kernel: integer divide fault trap, code=0 Stopped at pf_purge+0x1e: divl __kernel_phys_base+0x50f7dc,%eax ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace pf_purge(ffffffff829ef470) at pf_purge+0x1e sys/net/pf.c:1302 taskq_thread(ffffffff829612f0) at taskq_thread+0x9b sys/kern/kern_task.c:449 end trace frame: 0x0, count: -2 ddb> show registers rdi 0xffffffff829ef470 pf_npurge rsi 0 rbp 0xffff80002159aa60 rbx 0 rdx 0 rcx 0xffffffff829ef470 pf_npurge rax 0x4 r8 0 r9 0 r10 0x133b1945e6a94d4 r11 0x5710e862e81c5539 r12 0xffff80002159aa70 r13 0xffff80002169e7f8 r14 0xffffffff829ef470 pf_npurge r15 0xffff80002159aaa0 rip 0xffffffff814e191e pf_purge+0x1e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002159aa30 ss 0 pf_purge+0x1e: divl __kernel_phys_base+0x50f7dc,%eax ddb> show proc PROC (systq) pid=151909 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffe2a0,0xffff8000ffffe550 process=0xffff8000ffffcbb8 user=0xffff800021595000, vmspace=0xffffffff82a8bd58 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 12967 458829 56008 0 2 0 syz-executor.1 12967 446279 56008 0 2 0x4000000 syz-executor.1 98490 305952 27871 0 2 0 syz-executor.2 98490 368160 27871 0 3 0x4000080 fsleep syz-executor.2 98490 5700 27871 0 3 0x4000080 fsleep syz-executor.2 38473 228429 17254 0 2 0 syz-executor.7 38473 311314 17254 0 3 0x4000080 fsleep syz-executor.7 41413 252353 61388 0 2 0 syz-executor.3 41413 313713 61388 0 3 0x4000080 ttyout syz-executor.3 41413 523555 61388 0 3 0x4000080 ttyout syz-executor.3 41413 429390 61388 0 2 0x4000000 syz-executor.3 18808 133712 31165 0 2 0 syz-executor.0 18808 449583 31165 0 3 0x4000080 fsleep syz-executor.0 18808 411382 31165 0 3 0x4000080 fsleep syz-executor.0 46398 97121 3900 0 2 0 syz-executor.4 46398 109585 3900 0 3 0x4000080 fsleep syz-executor.4 34170 177775 0 0 3 0x14200 acct acct 3900 233277 51382 0 2 0x482 syz-executor.4 27871 280510 51382 0 3 0x82 nanoslp syz-executor.2 33578 448344 51382 0 2 0x482 syz-executor.5 17254 509211 51382 0 2 0x482 syz-executor.7 56008 139945 51382 0 3 0x82 nanoslp syz-executor.1 31165 287126 51382 0 2 0x482 syz-executor.0 52357 270147 51382 0 3 0x82 nanoslp syz-executor.6 61388 244543 51382 0 3 0x82 nanoslp syz-executor.3 12704 338424 0 0 3 0x14200 bored sosplice 51382 503829 18355 0 3 0x82 thrsleep syz-fuzzer 51382 241609 18355 0 2 0x4000482 syz-fuzzer 51382 335886 18355 0 3 0x4000082 kqread syz-fuzzer 51382 204261 18355 0 3 0x4000082 thrsleep syz-fuzzer 51382 428643 18355 0 3 0x4000082 thrsleep syz-fuzzer 51382 238313 18355 0 3 0x4000082 thrsleep syz-fuzzer 51382 335443 18355 0 3 0x4000082 thrsleep syz-fuzzer 51382 12276 18355 0 3 0x4000082 thrsleep syz-fuzzer 51382 21314 18355 0 3 0x4000082 thrsleep syz-fuzzer 18355 68195 13802 0 3 0x10008a sigsusp ksh 13802 324995 7394 0 3 0x9a kqread sshd 37545 134787 1 0 3 0x100083 ttyin getty 7394 224437 1 0 3 0x88 kqread sshd 46791 241431 49883 73 3 0x100090 kqread syslogd 49883 120040 1 0 3 0x100082 netio syslogd 90286 500061 1 0 3 0x100080 kqread resolvd 94287 237735 50366 77 3 0x100092 kqread dhcpleased 18276 333085 50366 77 3 0x100092 