kernel: integer divide fault trap, code=0 Stopped at pf_get_transaddr+0x27b: idivl %r13d,%eax ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace pf_get_transaddr(ffff800000ca8fd0,ffff8000296d7398,ffff8000296d7258,ffff8000296d7280) at pf_get_transaddr+0x27b sys/net/pf_lb.c:711 pf_test_rule(ffff8000296d7398,ffff8000296d7490,ffff8000296d74a0,ffff8000296d7480,ffff8000296d7470,3,a1c166364f83c54a) at pf_test_rule+0x4a0 sys/net/pf.c:3891 pf_test(18,1,ffff800000ba0000,ffff8000296d7678) at pf_test+0x1e30 sys/net/pf.c:7064 ip6_input_if(ffff8000296d7678,ffff8000296d7684,29,0,ffff800000ba0000) at ip6_input_if+0x2db sys/netinet6/ip6_input.c:318 ipv6_input(ffff800000ba0000,fffffd8062484000) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 ether_input(ffff800000ba0000,fffffd8062484000) at ether_input+0x584 tun_dev_write(5d01,ffff8000296d79e8,ffff800023c9e000,2) at tun_dev_write+0x204 sys/net/if_tun.c:874 spec_write(ffff8000296d7840) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8065a8d550,ffff8000296d79e8,11,fffffd807f7d76c0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd806eef5008,ffff8000296d79e8,0) at vn_write+0x151 sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000296ba2a0,c8,ffff8000296d79e8,0,ffff8000296d7ad0) at dofilewritev+0x1a3 sys/kern/sys_generic.c:380 sys_write(ffff8000296ba2a0,ffff8000296d7a80,ffff8000296d7ad0) at sys_write+0x83 sys/kern/sys_generic.c:300 syscall(ffff8000296d7b50) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000296d7b50) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4e5a39cf870, count: -14 ddb{0}> show registers rdi 0xffff800023c9e000 rsi 0x137d __ALIGN_SIZE+0x37d rbp 0xffff8000296d7200 rbx 0xf rdx 0 rcx 0xffff __ALIGN_SIZE+0xefff rax 0x1 r8 0xffffffff81d44a2d pf_insert_src_node+0x2dd r9 0x1 r10 0x7d0b560047864d9d r11 0xf0c4f75f7122bb03 r12 0x18 r13 0 r14 0xffff8000296d7398 r15 0xffff800000ca8fd0 rip 0xffffffff81715cdb pf_get_transaddr+0x27b cs 0x8 rflags 0x10257 __ALIGN_SIZE+0xf257 rsp 0xffff8000296d7190 ss 0x10 pf_get_transaddr+0x27b: idivl %r13d,%eax ddb{0}> show proc PROC (syz-executor.1) pid=259477 stat=onproc flags process=0 proc=4000000 pri=78, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff8000296bafc0,0xffffffff828df2e0 process=0xffff8000ffff8438 user=0xffff8000296d2000, vmspace=0xfffffd806164b1a0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 2547 384164 28097 0 2 0x10 syz-executor.0 2547 436297 28097 0 3 0x4000090 fsleep syz-executor.0 18522 55294 36143 0 2 0 syz-executor.1 *18522 259477 36143 0 7 0x4000000 syz-executor.1 36143 296115 1211 0 2 0x2 syz-executor.1 28097 428284 1211 0 3 0x82 nanoslp syz-executor.0 2536 36321 1 0 3 0x100083 ttyopn getty 90728 238821 0 0 3 0x14200 acct acct 96338 493134 0 0 3 0x14280 nfsidl nfsio 84616 383615 0 0 3 0x14280 nfsidl nfsio 4235 450137 0 0 3 0x14280 nfsidl nfsio 8464 517847 0 0 3 0x14280 nfsidl nfsio 65764 358687 0 0 3 0x14280 nfsidl nfsio 74271 498095 0 0 3 0x14280 nfsidl nfsio 23857 370146 0 0 3 0x14280 nfsidl nfsio 38307 148093 0 0 3 0x14280 nfsidl nfsio 19708 217360 0 0 3 0x14280 nfsidl nfsio 74209 60830 0 0 3 0x14280 nfsidl nfsio 60409 290468 0 0 3 0x14280 nfsidl nfsio 60332 67164 0 0 3 0x14280 nfsidl nfsio 72588 280603 0 0 3 0x14280 nfsidl nfsio 43559 94375 0 0 3 0x14280 nfsidl