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(ffff800021783dda,ffff800021783eec,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff800021783dc0,7c98,6c8c,ffff8000006cb680,0) at pipex_mppe_init+0x207 sys/net/pipex.c:2319 pipex_init_session(ffff80002dcb4e38,ffff8000006cb400) at pipex_init_session+0x62c pipex_session_init_mppe_send sys/net/pipex.c:2336 [inline] pipex_init_session(ffff80002dcb4e38,ffff8000006cb400) at pipex_init_session+0x62c sys/net/pipex.c:390 pppacioctl(4086337,82907003,ffff8000006cb400,1,ffff80002e8f27f0) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086337,82907003,ffff8000006cb400,1,ffff80002e8f27f0) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd8068f04028,82907003,ffff8000006cb400,1,fffffd807f7d75b0,ffff80002e8f27f0) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8066a85f00,82907003,ffff8000006cb400,ffff80002e8f27f0) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002e8f27f0,ffff80002dcb5188,ffff80002dcb51e0) at sys_ioctl+0x49e syscall(ffff80002dcb5250) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8ccee015f50, count: -9 ddb> show registers rdi 0xffff80002b4aa000 rsi 0 rbp 0xffff80002dcb4cc0 rbx 0 rdx 0 rcx 0 rax 0x1 r8 0x60 r9 0x2f2d33bf r10 0x796f5c7eda8b513 r11 0xf2f882e458ff39b5 r12 0xffff800021783eec r13 0 r14 0xffff800021783dda r15 0 rip 0xffffffff819dee5f rc4_keysetup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002dcb4c60 ss 0x10 rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb> show proc PROC (syz-executor.2) pid=68480 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=70, nice=20 forw=0xffffffffffffffff, list=0xffff80002e8f2d30,0xffffffff82a3ebc8 process=0xffff80002179fb88 user=0xffff80002dcb0000, vmspace=0xfffffd807db56010 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 97529 264510 28737 0 2 0 syz-executor.2 *97529 68480 28737 0 7 0x4000000 syz-executor.2 72392 295658 55689 0 2 0 syz-executor.4 72392 305495 55689 0 3 0x4000080 fsleep syz-executor.4 48604 439066 76223 0 2 0 syz-executor.3 39597 430679 22838 0 2 0 syz-executor.6 39597 51224 22838 0 2 0x4000000 syz-executor.6 62315 184090 18018 0 3 0x82 nanoslp syz-executor.5 17242 287111 0 0 3 0x14200 bored sosplice 56127 199809 18018 0 2 0x2 syz-executor.7 55689 301285 18018 0 3 0x82 nanoslp syz-executor.4 76223 177484 18018 0 3 0x82 nanoslp syz-executor.3 28737 50039 18018 0 3 0x82 nanoslp syz-executor.2 22838 233483 18018 0 3 0x82 nanoslp syz-executor.6 19733 334693 18018 0 2 0x2 syz-executor.0 23619 16006 18018 0 2 0x2 syz-executor.1 18018 314820 41768 0 3 0x82 thrsleep syz-fuzzer 18018 303279 41768 0 3 0x4000082 nanoslp syz-fuzzer 18018 293869 41768 0 3 0x4000082 wait syz-fuzzer 18018 188008 41768 0 3 0x4000082 wait syz-fuzzer 18018 179411 41768 0 3 0x4000082 thrsleep syz-fuzzer 18018 276842 41768 0 3 0x4000082 wait syz-fuzzer 18018 58305 41768 0 3 0x4000082 wait syz-fuzzer 18018 427549 41768 0 3 0x4000082 wait syz-fuzzer 18018 354360 41768 0 3 0x4000082 thrsleep syz-fuzzer 18018 152917 41768 0 3 0x4000082 kqread syz-fuzzer 18018 503015 41768 0 3 0x4000082 wait syz-fuzzer 18018 96524 41768 0 3 0x4000082 wait syz-fuzzer 18018 271153 41768 0 3 0x4000082 wait syz-fuzzer 18018 487560 41768 0 3 0x4000082 thrsleep syz-fuzzer 41768 138774 77340 0 3 0x10008a sigsusp ksh 77340 256168 40230 0 3 0x9a kqread sshd 67658 80660 1 0 3 0x100083 ttyin getty 40230 511834 1 0 3 0x88 kqread sshd 6176 516869 50746 73 3 0x1100090 kqread syslogd 50746 400206 1 0 3 0x100082 netio syslogd 23836 436049 1 0 3 0x100080 kqread resolvd 22254 244829 92854 77 3 0x100092 kqread dhcpleased 64062 112131 92854 77 3 0x100092 kqread dhcpleased 92854 368651 1 0 3 0x80 kqread dhcpleased 47312 15295 0 0 3 