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(ffff800027d81cd0) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4295 VOP_IOCTL(fffffd8071a52c88,c0205602,ffff800027d81cd0,1,fffffd807f7d8360,ffff8000216d2d28) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067e8b6a8,c0205602,ffff800027d81cd0,ffff8000216d2d28) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000216d2d28,ffff800027d81de8,ffff800027d81e40) at sys_ioctl+0x49e syscall(ffff800027d81eb0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x692e70a16e0, count: -7 ddb> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff8000ffff4dd8 rbp 0xffff800027d81aa0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0x194000000 r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0xd057fad49b6f69c3 r11 0x568312c7df629f75 r12 0xffff8000ffff4b10 r13 0xffffffff82758fb0 dt_prov_static r14 0xffff8000ffff47c0 r15 0xffff800027d81cd0 rip 0xffffffff81a7e730 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff800027d81906 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor.3) pid=72991 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000216d2fc8,0xffffffff828521d8 process=0xffff80002655cfd8 user=0xffff800027d7c000, vmspace=0xfffffd8067e34880 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 88382 228873 36601 0 2 0 syz-executor.3 *88382 72991 36601 0 7 0x4000000 syz-executor.3 40907 445344 2952 0 2 0 syz-executor.1 40907 289321 2952 0 3 0x4000080 fsleep syz-executor.1 2952 135006 50598 0 3 0x82 nanoslp syz-executor.1 17535 362959 50598 0 2 0x2 syz-executor.0 36601 422166 50598 0 3 0x82 nanoslp syz-executor.3 53187 193525 50598 0 2 0x2 syz-executor.2 24993 341915 1 0 3 0x100083 ttyin getty 9156 145614 0 0 3 0x14200 bored sosplice 35180 206607 0 0 3 0x14280 nfsidl nfsio 20439 54422 0 0 3 0x14280 nfsidl nfsio 28270 243525 0 0 3 0x14280 nfsidl nfsio 37795 145459 0 0 3 0x14280 nfsidl nfsio 7775 62339 0 0 3 0x14280 nfsidl nfsio 48284 306831 0 0 3 0x14280 nfsidl nfsio 66047 372061 0 0 3 0x14280 nfsidl nfsio 22252 339003 0 0 3 0x14280 nfsidl nfsio 55857 323283 0 0 3 0x14280 nfsidl nfsio 19691 392008 0 0 3 0x14280 nfsidl nfsio 10352 246624 0 0 3 0x14280 nfsidl nfsio 63408 241329 0 0 3 0x14280 nfsidl nfsio 17457 78830 0 0 3 0x14280 nfsidl nfsio 30103 45727 0 0 3 0x14280 nfsidl nfsio 88864 385982 0 0 3 0x14280 nfsidl nfsio 52797 164965 0 0 3 0x14280 nfsidl nfsio 99206 491164 0 0 3 0x14280 nfsidl nfsio 72559 37050 0 0 3 0x14280 nfsidl nfsio 57263 417623 0 0 3 0x14280 nfsidl nfsio 26275 436726 0 0 3 0x14280 nfsidl nfsio 3375 449925 0 0 3 0x14200 acct acct 50598 374828 22601 0 3 0x82 thrsleep syz-fuzzer 50598 404417 22601 0 3 0x4000082 nanoslp syz-fuzzer 50598 414181 22601 0 3 0x4000082 thrsleep syz-fuzzer 50598 28286 22601 0 3 0x4000082 thrsleep syz-fuzzer 50598 171209 22601 0 3 0x4000082 thrsleep syz-fuzzer 50598 355747 22601 0 3 0x4000082 thrsleep syz-fuzzer 50598 426526 22601 0 3 0x4000082 kqread syz-fuzzer 50598 418386 22601 0 3 0x4000082 thrsleep syz-fuzzer 22601 376433 56015 0 3 0x10008a sigsusp ksh 56015 297841 82816 0 3 0x9a poll sshd 82816 20352 1 0 3 0x88 poll sshd 15361 50579 96811 73 3 0x100090 kqread syslogd 96811 405772 1 0 3 0x100082 netio syslogd 84536 788 1 0 3 0x100080 kqread resolvd 6194 132094 44801 77 3 0x100092 kqread dhcpleased 55583 177138 44801 77 3 0x100092 kqread dhcpleased 44801 266522 1 0 3 0x80 kqread dhcpleased 2207 511403 0 0 3 0x14200 bored smr 24981 242887 0 0 2 0x14200 zerothread 61651 