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(ffff80002e3ff560) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4297 vmmioctl(a00,c0205602,ffff80002e3ff560,1,ffff800022c677b0) at vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 VOP_IOCTL(fffffd806e0dac90,c0205602,ffff80002e3ff560,1,fffffd807f7d83c0,ffff800022c677b0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8057ec4e50,c0205602,ffff80002e3ff560,ffff800022c677b0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800022c677b0,ffff80002e3ff678,ffff80002e3ff6d0) at sys_ioctl+0x4a2 syscall(ffff80002e3ff740) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3ff740) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfcf753304b0, count: -8 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff80002e37ce38 rbp 0xffff80002e3ff2d0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xffffffffffffffff r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0x53168b0e54dd8633 r11 0x2411b973581bef42 r12 0xffffffff828e1320 dt_prov_static r13 0x246 r14 0xffff80002e37c800 r15 0xffff80002e3ff560 rip 0xffffffff81d97f50 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80002e3ff126 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor.5) pid=258806 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff1268,0xffff800022c66fe0 process=0xffff8000ffffa570 user=0xffff80002e3fa000, vmspace=0xfffffd8073434738 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 54611 246772 3085 0 2 0 syz-executor.2 12578 45602 36986 0 2 0 syz-executor.5 *12578 258806 36986 0 7 0x4000000 syz-executor.5 47739 163512 54379 0 2 0 syz-executor.3 47739 123148 54379 0 3 0x4000080 fsleep syz-executor.3 62203 311738 28870 0 2 0 syz-executor.7 62203 23894 28870 0 3 0x4000080 netio syz-executor.7 87744 242306 66924 0 2 0 syz-executor.6 87744 204893 66924 0 3 0x4000080 fsleep syz-executor.6 28915 108972 3037 0 2 0x480 syz-executor.0 28915 177641 3037 0 3 0x4000080 lockf syz-executor.0 28915 346757 3037 0 3 0x4000080 fsleep syz-executor.0 28915 127303 3037 0 3 0x4000080 fsleep syz-executor.0 79119 81782 0 0 3 0x14200 acct acct 36986 348482 51244 0 3 0x82 nanoslp syz-executor.5 54379 307344 51244 0 2 0x482 syz-executor.3 20691 108273 51244 0 2 0x2 syz-executor.1 28870 330309 51244 0 2 0x482 syz-executor.7 66924 55228 51244 0 2 0x482 syz-executor.6 93999 12775 51244 0 2 0x482 syz-executor.4 3085 443155 51244 0 2 0x482 syz-executor.2 3037 59289 51244 0 3 0x82 nanoslp syz-executor.0 97271 23418 1 0 3 0x100083 ttyin getty 29530 332034 0 0 3 0x14200 bored sosplice 51244 304988 68665 0 3 0x82 kqread syz-fuzzer 51244 153025 68665 0 2 0x4000002 syz-fuzzer 51244 221537 68665 0 3 0x4000082 thrsleep syz-fuzzer 51244 104433 68665 0 3 0x4000082 nanoslp syz-fuzzer 51244 430791 68665 0 3 0x4000082 thrsleep syz-fuzzer 51244 138705 68665 0 3 0x4000082 thrsleep syz-fuzzer 51244 141561 68665 0 3 0x4000082 thrsleep syz-fuzzer 51244 302728 68665 0 3 0x4000082 thrsleep syz-fuzzer 51244 155299 68665 0 3 0x4000082 thrsleep syz-fuzzer 68665 89253 34487 0 3 0x10008a sigsusp ksh 34487 523677 58182 0 3 0x9a poll sshd 58182 165247 1 0 3 0x88 poll sshd 36782 375524 75507 74 3 0x100092 bpf pflogd 75507 434192 1 0 3 0x80 netio pflogd 75699 374057 68297 73 3 0x100090 kqread syslogd 68297 181130 1 0 3 0x100082 netio syslogd 61244 213602 1 0 3 0x100080 kqread resolvd 31309 147016 23605 77 3 0x100092 kqread dhcpleased 71170 467602 23605 77 3 0x100092 kqread dhcpleased 23605 243640 1 0 3 0x80 kqread dhcpleased 56442 424488 0 0 3 0x14200 bored smr 60976 499735 0 0 2 0x14200 