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 0xffff80002159a520 rbx 0 rdx 0 rcx 0xffffffff829ef470 pf_npurge rax 0 r8 0x2b r9 0 r10 0x4e380cadf72a95e1 r11 0xaca633259bd80677 r12 0xffff80002159a530 r13 0xffff80002168d798 r14 0xffffffff829ef470 pf_npurge r15 0xffff80002159a560 rip 0xffffffff814e191e pf_purge+0x1e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002159a4f0 ss 0 pf_purge+0x1e: divl __kernel_phys_base+0x50f7dc,%eax ddb> show proc PROC (systq) pid=69963 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000fffff7a0,0xffff8000fffff270 process=0xffff8000ffffc000 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 35012 142210 94469 0 2 0 syz-executor.2 35012 353158 94469 0 3 0x4000080 fsleep syz-executor.2 95631 231048 22641 0 2 0 syz-executor.5 95631 119479 22641 0 3 0x4000080 fsleep syz-executor.5 95631 148526 22641 0 3 0x4000080 fsleep syz-executor.5 95631 272181 22641 0 3 0x4000080 fsleep syz-executor.5 45990 281670 70373 0 2 0 syz-executor.6 45990 257165 70373 0 3 0x4000000 smrbar syz-executor.6 6366 223695 48837 0 3 0x82 piperd syz-executor.7 70373 426667 48837 0 3 0x82 nanoslp syz-executor.6 22641 132304 48837 0 2 0x482 syz-executor.5 80017 78274 48837 0 3 0x82 piperd syz-executor.4 63879 491935 48837 0 3 0x82 piperd syz-executor.3 89972 440277 48837 0 3 0x82 piperd syz-executor.1 94469 271746 48837 0 3 0x82 nanoslp syz-executor.2 48837 279889 39269 0 2 0x2 syz-fuzzer 48837 313490 39269 0 3 0x4000082 thrsleep syz-fuzzer 48837 343292 39269 0 3 0x4000082 thrsleep syz-fuzzer 48837 162263 39269 0 3 0x4000082 kqread syz-fuzzer 48837 30192 39269 0 3 0x4000082 thrsleep syz-fuzzer 48837 145155 39269 0 3 0x4000082 thrsleep syz-fuzzer 48837 245860 39269 0 3 0x4000082 thrsleep syz-fuzzer 48837 120391 39269 0 3 0x4000082 thrsleep syz-fuzzer 39269 137449 9671 0 3 0x10008a sigsusp ksh 9671 213540 36468 0 3 0x9a kqread sshd 7584 356129 1 0 3 0x100083 ttyin getty 36468 230642 1 0 3 0x88 kqread sshd 40665 352982 42115 73 3 0x100090 kqread syslogd 42115 254156 1 0 3 0x100082 netio syslogd 84598 49429 1 0 3 0x100080 kqread resolvd 80487 480034 2835 77 3 0x100092 kqread dhcpleased 99244 485224 2835 77 3 0x100092 kqread dhcpleased 2835 158412 1 0 3 0x80 kqread dhcpleased 48366 63451 0 0 3 0x14200 bored smr 29728 502470 0 0 2 0x14200 zerothread 7961 501061 0 0 3 0x14200 aiodoned aiodoned 30618 202571 0 0 3 0x14200 syncer update 94794 267491 0 0 3 0x14200 cleaner cleaner 21440 223564 0 0 3 0x14200 reaper reaper 27481 299256 0 0 3 0x14200 pgdaemon pagedaemon 86945 87641 0 0 3 0x14200 bored viomb 30193 103581 0 0 3 0x40014200 acpi0 acpi0 69477 174720 0 0 3 0x14200 bored softnet 58233 212825 0 0 3 0x14200 bored systqmp *16547 69963 0 0 7 0x14200 systq 93274 401148 0 0 3 0x40014200 bored softclock 46692 324796 0 0 3 0x40014200 idle0 1 496212 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 10157 6398K 6538K 78643K 11278 0 pcb 14 8K 8K 78643K 17 0 rtable 216 6K 7K 78643K 354 0 ifaddr 74 15K 16K 78643K 98 0 counters 26 17K 17K 78643K 28 0 ioctlops 0 0K 4K 78643K 74 0 iov 0 0K 12K 78643K 85 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1270 79K 79K 78643K 1294 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 111 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 12 41K 77K 78643K 248 0 proc 57 55K 79K 78643K 458 0 subproc 91 5K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 88 5K 6K 78643K 99 