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(ffff800027fb3810) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4295 VOP_IOCTL(fffffd8070a929e8,c0205602,ffff800027fb3810,81,fffffd807f7d88a0,ffff8000230f7cf0) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8069afc4b0,c0205602,ffff800027fb3810,ffff8000230f7cf0) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000230f7cf0,ffff800027fb3928,ffff800027fb3980) at sys_ioctl+0x49e syscall(ffff800027fb39f0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafa8363e860, count: -7 ddb> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff8000230fcdd8 rbp 0xffff800027fb35e0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xf29a18176aa6cdcb r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0xee6b9ed4cfefed77 r11 0xe372b1b37629828a r12 0xffff8000230fcb10 r13 0xffffffff827b97a0 dt_prov_static r14 0xffff8000230fc7c0 r15 0xffff800027fb3810 rip 0xffffffff81bb64f0 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff800027fb3446 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor.3) pid=144749 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff80002163e7e0,0xffffffff8291ef08 process=0xffff80002166a3f0 user=0xffff800027fae000, vmspace=0xfffffd8072602de0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 36872 350016 5421 0 2 0 syz-executor.3 *36872 144749 5421 0 7 0x4000000 syz-executor.3 21934 522495 97969 0 2 0 syz-executor.2 21934 471170 97969 0 3 0x4000080 fsleep syz-executor.2 23888 511598 22366 0 2 0 syz-executor.1 23888 318042 22366 0 3 0x4000080 fsleep syz-executor.1 97969 30958 10362 0 3 0x82 nanoslp syz-executor.2 99204 74117 1 0 3 0x100083 ttyin getty 27842 374654 10362 0 3 0x82 nanoslp syz-executor.0 22366 353746 10362 0 3 0x82 nanoslp syz-executor.1 5421 300313 10362 0 3 0x82 nanoslp syz-executor.3 72199 444027 0 0 3 0x14280 nfsidl nfsio 76012 197870 0 0 3 0x14280 nfsidl nfsio 58313 165932 0 0 3 0x14280 nfsidl nfsio 1491 503957 0 0 3 0x14280 nfsidl nfsio 16418 197674 0 0 3 0x14280 nfsidl nfsio 29545 435028 0 0 3 0x14280 nfsidl nfsio 79047 17387 0 0 3 0x14280 nfsidl nfsio 20302 462808 0 0 3 0x14280 nfsidl nfsio 40919 110477 0 0 3 0x14280 nfsidl nfsio 8513 430751 0 0 3 0x14280 nfsidl nfsio 58130 288226 0 0 3 0x14280 nfsidl nfsio 59441 495160 0 0 3 0x14280 nfsidl nfsio 86542 398674 0 0 3 0x14280 nfsidl nfsio 26506 163199 0 0 3 0x14280 nfsidl nfsio 60015 460342 0 0 3 0x14280 nfsidl nfsio 6102 195500 0 0 3 0x14280 nfsidl nfsio 6979 233443 0 0 3 0x14280 nfsidl nfsio 92827 49868 0 0 3 0x14280 nfsidl nfsio 72700 168358 0 0 3 0x14280 nfsidl nfsio 14207 22922 0 0 3 0x14280 nfsidl nfsio 75629 235491 0 0 3 0x14200 bored sosplice 10362 136074 33584 0 3 0x82 thrsleep syz-fuzzer 10362 386949 33584 0 3 0x4000082 thrsleep syz-fuzzer 10362 258818 33584 0 3 0x4000082 thrsleep syz-fuzzer 10362 382814 33584 0 3 0x4000082 kqread syz-fuzzer 10362 110189 33584 0 3 0x4000082 thrsleep syz-fuzzer 10362 229564 33584 0 3 0x4000082 thrsleep syz-fuzzer 10362 145752 33584 0 3 0x4000082 thrsleep syz-fuzzer 33584 311832 83447 0 3 0x10008a sigsusp ksh 83447 354287 92233 0 3 0x9a poll sshd 92233 80656 1 0 3 0x88 poll sshd 1497 270063 68301 73 3 0x100090 kqread syslogd 68301 445862 1 0 3 0x100082 netio syslogd 28280 297614 1 0 3 0x100080 kqread resolvd 88597 169306 12461 77 3 0x100092 kqread dhcpleased 15046 361554 12461 77 3 0x100092 kqread dhcpleased 12461 221163 1 0 3 0x80 kqread dhcpleased 28369 516775 0 0 3 0x14200 bored smr 22297 211949 0 0 2 0x14200 zerothread 59114 361489 0 0 3 0x14200 aiodoned aiodoned 99563 443165 0 0 3 0x14200 syncer update 62287 153106 