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 done_flush() at done_flush+0x38 vm_run(ffff8000263d9bd0) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4462 vmmioctl(a00,c0205602,ffff8000263d9bd0,1,ffff800029bbca90) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:656 VOP_IOCTL(fffffd806e90a3c8,c0205602,ffff8000263d9bd0,1,fffffd807f7d74e0,ffff800029bbca90) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805f3c2360,c0205602,ffff8000263d9bd0,ffff800029bbca90) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800029bbca90,ffff8000263d9ce8,ffff8000263d9d40) at sys_ioctl+0x49e syscall(ffff8000263d9db0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9bc05e7f80, count: -8 ddb> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800027f4acd8 rbp 0xffff8000263d9930 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0x100000000004 r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0xa96aae51bb22aa97 r11 0x9d07aeebfe84f873 r12 0xffff800027f4aa10 r13 0xffffffff82977350 dt_prov_static r14 0xffff800027f4a6c0 r15 0xffff8000263d9bd0 rip 0xffffffff81d2d5e0 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff8000263d9796 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor.5) pid=6330 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800029bbc2b0,0xffff800029bbd280 process=0xffff80002169cfc8 user=0xffff8000263d4000, vmspace=0xfffffd8062eb3880 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 87233 158855 81197 0 2 0 syz-executor.7 14263 387296 24685 0 2 0 syz-executor.3 14263 197023 24685 0 3 0x4000080 fsleep syz-executor.3 46306 56511 35581 60929 2 0x10 syz-executor.4 46306 466283 35581 60929 3 0x4000090 fsleep syz-executor.4 60941 200187 45745 0 2 0 syz-executor.2 60941 83026 45745 0 3 0x4000080 fsleep syz-executor.2 92371 484470 3165 0 2 0 syz-executor.5 *92371 6330 3165 0 7 0x4000000 syz-executor.5 84973 90716 1892 0 2 0x2 syz-executor.0 56330 166119 1892 0 3 0x82 nanoslp syz-executor.6 42584 192590 1892 0 2 0x2 syz-executor.1 81197 256182 1892 0 3 0x82 nanoslp syz-executor.7 3165 184991 1892 0 3 0x82 nanoslp syz-executor.5 24685 312868 1892 0 3 0x82 nanoslp syz-executor.3 45745 2440 1892 0 3 0x82 nanoslp syz-executor.2 35581 50679 1892 0 3 0x82 nanoslp syz-executor.4 7451 57406 1 0 3 0x100083 ttyopn getty 45338 106763 0 0 3 0x14280 nfsidl nfsio 20555 113092 0 0 3 0x14280 nfsidl nfsio 10788 345902 0 0 3 0x14280 nfsidl nfsio 76205 94685 0 0 3 0x14280 nfsidl nfsio 87860 227483 0 0 3 0x14280 nfsidl nfsio 73086 363378 0 0 3 0x14280 nfsidl nfsio 82628 36461 0 0 3 0x14280 nfsidl nfsio 62249 507107 0 0 3 0x14280 nfsidl nfsio 95318 166182 0 0 3 0x14280 nfsidl nfsio 69259 100990 0 0 3 0x14280 nfsidl nfsio 70033 434792 0 0 3 0x14280 nfsidl nfsio 84338 341385 0 0 3 0x14280 nfsidl nfsio 39950 400699 0 0 3 0x14280 nfsidl nfsio 47100 235814 0 0 3 0x14280 nfsidl nfsio 50461 11204 0 0 3 0x14200 bored sosplice 65338 283611 0 0 3 0x14280 nfsidl