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(ffff800027f831a0) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4295 VOP_IOCTL(fffffd806edaec88,c0205602,ffff800027f831a0,1,fffffd807f7d83c0,ffff80002310ea80) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8066d53b40,c0205602,ffff800027f831a0,ffff80002310ea80) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002310ea80,ffff800027f832b8,ffff800027f83310) at sys_ioctl+0x49e syscall(ffff800027f83380) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafa693025c0, count: -7 ddb> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800027f86cd8 rbp 0xffff800027f82f70 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0x20ffffffff r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0x5075a65ba360dc06 r11 0x6fd14229c7129ae2 r12 0xffff800027f86a10 r13 0xffffffff8274b7e0 dt_prov_static r14 0xffff800027f866c0 r15 0xffff800027f831a0 rip 0xffffffff81cbf630 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff800027f82dd6 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor.0) pid=237957 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff80002310fa40,0xffffffff828db3e0 process=0xffff800023108808 user=0xffff800027f7e000, vmspace=0xfffffd807c09aab0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 87934 260573 89648 0 2 0 syz-executor.0 *87934 237957 89648 0 7 0x4000000 syz-executor.0 13806 238053 0 0 3 0x14200 acct acct 89648 453736 9680 0 3 0x82 nanoslp syz-executor.0 57974 153670 9680 0 3 0x82 nanoslp syz-executor.1 43618 520110 9680 0 2 0x2 syz-executor.3 62446 141909 9680 0 3 0x82 nanoslp syz-executor.2 67753 4048 0 0 3 0x14280 nfsidl nfsio 9043 169036 0 0 3 0x14280 nfsidl nfsio 75415 66425 0 0 3 0x14280 nfsidl nfsio 63049 442557 0 0 3 0x14280 nfsidl nfsio 79463 37490 0 0 3 0x14280 nfsidl nfsio 78192 241464 0 0 3 0x14280 nfsidl nfsio 86643 261635 0 0 3 0x14280 nfsidl nfsio 39304 310696 0 0 3 0x14280 nfsidl nfsio 92544 195302 0 0 3 0x14280 nfsidl nfsio 85638 187618 0 0 3 0x14280 nfsidl nfsio 18701 213121 0 0 3 0x14280 nfsidl nfsio 41660 101632 0 0 3 0x14280 nfsidl nfsio 848 456268 0 0 3 0x14280 nfsidl nfsio 19262 271382 0 0 3 0x14280 nfsidl nfsio 38093 131825 0 0 3 0x14280 nfsidl nfsio 7315 131377 0 0 3 0x14280 nfsidl nfsio 82292 503653 0 0 3 0x14280 nfsidl nfsio 83365 358004 0 0 3 0x14280 nfsidl nfsio 82486 262272 0 0 3 0x14280 nfsidl nfsio 56092 305545 0 0 3 0x14280 nfsidl nfsio 69298 521927 0 0 3 0x14200 bored sosplice 9680 255656 24515 0 3 0x82 kqread syz-fuzzer 9680 456335 24515 0 3 0x4000082 nanoslp syz-fuzzer 9680 86307 24515 0 3 0x4000082 thrsleep syz-fuzzer 9680 422615 24515 0 3 0x4000082 thrsleep syz-fuzzer 9680 389812 24515 0 3 0x4000082 thrsleep syz-fuzzer 9680 167544 24515 0 3 0x4000082 thrsleep syz-fuzzer 9680 511839 24515 0 3 0x4000082 thrsleep syz-fuzzer 24515 103157 53000 0 3 0x10008a sigsusp ksh 53000 172716 28863 0 3 0x9a poll sshd 28786 1203 1 0 3 0x100083 ttyopn getty 28863 270475 1 0 3 0x88 poll sshd 86826 313444 34444 73 3 0x100090 kqread syslogd 34444 22607 1 0 3 0x100082 netio syslogd 85953 21963 1 0 3 0x100080 kqread resolvd 58540 135652 56156 77 3 0x100092 kqread dhcpleased 61954 98963 56156 77 3 0x100092 kqread dhcpleased 56156 173428 1 0 3 0x80 kqread dhcpleased 74051 516191 0 0 3 0x14200 bored smr 66712 279425 0 0 2 0x14200 zerothread 8652 7814 0 0 3 0x14200 aiodoned aiodoned 39082 339421 0 0 3 0x14200 syncer update 6283 