0 0 3 0x14200 cleaner cleaner 80696 238410 0 0 3 0x14200 reaper reaper 77849 383994 0 0 3 0x14200 pgdaemon pagedaemon 77568 161419 0 0 3 0x14200 bored viomb 19505 113062 0 0 3 0x40014200 acpi0 acpi0 92222 500447 0 0 3 0x14200 bored softnet 38933 522447 0 0 3 0x14200 bored systqmp 79823 125973 0 0 3 0x14200 bored systq 20279 76765 0 0 3 0x40014200 bored softclock 32290 466994 0 0 3 0x40014200 idle0 1 72470 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 10179 6423K 7439K 78643K 89894 0 pcb 13 20K 24K 78643K 7541 0 rtable 259 41K 42K 78643K 8779 0 ifaddr 112 33K 36K 78643K 2625 0 sysctl 2 0K 0K 78643K 6 0 counters 23 16K 17K 78643K 328 0 ioctlops 0 0K 4K 78643K 10907 0 iov 0 0K 32K 78643K 2865 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1387 87K 88K 78643K 21632 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 186 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 3697 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 45K 78643K 23330 0 sigio 0 0K 0K 78643K 1188 0 proc 59 55K 71K 78643K 3796 0 subproc 52 3K 3K 78643K 1287 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1252 0 in_multi 48 3K 3K 78643K 2299 0 ether_multi 1 0K 0K 78643K 468 0 mrt 1 0K 0K 78643K 51 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 181 811K 811K 78643K 181 0 exec 0 0K 2K 78643K 5750 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 641 1914K 1949K 78643K 280342 0 UVM aobj 131 4K 4K 78643K 136 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 5249 0 NDP 11 0K 0K 78643K 565 0 temp 134 4259K 4729K 78643K 189611 0 kqueue 11 14K 24K 78643K 976 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 1871 0 1868 27 26 1 5 0 8 0 rtentry 112 1558 0 1501 3 1 2 3 0 8 0 unpcb 136 12945 0 12932 117 112 5 9 0 8 4 syncache 296 100 0 100 26 26 0 1 0 8 0 tcpqe 32 122 0 122 10 10 0 1 0 8 0 tcpcb 736 14047 0 14034 367 363 4 20 0 8 2 arp 88 218 0 208 1 0 1 1 0 8 0 ipq 40 48 0 48 5 5 0 1 0 8 0 ipqe 40 381 0 381 5 5 0 1 0 8 0 inpcb 304 36496 0 36489 368 364 4 14 0 8 3 rttmr 72 6 0 6 2 2 0 1 0 8 0 ip6q 72 3 0 3 1 1 0 1 0 8 0 ip6af 40 3 0 3 1 1 0 1 0 8 0 nd6 48 371 0 360 1 0 1 1 0 8 0 pkpcb 40 170 0 170 9 9 0 1 0 8 0 kcovpl 48 99 0 95 1 0 1 1 0 8 0 ppxss 1152 76 0 76 21 20 1 1 0 8 1 pfstscr 40 200 0 200 5 5 0 1 0 8 0 pffrag 232 176 0 176 8 8 0 1 0 482 0 pffrnode 88 174 0 174 8 8 0 1 0 8 0 pffrent 40 4387 0 4387 8 8 0 1 0 8 0 pfosfp 40 19 0 18 2 1 1 1 0 8 0 pfosfpen 112 19 0 16 2 1 1 1 0 8 0 pfrktable 1344 1900 0 1845 20 15 5 5 0 8 0 pftag 88 72 0 57 1 0 1 1 0 8 0 pfqueue 264 6 0 6 2 2 0 1 0 8 0 pfstitem 24 24 0 24 3 3 0 1 0 8 0 pfstkey 112 261 0 261 5 5 0 1 0 8 0 pfstate 320 133 0 133 5 5 0 1 0 8 0 pfsrctr 152 34 0 34 3 3 0 1 0 8 0 pfrule 1360 8105 0 3672 370 0 370 370 0 8 0 art_heap8 4096 3 0 2 3 2 1 2 0 8 0 art_heap4 256 5909 0 5657 60 44 16 22 0 8 0 art_table 32 5912 0 5659 5 2 3 3 0 8 0 art_node 16 1449 0 1401 1 0 1 1 0 8 0 sysvmsgpl 40 50 0 41 1 0 1 1 0 8 0 semapl 112 3695 0 3685 1 0 1 1 0 8 0 shmpl 112 133 0 5 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 30501 0 29011 95 1 94 94 0 8 0 ffsino 240 30501 0 29011 88 0 88 88 0 8 0 nchpl 144 59924 0 58335 61 0 61 61 0 8 0 uvmvnodes 80 6354 0 0 130 0 130 130 0 8 0 vnodes 224 6354 0 0 374 0 374 374 0 8 0 namei 1024 223399 0 223399 9 8 1 2 0 8 1 vcpupl 1984 291 0 0 37 0 37 37 0 8 0 vmpool 528 445 0 154 22 2 20 20 0 8 0 pfiaddrpl 120 1357 0 955 18 5 13 13 0 8 0 scsiplug 72 9 0 9 3 3 0 1 0 8 0 scxspl 216 195571 0 195571 26 25 1 8 0 8 1 plimitpl 152 2516 0 2506 1 0 1 1 0 8 0 sigapl 424 23317 0 23263 10 3 7 7 0 8 0 futexpl 64 254494 0 254492 6 5 1 1 0 8 0 knotepl 