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 43 201K 201K 78643K 43 0 exec 0 0K 2K 78643K 624 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 256 70K 79K 78643K 4307 0 UVM aobj 4 2K 2K 78643K 4 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 10 0K 2K 78643K 28 0 temp 76 4680K 4745K 78643K 4703 0 kqueue 13 20K 22K 78643K 35 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 36 0 33 1 0 1 1 0 8 0 rtentry 112 111 0 12 4 0 4 4 0 8 0 unpcb 136 347 0 331 8 0 8 8 0 8 7 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 41 0 41 1 0 1 1 0 8 1 tcpcb 736 8 0 4 1 0 1 1 0 8 0 arp 88 18 0 2 1 0 1 1 0 8 0 inpcb 304 107 0 99 4 0 4 4 0 8 3 nd6 48 24 0 3 1 0 1 1 0 8 0 kcovpl 48 8 0 1 1 0 1 1 0 8 0 pfrule 1360 4 0 4 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 453 0 44 29 0 29 29 0 8 2 art_table 32 454 0 44 4 0 4 4 0 8 0 art_node 16 110 0 20 1 0 1 1 0 8 0 semapl 112 108 0 98 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1626 0 199 90 0 90 90 0 8 0 ffsino 240 1626 0 199 85 0 85 85 0 8 0 nchpl 144 2124 0 506 63 0 63 63 0 8 0 uvmvnodes 80 1745 0 0 36 0 36 36 0 8 0 vnodes 224 1745 0 0 103 0 103 103 0 8 0 namei 1024 7257 0 7257 2 0 2 2 0 8 2 scxspl 216 6290 0 6290 3 1 2 2 0 8 2 plimitpl 152 90 0 77 1 0 1 1 0 8 0 sigapl 424 532 0 496 6 0 6 6 0 8 1 futexpl 64 1616 0 1612 1 0 1 1 0 8 0 knotepl 120 9220 0 9145 4 0 4 4 0 8 0 kqueuepl 184 64 0 20 3 0 3 3 0 8 0 pipepl 304 138 0 113 3 0 3 3 0 8 0 fdescpl 432 519 0 496 4 0 4 4 0 8 0 filepl 120 2725 0 2470 15 0 15 15 0 8 7 lockfpl 104 21 0 19 1 0 1 1 0 8 0 lockfspl 48 10 0 8 1 0 1 1 0 8 0 sessionpl 144 23 0 8 1 0 1 1 0 8 0 pgrppl 48 23 0 8 1 0 1 1 0 8 0 ucredpl 96 183 0 173 1 0 1 1 0 8 0 zombiepl 144 496 0 496 1 0 1 1 0 8 1 processpl 1000 532 0 496 6 0 6 6 0 8 0 procpl 672 749 0 701 7 0 7 7 0 8 2 sockpl 448 490 0 463 25 14 11 25 0 8 7 mcl64k 65536 6 0 6 1 0 1 1 0 8 1 mcl16k 16384 3 0 3 1 0 1 1 0 8 1 mcl12k 12288 8 0 8 1 0 1 1 0 8 1 mcl8k 8192 18 0 18 1 0 1 1 0 8 1 mcl4k 4096 20 0 20 1 0 1 1 0 8 1 mcl2k2 2112 2 0 2 1 0 1 1 0 8 1 mcl2k 2048 75878 0 75828 12 1 11 11 0 8 4 mtagpl 96 4 0 4 1 1 0 1 0 8 0 mbufpl 256 121220 0 121011 17 0 17 17 0 8 1 bufpl 288 4017 0 140 277 0 277 277 0 8 0 anonpl 24 101409 0 86607 113 1 112 112 0 188 0 amapchunkpl 152 9487 0 8817 33 0 33 33 0 158 2 amappl16 200 1019 0 428 33 0 33 33 0 8 0 amappl15 192 89 0 85 1 0 1 1 0 8 0 amappl14 184 2 0 1 1 0 1 1 0 8 0 amappl13 176 104 0 100 1 0 1 1 0 8 0 amappl12 168 45 0 41 1 0 1 1 0 8 0 amappl11 160 54 0 42 1 0 1 1 0 8 0 amappl10 152 92 0 85 1 0 1 1 0 8 0 amappl9 144 474 0 468 1 0 1 1 0 8 0 amappl8 136 545 0 506 2 0 2 2 0 8 0 amappl7 128 112 0 101 1 0 1 1 0 8 0 amappl6 120 212 0 193 2 1 1 2 0 8 0 amappl5 112 361 0 348 1 0 1 1 0 8 0 amappl4 104 813 0 787 2 1 1 2 0 8 0 amappl3 96 246 0 232 1 0 1 1 0 8 0 amappl2 88 550 0 504 3 1 2 3 0 8 0 amappl1 80 12409 0 11906 18 3 15 18 0 8 2 amappl 88 3886 0 3694 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 519 0 496 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 519 0 496 1 0 1 1 0 8 0 vmmpekpl 168 8642 0 8604 2 0 2 2 0 8 0 vmmpepl 168 52627 0 50468 129 0 129 129 0 357 27 vmsppl 272 518 0 496 4 1 3 3 0 8 1 rwobjpl 24 15195 0 12001 20 0 20 20 0 8 0 pdppl 4096 1044 0 992 90 26 64 70 0 8 12 pvpl 32 306085 0 287517 259 2 257 259 0 265 77 pmappl 216 518 0 496 2 0 2 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 644 0 44 18 0 18 18 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