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(ffff80002e4631c0) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4297 vmmioctl(a00,c0205602,ffff80002e4631c0,1,ffff800021231a48) at vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 VOP_IOCTL(fffffd806e208bb0,c0205602,ffff80002e4631c0,1,fffffd807f7d8780,ffff800021231a48) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8068179900,c0205602,ffff80002e4631c0,ffff800021231a48) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800021231a48,ffff80002e4632d8,ffff80002e463330) at sys_ioctl+0x4a2 syscall(ffff80002e4633a0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e4633a0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x333127baa80, count: -8 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800029512638 rbp 0xffff80002e462f30 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xb2fc7c040c8826cf r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0xc21b5b87aac151a2 r11 0xe1ca983fe0d1a765 r12 0xffffffff82965aa0 dt_prov_static r13 0x246 r14 0xffff800029512000 r15 0xffff80002e4631c0 rip 0xffffffff82125b20 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80002e462d86 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor.0) pid=286596 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff8000212302a8,0xffff8000246b27f0 process=0xffff80002e427200 user=0xffff80002e45e000, vmspace=0xfffffd8067b40730 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 64265 135376 89988 0 2 0 syz-executor.6 68776 350842 9336 0 3 0x80 nanoslp syz-executor.1 68776 151035 9336 0 3 0x4000080 fsleep syz-executor.1 68776 126380 9336 0 3 0x4000080 fsleep syz-executor.1 63914 129946 94012 0 2 0 syz-executor.0 *63914 286596 94012 0 7 0x4000000 syz-executor.0 76560 469012 81922 0 2 0 syz-executor.2 76560 109408 81922 0 3 0x4000080 fsleep syz-executor.2 55202 170093 92059 0 2 0 syz-executor.4 55202 506479 92059 0 2 0x4000000 syz-executor.4 12203 388965 69908 0 2 0 syz-executor.3 12203 446164 69908 0 2 0x4000000 syz-executor.3 96747 103660 22657 0 2 0 syz-executor.5 96747 242141 22657 0 3 0x4000080 fsleep syz-executor.5 96747 169313 22657 0 3 0x4000080 fsleep syz-executor.5 96747 172221 22657 0 3 0x4000080 fsleep syz-executor.5 9638 495268 30038 0 7 0 syz-executor.7 9638 515143 30038 0 3 0x4000080 fsleep syz-executor.7 9638 406220 30038 0 2 0x4000000 syz-executor.7 92059 205737 70705 0 3 0x82 nanoslp syz-executor.4 29052 32108 0 0 3 0x14200 acct acct 94012 66874 70705 0 3 0x82 nanoslp syz-executor.0 69908 466092 70705 0 3 0x82 nanoslp syz-executor.3 50619 217445 0 0 3 0x14280 nfsidl nfsio 32991 151425 0 0 3 0x14280 nfsidl nfsio 8031 283783 0 0 3 0x14280 nfsidl nfsio 95353 162594 0 0 3 0x14280 nfsidl nfsio 40520 35898 0 0 3 0x14280 nfsidl nfsio 8746 263927 0 0 3 0x14280 nfsidl nfsio 14016 473752 0 0 3 0x14280 nfsidl nfsio 74767 131505 0 0 3 0x14280 nfsidl nfsio 56162 149957 0 