nfsio 6211 186543 0 0 3 0x14280 nfsidl nfsio 26260 212640 0 0 3 0x14280 nfsidl nfsio 38407 75420 0 0 3 0x14280 nfsidl nfsio 34954 310566 0 0 3 0x14280 nfsidl nfsio 63391 282987 0 0 3 0x14280 nfsidl nfsio 1892 353148 34998 0 3 0x82 thrsleep syz-fuzzer 1892 288956 34998 0 3 0x4000082 nanoslp syz-fuzzer 1892 149100 34998 0 3 0x4000082 thrsleep syz-fuzzer 1892 390557 34998 0 3 0x4000082 thrsleep syz-fuzzer 1892 512777 34998 0 3 0x4000082 thrsleep syz-fuzzer 1892 99960 34998 0 3 0x4000082 thrsleep syz-fuzzer 1892 433740 34998 0 3 0x4000082 thrsleep syz-fuzzer 1892 260455 34998 0 3 0x4000082 kqread syz-fuzzer 1892 492444 34998 0 3 0x4000082 thrsleep syz-fuzzer 34998 491961 35255 0 3 0x10008a sigsusp ksh 35255 397427 80253 0 3 0x9a kqread sshd 80253 59953 1 0 3 0x88 kqread sshd 24552 172587 29691 73 3 0x1100090 kqread syslogd 29691 260385 1 0 3 0x100082 netio syslogd 62799 153320 1 0 3 0x100080 kqread resolvd 72365 486134 59657 77 3 0x100092 kqread dhcpleased 31091 323947 59657 77 3 0x100092 kqread dhcpleased 59657 349806 1 0 3 0x80 kqread dhcpleased 34558 25202 0 0 3 0x14200 bored smr 80589 236912 0 0 2 0x14200 zerothread 10840 481619 0 0 3 0x14200 aiodoned aiodoned 93261 352767 0 0 3 0x14200 syncer update 10791 117271 0 0 3 0x14200 cleaner cleaner 77375 522235 0 0 3 0x14200 reaper reaper 42871 436242 0 0 3 0x14200 pgdaemon pagedaemon 15667 440693 0 0 3 0x14200 bored viomb 47447 320765 0 0 3 0x40014200 acpi0 acpi0 45890 196403 0 0 3 0x14200 bored softnet 57292 383464 0 0 3 0x14200 bored softnet 63367 288245 0 0 3 0x14200 bored softnet 29332 204426 0 0 3 0x14200 bored softnet 66483 287041 0 0 3 0x14200 bored systqmp 5997 284281 0 0 3 0x14200 bored systq 32750 93955 0 0 3 0x40014200 bored softclock 92450 266549 0 0 3 0x40014200 idle0 1 521575 0 0 3 0x80082 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 10214 6441K 7101K 78643K 69989 0 pcb 13 20K 24K 78643K 6141 0 rtable 218 22K 25K 78643K 10368 0 ifaddr 118 32K 35K 78643K 4693 0 sysctl 3 1K 5K 78643K 117 0 counters 28 17K 17K 78643K 475 0 ioctlops 0 0K 4K 78643K 10681 0 iov 0 0K 32K 78643K 4343 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1511 94K 95K 78643K 23559 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 359 0 VM map 2 0K 0K 78643K 2 0 sem 24 28K 56K 78643K 417 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 77K 78643K 38145 0 sigio 0 0K 0K 78643K 593 0 proc 73 60K 83K 78643K 8322 0 subproc 104 6K 8K 78643K 3146 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2128 0 in_multi 66 4K 7K 78643K 3211 0 ether_multi 1 0K 0K 78643K 202 0 mrt 1 0K 0K 78643K 148 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 265 1182K 1182K 78643K 265 0 exec 0 0K 2K 78643K 11712 0 pfkey data 0 0K 1K 78643K 148 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 754 2506K 3083K 78643K 202951 0 UVM aobj 131 8K 8K 78643K 135 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1198 0 NDP 14 0K 2K 