0x14200 bored smr 23221 12100 0 0 2 0x14200 zerothread 81930 288743 0 0 3 0x14200 aiodoned aiodoned 63695 477633 0 0 3 0x14200 syncer update 91647 290987 0 0 3 0x14200 cleaner cleaner 16948 465040 0 0 3 0x14200 reaper reaper 56502 345955 0 0 3 0x14200 pgdaemon pagedaemon 508 52577 0 0 3 0x14200 bored viomb 56779 436897 0 0 3 0x40014200 acpi0 acpi0 76703 281951 0 0 3 0x14200 bored softnet 42413 233381 0 0 3 0x14200 bored softnet 81778 44003 0 0 3 0x14200 bored softnet 19648 78815 0 0 3 0x14200 bored softnet 79158 103313 0 0 3 0x14200 bored systqmp 76599 477296 0 0 3 0x14200 bored systq 97094 110731 0 0 3 0x40014200 bored softclock 83470 466712 0 0 3 0x40014200 idle0 1 422671 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 10172 6984K 7631K 78643K 12132 0 pcb 13 12K 14K 78643K 150 0 rtable 241 8K 8K 78643K 450 0 ifaddr 90 18K 18K 78643K 140 0 sysctl 1 1K 1K 78643K 1 0 counters 29 17K 17K 78643K 38 0 ioctlops 1 1K 4K 78643K 215 0 iov 0 0K 12K 78643K 101 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1341 84K 84K 78643K 1541 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 47 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 73K 78643K 628 0 proc 58 59K 83K 78643K 572 0 subproc 104 6K 6K 78643K 117 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1390 0 in_multi 103 6K 6K 78643K 138 0 ether_multi 1 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 2K 78643K 693 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 233 164K 1023K 78643K 4761 0 UVM aobj 5 2K 2K 78643K 8 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 10 0 NDP 12 0K 1K 78643K 38 0 temp 103 4712K 5292K 78643K 12966 0 kqueue 12 18K 22K 78643K 65 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 61 0 58 1 0 1 1 0 8 0 rtentry 112 122 0 12 4 0 4 4 0 8 0 unpcb 144 547 0 534 8 5 3 6 0 8 2 syncache 296 13 0 13 3 3 0 1 0 8 0 tcpqe 32 43 0 43 2 2 0 1 0 8 0 tcpcb 768 1099 0 902 56 36 20 27 0 8 0 arp 88 20 0 2 1 0 1 1 0 8 0 inpcb 320 1476 0 1468 20 13 7 13 0 8 6 nd6 48 27 0 3 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1160 10 0 8 2 1 1 1 0 8 0 pfanchor 1280 7 0 0 1 0 1 1 0 8 0 pfrule 1360 11 0 11 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 497 0 44 29 0 29 29 0 8 0 art_table 32 498 0 44 4 0 4 4 0 8 0 art_node 16 121 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semapl 112 45 0 35 1 0 1 1 0 8 0 shmpl 112 5 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2167 0 733 90 0 90 90 0 8 0 ffsino 240 2167 0 733 85 0 85 85 0 8 0 nchpl 144 3104 0 1468 63 0 63 63 0 8 0 uvmvnodes 80 2443 0 0 50 0 50 50 0 8 0 vnodes 216 2443 0 0 136 0 136 136 0 8 0 namei 1024 11541 0 11541 2 1 1 2 0 8 1 vcpupl 2048 102 0 0 13 0 13 13 0 8 0 vmpool 536 102 0 0 7 0 7 7 0 8 0 kstatmem 264 40 0 16 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 9378 0 9378 9 8 1 8 0 8 1 plimitpl 152 149 0 134 1 0 1 1 0 8 0 sigapl 424 917 0 874 6 0 6 6 0 8 0 futexpl 64 5861 0 5860 1 0 1 1 0 8 0 knotepl 120 11690 0 11610 5 1 4 5 0 8 0 kqueuepl 184 94 0 86 1 0 1 1 0 8 0 pipepl 288 148 0 120 3 0 3 3 0 8 0 fdescpl 432 900 0 875 4 0 4 4 0 8 0 filepl 120 6037 0 5801 19 7 12 16 0 8 4 lockfpl 104 223 0 221 2 1 1 2 0 8 0 lockfspl 48 45 0 43 1 0 1 1 0 8 0 sessionpl 144 24 0 8 1 0 1 1 0 8 0 pgrppl 48 28 0 12 1 0 1 1 0 8 0 ucredpl 104 522 0 512 1 0 1 1 0 8 0 zombiepl 144 875 0 874 1 0 1 1 0 8 0 processpl 1000 917 0 874 7 1 6 6 0 8 0 procpl 672 1781 0 1722 9 2 7 8 0 8 0 sosppl 168 3 0 3 1 1 0 1 0 8 0 sockpl 456 2088 0 2064 50 38 12 36 0 8 9 mcl64k 65536 20 0 20 3 2 1 1 0 8 1 mcl16k 16384 17 0 17 2 2 0 1 0 8 0 mcl12k 12288 20 0 20 2 1 1 1 0 8 1 mcl9k 9216 5 0 5 2 1 1 1 0 8 1 mcl8k 8192 40 0 40 2 1 1 1 0 8 1 mcl4k 4096 58 0 58 3 2 1 1 0 8 1 mcl2k2 2112 5 0 