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 0x500000004 r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0 r11 0 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff819c5e3b done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80002f3f8f58 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor.3) tid=244335 pid=3863 tcnt=2 stat=onproc flags process=8000010 proc=4000000 runpri=32, usrpri=85, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a6b3c58,0xffff80002a6b22c8 process=0xffff8000ffff4448 user=0xffff80002f3f4000, vmspace=0xfffffd80691512c0 estcpu=35, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 30805 142330 11240 0 2 0x8000000 syz-executor.1 30805 447811 11240 0 3 0xc000080 fsleep syz-executor.1 841 327758 36879 0 2 0x8000000 syz-executor.2 841 470591 36879 0 3 0xc000080 fsleep syz-executor.2 841 64417 36879 0 3 0xc000080 fsleep syz-executor.2 52850 363406 41886 0 2 0x8000000 syz-executor.0 52850 280707 41886 0 3 0xc000080 fsleep syz-executor.0 50705 445617 34169 0 2 0x8000000 syz-executor.6 50705 167111 34169 0 3 0xc000080 fsleep syz-executor.6 3863 74549 78805 60928 2 0x8000010 syz-executor.3 * 3863 244335 78805 60928 7 0xc000010 syz-executor.3 91741 413373 97711 0 3 0x8000080 nanoslp syz-executor.5 91741 9013 97711 0 3 0xc000080 netcon syz-executor.5 91741 41879 97711 0 3 0xc000080 fsleep syz-executor.5 44870 246226 0 0 3 0x14200 acct acct 97711 18007 97655 0 3 0x8000082 nanoslp syz-executor.5 78805 54986 97655 0 3 0x8000082 nanoslp syz-executor.3 61398 66781 97655 0 3 0x8000082 nanoslp syz-executor.4 11240 174434 97655 0 3 0x8000082 nanoslp syz-executor.1 36879 350904 97655 0 3 0x8000082 nanoslp syz-executor.2 34169 22657 97655 0 3 0x8000082 nanoslp syz-executor.6 95668 34764 97655 0 3 0x8000082 nanoslp syz-executor.7 41886 365563 97655 0 3 0x8000082 nanoslp syz-executor.0 10720 183706 0 0 3 0x14200 bored sosplice 97655 71071 25796 0 3 0x1a000082 wait syz-fuzzer 97655 15547 25796 0 3 0x1e000082 nanoslp syz-fuzzer 97655 65281 25796 0 3 0x1e000082 wait syz-fuzzer 97655 349749 25796 0 3 0x1e000082 wait syz-fuzzer 97655 339107 25796 0 3 0x1e000082 thrsleep syz-fuzzer 97655 136818 25796 0 3 0x1e000082 thrsleep syz-fuzzer 97655 310381 25796 0 3 0x1e000082 wait syz-fuzzer 97655 213643 25796 0 3 0x1e000082 wait syz-fuzzer 97655 340177 25796 0 3 0x1e000082 thrsleep syz-fuzzer 97655 501257 25796 0 3 0x1e000082 thrsleep syz-fuzzer 97655 37081 25796 0 3 0x1e000082 thrsleep syz-fuzzer 97655 237832 25796 0 3 0x1e000082 kqread syz-fuzzer 97655 456220 25796 0 3 0x1e000082 wait syz-fuzzer 97655 409309 25796 0 3 0x1e000082 wait syz-fuzzer 97655 216402 25796 0 3 0x1e000082 wait syz-fuzzer 25796 506138 53661 0 3 0x810008a sigsusp ksh 53661 263973 97250 0 3 0x1800009a kqread sshd 70661 289167 1 0 3 0x18100083 ttyin getty 97250 236466 1 0 3 0x18000088 kqread sshd 73958 434113 71127 73 3 0x19100090 kqread syslogd 71127 78667 1 0 3 0x18100082 sbwait syslogd 24098 386095 