login: 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(ffff80002e932a6a,ffff80002e932b7c,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff80002e932a50,458d,23d2,ffff800000c07e6c,458d) at pipex_mppe_init+0x207 sys/net/pipex.c:2319 pipex_init_session(ffff80002172b878,ffff800000c07c00) at pipex_init_session+0x5d6 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002172b878,ffff800000c07c00) at pipex_init_session+0x5d6 sys/net/pipex.c:385 pppacioctl(4086337,82907003,ffff800000c07c00,1,ffff8000223bc550) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086337,82907003,ffff800000c07c00,1,ffff8000223bc550) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd807dc9aa58,82907003,ffff800000c07c00,1,fffffd807f7d7a28,ffff8000223bc550) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd807db88900,82907003,ffff800000c07c00,ffff8000223bc550) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000223bc550,ffff80002172bbc8,ffff80002172bc20) at sys_ioctl+0x49e syscall(ffff80002172bc90) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xded4ae93110, count: -9 ddb> show registers rdi 0xffff80002cefc000 rsi 0 rbp 0xffff80002172b700 rbx 0 rdx 0 rcx 0 rax 0x1 r8 0x60 r9 0x2f2d33bf r10 0xfd7444036e62bfe r11 0x4ce59d4ff6abc0a9 r12 0xffff80002e932b7c r13 0 r14 0xffff80002e932a6a r15 0 rip 0xffffffff814045cf rc4_keysetup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002172b6a0 ss 0x10 rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb> show proc PROC (syz-executor.7) pid=243222 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000223bda50,0xffff8000223bcd40 process=0xffff800021724410 user=0xffff800021726000, vmspace=0xfffffd807c3c9ee0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 65973 320591 92669 0 2 0 syz-executor.0 65973 496825 92669 0 3 0x4000080 fsleep syz-executor.0 65973 14699 92669 0 3 0x4000080 fsleep syz-executor.0 65973 8625 92669 0 3 0x4000080 fsleep syz-executor.0 39023 128747 74380 0 2 0 syz-executor.6 39023 454606 74380 0 3 0x4000080 fsleep syz-executor.6 39023 256042 74380 0 3 0x4000080 fsleep syz-executor.6 8765 475728 17778 0 2 0 syz-executor.7 * 8765 243222 17778 0 7 0x4000000 syz-executor.7 31415 326200 1 0 3 0x100083 ttyin getty 80617 393930 66981 0 2 0x482 syz-executor.3 17778 453695 66981 0 2 0x482 syz-executor.7 74380 255291 66981 0 3 0x82 nanoslp syz-executor.6 31821 27590 66981 0 2 0x482 syz-executor.5 27492 279102 66981 0 2 0x482 syz-executor.4 92669 399415 66981 0 2 0x482 syz-executor.0 30913 269638 66981 0 2 0x482 syz-executor.2 7291 320178 66981 0 2 0x482 syz-executor.1 66981 508669 33443 0 3 0x82 thrsleep syz-fuzzer 66981 425098 33443 0 3 0x4000082 thrsleep syz-fuzzer 66981 505013 33443 0 3 0x4000082 wait syz-fuzzer 66981 403467 33443 0 3 0x4000082 wait syz-fuzzer 66981 85726 33443 0 3 0x4000082 wait syz-fuzzer 66981 357272 33443 0 3 0x4000082 thrsleep syz-fuzzer 66981 107098 33443 0 3 0x4000082 wait syz-fuzzer 66981 482854 33443 0 3 0x4000082 wait syz-fuzzer 66981 359684 33443 0 3 0x4000082 thrsleep syz-fuzzer 66981 483359 33443 0 3 0x4000082 thrsleep syz-fuzzer 66981 329712 33443 0 3 0x4000082 wait syz-fuzzer 66981 60799 33443 0 3 0x4000082 wait syz-fuzzer 66981 351927 33443 0 3 0x4000082 kqread syz-fuzzer 66981 522094 33443 0 3 0x4000082 wait syz-fuzzer 33443 267081 58878 0 3 0x10008a sigsusp ksh 58878 223656 26265 0 3 0x9a kqread sshd 26265 199306 1 0 3 0x88 kqread sshd 46450 503706 26164 73 3 0x1100090 kqread syslogd 26164 289476 1 0 3 0x100082 netio syslogd 15478 33104 1 0 3 0x100080 kqread resolvd 76806 434860 21371 77 3 0x100092 kqread dhcpleased 74523 447790 21371 77 3 0x100092 kqread dhcpleased 21371 280109 1 0 3 