kernel: integer divide fault trap, code=0 Stopped at rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace rc4_keysetup(ffff800022fe1862,ffff800022fe1974,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff800022fe1848,ffffaebc,45ff,ffff800000ddd66c,ffffaebc) at pipex_mppe_init+0x207 sys/net/pipex.c:2319 pipex_init_session(ffff800023019a38,ffff800000ddd400) at pipex_init_session+0x5d6 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff800023019a38,ffff800000ddd400) at pipex_init_session+0x5d6 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000ddd400,1,ffff80002520efd0) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086334,82907003,ffff800000ddd400,1,ffff80002520efd0) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd80730c5398,82907003,ffff800000ddd400,1,fffffd807f7d7478,ffff80002520efd0) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8069aa53d8,82907003,ffff800000ddd400,ffff80002520efd0) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002520efd0,ffff800023019d88,ffff800023019de0) at sys_ioctl+0x49e syscall(ffff800023019e50) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xebc0b975dd0, count: -9 ddb> show registers rdi 0xffff80002b478000 rsi 0 rbp 0xffff8000230198c0 rbx 0 rdx 0 rcx 0 rax 0x1 r8 0x60 r9 0x2f2d33bf r10 0x77e712b8cd1efa6f r11 0xca5671f32c51b4f0 r12 0xffff800022fe1974 r13 0 r14 0xffff800022fe1862 r15 0 rip 0xffffffff8187e55f rc4_keysetup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023019860 ss 0x10 rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb> show proc PROC (syz-executor.7) pid=427598 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff80002520f510,0xffff80002520fd00 process=0xffff8000216fb790 user=0xffff800023014000, vmspace=0xfffffd805b785670 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 90800 225412 74670 0 2 0 syz-executor.0 90800 192829 74670 0 3 0x4000080 fsleep syz-executor.0 90800 485782 74670 0 3 0x4000080 fsleep syz-executor.0 20788 264499 61522 0 2 0 syz-executor.7 *20788 427598 61522 0 7 0x4000000 syz-executor.7 34941 160481 6215 0 3 0x80 nanoslp syz-executor.1 34941 281366 6215 0 3 0x4000080 lockf syz-executor.1 26925 191176 45120 0 2 0 syz-executor.5 26925 392365 45120 0 3 0x4000080 netio syz-executor.5 26925 401454 45120 0 3 0x4000080 fsleep syz-executor.5 33577 72689 29491 0 3 0x2 biowait syz-executor.6 90159 186537 29491 0 3 0x82 nanoslp syz-executor.4 74670 44223 29491 0 3 0x82 nanoslp syz-executor.0 45120 224898 29491 0 3 0x82 nanoslp syz-executor.5 73828 6383 29491 0 3 0x82 piperd syz-executor.3 61522 340288 29491 0 3 0x82 nanoslp syz-executor.7 24748 55999 29491 0 2 0x2 syz-executor.2 6215 24308 29491 0 3 0x82 nanoslp syz-executor.1 24504 363459 1 0 3 0x100083 ttyin getty 71007 115729 0 0 3 0x14200 acct acct 58465 463652 0 0 3 0x14200 bored sosplice 29491 41155 98176 0 3 0x82 thrsleep syz-fuzzer 29491 221291 98176 0 3 0x4000082 nanoslp syz-fuzzer 29491 88361 98176 0 3 0x4000082 thrsleep syz-fuzzer 29491 111783 98176 0 3 0x4000082 wait syz-fuzzer 29491 239579 98176 0 3 