kernel: protection fault trap, code=0 Stopped at done_flush+0x38: movl %eax,%dr6 ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace done_flush() at done_flush+0x38 vm_run(ffff80002e4cf510) at vm_run+0x1cf sys/arch/amd64/amd64/vmm.c:4529 vmmioctl(a00,c0205602,ffff80002e4cf510,1,ffff80002e4747e8) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:680 VOP_IOCTL(fffffd806eff06c8,c0205602,ffff80002e4cf510,1,fffffd807f7d7340,ffff80002e4747e8) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8069d954c8,c0205602,ffff80002e4cf510,ffff80002e4747e8) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002e4747e8,ffff80002e4cf628,ffff80002e4cf670) at sys_ioctl+0x4a2 syscall(ffff80002e4cf6f0) at syscall+0x4c2 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002e4cf6f0) at syscall+0x4c2 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x969e538a5d0, count: -8 ddb{1}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800022d62648 rbp 0xffff80002e4cf260 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xfffffffffffffffd r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0x5741658041cec3a3 r11 0x8132ccf6d21110ce r12 0xffff800022d623a0 r13 0xffff800020dd8ff0 r14 0xffff800022d62000 r15 0xffff80002e4cf510 rip 0xffffffff812f7a00 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80002e4cf0b6 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{1}> show proc PROC (syz-executor.0) pid=509871 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff80002e474d28,0xffffffff82a7f7b8 process=0xffff8000fffeee30 user=0xffff80002e4ca000, vmspace=0xfffffd807648e450 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 92241 297064 78894 0 2 0 syz-executor.7 63061 170171 2529 0 7 0 syz-executor.0 *63061 509871 2529 0 7 0x4000000 syz-executor.0 74428 365751 37563 0 2 0 syz-executor.4 74428 486644 37563 0 3 0x4000080 fsleep syz-executor.4 12070 397701 80074 0 2 0 syz-executor.3 12070 404985 80074 0 3 0x4000080 fsleep syz-executor.3 47525 375715 52367 0 2 0 syz-executor.6 47525 9234 52367 0 2 0x4000000 syz-executor.6 3922 31959 37553 0 3 0x80 nanoslp syz-executor.1 3922 353574 37553 0 3 0x4000080 netcon syz-executor.1 3922 154052 37553 0 3 0x4000080 fsleep syz-executor.1 78894 431196 71915 0 2 0x2 syz-executor.7 37563 502084 71915 0 3 0x82 nanoslp syz-executor.4 2529 285398 71915 0 3 0x82 nanoslp syz-executor.0 37553 90054 71915 0 3 0x82 nanoslp syz-executor.1 80074 156879 71915 0 3 0x82 nanoslp syz-executor.3 61702 258963 1 0 3 0x100083 ttyopn getty 94310 463538 0 0 3 0x14280 nfsidl nfsio 61266 279359 0 0 3 0x14280 nfsidl nfsio 16508 290938 0 0 3 0x14280 nfsidl nfsio 30675 184791 0 0 3 0x14280 nfsidl nfsio 6642 206356 0 0 3 0x14280 nfsidl nfsio 2299 415544 0 0 3 0x14280 nfsidl nfsio 61253 241635 0 0 3 0x14280 nfsidl nfsio 54603 168928 0 0 3 0x14280 nfsidl nfsio 10708 105385 0 0 3 0x14280 nfsidl nfsio 26710 425160 0 0 3 0x14280 nfsidl nfsio 89886 453041 0 0 3 0x14280 nfsidl nfsio 