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 0xffff800035e2f630 rbp 0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xfffffffffffffffe r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0 r11 0 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff8121f3ed done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff800035e237a6 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor.5) tid=86495 pid=90332 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=81, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a69f7e8,0xffff80002a6b1558 process=0xffff8000ffff10e0 user=0xffff800035e1e000, vmspace=0xfffffd80586b6440 estcpu=31, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 16195 162930 84785 0 2 0 syz-executor.3 16195 441413 84785 0 3 0x4000080 fsleep syz-executor.3 17640 146646 70523 0 2 0 syz-executor.7 17640 115718 70523 0 3 0x4000080 piperd syz-executor.7 90332 469170 5967 0 2 0 syz-executor.5 *90332 86495 5967 0 7 0x4000000 syz-executor.5 2946 174806 50775 0 2 0 syz-executor.4 2946 332107 50775 0 3 0x4000080 fsleep syz-executor.4 79444 220571 13596 0 2 0 syz-executor.2 79444 395422 13596 0 3 0x4000080 fsleep syz-executor.2 84815 438931 15888 0 2 0 syz-executor.6 84815 71700 15888 0 3 0x4000080 fifor syz-executor.6 84815 161664 15888 0 3 0x4000080 fsleep syz-executor.6 84785 213110 71393 0 3 0x82 nanoslp syz-executor.3 57450 468903 71393 0 3 0x82 nanoslp syz-executor.1 47849 369240 0 0 3 0x14200 bored sosplice 70523 481878 71393 0 3 0x82 nanoslp syz-executor.7 86118 270574 71393 0 2 0x2 syz-executor.0 15888 15261 71393 0 3 0x82 nanoslp syz-executor.6 23951 446800 0 0 3 0x14280 nfsidl nfsio 71185 522310 0 0 3 0x14280 nfsidl nfsio 3625 509026 0 0 3 0x14280 nfsidl nfsio 56550 253886 0 0 3 0x14280 nfsidl nfsio 65730 339760 0 0 3 0x14280 nfsidl nfsio 94676 222897 0 0 3 0x14280 nfsidl nfsio 38078 82788 0 0 3 0x14280 nfsidl nfsio 49806 413728 0 0 3 0x14280 nfsidl nfsio 47354 62875 0 0 3 0x14280 nfsidl nfsio 25884 320822 0 0 3 0x14280 nfsidl nfsio 95995 150863 0 0 3 0x14280 nfsidl nfsio 12525 401990 0 0 3 0x14280 nfsidl nfsio 59561 190929 0 0 3 0x14280 nfsidl nfsio 60110 315651 0 0 3 0x14280 nfsidl nfsio 35801 359564 0 0 3 0x14280 nfsidl nfsio 71181 479029 0 0 3 0x14280 nfsidl nfsio 5337 328523 0 0 3 0x14280 nfsidl nfsio 22690 93038 0 0 3 0x14280 nfsidl nfsio 76629 394750 0 0 3 0x14280 nfsidl nfsio 48123 2777 0 0 3 0x14280 nfsidl nfsio 50775 173697 71393 0 3 0x82 nanoslp syz-executor.4 5967 397329 71393 0 3 0x82 nanoslp syz-executor.5 13596 498924 71393 0 3 0x82 nanoslp syz-executor.2 71393 11218 7417 0 3 0x1a000082 wait syz-fuzzer 71393 58886 7417 0 3 0x1e000082 thrsleep syz-fuzzer 71393 287026 7417 0 3 0x1e000082 thrsleep syz-fuzzer 71393 119330 7417 0 3 0x1e000082 wait syz-fuzzer 71393 399721 7417 0 3 0x1e000082 thrsleep syz-fuzzer 71393 358707 7417 0 3 0x1e000082 wait syz-fuzzer 71393 193942 7417 0 3 0x1e000082 wait syz-fuzzer 71393 207919 7417 0 3 0x1e000082 thrsleep syz-fuzzer 71393 196096 7417 0 3 0x1e000082 wait syz-fuzzer 71393 223249 7417 0 3 0x1e000082 wait syz-fuzzer 71393 523838 