0x4000082 wait syz-fuzzer 29491 219169 98176 0 3 0x4000082 wait syz-fuzzer 29491 286960 98176 0 3 0x4000082 wait syz-fuzzer 29491 125662 98176 0 3 0x4000082 thrsleep syz-fuzzer 29491 371179 98176 0 3 0x4000082 kqread syz-fuzzer 29491 22853 98176 0 3 0x4000082 wait syz-fuzzer 29491 240214 98176 0 3 0x4000082 thrsleep syz-fuzzer 29491 209468 98176 0 3 0x4000082 wait syz-fuzzer 29491 437125 98176 0 3 0x4000082 wait syz-fuzzer 29491 400499 98176 0 3 0x4000082 wait syz-fuzzer 98176 207954 34464 0 3 0x10008a sigsusp ksh 34464 333703 9013 0 3 0x9a kqread sshd 9013 38040 1 0 3 0x88 kqread sshd 19180 340140 93799 73 3 0x1100090 kqread syslogd 93799 295376 1 0 3 0x100082 netio syslogd 26014 365935 1 0 3 0x100080 kqread resolvd 34532 107 33358 77 3 0x100092 kqread dhcpleased 94701 67884 33358 77 3 0x100092 kqread dhcpleased 33358 311862 1 0 3 0x80 kqread dhcpleased 28332 212324 0 0 3 0x14200 bored smr 7138 292275 0 0 2 0x14200 zerothread 37490 309127 0 0 3 0x14200 aiodoned aiodoned 70709 326336 0 0 3 0x14200 syncer update 53718 45750 0 0 3 0x14200 cleaner cleaner 9690 444238 0 0 3 0x14200 reaper reaper 69086 86307 0 0 3 0x14200 pgdaemon pagedaemon 7461 212798 0 0 3 0x14200 bored viomb 2331 418928 0 0 3 0x40014200 acpi0 acpi0 13561 238176 0 0 3 0x14200 bored softnet 37177 66123 0 0 3 0x14200 bored softnet 10351 168205 0 0 3 0x14200 bored softnet 82194 125282 0 0 3 0x14200 bored softnet 22624 206174 0 0 3 0x14200 bored systqmp 30147 137165 0 0 3 0x14200 bored systq 73606 268475 0 0 3 0x40014200 bored softclock 20951 332906 0 0 3 0x40014200 idle0 1 23667 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 10225 6577K 7202K 78643K 48898 0 pcb 13 22K 26K 78643K 7034 0 rtable 230 24K 27K 78643K 4553 0 ifaddr 118 30K 33K 78643K 1719 0 sysctl 3 1K 1K 78643K 5 0 counters 29 17K 17K 78643K 392 0 ioctlops 1 1K 4K 78643K 5579 0 iov 1 16K 28K 78643K 3199 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1507 94K 95K 78643K 15575 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 13K 78643K 161 0 VM map 2 0K 0K 78643K 2 0 sem 13 16K 32K 78643K 323 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 77K 78643K 21358 0 sigio 0 0K 0K 78643K 1486 0 proc 64 59K 75K 78643K 3879 0 subproc 104 6K 6K 78643K 1331 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 11113 0 in_multi 64 4K 7K 78643K 1442 0 ether_multi 1 0K 0K 78643K 87 0 mrt 1 0K 0K 78643K 104 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 5652 0 pfkey data 0 0K 0K 78643K 10 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 579 1656K 1656K 78643K 116243 0 UVM aobj 134 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 1358 0 NDP 17 0K 2K 78643K 517 0 temp 148 4734K 5742K 78643K 257181 0 kqueue 12 18K 26K 78643K 1731 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 1848 0 1845 24 23 1 3 0 8 0 rtentry 112 1412 0 1335 4 1 3 4 0 8 0 unpcb 144 14903 0 14890 164 163 1 8 0 8 0 syncache 296 123 0 123 28 28 0 1 0 8 0 tcpqe 32 101 11 101 10 10 0 1 0 8 0 tcpcb 768 28321 0 28306 624 616 8 30 0 8 4 arp 88 224 0 209 1 0 1 1 0 8 