78643K 951 0 temp 6302 17056K 33436K 78643K 1468284 0 kqueue 12 18K 28K 78643K 2704 0 SYN cache 2 996K 996K 78643K 5 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 3138 0 3135 43 42 1 3 0 8 0 rtentry 112 2964 0 2895 6 3 3 4 0 8 0 unpcb 136 23708 0 23691 250 249 1 9 0 8 0 syncache 296 144 0 144 44 43 1 1 0 8 1 tcpcb 736 12094 0 12073 405 400 5 21 0 8 2 arp 88 483 0 472 1 0 1 1 0 8 0 ipq 40 20 0 20 8 8 0 1 0 8 0 ipqe 40 57 0 57 8 8 0 1 0 8 0 inpcb 312 32832 0 32815 464 457 7 17 0 8 5 ip6q 72 3 0 3 2 2 0 1 0 8 0 ip6af 40 6 0 6 2 2 0 1 0 8 0 nd6 48 769 0 754 1 0 1 1 0 8 0 pkpcb 40 222 0 222 21 21 0 1 0 8 0 kcovpl 48 239 0 231 1 0 1 1 0 8 0 ppxss 1152 97 0 97 31 30 1 1 0 8 1 pfstscr 40 76 0 60 1 0 1 1 0 8 0 pfosfp 40 6 0 4 1 0 1 1 0 8 0 pfosfpen 112 6 0 0 1 0 1 1 0 8 0 pfrktable 1344 576 0 551 20 17 3 3 0 8 0 pftag 88 21 0 7 1 0 1 1 0 8 0 pfqueue 264 3 0 3 1 1 0 1 0 8 0 pfstitem 24 117 0 91 1 0 1 1 0 8 0 pfstkey 112 161 0 156 1 0 1 1 0 8 0 pfstate 336 82 0 69 2 0 2 2 0 8 0 pfrule 1360 1860 0 1681 34 19 15 15 0 8 0 rttmr 64 35 0 35 11 11 0 1 0 8 0 art_heap8 4096 11 0 10 8 7 1 3 0 8 0 art_heap4 256 12592 0 12263 136 115 21 31 0 8 0 art_table 32 12603 0 12273 9 6 3 4 0 8 0 art_node 16 2949 0 2890 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 5 1 0 1 1 0 8 0 semupl 112 7 0 7 1 1 0 1 0 8 0 semapl 112 395 0 373 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 50827 0 49184 103 0 103 103 0 8 0 ffsino 240 50827 0 49184 97 0 97 97 0 8 0 nchpl 144 113071 0 111435 63 0 63 63 0 8 0 uvmvnodes 80 10718 0 0 219 0 219 219 0 8 0 vnodes 224 10718 0 0 631 0 631 631 0 8 0 namei 1024 412283 0 412282 21 20 1 2 0 8 0 vcpupl 1984 390 0 3 49 0 49 49 0 8 0 vmpool 528 515 0 128 27 1 26 26 0 8 0 pfiaddrpl 120 239 0 167 8 5 3 3 0 8 0 kstatmem 264 922 0 894 3 0 3 3 0 8 0 scsiplug 72 24 0 24 8 8 0 1 0 8 0 scxspl 216 299268 0 299268 87 86 1 8 0 8 1 plimitpl 152 5052 0 5038 1 0 1 1 0 8 0 sigapl 424 38015 0 37951 8 0 8 8 0 8 0 futexpl 64 362608 0 362605 14 13 1 1 0 8 0 knotepl 120 468724 0 468644 225 218 7 14 0 8 4 kqueuepl 184 9947 0 9939 144 143 1 7 0 8 0 pipepl 304 9130 0 9102 222 219 3 10 0 8 0 fdescpl 432 37958 0 37932 8 4 4 4 0 8 0 filepl 120 292664 0 292425 391 381 10 21 0 8 2 lockfpl 104 9989 0 9987 19 18 1 3 0 8 0 lockfspl 48 2417 0 2415 1 0 1 1 0 8 0 sessionpl 144 251 0 235 1 0 1 1 0 8 0 pgrppl 48 391 0 375 1 0 1 1 0 8 0 ucredpl 96 35832 0 35807 1 0 1 1 0 8 0 zombiepl 144 37952 0 37951 7 6 1 1 0 8 0 processpl 1000 38015 0 37951 13 4 9 9 0 8 0 procpl 672 93502 0 93426 38 30 8 10 0 8 0 sosppl 168 340 0 339 27 26 1 1 0 8 0 sockpl 448 59924 0 59878 1068 1055 13 34 0 8 6 mcl64k 65536 1286 0 1286 81 80 1 1 0 8 1 mcl16k 16384 393 0 393 91 90 1 1 0 8 1 mcl12k 12288 1157 0 1157 83 82 1 1 0 8 1 mcl9k 9216 692 0 692 95 94 1 1 0 8 1 mcl8k 8192 1600 0 1600 68 67 1 1 0 8 1 mcl4k 4096 3878 0 3878 47 46 1 1 0 8 1 mcl2k2 2112 282 0 282 90 89 1 1 0 8 1 mcl2k 2048 141607 0 141551 97 89 8 