kernel: integer divide fault trap, code=0 Stopped at pf_purge+0x1e: divl __kernel_phys_base+0x2dc16c,%eax ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace pf_purge(ffffffff829ab6c0) at pf_purge+0x1e sys/net/pf.c:1302 taskq_thread(ffffffff828e01c0) at taskq_thread+0x9b sys/kern/kern_task.c:449 end trace frame: 0x0, count: -2 ddb> show registers rdi 0xffffffff829ab6c0 pf_npurge rsi 0 rbp 0xffff80002159ab80 rbx 0 rdx 0 rcx 0xffffffff829ab6c0 pf_npurge rax 0x1 r8 0 r9 0 r10 0x4650cce22cc0a1dc r11 0x5c046bfa7bfb51b2 r12 0xffff80002159ab90 r13 0xffff8000216267f0 r14 0xffffffff829ab6c0 pf_npurge r15 0xffff80002159abc0 rip 0xffffffff816d2bae pf_purge+0x1e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002159ab50 ss 0x10 pf_purge+0x1e: divl __kernel_phys_base+0x2dc16c,%eax ddb> show proc PROC (systq) pid=128217 stat=onproc flags process=14000 proc=200 pri=50, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffe000,0xffff8000ffffe550 process=0xffff8000ffffc7d0 user=0xffff800021595000, vmspace=0xffffffff829a27b0 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 32325 233804 72023 0 2 0 syz-executor.3 32325 277112 72023 0 3 0x4000080 fsleep syz-executor.3 21582 87633 62353 60929 2 0x10 syz-executor.0 21582 127335 62353 60929 2 0x4000010 syz-executor.0 21582 233319 62353 60929 3 0x4000090 fsleep syz-executor.0 92848 409118 28161 0 2 0 syz-executor.1 92848 223060 28161 0 3 0x4000080 fsleep syz-executor.1 11931 147811 64352 0 2 0 syz-executor.5 11931 103598 64352 0 2 0x4000000 syz-executor.5 79468 350814 33986 0 2 0 syz-executor.2 79468 254995 33986 0 3 0x4000080 fsleep syz-executor.2 1893 314910 76787 0 2 0 syz-executor.6 1893 263600 76787 0 3 0x4000080 netcon2 syz-executor.6 1893 277751 76787 0 3 0x4000080 netcon syz-executor.6 72023 243573 63049 0 2 0x482 syz-executor.3 33986 170060 63049 0 2 0x482 syz-executor.2 46051 65638 63049 0 2 0x2 syz-executor.4 76787 265629 63049 0 2 0x482 syz-executor.6 28161 101507 63049 0 2 0x482 syz-executor.1 62353 421925 63049 0 2 0x482 syz-executor.0 41554 408028 63049 0 2 0x482 syz-executor.7 87501 374766 1 0 3 0x100083 ttyin getty 48327 453903 0 0 3 0x14280 nfsidl nfsio 60504 151992 0 0 3 0x14280 nfsidl nfsio 68315 165012 0 0 3 0x14280 nfsidl nfsio 3966 232915 0 0 3 0x14280 nfsidl nfsio 8179 323658 0 0 3 0x14280 nfsidl nfsio 53829 102180 0 0 3 0x14280 nfsidl nfsio 80273 104260 0 0 3 0x14280 nfsidl nfsio 722 474092 0 0 3 0x14280 nfsidl nfsio 23052 425889 0 0 3 0x14280 nfsidl nfsio 88637 474847 0 0 3 0x14280 nfsidl nfsio 51235 27803 0 0 3 0x14280 nfsidl nfsio 52519 396314 0 0 3 0x14280 nfsidl nfsio 1445 516181 0 0 3 0x14280 nfsidl nfsio 2351 434098 0 0 3 0x14280 nfsidl nfsio 14784 252613 0 0 3 0x14280 nfsidl nfsio 66670 343524 0 0 3 0x14280 nfsidl nfsio 45222 312733 0 0 3 0x14280 nfsidl nfsio 39170 228135 0 0 3 0x14280 nfsidl nfsio 31435 433237 0 0 3 0x14280 nfsidl nfsio 78198 151527 0 0 3 0x14280 nfsidl nfsio 9524 269434 0 0 3 0x14200 acct acct 32620 405687 0 0 3 0x14200 bored sosplice 64352 357994 63049 0 2 0x482 syz-executor.5 63049 398637 73322 0 3 0x82 thrsleep syz-fuzzer 63049 130179 73322 0 3 0x4000082 nanoslp syz-fuzzer 63049 9491 73322 0 3 0x4000082 thrsleep syz-fuzzer 63049 174977 73322 0 3 0x4000082 thrsleep syz-fuzzer 63049 159651 73322 0 2 0x4000482 syz-fuzzer 63049 140685 73322 0 3 0x4000082 thrsleep syz-fuzzer 63049 82800 73322 0 3 0x4000082 thrsleep