7417 0 3 0x1e000082 thrsleep syz-fuzzer 71393 264169 7417 0 3 0x1e000082 wait syz-fuzzer 71393 193257 7417 0 3 0x1e000082 wait syz-fuzzer 71393 219191 7417 0 3 0x1e000082 kqread syz-fuzzer 7417 154923 18429 0 3 0x810008a sigsusp ksh 18429 39164 30213 0 3 0x1800009a kqread sshd 52303 449243 1 0 3 0x18100083 ttyopn getty 30213 281291 1 0 3 0x18000088 kqread sshd 50800 376859 99981 73 3 0x19100090 kqread syslogd 99981 143567 1 0 3 0x18100082 netio syslogd 94125 352607 1 0 3 0x18100080 kqread resolvd 86899 443531 8123 77 3 0x18100092 kqread dhcpleased 87734 106362 8123 77 3 0x18100092 kqread dhcpleased 8123 382530 1 0 3 0x18000080 kqread dhcpleased 54138 46491 0 0 3 0x14200 bored smr 53738 128992 0 0 2 0x14200 zerothread 19894 154511 0 0 3 0x14200 aiodoned aiodoned 22795 257185 0 0 3 0x14200 syncer update 14279 58394 0 0 3 0x14200 cleaner cleaner 20732 131265 0 0 3 0x14200 reaper reaper 79772 180045 0 0 3 0x14200 pgdaemon pagedaemon 11189 272790 0 0 3 0x14200 bored viomb 12724 331070 0 0 3 0x40014200 acpi0 acpi0 97818 64011 0 0 3 0x14200 bored softnet3 36964 416449 0 0 3 0x14200 bored softnet2 75995 161198 0 0 3 0x14200 bored softnet1 34816 130737 0 0 3 0x14200 bored softnet0 84260 485462 0 0 3 0x14200 bored systqmp 79562 48276 0 0 3 0x14200 bored systq 74002 194117 0 0 3 0x40014200 tmoslp softclock 97890 4259 0 0 3 0x40014200 idle0 1 184285 0 0 3 0x8000082 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 10169 6478K 7672K 166960K 46707 0 pcb 15 14K 16K 166960K 472 0 rtable 193 6K 7K 166960K 695 0 pf 25 8K 9K 166960K 103 0 ifaddr 35 10K 11K 166960K 98 0 ifgroup 42 1K 2K 166960K 174 0 sysctl 2 0K 0K 166960K 2 0 counters 28 17K 17K 166960K 58 0 ioctlops 0 0K 2K 166960K 2121 0 iov 0 0K 16K 166960K 1596 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1558 98K 98K 166960K 8426 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 27 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 1058 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 16 57K 69K 166960K 6607 0 sigio 0 0K 0K 166960K 34 0 proc 58 59K 75K 166960K 760 0 subproc 104 6K 6K 166960K 195 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 178 0 in_multi 77 5K 7K 166960K 194 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 941 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 814 1007K 1012K 166960K 60668 0 UVM aobj 25 2K 2K 166960K 28 0 pinsyscall 22 44K 100K 166960K 1417 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 34 0 NDP 9 0K 2K 166960K 69 0 temp 74 6804K 6884K 166960K 27981 0 kqueue 12 18K 22K 166960K 188 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 120 116 0 112 1 0 1 1 0 8 0 rtentry 112 195 0 107 4 0 4 4 0 8 0 unpcb 144 1304 0 1289 6 0 6 6 0 8 5 syncache 336 16 0 16 1 0 1 1 0 8 1 tcpqe 32 151 0 151 1 0 1 1 0 8 1 tcpcb 808 434 0 420 8 0 8 8 0 8 6 arp 88 32 0 18 1 0 1 1 0 8 0 inpcb 360 1516 0 1499 8 0 8 8 0 8 6 nd6 104 46 0 28 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 1 1 0 8 1 kcovpl 48 15 0 7 1 0 1 1 0 8 0 ppxss 1072 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 772 0 401 29 0 29 29 0 8 5 