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(ffff800021797802,ffff800021797914,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff8000217977e8,6161,6161,ffff800000d79e6c,6161) at pipex_mppe_init+0x207 sys/net/pipex.c:2319 pipex_init_session(ffff80002e9290f8,ffff800000d79c00) at pipex_init_session+0x5d6 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002e9290f8,ffff800000d79c00) at pipex_init_session+0x5d6 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000d79c00,1,ffff8000231e82a8) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086334,82907003,ffff800000d79c00,1,ffff8000231e82a8) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd806791aa38,82907003,ffff800000d79c00,1,fffffd807f7d7888,ffff8000231e82a8) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067004e18,82907003,ffff800000d79c00,ffff8000231e82a8) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000231e82a8,ffff80002e929448,ffff80002e9294a0) at sys_ioctl+0x49e syscall(ffff80002e929510) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x62640bb82b0, count: -9 ddb> show registers rdi 0xffff80002ceee000 rsi 0 rbp 0xffff80002e928f80 rbx 0 rdx 0 rcx 0 rax 0x1 r8 0x60 r9 0x2f2d33bf r10 0xbe0c74ac385f4d6a r11 0x8fb7916859855a58 r12 0xffff800021797914 r13 0 r14 0xffff800021797802 r15 0 rip 0xffffffff81455f0f rc4_keysetup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002e928f20 ss 0x10 rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb> show proc PROC (syz-executor.5) pid=409310 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff8000265faa88,0xffff8000231e8a98 process=0xffff800021798410 user=0xffff80002e924000, vmspace=0xfffffd8068459448 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 58033 415447 67989 0 2 0 syz-executor.5 *58033 409310 67989 0 7 0x4000000 syz-executor.5 26775 4758 67318 0 3 0x80 nanoslp syz-executor.1 26775 162049 67318 0 3 0x4000080 fsleep syz-executor.1 28719 81385 62172 0 2 0 syz-executor.0 28719 493298 62172 0 3 0x4000080 ttyout syz-executor.0 76899 47839 81296 0 3 0x80 nanoslp syz-executor.7 76899 36831 81296 0 3 0x4000080 fsleep syz-executor.7 57394 212766 46499 0 3 0x80 nanoslp syz-executor.2 57394 458669 46499 0 3 0x4000080 netio syz-executor.2 57394 313640 46499 0 3 0x4000080 fsleep syz-executor.2 45565 511733 27296 0 3 0x80 nanoslp syz-executor.3 45565 58697 27296 0 3 0x4000080 fsleep syz-executor.3 67318 494070 52394 0 3 0x82 nanoslp syz-executor.1 5407 50871 52394 0 2 0x2 syz-executor.4 62172 266946 52394 0 3 0x82 nanoslp syz-executor.0 46499 427219 52394 0 3 0x82 nanoslp syz-executor.2 81296 165616 52394 0 3 0x82 nanoslp syz-executor.7 98958 256925 1 0 3 0x100083 ttyin getty 67989 366635 52394 0 3 0x82 nanoslp syz-executor.5 27296 24213 52394 0 3 0x82 nanoslp syz-executor.3 57617 491462 0 0 3 0x14280 nfsidl nfsio 62012 288908 0 0 3 0x14280 nfsidl nfsio 86112 363580 0 0 3 0x14280 nfsidl nfsio 75491 92712 0 0 3 0x14280 nfsidl nfsio 13997 147776 0 0 3 0x14280 nfsidl nfsio 54155 332120 0 0 3 0x14280 nfsidl nfsio 44826 302042 0 0 3 0x14280 nfsidl nfsio 47889 510998 0 0 3 0x14280 nfsidl nfsio 29834 45730 0 0 3 0x14280 nfsidl nfsio 76499 358106 0 0 3 0x14280 nfsidl nfsio 78561 76593 0 0 3 0x14280 nfsidl nfsio 71488 328658 0 0 3 0x14280 nfsidl nfsio 68796 