0 3 0x14280 nfsidl nfsio 44310 154130 0 0 3 0x14280 nfsidl nfsio 69960 448620 0 0 3 0x14280 nfsidl nfsio 49204 393300 0 0 3 0x14280 nfsidl nfsio 268 83576 0 0 3 0x14280 nfsidl nfsio 65165 203352 0 0 3 0x14280 nfsidl nfsio 20207 159592 0 0 3 0x14280 nfsidl nfsio 94836 150963 0 0 3 0x14280 nfsidl nfsio 33719 261739 0 0 3 0x14280 nfsidl nfsio 95740 522979 0 0 3 0x14280 nfsidl nfsio 17662 296402 0 0 3 0x14280 nfsidl nfsio 67602 518605 0 0 3 0x14280 nfsidl nfsio 89988 50459 70705 0 3 0x82 nanoslp syz-executor.6 22657 166241 70705 0 3 0x82 nanoslp syz-executor.5 79873 463198 1 0 3 0x100083 ttyopn getty 9336 66216 70705 0 3 0x82 nanoslp syz-executor.1 81922 22069 70705 0 3 0x82 nanoslp syz-executor.2 30038 329023 70705 0 3 0x82 nanoslp syz-executor.7 69655 331831 0 0 3 0x14200 bored sosplice 70705 256866 23901 0 3 0x82 thrsleep syz-fuzzer 70705 266280 23901 0 3 0x4000082 nanoslp syz-fuzzer 70705 509901 23901 0 3 0x4000082 thrsleep syz-fuzzer 70705 308936 23901 0 3 0x4000082 thrsleep syz-fuzzer 70705 339542 23901 0 3 0x4000082 kqread syz-fuzzer 70705 255083 23901 0 3 0x4000082 thrsleep syz-fuzzer 70705 242486 23901 0 3 0x4000082 thrsleep syz-fuzzer 70705 119658 23901 0 3 0x4000082 nanoslp syz-fuzzer 23901 64879 78620 0 3 0x10008a sigsusp ksh 78620 148648 30821 0 3 0x9a poll sshd 30821 372013 1 0 3 0x88 poll sshd 25110 158008 41032 74 3 0x100092 bpf pflogd 41032 50516 1 0 3 0x80 netio pflogd 95812 487571 39100 73 3 0x100090 kqread syslogd 39100 311569 1 0 3 0x100082 netio syslogd 68508 4768 1 0 3 0x100080 kqread resolvd 81200 246862 56856 77 3 0x100092 kqread dhcpleased 89133 337089 56856 77 3 0x100092 kqread dhcpleased 56856 162470 1 0 3 0x80 kqread dhcpleased 90320 324835 0 0 3 0x14200 bored smr 45164 53467 0 0 2 0x14200 zerothread 50065 49384 0 0 3 0x14200 aiodoned aiodoned 9384 476707 0 0 3 0x14200 syncer update 70732 171225 0 0 3 0x14200 cleaner cleaner 48442 295106 0 0 3 0x14200 reaper reaper 55109 274032 0 0 3 0x14200 pgdaemon pagedaemon 66222 502892 0 0 3 0x14200 bored viomb 84688 369341 0 0 3 0x40014200 acpi0 acpi0 52203 521206 0 0 3 0x40014200 idle1 60853 80837 0 0 3 0x14200 bored softnet 35377 34568 0 0 3 0x14200 bored systqmp 49173 371209 0 0 3 0x14200 bored systq 71616 139514 0 0 3 0x40014200 bored softclock 79802 441280 0 0 3 0x40014200 idle0 1 293964 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 63914 (syz-executor.0) thread 0xffff800021231a48 (286596) exclusive rwlock vcpu r = 0 (0xffff8000295123b0) #0 witness_lock+0x44d #1 vm_run+0x2e0 sys/arch/amd64/amd64/vmm.c:4264 #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 10211 6496K 7020K 78643K 26652 0 pcb 13 16K 18K 78643K 1067 0 rtable 250 24K 25K 78643K 5632 0 ifaddr 93 20K 21K 78643K 1215 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 36K 78643K 242 0 ioctlops 0 0K 4K 78643K 2941 0 iov 0 0K 16K 78643K 513 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1415 