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 0xffff8000377ff820 rbp 0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0x700000006 r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0 r11 0 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff826af1bb done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80002db818c8 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor.2) tid=397954 pid=88735 tcnt=2 stat=onproc flags process=8000000 proc=4000000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a688fa0,0xffff80002a68b748 process=0xffff80002a6f4880 user=0xffff80002db7c000, vmspace=0xfffffd80551c5998 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 27737 27323 11026 0 2 0x8000000 syz-executor.0 64586 313696 242 0 2 0x8000000 syz-executor.7 64586 505613 242 0 3 0xc000080 fsleep syz-executor.7 88735 252082 55291 0 2 0x8000000 syz-executor.2 *88735 397954 55291 0 7 0xc000000 syz-executor.2 68163 312486 85247 0 2 0x8000000 syz-executor.6 68163 119244 85247 0 3 0xc000080 sbwait syz-executor.6 11922 501667 51795 0 3 0x8000080 nanoslp syz-executor.5 11922 171398 51795 0 3 0xc000080 ttyin syz-executor.5 11922 346760 51795 0 3 0xc000080 fsleep syz-executor.5 73707 329790 1 0 3 0x18000082 nanoslp getty 49448 309442 53840 60928 2 0x8000490 syz-executor.1 49448 402707 53840 60928 3 0xc000090 kqread syz-executor.1 49448 76458 53840 60928 3 0xc000090 fsleep syz-executor.1 51795 119523 7077 0 2 0x8000482 syz-executor.5 8543 124596 7077 0 2 0x8000482 syz-executor.4 11026 310967 7077 0 3 0x8000082 nanoslp syz-executor.0 242 373933 7077 0 3 0x8000082 nanoslp syz-executor.7 91015 358573 0 0 3 0x14200 acct acct 55291 122743 7077 0 2 0x8000482 syz-executor.2 79082 236901 7077 0 3 0x8000082 nanoslp syz-executor.3 85247 197646 7077 0 3 0x8000082 nanoslp syz-executor.6 53840 157338 7077 0 2 0x8000482 syz-executor.1 64512 385085 0 0 3 0x14200 bored sosplice 7077 102841 90723 0 3 0x1a000082 thrsleep syz-fuzzer 7077 310583 90723 0 3 0x1e000082 nanoslp syz-fuzzer 7077 289326 90723 0 3 0x1e000082 wait syz-fuzzer 7077 99702 90723 0 3 0x1e000082 thrsleep syz-fuzzer 7077 24168 90723 0 3 0x1e000082 wait syz-fuzzer 7077 249945 90723 0 3 0x1e000082 thrsleep syz-fuzzer 7077 365237 90723 0 3 0x1e000082 wait syz-fuzzer 7077 280094 90723 0 3 0x1e000082 wait syz-fuzzer 7077 490259 90723 0 3 0x1e000082 wait syz-fuzzer 7077 29042 90723 0 3 0x1e000082 thrsleep syz-fuzzer 7077 214451 90723 0 3 0x1e000082 thrsleep syz-fuzzer 7077 350408 90723 0 3 0x1e000082 wait syz-fuzzer 7077 69719 90723 0 3 0x1e000082 kqread syz-fuzzer 7077 493752 90723 0 3 0x1e000082 wait syz-fuzzer 7077 306847 90723 0 3 0x1e000082 wait syz-fuzzer 90723 225675 79774 0 3 0x810008a sigsusp ksh 79774 223304 6980 0 3 0x1800009a kqread sshd 6980 267905 1 0 3 0x18000088 kqread sshd 29569 184521 94063 73 3 0x19100090 kqread syslogd 94063 227763 1 0 3 0x18100082 sbwait syslogd 78141 417153 1 0 3 0x18100080 kqread resolvd 13829 311175 3637 77 3 0x18100092 kqread