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 0xffff80002159a530 rbx 0 rdx 0 rcx 0xffffffff829ef470 pf_npurge rax 0 r8 0x7f7fffffc000 r9 0 r10 0x570d1d50413d8869 r11 0x50359538bc6017fc r12 0xffff80002159a540 r13 0xffff8000264f4028 r14 0xffffffff829ef470 pf_npurge r15 0xffff80002159a570 rip 0xffffffff814e191e pf_purge+0x1e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002159a500 ss 0x10 pf_purge+0x1e: divl __kernel_phys_base+0x50f7dc,%eax ddb> show proc PROC (systq) pid=443916 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffe540,0xffff8000ffffe2b0 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 42682 103886 62890 0 2 0 syz-executor.3 42682 175077 62890 0 2 0x4000000 syz-executor.3 2269 114810 93295 0 2 0 syz-executor.2 78945 23757 12315 0 2 0 syz-executor.0 78945 259258 12315 0 2 0x4000000 syz-executor.0 19376 424636 46371 0 2 0 syz-executor.5 19376 25863 46371 0 2 0x4000000 syz-executor.5 12315 75500 78529 0 3 0x82 nanoslp syz-executor.0 97591 398115 0 0 3 0x14200 bored sosplice 60894 346401 78529 0 3 0x82 piperd syz-executor.6 46371 342333 78529 0 2 0x482 syz-executor.5 93297 180099 78529 0 2 0x482 syz-executor.4 62890 165192 78529 0 2 0x482 syz-executor.3 20759 491611 78529 0 2 0x482 syz-executor.7 93295 35701 78529 0 3 0x82 nanoslp syz-executor.2 79846 3504 78529 0 2 0x2 syz-executor.1 78529 395896 9183 0 3 0x82 thrsleep syz-fuzzer 78529 410664 9183 0 2 0x4000482 syz-fuzzer 78529 71584 9183 0 3 0x4000082 kqread syz-fuzzer 78529 408409 9183 0 3 0x4000082 thrsleep syz-fuzzer 78529 501060 9183 0 3 0x4000082 thrsleep syz-fuzzer 78529 157278 9183 0 3 0x4000082 thrsleep syz-fuzzer 78529 286417 9183 0 3 0x4000082 thrsleep syz-fuzzer 78529 41377 9183 0 3 0x4000082 thrsleep syz-fuzzer 78529 285626 9183 0 3 0x4000082 thrsleep syz-fuzzer 9183 102325 9171 0 3 0x10008a sigsusp ksh 9171 347340 38350 0 3 0x9a kqread sshd 1080 517701 1 0 3 0x100083 ttyin getty 38350 234291 1 0 3 0x88 kqread sshd 50088 333927 91060 73 3 0x100090 kqread syslogd 91060 428239 1 0 3 0x100082 netio syslogd 7636 466883 1 0 3 0x100080 kqread resolvd 55540 460304 54089 77 3 0x100092 kqread dhcpleased 88447 246469 54089 77 3 0x100092 kqread dhcpleased 54089 78250 1 0 3 0x80 kqread dhcpleased 51747 223920 0 0 3 0x14200 bored smr 15885 393873 0 0 2 0x14200 zerothread 25240 265524 0 0 3 0x14200 aiodoned aiodoned 53073 1614 0 0 3 0x14200 syncer update 31737 149237 0 0 3 0x14200 cleaner cleaner 31572 59376 0 0 3 0x14200 reaper reaper 63814 215125 0 0 3 0x14200 pgdaemon pagedaemon 69451 173682 0 0 3 0x14200 bored viomb 5822 298880 0 0 3 0x40014200 acpi0 acpi0 56207 507091 0 0 3 0x14200 bored softnet 46894 495071 0 0 3 0x14200 bored systqmp *45845 443916 0 0 7 0x14200 systq 9693 203239 0 0 3 0x40014200 bored softclock 82758 9754 0 0 3 0x40014200 idle0 1 273143 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 10162 6400K 6424K 78643K 11311 0 pcb 13 8K 8K 78643K 19 0 rtable 222 6K 7K 78643K 387 0 ifaddr 82 17K 17K 78643K 90 0 counters 27 17K 17K 78643K 28 0 ioctlops 0 0K 2K 78643K 40 0 iov 0 0K 12K 78643K 11 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1272 79K 80K 78643K 1329 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 0K 0K 78643K 2 0 sem 10 0K 0K 78643K 10 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 85K 78643K 1011 0 sigio 0 0K 0K 78643K 2 0 proc 55 54K 79K 78643K 478 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 5 0 in_multi 99 6K 6K 78643K 116 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 711 