0x80 kqread dhcpleased 33156 509 0 0 3 0x14200 bored smr 8882 491581 0 0 2 0x14200 zerothread 66594 85011 0 0 3 0x14200 aiodoned aiodoned 27722 229991 0 0 3 0x14200 syncer update 14226 231233 0 0 3 0x14200 cleaner cleaner 75736 201825 0 0 3 0x14200 reaper reaper 1961 522685 0 0 3 0x14200 pgdaemon pagedaemon 14415 380373 0 0 3 0x14200 bored viomb 20102 148885 0 0 3 0x40014200 acpi0 acpi0 13048 406952 0 0 3 0x14200 bored softnet 87376 420095 0 0 3 0x14200 bored softnet 54385 345920 0 0 3 0x14200 bored softnet 86229 293529 0 0 3 0x14200 bored softnet 33204 124866 0 0 3 0x14200 bored systqmp 47314 109573 0 0 3 0x14200 bored systq 92446 453515 0 0 3 0x40014200 bored softclock 35674 255747 0 0 3 0x40014200 idle0 1 166648 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 6413K 6669K 78643K 11741 0 pcb 13 8K 8K 78643K 51 0 rtable 239 9K 9K 78643K 409 0 ifaddr 92 18K 18K 78643K 113 0 counters 29 17K 17K 78643K 30 0 ioctlops 1 1K 4K 78643K 75 0 iov 0 0K 12K 78643K 16 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1335 83K 83K 78643K 1589 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 12 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 38 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 13 45K 65K 78643K 448 0 proc 57 59K 75K 78643K 496 0 subproc 104 6K 6K 78643K 117 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 103 6K 6K 78643K 128 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 2K 78643K 694 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 239 130K 138K 78643K 3765 0 UVM aobj 13 2K 2K 78643K 14 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 13 0K 2K 78643K 32 0 temp 107 4708K 4772K 78643K 4384 0 kqueue 12 18K 22K 78643K 55 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 42 0 39 1 0 1 1 0 8 0 rtentry 112 130 0 19 4 0 4 4 0 8 0 unpcb 144 254 0 241 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 75 0 75 1 1 0 1 0 8 0 tcpcb 768 116 0 107 9 7 2 8 0 8 1 arp 88 20 0 2 1 0 1 1 0 8 0 inpcb 336 314 0 307 13 6 7 7 0 8 6 nd6 48 28 0 4 1 0 1 1 0 8 0 pkpcb 40 73 0 73 1 0 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 0 1 0 1 1 0 8 0 ppxss 1160 2 0 0 1 0 1 1 0 8 0 pfrule 1360 10 0 10 2 1 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 562 0 110 31 2 29 29 0 8 0 art_table 32 563 0 110 4 0 4 4 0 8 0 art_node 16 129 0 29 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 31 0 21 1 0 1 1 0 8 0 shmpl 112 11 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1972 0 541 90 0 90 90 0 8 0 ffsino 240 1972 0 541 85 0 85 85 0 8 0 nchpl 144 2656 0 1013 63 0 63 63 0 8 0 uvmvnodes 80 2252 0 0 46 0 46 46 0 8 0 vnodes 216 2252 0 0 126 0 126 126 0 8 0 namei 1024 9261 0 9261 2 1 1 2 0 8 1 vcpupl 2048 3 0 0 1 0 1 1 0 8 0 vmpool 536 3 0 0 1 0 1 1 0 8 0 kstatmem 264 28 0 2 2 0 2 2 0 8 0 scsiplug 72 5 0 5 1 1 0 1 0 8 0 scxspl 216 7649 0 7649 9 8 1 8 0 8 1 plimitpl 152 134 0 120 1 0 1 1 0 8 0 sigapl 424 733 0 688 6 0 6 6 0 8 0 futexpl 64 3741 0 3736 1 0 1 1 0 8 0 knotepl 120 11564 0 11484 9 2 7 7 0 8 4 kqueuepl 184 113 0 105 2 1 1 2 0 8 0 pipepl 288 205 0 177 5 2 3 5 0 8 0 fdescpl 432 717 0 693 4 0 4 4 0 8 0 filepl 120 4331 0 4093 18 4 14 16 0 8 6 lockfpl 104 495 0 493 3 1 2 3 0 8 1 lockfspl 48 110 0 108 1 0 1 1 0 8 0 sessionpl 144 25 0 9 1 0 1 1 0 8 0 pgrppl 48 25 0 9 1 0 1 1 0 8 0 ucredpl 104 597 0 587 1 0 1 1 0 8 0 zombiepl 144 693 0 688 1 0 1 1 0 8 0 processpl 1000 733 0 688 7 1 6 6 0 8 0 procpl 672 1336 0 1272 9 2 7 8 0 8 1 sockpl 456 683 0 660 21 10 11 12 0 8 8 mcl64k 65536 12 0 12 2 1 1 1 0 8 1 mcl16k 16384 3 0 3 2 1 1 1 0 8 1 mcl12k 12288 16 0 16 2 1 1 1 0 8 1 mcl9k 9216 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 28 0 