315836 0 0 3 0x14280 nfsidl nfsio 9870 466102 0 0 3 0x14280 nfsidl nfsio 36613 374375 0 0 3 0x14280 nfsidl nfsio 38194 82874 0 0 3 0x14280 nfsidl nfsio 61459 220857 0 0 3 0x14280 nfsidl nfsio 15758 486182 0 0 3 0x14280 nfsidl nfsio 31847 31046 0 0 3 0x14280 nfsidl nfsio 26476 24888 0 0 3 0x14280 nfsidl nfsio 28556 516512 52394 0 2 0x2 syz-executor.6 12726 265133 0 0 3 0x14200 bored sosplice 52394 107151 83083 0 3 0x82 wait syz-fuzzer 52394 138465 83083 0 3 0x4000082 nanoslp syz-fuzzer 52394 99753 83083 0 3 0x4000082 wait syz-fuzzer 52394 260488 83083 0 3 0x4000082 wait syz-fuzzer 52394 221430 83083 0 3 0x4000082 thrsleep syz-fuzzer 52394 99910 83083 0 3 0x4000082 thrsleep syz-fuzzer 52394 458535 83083 0 3 0x4000082 kqread syz-fuzzer 52394 277545 83083 0 3 0x4000082 thrsleep syz-fuzzer 52394 186122 83083 0 3 0x4000082 wait syz-fuzzer 52394 84443 83083 0 3 0x4000082 wait syz-fuzzer 52394 236542 83083 0 3 0x4000082 wait syz-fuzzer 52394 438604 83083 0 3 0x4000082 wait syz-fuzzer 52394 266384 83083 0 3 0x4000082 thrsleep syz-fuzzer 52394 479197 83083 0 3 0x4000082 wait syz-fuzzer 83083 272692 13987 0 3 0x10008a sigsusp ksh 13987 221736 33558 0 3 0x9a kqread sshd 33558 434265 1 0 3 0x88 kqread sshd 84166 185695 80119 73 3 0x1100090 kqread syslogd 80119 456821 1 0 3 0x100082 netio syslogd 72484 210274 1 0 3 0x100080 kqread resolvd 78976 311322 11515 77 3 0x100092 kqread dhcpleased 42127 515356 11515 77 3 0x100092 kqread dhcpleased 11515 7160 1 0 3 0x80 kqread dhcpleased 30053 105543 0 0 3 0x14200 bored smr 7624 299915 0 0 2 0x14200 zerothread 96683 255464 0 0 3 0x14200 aiodoned aiodoned 86564 516596 0 0 3 0x14200 syncer update 46596 223728 0 0 3 0x14200 cleaner cleaner 63612 522980 0 0 3 0x14200 reaper reaper 55427 190551 0 0 3 0x14200 pgdaemon pagedaemon 37517 431593 0 0 3 0x14200 bored viomb 87585 335471 0 0 3 0x40014200 acpi0 acpi0 93491 124245 0 0 3 0x14200 bored softnet 49817 325140 0 0 3 0x14200 bored softnet 74866 420524 0 0 3 0x14200 bored softnet 38027 522622 0 0 3 0x14200 bored softnet 13499 397746 0 0 3 0x14200 bored systqmp 76487 51760 0 0 3 0x14200 bored systq 25869 351108 0 0 3 0x40014200 bored softclock 18738 355928 0 0 3 0x40014200 idle0 1 425041 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 10202 6411K 6794K 78643K 22442 0 pcb 13 14K 16K 78643K 668 0 rtable 230 17K 20K 78643K 1150 0 ifaddr 99 19K 19K 78643K 488 0 sysctl 2 0K 0K 78643K 2 0 counters 29 17K 17K 78643K 216 0 ioctlops 1 1K 4K 78643K 1185 0 iov 0 0K 16K 78643K 815 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1564 98K 98K 78643K 6521 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 51 0 VM map 2 0K 0K 78643K 2 0 sem 13 5K 6K 78643K 201 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 85K 78643K 4470 0 sigio 0 0K 0K 78643K 140 0 proc 60 59K 83K 78643K 906 0 subproc 104 6K 6K 78643K 260 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 203 0 in_multi 77 5K 7K 78643K 313 0 ether_multi 1 0K 0K 78643K 21 0 mrt 1 0K 0K 78643K 13 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 187 837K 837K 78643K 187 0 exec 0 0K 2K 78643K 1690 0 pfkey data 0 0K 0K 78643K 13 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 372 575K 576K 78643K 26018 0 UVM aobj 61 6K 6K 78643K 70 