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(ffff80002e5ef2f2,ffff80002e5ef404,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff80002e5ef2b8,ffffe4ec,4d5a,ffff800000c7666c,ffffe4ec) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff80002e63b228,ffff800000c76400) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002e63b228,ffff800000c76400) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000c76400,1,ffff8000212f0a90) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086334,82907003,ffff800000c76400,1,ffff8000212f0a90) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd8065747568,82907003,ffff800000c76400,1,fffffd807f7d76e8,ffff8000212f0a90) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8065ba7270,82907003,ffff800000c76400,ffff8000212f0a90) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000212f0a90,ffff80002e63b578,ffff80002e63b5c0) at sys_ioctl+0x4a2 syscall(ffff80002e63b640) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002e63b640) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5be046c4e10, count: -9 ddb{0}> show registers rdi 0xffff800021b3d000 rsi 0 rbp 0xffff80002e63b0b0 rbx 0 rdx 0 rcx 0 rax 0x1 r8 0x60 r9 0x2f2d33bf r10 0xce444ebcd2ca11b1 r11 0xf59e7b73fdbb7548 r12 0xffff80002e5ef404 r13 0 r14 0xffff80002e5ef2f2 r15 0 rip 0xffffffff81b4bf7f rc4_keysetup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002e63b050 ss 0x10 rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb{0}> show proc PROC (syz-executor.4) pid=283933 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff8000212f1270,0xffffffff82af4740 process=0xffff8000ffff1908 user=0xffff80002e636000, vmspace=0xfffffd806a55a020 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 33252 181936 85319 0 2 0 syz-executor.4 *33252 283933 85319 0 7 0x4000000 syz-executor.4 85319 142129 53393 0 3 0x82 nanoslp syz-executor.4 25188 177284 53393 0 3 0x82 nanoslp syz-executor.0 49526 162995 53393 0 3 0x82 nanoslp syz-executor.3 66256 499664 53393 0 3 0x82 nanoslp syz-executor.1 76778 39436 53393 0 3 0x82 piperd syz-executor.6 91759 291160 53393 0 3 0x82 piperd syz-executor.5 70888 460316 53393 0 3 0x82 nanoslp syz-executor.2 87101 403060 1 0 3 0x100083 ttyin getty 45307 13816 53393 0 3 0x82 nanoslp syz-executor.7 25472 65293 0 0 3 0x14200 acct acct 77011 296830 0 0 3 0x14280 nfsidl nfsio 41062 93935 0 0 3 0x14280 nfsidl nfsio 11715 225386 0 0 3 0x14280 nfsidl nfsio 61296 96749 0 0 3 0x14280 nfsidl nfsio 83705 408256 0 0 3 0x14280 nfsidl nfsio 1690 175523 0 0 3 0x14280 nfsidl nfsio 61576 115623 0 0 3 0x14280 nfsidl nfsio 22632 268797 0 0 3 0x14280 nfsidl nfsio 51887 228576 0 0 3 0x14280 nfsidl nfsio 56041 425258 0 0 3 0x14280 nfsidl nfsio 50019 466850 0 0 3 0x14280 nfsidl nfsio 49769 299880 0 0 3 0x14280 nfsidl nfsio 90151 369658 0 0 3 0x14280 nfsidl nfsio 21124 473735 0 0 3 0x14280 nfsidl nfsio 41231 269775 0 0 3 0x14280 nfsidl nfsio 16794 502705 0 0 3 0x14280 nfsidl nfsio 75096 188381 0 0 3 