61543 67964 0 0 3 0x14280 nfsidl nfsio 83539 323713 0 0 3 0x14280 nfsidl nfsio 87217 289177 0 0 3 0x14280 nfsidl nfsio 336 286523 0 0 3 0x14280 nfsidl nfsio 91874 73081 0 0 3 0x14280 nfsidl nfsio 65879 218051 0 0 3 0x14280 nfsidl nfsio 62517 128665 0 0 3 0x14280 nfsidl nfsio 25986 429317 0 0 3 0x14280 nfsidl nfsio 26778 378836 0 0 3 0x14280 nfsidl nfsio 52367 491474 71915 0 3 0x82 nanoslp syz-executor.6 33462 458011 71915 0 2 0x2 syz-executor.2 64135 141452 71915 0 2 0x2 syz-executor.5 22483 251722 0 0 3 0x14200 bored sosplice 71915 90343 21407 0 3 0x82 wait syz-fuzzer 71915 343101 21407 0 3 0x4000082 nanoslp syz-fuzzer 71915 221000 21407 0 3 0x4000082 thrsleep syz-fuzzer 71915 71487 21407 0 3 0x4000082 wait syz-fuzzer 71915 469855 21407 0 3 0x4000082 thrsleep syz-fuzzer 71915 447978 21407 0 3 0x4000082 thrsleep syz-fuzzer 71915 91771 21407 0 3 0x4000082 wait syz-fuzzer 71915 186363 21407 0 3 0x4000082 wait syz-fuzzer 71915 323797 21407 0 3 0x4000082 wait syz-fuzzer 71915 414435 21407 0 3 0x4000082 thrsleep syz-fuzzer 71915 243560 21407 0 3 0x4000082 wait syz-fuzzer 71915 430904 21407 0 3 0x4000082 thrsleep syz-fuzzer 71915 24735 21407 0 3 0x4000082 wait syz-fuzzer 71915 229877 21407 0 3 0x4000082 kqread syz-fuzzer 71915 107680 21407 0 3 0x4000082 thrsleep syz-fuzzer 71915 50122 21407 0 3 0x4000082 wait syz-fuzzer 21407 513020 72408 0 3 0x10008a sigsusp ksh 72408 476451 72618 0 3 0x9a kqread sshd 72618 128080 1 0 3 0x88 kqread sshd 79375 368365 52570 74 3 0x1100092 bpf pflogd 52570 466944 1 0 3 0x80 netio pflogd 62786 140526 24070 73 3 0x1100090 kqread syslogd 24070 10431 1 0 3 0x100082 netio syslogd 21484 414114 1 0 3 0x100080 kqread resolvd 83152 224853 84893 77 3 0x100092 kqread dhcpleased 93985 446770 84893 77 3 0x100092 kqread dhcpleased 84893 256753 1 0 3 0x80 kqread dhcpleased 9070 410298 0 0 3 0x14200 bored smr 73282 294860 0 0 2 0x14200 zerothread 62038 471863 0 0 3 0x14200 aiodoned aiodoned 44628 496107 0 0 3 0x14200 syncer update 96298 138483 0 0 3 0x14200 cleaner cleaner 1443 111463 0 0 3 0x14200 reaper reaper 73764 198022 0 0 3 0x14200 pgdaemon pagedaemon 20869 267359 0 0 3 0x14200 bored viomb 14001 91059 0 0 3 0x40014200 acpi0 acpi0 99748 185684 0 0 3 0x40014200 idle1 74821 450080 0 0 3 0x14200 bored softnet 10710 409188 0 0 3 0x14200 bored softnet 6228 514977 0 0 3 0x14200 bored softnet 88884 429543 0 0 3 0x14200 bored softnet 134 494479 0 0 3 0x14200 bored systqmp 89915 216847 0 0 3 0x14200 bored systq 58431 192532 0 0 3 0x40014200 bored softclock 73763 500863 0 0 3 0x40014200 idle0 1 328121 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10247 6578K 7342K 78643K 25304 0 pcb 13 22K 25K 78643K 2200 0 rtable 189 11K 12K 78643K 2371 0 ifaddr 84 20K 22K 78643K 795 0 sysctl 3 1K 5K 78643K 13 0 counters 58 35K 36K 78643K 490 0 ioctlops 0 0K 4K 78643K 3348 0 iov 0 0K 80K 78643K 5251 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1665 104K 104K 