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 0xffff80002159a260 rbx 0 rdx 0 rcx 0xffffffff829ef470 pf_npurge rax 0x3 r8 0 r9 0 r10 0x2bc30aeed56a9cf3 r11 0xca4a5c82c63176ce r12 0xffff80002159a270 r13 0xffff8000216a47f8 r14 0xffffffff829ef470 pf_npurge r15 0xffff80002159a2a0 rip 0xffffffff814e191e pf_purge+0x1e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002159a230 ss 0x10 pf_purge+0x1e: divl __kernel_phys_base+0x50f7dc,%eax ddb> show proc PROC (systq) pid=163629 stat=onproc flags process=14000 proc=200 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffed20,0xffff8000ffffe2b0 process=0xffff8000ffffc7d0 user=0xffff800021595000, vmspace=0xffffffff82a8bd58 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 42449 467118 32269 0 2 0 syz-executor.0 38769 229854 58766 0 2 0 syz-executor.3 38769 180325 58766 0 2 0x4000000 syz-executor.3 38769 229676 58766 0 2 0x4000000 syz-executor.3 78207 262 42124 0 2 0 syz-executor.1 78207 314828 42124 0 2 0x4000000 syz-executor.1 78236 55817 71966 0 2 0 syz-executor.5 72215 171830 72503 0 2 0 syz-executor.7 72215 135527 72503 0 2 0x4000000 syz-executor.7 73840 382612 92237 0 2 0 syz-executor.2 73840 438817 92237 0 2 0x4000000 syz-executor.2 17695 464092 21453 0 3 0x82 piperd syz-executor.6 32269 345982 21453 0 2 0x482 syz-executor.0 72503 503162 21453 0 2 0x482 syz-executor.7 71966 502619 21453 0 2 0x482 syz-executor.5 48393 415408 1 0 3 0x100083 ttyin getty 58766 312835 21453 0 2 0x482 syz-executor.3 14995 281935 0 0 3 0x14280 nfsidl nfsio 35076 117504 0 0 3 0x14280 nfsidl nfsio 32216 96312 0 0 3 0x14280 nfsidl nfsio 75338 467345 0 0 3 0x14280 nfsidl nfsio 87457 16020 0 0 3 0x14280 nfsidl nfsio 3011 280284 0 0 3 0x14280 nfsidl nfsio 23446 50597 0 0 3 0x14280 nfsidl nfsio 75226 469725 0 0 3 0x14280 nfsidl nfsio 32856 517616 0 0 3 0x14280 nfsidl nfsio 39907 508912 0 0 3 0x14280 nfsidl nfsio 38766 128556 0 0 3 0x14280 nfsidl nfsio 34342 443013 0 0 3 0x14280 nfsidl nfsio 89693 247842 0 0 3 0x14280 nfsidl nfsio 27130 476645 0 0 3 0x14280 nfsidl nfsio 44862 382934 0 0 3 0x14280 nfsidl nfsio 95768 295053 0 0 3 0x14280 nfsidl nfsio 6337 247239 0 0 3 0x14280 nfsidl nfsio 95349 218313 0 0 3 0x14280 nfsidl nfsio 73891 383297 0 0 3 0x14280 nfsidl nfsio 47140 267268 0 0 3 0x14280 nfsidl nfsio 30916 19133 0 0 3 0x14200 bored sosplice 77406 285039 21453 0 2 0x2 syz-executor.4 42124 443903 21453 0 2 0x482 syz-executor.1 92237 281691 21453 0 2 0x482 syz-executor.2 21453 359369 76307 0 3 0x82 thrsleep syz-fuzzer 21453 88067 76307 0 3 0x4000082 nanoslp syz-fuzzer 21453 280170 76307 0 3 0x4000082 thrsleep syz-fuzzer 21453 29691 76307 0 3 0x4000082 thrsleep syz-fuzzer 21453 375568 76307 0 3 0x4000082 kqread syz-fuzzer 21453 305346 76307 0 3 0x4000082 thrsleep syz-fuzzer 21453 491535 76307 0 3 0x4000082 thrsleep syz-fuzzer 21453 210828 76307 0 3 0x4000082 thrsleep syz-fuzzer 76307 460426 82821 0 3 0x10008a sigsusp ksh 82821 69378 69966 0 3 0x9a kqread sshd 69966 416313 1 0 3 0x88 kqread sshd 