1 0 3 0x18100080 kqread resolvd 56722 77125 41613 77 3 0x18100092 kqread dhcpleased 66496 454796 41613 77 3 0x18100092 kqread dhcpleased 41613 70611 1 0 3 0x18000080 kqread dhcpleased 23502 387011 0 0 3 0x14200 bored smr 20839 447725 0 0 2 0x14200 zerothread 21522 360601 0 0 3 0x14200 aiodoned aiodoned 59483 163027 0 0 3 0x14200 syncer update 36970 15190 0 0 3 0x14200 cleaner cleaner 28082 20766 0 0 3 0x14200 reaper reaper 23160 290021 0 0 3 0x14200 pgdaemon pagedaemon 9707 408675 0 0 3 0x14200 bored viomb 50326 91257 0 0 3 0x40014200 acpi0 acpi0 72674 268074 0 0 3 0x14200 bored softnet3 22253 141350 0 0 3 0x14200 bored softnet2 88232 378550 0 0 3 0x14200 bored softnet1 87446 39710 0 0 3 0x14200 bored softnet0 32914 510459 0 0 3 0x14200 bored systqmp 82782 453538 0 0 3 0x14200 bored systq 6664 431120 0 0 2 0x40014200 softclock 27082 500882 0 0 3 0x40014200 idle0 1 54770 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 10206 6753K 11038K 166960K 22166 0 pcb 18 18K 20K 166960K 782 0 rtable 224 11K 12K 166960K 6292 0 pf 33 9K 10K 166960K 542 0 ifaddr 44 13K 13K 166960K 846 0 ifgroup 58 2K 2K 166960K 1007 0 sysctl 4 1K 2K 166960K 16 0 counters 32 17K 18K 166960K 266 0 ioctlops 0 0K 2K 166960K 485 0 iov 0 0K 28K 166960K 269 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1529 96K 97K 166960K 8339 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 68K 76K 166960K 178 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 471 0 dirhash 12 2K 3K 166960K 123 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 16 57K 109K 166960K 7045 0 sigio 1 0K 0K 166960K 174 0 proc 62 59K 125K 166960K 5909 0 subproc 104 6K 8K 166960K 2604 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 596 0 in_multi 98 7K 7K 166960K 2198 0 ether_multi 1 0K 0K 166960K 40 0 mrt 2 0K 0K 166960K 21 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 3562 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 301 98K 132K 166960K 54209 0 UVM aobj 185 5K 5K 166960K 205 0 pinsyscall 36 72K 105K 166960K 13090 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 288 0 NDP 15 0K 2K 166960K 623 0 temp 76 6812K 14748K 166960K 342459 0 kqueue 12 18K 29K 166960K 629 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 120 779 0 775 1 0 1 1 0 8 0 rtentry 112 2248 0 2150 4 0 4 4 0 8 1 unpcb 144 3867 0 3854 6 0 6 6 0 8 5 syncache 336 12 0 12 1 0 1 1 0 8 1 sackhl 24 2 11 2 1 0 1 1 0 8 1 tcpqe 32 14 0 14 1 0 1 1 0 8 1 tcpcb 808 1587 0 1578 8 0 8 8 0 8 7 arp 88 420 0 400 1 0 1 1 0 8 0 ipq 40 16 0 14 1 0 1 1 0 8 0 ipqe 40 200 0 198 1 0 1 1 0 8 0 inpcb 352 6167 0 6155 14 5 9 14 0 8 7 nd6 104 600 0 576 1 0 1 1 0 8 0 pkpcb 40 38 0 38 1 0 1 1 0 8 1 kcovpl 48 200 0 192 1 0 1 1 0 8 0 ppxss 1072 19 0 19 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 8879 0 8416 113 84 29 30 0 8 0 art_table 32 8880 0 8416 4 0 4 4 0 8 0 art_node 16 2238 0 2150 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 468 0 458 1 0 1 1 0 8 0 shmpl 