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 0xffff800021599f80 rbx 0 rdx 0 rcx 0xffffffff829ef470 pf_npurge rax 0x3 r8 0 r9 0 r10 0xd03097292227ba41 r11 0x6d7502ee352686f4 r12 0xffff800021599f90 r13 0xffff800024af9ba8 r14 0xffffffff829ef470 pf_npurge r15 0xffff800021599fc0 rip 0xffffffff814e191e pf_purge+0x1e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021599f50 ss 0 pf_purge+0x1e: divl __kernel_phys_base+0x50f7dc,%eax ddb> show proc PROC (systq) pid=110134 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000fffff500,0xffff8000ffffefd0 process=0xffff8000ffffc3e8 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 67700 401273 72681 0 2 0 syz-executor.6 98324 159695 15131 0 2 0 syz-executor.0 98324 389680 15131 0 3 0x4000080 kqsel syz-executor.0 53266 370425 97535 0 2 0 syz-executor.3 53266 276324 97535 0 3 0x4000080 fsleep syz-executor.3 83254 332286 9009 0 2 0 syz-executor.1 83254 128084 9009 0 3 0x4000080 fsleep syz-executor.1 64205 218029 17503 0 2 0 syz-executor.4 64205 125276 17503 0 3 0x4000080 fsleep syz-executor.4 74032 428442 55950 0 2 0 syz-executor.7 74032 519364 55950 0 3 0x4000080 fsleep syz-executor.7 9009 145461 61978 0 2 0x482 syz-executor.1 72681 332389 61978 0 2 0x482 syz-executor.6 44359 215621 61978 0 2 0x482 syz-executor.5 47203 263853 61978 0 2 0x2 syz-executor.2 55950 366303 61978 0 2 0x482 syz-executor.7 17503 438280 61978 0 2 0x482 syz-executor.4 15131 467973 61978 0 2 0x482 syz-executor.0 36920 474313 0 0 3 0x14280 nfsidl nfsio 29888 292339 0 0 3 0x14280 nfsidl nfsio 59589 254087 0 0 3 0x14280 nfsidl nfsio 91016 112156 0 0 3 0x14280 nfsidl nfsio 79086 333973 0 0 3 0x14280 nfsidl nfsio 61440 235211 0 0 3 0x14280 nfsidl nfsio 13001 272141 0 0 3 0x14280 nfsidl nfsio 19311 245045 0 0 3 0x14280 nfsidl nfsio 89085 450102 0 0 3 0x14280 nfsidl nfsio 76436 21655 0 0 3 0x14280 nfsidl nfsio 88690 403752 0 0 3 0x14280 nfsidl nfsio 52870 167382 0 0 3 0x14280 nfsidl nfsio 48217 293311 0 0 3 0x14280 nfsidl nfsio 37953 139049 0 0 3 0x14280 nfsidl nfsio 36339 292218 0 0 3 0x14280 nfsidl nfsio 74631 98317 0 0 3 0x14280 nfsidl nfsio 92353 134592 0 0 3 0x14280 nfsidl nfsio 88479 100490 0 0 3 0x14280 nfsidl nfsio 51193 341159 0 0 3 0x14280 nfsidl nfsio 17473 444536 0 0 3 0x14280 nfsidl nfsio 11831 89836 0 0 3 0x14200 bored sosplice 93485 268665 0 0 3 0x14200 acct acct 97535 227922 61978 0 2 0x482 syz-executor.3 61978 334822 81333 0 3 0x82 thrsleep syz-fuzzer 61978 280844 81333 0 2 0x4000002 syz-fuzzer 61978 214586 81333 0 3 0x4000082 kqread syz-fuzzer 61978 448031 81333 0 3 0x4000082 thrsleep syz-fuzzer 61978 277051 81333 0 3 0x4000082 thrsleep syz-fuzzer 61978 410977 81333 0 3 0x4000082 thrsleep syz-fuzzer 61978 514086 81333 0 3 0x4000082 thrsleep syz-fuzzer 61978 380984 81333 0 3 0x4000082 thrsleep syz-fuzzer 81333 353785 19380 0 3 0x10008a sigsusp ksh 19380 102640 31763 0 3 0x9a kqread sshd 65714 272605 1 0 3 0x100083 ttyin getty 31763 87795 1 0 3 0x88 kqread sshd 89101 418396 