78643K 17834 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 155 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 2312 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 85K 78643K 11861 0 sigio 0 0K 0K 78643K 280 0 proc 70 91K 115K 78643K 2082 0 subproc 104 6K 6K 78643K 556 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 972 0 in_multi 78 5K 6K 78643K 843 0 ether_multi 1 0K 0K 78643K 80 0 mrt 1 0K 0K 78643K 81 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 277 1235K 1235K 78643K 277 0 exec 0 0K 1K 78643K 3330 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 8 62K 64K 78643K 10 0 UVM amap 470 727K 732K 78643K 83539 0 UVM aobj 131 5K 5K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 449 0 NDP 14 0K 2K 78643K 267 0 temp 137 4698K 70234K 78643K 99489 0 kqueue 13 20K 28K 78643K 894 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 1002 0 999 15 14 1 3 0 8 0 rtentry 112 683 0 603 4 1 3 4 0 8 0 unpcb 144 11192 0 11176 123 113 10 11 0 8 9 syncache 296 18 0 18 7 6 1 1 0 8 1 tcpqe 32 747 0 747 6 6 0 3 0 8 0 tcpcb 776 2633 0 2627 112 105 7 8 0 8 6 arp 120 93 0 79 1 0 1 1 0 8 0 inpcb 368 9435 0 9426 193 180 13 23 0 8 12 nd6 48 154 0 135 1 0 1 1 0 8 0 pkpcb 40 15 0 15 4 4 0 1 0 8 0 kcovpl 48 42 0 34 1 0 1 1 0 8 0 ppxss 1256 133 0 133 18 17 1 1 0 8 1 pppxif 1440 63 0 63 9 8 1 1 0 8 1 pfstscr 40 23 0 23 4 4 0 1 0 8 0 pffrag 232 31 0 29 7 6 1 1 0 482 0 pffrnode 88 31 0 29 7 6 1 1 0 8 0 pffrent 40 104 0 102 7 6 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfanchor 1280 632 0 312 37 6 31 32 0 8 0 pfstitem 24 6 0 6 2 2 0 1 0 8 0 pfstkey 120 32 0 32 4 4 0 1 0 8 0 pfstate 384 16 0 16 4 4 0 1 0 8 0 rttmr 136 28 0 28 8 8 0 1 0 8 0 art_heap8 4096 14 0 13 11 10 1 3 0 8 0 art_heap4 256 3061 0 2660 45 15 30 30 0 8 0 art_table 32 3075 0 2673 4 0 4 4 0 8 0 art_node 16 675 0 604 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 1 1 0 1 1 0 8 0 semapl 112 2310 0 2300 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 21360 0 19872 94 0 94 94 0 8 0 ffsino 272 21360 0 19872 100 0 100 100 0 8 0 nchpl 144 38423 0 37861 63 39 24 63 0 8 0 uvmvnodes 80 6170 0 0 126 0 126 126 0 8 0 vnodes 216 6170 0 0 343 0 343 343 0 8 0 namei 1024 152085 0 152083 3 2 1 2 0 8 0 percpumem 16 257 0 216 1 0 1 1 0 8 0 vcpupl 2048 106 0 0 14 0 14 14 0 8 0 vmpool 568 131 0 25 8 0 8 8 0 8 0 kstatmem 264 334 0 306 3 0 3 3 0 8 0 scsiplug 72 5 0 5 2 2 0 1 0 8 0 scxspl 216 104101 0 104101 34 33 1 6 0 8 1 plimitpl 152 1384 0 1368 1 0 1 1 0 8 0 sigapl 424 12162 0 12095 10 2 8 8 0 8 0 futexpl 64 100972 0 100969 2 1 1 1 0 8 0 knotepl 120 926 0 0 15 0 15 15 0 8 0 kqueuepl 216 2465 0 2455 54 53 1 6 0 8 0 pipepl 320 2291 0 2262 74 71 3 8 0 8 0 fdescpl 496 12101 0 12072 5 1 4 5 0 8 0 filepl 152 103993 0 103743 190 171 19 22 0 8 9 lockfpl 104 2507 0 2505 6 5 1 2 0 8 0 lockfspl 48 874 0 872 1 0 1 1 0 8 0 sessionpl 144 64 0 47 1 0 1 1 0 8 0 pgrppl 48 240 0 223 1 0 1 1 0 8 0 ucredpl 104 