439902 0 0 3 0x14200 aiodoned aiodoned 61038 401173 0 0 3 0x14200 syncer update 47811 469688 0 0 3 0x14200 cleaner cleaner 16042 279593 0 0 3 0x14200 reaper reaper 36248 289813 0 0 3 0x14200 pgdaemon pagedaemon 33810 237959 0 0 3 0x14200 bored viomb 62167 520753 0 0 3 0x40014200 acpi0 acpi0 82279 489140 0 0 3 0x14200 bored softnet 31831 178222 0 0 3 0x14200 bored systqmp 30934 271490 0 0 3 0x14200 bored systq 16420 163952 0 0 3 0x40014200 bored softclock 80085 229876 0 0 3 0x40014200 idle0 1 383362 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 10175 6472K 7703K 78643K 57278 0 pcb 13 14K 16K 78643K 1105 0 rtable 215 23K 23K 78643K 3033 0 ifaddr 79 20K 20K 78643K 912 0 sysctl 3 1K 1K 78643K 3 0 counters 23 16K 17K 78643K 130 0 ioctlops 0 0K 4K 78643K 6771 0 iov 0 0K 28K 78643K 608 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1358 85K 85K 78643K 14789 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 92 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 928 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 8 25K 49K 78643K 10560 0 sigio 0 0K 0K 78643K 98 0 proc 59 55K 71K 78643K 1589 0 subproc 52 3K 3K 78643K 533 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 222 0 in_multi 55 3K 3K 78643K 836 0 ether_multi 1 0K 0K 78643K 137 0 mrt 0 0K 0K 78643K 15 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 2503 0 pfkey data 0 0K 1K 78643K 3 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 331 450K 474K 78643K 126811 0 UVM aobj 131 4K 4K 78643K 146 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 558 0 NDP 8 0K 1K 78643K 213 0 temp 107 4213K 4469K 78643K 68514 0 kqueue 10 14K 24K 78643K 356 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 120 397 0 394 4 3 1 3 0 8 0 rtentry 112 562 0 502 3 1 2 3 0 8 0 unpcb 128 4168 0 4155 34 33 1 5 0 8 0 syncache 296 47 0 47 13 13 0 1 0 8 0 tcpqe 32 101 0 101 4 4 0 1 0 8 0 tcpcb 736 2763 0 2759 113 111 2 14 0 8 1 arp 88 90 0 80 1 0 1 1 0 8 0 ipq 40 28 0 27 10 9 1 1 0 8 0 ipqe 40 620 0 619 10 9 1 1 0 8 0 inpcb 304 8449 0 8442 121 115 6 11 0 8 5 rttmr 72 6 0 6 2 2 0 1 0 8 0 ip6q 72 5 0 4 2 1 1 1 0 8 0 ip6af 40 8 0 7 2 1 1 1 0 8 0 nd6 48 156 0 143 1 0 1 1 0 8 0 pkpcb 40 30 0 30 3 3 0 1 0 8 0 kcovpl 48 41 0 37 1 0 1 1 0 8 0 ppxss 1152 26 0 26 6 6 0 1 0 8 0 pfstscr 40 13 0 13 3 3 0 1 0 8 0 pfosfp 40 10 0 9 2 1 1 1 0 8 0 pfosfpen 112 10 0 9 2 1 1 1 0 8 0 pfrktable 1344 409 0 374 13 10 3 4 0 8 0 pftag 88 44 0 30 2 1 1 1 0 8 0 pfqueue 264 2 0 2 2 2 0 1 0 8 0 pfstitem 24 22 0 22 1 1 0 1 0 8 0 pfstkey 112 254 0 254 2 2 0 1 0 8 0 pfstate 320 127 0 127 2 2 0 1 0 8 0 pfrule 1360 1566 0 1277 29 4 25 25 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 2464 0 2190 42 24 18 20 0 8 0 art_table 32 2466 0 2191 6 3 3 3 0 8 0 art_node 16 561 0 510 1 0 1 1 0 8 0 sysvmsgpl 40 118 0 78 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 926 0 916 1 0 1 1 0 8 0 shmpl 112 143 0 15 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 15459 0 14031 90 0 90 90 0 8 0 ffsino 240 15459 0 14031 85 0 85 85 0 8 0 nchpl 144 29258 0 27676 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 113440 0 113439 5 4 1 1 0 8 0 vcpupl 1984 96 0 2 12 0 12 12 0 8 0 vmpool 528 247 0 153 10 3 7 7 0 8 0 pfiaddrpl 120 399 0 184 7 0 7 7 0 8 0 scxspl 216 83879 0 83879 29 28 1 8 0 8 1 plimitpl 152 709 0 699 1 0 1 1 0 8 0 sigapl 424 10693 0 10639 8 1 7 7 0 8 0 futexpl 64 101150 0 101149 2 1 1 1 0 8 0 knotepl 112 3502 0 3452 3 1 2 3 0 8 0 kqueuepl 184 1707 