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 0xffff80002159a890 rbx 0 rdx 0 rcx 0xffffffff829ef470 pf_npurge rax 0x1 r8 0xffff80002e7c0a80 r9 0 r10 0xae5ffbfbe5ce593 r11 0x1e7ff22f31731994 r12 0xffff80002159a8a0 r13 0xffff8000216213a0 r14 0xffffffff829ef470 pf_npurge r15 0xffff80002159a8d0 rip 0xffffffff814e191e pf_purge+0x1e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002159a860 ss 0x10 pf_purge+0x1e: divl __kernel_phys_base+0x50f7dc,%eax ddb> show proc PROC (systq) pid=110362 stat=onproc flags process=14000 proc=200 pri=32, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000fffff500,0xffff8000ffffefd0 process=0xffff8000ffffc3e8 user=0xffff800021595000, vmspace=0xffffffff82a8bd58 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 58131 44683 15228 0 2 0 syz-executor.7 58131 481929 15228 0 3 0x4000080 fsleep syz-executor.7 80375 135416 63888 0 2 0 syz-executor.1 80375 54478 63888 0 2 0x4000000 syz-executor.1 80375 141251 63888 0 3 0x4000080 fsleep syz-executor.1 92083 1915 63820 0 2 0x480 syz-executor.3 92083 176811 63820 0 3 0x4000080 fsleep syz-executor.3 90407 43069 25319 0 2 0x482 syz-executor.0 87061 386720 25319 0 2 0x2 syz-executor.4 87869 313634 0 0 3 0x14200 bored sosplice 8086 155633 0 0 3 0x14200 acct acct 91457 74110 25319 0 2 0x482 syz-executor.5 15228 403925 25319 0 2 0x482 syz-executor.7 58624 165324 25319 0 2 0x482 syz-executor.6 63820 261209 25319 0 2 0x482 syz-executor.3 198 153722 25319 0 2 0x482 syz-executor.2 63888 192802 25319 0 2 0x482 syz-executor.1 25319 397823 72245 0 3 0x82 thrsleep syz-fuzzer 25319 64685 72245 0 2 0x4000482 syz-fuzzer 25319 46892 72245 0 3 0x4000082 thrsleep syz-fuzzer 25319 240147 72245 0 3 0x4000082 thrsleep syz-fuzzer 25319 195820 72245 0 2 0x4000482 syz-fuzzer 25319 176806 72245 0 3 0x4000082 thrsleep syz-fuzzer 25319 9800 72245 0 3 0x4000082 thrsleep syz-fuzzer 25319 496778 72245 0 3 0x4000082 thrsleep syz-fuzzer 25319 292389 72245 0 3 0x4000082 thrsleep syz-fuzzer 72245 97333 21 0 3 0x10008a sigsusp ksh 21 8846 37766 0 3 0x9a kqread sshd 74006 438692 1 0 3 0x100083 ttyin getty 37766 155489 1 0 3 0x88 kqread sshd 73472 54597 66045 73 3 0x100090 kqread syslogd 66045 79255 1 0 3 0x100082 netio syslogd 32487 147250 1 0 3 0x100080 kqread resolvd 51281 349242 18713 77 3 0x100092 kqread dhcpleased 13519 62868 18713 77 3 0x100092 kqread dhcpleased 18713 302864 1 0 3 0x80 kqread dhcpleased 4058 276952 0 0 2 0x14200 smr 1501 261610 0 0 2 0x14200 zerothread 14702 199045 0 0 3 0x14200 aiodoned aiodoned 31083 227559 0 0 2 0x14600 update 53241 205882 0 0 3 0x14200 cleaner cleaner 20186 511224 0 0 3 0x14200 reaper reaper 9198 270853 0 0 3 0x14200 pgdaemon