28 2 1 1 1 0 8 1 mcl4k 4096 44 0 44 3 2 1 1 0 8 1 mcl2k2 2112 4 0 4 2 1 1 1 0 8 1 mcl2k 2048 69796 0 69723 18 7 11 17 0 8 0 mtagpl 96 150 0 4 5 1 4 4 0 8 0 mbufpl 256 112507 0 112124 29 2 27 27 0 8 0 bufpl 288 4050 0 128 281 0 281 281 0 8 0 anonpl 24 139380 0 122997 133 10 123 123 0 188 16 amapchunkpl 152 9983 0 9346 35 7 28 32 0 158 0 amappl16 200 1926 0 1358 44 5 39 43 0 8 8 amappl15 192 93 0 87 1 0 1 1 0 8 0 amappl14 184 7 0 3 1 0 1 1 0 8 0 amappl13 176 126 0 125 1 0 1 1 0 8 0 amappl12 168 47 0 43 1 0 1 1 0 8 0 amappl11 160 168 0 149 1 0 1 1 0 8 0 amappl10 152 106 0 99 1 0 1 1 0 8 0 amappl9 144 520 0 517 1 0 1 1 0 8 0 amappl8 136 613 0 555 3 0 3 3 0 8 0 amappl7 128 158 0 140 1 0 1 1 0 8 0 amappl6 120 227 0 215 2 1 1 2 0 8 0 amappl5 112 447 0 433 1 0 1 1 0 8 0 amappl4 104 920 0 894 2 0 2 2 0 8 0 amappl3 96 1513 0 1466 2 0 2 2 0 8 0 amappl2 88 524 0 491 2 0 2 2 0 8 0 amappl1 80 19050 0 18455 20 5 15 19 0 8 0 amappl 88 3293 0 3143 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 13 0 1 1 0 1 1 0 8 0 uaddrrnd 24 720 0 693 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 720 0 693 1 0 1 1 0 8 0 vmmpekpl 168 10143 0 10089 3 0 3 3 0 8 0 vmmpepl 168 73767 0 71495 141 20 121 132 0 357 5 vmsppl 272 719 0 693 4 1 3 3 0 8 0 rwobjpl 24 21218 0 17442 24 0 24 24 0 8 0 pdppl 4096 1446 0 1389 121 54 67 67 0 8 10 pvpl 32 370975 0 350643 239 34 205 239 0 265 30 pmappl 216 719 0 693 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 699 0 83 18 0 18 18 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace rc4_keysetup(ffff80002e932a6a,ffff80002e932b7c,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff80002e932a50,458d,23d2,ffff800000c07e6c,458d) at pipex_mppe_init+0x207 sys/net/pipex.c:2319 pipex_init_session(ffff80002172b878,ffff800000c07c00) at pipex_init_session+0x5d6 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002172b878,ffff800000c07c00) at pipex_init_session+0x5d6 sys/net/pipex.c:385 pppacioctl(4086337,82907003,ffff800000c07c00,1,ffff8000223bc550) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086337,82907003,ffff800000c07c00,1,ffff8000223bc550) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd807dc9aa58,82907003,ffff800000c07c00,1,fffffd807f7d7a28,ffff8000223bc550) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd807db88900,82907003,ffff800000c07c00,ffff8000223bc550) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000223bc550,ffff80002172bbc8,ffff80002172bc20) at sys_ioctl+0x49e syscall(ffff80002172bc90) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xded4ae93110, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace rc4_keysetup(ffff80002e932a6a,ffff80002e932b7c,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff80002e932a50,458d,23d2,ffff800000c07e6c,458d) at pipex_mppe_init+0x207 sys/net/pipex.c:2319 pipex_init_session(ffff80002172b878,ffff800000c07c00) at pipex_init_session+0x5d6 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002172b878,ffff800000c07c00) at pipex_init_session+0x5d6 sys/net/pipex.c:385 pppacioctl(4086337,82907003,ffff800000c07c00,1,ffff8000223bc550) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4086337,82907003,ffff800000c07c00,1,ffff8000223bc550) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd807dc9aa58,82907003,ffff800000c07c00,1,fffffd807f7d7a28,ffff8000223bc550) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd807db88900,82907003,ffff800000c07c00,ffff8000223bc550) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000223bc550,ffff80002172bbc8,ffff80002172bc20) at sys_ioctl+0x49e syscall(ffff80002172bc90) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xded4ae93110, count: -9