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 2 0K 0K 78643K 292 0 NDP 15 0K 1K 78643K 106 0 temp 142 4718K 5742K 78643K 51314 0 kqueue 15 20K 24K 78643K 367 0 SYN cache 2 20K 28K 78643K 3 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 424 0 421 7 6 1 3 0 8 0 rtentry 112 292 0 205 6 3 3 4 0 8 0 unpcb 144 3043 0 3028 44 43 1 6 0 8 0 syncache 296 33 0 33 11 10 1 1 0 8 1 tcpqe 32 83 0 83 6 5 1 1 0 8 1 tcpcb 768 1400 0 1375 72 64 8 9 0 8 5 arp 88 45 0 31 1 0 1 1 0 8 0 ipq 40 10 0 9 4 3 1 1 0 8 0 ipqe 40 34 0 33 4 3 1 1 0 8 0 inpcb 336 3912 0 3899 81 74 7 17 0 8 5 nd6 48 72 0 55 1 0 1 1 0 8 0 pkpcb 40 25 0 25 3 3 0 1 0 8 0 kcovpl 48 20 0 12 1 0 1 1 0 8 0 mppekey 1024 1 0 0 1 0 1 1 0 8 0 ppxss 1160 160 0 158 6 5 1 1 0 8 0 pfstscr 40 35 0 34 1 0 1 1 0 8 0 pfosfp 40 70 0 68 1 0 1 1 0 8 0 pfosfpen 112 70 0 0 2 0 2 2 0 8 0 pfrke_plain 168 2 0 0 1 0 1 1 0 8 0 pfrktable 1344 110 0 99 6 5 1 2 0 8 0 pfanchor 1280 65 0 18 6 2 4 5 0 8 0 pftag 88 13 0 11 1 0 1 1 0 8 0 pfqueue 264 66 0 66 1 1 0 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 120 70 0 68 1 0 1 1 0 8 0 pfstate 336 35 0 34 1 0 1 1 0 8 0 pfrule 1360 136 0 95 7 3 4 4 0 8 0 rttmr 136 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1248 0 889 37 14 23 29 0 8 0 art_table 32 1249 0 889 4 1 3 4 0 8 0 art_node 16 291 0 212 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 7 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 197 0 186 1 0 1 1 0 8 0 shmpl 112 67 0 12 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 7359 0 5916 91 0 91 91 0 8 0 ffsino 240 7359 0 5916 86 0 86 86 0 8 0 nchpl 144 13442 0 11804 63 1 62 63 0 8 0 rtmask 32 14 0 13 4 3 1 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 49982 0 49981 5 4 1 2 0 8 0 vcpupl 2048 38 0 0 5 0 5 5 0 8 0 vmpool 536 38 0 0 3 0 3 3 0 8 0 pfiaddrpl 120 45 0 31 1 0 1 1 0 8 0 kstatmem 264 120 0 90 3 0 3 3 0 8 0 scsiplug 72 10 0 10 2 2 0 1 0 8 0 scxspl 216 45610 0 45610 20 19 1 8 0 8 1 plimitpl 152 669 0 655 1 0 1 1 0 8 0 sigapl 424 4754 0 4690 9 1 8 8 0 8 0 futexpl 64 45211 0 45207 5 4 1 1 0 8 0 knotepl 120 54379 0 54298 19 13 6 9 0 8 0 kqueuepl 184 732 0 719 10 9 1 7 0 8 0 pipepl 288 883 0 855 19 16 3 7 0 8 0 fdescpl 432 4717 0 4690 4 0 4 4 0 8 0 filepl 120 32968 0 32702 53 41 12 17 0 8 2 lockfpl 104 1458 0 1456 4 3 1 2 0 8 0 lockfspl 48 405 0 403 1 0 1 1 0 8 0 sessionpl 144 36 0 20 1 0 1 1 0 8 0 pgrppl 48 41 0 25 1 0 1 1 0 8 0 ucredpl 104 4355 0 4345 1 0 1 1 0 8 0 zombiepl 144 4690 0 4690 2 1 1 1 0 8 1 processpl 1000 4754 0 4690 11 2 9 9 0 8 0 procpl 672 11965 0 11881 19 10 9 9 0 8 1 sosppl 168 47 0 47 10 9 1 1 0 8 1 sockpl 456 7422 0 7391 207 194 13 28 0 8 8 mcl64k 65536 131 0 131 17 16 1 1 0 8 1 mcl16k 16384 56 0 56 16 15 1 1 0 8 1 mcl12k 12288 142 0 142 15 14 1 1 0 8 1 mcl9k 9216 51 0 51 14 13 1 1 0 8 1 mcl8k 8192 342 0 342 14 13 1 1 0 8 1 mcl4k 4096 398 0 398 10 9 1 1 0 8 1 mcl2k2 2112 32 0 32 13 12 1 1 0 8 1 mcl2k 2048 76726 0 76665 30 20 10 19 0 8 0 mtagpl 96 545 0 478 10 5 5 9 0 8 0 mbufpl 256 152642 0 152368 73 32 41 42 0 8 14 bufpl 288 11449 0 5045 458 0 458 458 0 8 0 anonpl 24 912102 0 893441 224 101 123 139 0 188 0 amapchunkpl 152 80412 0 79666 93 62 31 53 0 158 0 amappl16 200 12897 0 12183 92 49 43 49 0 8 0 amappl15 192 1569 0 1561 1 0 1 1 0 8 0 amappl14 184 