kernel: protection fault trap, code=0 Stopped at done_flush+0x38: movl %eax,%dr6 ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace end trace frame: 0x0, count: -1 ddb> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800030f66e30 rbp 0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0x400000003 r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0 r11 0 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff820425ab done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff8000377cee68 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor.7) tid=42964 pid=95887 tcnt=2 stat=onproc flags process=8000000 proc=4000000 runpri=32, usrpri=78, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002f55b228,0xffff80002f55aa88 process=0xffff8000ffff2e28 user=0xffff8000377ca000, vmspace=0xfffffd807bec3828 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 95887 182272 25053 0 2 0x8000000 syz-executor.7 *95887 42964 25053 0 7 0xc000000 syz-executor.7 76050 121358 83340 0 2 0x8000000 syz-executor.2 76050 30857 83340 0 3 0xc000080 fsleep syz-executor.2 64376 273153 28650 0 2 0x8000000 syz-executor.6 64376 243460 28650 0 3 0xc000080 fsleep syz-executor.6 268 10701 1 0 3 0x8000080 nanoslp syz-executor.5 268 493637 1 0 3 0xc000080 kqread syz-executor.5 268 108186 1 0 3 0xc000080 fsleep syz-executor.5 33868 149764 0 0 3 0x14200 acct acct 83340 269254 57211 0 3 0x8000082 nanoslp syz-executor.2 28650 442217 57211 0 3 0x8000082 nanoslp syz-executor.6 25053 393639 57211 0 3 0x8000082 nanoslp syz-executor.7 57557 90373 1 0 3 0x18100083 ttyin getty 97530 233139 0 0 3 0x14200 bored sosplice 57211 421209 28872 0 3 0x1a000082 wait syz-fuzzer 57211 200906 28872 0 3 0x1e000082 thrsleep syz-fuzzer 57211 25474 28872 0 3 0x1e000082 wait syz-fuzzer 57211 295432 28872 0 3 0x1e000082 thrsleep syz-fuzzer 57211 370303 28872 0 3 0x1e000082 wait syz-fuzzer 57211 183701 28872 0 3 0x1e000082 kqread syz-fuzzer 57211 61282 28872 0 3 0x1e000082 wait syz-fuzzer 57211 30814 28872 0 3 0x1e000082 thrsleep syz-fuzzer 57211 389644 28872 0 3 0x1e000082 thrsleep syz-fuzzer 57211 241554 28872 0 3 0x1e000082 thrsleep syz-fuzzer 57211 482740 28872 0 3 0x1e000082 thrsleep syz-fuzzer 57211 97683 28872 0 3 0x1e000082 thrsleep syz-fuzzer 57211 202488 28872 0 3 0x1e000082 wait syz-fuzzer 57211 47094 28872 0 3 0x1e000082 thrsleep syz-fuzzer 57211 469305 28872 0 3 0x1e000082 wait syz-fuzzer 28872 268711 40252 0 3 0x810008a sigsusp ksh 40252 385782 99579 0 3 0x1800009a kqread sshd 99579 329728 1 0 3 0x18000088 kqread sshd 43258 399572 76993 73 3 0x19100090 kqread syslogd 76993 125449 1 0 3 0x18100082 sbwait syslogd 40915 370185 1 0 3 0x18100080 kqread resolvd 31587 144406 23315 77 3 0x18100092 kqread dhcpleased 64262 249757 23315 77 3 0x18100092 kqread dhcpleased 23315 410015 1 0 3 0x18000080 kqread dhcpleased 17830 28447 0 0 3 0x14200 bored smr 88637 203475 0 0 2 0x14200 zerothread 9065 194378 0 0 3 0x14200 