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(ffff8000277d22fa,ffff8000277d240c,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff8000277d22c0,ffff9851,2615,ffff800000c5fe6c,ffff9851) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff8000247685f8,ffff800000c5fc00) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff8000247685f8,ffff800000c5fc00) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000c5fc00,1,ffff8000ffff57a8) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1316 [inline] pppacioctl(4086334,82907003,ffff800000c5fc00,1,ffff8000ffff57a8) at pppacioctl+0x156 sys/net/if_pppx.c:1166 VOP_IOCTL(fffffd8068bf7540,82907003,ffff800000c5fc00,1,fffffd807f7d7410,ffff8000ffff57a8) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067958ee0,82907003,ffff800000c5fc00,ffff8000ffff57a8) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000ffff57a8,ffff800024768948,ffff800024768990) at sys_ioctl+0x4a2 syscall(ffff800024768a10) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800024768a10) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x59bd21367b0, count: -9 ddb{0}> show registers rdi 0xffff800028a61000 rsi 0 rbp 0xffff800024768480 rbx 0 rdx 0 rcx 0 rax 0x1 r8 0x60 r9 0x2f2d33bf r10 0x6bf301e33e0abd7 r11 0x6013e72395c020af r12 0xffff8000277d240c r13 0 r14 0xffff8000277d22fa r15 0 rip 0xffffffff82440a2f rc4_keysetup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800024768420 ss 0x10 rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb{0}> show proc PROC (syz-executor.6) pid=51805 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff4fc8,0xffff8000ffff5cf8 process=0xffff8000ffff0868 user=0xffff800024763000, vmspace=0xfffffd8079cecb90 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 36567 307807 29495 0 2 0 syz-executor.4 87003 213577 49217 0 2 0 syz-executor.0 12401 342802 13946 0 2 0 syz-executor.1 12401 479479 13946 0 3 0x4000080 fsleep syz-executor.1 22733 123635 47757 0 2 0 syz-executor.6 *22733 51805 47757 0 7 0x4000000 syz-executor.6 7990 312078 62188 0 2 0 syz-executor.2 96915 214003 30207 0 3 0x80 nanoslp syz-executor.3 96915 253048 30207 0 3 0x4000080 fsleep syz-executor.3 95198 213536 1275 0 3 0x80 nanoslp syz-executor.7 95198 286050 1275 0 3 0x4000080 nanoslp syz-executor.7 95198 162579 1275 0 3 0x4000080 fsleep syz-executor.7 62188 403164 27830 0 3 0x82 nanoslp syz-executor.2 1275 22059 27830 0 3 0x82 nanoslp syz-executor.7 13946 504588 27830 0 3 0x82 nanoslp syz-executor.1 30207 142430 27830 0 3 0x82 nanoslp syz-executor.3 47757 198104 27830 0 3 0x82 nanoslp syz-executor.6 74439 472899 0 0 3 0x14200 bored sosplice 28958 166922 27830 0 7 0x2 syz-executor.5 29495 484923 27830 0 3 0x82 nanoslp syz-executor.4 49217 194418 27830 0 3 0x82 nanoslp syz-executor.0 27830 440654 56909 0 3 0x82 thrsleep syz-fuzzer 27830 293162 56909 0 3 0x4000082 nanoslp syz-fuzzer 27830 348999 56909 0 3 0x4000082 kqread syz-fuzzer 27830 316729 56909 0 3 0x4000082 wait syz-fuzzer 27830 34346 56909 0 3 0x4000082 wait syz-fuzzer 27830 66464 56909 0 3 0x4000082 wait syz-fuzzer 