36319 398633 68672 73 3 0x100090 kqread syslogd 68672 460583 1 0 3 0x100082 netio syslogd 35625 22070 1 0 3 0x100080 kqread resolvd 40105 430560 9286 77 2 0x100012 dhcpleased 85986 221480 9286 77 3 0x100092 kqread dhcpleased 9286 489631 1 0 3 0x80 kqread dhcpleased 12233 102875 0 0 3 0x14200 bored smr 60759 106097 0 0 2 0x14200 zerothread 20815 201356 0 0 3 0x14200 aiodoned aiodoned 89287 62509 0 0 3 0x14200 syncer update 79193 251967 0 0 3 0x14200 cleaner cleaner 47142 53481 0 0 3 0x14200 reaper reaper 72376 405066 0 0 3 0x14200 pgdaemon pagedaemon 32131 37352 0 0 3 0x14200 bored viomb 68267 267949 0 0 3 0x40014200 acpi0 acpi0 79061 70863 0 0 3 0x14200 bored softnet 9587 323183 0 0 3 0x14200 bored systqmp *34488 163629 0 0 7 0x14200 systq 13574 256195 0 0 2 0x40014200 softclock 10220 513353 0 0 3 0x40014200 idle0 1 203708 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 10204 6669K 8392K 78643K 46296 0 pcb 14 16K 18K 78643K 692 0 rtable 238 24K 25K 78643K 3077 0 ifaddr 90 21K 23K 78643K 1470 0 sysctl 2 0K 0K 78643K 2 0 counters 26 17K 17K 78643K 90 0 ioctlops 0 0K 4K 78643K 2703 0 iov 0 0K 24K 78643K 717 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1582 99K 99K 78643K 9272 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 66 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 257 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 81K 78643K 6826 0 sigio 0 0K 0K 78643K 200 0 proc 62 55K 71K 78643K 1247 0 subproc 104 6K 6K 78643K 390 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 5783 0 in_multi 77 5K 7K 78643K 538 0 ether_multi 1 0K 0K 78643K 50 0 mrt 2 0K 0K 78643K 29 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 181 811K 811K 78643K 181 0 exec 0 0K 2K 78643K 2016 0 pfkey data 0 0K 0K 78643K 3 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 343 278K 298K 78643K 83086 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 275 0 NDP 10 0K 2K 78643K 143 0 temp 135 4717K 4781K 78643K 66004 0 kqueue 12 18K 26K 78643K 327 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 120 564 0 561 7 6 1 3 0 8 0 rtentry 112 431 0 345 4 0 4 4 0 8 0 unpcb 136 3121 0 3108 29 28 1 6 0 8 0 syncache 296 14 0 14 5 4 1 1 0 8 1 tcpqe 32 99 0 99 2 2 0 1 0 8 0 tcpcb 736 2033 0 2020 55 52 3 14 0 8 1 arp 88 64 0 49 1 0 1 1 0 8 0 ipq 40 7 0 7 2 2 0 1 0 8 0 ipqe 40 182 0 182 2 2 0 1 0 8 0 inpcb 304 7232 0 7224 64 60 4 12 0 8 3 rttmr 72 9 0 9 3 3 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 48 107 0 87 1 0 1 1 0 8 0 pkpcb 40 43 0 43 3 3 0 1 0 8 0 kcovpl 48 30 0 22 1 0 1 1 0 8 0 ppxss 1152 24 0 24 5 5 0 1 0 8 0 pfstscr 40 112 0 109 1 0 1 1 0 8 0 pfosfp 40 7 0 7 1 0 1 1 0 8 1 pfosfpen 112 7 0 7 1 0 1 1 0 8 1 pfrktable 1344 775 0 756 8 6 2 2 0 8 0 pftag 88 19 0 7 1 0 1 1 0 8 0 pfstitem 24 6 0 0 1 0 1 1 0 8 0 pfstkey 112 228 0 222 1 0 1 1 0 8 0 pfstate 320 114 0 111 1 0 1 1 0 8 0 pfrule 1360 1507 0 539 81 0 81 81 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1904 0 1498 36 7 29 31 0 8 0 art_table 32 