nfsio 28095 347891 0 0 3 0x14280 nfsidl nfsio 82779 313105 0 0 3 0x14280 nfsidl nfsio 56865 337825 0 0 3 0x14280 nfsidl nfsio 5641 400627 0 0 3 0x14280 nfsidl nfsio 35682 388131 0 0 3 0x14280 nfsidl nfsio 52204 495015 0 0 3 0x14280 nfsidl nfsio 91697 413128 0 0 3 0x14200 bored sosplice 1211 271257 63702 0 3 0x82 thrsleep syz-fuzzer 1211 148477 63702 0 3 0x4000082 thrsleep syz-fuzzer 1211 183987 63702 0 3 0x4000082 thrsleep syz-fuzzer 1211 393425 63702 0 3 0x4000082 thrsleep syz-fuzzer 1211 18988 63702 0 3 0x4000082 thrsleep syz-fuzzer 1211 91695 63702 0 3 0x4000082 thrsleep syz-fuzzer 1211 31658 63702 0 3 0x4000082 kqread syz-fuzzer 1211 146001 63702 0 3 0x4000082 thrsleep syz-fuzzer 63702 445128 50413 0 3 0x10008a sigsusp ksh 50413 9851 63629 0 3 0x9a kqread sshd 63629 276677 1 0 3 0x88 kqread sshd 92119 237258 76022 74 3 0x100092 bpf pflogd 76022 183741 1 0 3 0x80 netio pflogd 28312 133298 96399 73 3 0x100090 kqread syslogd 96399 242579 1 0 3 0x100082 netio syslogd 99281 399249 1 0 3 0x100080 kqread resolvd 55537 478482 0 0 3 0x14200 bored smr 32588 294786 0 0 2 0x14200 zerothread 74626 170615 0 0 3 0x14200 aiodoned aiodoned 84411 412912 0 0 3 0x14200 syncer update 8090 398916 0 0 3 0x14200 cleaner cleaner 47247 437711 0 0 3 0x14200 reaper reaper 94746 187667 0 0 3 0x14200 pgdaemon pagedaemon 83686 191541 0 0 3 0x14200 bored viomb 29231 67073 0 0 3 0x40014200 acpi0 acpi0 67676 468429 0 0 7 0x40014200 idle1 85024 208437 0 0 3 0x14200 bored softnet 48058 370834 0 0 3 0x14200 bored systqmp 77306 44435 0 0 3 0x14200 bored systq 18301 294309 0 0 3 0x40014200 bored softclock 53598 333389 0 0 3 0x40014200 idle0 1 496971 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 18522 (syz-executor.1) thread 0xffff8000296ba2a0 (259477) exclusive rwlock pf_lock r = 0 (0xffffffff8279a5a0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 pf_test+0x1e06 #2 ip6_input_if+0x2db sys/netinet6/ip6_input.c:318 #3 ipv6_input+0x48 sys/netinet6/ip6_input.c:171 #4 ether_input+0x584 #5 tun_dev_write+0x204 sys/net/if_tun.c:874 #6 spec_write+0xd4 sys/kern/spec_vnops.c:309 #7 VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 #8 vn_write+0x151 sys/kern/vfs_vnops.c:414 #9 dofilewritev+0x1a3 sys/kern/sys_generic.c:380 #10 sys_write+0x83 sys/kern/sys_generic.c:300 #11 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #11 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #12 Xsyscall+0x128 exclusive rwlock netlock r = 0 (0xffffffff8282d820) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 tun_dev_write+0x1f9 sys/net/if_tun.c:873 #2 spec_write+0xd4 sys/kern/spec_vnops.c:309 #3 VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 #4 vn_write+0x151 sys/kern/vfs_vnops.c:414 #5 dofilewritev+0x1a3 sys/kern/sys_generic.c:380 #6 sys_write+0x83 sys/kern/sys_generic.c:300 #7 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828b0358) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x1a3 sys/kern/sys_generic.c:380 #3 sys_write+0x83 sys/kern/sys_generic.c:300 #4 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10131 6452K 7151K 78643K 15251 0 pcb 13 8K 8K 78643K 1366 0 rtable 167 28K 28K 78643K 2633 0 ifaddr 73 21K 22K 78643K 954 0 sysctl 3 1K 2K 78643K 11 0 counters 44 34K 34K 78643K 350 0 ioctlops 0 0K 4K 78643K 2740 