pagedaemon 20341 422656 0 0 3 0x14200 bored viomb 30526 163828 0 0 3 0x40014200 acpi0 acpi0 75276 23431 0 0 3 0x14200 bored softnet 48817 196372 0 0 2 0x14200 systqmp *30818 110362 0 0 7 0x14200 systq 72271 212126 0 0 2 0x40014200 softclock 87773 459684 0 0 3 0x40014200 idle0 1 128051 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 10342 6567K 7207K 78643K 18656 0 pcb 13 14K 18K 78643K 262 0 rtable 231 14K 15K 78643K 867 0 ifaddr 95 20K 21K 78643K 302 0 sysctl 0 0K 2K 78643K 4 0 counters 27 17K 17K 78643K 48 0 ioctlops 0 0K 4K 78643K 759 0 iov 0 0K 16K 78643K 151 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1404 88K 88K 78643K 3517 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 17 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 347 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 13 45K 81K 78643K 1837 0 sigio 0 0K 0K 78643K 95 0 proc 58 55K 79K 78643K 745 0 subproc 104 6K 6K 78643K 208 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 63 0 in_multi 85 5K 6K 78643K 250 0 ether_multi 1 0K 0K 78643K 17 0 mrt 0 0K 0K 78643K 9 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 2K 78643K 1038 0 pfkey data 0 0K 1K 78643K 35 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 312 178K 819K 78643K 23447 0 UVM aobj 73 3K 4K 78643K 76 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 65 0 NDP 12 0K 1K 78643K 65 0 temp 132 4699K 4778K 78643K 20411 0 kqueue 12 18K 24K 78643K 165 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 120 200 0 197 3 2 1 3 0 8 0 rtentry 112 219 0 131 4 0 4 4 0 8 0 unpcb 136 986 0 973 7 6 1 5 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 15 0 15 1 1 0 1 0 8 0 tcpcb 736 508 0 503 27 25 2 14 0 8 1 arp 88 36 0 20 1 0 1 1 0 8 0 ipq 40 4 0 4 1 1 0 1 0 8 0 ipqe 40 10 0 10 1 1 0 1 0 8 0 inpcb 304 1533 0 1526 32 28 4 19 0 8 3 rttmr 72 3 0 3 1 1 0 1 0 8 0 nd6 48 49 0 27 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 16 0 8 1 0 1 1 0 8 0 ppxss 1152 7 0 7 2 2 0 1 0 8 0 pfstscr 40 4 0 3 1 0 1 1 0 8 0 pfrktable 1344 54 0 38 3 1 2 2 0 8 0 pftag 88 11 0 4 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 8 0 6 1 0 1 1 0 8 0 pfstate 320 4 0 3 1 0 1 1 0 8 0 pfrule 1360 302 0 265 4 0 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 992 0 636 31 8 23 29 0 8 0 art_table 32 993 0 636 4 0 4 4 0 8 0 art_node 16 218 0 141 1 0 1 1 0 8 0 sysvmsgpl 40 105 0 99 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 343 0 333 1 0 1 1 0 8 0 shmpl 112 73 0 3 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3656 0 2217 91 0 91 91 0 8 0 ffsino 240 3656 0 2217 85 0 85 85 0 8 0 nchpl 144 6162 0 4539 62 0 62 62 0 8 0 uvmvnodes 80 5737 0 0 118 0 118 118 0 8 0 vnodes 