27830 501361 56909 0 3 0x4000082 thrsleep syz-fuzzer 27830 236273 56909 0 3 0x4000082 wait syz-fuzzer 27830 115270 56909 0 3 0x4000082 thrsleep syz-fuzzer 27830 117305 56909 0 3 0x4000082 wait syz-fuzzer 27830 334378 56909 0 3 0x4000082 thrsleep syz-fuzzer 27830 56229 56909 0 3 0x4000082 thrsleep syz-fuzzer 27830 385221 56909 0 3 0x4000082 thrsleep syz-fuzzer 27830 503701 56909 0 3 0x4000082 wait syz-fuzzer 27830 140873 56909 0 3 0x4000082 wait syz-fuzzer 27830 498347 56909 0 3 0x4000082 wait syz-fuzzer 56909 338577 6071 0 3 0x10008a sigsusp ksh 6071 491943 19715 0 3 0x9a kqread sshd 94763 149116 1 0 3 0x100083 ttyin getty 19715 498085 1 0 3 0x88 kqread sshd 58194 241510 40279 74 3 0x1100092 bpf pflogd 40279 115063 1 0 3 0x80 netio pflogd 53058 239672 91574 73 3 0x1100090 kqread syslogd 91574 464965 1 0 3 0x100082 netio syslogd 19308 22834 1 0 3 0x100080 kqread resolvd 37849 354840 2021 77 3 0x100092 kqread dhcpleased 23141 106097 2021 77 3 0x100092 kqread dhcpleased 2021 416504 1 0 3 0x80 kqread dhcpleased 78291 31770 0 0 3 0x14200 bored smr 80739 165629 0 0 2 0x14200 zerothread 3324 45163 0 0 3 0x14200 aiodoned aiodoned 39929 308588 0 0 3 0x14200 syncer update 42758 511539 0 0 3 0x14200 cleaner cleaner 94138 155875 0 0 3 0x14200 reaper reaper 6875 117711 0 0 3 0x14200 pgdaemon pagedaemon 47431 18746 0 0 3 0x14200 bored viomb 50633 410508 0 0 3 0x40014200 acpi0 acpi0 68654 475602 0 0 3 0x40014200 idle1 39877 415587 0 0 3 0x14200 bored softnet 74361 511339 0 0 3 0x14200 bored softnet 50915 353045 0 0 3 0x14200 bored softnet 9403 454688 0 0 3 0x14200 bored softnet 45439 85922 0 0 3 0x14200 bored systqmp 49608 330508 0 0 3 0x14200 bored systq 61993 402953 0 0 3 0x40014200 bored softclock 85448 395630 0 0 3 0x40014200 idle0 1 393403 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 22733 (syz-executor.6) thread 0xffff8000ffff57a8 (51805) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82a18488) #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 28958 (syz-executor.5) thread 0xffff800021318550 (166922) exclusive rrwlock inode r = 0 (0xfffffd8065a95d68) #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 (0xfffffd8068cd0f80) #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 10206 6493K 6871K 78643K 12057 0 pcb 15 14K 16K 78643K 498 0 rtable 181 14K 15K 78643K 659 0 ifaddr 79 15K 19K 78643K 180 0 counters 54 35K 35K 78643K 80 0 ioctlops 1 1K 4K 78643K 1529 0 iov 0 0K 16K 78643K 34 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1273 80K 80K 78643K 1633 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 225 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 85K 78643K 828 0 sigio 0 0K 0K 78643K 7 0 proc 72 103K 115K 78643K 719 0 subproc 104 6K 6K 78643K 182 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 32 0 in_multi 70 4K 7K 78643K 197 0 ether_multi 1 0K 0K 78643K 14 0 mrt 1 0K 0K 78643K 8 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 175 784K 784K 78643K 175 0 exec 0 0K 2K 78643K 940 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 64K 78643K 10 0 UVM amap 