0x14280 nfsidl nfsio 20838 269672 0 0 3 0x14280 nfsidl nfsio 47019 267256 0 0 3 0x14280 nfsidl nfsio 29530 391427 0 0 3 0x14280 nfsidl nfsio 42698 286442 0 0 3 0x14200 bored sosplice 53393 18590 59579 0 3 0x82 wait syz-fuzzer 53393 472127 59579 0 3 0x4000082 thrsleep syz-fuzzer 53393 107113 59579 0 3 0x4000082 wait syz-fuzzer 53393 405626 59579 0 3 0x4000082 thrsleep syz-fuzzer 53393 370976 59579 0 3 0x4000082 thrsleep syz-fuzzer 53393 314989 59579 0 3 0x4000082 thrsleep syz-fuzzer 53393 371876 59579 0 3 0x4000082 thrsleep syz-fuzzer 53393 149511 59579 0 3 0x4000082 wait syz-fuzzer 53393 212877 59579 0 3 0x4000082 thrsleep syz-fuzzer 53393 358979 59579 0 3 0x4000082 kqread syz-fuzzer 53393 234174 59579 0 3 0x4000082 wait syz-fuzzer 53393 495995 59579 0 3 0x4000082 wait syz-fuzzer 53393 488299 59579 0 3 0x4000082 thrsleep syz-fuzzer 53393 25370 59579 0 3 0x4000082 wait syz-fuzzer 53393 221905 59579 0 3 0x4000082 wait syz-fuzzer 53393 319447 59579 0 3 0x4000082 wait syz-fuzzer 59579 289973 42076 0 3 0x10008a sigsusp ksh 42076 518828 66333 0 3 0x9a kqread sshd 66333 327002 1 0 3 0x88 kqread sshd 32983 341992 20503 74 3 0x1100092 bpf pflogd 20503 28635 1 0 3 0x80 netio pflogd 37346 439889 9381 73 3 0x1100090 kqread syslogd 9381 164375 1 0 3 0x100082 netio syslogd 60631 191530 1 0 3 0x100080 kqread resolvd 94757 437758 55391 77 3 0x100092 kqread dhcpleased 46157 483617 55391 77 3 0x100092 kqread dhcpleased 55391 246933 1 0 3 0x80 kqread dhcpleased 83447 418649 0 0 3 0x14200 bored smr 85200 134749 0 0 2 0x14200 zerothread 47974 59593 0 0 3 0x14200 aiodoned aiodoned 24025 480752 0 0 3 0x14200 syncer update 62218 317706 0 0 3 0x14200 cleaner cleaner 24380 464845 0 0 3 0x14200 reaper reaper 76655 474180 0 0 3 0x14200 pgdaemon pagedaemon 86305 263812 0 0 3 0x14200 bored viomb 49435 26267 0 0 3 0x40014200 acpi0 acpi0 62546 433965 0 0 7 0x40014200 idle1 98863 272159 0 0 3 0x14200 bored softnet 62993 364114 0 0 3 0x14200 bored softnet 37827 59999 0 0 3 0x14200 bored softnet 69972 345136 0 0 3 0x14200 bored softnet 51285 416901 0 0 3 0x14200 bored systqmp 71258 499509 0 0 3 0x14200 bored systq 30689 435326 0 0 3 0x40014200 bored softclock 72743 26319 0 0 3 0x40014200 idle0 1 420607 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 10230 6531K 7547K 78643K 69387 0 pcb 13 28K 36K 78643K 4963 0 rtable 267 23K 23K 78643K 6373 0 ifaddr 132 31K 34K 78643K 2260 0 sysctl 3 1K 2K 78643K 23 0 counters 64 36K 37K 78643K 1198 0 ioctlops 1 1K 4K 78643K 8709 0 iov 0 0K 32K 78643K 3554 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1558 97K 98K 78643K 20279 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 406 0 VM map 2 1K 1K 78643K 2 0 sem 14 20K 21K 78643K 1596 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 11 37K 89K 78643K 30843 0 sigio 0 0K 0K 78643K 396 0 proc 74 91K 128K 78643K 6037 0 subproc 104 6K 6K 78643K 1978 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1736 0 in_multi 98 6K 7K 78643K 