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 0xffff80002a524a60 rbp 0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0x1000000000 r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0 r11 0 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff82a9c08b done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff8000376775c8 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor) tid=255847 pid=46684 tcnt=3 stat=onproc flags process=8000000 proc=4000000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a4a2a38,0xffff80002a4a2cd0 process=0xffff8000327f4cf0 user=0xffff800037672000, vmspace=0xfffffd80623dc170 estcpu=34, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 91637 103951 87802 0 2 0x8000000 syz-executor 91637 325880 87802 0 3 0xc000080 lockf syz-executor 91637 45352 87802 0 2 0xc000000 syz-executor 51683 497543 13124 0 2 0x8000000 syz-executor 51683 216436 13124 0 3 0xc000080 netacc syz-executor 51683 299324 13124 0 3 0xc000080 fsleep syz-executor 42515 102196 11735 0 2 0x8082000 syz-executor 42515 80370 11735 0 3 0xc002000 suspend syz-executor 43398 11177 97284 0 2 0x8000000 syz-executor 43398 98955 97284 0 3 0xc000080 fsleep syz-executor 47683 331189 82953 0 2 0x8000010 syz-executor 47683 350114 82953 0 3 0xc000090 kqread syz-executor 47683 204960 82953 0 2 0xc000010 syz-executor 46684 425454 38530 0 2 0x8000000 syz-executor *46684 255847 38530 0 7 0xc000000 syz-executor 46684 307974 38530 0 3 0xc000080 lockf syz-executor 10455 184992 38082 0 3 0x8000080 nanoslp syz-executor 10455 122441 38082 0 3 0xc000080 lockf syz-executor 10455 134454 38082 0 3 0xc000080 fsleep syz-executor 61957 416691 16867 0 3 0x8000080 nanoslp syz-executor 61957 305129 16867 0 3 0xc000080 fsleep syz-executor 61957 283693 16867 0 3 0xc000080 ttyin syz-executor 16867 266393 61888 0 3 0x8000082 nanoslp syz-executor 97284 305825 61888 0 3 0x8000082 nanoslp syz-executor 82953 477461 61888 0 3 0x8000082 nanoslp syz-executor 38530 204925 61888 0 3 0x8000082 nanoslp syz-executor 87802 474726 61888 0 3 0x8000082 nanoslp syz-executor 13124 78477 61888 0 3 0x8000082 nanoslp syz-executor 11735 291886 61888 0 3 0x8000082 nanoslp syz-executor 38082 348816 61888 0 3 0x8000082 nanoslp syz-executor 25744 199396 0 0 3 0x14280 nfsidl nfsio 52662 407059 0 0 3 0x14280 nfsidl nfsio 50637 296832 0 0 3 0x14280 nfsidl nfsio 17970 375313 0 0 3 0x14280 nfsidl nfsio 2191 362885 0 0 3 0x14280 nfsidl nfsio 97447 38725 0 0 3 0x14280 nfsidl nfsio 20063 277662 0 0 3 0x14280 nfsidl nfsio 475 39906 0 0 3 0x14280 nfsidl nfsio 86118 345327 0 0 3 0x14280 nfsidl nfsio 30510 12037 0 0 3 0x14280 nfsidl nfsio 93880 56628 0 0 3 0x14280 nfsidl nfsio 76621 116389 0 0 3 0x14280 nfsidl nfsio 77156 54920 0 0 3 0x14280 nfsidl nfsio 43782 220387 0 0 3 0x14280 nfsidl nfsio 85209 281957 0 0 3 0x14280 nfsidl nfsio 66453 312440 0 0 3 0x14280 nfsidl nfsio 47805 155321 0 0 3 0x14280 nfsidl nfsio 31021 461093 0 0 3 0x14280 nfsidl nfsio 4759 94135 0 0 3 0x14280 nfsidl nfsio 31783 387777 0 0 3 0x14280 nfsidl nfsio 77512 408525 0 0 3 0x14200 acct acct 63697 2616 0 0 3 0x14200 bored sosplice 61888 425841 84044 0 3 0x8000082 kqread syz-executor 