syz-fuzzer 63049 241033 73322 0 3 0x4000082 thrsleep syz-fuzzer 73322 458338 96265 0 3 0x10008a sigsusp ksh 96265 222484 1394 0 3 0x9a poll sshd 1394 453936 1 0 3 0x88 poll sshd 29968 420935 67695 73 3 0x100090 kqread syslogd 67695 283847 1 0 3 0x100082 netio syslogd 74959 379257 1 0 3 0x100080 kqread resolvd 93123 315432 82845 77 3 0x100092 kqread dhcpleased 93766 205541 82845 77 3 0x100092 kqread dhcpleased 82845 268878 1 0 3 0x80 kqread dhcpleased 56282 254632 0 0 3 0x14200 bored smr 86128 171230 0 0 2 0x14200 zerothread 36420 189443 0 0 3 0x14200 aiodoned aiodoned 80049 241846 0 0 3 0x14200 syncer update 54167 483180 0 0 3 0x14200 cleaner cleaner 2614 323534 0 0 3 0x14200 reaper reaper 14211 35110 0 0 3 0x14200 pgdaemon pagedaemon 15393 119437 0 0 3 0x14200 bored viomb 16174 516363 0 0 3 0x40014200 acpi0 acpi0 99873 82455 0 0 3 0x14200 bored softnet 41259 328829 0 0 3 0x14200 bored systqmp *37665 128217 0 0 7 0x14200 systq 62308 429269 0 0 2 0x40014200 softclock 90705 330178 0 0 3 0x40014200 idle0 1 244385 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 10213 6449K 7972K 78643K 33620 0 pcb 13 16K 18K 78643K 2520 0 rtable 287 31K 31K 78643K 4136 0 ifaddr 114 28K 30K 78643K 1627 0 sysctl 2 0K 2K 78643K 6 0 counters 27 17K 17K 78643K 167 0 ioctlops 0 0K 4K 78643K 3402 0 iov 0 0K 32K 78643K 1264 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1644 103K 103K 78643K 8256 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 100 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 1223 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 77K 78643K 14314 0 sigio 0 0K 0K 78643K 228 0 proc 63 63K 79K 78643K 2268 0 subproc 104 6K 6K 78643K 728 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 536 0 in_multi 86 5K 7K 78643K 1053 0 ether_multi 1 0K 0K 78643K 157 0 mrt 1 0K 0K 78643K 53 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 253 1129K 1129K 78643K 253 0 exec 0 0K 2K 78643K 3729 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 450 536K 1174K 78643K 172590 0 UVM aobj 131 8K 8K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 733 0 NDP 12 0K 1K 78643K 285 0 temp 143 4719K 4795K 78643K 68264 0 kqueue 10 14K 26K 78643K 520 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 1943 0 1939 22 21 1 3 0 8 0 rtentry 112 832 0 735 4 1 3 4 0 8 0 unpcb 136 7083 0 7068 88 80 8 9 0 8 7 syncache 296 186 0 186 8 8 0 1 0 8 0 tcpqe 32 57 0 57 2 2 0 1 0 8 0 tcpcb 736 15556 0 15544 378 368 10 28 0 8 8 arp 88 120 0 100 1 0 1 1 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 38 0 38 1 1 0 1 0 8 0 inpcb 304 24003 0 23991 185 179 6 19 0 8 5 rttmr 72 9 0 9 3 3 0 1 0 8 0 nd6 48 203 0 180 1 0 1 1 0 8 0 pkpcb 40 33 0 33 7 7 0 1 0 8 0 kcovpl 48 56 0 48 1 0 1 1 0 8 0 ppxss 1152 52 0 52 8 8 0 1 0 8 0 pfstscr 40 55 0 54 8 7 1 1 0 8 0 pffrag 232 15 0 15 3 3 0 1 0 482 0 pffrnode 88 15 0 15 3 3 0 1 0 8 0 pffrent 40 178 0 178 3 3 0 1 0 8 0 pfosfp 40 11 0 8 1 0 1 1 0 8 0 pfosfpen 112 11 0 5 1 0 1 1 0 8 0 pfrke_plain 168 2 0 2 1 1 0 1 0 8 0 pfrktable 1344 426 0 395 11 8 3 4 0 8 0 pftag 88 66 0 53 2 1 1 1 0 8 0 pfqueue 264 7 0 0 1 0 1 1 0 8 0 pfstitem 24 22 0 20 5 4 1 1 0 8 0 pfstkey 112 90 0 88 8 7 1 1 0 8 0 pfstate 320 47 0 46 8 7 1 1 0 8 0 pfrule 1360 1214 0 802 36 1 35 35 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 3661 0 3255 50 23 27 31 0 8 0 art_table 32 3662 0 3255 4 0 4 4 0 8 0 