234833 0 0 3 0x14200 cleaner cleaner 91960 509212 0 0 3 0x14200 reaper reaper 28406 129390 0 0 3 0x14200 pgdaemon pagedaemon 19373 85288 0 0 3 0x14200 bored viomb 35419 409843 0 0 3 0x40014200 acpi0 acpi0 76617 130367 0 0 3 0x14200 bored softnet 26132 181763 0 0 3 0x14200 bored systqmp 23207 327479 0 0 3 0x14200 bored systq 19193 303186 0 0 3 0x40014200 bored softclock 29172 213852 0 0 3 0x40014200 idle0 1 357019 0 0 3 0x82 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 10144 6476K 7989K 78643K 21949 0 pcb 13 16K 18K 78643K 1514 0 rtable 157 22K 25K 78643K 4190 0 ifaddr 69 18K 20K 78643K 1589 0 sysctl 2 0K 0K 78643K 2 0 counters 22 16K 17K 78643K 142 0 ioctlops 0 0K 4K 78643K 2075 0 iov 0 0K 28K 78643K 939 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1577 99K 99K 78643K 6183 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 69 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 994 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 7 21K 39K 78643K 7137 0 sigio 0 0K 0K 78643K 44 0 proc 62 55K 71K 78643K 1547 0 subproc 52 3K 3K 78643K 494 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 343 0 in_multi 40 2K 3K 78643K 759 0 ether_multi 1 0K 0K 78643K 138 0 mrt 1 0K 0K 78643K 39 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 169 758K 758K 78643K 169 0 exec 0 0K 2K 78643K 2170 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 378 765K 797K 78643K 86635 0 UVM aobj 131 4K 4K 78643K 137 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 515 0 NDP 7 0K 1K 78643K 213 0 temp 104 4215K 4471K 78643K 50255 0 kqueue 10 14K 23K 78643K 308 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 120 571 0 568 10 8 2 5 0 8 1 rtentry 112 569 0 525 2 0 2 2 0 8 0 unpcb 128 17049 0 17036 96 91 5 13 0 8 4 syncache 296 47 0 47 12 12 0 1 0 8 0 tcpqe 32 54 0 54 5 5 0 1 0 8 0 tcpcb 736 2500 0 2494 103 98 5 15 0 8 3 arp 88 85 0 77 1 0 1 1 0 8 0 ipq 40 13 0 13 4 4 0 1 0 8 0 ipqe 40 319 0 319 4 4 0 1 0 8 0 inpcb 304 7275 0 7268 108 104 4 11 0 8 3 rttmr 72 6 0 6 2 1 1 1 0 8 1 ip6q 72 4 0 4 2 2 0 1 0 8 0 ip6af 40 8 0 8 2 2 0 1 0 8 0 nd6 48 131 0 123 1 0 1 1 0 8 0 pkpcb 40 111 0 111 4 4 0 1 0 8 0 kcovpl 48 38 0 34 1 0 1 1 0 8 0 ppxss 1152 11 0 11 3 2 1 1 0 8 1 pfstscr 40 10 0 8 1 0 1 1 0 8 0 pfosfp 40 70 0 68 1 0 1 1 0 8 0 pfosfpen 112 70 0 64 1 0 1 1 0 8 0 pfrktable 1344 1182 0 1161 10 8 2 3 0 8 0 pftag 88 162 0 154 4 3 1 1 0 8 0 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 112 20 0 16 1 0 1 1 0 8 0 pfstate 320 10 0 8 1 0 1 1 0 8 0 pfrule 1360 802 0 614 18 2 16 16 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2467 0 2294 39 26 13 19 0 8 1 art_table 32 2468 0 2294 3 0 3 3 0 8 0 art_node 16 536 0 499 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semupl 112 8 0 8 1 1 0 1 0 8 0 semapl 112 988 0 978 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 11170 0 9734 91 0 91 91 0 8 0 ffsino 240 11170 0 9734 85 0 85 85 0 8 0 nchpl 144 21797 0 20200 61 0 61 61 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 78948 0 78948 3 2 1 1 0 8 1 vcpupl 1984 180 0 0 23 0 23 23 0 8 0 vmpool 528 225 0 45 14 1 13 13 0 8 1 pfiaddrpl 120 511 0 371 9 4 5 5 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 66894 0 66894 24 20 4 8 0 8 4 plimitpl 152 1283 0 1273 1 0 1 1 0 8 0 sigapl 424 7287 0 7234 12 5 7 7 0 8 0 futexpl 64 74206 0 74206 2 1 1 1 0 8 1 knotepl 112 3754 0 3704 3 1 2 3 0 8 0 kqueuepl 184 2272 0 2266 