2401 0 ether_multi 1 0K 0K 78643K 179 0 mrt 1 0K 0K 78643K 93 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 79 360K 360K 78643K 79 0 exec 0 0K 2K 78643K 8141 0 pfkey data 0 0K 0K 78643K 18 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 716 1982K 1999K 78643K 168567 0 UVM aobj 134 8K 8K 78643K 140 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1158 0 NDP 21 0K 2K 78643K 705 0 temp 165 4727K 70262K 78643K 297529 0 kqueue 12 18K 30K 78643K 2633 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 1977 0 1974 19 18 1 3 0 8 0 rtentry 112 2065 0 1964 5 2 3 4 0 8 0 unpcb 144 22610 0 22595 258 252 6 10 0 8 5 syncache 296 154 0 154 38 37 1 1 0 8 1 tcpqe 32 77 0 77 18 17 1 1 0 8 1 tcpcb 768 15443 0 15366 483 473 10 22 0 8 2 arp 120 321 0 305 1 0 1 1 0 8 0 inpcb 368 34253 0 34242 498 488 10 19 0 8 8 nd6 48 506 0 481 1 0 1 1 0 8 0 pkpcb 40 210 0 210 28 28 0 1 0 8 0 kcovpl 48 151 0 143 1 0 1 1 0 8 0 mppekey 1024 1 0 0 1 0 1 1 0 8 0 ppxss 1256 375 0 373 33 32 1 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 151 0 150 8 7 1 1 0 482 0 pffrnode 88 151 0 150 8 7 1 1 0 8 0 pffrent 40 491 0 490 8 7 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 pfrke_plain 168 4 0 4 1 1 0 1 0 8 0 pfrktable 1344 32 0 25 2 1 1 2 0 8 0 pfanchor 1280 304 0 64 21 1 20 20 0 8 0 pftag 88 5 0 2 1 0 1 1 0 8 0 pfstitem 24 20 0 18 1 0 1 1 0 8 0 pfstkey 120 22 0 20 1 0 1 1 0 8 0 pfstate 336 20 0 18 2 1 1 2 0 8 0 pfrule 1360 119 0 98 5 3 2 2 0 8 0 rttmr 136 20 0 20 6 6 0 1 0 8 0 art_heap8 4096 4 0 3 3 2 1 3 0 8 0 art_heap4 256 10068 0 9582 88 57 31 31 0 8 0 art_table 32 10072 0 9585 5 1 4 4 0 8 0 art_node 16 2057 0 1969 1 0 1 1 0 8 0 sysvmsgpl 40 46 0 6 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 1459 0 1447 1 0 1 1 0 8 0 shmpl 112 137 0 9 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 41037 0 39485 98 0 98 98 0 8 0 ffsino 272 41037 0 39485 104 0 104 104 0 8 0 nchpl 144 82449 0 80796 63 0 63 63 0 8 0 rtmask 32 7 0 7 2 2 0 1 0 8 0 uvmvnodes 80 8641 0 0 177 0 177 177 0 8 0 vnodes 216 8641 0 0 481 0 481 481 0 8 0 namei 1024 337453 0 337453 12 11 1 2 0 8 1 percpumem 16 611 0 567 1 0 1 1 0 8 0 vcpupl 2048 377 0 2 47 0 47 47 0 8 0 vmpool 568 434 0 59 27 0 27 27 0 8 0 pfiaddrpl 120 20 0 8 1 0 1 1 0 8 0 kstatmem 264 760 0 718 5 2 3 4 0 8 0 scsiplug 72 57 0 57 17 17 0 1 0 8 0 scxspl 216 248443 0 248443 29 28 1 8 0 8 1 plimitpl 152 4969 0 4954 1 0 1 1 0 8 0 sigapl 424 30884 0 30816 10 2 8 8 0 8 0 futexpl 64 309410 0 309410 8 7 1 1 0 8 1 knotepl 120 1653 0 0 19 2 17 19 0 8 0 kqueuepl 216 6644 0 6636 111 106 5 6 0 8 4 pipepl 320 6380 0 6352 168 165 3 11 0 8 0 fdescpl 496 30843 0 30819 9 5 4 5 0 8 0 filepl 152 241888 0 241648 371 353 18 29 0 8 7 lockfpl 104 15524 0 15522 34 33 1 4 0 8 0 lockfspl 48 6078 0 6076 2 1 1 2 0 8 0 sessionpl 144 170 0 153 1 0 1 1 0 8 0 pgrppl 48 452 0 435 1 0 1 1 0 8 0 ucredpl 104 37017 0 36997 1 0 1 1 0 8 0 zombiepl 144 30821 0 30816 3 2 1 1 0 8 0 processpl 1064 30884 0 30816 5 0 5 5 