art_node 16 764 0 676 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semapl 112 1221 0 1211 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 18940 0 17465 93 0 93 93 0 8 0 ffsino 240 18940 0 17465 87 0 87 87 0 8 0 nchpl 144 36770 0 35147 62 0 62 62 0 8 0 rtmask 32 4 0 4 1 1 0 1 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 126372 0 126370 6 5 1 2 0 8 0 vcpupl 1984 33 0 0 5 0 5 5 0 8 0 vmpool 528 48 0 15 3 0 3 3 0 8 0 pfiaddrpl 120 205 0 115 6 3 3 3 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 107193 0 107193 27 26 1 8 0 8 1 plimitpl 152 1068 0 1054 1 0 1 1 0 8 0 sigapl 424 14529 0 14467 9 1 8 8 0 8 0 futexpl 64 125159 0 125155 4 3 1 1 0 8 0 knotepl 112 5249 0 5174 3 0 3 3 0 8 0 kqueuepl 184 2709 0 2696 31 30 1 4 0 8 0 pipepl 304 2341 0 2313 57 54 3 11 0 8 0 fdescpl 432 14494 0 14467 7 3 4 4 0 8 0 filepl 120 95748 0 95503 126 112 14 16 0 8 5 lockfpl 104 2414 0 2412 3 2 1 2 0 8 0 lockfspl 48 747 0 745 1 0 1 1 0 8 0 sessionpl 144 75 0 59 1 0 1 1 0 8 0 pgrppl 48 78 0 62 1 0 1 1 0 8 0 ucredpl 96 9537 0 9519 1 0 1 1 0 8 0 zombiepl 144 14467 0 14466 1 0 1 1 0 8 0 processpl 1000 14529 0 14466 11 2 9 9 0 8 0 procpl 672 35029 0 34951 30 22 8 8 0 8 0 sosppl 168 81 0 81 21 21 0 1 0 8 0 sockpl 448 33082 0 33051 472 447 25 30 0 8 21 mcl64k 65536 555 0 555 26 25 1 1 0 8 1 mcl16k 16384 126 0 126 18 17 1 1 0 8 1 mcl12k 12288 406 0 406 25 25 0 1 0 8 0 mcl9k 9216 276 0 276 31 30 1 1 0 8 1 mcl8k 8192 989 0 989 23 22 1 1 0 8 1 mcl4k 4096 1434 0 1434 11 10 1 1 0 8 1 mcl2k2 2112 81 0 81 30 29 1 1 0 8 1 mcl2k 2048 114410 0 114340 58 47 11 25 0 8 0 mtagpl 96 4801 0 4165 46 27 19 20 0 8 0 mbufpl 256 280994 0 280185 142 84 58 64 0 8 0 bufpl 288 25633 0 19225 459 0 459 459 0 8 0 anonpl 24 3891220 0 3871282 240 105 135 152 0 188 5 amapchunkpl 152 548437 0 547622 2366 2175 191 661 0 158 157 amappl16 200 37507 0 36779 133 94 39 52 0 8 0 amappl15 192 1911 0 1906 1 0 1 1 0 8 0 amappl14 184 713 0 708 1 0 1 1 0 8 0 amappl13 176 1141 0 1134 1 0 1 1 0 8 0 amappl12 168 2151 0 2145 1 0 1 1 0 8 0 amappl11 160 3508 0 3494 1 0 1 1 0 8 0 amappl10 152 1376 0 1369 1 0 1 1 0 8 0 amappl9 144 2024 0 2020 1 0 1 1 0 8 0 amappl8 136 4391 0 4284 5 1 4 4 0 8 0 amappl7 128 3002 0 2990 1 0 1 1 0 8 0 amappl6 120 1910 0 1885 2 1 1 2 0 8 0 amappl5 112 11867 0 11851 1 0 1 1 0 8 0 amappl4 104 6694 0 6658 2 0 2 2 0 8 0 amappl3 96 3813 0 3797 1 0 1 1 0 8 0 amappl2 88 4171 0 4111 3 1 2 3 0 8 0 amappl1 80 251577 0 251012 19 6 13 18 0 8 0 amappl 88 171078 0 170805 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 14542 0 14482 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 14542 0 14482 1 0 1 1 0 8 0 vmmpekpl 168 92887 0 92823 5 1 4 4 0 8 0 vmmpepl 168 1312554 0 1309815 353 199 154 161 0 357 25 vmsppl 272 14541 0 14482 6 1 5 5 0 8 0 rwobjpl 24 302871 0 295055 50 1 49 49 0 8 0 pdppl 4096 29090 0 28997 761 664 97 99 0 8 4 pvpl 32 6452930 0 6429866 440 226 214 242 0 265 16 pmappl 216 14541 0 14482 4 0 4 4 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 2633 0 1716 27 0 27 27 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pf_purge(ffffffff829ab6c0) at pf_purge+0x1e sys/net/pf.c:1302 taskq_thread(ffffffff828e01c0) 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(ffffffff829ab6c0) at pf_purge+0x1e sys/net/pf.c:1302 taskq_thread(ffffffff828e01c0) at taskq_thread+0x9b sys/kern/kern_task.c:449 end trace frame: 0x0, count: -2