0 ipq 40 4 0 4 4 4 0 1 0 8 0 ipqe 40 142 0 142 4 4 0 1 0 8 0 inpcb 336 45936 0 45926 426 419 7 18 0 8 5 nd6 48 403 0 387 1 0 1 1 0 8 0 pkpcb 40 58 0 58 11 11 0 1 0 8 0 kcovpl 48 101 0 93 1 0 1 1 0 8 0 mppekey 1024 1 0 0 1 0 1 1 0 8 0 ppxss 1160 200 0 198 24 23 1 1 0 8 0 pfstscr 40 7 0 3 1 0 1 1 0 8 0 pfosfp 40 2 0 1 1 0 1 1 0 8 0 pfosfpen 112 2 0 0 1 0 1 1 0 8 0 pfrktable 1344 87 0 71 4 2 2 2 0 8 0 pfanchor 1280 266 0 159 9 0 9 9 0 8 0 pftag 88 7 0 3 2 1 1 1 0 8 0 pfstitem 24 9 0 4 1 0 1 1 0 8 0 pfstkey 120 15 0 13 1 0 1 1 0 8 0 pfstate 336 9 0 5 1 0 1 1 0 8 0 pfrule 1360 329 0 280 6 1 5 5 0 8 0 rttmr 136 24 0 24 7 7 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 6691 0 6393 77 52 25 29 0 8 2 art_table 32 6692 0 6393 6 2 4 4 0 8 0 art_node 16 1404 0 1337 1 0 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 317 0 306 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 30565 0 29071 94 0 94 94 0 8 0 ffsino 240 30565 0 29071 89 0 89 89 0 8 0 nchpl 144 58908 0 57271 63 0 63 63 0 8 0 rtmask 32 13 0 13 4 4 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 220101 0 220099 16 15 1 2 0 8 0 vcpupl 2048 308 0 0 39 0 39 39 0 8 0 vmpool 536 341 0 33 22 1 21 21 0 8 0 pfiaddrpl 120 64 0 21 4 2 2 2 0 8 0 kstatmem 264 592 0 558 4 1 3 3 0 8 0 scsiplug 72 87 0 87 5 5 0 1 0 8 0 scxspl 216 171535 0 171534 54 51 3 8 0 8 2 plimitpl 152 2260 0 2246 1 0 1 1 0 8 0 sigapl 424 21470 0 21426 6 0 6 6 0 8 0 futexpl 64 226405 0 226402 7 6 1 1 0 8 0 knotepl 120 305058 0 304978 129 122 7 15 0 8 3 kqueuepl 184 4890 0 4882 75 74 1 7 0 8 0 pipepl 288 5452 0 5424 120 117 3 10 0 8 0 fdescpl 432 21451 0 21426 4 0 4 4 0 8 0 filepl 120 181119 0 180879 222 210 12 16 0 8 4 lockfpl 104 5768 0 5762 14 13 1 2 0 8 0 lockfspl 48 1461 0 1456 1 0 1 1 0 8 0 sessionpl 144 125 0 109 1 0 1 1 0 8 0 pgrppl 48 245 0 229 1 0 1 1 0 8 0 ucredpl 104 22345 0 22335 1 0 1 1 0 8 0 zombiepl 144 21427 0 21426 6 5 1 1 0 8 0 processpl 1000 21470 0 21426 7 1 6 7 0 8 0 procpl 672 53917 0 53854 13 6 7 8 0 8 0 sosppl 168 182 0 182 28 28 0 1 0 8 0 sockpl 456 62800 0 62774 1206 1194 12 34 0 8 7 mcl64k 65536 726 0 726 39 38 1 1 0 8 1 mcl16k 16384 230 0 230 53 52 1 1 0 8 1 mcl12k 12288 664 0 664 41 40 1 1 0 8 1 mcl9k 9216 266 0 266 51 50 1 1 0 8 1 mcl8k 8192 896 0 896 39 38 1 1 0 8 1 mcl4k 4096 2285 0 2285 17 16 1 1 0 8 1 mcl2k2 2112 152 0 152 57 57 0 1 0 8 0 mcl2k 2048 114117 0 114059 36 27 9 14 0 8 0 mtagpl 96 2464 0 2350 28 20 8 10 0 8 1 mbufpl 256 377417 0 377102 532 501 31 440 0 8 1 bufpl 288 38969 0 32565 458 0 458 458 0 8 0 anonpl 24 4085271 0 4065259 385 229 156 166 0 188 13 amapchunkpl 152 368217 0 367364 172 132 40 56 0 158 4 amappl16 200 62925 0 62229 280 230 50 62 0 8 11 amappl15 192 4400 0 4392 1 0 1 1 0 8 0 amappl14 184 750 0 749 1 0 1 1 0 8 0 amappl13 176 2724 0 2722 1 0 1 1 0 8 0 amappl12 168 1424 0 1413 1 0 1 1 0 8 0 amappl11 160 4707 0 4693 5 4 1 2 0 8 0 amappl10 152 1895 0 1888 1 0 1 1 0 8 0 amappl9 144 4636 0 4625 1 0 1 1 0 8 0 amappl8 136 4424 0 4311 5 1 4 4 0 8 0 amappl7 128 2489 0 2469 1 0 1 1 0 8 0 amappl6 