84044 157976 8341 0 3 0x810008a sigsusp ksh 8341 149182 11189 0 3 0x18000098 kqread sshd-session 11189 298753 48005 0 3 0x18000092 kqread sshd-session 55292 68295 1 0 3 0x18100083 ttyin getty 48005 219694 1 0 3 0x18000088 kqread sshd 38573 305703 43940 73 2 0x19100010 syslogd 43940 34133 1 0 3 0x18100082 sbwait syslogd 91942 497030 1 0 3 0x18100080 kqread resolvd 91675 457580 75676 77 3 0x18100092 kqread dhcpleased 24327 484696 75676 77 3 0x18100092 kqread dhcpleased 75676 130776 1 0 3 0x18000080 kqread dhcpleased 71942 203864 0 0 3 0x14200 bored smr 48339 46104 0 0 2 0x14200 zerothread 85070 349327 0 0 3 0x14200 aiodoned aiodoned 58599 226874 0 0 3 0x14200 syncer update 93324 403101 0 0 3 0x14200 cleaner cleaner 41171 219930 0 0 3 0x14200 reaper reaper 50896 489823 0 0 3 0x14200 pgdaemon pagedaemon 89883 387890 0 0 3 0x14200 bored viomb 33024 55698 0 0 3 0x40014200 acpi0 acpi0 15003 402006 0 0 3 0x14200 bored softnet3 45869 205220 0 0 3 0x14200 bored softnet2 15033 283196 0 0 3 0x14200 bored softnet1 9737 280163 0 0 3 0x14200 bored softnet0 14478 469566 0 0 3 0x14200 bored systqmp 61108 111233 0 0 3 0x14200 bored systq 59072 72879 0 0 3 0x40014200 tmoslp softclock 62378 390649 0 0 3 0x40014200 idle0 1 461176 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 10183 10208K 10475K 166960K 12190 0 pcb 17 15K 17K 166960K 114 0 rtable 190 7K 8K 166960K 1148 0 pf 32 13K 21K 166960K 110 0 ifaddr 38 6K 7K 166960K 156 0 ifgroup 50 2K 2K 166960K 181 0 sysctl 3 1K 1K 166960K 3 0 counters 30 17K 18K 166960K 64 0 ioctlops 0 0K 4K 166960K 135 0 iov 0 0K 16K 166960K 116 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1428 90K 90K 166960K 2338 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 20 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 26 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 18 65K 97K 166960K 1056 0 sigio 0 0K 0K 166960K 9 0 proc 58 59K 124K 166960K 1189 0 subproc 104 6K 6K 166960K 416 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 288 0 in_multi 85 6K 7K 166960K 387 0 ether_multi 1 0K 0K 166960K 13 0 mrt 1 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 1020 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 235 76K 102K 166960K 9936 0 UVM aobj 21 2K 2K 166960K 26 0 pinsyscall 39 78K 100K 166960K 2693 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 34 0 NDP 11 0K 2K 166960K 109 0 temp 62 6812K 6935K 166960K 32724 0 kqueue 14 22K 30K 166960K 127 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 120 208 0 204 3 2 1 3 0 8 0 rtentry 112 388 0 303 4 1 3 4 0 8 0 unpcb 144 576 0 559 4 3 1 4 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 429 0 422 20 13 7 14 0 8 6 arp 88 69 0 53 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 4 0 2 1 0 1 1 0 8 0 inpcb 336 1135 0 1121 17 10 7 12 0 8 5 nd6 104 100 0 79 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 32 0 24 1 0 1 1 0 8 0 ppxss 1072 4 0 4 1 1 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pfstkey 128 2 0 2 1 1 0 1 0 8 0 pfstate 344 2 0 2 1 1 0 1 0 8 0 pfrule 1344 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1574 0 1200 30 2 28 29 0 8 1 art_table 32 1577 0 1200 4 0 4 