112 202 0 20 6 0 6 6 0 8 0 dirhash 1024 91 0 74 3 0 3 3 0 8 0 dino2pl 256 9823 0 8289 97 0 97 97 0 8 0 ffsino 240 9823 0 8289 91 0 91 91 0 8 0 nchpl 144 18389 0 17801 66 33 33 66 0 8 8 uvmvnodes 80 11397 0 0 233 0 233 233 0 8 0 vnodes 216 11397 0 0 634 0 634 634 0 8 0 namei 1024 81300 0 81300 2 0 2 2 0 8 2 vcpupl 3904 16 0 1 2 0 2 2 0 8 0 vmpool 664 36 0 21 2 0 2 2 0 8 0 kstatmem 264 494 0 468 3 0 3 3 0 8 1 scsiplug 72 9 0 9 1 0 1 1 0 8 1 scxspl 216 140258 0 140258 8 0 8 8 1 8 8 plimitpl 152 1155 0 1137 1 0 1 1 0 8 0 sigapl 424 7005 0 6958 9 0 9 9 0 8 3 futexpl 64 88153 0 88147 1 0 1 1 0 8 0 knotepl 120 29155 0 29073 16 3 13 16 0 8 6 kqueuepl 184 1256 0 1248 1 0 1 1 0 8 0 pipepl 288 1731 0 1702 7 0 7 7 0 8 4 fdescpl 432 6943 0 6916 5 0 5 5 0 8 1 filepl 120 42881 0 42625 14 0 14 14 0 8 5 lockfpl 104 1565 0 1563 1 0 1 1 0 8 0 lockfspl 48 652 0 650 1 0 1 1 0 8 0 sessionpl 144 208 0 192 1 0 1 1 0 8 0 pgrppl 48 400 0 384 1 0 1 1 0 8 0 ucredpl 104 6380 0 6365 1 0 1 1 0 8 0 zombiepl 144 6960 0 6958 1 0 1 1 0 8 0 processpl 1072 7005 0 6958 6 0 6 6 0 8 2 procpl 656 12344 0 12275 8 0 8 8 0 8 2 sosppl 168 54 0 54 1 0 1 1 0 8 1 sockpl 504 10941 0 10913 64 53 11 25 0 8 7 mcl64k 65536 70 0 70 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 7 0 7 1 0 1 1 0 8 1 mcl9k 9216 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 77 0 77 1 0 1 1 0 8 1 mcl4k 4096 17 0 17 1 0 1 1 0 8 1 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 61043 0 60941 47 25 22 38 0 8 7 mtagpl 96 175 0 165 1 0 1 1 0 8 0 mbufpl 256 169632 0 169469 115 93 22 62 0 8 7 bufpl 280 21740 0 10346 815 0 815 815 0 8 0 anonpl 24 857623 0 851099 87 0 87 87 0 188 26 amapchunkpl 152 173366 0 172697 47 0 47 47 0 158 19 amappl16 200 16705 0 16541 59 38 21 23 0 8 8 amappl15 192 220 0 219 1 0 1 1 0 8 0 amappl14 184 767 0 753 2 0 2 2 0 8 1 amappl13 176 21 0 21 1 0 1 1 0 8 1 amappl12 168 10295 0 10267 3 0 3 3 0 8 1 amappl11 160 49 0 39 1 0 1 1 0 8 0 amappl10 152 243 0 232 1 0 1 1 0 8 0 amappl9 144 129 0 129 1 0 1 1 0 8 1 amappl8 136 448 0 416 2 0 2 2 0 8 0 amappl7 128 62 0 48 1 0 1 1 0 8 0 amappl6 120 2695 0 2681 2 0 2 2 0 8 1 amappl5 112 890 0 878 1 0 1 1 0 8 0 amappl4 104 1788 0 1756 2 0 2 2 0 8 0 amappl3 96 31809 0 31723 3 0 3 3 0 8 0 amappl2 88 7953 0 7881 4 0 4 4 0 8 2 amappl1 80 42218 0 41728 22 3 19 22 0 8 7 amappl 88 52071 0 51875 6 0 6 6 0 92 1 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 204 0 20 4 0 4 4 0 8 0 uaddrrnd 24 6979 0 6937 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6979 0 6937 1 0 1 1 0 8 0 vmmpekpl 168 53711 0 53641 4 0 4 4 0 8 0 vmmpepl 168 478512 0 476626 114 0 114 114 0 357 22 vmsppl 344 6978 0 6937 5 0 5 5 0 8 0 rwobjpl 24 119053 0 106358 79 0 79 79 0 8 1 pdppl 4096 13964 0 13889 608 527 81 93 0 8 6 pvpl 32 2592577 0 2579364 401 46 355 401 0 265 218 pmappl 216 6978 0 6937 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1164 0 782 12 0 12 12 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