120 4985 0 4967 2 1 1 2 0 8 0 amappl5 112 17053 0 17039 1 0 1 1 0 8 0 amappl4 104 11317 0 11289 6 5 1 2 0 8 0 amappl3 96 62746 0 62688 2 0 2 2 0 8 0 amappl2 88 4110 0 4067 4 3 1 2 0 8 0 amappl1 80 522005 0 521386 23 8 15 20 0 8 0 amappl 88 113748 0 113479 7 0 7 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 72 136 0 3 3 0 3 3 0 8 0 uaddrrnd 24 21792 0 21459 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 21792 0 21459 3 0 3 3 0 8 0 vmmpekpl 168 148942 0 148857 4 0 4 4 0 8 0 vmmpepl 168 2106022 0 2102930 483 322 161 169 0 357 11 vmsppl 272 21791 0 21459 24 1 23 23 0 8 0 rwobjpl 24 498952 0 491058 55 5 50 51 0 8 0 pdppl 4096 43590 0 43226 1363 991 372 372 0 8 8 pvpl 32 8044287 0 8023267 683 458 225 244 0 265 28 pmappl 216 21791 0 21459 20 1 19 19 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 3437 0 2270 45 11 34 38 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace rc4_keysetup(ffff800022fe1862,ffff800022fe1974,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff800022fe1848,ffffaebc,45ff,ffff800000ddd66c,ffffaebc) at pipex_mppe_init+0x207 sys/net/pipex.c:2319 pipex_init_session(ffff800023019a38,ffff800000ddd400) at pipex_init_session+0x5d6 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff800023019a38,ffff800000ddd400) at pipex_init_session+0x5d6 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000ddd400,1,ffff80002520efd0) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086334,82907003,ffff800000ddd400,1,ffff80002520efd0) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd80730c5398,82907003,ffff800000ddd400,1,fffffd807f7d7478,ffff80002520efd0) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8069aa53d8,82907003,ffff800000ddd400,ffff80002520efd0) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002520efd0,ffff800023019d88,ffff800023019de0) at sys_ioctl+0x49e syscall(ffff800023019e50) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xebc0b975dd0, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace rc4_keysetup(ffff800022fe1862,ffff800022fe1974,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff800022fe1848,ffffaebc,45ff,ffff800000ddd66c,ffffaebc) at pipex_mppe_init+0x207 sys/net/pipex.c:2319 pipex_init_session(ffff800023019a38,ffff800000ddd400) at pipex_init_session+0x5d6 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff800023019a38,ffff800000ddd400) at pipex_init_session+0x5d6 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000ddd400,1,ffff80002520efd0) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086334,82907003,ffff800000ddd400,1,ffff80002520efd0) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd80730c5398,82907003,ffff800000ddd400,1,fffffd807f7d7478,ffff80002520efd0) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8069aa53d8,82907003,ffff800000ddd400,ffff80002520efd0) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002520efd0,ffff800023019d88,ffff800023019de0) at sys_ioctl+0x49e syscall(ffff800023019e50) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xebc0b975dd0, count: -9