kqread dhcpleased 50366 307239 1 0 3 0x80 kqread dhcpleased 42951 435172 0 0 3 0x14200 bored smr 12236 472102 0 0 2 0x14200 zerothread 7809 437300 0 0 3 0x14200 aiodoned aiodoned 82466 118564 0 0 3 0x14200 syncer update 1970 27758 0 0 3 0x14200 cleaner cleaner 77913 148468 0 0 3 0x14200 reaper reaper 9716 419408 0 0 3 0x14200 pgdaemon pagedaemon 63980 418522 0 0 3 0x14200 bored viomb 97839 12809 0 0 3 0x40014200 acpi0 acpi0 81894 467145 0 0 3 0x14200 bored softnet 36903 76014 0 0 3 0x14200 bored systqmp *28148 151909 0 0 7 0x14200 systq 27465 249869 0 0 3 0x40014200 bored softclock 76217 347266 0 0 3 0x40014200 idle0 1 122699 0 0 3 0x80082 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 10191 6533K 7073K 78643K 18599 0 pcb 13 16K 18K 78643K 931 0 rtable 177 9K 13K 78643K 2836 0 ifaddr 84 19K 22K 78643K 1009 0 sysctl 2 0K 0K 78643K 2 0 counters 26 17K 17K 78643K 101 0 ioctlops 0 0K 4K 78643K 1870 0 iov 0 0K 28K 78643K 545 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1489 93K 93K 78643K 4271 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 56 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 396 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 65K 78643K 6102 0 sigio 0 0K 0K 78643K 46 0 proc 62 55K 71K 78643K 1604 0 subproc 104 6K 8K 78643K 595 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 485 0 in_multi 72 4K 6K 78643K 692 0 ether_multi 1 0K 0K 78643K 69 0 mrt 1 0K 0K 78643K 32 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 2014 0 pfkey data 0 0K 0K 78643K 5 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 7 26K 26K 78643K 7 0 UVM amap 415 475K 821K 78643K 73524 0 UVM aobj 115 8K 8K 78643K 121 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 248 0 NDP 11 0K 2K 78643K 181 0 temp 127 4699K 6235K 78643K 116357 0 kqueue 12 18K 24K 78643K 362 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 120 206 0 203 1 0 1 1 0 8 0 rtentry 112 594 0 525 5 2 3 4 0 8 0 unpcb 136 4683 0 4670 40 38 2 10 0 8 1 syncache 296 10 0 10 3 3 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 63 0 63 1 1 0 1 0 8 0 tcpcb 736 2044 0 2040 75 52 23 23 0 8 22 arp 88 101 0 89 1 0 1 1 0 8 0 ipq 40 53 0 51 5 4 1 1 0 8 0 ipqe 40 336 0 333 5 4 1 1 0 8 0 inpcb 304 6083 0 6076 88 79 9 14 0 8 8 rttmr 72 10 0 10 3 3 0 1 0 8 0 ip6q 72 2 0 1 1 0 1 1 0 8 0 ip6af 40 3 0 2 1 0 1 1 0 8 0 nd6 48 145 0 128 1 0 1 1 0 8 0 pkpcb 40 53 0 53 4 4 0 1 0 8 0 kcovpl 48 43 0 35 1 0 1 1 0 8 0 ppxss 1152 12 0 12 3 3 0 1 0 8 0 pfstscr 40 41 0 37 1 0 1 1 0 8 0 pfrktable 1344 516 0 508 7 6 1 2 0 8 0 pftag 88 13 0 10 1 0 1 1 0 8 0 pfstitem 24 54 0 46 1 0 1 1 0 8 0 pfstkey 112 78 0 70 1 0 1 1 0 8 0 pfstate 320 39 0 35 1 0 1 1 0 8 0 pfrule 1360 501 0 420 8 1 7 7 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2689 0 2389 42 21 21 31 0 8 0 art_table 32 2690 0 2389 4 0 4 4 0 8 0 art_node 16 593 0 533 1 0 1 1 0 8 0 sysvmsgpl 40 37 0 7 1 0 1 1 0 8 0 semapl 112 394 0 384 1 0 1 1 0 8 0 shmpl 112 118 0 6 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 9200 0 7739 92 0 92 92 0 8 0 ffsino 240 9200 0 7739 87 0 87 87 0 8 0 nchpl 144 18886 0 17265 