dhcpleased 57032 7597 3637 77 3 0x18100092 kqread dhcpleased 3637 369625 1 0 3 0x18000080 kqread dhcpleased 158 247342 0 0 3 0x14200 bored smr 34159 451755 0 0 2 0x14200 zerothread 70895 239098 0 0 3 0x14200 aiodoned aiodoned 6096 38619 0 0 3 0x14200 syncer update 42605 446656 0 0 3 0x14200 cleaner cleaner 88173 90893 0 0 3 0x14200 reaper reaper 34407 363660 0 0 3 0x14200 pgdaemon pagedaemon 38953 475596 0 0 3 0x14200 bored viomb 37799 400006 0 0 3 0x40014200 acpi0 acpi0 43747 390492 0 0 3 0x14200 bored softnet3 989 137942 0 0 3 0x14200 bored softnet2 21400 216407 0 0 3 0x14200 bored softnet1 94278 22826 0 0 3 0x14200 bored softnet0 38883 49449 0 0 3 0x14200 bored systqmp 86930 380449 0 0 3 0x14200 bored systq 8254 66628 0 0 2 0x40014200 softclock 58296 458647 0 0 3 0x40014200 idle0 1 294540 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 10213 6820K 10964K 166960K 29348 0 pcb 17 17K 22K 166960K 2011 0 rtable 170 9K 11K 166960K 7734 0 pf 31 9K 10K 166960K 791 0 ifaddr 38 14K 15K 166960K 1069 0 ifgroup 58 2K 2K 166960K 1422 0 sysctl 4 1K 2K 166960K 28 0 counters 30 17K 17K 166960K 367 0 ioctlops 0 0K 2K 166960K 732 0 iov 1 12K 16K 166960K 490 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1533 96K 97K 166960K 11917 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 176K 208K 166960K 271 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 754 0 dirhash 12 2K 3K 166960K 189 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 16 57K 105K 166960K 10760 0 sigio 1 0K 0K 166960K 167 0 proc 58 59K 116K 166960K 7233 0 subproc 104 6K 9K 166960K 3193 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1276 0 in_multi 64 4K 7K 166960K 2690 0 ether_multi 1 0K 0K 166960K 95 0 mrt 1 0K 0K 166960K 27 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 4308 0 pfkey data 0 0K 0K 166960K 11 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 311 142K 167K 166960K 84643 0 UVM aobj 294 11K 11K 166960K 315 0 pinsyscall 36 72K 110K 166960K 17843 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 611 0 NDP 11 0K 2K 166960K 794 0 temp 79 6812K 14737K 166960K 423959 0 kqueue 12 18K 30K 166960K 1142 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 1249 0 1246 2 0 2 2 0 8 1 rtentry 112 2763 0 2690 4 1 3 4 0 8 0 unpcb 144 7116 0 7103 9 3 6 6 0 8 5 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpqe 32 30 0 30 2 1 1 1 0 8 1 tcpcb 808 2894 0 2887 15 7 8 8 0 8 7 arp 88 536 0 519 1 0 1 1 0 8 0 ipq 40 34 0 34 1 0 1 1 0 8 1 ipqe 40 444 0 444 1 0 1 1 0 8 1 inpcb 352 11578 0 11565 40 31 9 18 0 8 7 nd6 104 721 0 705 1 0 1 1 0 8 0 pkpcb 40 71 0 71 2 1 1 1 0 8 1 kcovpl 48 245 0 237 1 0 1 1 0 8 0 ppxss 1072 48 0 48 2 1 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 10805 0 10512 144 118 26 31 0 8 7 art_table 32 10806 0 10512 4 0 4 4 0 8 1 art_node 16 2742 0 2677 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 7 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 685 0 675 1 0 1 1 0 8 0 shmpl 112 312 