236 0 232 1 0 1 1 0 8 0 amappl13 176 691 0 688 1 0 1 1 0 8 0 amappl12 168 283 0 274 1 0 1 1 0 8 0 amappl11 160 529 0 513 1 0 1 1 0 8 0 amappl10 152 27 0 24 1 0 1 1 0 8 0 amappl9 144 1743 0 1731 1 0 1 1 0 8 0 amappl8 136 956 0 881 3 0 3 3 0 8 0 amappl7 128 262 0 240 1 0 1 1 0 8 0 amappl6 120 1533 0 1514 2 1 1 2 0 8 0 amappl5 112 3823 0 3809 1 0 1 1 0 8 0 amappl4 104 1613 0 1578 2 1 1 2 0 8 0 amappl3 96 13656 0 13601 2 0 2 2 0 8 0 amappl2 88 1457 0 1421 2 1 1 2 0 8 0 amappl1 80 116074 0 115417 21 6 15 19 0 8 0 amappl 88 25147 0 24946 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 69 0 9 2 0 2 2 0 8 0 uaddrrnd 24 4755 0 4690 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4755 0 4690 1 0 1 1 0 8 0 vmmpekpl 168 37196 0 37127 4 0 4 4 0 8 0 vmmpepl 168 458072 0 455302 254 117 137 153 0 357 8 vmsppl 272 4754 0 4690 7 2 5 5 0 8 0 rwobjpl 24 116130 0 108380 49 1 48 49 0 8 0 pdppl 4096 9516 0 9418 325 223 102 102 0 8 4 pvpl 32 1869383 0 1849096 388 207 181 240 0 265 0 pmappl 216 4754 0 4690 4 0 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1290 0 443 25 0 25 25 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace rc4_keysetup(ffff800021797802,ffff800021797914,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff8000217977e8,6161,6161,ffff800000d79e6c,6161) at pipex_mppe_init+0x207 sys/net/pipex.c:2319 pipex_init_session(ffff80002e9290f8,ffff800000d79c00) at pipex_init_session+0x5d6 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002e9290f8,ffff800000d79c00) at pipex_init_session+0x5d6 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000d79c00,1,ffff8000231e82a8) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086334,82907003,ffff800000d79c00,1,ffff8000231e82a8) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd806791aa38,82907003,ffff800000d79c00,1,fffffd807f7d7888,ffff8000231e82a8) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067004e18,82907003,ffff800000d79c00,ffff8000231e82a8) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000231e82a8,ffff80002e929448,ffff80002e9294a0) at sys_ioctl+0x49e syscall(ffff80002e929510) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x62640bb82b0, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace rc4_keysetup(ffff800021797802,ffff800021797914,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff8000217977e8,6161,6161,ffff800000d79e6c,6161) at pipex_mppe_init+0x207 sys/net/pipex.c:2319 pipex_init_session(ffff80002e9290f8,ffff800000d79c00) at pipex_init_session+0x5d6 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002e9290f8,ffff800000d79c00) at pipex_init_session+0x5d6 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000d79c00,1,ffff8000231e82a8) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086334,82907003,ffff800000d79c00,1,ffff8000231e82a8) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd806791aa38,82907003,ffff800000d79c00,1,fffffd807f7d7888,ffff8000231e82a8) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067004e18,82907003,ffff800000d79c00,ffff8000231e82a8) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000231e82a8,ffff80002e929448,ffff80002e9294a0) at sys_ioctl+0x49e syscall(ffff80002e929510) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x62640bb82b0, count: -9