zerothread 33553 312715 0 0 3 0x14200 aiodoned aiodoned 76119 283397 0 0 3 0x14200 syncer update 94181 497869 0 0 3 0x14200 cleaner cleaner 530 180253 0 0 3 0x14200 reaper reaper 21753 419896 0 0 3 0x14200 pgdaemon pagedaemon 49857 8656 0 0 3 0x14200 bored viomb 37088 357824 0 0 3 0x40014200 acpi0 acpi0 60498 34630 0 0 7 0x40014200 idle1 15369 329243 0 0 3 0x14200 bored softnet 73037 25258 0 0 3 0x14200 bored systqmp 44755 163735 0 0 3 0x14200 bored systq 48165 112038 0 0 3 0x40014200 bored softclock 48033 204007 0 0 3 0x40014200 idle0 1 64179 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 12578 (syz-executor.5) thread 0xffff800022c677b0 (258806) exclusive rwlock vcpu r = 0 (0xffff80002e37cbb0) #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 10224 6591K 7785K 78643K 65231 0 pcb 13 20K 23K 78643K 3568 0 rtable 284 22K 24K 78643K 6584 0 ifaddr 111 30K 34K 78643K 2571 0 sysctl 3 1K 3K 78643K 6 0 counters 58 35K 36K 78643K 646 0 ioctlops 0 0K 4K 78643K 6918 0 iov 0 0K 28K 78643K 23792 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1620 101K 102K 78643K 16532 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 424 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 428 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 16 57K 93K 78643K 24509 0 sigio 0 0K 0K 78643K 165 0 proc 71 87K 136K 78643K 3784 0 subproc 104 13K 21K 78643K 1247 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1247 0 in_multi 104 6K 7K 78643K 1959 0 ether_multi 1 0K 0K 78643K 283 0 mrt 1 0K 0K 78643K 108 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 4660 0 pfkey data 0 0K 0K 78643K 8 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 716 1429K 1430K 78643K 309121 0 UVM aobj 102 3K 3K 78643K 124 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1491 0 NDP 13 0K 2K 78643K 552 0 temp 156 4741K 8817K 78643K 358215 0 kqueue 10 14K 24K 78643K 1067 0 SYN cache 2 8K 16K 78643K 3 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 1515 0 1512 25 24 1 6 0 8 0 rtentry 112 1431 0 1332 10 7 3 4 0 8 0 unpcb 136 11491 0 11474 123 120 3 6 0 8 2 syncache 296 83 0 83 20 20 0 1 0 8 0 tcpqe 32 16 0 16 7 7 0 1 0 8 0 tcpcb 736 10119 0 10114 262 261 1 13 0 8 0 arp 120 206 0 190 1 0 1 1 0 8 0 inpcb 304 27230 0 27223 330 329 1 16 0 8 0 rttmr 72 35 0 35 7 7 0 1 0 8 0 nd6 48 366 0 342 1 0 1 1 0 8 0 pkpcb 40 148 0 148 14 14 0 1 0 8 0 kcovpl 48 90 0 82 1 0 1 1 0 8 0 ppxss 1248 41 0 41 12 12 0 1 0 8 0 pfstscr 40 147 0 147 17 17 0 1 0 8 0 pffrag 232 142 0 142 19 19 0 1 0 482 0 pffrnode 88 142 0 142 19 19 0 1 0 8 0 pffrent 40 3565 0 3565 19 19 0 1 0 8 0 pfosfp 40 1518 0 1089 5 0 5 5 0 8 0 pfosfpen 112 1518 0 790 21 0 21 21 0 8 0 pfrke_plain 168 8 0 8 1 1 0 1 0 8 0 pfrktable 1344 1139 0 1109 18 15 3 3 0 8 0 pftag 88 26 0 8 1 0 1 1 0 8 0 pfqueue 264 3 0 0 1 0 1 1 0 8 0 pfstitem 24 44 0 42 1 0 1 1 0 8 0 pfstkey 112 304 0 302 1 0 1 1 0 8 0 pfstate 320 168 0 166 2 1 1 2 0 8 0 pfrule 1360 1189 0 873 31 4 27 27 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 5678 0 5221 47 18 29 33 0 8 0 art_table 32 5679 0 5221 5 1 4 5 0 8 0 art_node 16 1346 0 1260 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 4 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 423 0 413 1 0 1 1 0 8 0 shmpl 112 121 0 22 4 1 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 31939 0 30421 96 0 96 96 0 8 0 ffsino 272 31939 0 30421 102 0 102 102 0 8 0 nchpl 144 63707 0 62079 63 0 63 63 0 8 0 uvmvnodes 80 6506 0 0 133 0 133 133 0 8 0 vnodes 224 6506 0 0 383 0 383 383 0 8 0 namei 1024 244837 0 244837 6 