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(ffff8000261c9e3a,ffff8000261c9f4c,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff8000261c9e00,ffffdc60,6c59,ffff800000dae26c,ffffdc60) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff80002ba62248,ffff800000dae000) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002ba62248,ffff800000dae000) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4486337,82907003,ffff800000dae000,1,ffff80002660e7f0) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4486337,82907003,ffff800000dae000,1,ffff80002660e7f0) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd80667a3cc0,82907003,ffff800000dae000,1,fffffd807f7d73a8,ffff80002660e7f0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8063a49e60,82907003,ffff800000dae000,ffff80002660e7f0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002660e7f0,ffff80002ba62598,ffff80002ba625e0) at sys_ioctl+0x4a2 syscall(ffff80002ba62660) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002ba62660) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe6e980d7390, count: -9 ddb{0}> show registers rdi 0xffff80002620a000 rsi 0 rbp 0xffff80002ba620d0 rbx 0 rdx 0 rcx 0 rax 0x1 r8 0x60 r9 0x2f2d33bf r10 0x93632da757bb7e39 r11 0x6307aa2153cd6f77 r12 0xffff8000261c9f4c r13 0 r14 0xffff8000261c9e3a r15 0 rip 0xffffffff818d060f rc4_keysetup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002ba62070 ss 0x10 rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb{0}> show proc PROC (syz-executor.6) pid=356044 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff80002660fcf0,0xffff80002660f520 process=0xffff8000ffff2160 user=0xffff80002ba5d000, vmspace=0xfffffd807146a5e0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 30642 187481 42102 0 2 0 syz-executor.5 30642 331049 42102 0 3 0x4000080 wsevent_read syz-executor.5 1026 395977 90253 0 2 0 syz-executor.2 1026 407134 90253 0 3 0x4000080 fsleep syz-executor.2 27329 410441 73688 0 2 0 syz-executor.6 *27329 356044 73688 0 7 0x4000000 syz-executor.6 60430 60575 5092 0 2 0 syz-executor.3 60430 34290 5092 0 3 0x4000080 fsleep syz-executor.3 55246 442375 93934 0 2 0 syz-executor.0 55246 346420 93934 0 3 0x4000080 fsleep syz-executor.0 13852 405514 44886 0 2 0 syz-executor.4 13852 170138 44886 0 3 0x4000080 fsleep syz-executor.4 90253 302300 7568 0 3 0x82 nanoslp syz-executor.2 42102 448755 7568 0 3 0x82 nanoslp syz-executor.5 14058 77683 7568 0 2 0x2 syz-executor.7 5092 198986 7568 0 3 0x82 nanoslp syz-executor.3 93934 334885 7568 0 3 0x82 nanoslp syz-executor.0 44886 198183 7568 0 3 0x82 nanoslp syz-executor.4 94826 144766 0 0 3 0x14200 acct acct 84374 321251 7568 0 3 0x82 nanoslp syz-executor.1 43805 40018 1 0 3 0x100083 ttyin getty 73688 415954 7568 0 3 0x82 nanoslp syz-executor.6 77288 242439 0 0 3 0x14280 nfsidl nfsio 70984 82249 0 0 3 0x14280 nfsidl nfsio 76755 88331 0 0 3 0x14280 nfsidl nfsio 39351 26162 0 0 3 0x14280 nfsidl nfsio 47998 421818 0 0 3 0x14280 nfsidl nfsio 39946 382047 0 0 3 0x14280 