aiodoned aiodoned 93467 90299 0 0 3 0x14200 syncer update 88881 226989 0 0 3 0x14200 cleaner cleaner 71967 57266 0 0 3 0x14200 reaper reaper 3487 53282 0 0 3 0x14200 pgdaemon pagedaemon 46198 72128 0 0 3 0x14200 bored viomb 53913 431554 0 0 3 0x40014200 acpi0 acpi0 14381 339100 0 0 3 0x14200 bored softnet3 52003 253140 0 0 3 0x14200 bored softnet2 80519 260049 0 0 3 0x14200 bored softnet1 24148 356067 0 0 3 0x14200 bored softnet0 1311 6878 0 0 3 0x14200 bored systqmp 52021 14360 0 0 3 0x14200 bored systq 47708 31229 0 0 3 0x40014200 tmoslp softclock 89642 449868 0 0 3 0x40014200 idle0 1 127544 0 0 3 0x8080082 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 10179 6426K 6745K 166960K 21458 0 pcb 17 14K 15K 166960K 751 0 rtable 219 8K 9K 166960K 6279 0 pf 29 8K 10K 166960K 663 0 ifaddr 42 15K 16K 166960K 868 0 ifgroup 50 2K 2K 166960K 1182 0 sysctl 4 1K 2K 166960K 20 0 counters 30 17K 17K 166960K 313 0 ioctlops 0 0K 2K 166960K 567 0 iov 0 0K 28K 166960K 596 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1389 87K 88K 166960K 8401 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 68K 80K 166960K 239 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 623 0 dirhash 12 2K 2K 166960K 165 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 13 45K 77K 166960K 9863 0 sigio 0 0K 0K 166960K 206 0 proc 58 59K 83K 166960K 5847 0 subproc 104 6K 6K 166960K 2332 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1086 0 in_multi 88 6K 7K 166960K 2289 0 ether_multi 2 0K 0K 166960K 55 0 mrt 2 0K 0K 166960K 34 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 3396 0 pfkey data 0 0K 4K 166960K 7 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 440 507K 518K 166960K 79362 0 UVM aobj 373 22K 22K 166960K 403 0 pinsyscall 33 66K 100K 166960K 15524 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 491 0 NDP 11 0K 1K 166960K 662 0 temp 80 6812K 7172K 166960K 236061 0 kqueue 13 20K 30K 166960K 1067 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 997 0 994 1 0 1 1 0 8 0 rtentry 112 2204 0 2107 5 1 4 4 0 8 0 unpcb 144 5735 0 5722 8 6 2 6 0 8 1 syncache 336 106 0 106 3 2 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 68 292 68 2 2 0 1 0 8 0 tcpcb 808 3100 0 3071 18 14 4 15 0 8 1 arp 88 412 0 396 1 0 1 1 0 8 0 ipq 40 16 0 16 1 0 1 1 0 8 1 ipqe 40 120 0 120 1 0 1 1 0 8 1 inpcb 360 9097 0 9064 26 22 4 16 0 8 0 nd6 104 573 0 552 1 0 1 1 0 8 0 pkpcb 40 67 0 67 3 2 1 1 0 8 1 kcovpl 48 178 0 170 1 0 1 1 0 8 0 ppxss 1072 36 0 36 3 2 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 8682 0 8265 114 85 29 30 0 8 1 art_table 32 8683 0 8265 4 0 4 4 0 8 0 art_node 16 2195 0 2107 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 9 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 620 0 610 1 0 1 1 0 8 0 shmpl 112 400 0 30 11 0 11 11 0 8 0 dirhash 1024 119 0 102 3 0 3 3 0 8 0 dino2pl 256 14566 0 13022 98 0 98 98 0 8 0 ffsino 240 14566 0 13022 92 0 92 92 0 8 0 