88K 89K 78643K 5524 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 40 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 665 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 18 65K 97K 78643K 5985 0 sigio 0 0K 0K 78643K 1008 0 proc 71 87K 136K 78643K 1373 0 subproc 104 13K 15K 78643K 459 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 642 0 in_multi 84 5K 6K 78643K 569 0 ether_multi 1 0K 0K 78643K 67 0 mrt 1 0K 0K 78643K 30 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 253 1129K 1129K 78643K 253 0 exec 0 0K 2K 78643K 1700 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 523 704K 705K 78643K 77495 0 UVM aobj 125 6K 6K 78643K 125 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 290 0 NDP 15 0K 1K 78643K 177 0 temp 148 4715K 8809K 78643K 43403 0 kqueue 15 24K 32K 78643K 494 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 2220 0 2216 21 20 1 3 0 8 0 rtentry 112 447 0 355 5 1 4 4 0 8 0 unpcb 136 4213 0 4196 42 37 5 6 0 8 4 syncache 296 56 0 56 12 11 1 1 0 8 1 tcpqe 32 181 0 181 8 8 0 1 0 8 0 tcpcb 736 2559 0 2554 75 73 2 20 0 8 1 arp 120 72 0 56 1 0 1 1 0 8 0 inpcb 304 6995 0 6987 80 74 6 16 0 8 5 rttmr 72 7 0 7 2 2 0 1 0 8 0 nd6 48 117 0 94 1 0 1 1 0 8 0 pkpcb 40 58 0 58 6 5 1 1 0 8 1 kcovpl 48 32 0 24 1 0 1 1 0 8 0 ppxss 1248 18 0 18 6 6 0 1 0 8 0 pfstscr 40 11 0 11 2 2 0 1 0 8 0 pffrag 232 22 0 21 3 2 1 1 0 482 0 pffrnode 88 22 0 21 3 2 1 1 0 8 0 pffrent 40 310 0 309 3 2 1 1 0 8 0 pfosfp 40 1432 0 1432 5 5 0 5 0 8 0 pfosfpen 112 1432 0 1432 21 21 0 21 0 8 0 pfrke_plain 168 4 0 2 1 0 1 1 0 8 0 pfrktable 1344 1026 0 1009 5 3 2 2 0 8 0 pftag 88 44 0 36 1 0 1 1 0 8 0 pfstitem 24 27 0 24 1 0 1 1 0 8 0 pfstkey 112 39 0 36 1 0 1 1 0 8 0 pfstate 320 32 0 29 2 1 1 2 0 8 0 pfrule 1360 511 0 438 9 2 7 7 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1865 0 1437 37 7 30 32 0 8 0 art_table 32 1866 0 1437 5 1 4 5 0 8 0 art_node 16 437 0 355 1 0 1 1 0 8 0 sysvmsgpl 40 82 0 42 1 0 1 1 0 8 0 semapl 112 658 0 648 1 0 1 1 0 8 0 shmpl 112 122 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 9080 0 7635 91 0 91 91 0 8 0 ffsino 272 9080 0 7635 97 0 97 97 0 8 0 nchpl 144 16626 0 14996 63 0 63 63 0 8 0 rtmask 32 4 0 2 1 0 1 1 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 60354 0 60354 2 1 1 2 0 8 1 percpumem 16 133 0 93 1 0 1 1 0 8 0 vcpupl 2048 115 0 0 15 0 15 15 0 8 0 vmpool 560 123 0 8 9 0 9 9 0 8 0 pfiaddrpl 120 366 0 338 1 0 1 1 0 8 0 scsiplug 72 8 0 8 3 3 0 1 0 8 0 scxspl 216 45524 0 45524 15 14 1 8 0 8 1 plimitpl 152 727 0 712 1 0 1 1 0 8 0 sigapl 424 6262 0 6195 8 0 8 8 0 8 0 futexpl 64 52856 0 52849 1 0 1 1 0 8 0 knotepl 112 139 0 0 4 1 3 4 0 8 0 kqueuepl 216 2999 0 2980 49 44 5 8 0 8 3 pipepl 336 792 0 764 12 9 3 8 0 8 0 fdescpl 496 6225 0 6194 5 1 4 5 0 8 0 filepl 152 44342 0 44095 63 43 20 21 0 8 8 lockfpl 104 2187 0 2184 7 5 2 2 0 8 1 lockfspl 48 486 0 483 1 