38 34 4 4 0 8 3 pipepl 304 1649 0 1633 29 27 2 7 0 8 0 fdescpl 432 7246 0 7228 3 0 3 3 0 8 0 filepl 120 66669 0 66523 96 86 10 16 0 8 4 lockfpl 104 1839 0 1837 1 0 1 1 0 8 0 lockfspl 48 612 0 610 1 0 1 1 0 8 0 sessionpl 144 53 0 41 1 0 1 1 0 8 0 pgrppl 48 756 0 744 1 0 1 1 0 8 0 ucredpl 96 8040 0 8030 1 0 1 1 0 8 0 zombiepl 144 7234 0 7232 2 1 1 1 0 8 0 processpl 1000 7287 0 7232 8 0 8 8 0 8 0 procpl 672 18208 0 18146 20 13 7 7 0 8 1 sosppl 168 108 0 108 13 12 1 1 0 8 1 sockpl 448 25016 0 24993 469 456 13 45 0 8 10 mcl64k 65536 324 0 324 15 14 1 1 0 8 1 mcl16k 16384 79 0 79 18 17 1 1 0 8 1 mcl12k 12288 218 0 218 19 18 1 1 0 8 1 mcl9k 9216 109 0 109 20 19 1 1 0 8 1 mcl8k 8192 744 0 734 6 4 2 2 0 8 0 mcl4k 4096 827 0 823 4 3 1 1 0 8 0 mcl2k2 2112 87 0 87 18 18 0 1 0 8 0 mcl2k 2048 91553 0 91169 56 7 49 49 0 8 0 mtagpl 96 1426 0 1277 15 9 6 7 0 8 1 mbufpl 256 210443 0 209274 197 111 86 86 0 8 5 bufpl 288 18765 0 12349 459 0 459 459 0 8 0 anonpl 24 2062763 0 2043379 286 150 136 153 0 188 0 amapchunkpl 152 253437 0 252797 136 96 40 42 0 158 12 amappl16 200 22370 0 21514 133 77 56 59 0 8 8 amappl15 192 2568 0 2562 1 0 1 1 0 8 0 amappl14 184 511 0 509 2 1 1 1 0 8 0 amappl13 176 505 0 502 1 0 1 1 0 8 0 amappl12 168 263 0 256 1 0 1 1 0 8 0 amappl11 160 1691 0 1681 1 0 1 1 0 8 0 amappl10 152 909 0 907 1 0 1 1 0 8 0 amappl9 144 601 0 599 1 0 1 1 0 8 0 amappl8 136 1766 0 1699 3 0 3 3 0 8 0 amappl7 128 971 0 959 1 0 1 1 0 8 0 amappl6 120 483 0 465 1 0 1 1 0 8 0 amappl5 112 5960 0 5949 1 0 1 1 0 8 0 amappl4 104 4690 0 4662 1 0 1 1 0 8 0 amappl3 96 1085 0 1066 1 0 1 1 0 8 0 amappl2 88 1317 0 1265 2 0 2 2 0 8 0 amappl1 80 131067 0 130626 12 1 11 12 0 8 0 amappl 88 85553 0 85338 6 0 6 6 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 7471 0 7273 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7471 0 7273 2 0 2 2 0 8 0 vmmpekpl 168 51284 0 51227 3 0 3 3 0 8 0 vmmpepl 168 671718 0 669289 333 190 143 162 0 357 26 vmsppl 272 7470 0 7273 15 1 14 14 0 8 0 rwobjpl 24 163398 0 155638 53 4 49 49 0 8 0 pdppl 4096 14948 0 14726 281 51 230 230 0 8 8 pvpl 32 3452795 0 3431909 411 214 197 245 0 265 0 pmappl 216 7470 0 7273 12 0 12 12 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1866 0 794 32 1 31 31 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace done_flush() at done_flush+0x38 vm_run(ffff800027f831a0) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4295 VOP_IOCTL(fffffd806edaec88,c0205602,ffff800027f831a0,1,fffffd807f7d83c0,ffff80002310ea80) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8066d53b40,c0205602,ffff800027f831a0,ffff80002310ea80) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002310ea80,ffff800027f832b8,ffff800027f83310) at sys_ioctl+0x49e syscall(ffff800027f83380) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafa693025c0, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace done_flush() at done_flush+0x38 vm_run(ffff800027f831a0) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4295 VOP_IOCTL(fffffd806edaec88,c0205602,ffff800027f831a0,1,fffffd807f7d83c0,ffff80002310ea80) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8066d53b40,c0205602,ffff800027f831a0,ffff80002310ea80) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002310ea80,ffff800027f832b8,ffff800027f83310) at sys_ioctl+0x49e syscall(ffff800027f83380) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafa693025c0, count: -7