4 0 8 0 art_node 16 387 0 311 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 7 1 0 1 1 0 8 0 semapl 112 24 0 14 1 0 1 1 0 8 0 shmpl 112 23 0 5 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2833 0 1300 97 0 97 97 0 8 0 ffsino 240 2833 0 1300 91 0 91 91 0 8 0 nchpl 144 3869 0 2160 64 0 64 64 0 8 0 uvmvnodes 80 3576 0 0 73 0 73 73 0 8 0 vnodes 216 3576 0 0 199 0 199 199 0 8 0 namei 1024 16081 0 16081 2 1 1 2 0 8 1 vcpupl 3904 4 0 1 1 0 1 1 0 8 0 vmpool 664 7 0 4 1 0 1 1 0 8 0 kstatmem 264 90 0 68 3 0 3 3 0 8 0 scsiplug 72 6 0 6 2 1 1 1 0 8 1 scxspl 216 20794 0 20794 8 7 1 8 1 8 1 plimitpl 152 248 0 231 1 0 1 1 0 8 0 sigapl 424 1307 0 1239 8 0 8 8 0 8 0 futexpl 64 10812 0 10808 1 0 1 1 0 8 0 knotepl 120 23117 0 23066 16 8 8 10 0 8 6 kqueuepl 184 392 0 381 7 6 1 7 0 8 0 pipepl 288 281 0 253 3 0 3 3 0 8 0 fdescpl 432 1269 0 1239 5 1 4 5 0 8 0 filepl 120 8606 0 8337 21 5 16 16 0 8 6 lockfpl 104 456 0 446 2 1 1 2 0 8 0 lockfspl 48 117 0 111 1 0 1 1 0 8 0 sessionpl 144 45 0 37 1 0 1 1 0 8 0 pgrppl 48 80 0 64 1 0 1 1 0 8 0 ucredpl 104 1266 0 1253 1 0 1 1 0 8 0 zombiepl 144 1239 0 1239 1 0 1 1 0 8 1 processpl 1096 1307 0 1239 6 0 6 6 0 8 1 procpl 648 2263 0 2181 8 0 8 8 0 8 0 sosppl 168 6 0 6 1 1 0 1 0 8 0 sockpl 504 1933 0 1898 35 23 12 22 0 8 7 mcl64k 65536 6 0 6 2 1 1 1 0 8 1 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 19 0 19 2 1 1 1 0 8 1 mcl4k 4096 3 0 3 1 1 0 1 0 8 0 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 6970 0 6875 27 12 15 26 0 8 0 mtagpl 96 24 0 18 1 0 1 1 0 8 0 mbufpl 256 15225 0 15025 18 2 16 18 0 8 0 bufpl 280 7333 0 1088 447 0 447 447 0 8 0 anonpl 24 284393 0 281002 100 50 50 78 0 187 25 amapchunkpl 152 33893 0 33382 76 41 35 62 0 158 15 amappl16 200 7407 0 7387 47 38 9 27 0 8 7 amappl15 192 33 0 33 1 1 0 1 0 8 0 amappl14 184 158 0 148 1 0 1 1 0 8 0 amappl13 176 26 0 26 1 1 0 1 0 8 0 amappl12 168 2256 0 2226 3 1 2 3 0 8 0 amappl11 160 53 0 43 1 0 1 1 0 8 0 amappl10 152 12 0 12 1 1 0 1 0 8 0 amappl9 144 114 0 114 1 1 0 1 0 8 0 amappl8 136 43 0 42 1 0 1 1 0 8 0 amappl7 128 154 0 143 1 0 1 1 0 8 0 amappl6 120 401 0 400 1 0 1 1 0 8 0 amappl5 112 226 0 218 1 0 1 1 0 8 0 amappl4 104 359 0 344 1 0 1 1 0 8 0 amappl3 96 6428 0 6310 4 0 4 4 0 8 1 amappl2 88 940 0 883 2 0 2 2 0 8 0 amappl1 80 11632 0 11097 14 2 12 14 0 8 0 amappl 88 9370 0 9191 5 0 5 5 0 92 0 dma65536 65536 2 0 2 2 1 1 1 0 8 1 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 7 0 7 1 1 0 1 0 8 0 dma128 128 254 0 254 2 1 1 1 0 8 1 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 8 0 8 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 25 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1276 0 1243 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1276 0 1243 1 0 1 1 0 8 0 vmmpekpl 168 11576 0 11520 3 0 3 3 0 8 0 vmmpepl 168 87114 0 85312 110 20 90 100 0 357 11 vmsppl 344 1275 0 1243 5 1 4 4 0 8 1 rwobjpl 24 32498 0 28040 28 1 27 27 0 8 0 pdppl 4096 2558 0 2489 144 73 71 82 0 8 2 pvpl 32 698676 0 688396 486 261 225 355 0 265 136 pmappl 216 1275 0 1243 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 502 0 144 12 1 11 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