kernel: protection fault trap, code=0 Stopped at done_flush+0x38: movl %eax,%dr6 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff800025b15770) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4295 vmmioctl(a00,c0205602,ffff800025b15770,1,ffff800027b8c2a0) at vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 VOP_IOCTL(fffffd806ebb72f0,c0205602,ffff800025b15770,1,fffffd807f7d7840,ffff800027b8c2a0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067d2fac0,c0205602,ffff800025b15770,ffff800027b8c2a0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800027b8c2a0,ffff800025b15888,ffff800025b158e0) at sys_ioctl+0x4a2 syscall(ffff800025b15950) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800025b15950) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa7996c4470, count: -8 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800027afc638 rbp 0xffff800025b154e0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xfe000000c0 r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0x7f2a61d2641124ac r11 0xd5940d8a3b482c60 r12 0xffffffff82796800 dt_prov_static r13 0x246 r14 0xffff800027afc000 r15 0xffff800025b15770 rip 0xffffffff812d2000 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff800025b15336 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor.1) pid=270719 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800022ca1a40,0xffff800027b8d510 process=0xffff800027c125a0 user=0xffff800025b10000, vmspace=0xfffffd805eb7f2e8 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 78877 171886 2793 0 2 0 syz-executor.0 78877 490035 2793 0 3 0x4000080 fsleep syz-executor.0 30724 442675 64386 0 2 0 syz-executor.2 30724 238498 64386 0 3 0x4000080 fsleep syz-executor.2 61236 344523 58649 0 2 0 syz-executor.1 *61236 270719 58649 0 7 0x4000000 syz-executor.1 64386 400885 10147 0 3 0x82 nanoslp syz-executor.2 58649 465465 10147 0 3 0x82 nanoslp syz-executor.1 15765 87231 0 0 3 0x14280 nfsidl nfsio 84855 203366 0 0 3 0x14280 nfsidl nfsio 88824 307983 0 0 3 0x14280 nfsidl nfsio 74899 118028 0 0 3 0x14280 nfsidl nfsio 67972 121147 0 0 3 0x14280 nfsidl nfsio 40925 362698 0 0 3 0x14280 nfsidl nfsio 93505 2395 0 0 3 0x14280 nfsidl nfsio 53375 201293 0 0 3 0x14280 nfsidl nfsio 12051 408746 0 0 3 0x14280 nfsidl nfsio 7657 446898 0 0 3 0x14280 nfsidl nfsio 18783 206408 0 0 3 0x14280 nfsidl nfsio 64917 428475 0 0 3 0x14280 nfsidl nfsio 4438 510439 0 0 3 0x14280 nfsidl nfsio 98657 135074 0 0 3 0x14280 nfsidl nfsio 62222 378622 0 0 3 0x14280 nfsidl nfsio 81018 102138 0 0 3 0x14280 nfsidl nfsio 5528 128723 0 0 3 0x14280 nfsidl nfsio 33617 483537 0 0 3 0x14280 nfsidl nfsio 53064 106217 0 0 3 0x14280 nfsidl nfsio 42220 269736 0 0 3 0x14280 nfsidl nfsio 5675 393424 10147 0 3 0x82 nanoslp syz-executor.3 2793 317608 10147 0 3 0x82 nanoslp syz-executor.0 46014 486991 1 0 3 0x100083 ttyin getty 13869 217021 0 0 3 0x14200 acct acct 75538 516766 0 0 3 0x14200 bored sosplice 10147 407340 72795 0 3 0x82 thrsleep syz-fuzzer 10147 39724 72795 0 3 0x4000082 thrsleep syz-fuzzer 10147 86043 72795 0 3 0x4000082 thrsleep syz-fuzzer 10147 471713 72795 0 3 0x4000082 thrsleep syz-fuzzer 10147 326754 72795 0 3 0x4000082 kqread syz-fuzzer 10147 260747 72795 0 3 0x4000082 thrsleep syz-fuzzer 10147 291639 72795 0 3 0x4000082 thrsleep syz-fuzzer 10147 397570 72795 0 3 0x4000082 thrsleep syz-fuzzer 72795 76961 59978 0 3 0x10008a sigsusp ksh 59978 67212 10227 0 3 0x9a poll sshd 10227 34043 1 0 3 0x88 poll sshd 48743 375764 81886 74 3 0x100092 bpf pflogd 81886 308600 1 0 3 0x80 netio pflogd 3889 161414 29148 73 3 0x100090 kqread syslogd 29148 12580 1 0 3 0x100082 netio syslogd 70657 417034 1 0 3 0x100080 kqread resolvd 33744 173506 4678 77 3 0x100092 kqread dhcpleased 21990 514658 4678 77 3 0x100092 kqread