16 0 8 0 mtagpl 96 7633 0 7323 70 58 12 16 0 8 0 mbufpl 256 476143 0 475632 970 927 43 421 0 8 0 bufpl 288 71957 0 64506 766 122 644 766 0 8 0 anonpl 24 7182456 0 7162609 674 528 146 189 0 188 10 amapchunkpl 152 775611 0 774781 2707 2525 182 655 0 158 147 amappl16 200 110906 0 110116 536 491 45 56 0 8 2 amappl15 192 5990 0 5988 3 2 1 1 0 8 0 amappl14 184 5840 0 5837 2 1 1 1 0 8 0 amappl13 176 5736 0 5733 1 0 1 1 0 8 0 amappl12 168 5026 0 5020 2 1 1 1 0 8 0 amappl11 160 3520 0 3501 1 0 1 1 0 8 0 amappl10 152 6571 0 6563 1 0 1 1 0 8 0 amappl9 144 4464 0 4460 1 0 1 1 0 8 0 amappl8 136 6934 0 6826 4 0 4 4 0 8 0 amappl7 128 3466 0 3454 1 0 1 1 0 8 0 amappl6 120 5672 0 5652 2 1 1 2 0 8 0 amappl5 112 34117 0 34101 1 0 1 1 0 8 0 amappl4 104 12594 0 12561 2 0 2 2 0 8 0 amappl3 96 110579 0 110522 2 0 2 2 0 8 0 amappl2 88 47660 0 47571 6 3 3 3 0 8 0 amappl1 80 877894 0 877286 33 18 15 19 0 8 0 amappl 88 198066 0 197736 12 3 9 9 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 72 134 0 4 3 0 3 3 0 8 0 uaddrrnd 24 38473 0 38060 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 38473 0 38060 3 0 3 3 0 8 0 vmmpekpl 168 253137 0 253042 5 0 5 5 0 8 0 vmmpepl 168 3743830 0 3740180 698 513 185 197 0 357 9 vmsppl 272 38472 0 38060 31 3 28 28 0 8 0 rwobjpl 24 872170 0 859326 94 14 80 80 0 8 0 pdppl 4096 76952 0 76507 2757 2306 451 453 0 8 6 pvpl 32 14312277 0 14292077 1004 805 199 306 0 265 8 pmappl 216 38472 0 38060 28 4 24 24 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 7252 0 5805 61 17 44 44 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace done_flush() at done_flush+0x38 vm_run(ffff8000263d9bd0) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4462 vmmioctl(a00,c0205602,ffff8000263d9bd0,1,ffff800029bbca90) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:656 VOP_IOCTL(fffffd806e90a3c8,c0205602,ffff8000263d9bd0,1,fffffd807f7d74e0,ffff800029bbca90) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805f3c2360,c0205602,ffff8000263d9bd0,ffff800029bbca90) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800029bbca90,ffff8000263d9ce8,ffff8000263d9d40) at sys_ioctl+0x49e syscall(ffff8000263d9db0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9bc05e7f80, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace done_flush() at done_flush+0x38 vm_run(ffff8000263d9bd0) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4462 vmmioctl(a00,c0205602,ffff8000263d9bd0,1,ffff800029bbca90) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:656 VOP_IOCTL(fffffd806e90a3c8,c0205602,ffff8000263d9bd0,1,fffffd807f7d74e0,ffff800029bbca90) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805f3c2360,c0205602,ffff8000263d9bd0,ffff800029bbca90) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800029bbca90,ffff8000263d9ce8,ffff8000263d9d40) at sys_ioctl+0x49e syscall(ffff8000263d9db0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9bc05e7f80, count: -8