,ffff80002e48c540) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086334,82907003,ffff800000d8ac00,1,ffff80002e48c540) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd80654af570,82907003,ffff800000d8ac00,1,fffffd807f7d7750,ffff80002e48c540) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806e5cf990,82907003,ffff800000d8ac00,ffff80002e48c540) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002e48c540,ffff80002e5f1a98,ffff80002e5f1ae0) at sys_ioctl+0x4a2 syscall(ffff80002e5f1b60) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002e5f1b60) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa943baf41f0, 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020dd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:175 end trace frame: 0x0, count: -5