267 85K 659K 78643K 6523 0 UVM aobj 44 2K 2K 78643K 47 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 20 0 NDP 12 0K 1K 78643K 54 0 temp 89 4713K 4780K 78643K 14568 0 kqueue 13 20K 24K 78643K 92 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 81 0 78 1 0 1 1 0 8 0 rtentry 112 182 0 104 4 0 4 4 0 8 0 unpcb 144 627 0 612 7 6 1 6 0 8 0 syncache 296 13 0 13 3 2 1 1 0 8 1 tcpqe 32 18 0 18 1 1 0 1 0 8 0 tcpcb 768 360 0 332 17 8 9 16 0 8 6 arp 120 31 0 18 1 0 1 1 0 8 0 inpcb 368 1089 0 1068 16 5 11 14 0 8 8 nd6 48 43 0 28 1 0 1 1 0 8 0 kcovpl 48 14 0 6 1 0 1 1 0 8 0 mppekey 1024 1 0 0 1 0 1 1 0 8 0 ppxss 1256 4 0 2 2 1 1 1 0 8 0 pffrag 232 2 0 1 1 0 1 1 0 482 0 pffrnode 88 2 0 1 1 0 1 1 0 8 0 pffrent 40 3 0 2 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 pfrktable 1344 20 0 20 1 1 0 1 0 8 0 pfanchor 1280 2 0 2 1 1 0 1 0 8 0 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 54 0 19 1 0 1 1 0 8 0 pfstkey 120 54 0 19 2 0 2 2 0 8 0 pfstate 336 54 0 19 4 0 4 4 0 8 0 pfrule 1360 28 0 22 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 768 0 444 29 0 29 29 0 8 6 art_table 32 769 0 444 4 0 4 4 0 8 0 art_node 16 181 0 110 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 223 0 213 1 0 1 1 0 8 0 shmpl 112 44 0 3 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2407 0 964 91 0 91 91 0 8 0 ffsino 272 2407 0 964 97 0 97 97 0 8 0 nchpl 144 3517 0 1869 63 0 63 63 0 8 0 uvmvnodes 80 2695 0 0 55 0 55 55 0 8 0 vnodes 216 2695 0 0 150 0 150 150 0 8 0 namei 1024 12964 0 12963 2 1 1 2 0 8 0 percpumem 16 52 0 13 1 0 1 1 0 8 0 pfiaddrpl 120 6 0 6 1 1 0 1 0 8 0 kstatmem 264 50 0 26 2 0 2 2 0 8 0 scxspl 216 10314 0 10314 9 8 1 8 0 8 1 plimitpl 152 143 0 128 1 0 1 1 0 8 0 sigapl 424 1130 0 1082 7 1 6 6 0 8 0 futexpl 64 6263 0 6260 1 0 1 1 0 8 0 knotepl 120 241 0 0 7 0 7 7 0 8 0 kqueuepl 216 189 0 180 5 4 1 5 0 8 0 pipepl 320 271 0 243 10 4 6 6 0 8 3 fdescpl 496 1112 0 1082 5 1 4 5 0 8 0 filepl 152 6723 0 6472 18 3 15 15 0 8 5 lockfpl 104 203 0 201 1 0 1 1 0 8 0 lockfspl 48 70 0 68 1 0 1 1 0 8 0 sessionpl 144 30 0 13 1 0 1 1 0 8 0 pgrppl 48 30 0 13 1 0 1 1 0 8 0 ucredpl 104 902 0 890 1 0 1 1 0 8 0 zombiepl 144 1082 0 1082 1 0 1 1 0 8 1 processpl 1064 1130 0 1082 4 0 4 4 0 8 0 procpl 672 2408 0 2340 9 2 7 8 0 8 0 srpgc 96 10 0 10 1 0 1 1 0 8 1 sosppl 168 9 0 9 2 1 1 1 0 8 1 sockpl 488 1806 0 1773 37 25 12 21 0 8 7 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 14 0 0 2 0 2 2 0 8 0 mcl4k 4096 15 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 485 0 0 60 0 60 60 0 8 0 mtagpl 96 127 0 0 4 0 4 4 0 8 0 mbufpl 256 518 0 0 32 0 32 32 0 8 0 bufpl 288 4646 0 136 323 0 323 323 0 8 0 anonpl 24 188603 0 172891 114 9 105 108 0 186 2 amapchunkpl 152 57731 0 56977 348 174 174 345 0 158 142 amappl16 200 2119 0 1596 30 2 28 29 0 8 0 amappl15 192 321 0 313 1 0 1 1 0 8 0 amappl14 184 32 0 28 2 1 1 1 0 8 0 amappl13 176 227 0 225 1 0 1 1 0 8 0 amappl12 168 162 0 154 1 0 1 1 0 8 0 amappl11 160 107 0 87 2 0 2 2 0 8 0 amappl10 152 134 0 129 1 0 1 1 0 8 0 amappl9 144 545 0 539 1 0 1 1 0 8 0 amappl8 136 727 0 