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 264 79K 81K 78643K 13080 0 UVM aobj 19 5K 5K 78643K 19 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 11 0K 2K 78643K 30 0 temp 124 4691K 4755K 78643K 21455 0 kqueue 12 18K 22K 78643K 155 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 38 0 35 1 0 1 1 0 8 0 rtentry 112 123 0 21 4 0 4 4 0 8 0 unpcb 136 307 0 294 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 134 0 134 1 1 0 1 0 8 0 tcpcb 736 32 0 25 1 0 1 1 0 8 0 arp 88 20 0 2 1 0 1 1 0 8 0 ipq 40 1 0 1 1 0 1 1 0 8 1 ipqe 40 44 0 44 1 0 1 1 0 8 1 inpcb 304 219 0 212 1 0 1 1 0 8 0 nd6 48 27 0 3 1 0 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 528 0 85 29 0 29 29 0 8 1 art_table 32 529 0 85 4 0 4 4 0 8 0 art_node 16 122 0 32 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 18 1 0 1 1 0 8 1 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 16 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2431 0 1002 90 0 90 90 0 8 0 ffsino 240 2431 0 1002 85 0 85 85 0 8 0 nchpl 144 3671 0 2046 63 0 63 63 0 8 0 uvmvnodes 80 2567 0 0 53 0 53 53 0 8 0 vnodes 224 2567 0 0 151 0 151 151 0 8 0 namei 1024 11109 0 11109 2 1 1 2 0 8 1 scxspl 216 10998 0 10998 9 4 5 8 0 8 5 plimitpl 152 66 0 52 1 0 1 1 0 8 0 sigapl 424 1295 0 1256 6 1 5 6 0 8 0 futexpl 64 3927 0 3927 1 0 1 1 0 8 1 knotepl 120 14886 0 14806 10 0 10 10 0 8 6 kqueuepl 184 354 0 346 1 0 1 1 0 8 0 pipepl 304 154 0 126 3 0 3 3 0 8 0 fdescpl 432 1281 0 1256 5 1 4 4 0 8 0 filepl 120 4126 0 3893 8 0 8 8 0 8 0 lockfpl 104 35 0 33 1 0 1 1 0 8 0 lockfspl 48 16 0 14 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 96 773 0 763 1 0 1 1 0 8 0 zombiepl 144 1256 0 1254 1 0 1 1 0 8 0 processpl 1000 1295 0 1254 6 0 6 6 0 8 0 procpl 672 2250 0 2198 7 1 6 7 0 8 1 sosppl 168 2 0 2 1 1 0 1 0 8 0 sockpl 448 564 0 541 4 0 4 4 0 8 1 mcl64k 65536 8 0 8 1 0 1 1 0 8 1 mcl12k 12288 8 0 8 2 1 1 1 0 8 1 mcl9k 9216 3 0 3 1 1 0 1 0 8 0 mcl8k 8192 54 0 54 2 1 1 1 0 8 1 mcl4k 4096 17 0 17 1 0 1 1 0 8 1 mcl2k2 2112 5 0 5 1 0 1 1 0 8 1 mcl2k 2048 71108 0 71060 21 11 10 18 0 8 3 mtagpl 96 4 0 4 1 1 0 1 0 8 0 mbufpl 256 117821 0 117553 30 3 27 28 0 8 8 bufpl 288 4618 0 147 320 0 320 320 0 8 0 anonpl 24 284096 0 269747 105 1 104 104 0 188 3 amapchunkpl 152 30398 0 29727 33 1 32 33 0 158 1 amappl16 200 2304 0 1790 28 0 28 28 0 8 0 amappl15 192 297 0 293 1 0 1 1 0 8 0 amappl14 184 226 0 223 1 0 1 1 0 8 0 amappl13 176 320 0 317 1 0 1 1 0 8 0 amappl12 168 24 0 21 1 0 1 1 0 8 0 amappl11 160 40 0 30 1 0 1 1 0 8 0 amappl10 152 125 0 124 1 0 1 1 0 8 0 amappl9 144 458 0 455 1 0 1 1 0 8 0 amappl8 136 801 0 749 2 0 2 2 0 8 0 amappl7 128 351 0 337 1 0 1 1 0 8 0 amappl6 120 192 0 172 2 1 1 2 0 8 0 amappl5 112 1082 0 1067 1 0 1 1 0 8 0 amappl4 104 912 0 884 2 0 2 2 0 8 0 amappl3 96 187 0 176 1 0 1 1 0 8 0 amappl2 88 803 0 758 3 1 2 3 0 8 0 amappl1 80 24463 0 23950 18 5 13 18 0 8 0 amappl 88 12640 0 12442 6 0 6 6 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 18 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1281 0 1256 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1281 0 1256 1 0 1 1 0 8 0 vmmpekpl 168 11495 0 11457 2 0 2 2 0 8 0 vmmpepl 168 115933 0 113756 123 10 113 123 0 357 14 vmsppl 272 1280 0 1256 3 1 2 3 0 8 0 rwobjpl 24 29179 0 25220 25 0 25 25 0 8 0 pdppl 4096 2568 0 2512 114 50 64 74 0 8 8 pvpl 32 602433 0 584180 258 14 244 258 0 265 77 pmappl 216 1280 0 1256 2 0 2 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 710 0 69 19 0 19 19 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