112 9798 0 9748 2 0 2 2 0 8 0 kqueuepl 184 4933 0 4922 77 76 1 4 0 8 0 pipepl 304 5003 0 4987 127 120 7 11 0 8 5 fdescpl 432 23254 0 23234 3 0 3 3 0 8 0 filepl 120 175474 0 175323 259 250 9 15 0 8 4 lockfpl 104 6402 0 6400 14 13 1 2 0 8 0 lockfspl 48 1606 0 1604 1 0 1 1 0 8 0 sessionpl 144 118 0 106 1 0 1 1 0 8 0 pgrppl 48 147 0 135 1 0 1 1 0 8 0 ucredpl 96 18068 0 18057 1 0 1 1 0 8 0 zombiepl 144 23263 0 23262 1 0 1 1 0 8 0 processpl 1000 23317 0 23262 13 5 8 8 0 8 0 procpl 672 58310 0 58246 65 58 7 7 0 8 1 sosppl 168 148 0 148 31 31 0 1 0 8 0 sockpl 448 51508 0 51481 859 841 18 40 0 8 14 mcl64k 65536 957 0 957 62 61 1 1 0 8 1 mcl16k 16384 218 0 218 54 54 0 1 0 8 0 mcl12k 12288 655 0 655 64 63 1 1 0 8 1 mcl9k 9216 420 0 420 63 62 1 1 0 8 1 mcl8k 8192 1764 0 1764 54 53 1 1 0 8 1 mcl4k 4096 2841 0 2841 35 34 1 1 0 8 1 mcl2k2 2112 173 0 173 58 58 0 1 0 8 0 mcl2k 2048 128770 0 128725 63 56 7 22 0 8 0 mtagpl 96 18747 0 18294 130 115 15 23 0 8 1 mbufpl 256 457240 0 456164 1557 1476 81 494 0 8 8 bufpl 288 42529 0 36133 459 0 459 459 0 8 0 anonpl 24 6523757 0 6504001 545 412 133 155 0 188 0 amapchunkpl 152 1331960 0 1331271 1918 1880 38 657 0 158 9 amappl16 200 72713 0 71815 370 321 49 60 0 8 0 amappl15 192 1977 0 1974 1 0 1 1 0 8 0 amappl14 184 734 0 727 2 1 1 1 0 8 0 amappl13 176 4808 0 4807 1 0 1 1 0 8 0 amappl12 168 1574 0 1569 1 0 1 1 0 8 0 amappl11 160 5514 0 5502 1 0 1 1 0 8 0 amappl10 152 1602 0 1597 1 0 1 1 0 8 0 amappl9 144 3469 0 3466 1 0 1 1 0 8 0 amappl8 136 6487 0 6400 6 2 4 4 0 8 0 amappl7 128 4722 0 4712 1 0 1 1 0 8 0 amappl6 120 3699 0 3678 1 0 1 1 0 8 0 amappl5 112 17622 0 17606 1 0 1 1 0 8 0 amappl4 104 10955 0 10925 1 0 1 1 0 8 0 amappl3 96 6193 0 6174 1 0 1 1 0 8 0 amappl2 88 6802 0 6735 2 0 2 2 0 8 0 amappl1 80 406840 0 406365 12 1 11 12 0 8 0 amappl 88 277795 0 277479 10 2 8 8 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 72 135 0 5 3 0 3 3 0 8 0 uaddrrnd 24 23699 0 23388 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 23699 0 23388 2 0 2 2 0 8 0 vmmpekpl 168 143034 0 142973 4 1 3 3 0 8 0 vmmpepl 168 2131402 0 2128505 748 594 154 154 0 357 18 vmsppl 272 23698 0 23388 24 3 21 21 0 8 0 rwobjpl 24 498117 0 489743 78 26 52 52 0 8 0 pdppl 4096 47404 0 47067 464 127 337 337 0 8 0 pvpl 32 10855930 0 10835391 740 550 190 239 0 265 0 pmappl 216 23698 0 23388 20 2 18 18 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 4629 0 3125 54 10 44 44 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace done_flush() at done_flush+0x38 vm_run(ffff800027fb3810) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4295 VOP_IOCTL(fffffd8070a929e8,c0205602,ffff800027fb3810,81,fffffd807f7d88a0,ffff8000230f7cf0) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8069afc4b0,c0205602,ffff800027fb3810,ffff8000230f7cf0) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000230f7cf0,ffff800027fb3928,ffff800027fb3980) at sys_ioctl+0x49e syscall(ffff800027fb39f0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafa8363e860, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace done_flush() at done_flush+0x38 vm_run(ffff800027fb3810) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4295 VOP_IOCTL(fffffd8070a929e8,c0205602,ffff800027fb3810,81,fffffd807f7d88a0,ffff8000230f7cf0) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8069afc4b0,c0205602,ffff800027fb3810,ffff8000230f7cf0) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000230f7cf0,ffff800027fb3928,ffff800027fb3980) at sys_ioctl+0x49e syscall(ffff800027fb39f0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafa8363e860, count: -7