5 1 1 0 1 0 8 0 mcl2k 2048 71100 0 71036 13 3 10 12 0 8 0 mtagpl 96 193 0 7 6 1 5 5 0 8 0 mbufpl 256 117820 0 117415 30 0 30 30 0 8 1 bufpl 288 4642 0 129 323 0 323 323 0 8 0 anonpl 24 168332 0 153535 117 3 114 114 0 188 11 amapchunkpl 152 297946 0 297348 4415 4239 176 4414 0 158 151 amappl16 200 2672 0 2100 45 2 43 43 0 8 12 amappl15 192 385 0 376 1 0 1 1 0 8 0 amappl14 184 126 0 121 1 0 1 1 0 8 0 amappl13 176 184 0 182 1 0 1 1 0 8 0 amappl12 168 9 0 4 1 0 1 1 0 8 0 amappl11 160 79 0 65 1 0 1 1 0 8 0 amappl10 152 19 0 16 1 0 1 1 0 8 0 amappl9 144 548 0 543 1 0 1 1 0 8 0 amappl8 136 564 0 512 2 0 2 2 0 8 0 amappl7 128 117 0 101 1 0 1 1 0 8 0 amappl6 120 255 0 242 2 1 1 2 0 8 0 amappl5 112 530 0 516 1 0 1 1 0 8 0 amappl4 104 876 0 850 2 1 1 2 0 8 0 amappl3 96 2032 0 1987 2 0 2 2 0 8 0 amappl2 88 577 0 539 2 0 2 2 0 8 0 amappl1 80 23596 0 23007 19 4 15 19 0 8 0 amappl 88 4284 0 4140 4 0 4 4 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 7 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1002 0 875 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1002 0 875 1 0 1 1 0 8 0 vmmpekpl 168 10678 0 10619 3 0 3 3 0 8 0 vmmpepl 168 91217 0 88824 134 4 130 130 0 357 15 vmsppl 272 1001 0 875 10 1 9 9 0 8 0 rwobjpl 24 25698 0 21767 25 0 25 25 0 8 0 pdppl 4096 2010 0 1852 216 50 166 166 0 8 8 pvpl 32 422963 0 404184 239 37 202 239 0 265 35 pmappl 216 1001 0 875 8 0 8 8 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 832 0 65 22 0 22 22 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace rc4_keysetup(ffff800021783dda,ffff800021783eec,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff800021783dc0,7c98,6c8c,ffff8000006cb680,0) at pipex_mppe_init+0x207 sys/net/pipex.c:2319 pipex_init_session(ffff80002dcb4e38,ffff8000006cb400) at pipex_init_session+0x62c pipex_session_init_mppe_send sys/net/pipex.c:2336 [inline] pipex_init_session(ffff80002dcb4e38,ffff8000006cb400) at pipex_init_session+0x62c sys/net/pipex.c:390 pppacioctl(4086337,82907003,ffff8000006cb400,1,ffff80002e8f27f0) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086337,82907003,ffff8000006cb400,1,ffff80002e8f27f0) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd8068f04028,82907003,ffff8000006cb400,1,fffffd807f7d75b0,ffff80002e8f27f0) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8066a85f00,82907003,ffff8000006cb400,ffff80002e8f27f0) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002e8f27f0,ffff80002dcb5188,ffff80002dcb51e0) at sys_ioctl+0x49e syscall(ffff80002dcb5250) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8ccee015f50, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace rc4_keysetup(ffff800021783dda,ffff800021783eec,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff800021783dc0,7c98,6c8c,ffff8000006cb680,0) at pipex_mppe_init+0x207 sys/net/pipex.c:2319 pipex_init_session(ffff80002dcb4e38,ffff8000006cb400) at pipex_init_session+0x62c pipex_session_init_mppe_send sys/net/pipex.c:2336 [inline] pipex_init_session(ffff80002dcb4e38,ffff8000006cb400) at pipex_init_session+0x62c sys/net/pipex.c:390 pppacioctl(4086337,82907003,ffff8000006cb400,1,ffff80002e8f27f0) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086337,82907003,ffff8000006cb400,1,ffff80002e8f27f0) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd8068f04028,82907003,ffff8000006cb400,1,fffffd807f7d75b0,ffff80002e8f27f0) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8066a85f00,82907003,ffff8000006cb400,ffff80002e8f27f0) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002e8f27f0,ffff80002dcb5188,ffff80002dcb51e0) at sys_ioctl+0x49e syscall(ffff80002dcb5250) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8ccee015f50, count: -9