art_table 32 773 0 401 4 0 4 4 0 8 0 art_node 16 188 0 108 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 1056 0 1046 1 0 1 1 0 8 0 shmpl 112 25 0 3 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 9907 0 8212 107 0 107 107 0 8 0 ffsino 240 9907 0 8212 101 0 101 101 0 8 0 nchpl 144 20038 0 18306 66 0 66 66 0 8 0 uvmvnodes 80 6126 0 0 126 0 126 126 0 8 0 vnodes 216 6126 0 0 341 0 341 341 0 8 0 namei 1024 61188 0 61188 2 0 2 2 0 8 2 vcpupl 2048 514 0 2 65 0 65 65 0 8 0 vmpool 664 514 0 2 43 0 43 43 0 8 0 kstatmem 264 78 0 60 2 0 2 2 0 8 0 scxspl 216 60187 0 60187 8 0 8 8 1 8 8 plimitpl 152 220 0 204 1 0 1 1 0 8 0 sigapl 424 6910 0 6845 8 0 8 8 0 8 0 futexpl 64 69660 0 69656 1 0 1 1 0 8 0 knotepl 120 55315 0 55233 3 0 3 3 0 8 0 kqueuepl 184 927 0 918 4 0 4 4 0 8 3 pipepl 288 467 0 438 5 0 5 5 0 8 2 fdescpl 432 6873 0 6846 4 0 4 4 0 8 0 filepl 120 32236 0 31987 16 0 16 16 0 8 7 lockfpl 104 7796 0 7793 4 0 4 4 0 8 3 lockfspl 48 3874 0 3871 2 0 2 2 0 8 1 sessionpl 144 30 0 14 1 0 1 1 0 8 0 pgrppl 48 121 0 105 1 0 1 1 0 8 0 ucredpl 104 1987 0 1977 1 0 1 1 0 8 0 zombiepl 144 6846 0 6845 1 0 1 1 0 8 0 processpl 1072 6910 0 6845 5 0 5 5 0 8 0 procpl 680 15520 0 15435 9 0 9 9 0 8 1 sosppl 168 11 0 11 1 0 1 1 0 8 1 sockpl 488 2939 0 2903 30 17 13 21 0 8 7 mcl64k 65536 187 0 187 1 0 1 1 0 8 1 mcl16k 16384 79 0 79 1 0 1 1 0 8 1 mcl12k 12288 167 0 167 1 0 1 1 0 8 1 mcl9k 9216 106 0 106 1 0 1 1 0 8 1 mcl8k 8192 1065 0 1065 1 0 1 1 0 8 1 mcl4k 4096 582 0 582 2 0 2 2 0 8 2 mcl2k2 2112 40 0 40 1 0 1 1 0 8 1 mcl2k 2048 78695 0 78575 55 27 28 36 0 8 8 mtagpl 96 4738 0 4207 26 0 26 26 0 8 5 mbufpl 256 169064 0 168422 227 153 74 138 0 8 8 bufpl 280 19163 0 12816 454 0 454 454 0 8 0 anonpl 24 736324 0 721557 117 0 117 117 0 188 18 amapchunkpl 152 191198 0 189995 50 0 50 50 0 158 1 amappl16 200 17444 0 16774 58 14 44 49 0 8 8 amappl15 192 76 0 75 1 0 1 1 0 8 0 amappl14 184 175 0 161 2 0 2 2 0 8 1 amappl13 176 13 0 13 1 0 1 1 0 8 1 amappl12 168 7598 0 7570 2 0 2 2 0 8 0 amappl11 160 50 0 40 1 0 1 1 0 8 0 amappl10 152 53 0 45 1 0 1 1 0 8 0 amappl9 144 173 0 172 1 0 1 1 0 8 0 amappl8 136 178 0 117 3 0 3 3 0 8 0 amappl7 128 97 0 86 1 0 1 1 0 8 0 amappl6 120 429 0 413 2 0 2 2 0 8 1 amappl5 112 311 0 299 1 0 1 1 0 8 0 amappl4 104 604 0 567 2 0 2 2 0 8 0 amappl3 96 38482 0 38401 3 0 3 3 0 8 0 amappl2 88 8250 0 8177 4 0 4 4 0 8 1 amappl1 80 32856 0 32363 22 2 20 22 0 8 8 amappl 88 59727 0 59287 11 0 11 11 0 92 0 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 27 0 3 1 0 1 1 0 8 0 uaddrrnd 24 7387 0 6848 4 0 4 4 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7387 0 6848 4 0 4 4 0 8 0 vmmpekpl 168 36320 0 36227 5 0 5 5 0 8 0 vmmpepl 168 410671 0 407373 175 0 175 175 0 357 27 vmsppl 352 7386 0 6848 50 0 50 50 0 8 0 rwobjpl 24 104119 0 96089 50 0 50 50 0 8 0 pdppl 4096 14780 0 14208 704 128 576 578 0 8 4 pvpl 32 1893823 0 1874816 388 41 347 388 0 265 181 pmappl 216 7386 0 6848 31 0 31 31 0 8 1 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1325 0 308 32 0 32 32 0 8 2 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