62 0 62 62 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 68098 0 68098 4 3 1 2 0 8 1 vcpupl 1984 30 0 0 4 0 4 4 0 8 0 vmpool 528 44 0 14 4 2 2 2 0 8 0 pfiaddrpl 120 171 0 152 6 5 1 1 0 8 0 scxspl 216 49769 0 49769 18 17 1 8 0 8 1 plimitpl 152 551 0 536 1 0 1 1 0 8 0 sigapl 424 6303 0 6261 5 0 5 5 0 8 0 futexpl 64 53357 0 53351 1 0 1 1 0 8 0 knotepl 120 55368 0 55288 4 1 3 4 0 8 0 kqueuepl 184 1493 0 1485 24 22 2 4 0 8 1 pipepl 304 1196 0 1168 33 28 5 8 0 8 2 fdescpl 432 6287 0 6260 4 0 4 4 0 8 0 filepl 120 46768 0 46527 67 55 12 17 0 8 4 lockfpl 104 2034 0 2032 6 5 1 2 0 8 0 lockfspl 48 422 0 420 1 0 1 1 0 8 0 sessionpl 144 58 0 42 1 0 1 1 0 8 0 pgrppl 48 61 0 45 1 0 1 1 0 8 0 ucredpl 96 5106 0 5092 1 0 1 1 0 8 0 zombiepl 144 6261 0 6259 2 1 1 1 0 8 0 processpl 1000 6303 0 6259 6 0 6 6 0 8 0 procpl 672 15029 0 14967 12 6 6 7 0 8 0 sosppl 168 67 0 67 7 7 0 1 0 8 0 sockpl 448 11094 0 11071 229 218 11 31 0 8 8 mcl64k 65536 183 0 183 4 3 1 1 0 8 1 mcl16k 16384 55 0 55 9 9 0 1 0 8 0 mcl12k 12288 128 0 128 8 7 1 1 0 8 1 mcl9k 9216 71 0 71 12 11 1 1 0 8 1 mcl8k 8192 355 0 355 5 4 1 1 0 8 1 mcl4k 4096 702 0 702 5 4 1 1 0 8 1 mcl2k2 2112 33 0 33 12 12 0 1 0 8 0 mcl2k 2048 86302 0 86244 34 25 9 19 0 8 1 mtagpl 96 1068 0 938 17 11 6 8 0 8 0 mbufpl 256 179242 0 178880 74 41 33 49 0 8 1 bufpl 288 15005 0 8597 458 0 458 458 0 8 0 anonpl 24 1737173 0 1716131 236 86 150 168 0 188 18 amapchunkpl 152 271742 0 270951 1242 1208 34 660 0 158 2 amappl16 200 20738 0 19957 99 45 54 63 0 8 8 amappl15 192 770 0 764 1 0 1 1 0 8 0 amappl14 184 682 0 680 1 0 1 1 0 8 0 amappl13 176 1726 0 1724 1 0 1 1 0 8 0 amappl12 168 558 0 554 1 0 1 1 0 8 0 amappl11 160 884 0 869 1 0 1 1 0 8 0 amappl10 152 820 0 815 1 0 1 1 0 8 0 amappl9 144 1025 0 1021 1 0 1 1 0 8 0 amappl8 136 1535 0 1444 4 0 4 4 0 8 0 amappl7 128 542 0 528 1 0 1 1 0 8 0 amappl6 120 846 0 818 2 1 1 2 0 8 0 amappl5 112 5844 0 5829 1 0 1 1 0 8 0 amappl4 104 2585 0 2549 2 1 1 2 0 8 0 amappl3 96 1870 0 1856 1 0 1 1 0 8 0 amappl2 88 2634 0 2575 3 1 2 3 0 8 0 amappl1 80 112161 0 111602 24 11 13 18 0 8 0 amappl 88 72382 0 72109 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 72 120 0 6 3 0 3 3 0 8 0 uaddrrnd 24 6331 0 6274 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6331 0 6274 1 0 1 1 0 8 0 vmmpekpl 168 45600 0 45550 3 0 3 3 0 8 0 vmmpepl 168 585947 0 583187 226 89 137 148 0 357 9 vmsppl 272 6330 0 6274 5 1 4 4 0 8 0 rwobjpl 24 142637 0 134804 51 2 49 50 0 8 1 pdppl 4096 12668 0 12578 379 285 94 94 0 8 4 pvpl 32 2930960 0 2907174 350 119 231 253 0 265 33 pmappl 216 6330 0 6274 4 0 4 4 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1517 0 669 26 1 25 25 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pf_purge(ffffffff829ef470) at pf_purge+0x1e sys/net/pf.c:1302 taskq_thread(ffffffff829612f0) at taskq_thread+0x9b sys/kern/kern_task.c:449 end trace frame: 0x0, count: -2 ddb> machine ddbcpu 1 No such command ddb> trace pf_purge(ffffffff829ef470) at pf_purge+0x1e sys/net/pf.c:1302 taskq_thread(ffffffff829612f0) at taskq_thread+0x9b sys/kern/kern_task.c:449 end trace frame: 0x0, count: -2