0 1701 34 30 4 4 0 8 3 pipepl 304 1889 0 1873 50 48 2 7 0 8 0 fdescpl 432 10658 0 10639 3 0 3 3 0 8 0 filepl 120 75001 0 74853 80 71 9 11 0 8 4 lockfpl 104 2158 0 2156 2 1 1 2 0 8 0 lockfspl 48 944 0 942 1 0 1 1 0 8 0 sessionpl 144 60 0 48 1 0 1 1 0 8 0 pgrppl 48 71 0 59 1 0 1 1 0 8 0 ucredpl 96 12303 0 12293 1 0 1 1 0 8 0 zombiepl 144 10639 0 10639 2 1 1 1 0 8 1 processpl 1000 10693 0 10639 8 0 8 8 0 8 0 procpl 672 25650 0 25587 20 13 7 8 0 8 0 sosppl 168 54 0 54 9 9 0 1 0 8 0 sockpl 448 13055 0 13032 247 237 10 25 0 8 7 mcl64k 65536 326 0 326 16 15 1 1 0 8 1 mcl16k 16384 84 0 84 17 17 0 1 0 8 0 mcl12k 12288 241 0 241 21 20 1 1 0 8 1 mcl9k 9216 106 0 106 18 18 0 1 0 8 0 mcl8k 8192 514 0 514 18 17 1 1 0 8 1 mcl4k 4096 977 0 977 15 14 1 1 0 8 1 mcl2k2 2112 76 0 76 21 20 1 1 0 8 1 mcl2k 2048 94615 0 94572 33 26 7 19 0 8 0 mtagpl 96 2472 0 2457 27 26 1 16 0 8 0 mbufpl 256 218240 0 217955 172 151 21 99 0 8 0 bufpl 288 20346 0 13929 459 0 459 459 0 8 0 anonpl 24 2947890 0 2930560 310 196 114 137 0 188 0 amapchunkpl 152 313691 0 313042 114 86 28 41 0 158 1 amappl16 200 32967 0 32316 194 159 35 48 0 8 0 amappl15 192 3405 0 3402 1 0 1 1 0 8 0 amappl14 184 672 0 667 1 0 1 1 0 8 0 amappl13 176 2218 0 2217 1 0 1 1 0 8 0 amappl12 168 1558 0 1554 1 0 1 1 0 8 0 amappl11 160 108 0 98 1 0 1 1 0 8 0 amappl10 152 1396 0 1390 1 0 1 1 0 8 0 amappl9 144 2234 0 2232 1 0 1 1 0 8 0 amappl8 136 1089 0 1021 3 0 3 3 0 8 0 amappl7 128 254 0 245 1 0 1 1 0 8 0 amappl6 120 2127 0 2109 1 0 1 1 0 8 0 amappl5 112 10080 0 10064 1 0 1 1 0 8 0 amappl4 104 2231 0 2201 1 0 1 1 0 8 0 amappl3 96 3126 0 3110 1 0 1 1 0 8 0 amappl2 88 2943 0 2899 2 0 2 2 0 8 0 amappl1 80 185180 0 184729 13 2 11 12 0 8 0 amappl 88 125667 0 125472 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 72 145 0 15 3 0 3 3 0 8 0 uaddrrnd 24 10905 0 10792 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10905 0 10792 1 0 1 1 0 8 0 vmmpekpl 168 70615 0 70571 7 4 3 3 0 8 0 vmmpepl 168 983031 0 980844 337 212 125 127 0 357 15 vmsppl 272 10904 0 10792 10 2 8 8 0 8 0 rwobjpl 24 228780 0 221259 54 7 47 47 0 8 0 pdppl 4096 21816 0 21678 205 63 142 144 0 8 4 pvpl 32 5092218 0 5071803 464 284 180 215 0 265 0 pmappl 216 10904 0 10792 7 0 7 7 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1564 0 688 28 1 27 28 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace done_flush() at done_flush+0x38 vm_run(ffff800027d81cd0) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4295 VOP_IOCTL(fffffd8071a52c88,c0205602,ffff800027d81cd0,1,fffffd807f7d8360,ffff8000216d2d28) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067e8b6a8,c0205602,ffff800027d81cd0,ffff8000216d2d28) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000216d2d28,ffff800027d81de8,ffff800027d81e40) at sys_ioctl+0x49e syscall(ffff800027d81eb0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x692e70a16e0, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace done_flush() at done_flush+0x38 vm_run(ffff800027d81cd0) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4295 VOP_IOCTL(fffffd8071a52c88,c0205602,ffff800027d81cd0,1,fffffd807f7d8360,ffff8000216d2d28) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067e8b6a8,c0205602,ffff800027d81cd0,ffff8000216d2d28) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000216d2d28,ffff800027d81de8,ffff800027d81e40) at sys_ioctl+0x49e syscall(ffff800027d81eb0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x692e70a16e0, count: -7