0 1 1 0 8 0 sessionpl 144 49 0 32 1 0 1 1 0 8 0 pgrppl 48 88 0 71 1 0 1 1 0 8 0 ucredpl 96 5387 0 5375 1 0 1 1 0 8 0 zombiepl 144 6195 0 6195 1 0 1 1 0 8 1 processpl 1064 6262 0 6195 5 0 5 5 0 8 0 procpl 672 17957 0 17872 19 11 8 9 0 8 0 srpgc 96 44 0 44 11 10 1 1 0 8 1 sosppl 168 62 0 62 6 5 1 1 0 8 1 sockpl 480 13561 0 13532 246 226 20 30 0 8 16 mcl64k 65536 42 0 0 3 0 3 3 0 8 0 mcl16k 16384 32 0 0 4 2 2 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 23 0 0 2 0 2 2 0 8 0 mcl8k 8192 33 0 0 3 0 3 3 0 8 0 mcl4k 4096 23 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 181 0 0 18 0 18 18 0 8 0 mtagpl 96 677 0 0 14 0 14 14 0 8 0 mbufpl 256 1552 0 0 87 1 86 86 0 8 0 bufpl 288 11342 0 5002 455 1 454 454 0 8 0 anonpl 24 1711496 0 1693040 187 53 134 159 0 186 0 amapchunkpl 152 191641 0 190784 73 35 38 46 0 158 0 amappl16 200 14473 0 13754 68 27 41 50 0 8 0 amappl15 192 1978 0 1963 1 0 1 1 0 8 0 amappl14 184 130 0 129 2 1 1 1 0 8 0 amappl13 176 440 0 438 1 0 1 1 0 8 0 amappl12 168 772 0 768 1 0 1 1 0 8 0 amappl11 160 863 0 844 1 0 1 1 0 8 0 amappl10 152 734 0 728 1 0 1 1 0 8 0 amappl9 144 917 0 914 1 0 1 1 0 8 0 amappl8 136 1983 0 1873 5 1 4 4 0 8 0 amappl7 128 1064 0 1052 1 0 1 1 0 8 0 amappl6 120 706 0 674 2 0 2 2 0 8 0 amappl5 112 6074 0 6051 1 0 1 1 0 8 0 amappl4 104 2994 0 2959 2 1 1 2 0 8 0 amappl3 96 1380 0 1366 1 0 1 1 0 8 0 amappl2 88 1334 0 1289 2 0 2 2 0 8 0 amappl1 80 115460 0 114855 17 3 14 15 0 8 0 amappl 88 76457 0 76130 8 0 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 72 124 0 0 3 0 3 3 0 8 0 uaddrrnd 24 6348 0 6202 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6348 0 6202 1 0 1 1 0 8 0 vmmpekpl 168 47581 0 47500 4 0 4 4 0 8 0 vmmpepl 168 575154 0 572050 210 65 145 147 0 357 8 vmsppl 368 6347 0 6202 15 1 14 14 0 8 0 rwobjpl 56 143020 0 135135 120 7 113 116 0 8 0 pdppl 4096 12703 0 12519 475 291 184 184 0 8 0 pvpl 32 2949463 0 2927929 292 86 206 238 0 265 3 pmappl 248 6347 0 6202 11 1 10 10 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1408 0 390 30 0 30 30 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff80002e4631c0) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4297 vmmioctl(a00,c0205602,ffff80002e4631c0,1,ffff800021231a48) at vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 VOP_IOCTL(fffffd806e208bb0,c0205602,ffff80002e4631c0,1,fffffd807f7d8780,ffff800021231a48) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8068179900,c0205602,ffff80002e4631c0,ffff800021231a48) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800021231a48,ffff80002e4632d8,ffff80002e463330) at sys_ioctl+0x4a2 syscall(ffff80002e4633a0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e4633a0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x333127baa80, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) 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: 0x7f7ffffda1f0, count: -3