dhcpleased 4678 511986 1 0 3 0x80 kqread dhcpleased 29088 30653 0 0 3 0x14200 bored smr 40403 312342 0 0 2 0x14200 zerothread 97498 338601 0 0 3 0x14200 aiodoned aiodoned 41135 507647 0 0 3 0x14200 syncer update 78366 393561 0 0 3 0x14200 cleaner cleaner 85498 464398 0 0 3 0x14200 reaper reaper 99621 237700 0 0 3 0x14200 pgdaemon pagedaemon 45695 95149 0 0 3 0x14200 bored viomb 21643 292217 0 0 3 0x40014200 acpi0 acpi0 61318 472156 0 0 7 0x40014200 idle1 11403 57126 0 0 3 0x14200 bored softnet 33157 500429 0 0 3 0x14200 bored systqmp 21951 183465 0 0 3 0x14200 bored systq 73081 518756 0 0 3 0x40014200 bored softclock 85272 99825 0 0 3 0x40014200 idle0 1 519875 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 61236 (syz-executor.1) thread 0xffff800027b8c2a0 (270719) exclusive rwlock vcpu r = 0 (0xffff800027afc3b0) #0 witness_lock+0x44d #1 vm_run+0x2e0 sys/arch/amd64/amd64/vmm.c:4262 #2 vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 #3 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 #4 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 #5 sys_ioctl+0x4a2 #6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 6513K 7155K 78643K 51634 0 pcb 13 24K 27K 78643K 5230 0 rtable 205 26K 26K 78643K 6315 0 ifaddr 86 25K 28K 78643K 2308 0 sysctl 3 1K 5K 78643K 6 0 counters 50 34K 35K 78643K 702 0 ioctlops 0 0K 4K 78643K 6591 0 iov 0 0K 28K 78643K 2444 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1392 87K 88K 78643K 23072 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 265 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 4987 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 45K 78643K 25307 0 sigio 0 0K 0K 78643K 252 0 proc 72 87K 112K 78643K 4479 0 subproc 52 6K 8K 78643K 1485 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1634 0 in_multi 51 3K 3K 78643K 2642 0 ether_multi 1 0K 0K 78643K 380 0 mrt 2 0K 0K 78643K 123 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 331 1473K 1473K 78643K 331 0 exec 0 0K 2K 78643K 5519 0 pfkey data 0 0K 0K 78643K 6 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 639 1502K 1518K 78643K 314931 0 UVM aobj 131 6K 6K 78643K 161 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 2055 0 NDP 11 0K 1K 78643K 653 0 temp 130 4240K 4320K 78643K 327967 0 kqueue 11 14K 24K 78643K 1048 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 11109 0 11106 124 121 3 4 0 8 2 rtentry 112 2157 0 2095 2 0 2 2 0 8 0 unpcb 136 29013 0 28998 290 287 3 9 0 8 2 syncache 296 76 0 76 25 25 0 1 0 8 0 tcpqe 32 15 75 15 2 2 0 1 0 8 0 tcpcb 736 9291 0 9287 410 402 8 23 0 8 7 arp 120 316 0 305 1 0 1 1 0 8 0 inpcb 304 27614 0 27604 537 531 6 16 0 8 5 rttmr 72 27 0 27 10 10 0 1 0 8 0 nd6 48 460 0 449 1 0 1 1 0 8 0 pkpcb 40 407 0 407 21 21 0 1 0 8 0 kcovpl 48 111 0 107 1 0 1 1 0 8 0 ppxss 1248 90 0 90 24 24 0 1 0 8 0 pfstscr 40 61 0 61 14 14 0 1 0 8 0 pffrag 232 287 0 287 24 24 0 1 0 482 0 pffrnode 88 287 0 287 24 24 0 1 0 8 0 pffrent 40 1926 0 1926 27 27 0 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 pfrke_plain 168 15 0 15 4 4 0 1 0 8 0 pfrktable 1344 150 0 125 11 8 3 3 0 8 0 pfpktdelay 88 30 0 30 5 5 0 1 0 8 0 pftag 88 18 0 7 1 0 1 1 0 8 0 pfqueue 264 4 0 4 1 1 0 1 0 8 0 pfstitem 24 19 0 17 1 0 1 1 0 8 0 pfstkey 112 126 0 124 1 0 1 1 0 8 0 pfstate 320 71 0 69 1 0 1 1 0 8 0 pfrule 1360 801 0 646 14 1 13 13 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 9108 0 8862 55 36 19 20 0 8 0 art_table 32 9110 0 8863 4 1 3 3 0 8 0 art_node 16 2003 0 1952 1 0 1 1 0 8 0 sysvmsgpl 40 35 0 17 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 4985 0 4975 1 0 1 1 0 8 0 shmpl 112 158 0 30 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 40677 0 39216 92 0 92 92 0 8 0 ffsino 272 40677 0 39216 98 0 98 98 0 8 0 nchpl 144 