0 iov 0 0K 24K 78643K 628 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1253 79K 79K 78643K 4060 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 87 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 1207 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 25K 78643K 9992 0 sigio 0 0K 0K 78643K 86 0 proc 66 63K 111K 78643K 1637 0 subproc 66 4K 4K 78643K 1100 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1072 0 in_multi 30 2K 2K 78643K 1679 0 ether_multi 1 0K 0K 78643K 396 0 mrt 1 0K 0K 78643K 31 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 109 493K 493K 78643K 109 0 exec 0 0K 2K 78643K 1684 0 pfkey data 0 0K 0K 78643K 6 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 447 863K 863K 78643K 127370 0 UVM aobj 131 8K 8K 78643K 154 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 2066 0 NDP 9 0K 0K 78643K 286 0 temp 93 4212K 8308K 78643K 139385 0 kqueue 6 10K 28K 78643K 598 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 498 0 497 1 0 1 1 0 8 0 rtentry 112 745 0 710 3 1 2 2 0 8 0 unpcb 128 15208 0 15200 26 25 1 2 0 8 0 syncache 296 15 0 15 6 6 0 1 0 8 0 tcpqe 32 4 0 4 4 4 0 1 0 8 0 tcpcb 736 4767 0 4759 28 26 2 5 0 8 1 arp 120 94 0 88 1 0 1 1 0 8 0 inpcb 304 10904 0 10900 14 12 2 3 0 8 1 nd6 48 180 0 174 2 1 1 1 0 8 0 pkpcb 40 40 0 40 10 10 0 1 0 8 0 kcovpl 48 33 0 31 1 0 1 1 0 8 0 ppxss 1248 35 0 35 21 21 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 71 0 71 5 5 0 1 0 482 0 pffrnode 88 71 0 71 5 5 0 1 0 8 0 pffrent 40 1589 0 1589 6 6 0 1 0 8 0 pfosfp 40 1430 0 1006 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 253 0 222 8 5 3 3 0 8 0 pfpktdelay 88 29 0 29 1 1 0 1 0 8 0 pftag 88 21 0 12 1 0 1 1 0 8 0 pfqueue 264 20 0 16 7 6 1 1 0 8 0 pfstitem 24 93 0 91 1 0 1 1 0 8 0 pfstkey 112 99 0 97 1 0 1 1 0 8 0 pfstate 320 98 0 96 4 3 1 3 0 8 0 pfsrctr 152 1 0 0 1 0 1 1 0 8 0 pfrule 1360 620 0 489 11 0 11 11 0 8 0 art_heap8 4096 9 0 8 5 4 1 3 0 8 0 art_heap4 256 4234 0 4081 54 42 12 14 0 8 1 art_table 32 4243 0 4089 5 3 2 2 0 8 0 art_node 16 741 0 712 1 0 1 1 0 8 0 sysvmsgpl 40 53 0 34 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 1201 0 1191 1 0 1 1 0 8 0 shmpl 112 151 0 23 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 13700 0 12272 92 2 90 90 0 8 0 ffsino 272 13700 0 12272 96 0 96 96 0 8 0 nchpl 144 27803 0 27347 61 42 19 61 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 82903 0 82903 7 6 1 1 0 8 1 percpumem 16 187 0 153 1 0 1 1 0 8 0 vcpupl 2048 85 0 2 11 0 11 11 0 8 0 vmpool 560 114 0 31 6 0 6 6 0 8 0 pfiaddrpl 120 93 0 45 3 1 2 2 0 8 0 scsiplug 72 4 0 4 4 4 0 1 0 8 0 scxspl 216 83656 0 83656 43 42 1 8 0 8 1 plimitpl 152 513 0 505 1 0 1 1 0 8 0 sigapl 424 10184 0 10132 7 0 7 7 0 8 0 futexpl 64 131888 0 131887 6 5 1 1 0 8 0 knotepl 112 228 0 0 3 0 3 3 0 8 0 kqueuepl 216 1714 0 1705 2 1 1 2 0 8 0 pipepl 336 1275 0 1265 15 13 2 2 0 8 1 fdescpl 496 10148 0 10132 3 0 3 3 0 8 0 filepl 152 64394 0 64266 32 26 6 8 0 8 1 lockfpl 104 1975 0 1974 1 0 1 1 0 8 0 lockfspl 48 579 0 578 1 0 1 1 0 8 0 sessionpl 144 51 0 41 1 0 1 1 0 8 0 pgrppl 48 81 0 71 1 0 1 1 0 8 0 ucredpl 96 6987 0 6975 1 0 1 1 0 8 0 zombiepl 144 10132 0 10132 2 1 1 1 0 8 1 processpl 1072 10184 0 10132 4 0 4 4 0 8 0 procpl 672 27347 0 27286 7 1 6 6 0 8 0 srpgc 96 16 0 16 7 