nfsidl nfsio 14971 461905 0 0 3 0x14280 nfsidl nfsio 98763 368753 0 0 3 0x14280 nfsidl nfsio 21480 87779 0 0 3 0x14280 nfsidl nfsio 88936 196530 0 0 3 0x14280 nfsidl nfsio 36163 103999 0 0 3 0x14280 nfsidl nfsio 98936 393620 0 0 3 0x14280 nfsidl nfsio 89361 173626 0 0 3 0x14280 nfsidl nfsio 33672 402217 0 0 3 0x14280 nfsidl nfsio 94210 401304 0 0 3 0x14280 nfsidl nfsio 50971 129057 0 0 3 0x14280 nfsidl nfsio 35882 346521 0 0 3 0x14280 nfsidl nfsio 88971 264673 0 0 3 0x14280 nfsidl nfsio 93122 290269 0 0 3 0x14280 nfsidl nfsio 74470 380997 0 0 3 0x14280 nfsidl nfsio 78233 511562 0 0 3 0x14200 bored sosplice 7568 351408 97909 0 3 0x82 thrsleep syz-fuzzer 7568 19682 97909 0 3 0x4000082 nanoslp syz-fuzzer 7568 33599 97909 0 3 0x4000082 wait syz-fuzzer 7568 185904 97909 0 3 0x4000082 thrsleep syz-fuzzer 7568 287111 97909 0 3 0x4000082 thrsleep syz-fuzzer 7568 495332 97909 0 3 0x4000082 wait syz-fuzzer 7568 124205 97909 0 3 0x4000082 nanoslp syz-fuzzer 7568 93488 97909 0 3 0x4000082 thrsleep syz-fuzzer 7568 376698 97909 0 3 0x4000082 wait syz-fuzzer 7568 395990 97909 0 3 0x4000082 wait syz-fuzzer 7568 70093 97909 0 3 0x4000082 kqread syz-fuzzer 7568 276681 97909 0 3 0x4000082 wait syz-fuzzer 7568 135699 97909 0 3 0x4000082 wait syz-fuzzer 7568 136848 97909 0 3 0x4000082 wait syz-fuzzer 7568 8006 97909 0 3 0x4000082 thrsleep syz-fuzzer 7568 462585 97909 0 3 0x4000082 wait syz-fuzzer 97909 33918 29247 0 3 0x10008a sigsusp ksh 29247 79479 50394 0 3 0x9a kqread sshd 50394 301750 1 0 3 0x88 kqread sshd 80392 442160 75856 74 3 0x1100092 bpf pflogd 75856 491927 1 0 3 0x80 netio pflogd 40726 513701 54953 73 3 0x1100090 kqread syslogd 54953 112418 1 0 3 0x100082 netio syslogd 24448 417482 1 0 3 0x100080 kqread resolvd 61791 216482 0 0 3 0x14200 bored smr 81941 95552 0 0 2 0x14200 zerothread 35642 238051 0 0 3 0x14200 aiodoned aiodoned 25561 76912 0 0 3 0x14200 syncer update 30118 210998 0 0 3 0x14200 cleaner cleaner 61981 367872 0 0 3 0x14200 reaper reaper 66551 139079 0 0 3 0x14200 pgdaemon pagedaemon 40888 16684 0 0 3 0x14200 bored viomb 76225 523485 0 0 3 0x40014200 acpi0 acpi0 49393 5501 0 0 7 0x40014200 idle1 48371 2157 0 0 3 0x14200 bored softnet 25890 334742 0 0 3 0x14200 bored softnet 78202 258179 0 0 3 0x14200 bored softnet 94897 41308 0 0 3 0x14200 bored softnet 31539 361890 0 0 3 0x14200 bored systqmp 30150 11521 0 0 3 0x14200 bored systq 40797 89787 0 0 3 0x40014200 bored softclock 6945 343177 0 0 3 0x40014200 idle0 1 155775 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10225 6509K 8087K 78643K 24776 0 pcb 13 18K 23K 78643K 3275 0 rtable 209 23K 24K 78643K 3492 0 ifaddr 112 23K 26K 78643K 1422 0 sysctl 2 0K 2K 78643K 80 0 counters 56 35K 36K 78643K 526 0 ioctlops 1 1K 4K 78643K 4725 0 iov 0 0K 32K 78643K 8741 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1537 96K 96K 78643K 7612 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 3 5K 9K 78643K 192 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1099 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 