63376 73 3 0x100090 kqread syslogd 63376 25303 1 0 3 0x100082 netio syslogd 93929 59459 1 0 3 0x100080 kqread resolvd 24875 80096 30848 77 3 0x100092 kqread dhcpleased 56192 211430 30848 77 3 0x100092 kqread dhcpleased 30848 237111 1 0 3 0x80 kqread dhcpleased 64801 225387 0 0 3 0x14200 bored smr 36087 65835 0 0 2 0x14200 zerothread 95264 304818 0 0 3 0x14200 aiodoned aiodoned 94396 486765 0 0 3 0x14200 syncer update 31260 33577 0 0 3 0x14200 cleaner cleaner 2487 129859 0 0 3 0x14200 reaper reaper 29278 72498 0 0 3 0x14200 pgdaemon pagedaemon 93288 134211 0 0 3 0x14200 bored viomb 83847 347528 0 0 3 0x40014200 acpi0 acpi0 73381 425761 0 0 3 0x14200 bored softnet 6931 18723 0 0 3 0x14200 bored systqmp *32882 110134 0 0 7 0x14200 systq 87285 436577 0 0 3 0x40014200 bored softclock 31599 384493 0 0 3 0x40014200 idle0 1 96462 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 10340 6732K 7127K 78643K 21134 0 pcb 13 18K 20K 78643K 1452 0 rtable 204 12K 13K 78643K 1647 0 ifaddr 93 19K 20K 78643K 405 0 sysctl 3 1K 1K 78643K 7 0 counters 27 17K 17K 78643K 61 0 ioctlops 0 0K 4K 78643K 1178 0 iov 0 0K 28K 78643K 492 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1469 92K 92K 78643K 4804 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 54 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 942 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 74K 78643K 5145 0 sigio 0 0K 0K 78643K 165 0 proc 59 55K 71K 78643K 1059 0 subproc 104 6K 6K 78643K 299 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 4023 0 in_multi 73 4K 6K 78643K 489 0 ether_multi 1 0K 0K 78643K 102 0 mrt 1 0K 0K 78643K 41 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 169 758K 758K 78643K 169 0 exec 0 0K 2K 78643K 1310 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 389 346K 347K 78643K 63790 0 UVM aobj 94 8K 8K 78643K 96 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 368 0 NDP 13 0K 2K 78643K 101 0 temp 138 4705K 6241K 78643K 49237 0 kqueue 13 20K 26K 78643K 313 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 120 486 0 483 6 5 1 3 0 8 0 rtentry 112 366 0 291 4 1 3 4 0 8 0 unpcb 136 3958 0 3943 46 43 3 8 0 8 2 syncache 296 7 0 7 2 2 0 1 0 8 0 tcpcb 736 7422 0 7415 163 159 4 23 0 8 3 arp 88 56 0 42 1 0 1 1 0 8 0 inpcb 304 11637 0 11626 96 92 4 16 0 8 3 rttmr 72 12 0 12 4 4 0 1 0 8 0 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 4 0 4 1 1 0 1 0 8 0 nd6 48 83 0 66 1 0 1 1 0 8 0 pkpcb 40 25 0 25 4 4 0 1 0 8 0 kcovpl 48 23 0 15 1 0 1 1 0 8 0 ppxss 1152 5 0 5 2 2 0 1 0 8 0 pfstscr 40 34 0 31 1 0 1 1 0 8 0 pfosfp 40 2 0 2 1 0 1 1 0 8 1 pfosfpen 112 2 0 2 1 0 1 1 0 8 1 pfrktable 1344 99 0 88 2 1 1 2 0 8 0 pftag 88 8 0 3 1 0 1 1 0 8 0 pfstitem 24 25 0 20 1 0 1 1 0 8 0 pfstkey 112 59 0 54 1 0 1 1 0 8 0 pfstate 320 33 0 30 1 0 1 1 0 8 0 pfrule 1360 175 0 132 4 0 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1502 0 1163 34 11 23 29 0 8 0 art_table 32 1503 0 1163 4 0 4 4 0 8 0 art_node 16 362 0 296 