224 5737 0 0 338 0 338 338 0 8 0 namei 1024 23854 0 23853 2 1 1 2 0 8 0 vcpupl 1984 7 0 0 1 0 1 1 0 8 0 vmpool 528 10 0 3 2 1 1 1 0 8 0 pfiaddrpl 120 30 0 7 1 0 1 1 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 17848 0 17848 10 9 1 8 0 8 1 plimitpl 152 147 0 133 1 0 1 1 0 8 0 sigapl 424 2108 0 2068 6 0 6 6 0 8 0 futexpl 64 19388 0 19385 1 0 1 1 0 8 0 knotepl 120 24193 0 24113 10 6 4 9 0 8 0 kqueuepl 184 363 0 355 4 3 1 4 0 8 0 pipepl 304 475 0 447 12 7 5 8 0 8 2 fdescpl 432 2093 0 2068 4 0 4 4 0 8 0 filepl 120 14002 0 13762 26 16 10 15 0 8 2 lockfpl 104 453 0 449 2 1 1 2 0 8 0 lockfspl 48 147 0 143 1 0 1 1 0 8 0 sessionpl 144 31 0 15 1 0 1 1 0 8 0 pgrppl 48 37 0 21 1 0 1 1 0 8 0 ucredpl 96 1500 0 1487 1 0 1 1 0 8 0 zombiepl 144 2069 0 2065 1 0 1 1 0 8 0 processpl 1000 2108 0 2065 6 0 6 6 0 8 0 procpl 672 4761 0 4706 8 2 6 7 0 8 1 sosppl 168 22 0 22 4 3 1 1 0 8 1 sockpl 448 2727 0 2704 57 50 7 29 0 8 4 mcl64k 65536 50 0 50 3 2 1 1 0 8 1 mcl16k 16384 17 0 17 3 3 0 1 0 8 0 mcl12k 12288 49 0 49 5 4 1 1 0 8 1 mcl9k 9216 18 0 18 5 4 1 1 0 8 1 mcl8k 8192 182 0 182 3 2 1 1 0 8 1 mcl4k 4096 248 0 248 3 2 1 1 0 8 1 mcl2k2 2112 22 0 22 6 5 1 1 0 8 1 mcl2k 2048 77429 0 77242 38 13 25 25 0 8 0 mtagpl 96 1754 0 669 29 2 27 27 0 8 0 mbufpl 256 135756 0 134127 116 14 102 102 0 8 0 bufpl 288 6365 0 140 445 0 445 445 0 8 0 anonpl 24 565697 0 547721 171 46 125 161 0 188 0 amapchunkpl 152 96572 0 95847 670 478 192 659 0 158 158 amappl16 200 6661 0 5935 73 31 42 58 0 8 0 amappl15 192 390 0 385 1 0 1 1 0 8 0 amappl14 184 608 0 603 1 0 1 1 0 8 0 amappl13 176 139 0 137 1 0 1 1 0 8 0 amappl12 168 91 0 85 1 0 1 1 0 8 0 amappl11 160 48 0 38 1 0 1 1 0 8 0 amappl10 152 237 0 234 1 0 1 1 0 8 0 amappl9 144 493 0 490 1 0 1 1 0 8 0 amappl8 136 1373 0 1308 3 0 3 3 0 8 0 amappl7 128 777 0 760 1 0 1 1 0 8 0 amappl6 120 263 0 241 2 1 1 2 0 8 0 amappl5 112 1886 0 1872 1 0 1 1 0 8 0 amappl4 104 1202 0 1173 2 0 2 2 0 8 0 amappl3 96 355 0 340 1 0 1 1 0 8 0 amappl2 88 712 0 664 3 1 2 3 0 8 0 amappl1 80 40417 0 39888 19 6 13 18 0 8 0 amappl 88 22839 0 22620 9 2 7 7 0 92 1 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 75 0 3 2 0 2 2 0 8 0 uaddrrnd 24 2103 0 2071 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2103 0 2071 1 0 1 1 0 8 0 vmmpekpl 168 18718 0 18666 3 0 3 3 0 8 0 vmmpepl 168 197954 0 195500 180 37 143 149 0 357 26 vmsppl 272 2102 0 2071 5 2 3 3 0 8 0 rwobjpl 24 53769 0 46317 47 1 46 46 0 8 0 pdppl 4096 4212 0 4149 186 117 69 72 0 8 6 pvpl 32 1049992 0 1028030 268 61 207 258 0 265 5 pmappl 216 2102 0 2071 2 0 2 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1106 0 241 25 0 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