72589 0 70991 61 0 61 61 0 8 0 rtmask 32 30 0 30 4 4 0 1 0 8 0 uvmvnodes 80 6174 0 0 126 0 126 126 0 8 0 vnodes 224 6174 0 0 364 0 364 364 0 8 0 namei 1024 282140 0 282140 14 13 1 2 0 8 1 percpumem 16 363 0 326 1 0 1 1 0 8 0 vcpupl 2048 413 0 1 52 0 52 52 0 8 0 vmpool 560 513 0 101 30 0 30 30 0 8 0 pfiaddrpl 120 66 0 15 2 0 2 2 0 8 0 scsiplug 72 21 0 21 7 7 0 1 0 8 0 scxspl 216 210143 0 210143 33 32 1 8 0 8 1 plimitpl 152 2584 0 2573 1 0 1 1 0 8 0 sigapl 424 25292 0 25234 8 1 7 7 0 8 0 futexpl 64 257079 0 257077 18 17 1 1 0 8 0 knotepl 112 255 0 0 5 1 4 4 0 8 0 kqueuepl 216 4998 0 4980 131 129 2 9 0 8 1 pipepl 336 4623 0 4607 142 140 2 10 0 8 0 fdescpl 496 25215 0 25193 5 1 4 4 0 8 0 filepl 152 221608 0 221456 492 480 12 18 0 8 5 lockfpl 104 7764 0 7762 18 16 2 2 0 8 1 lockfspl 48 2052 0 2050 1 0 1 1 0 8 0 sessionpl 144 132 0 119 1 0 1 1 0 8 0 pgrppl 48 217 0 204 1 0 1 1 0 8 0 ucredpl 96 56446 0 56431 1 0 1 1 0 8 0 zombiepl 144 25234 0 25233 5 4 1 1 0 8 0 processpl 1064 25292 0 25233 8 4 4 5 0 8 0 procpl 672 70963 0 70894 68 60 8 8 0 8 2 srpgc 96 116 0 116 30 30 0 1 0 8 0 sosppl 168 231 0 231 39 39 0 1 0 8 0 sockpl 480 68269 0 68244 1720 1708 12 34 0 8 8 mcl64k 65536 26 0 0 4 1 3 3 0 8 0 mcl16k 16384 33 0 0 5 2 3 3 0 8 0 mcl12k 12288 21 0 0 2 0 2 2 0 8 0 mcl9k 9216 24 0 0 2 0 2 2 0 8 0 mcl8k 8192 26 0 0 4 1 3 3 0 8 0 mcl4k 4096 25 0 0 4 1 3 3 0 8 0 mcl2k2 2112 9 0 0 1 0 1 1 0 8 0 mcl2k 2048 832 0 0 53 33 20 53 0 8 0 mtagpl 96 1691 0 0 10 3 7 10 0 8 0 mbufpl 256 6662 0 0 304 0 304 304 0 8 0 bufpl 288 46252 0 39918 454 0 454 454 0 8 0 anonpl 24 7325531 0 7302285 538 383 155 175 0 186 0 amapchunkpl 152 794869 0 794095 304 261 43 46 0 158 11 amappl16 200 73875 0 72861 289 231 58 66 0 8 0 amappl15 192 2044 0 2043 7 6 1 1 0 8 0 amappl14 184 1510 0 1509 9 8 1 1 0 8 0 amappl13 176 3783 0 3779 1 0 1 1 0 8 0 amappl12 168 4424 0 4415 1 0 1 1 0 8 0 amappl11 160 5215 0 5197 1 0 1 1 0 8 0 amappl10 152 3875 0 3866 1 0 1 1 0 8 0 amappl9 144 2854 0 2852 1 0 1 1 0 8 0 amappl8 136 4783 0 4649 5 0 5 5 0 8 0 amappl7 128 2714 0 2704 1 0 1 1 0 8 0 amappl6 120 3190 0 3165 1 0 1 1 0 8 0 amappl5 112 20339 0 20318 1 0 1 1 0 8 0 amappl4 104 12610 0 12576 1 0 1 1 0 8 0 amappl3 96 7706 0 7687 1 0 1 1 0 8 0 amappl2 88 7240 0 7176 3 1 2 2 0 8 0 amappl1 80 457366 0 456863 21 9 12 13 0 8 0 amappl 88 312192 0 311872 11 3 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 72 160 0 30 3 0 3 3 0 8 0 uaddrrnd 24 25728 0 25294 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 25728 0 25294 3 0 3 3 0 8 0 vmmpekpl 168 170878 0 170796 5 1 4 4 0 8 0 vmmpepl 168 2354280 0 2350745 1250 1065 185 189 0 357 27 vmsppl 368 25727 0 25294 44 4 40 40 0 8 0 rwobjpl 56 560051 0 551664 183 64 119 120 0 8 0 pdppl 4096 51464 0 51000 618 152 466 466 0 8 2 pvpl 32 12417446 0 12395301 887 687 200 259 0 265 0 pmappl 248 25727 0 25294 28 0 28 28 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 2375 0 789 46 0 46 46 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff800025b15770) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4295 vmmioctl(a00,c0205602,ffff800025b15770,1,ffff800027b8c2a0) at vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 VOP_IOCTL(fffffd806ebb72f0,c0205602,ffff800025b15770,1,fffffd807f7d7840,ffff800027b8c2a0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067d2fac0,c0205602,ffff800025b15770,ffff800027b8c2a0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800027b8c2a0,ffff800025b15888,ffff800025b158e0) at sys_ioctl+0x4a2 syscall(ffff800025b15950) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800025b15950) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa7996c4470, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d38ff0) 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5