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 0 1 0 1 1 0 8 0 semapl 112 939 0 929 1 0 1 1 0 8 0 shmpl 112 93 0 2 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8358 0 6895 92 0 92 92 0 8 0 ffsino 240 8358 0 6895 87 0 87 87 0 8 0 nchpl 144 15210 0 13592 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 54625 0 54625 4 3 1 2 0 8 1 vcpupl 1984 88 0 0 11 0 11 11 0 8 0 vmpool 528 137 0 49 6 0 6 6 0 8 0 pfiaddrpl 120 40 0 26 2 1 1 1 0 8 0 scxspl 216 47343 0 47343 23 22 1 8 0 8 1 plimitpl 152 473 0 459 1 0 1 1 0 8 0 sigapl 424 5422 0 5360 11 3 8 8 0 8 0 futexpl 64 54366 0 54362 3 2 1 1 0 8 0 knotepl 120 49954 0 49869 7 2 5 5 0 8 2 kqueuepl 184 1493 0 1484 21 20 1 7 0 8 0 pipepl 304 1167 0 1139 27 22 5 8 0 8 2 fdescpl 432 5387 0 5360 4 0 4 4 0 8 0 filepl 120 44065 0 43820 66 53 13 16 0 8 4 lockfpl 104 1592 0 1590 5 4 1 2 0 8 0 lockfspl 48 420 0 418 1 0 1 1 0 8 0 sessionpl 144 38 0 22 1 0 1 1 0 8 0 pgrppl 48 51 0 35 1 0 1 1 0 8 0 ucredpl 96 5570 0 5560 1 0 1 1 0 8 0 zombiepl 144 5360 0 5359 1 0 1 1 0 8 0 processpl 1000 5422 0 5359 11 2 9 9 0 8 0 procpl 672 12962 0 12887 18 10 8 8 0 8 1 sosppl 168 51 0 51 8 7 1 1 0 8 1 sockpl 448 16242 0 16213 304 293 11 30 0 8 7 mcl64k 65536 179 0 179 12 11 1 1 0 8 1 mcl16k 16384 57 0 57 16 15 1 1 0 8 1 mcl12k 12288 158 0 158 13 12 1 1 0 8 1 mcl9k 9216 90 0 90 14 14 0 1 0 8 0 mcl8k 8192 361 0 361 12 11 1 1 0 8 1 mcl4k 4096 567 0 567 7 6 1 1 0 8 1 mcl2k2 2112 36 0 36 12 12 0 1 0 8 0 mcl2k 2048 85966 0 85918 28 20 8 16 0 8 0 mtagpl 96 1754 0 1219 21 5 16 16 0 8 0 mbufpl 256 175358 0 174613 96 39 57 79 0 8 0 bufpl 288 13173 0 6765 458 0 458 458 0 8 0 anonpl 24 1502508 0 1481782 245 99 146 183 0 188 2 amapchunkpl 152 177366 0 176600 102 64 38 46 0 158 5 amappl16 200 15987 0 15134 95 48 47 69 0 8 0 amappl15 192 832 0 826 1 0 1 1 0 8 0 amappl14 184 287 0 282 1 0 1 1 0 8 0 amappl13 176 747 0 742 1 0 1 1 0 8 0 amappl12 168 670 0 665 2 1 1 1 0 8 0 amappl11 160 643 0 632 1 0 1 1 0 8 0 amappl10 152 538 0 533 1 0 1 1 0 8 0 amappl9 144 1479 0 1475 1 0 1 1 0 8 0 amappl8 136 1598 0 1507 4 0 4 4 0 8 0 amappl7 128 811 0 798 1 0 1 1 0 8 0 amappl6 120 1280 0 1255 2 1 1 2 0 8 0 amappl5 112 4485 0 4469 1 0 1 1 0 8 0 amappl4 104 2451 0 2420 2 1 1 2 0 8 0 amappl3 96 1737 0 1722 1 0 1 1 0 8 0 amappl2 88 1438 0 1380 3 1 2 3 0 8 0 amappl1 80 97063 0 96512 18 5 13 18 0 8 0 amappl 88 62931 0 62673 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 95 0 2 2 0 2 2 0 8 0 uaddrrnd 24 5524 0 5409 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5524 0 5409 1 0 1 1 0 8 0 vmmpekpl 168 40145 0 40088 3 0 3 3 0 8 0 vmmpepl 168 493431 0 488564 301 72 229 237 0 357 9 vmsppl 272 5523 0 5409 10 2 8 8 0 8 0 rwobjpl 24 121861 0 114004 48 0 48 48 0 8 0 pdppl 4096 11054 0 10906 427 275 152 152 0 8 4 pvpl 32 2552810 0 2530700 416 205 211 267 0 265 9 pmappl 216 5523 0 5409 7 0 7 7 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1761 0 847 28 0 28 28 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