5 1 2 0 8 1 percpumem 16 335 0 294 1 0 1 1 0 8 0 vcpupl 2048 370 0 2 46 0 46 46 0 8 0 vmpool 560 439 0 71 28 1 27 27 0 8 0 pfiaddrpl 120 454 0 305 7 2 5 5 0 8 0 scsiplug 72 15 0 15 5 5 0 1 0 8 0 scxspl 216 187253 0 187253 26 25 1 8 0 8 1 plimitpl 152 2099 0 2084 1 0 1 1 0 8 0 sigapl 424 24699 0 24654 10 4 6 8 0 8 0 futexpl 64 242319 0 242315 2 1 1 1 0 8 0 knotepl 112 191 0 0 4 0 4 4 0 8 0 kqueuepl 216 4626 0 4614 106 105 1 8 0 8 0 pipepl 336 4168 0 4140 115 112 3 13 0 8 0 fdescpl 496 24641 0 24612 5 1 4 5 0 8 0 filepl 152 172107 0 171859 283 270 13 23 0 8 0 lockfpl 104 7559 0 7555 18 17 1 2 0 8 0 lockfspl 48 2229 0 2226 1 0 1 1 0 8 0 sessionpl 144 107 0 90 1 0 1 1 0 8 0 pgrppl 48 200 0 183 1 0 1 1 0 8 0 ucredpl 96 15673 0 15657 1 0 1 1 0 8 0 zombiepl 144 24654 0 24653 3 2 1 1 0 8 0 processpl 1064 24699 0 24653 5 0 5 5 0 8 0 procpl 672 65777 0 65716 27 21 6 9 0 8 0 srpgc 96 52 0 52 18 18 0 1 0 8 0 sosppl 168 198 0 198 29 29 0 1 0 8 0 sockpl 480 40483 0 40456 819 806 13 34 0 8 9 mcl64k 65536 26 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 1 2 3 0 8 0 mcl12k 12288 28 0 0 2 0 2 2 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 15 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 11 0 0 1 0 1 1 0 8 0 mcl2k 2048 435 0 0 22 3 19 22 0 8 0 mtagpl 96 1445 0 0 22 1 21 21 0 8 0 mbufpl 256 7249 0 0 429 0 429 429 0 8 0 bufpl 288 42862 0 36356 467 2 465 465 0 8 0 anonpl 24 24081966 0 24046637 1179 915 264 362 0 186 0 amapchunkpl 152 818994 0 817779 212 162 50 64 0 158 0 amappl16 200 1068273 0 1066944 3570 3474 96 141 0 8 0 amappl15 192 7507 0 7499 1 0 1 1 0 8 0 amappl14 184 2671 0 2666 2 1 1 1 0 8 0 amappl13 176 2251 0 2249 1 0 1 1 0 8 0 amappl12 168 3766 0 3764 2 1 1 1 0 8 0 amappl11 160 1542 0 1527 1 0 1 1 0 8 0 amappl10 152 3704 0 3693 1 0 1 1 0 8 0 amappl9 144 2607 0 2602 1 0 1 1 0 8 0 amappl8 136 4422 0 4242 8 1 7 7 0 8 0 amappl7 128 2225 0 2210 1 0 1 1 0 8 0 amappl6 120 2594 0 2557 4 2 2 2 0 8 0 amappl5 112 24085 0 24062 1 0 1 1 0 8 0 amappl4 104 5384 0 5348 10 9 1 2 0 8 0 amappl3 96 6785 0 6770 1 0 1 1 0 8 0 amappl2 88 6323 0 6242 3 0 3 3 0 8 0 amappl1 80 440738 0 440158 19 6 13 19 0 8 0 amappl 88 306603 0 306231 12 3 9 10 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 72 123 0 22 2 0 2 2 0 8 0 uaddrrnd 24 25080 0 24683 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 25080 0 24683 3 0 3 3 0 8 0 vmmpekpl 168 173407 0 173318 4 0 4 4 0 8 0 vmmpepl 168 3263229 0 3259078 844 642 202 255 0 357 0 vmsppl 368 25079 0 24683 37 0 37 37 0 8 0 rwobjpl 56 1540914 0 1531727 328 186 142 147 0 8 0 pdppl 4096 50167 0 49734 1086 649 437 437 0 8 4 pvpl 32 29402895 0 29377281 1359 1055 304 425 0 265 0 pmappl 248 25079 0 24683 25 0 25 25 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 2764 0 1057 49 0 49 49 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff80002e3ff560) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4297 vmmioctl(a00,c0205602,ffff80002e3ff560,1,ffff800022c677b0) at vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 VOP_IOCTL(fffffd806e0dac90,c0205602,ffff80002e3ff560,1,fffffd807f7d83c0,ffff800022c677b0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8057ec4e50,c0205602,ffff80002e3ff560,ffff800022c677b0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800022c677b0,ffff80002e3ff678,ffff80002e3ff6d0) at sys_ioctl+0x4a2 syscall(ffff80002e3ff740) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3ff740) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfcf753304b0, 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5