29940 0 29925 1 0 1 1 0 8 0 zombiepl 144 12095 0 12095 1 0 1 1 0 8 1 processpl 1072 12162 0 12095 5 0 5 5 0 8 0 procpl 672 34506 0 34418 15 6 9 10 0 8 0 srpgc 96 47 0 47 15 15 0 1 0 8 0 sosppl 168 81 0 81 15 15 0 1 0 8 0 sockpl 488 21817 0 21789 612 578 34 42 0 8 30 mcl64k 65536 29 0 0 3 0 3 3 0 8 0 mcl16k 16384 41 0 0 5 2 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 18 0 0 2 0 2 2 0 8 0 mcl8k 8192 49 0 0 4 1 3 3 0 8 0 mcl4k 4096 33 0 0 3 0 3 3 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 510 0 0 49 9 40 49 0 8 0 mtagpl 96 654 0 0 12 0 12 12 0 8 0 mbufpl 256 1791 0 0 84 0 84 84 0 8 0 bufpl 288 23263 0 16932 453 0 453 453 0 8 0 anonpl 24 2434382 0 2415773 346 161 185 191 0 186 62 amapchunkpl 152 235561 0 234722 125 65 60 64 0 158 23 amappl16 200 19107 0 18561 83 54 29 40 0 8 0 amappl15 192 9 0 7 1 0 1 1 0 8 0 amappl14 184 260 0 248 2 1 1 2 0 8 0 amappl13 176 16 0 16 4 4 0 1 0 8 0 amappl12 168 877 0 871 1 0 1 1 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 70 0 59 1 0 1 1 0 8 0 amappl9 144 1011 0 1011 20 20 0 1 0 8 0 amappl8 136 635 0 516 5 0 5 5 0 8 0 amappl7 128 87 0 69 1 0 1 1 0 8 0 amappl6 120 732 0 710 2 1 1 2 0 8 0 amappl5 112 265 0 252 1 0 1 1 0 8 0 amappl4 104 1075 0 1041 2 1 1 2 0 8 0 amappl3 96 36276 0 36220 2 0 2 2 0 8 0 amappl2 88 13266 0 13187 3 1 2 3 0 8 0 amappl1 80 276280 0 275519 26 8 18 22 0 8 0 amappl 88 82552 0 82294 8 1 7 7 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 12232 0 12097 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 12232 0 12097 1 0 1 1 0 8 0 vmmpekpl 168 95484 0 95400 4 0 4 4 0 8 0 vmmpepl 168 1107118 0 1104124 314 167 147 152 0 357 0 vmsppl 368 12231 0 12097 15 2 13 13 0 8 0 rwobjpl 56 294957 0 286789 125 9 116 116 0 8 0 pdppl 4096 24471 0 24300 677 502 175 175 0 8 4 pvpl 32 4723399 0 4699247 683 372 311 326 0 265 104 pmappl 248 12231 0 12097 10 1 9 9 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1777 0 742 30 0 30 30 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff829d7ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 end of kernel end trace frame: 0x7f7ffff323f0, count: -3 ddb{0}> machine ddbcpu 1 Stopped at done_flush+0x38: movl %eax,%dr6 ddb{1}> trace done_flush() at done_flush+0x38 vm_run(ffff80002e4cf510) at vm_run+0x1cf sys/arch/amd64/amd64/vmm.c:4529 vmmioctl(a00,c0205602,ffff80002e4cf510,1,ffff80002e4747e8) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:680 VOP_IOCTL(fffffd806eff06c8,c0205602,ffff80002e4cf510,1,fffffd807f7d7340,ffff80002e4747e8) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8069d954c8,c0205602,ffff80002e4cf510,ffff80002e4747e8) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002e4747e8,ffff80002e4cf628,ffff80002e4cf670) at sys_ioctl+0x4a2 syscall(ffff80002e4cf6f0) at syscall+0x4c2 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002e4cf6f0) at syscall+0x4c2 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x969e538a5d0, count: -8