667 3 0 3 3 0 8 0 amappl7 128 182 0 162 1 0 1 1 0 8 0 amappl6 120 298 0 284 2 1 1 2 0 8 0 amappl5 112 616 0 594 1 0 1 1 0 8 0 amappl4 104 1006 0 979 2 0 2 2 0 8 0 amappl3 96 2819 0 2761 2 0 2 2 0 8 0 amappl2 88 772 0 731 2 0 2 2 0 8 0 amappl1 80 28861 0 28181 20 4 16 20 0 8 0 amappl 88 5950 0 5765 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 46 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1112 0 1082 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1112 0 1082 1 0 1 1 0 8 0 vmmpekpl 168 13205 0 13151 3 0 3 3 0 8 0 vmmpepl 168 112440 0 109838 150 24 126 147 0 357 7 vmsppl 368 1111 0 1082 4 1 3 4 0 8 0 rwobjpl 56 30553 0 26254 63 1 62 62 0 8 0 pdppl 4096 2231 0 2164 143 74 69 79 0 8 2 pvpl 32 493335 0 473313 256 35 221 255 0 265 45 pmappl 248 1111 0 1082 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 819 0 85 21 0 21 21 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace rc4_keysetup(ffff8000277d22fa,ffff8000277d240c,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff8000277d22c0,ffff9851,2615,ffff800000c5fe6c,ffff9851) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff8000247685f8,ffff800000c5fc00) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff8000247685f8,ffff800000c5fc00) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000c5fc00,1,ffff8000ffff57a8) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1316 [inline] pppacioctl(4086334,82907003,ffff800000c5fc00,1,ffff8000ffff57a8) at pppacioctl+0x156 sys/net/if_pppx.c:1166 VOP_IOCTL(fffffd8068bf7540,82907003,ffff800000c5fc00,1,fffffd807f7d7410,ffff8000ffff57a8) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067958ee0,82907003,ffff800000c5fc00,ffff8000ffff57a8) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000ffff57a8,ffff800024768948,ffff800024768990) at sys_ioctl+0x4a2 syscall(ffff800024768a10) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800024768a10) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x59bd21367b0, 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 __mp_lock(ffffffff82a18280) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a18280) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82a18280,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3bb sys/kern/sched_bsd.c:415 sleep_finish(ffff800027a29ff0,1) at sleep_finish+0x180 sys/kern/kern_synch.c:417 tsleep(fffffd80675cec98,11,ffffffff8261fd89,0) at tsleep+0x12c sys/kern/kern_synch.c:155 biowait(fffffd80675cec98) at biowait+0x91 sys/kern/vfs_bio.c:1268 bwrite(fffffd80675cec98) at bwrite+0x21b sys/kern/vfs_bio.c:769 VOP_BWRITE(fffffd80675cec98) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800027a2a2f0) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd80660be548,ffff800027a2a450,ffff800027a2a480,ffff800027a2a380) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff800021318550,ffffff9c,7f7ffffe2a40,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff800027a2a600) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800027a2a600) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe2ab0, count: -16