nchpl 144 26647 0 24910 66 0 66 66 0 8 0 uvmvnodes 80 10540 0 0 216 0 216 216 0 8 0 vnodes 216 10540 0 0 586 0 586 586 0 8 0 namei 1024 100624 0 100624 4 3 1 3 0 8 1 vcpupl 2048 57 0 2 7 0 7 7 0 8 0 vmpool 664 73 0 18 5 0 5 5 0 8 0 kstatmem 264 588 0 566 2 0 2 2 0 8 0 scsiplug 72 24 0 24 3 2 1 1 0 8 1 scxspl 216 147682 0 147682 11 9 2 8 1 8 2 plimitpl 152 1134 0 1118 1 0 1 1 0 8 0 sigapl 424 9822 0 9780 8 0 8 8 0 8 1 futexpl 64 128175 0 128172 1 0 1 1 0 8 0 knotepl 120 100415 0 100344 34 23 11 16 0 8 7 kqueuepl 184 2196 0 2187 4 1 3 3 0 8 2 pipepl 288 1516 0 1494 3 0 3 3 0 8 1 fdescpl 432 9739 0 9715 4 0 4 4 0 8 0 filepl 120 54534 0 54307 15 5 10 13 0 8 2 lockfpl 104 2220 0 2218 2 1 1 2 0 8 0 lockfspl 48 902 0 900 1 0 1 1 0 8 0 sessionpl 144 203 0 187 1 0 1 1 0 8 0 pgrppl 48 371 0 355 1 0 1 1 0 8 0 ucredpl 104 9053 0 9038 1 0 1 1 0 8 0 zombiepl 144 9784 0 9780 1 0 1 1 0 8 0 processpl 1072 9822 0 9780 5 0 5 5 0 8 1 procpl 656 18884 0 18823 10 2 8 9 0 8 1 sosppl 168 177 0 177 3 2 1 1 0 8 1 sockpl 504 15968 0 15919 64 55 9 24 0 8 2 mcl64k 65536 224 0 224 3 2 1 1 0 8 1 mcl16k 16384 163 0 163 3 2 1 1 0 8 1 mcl12k 12288 258 0 258 3 2 1 1 0 8 1 mcl9k 9216 62 0 62 3 2 1 1 0 8 1 mcl8k 8192 540 0 540 3 2 1 1 0 8 1 mcl4k 4096 1393 0 1393 3 2 1 1 0 8 1 mcl2k2 2112 116 0 116 3 2 1 1 0 8 1 mcl2k 2048 81348 0 81235 53 33 20 34 0 8 4 mtagpl 96 395 0 394 3 1 2 2 0 8 1 mbufpl 256 230596 0 230393 84 62 22 64 0 8 2 bufpl 280 25500 0 14959 754 0 754 754 0 8 0 anonpl 24 1150283 0 1144189 125 58 67 93 0 188 0 amapchunkpl 152 252389 0 251763 71 33 38 50 0 158 8 amappl16 200 23098 0 22961 76 65 11 20 0 8 2 amappl15 192 13 0 13 2 2 0 1 0 8 0 amappl14 184 689 0 676 2 1 1 2 0 8 0 amappl13 176 16 0 16 2 2 0 1 0 8 0 amappl12 168 12997 0 12967 2 0 2 2 0 8 0 amappl11 160 56 0 46 1 0 1 1 0 8 0 amappl10 152 311 0 298 1 0 1 1 0 8 0 amappl9 144 175 0 173 1 0 1 1 0 8 0 amappl8 136 1295 0 1141 6 0 6 6 0 8 0 amappl7 128 71 0 55 1 0 1 1 0 8 0 amappl6 120 2604 0 2582 2 1 1 2 0 8 0 amappl5 112 962 0 949 1 0 1 1 0 8 0 amappl4 104 2024 0 1987 2 0 2 2 0 8 0 amappl3 96 47674 0 47592 3 0 3 3 0 8 0 amappl2 88 11119 0 11034 6 3 3 4 0 8 0 amappl1 80 54883 0 54391 22 10 12 22 0 8 0 amappl 88 76944 0 76727 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 72 402 0 30 7 0 7 7 0 8 0 uaddrrnd 24 9812 0 9733 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9812 0 9733 1 0 1 1 0 8 0 vmmpekpl 168 67205 0 67147 4 0 4 4 0 8 0 vmmpepl 168 645168 0 643221 141 29 112 114 0 357 11 vmsppl 344 9811 0 9733 8 0 8 8 0 8 0 rwobjpl 24 156529 0 144349 75 0 75 75 0 8 0 pdppl 4096 19630 0 19521 819 700 119 123 0 8 10 pvpl 32 3446303 0 3434391 493 325 168 391 0 265 25 pmappl 216 9811 0 9733 5 0 5 5 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1378 0 964 13 0 13 13 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace end trace frame: 0x0, count: -1 ddb> machine ddbcpu 1 No such command ddb> trace end trace frame: 0x0, count: -1