0 8 0 procpl 672 77032 0 76948 30 21 9 10 0 8 0 srpgc 96 253 0 253 39 39 0 1 0 8 0 sosppl 168 356 0 355 42 41 1 1 0 8 0 sockpl 488 59079 0 59050 1201 1180 21 45 0 8 16 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 14 0 0 2 0 2 2 0 8 0 mcl4k 4096 31 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 655 0 0 49 19 30 49 0 8 0 mtagpl 96 1685 0 0 22 0 22 22 0 8 0 mbufpl 256 8095 0 0 426 1 425 425 0 8 0 bufpl 288 54676 0 46035 618 0 618 618 0 8 0 anonpl 24 5866233 0 5846073 523 371 152 153 0 186 14 amapchunkpl 152 532095 0 531285 469 423 46 348 0 158 8 amappl16 200 88105 0 87360 277 226 51 53 0 8 8 amappl15 192 5910 0 5902 1 0 1 1 0 8 0 amappl14 184 4636 0 4626 1 0 1 1 0 8 0 amappl13 176 4450 0 4445 1 0 1 1 0 8 0 amappl12 168 2255 0 2241 1 0 1 1 0 8 0 amappl11 160 5341 0 5322 2 0 2 2 0 8 0 amappl10 152 2474 0 2460 1 0 1 1 0 8 0 amappl9 144 7269 0 7263 1 0 1 1 0 8 0 amappl8 136 5832 0 5628 10 2 8 8 0 8 0 amappl7 128 2845 0 2821 1 0 1 1 0 8 0 amappl6 120 8005 0 7976 2 1 1 2 0 8 0 amappl5 112 23178 0 23160 1 0 1 1 0 8 0 amappl4 104 15887 0 15846 4 2 2 2 0 8 0 amappl3 96 90682 0 90634 2 0 2 2 0 8 0 amappl2 88 6984 0 6934 2 0 2 2 0 8 0 amappl1 80 748511 0 747936 23 7 16 20 0 8 0 amappl 88 164861 0 164562 11 3 8 8 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 72 139 0 6 3 0 3 3 0 8 0 uaddrrnd 24 31277 0 30878 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 31277 0 30878 3 0 3 3 0 8 0 vmmpekpl 168 205792 0 205688 5 0 5 5 0 8 0 vmmpepl 168 3031564 0 3028155 720 526 194 244 0 357 15 vmsppl 368 31276 0 30878 40 3 37 37 0 8 0 rwobjpl 56 714316 0 703506 200 42 158 158 0 8 1 pdppl 4096 62561 0 62131 1893 1449 444 445 0 8 14 pvpl 32 11748020 0 11727423 860 645 215 263 0 265 11 pmappl 248 31276 0 30878 27 1 26 26 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 3930 0 2068 54 0 54 54 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace rc4_keysetup(ffff80002e5ef2f2,ffff80002e5ef404,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff80002e5ef2b8,ffffe4ec,4d5a,ffff800000c7666c,ffffe4ec) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff80002e63b228,ffff800000c76400) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002e63b228,ffff800000c76400) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000c76400,1,ffff8000212f0a90) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086334,82907003,ffff800000c76400,1,ffff8000212f0a90) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd8065747568,82907003,ffff800000c76400,1,fffffd807f7d76e8,ffff8000212f0a90) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8065ba7270,82907003,ffff800000c76400,ffff8000212f0a90) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000212f0a90,ffff80002e63b578,ffff80002e63b5c0) at sys_ioctl+0x4a2 syscall(ffff80002e63b640) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002e63b640) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5be046c4e10, 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