1905 0 1498 4 0 4 4 0 8 0 art_node 16 430 0 354 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 4 1 0 1 1 0 8 0 semupl 112 7 0 7 2 2 0 1 0 8 0 semapl 112 252 0 242 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 9474 0 8030 91 0 91 91 0 8 0 ffsino 240 9474 0 8030 86 0 86 86 0 8 0 nchpl 144 17891 0 16275 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 66637 0 66637 6 5 1 2 0 8 1 vcpupl 1984 14 0 1 2 0 2 2 0 8 0 vmpool 528 19 0 6 1 0 1 1 0 8 0 pfiaddrpl 120 251 0 220 1 0 1 1 0 8 0 scxspl 216 52025 0 52025 20 18 2 8 0 8 2 plimitpl 152 634 0 620 1 0 1 1 0 8 0 sigapl 424 7092 0 7031 9 1 8 8 0 8 0 futexpl 64 71596 0 71596 1 0 1 1 0 8 1 knotepl 120 62089 0 62009 4 1 3 4 0 8 0 kqueuepl 184 1027 0 1018 15 13 2 4 0 8 1 pipepl 304 1268 0 1240 17 14 3 8 0 8 0 fdescpl 432 7057 0 7030 4 0 4 4 0 8 0 filepl 120 46926 0 46686 46 34 12 15 0 8 2 lockfpl 104 1762 0 1760 4 3 1 2 0 8 0 lockfspl 48 478 0 476 1 0 1 1 0 8 0 sessionpl 144 46 0 30 1 0 1 1 0 8 0 pgrppl 48 55 0 39 1 0 1 1 0 8 0 ucredpl 96 3803 0 3790 1 0 1 1 0 8 0 zombiepl 144 7031 0 7031 2 1 1 1 0 8 1 processpl 1000 7092 0 7031 11 3 8 9 0 8 0 procpl 672 16857 0 16784 18 11 7 9 0 8 0 sosppl 168 47 0 47 8 8 0 1 0 8 0 sockpl 448 10970 0 10946 166 159 7 30 0 8 4 mcl64k 65536 308 0 308 11 10 1 1 0 8 1 mcl16k 16384 72 0 72 12 11 1 1 0 8 1 mcl12k 12288 158 0 158 10 9 1 1 0 8 1 mcl9k 9216 116 0 116 15 15 0 1 0 8 0 mcl8k 8192 498 0 498 7 6 1 1 0 8 1 mcl4k 4096 732 0 732 6 5 1 1 0 8 1 mcl2k2 2112 72 0 72 10 9 1 1 0 8 1 mcl2k 2048 86524 0 86380 32 10 22 24 0 8 0 mtagpl 96 8942 0 7631 52 8 44 48 0 8 0 mbufpl 256 192819 0 191287 363 242 121 307 0 8 0 bufpl 288 13901 0 7492 458 0 458 458 0 8 0 anonpl 24 1835323 0 1816560 175 54 121 144 0 188 0 amapchunkpl 152 202624 0 201867 88 44 44 44 0 158 11 amappl16 200 17094 0 16444 72 35 37 47 0 8 2 amappl15 192 855 0 849 1 0 1 1 0 8 0 amappl14 184 879 0 876 1 0 1 1 0 8 0 amappl13 176 1586 0 1584 1 0 1 1 0 8 0 amappl12 168 830 0 824 1 0 1 1 0 8 0 amappl11 160 75 0 65 1 0 1 1 0 8 0 amappl10 152 174 0 167 1 0 1 1 0 8 0 amappl9 144 2940 0 2934 1 0 1 1 0 8 0 amappl8 136 1105 0 1029 3 0 3 3 0 8 0 amappl7 128 273 0 260 1 0 1 1 0 8 0 amappl6 120 2768 0 2739 2 1 1 2 0 8 0 amappl5 112 5759 0 5743 1 0 1 1 0 8 0 amappl4 104 1441 0 1415 2 1 1 2 0 8 0 amappl3 96 1982 0 1969 1 0 1 1 0 8 0 amappl2 88 2987 0 2929 3 1 2 3 0 8 0 amappl1 80 124799 0 124265 18 5 13 18 0 8 0 amappl 88 82196 0 81964 12 5 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 7076 0 7036 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7076 0 7036 1 0 1 1 0 8 0 vmmpekpl 168 49403 0 49352 3 0 3 3 0 8 0 vmmpepl 168 636453 0 633925 219 97 122 146 0 357 0 vmsppl 272 7075 0 7036 4 1 3 3 0 8 0 rwobjpl 24 150204 0 142556 49 1 48 48 0 8 0 pdppl 4096 14158 0 14085 287 210 77 79 0 8 4 pvpl 32 3114795 0 3091812 318 120 198 244 0 265 0 pmappl 216 7075 0 7036 3 0 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1708 0 720 34 3 31 34 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