0 21 9 0 9 9 0 8 0 dirhash 1024 135 0 118 3 0 3 3 0 8 0 dino2pl 256 15496 0 13947 97 0 97 97 0 8 0 ffsino 240 15496 0 13947 92 0 92 92 0 8 0 nchpl 144 29163 0 28567 66 40 26 66 0 8 0 uvmvnodes 80 11201 0 0 229 0 229 229 0 8 0 vnodes 216 11201 0 0 623 0 623 623 0 8 0 namei 1024 120900 0 120900 4 2 2 3 0 8 2 vcpupl 3904 45 0 3 6 0 6 6 0 8 0 vmpool 664 87 0 45 4 0 4 4 0 8 0 kstatmem 264 696 0 674 2 0 2 2 0 8 0 scsiplug 72 12 0 12 2 1 1 1 0 8 1 scxspl 216 160749 0 160749 9 7 2 8 1 8 2 plimitpl 152 1768 0 1750 1 0 1 1 0 8 0 sigapl 424 10634 0 10587 8 0 8 8 0 8 1 futexpl 64 154408 0 154405 1 0 1 1 0 8 0 knotepl 120 33037 0 32954 21 10 11 18 0 8 6 kqueuepl 184 2818 0 2808 4 0 4 4 0 8 3 pipepl 288 1947 0 1919 7 0 7 7 0 8 4 fdescpl 432 10586 0 10559 6 1 5 5 0 8 1 filepl 120 70496 0 70241 20 3 17 18 0 8 8 lockfpl 104 2758 0 2755 2 0 2 2 0 8 1 lockfspl 48 1108 0 1105 1 0 1 1 0 8 0 sessionpl 144 259 0 244 1 0 1 1 0 8 0 pgrppl 48 392 0 377 1 0 1 1 0 8 0 ucredpl 104 10835 0 10823 1 0 1 1 0 8 0 zombiepl 144 10589 0 10587 1 0 1 1 0 8 0 processpl 1072 10634 0 10587 5 0 5 5 0 8 0 procpl 656 19884 0 19816 10 1 9 9 0 8 2 sosppl 168 87 0 87 2 1 1 1 0 8 1 sockpl 504 20163 0 20137 141 130 11 35 0 8 7 mcl64k 65536 48 0 47 2 1 1 1 0 8 0 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 8 0 8 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 236 0 236 2 1 1 1 0 8 1 mcl4k 4096 16 0 16 2 1 1 1 0 8 1 mcl2k2 2112 3 0 3 1 0 1 1 0 8 1 mcl2k 2048 93817 0 93707 56 35 21 37 0 8 5 mtagpl 96 412 0 389 2 0 2 2 0 8 1 mbufpl 256 315235 0 315003 194 168 26 107 0 8 8 bufpl 280 25452 0 14252 801 0 801 801 0 8 0 anonpl 24 1142902 0 1132136 135 40 95 95 0 188 5 amapchunkpl 152 268330 0 267656 68 20 48 48 0 158 18 amappl16 200 23662 0 23233 136 101 35 35 0 8 4 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 840 0 829 2 1 1 2 0 8 0 amappl13 176 8 0 8 2 1 1 1 0 8 1 amappl12 168 14663 0 14634 3 0 3 3 0 8 0 amappl11 160 53 0 43 1 0 1 1 0 8 0 amappl10 152 342 0 333 1 0 1 1 0 8 0 amappl9 144 112 0 111 1 0 1 1 0 8 0 amappl8 136 658 0 625 2 0 2 2 0 8 0 amappl7 128 67 0 52 1 0 1 1 0 8 0 amappl6 120 3159 0 3146 2 1 1 2 0 8 0 amappl5 112 1045 0 1033 1 0 1 1 0 8 0 amappl4 104 2132 0 2098 2 0 2 2 0 8 0 amappl3 96 50222 0 50140 3 0 3 3 0 8 0 amappl2 88 11832 0 11755 4 1 3 4 0 8 0 amappl1 80 56258 0 55769 24 10 14 22 0 8 1 amappl 88 81899 0 81705 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 72 314 0 21 6 0 6 6 0 8 0 uaddrrnd 24 10673 0 10604 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10673 0 10604 1 0 1 1 0 8 0 vmmpekpl 168 76864 0 76799 4 0 4 4 0 8 0 vmmpepl 168 695433 0 693276 130 21 109 112 0 357 4 vmsppl 344 10672 0 10604 7 0 7 7 0 8 0 rwobjpl 24 162325 0 149445 80 0 80 80 0 8 0 pdppl 4096 21352 0 21250 752 644 108 108 0 8 6 pvpl 32 3652213 0 3634530 458 246 212 367 0 265 38 pmappl 216 10672 0 10604 4 0 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1517 0 1110 14 0 14 14 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