85K 78643K 19553 0 sigio 0 0K 0K 78643K 458 0 proc 69 67K 115K 78643K 2723 0 subproc 104 6K 6K 78643K 793 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 868 0 in_multi 66 4K 6K 78643K 1259 0 ether_multi 1 0K 0K 78643K 155 0 mrt 1 0K 0K 78643K 211 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 4500 0 pfkey data 0 0K 0K 78643K 39 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 511 834K 1410K 78643K 113700 0 UVM aobj 131 4K 4K 78643K 137 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 506 0 NDP 19 0K 1K 78643K 399 0 temp 156 4727K 70263K 78643K 223862 0 kqueue 6 10K 28K 78643K 1633 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 1147 0 1146 13 12 1 3 0 8 0 rtentry 112 1008 0 942 4 1 3 4 0 8 0 unpcb 144 15067 0 15059 165 162 3 10 0 8 2 syncache 296 38 0 38 10 10 0 1 0 8 0 tcpqe 32 174 0 174 4 4 0 2 0 8 0 tcpcb 768 6476 0 6471 248 244 4 22 0 8 3 arp 120 136 0 124 1 0 1 1 0 8 0 inpcb 368 16493 0 16489 284 280 4 16 0 8 3 nd6 48 265 0 250 1 0 1 1 0 8 0 pkpcb 40 378 0 378 22 22 0 2 0 8 0 kcovpl 48 61 0 53 1 0 1 1 0 8 0 mppekey 1024 1 0 0 1 0 1 1 0 8 0 ppxss 1256 145 0 143 23 22 1 1 0 8 0 pfstscr 40 53 0 53 5 5 0 1 0 8 0 pffrag 232 106 0 103 9 8 1 1 0 482 0 pffrnode 88 105 0 102 9 8 1 1 0 8 0 pffrent 40 417 0 414 10 9 1 1 0 8 0 pfosfp 40 1434 0 1009 5 0 5 5 0 8 0 pfosfpen 112 1434 0 718 21 0 21 21 0 8 0 pfrktable 1344 196 0 186 8 7 1 2 0 8 0 pfanchor 1280 204 0 4 17 0 17 17 0 8 0 pftag 88 15 0 8 2 1 1 1 0 8 0 pfstitem 24 112 0 109 1 0 1 1 0 8 0 pfstkey 120 200 0 197 1 0 1 1 0 8 0 pfstate 336 147 0 144 4 3 1 3 0 8 0 pfrule 1360 226 0 168 8 3 5 5 0 8 0 rttmr 136 62 0 62 8 8 0 1 0 8 0 art_heap8 4096 8 0 7 6 5 1 3 0 8 0 art_heap4 256 5841 0 5528 76 52 24 30 0 8 0 art_table 32 5849 0 5535 5 1 4 4 0 8 0 art_node 16 993 0 936 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 1097 0 1087 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 26117 0 24615 95 0 95 95 0 8 0 ffsino 272 26117 0 24615 101 0 101 101 0 8 0 nchpl 144 51855 0 51308 63 40 23 63 0 8 0 rtmask 32 2 0 2 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 203893 0 203893 7 6 1 2 0 8 1 percpumem 16 275 0 235 1 0 1 1 0 8 0 vcpupl 2048 140 0 0 18 0 18 18 0 8 0 vmpool 568 171 0 31 12 2 10 11 0 8 0 pfiaddrpl 120 80 0 57 1 0 1 1 0 8 0 kstatmem 264 420 0 382 4 1 3 3 0 8 0 scsiplug 72 17 0 17 6 6 0 1 0 8 0 scxspl 216 147879 0 147879 29 28 1 8 0 8 1 plimitpl 152 4029 0 4014 1 0 1 1 0 8 0 sigapl 424 19842 0 19776 10 2 8 8 0 8 0 futexpl 64 182563 0 182559 4 3 1 1 0 8 0 knotepl 120 1167 0 0 17 2 15 17 0 8 0 kqueuepl 216 3758 0 3753 45 41 4 5 0 8 3 pipepl 320 3676 0 3648 90 87 3 14 0 8 0 fdescpl 496 19740 0 19714 6 2 4 5 0 8 0 filepl 152 142618 0 142391 267 253 14 24 0 8 4 lockfpl 104 5211 0 5210 7 6 1 2 0 8 0 lockfspl 48 1339 0 1338 1 0 1 1 0 8 0 sessionpl 144 84 0 68 1 0 1 1 0 8 0 pgrppl 48 241 0 225 1 0 1 1 0 8 0 ucredpl 104 17442 0 17430 1 0 1 1 0 8 0 zombiepl 144 19777 0 19776 4 3 1 1 0 8 0 processpl 1064 19842 0 19776 5 0 5 5 0 8 0 procpl 672 