7 0 1 0 8 0 sosppl 168 79 0 79 32 32 0 1 0 8 0 sockpl 480 26675 0 26662 54 50 4 8 0 8 1 mcl64k 65536 25 0 0 3 0 3 3 0 8 0 mcl16k 16384 23 0 0 3 1 2 3 0 8 0 mcl12k 12288 27 0 0 2 0 2 2 0 8 0 mcl9k 9216 28 0 0 2 0 2 2 0 8 0 mcl8k 8192 23 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 310 0 0 24 1 23 24 0 8 0 mtagpl 96 35 0 0 1 0 1 1 0 8 0 mbufpl 256 1128 0 0 36 0 36 36 0 8 0 bufpl 280 23054 0 16725 453 0 453 453 0 8 0 anonpl 24 2942224 0 2927902 286 178 108 130 0 186 0 amapchunkpl 152 315336 0 314726 154 127 27 40 0 158 0 amappl16 200 25604 0 25026 189 158 31 43 0 8 0 amappl15 192 1721 0 1716 1 0 1 1 0 8 0 amappl14 184 715 0 713 3 2 1 1 0 8 0 amappl13 176 1653 0 1651 1 0 1 1 0 8 0 amappl12 168 1168 0 1162 1 0 1 1 0 8 0 amappl11 160 403 0 390 1 0 1 1 0 8 0 amappl10 152 773 0 768 1 0 1 1 0 8 0 amappl9 144 2399 0 2398 1 0 1 1 0 8 0 amappl8 136 2752 0 2644 5 1 4 4 0 8 0 amappl7 128 1781 0 1772 1 0 1 1 0 8 0 amappl6 120 2333 0 2318 1 0 1 1 0 8 0 amappl5 112 9517 0 9497 1 0 1 1 0 8 0 amappl4 104 1762 0 1731 1 0 1 1 0 8 0 amappl3 96 2083 0 2066 1 0 1 1 0 8 0 amappl2 88 12984 0 12931 3 1 2 2 0 8 0 amappl1 80 177236 0 176823 13 3 10 13 0 8 0 amappl 88 126209 0 125976 7 1 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 64 153 0 23 3 0 3 3 0 8 0 uaddrrnd 24 10262 0 10163 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10262 0 10163 1 0 1 1 0 8 0 vmmpekpl 168 72117 0 72073 3 0 3 3 0 8 0 vmmpepl 168 933948 0 931911 437 319 118 118 0 357 23 vmsppl 368 10261 0 10163 10 1 9 9 0 8 0 rwobjpl 56 222418 0 220986 64 43 21 24 0 8 0 pdppl 4096 20532 0 20409 185 61 124 124 0 8 1 pvpl 32 5030344 0 5012700 437 265 172 205 0 265 0 pmappl 224 10261 0 10163 6 0 6 6 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 592 0 159 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pf_get_transaddr(ffff800000ca8fd0,ffff8000296d7398,ffff8000296d7258,ffff8000296d7280) at pf_get_transaddr+0x27b sys/net/pf_lb.c:711 pf_test_rule(ffff8000296d7398,ffff8000296d7490,ffff8000296d74a0,ffff8000296d7480,ffff8000296d7470,3,a1c166364f83c54a) at pf_test_rule+0x4a0 sys/net/pf.c:3891 pf_test(18,1,ffff800000ba0000,ffff8000296d7678) at pf_test+0x1e30 sys/net/pf.c:7064 ip6_input_if(ffff8000296d7678,ffff8000296d7684,29,0,ffff800000ba0000) at ip6_input_if+0x2db sys/netinet6/ip6_input.c:318 ipv6_input(ffff800000ba0000,fffffd8062484000) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 ether_input(ffff800000ba0000,fffffd8062484000) at ether_input+0x584 tun_dev_write(5d01,ffff8000296d79e8,ffff800023c9e000,2) at tun_dev_write+0x204 sys/net/if_tun.c:874 spec_write(ffff8000296d7840) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8065a8d550,ffff8000296d79e8,11,fffffd807f7d76c0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd806eef5008,ffff8000296d79e8,0) at vn_write+0x151 sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000296ba2a0,c8,ffff8000296d79e8,0,ffff8000296d7ad0) at dofilewritev+0x1a3 sys/kern/sys_generic.c:380 sys_write(ffff8000296ba2a0,ffff8000296d7a80,ffff8000296d7ad0) at sys_write+0x83 sys/kern/sys_generic.c:300 syscall(ffff8000296d7b50) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000296d7b50) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4e5a39cf870, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5