54203 0 54116 31 21 10 10 0 8 1 srpgc 96 98 0 98 30 30 0 1 0 8 0 sosppl 168 196 0 195 35 34 1 1 0 8 0 sockpl 488 33089 0 33075 765 757 8 32 0 8 5 mcl64k 65536 33 0 0 5 2 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 33 0 0 2 0 2 2 0 8 0 mcl9k 9216 20 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 34 0 0 4 1 3 3 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 420 0 0 46 29 17 46 0 8 0 mtagpl 96 1117 0 0 26 4 22 26 0 8 1 mbufpl 256 7170 0 0 411 0 411 411 0 8 0 bufpl 288 32709 0 26377 453 0 453 453 0 8 0 anonpl 24 3855615 0 3833841 418 266 152 186 0 186 6 amapchunkpl 152 426010 0 425241 743 625 118 346 0 158 83 amappl16 200 58159 0 57283 265 214 51 63 0 8 1 amappl15 192 3645 0 3635 1 0 1 1 0 8 0 amappl14 184 2475 0 2466 1 0 1 1 0 8 0 amappl13 176 3744 0 3742 1 0 1 1 0 8 0 amappl12 168 2218 0 2213 1 0 1 1 0 8 0 amappl11 160 1268 0 1256 1 0 1 1 0 8 0 amappl10 152 3819 0 3812 1 0 1 1 0 8 0 amappl9 144 3140 0 3138 1 0 1 1 0 8 0 amappl8 136 3748 0 3598 6 0 6 6 0 8 0 amappl7 128 2147 0 2122 1 0 1 1 0 8 0 amappl6 120 3182 0 3163 2 1 1 2 0 8 0 amappl5 112 18432 0 18413 1 0 1 1 0 8 0 amappl4 104 5706 0 5671 4 2 2 3 0 8 0 amappl3 96 61189 0 61144 3 1 2 2 0 8 0 amappl2 88 6215 0 6177 2 0 2 2 0 8 0 amappl1 80 484964 0 484325 23 8 15 20 0 8 0 amappl 88 111725 0 111493 7 1 6 6 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 19912 0 19746 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 19912 0 19746 2 0 2 2 0 8 0 vmmpekpl 168 142842 0 142754 7 2 5 5 0 8 0 vmmpepl 168 1926582 0 1923431 440 289 151 164 0 357 0 vmsppl 368 19911 0 19746 19 3 16 16 0 8 0 rwobjpl 56 472379 0 464336 156 39 117 119 0 8 0 pdppl 4096 39831 0 39632 1291 1088 203 205 0 8 4 pvpl 32 7289968 0 7268099 641 432 209 294 0 265 8 pmappl 248 19911 0 19746 12 1 11 11 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2865 0 1497 41 1 40 40 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace rc4_keysetup(ffff8000261c9e3a,ffff8000261c9f4c,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff8000261c9e00,ffffdc60,6c59,ffff800000dae26c,ffffdc60) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff80002ba62248,ffff800000dae000) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002ba62248,ffff800000dae000) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4486337,82907003,ffff800000dae000,1,ffff80002660e7f0) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4486337,82907003,ffff800000dae000,1,ffff80002660e7f0) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd80667a3cc0,82907003,ffff800000dae000,1,fffffd807f7d73a8,ffff80002660e7f0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8063a49e60,82907003,ffff800000dae000,ffff80002660e7f0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002660e7f0,ffff80002ba62598,ffff80002ba625e0) at sys_ioctl+0x4a2 syscall(ffff80002ba62660) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002ba62660) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe6e980d7390, 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