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(ffff800025ff7c60) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4462 vmmioctl(a00,c0205602,ffff800025ff7c60,1,ffff800025fc6548) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:656 VOP_IOCTL(fffffd807074bc90,c0205602,ffff800025ff7c60,1,fffffd807f7d75a0,ffff800025fc6548) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80622e0000,c0205602,ffff800025ff7c60,ffff800025fc6548) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800025fc6548,ffff800025ff7d78,ffff800025ff7dd0) at sys_ioctl+0x4a2 syscall(ffff800025ff7e40) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800025ff7e40) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf52978ac120, count: -8 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff80002123a638 rbp 0xffff800025ff79c0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0x8000000000 r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0xf2859d4edd7ae43f r11 0x68437e1e6259649b r12 0xffffffff829606f0 dt_prov_static r13 0x246 r14 0xffff80002123a000 r15 0xffff800025ff7c60 rip 0xffffffff817c3be0 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff800025ff7816 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor.0) pid=311842 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff800025fc62a8,0xffff800025fc7518 process=0xffff800025f26160 user=0xffff800025ff2000, vmspace=0xfffffd805e623740 estcpu=33, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 97693 219046 34525 0 2 0 syz-executor.6 97693 27025 34525 0 3 0x4000080 fsleep syz-executor.6 22894 176542 74324 60928 2 0x10 syz-executor.5 22894 374400 74324 60928 3 0x4000090 fsleep syz-executor.5 47793 97337 113 0 2 0 syz-executor.0 *47793 311842 113 0 7 0x4000000 syz-executor.0 70404 53673 73465 0 2 0 syz-executor.2 70404 88257 73465 0 3 0x4000080 fsleep syz-executor.2 70404 319673 73465 0 3 0x4000080 fsleep syz-executor.2 764 317051 3352 0 2 0 syz-executor.1 764 450661 3352 0 3 0x4000080 fsleep syz-executor.1 23781 43080 68024 0 2 0 syz-executor.3 23781 144236 68024 0 3 0x4000080 fsleep syz-executor.3 73465 27611 88878 0 3 0x82 nanoslp syz-executor.2 26236 411435 88878 0 3 0x82 nanoslp syz-executor.4 113 439991 88878 0 3 0x82 nanoslp syz-executor.0 9005 137849 88878 0 3 0x82 nanoslp syz-executor.7 19180 226203 0 0 3 0x14200 acct acct 68024 112581 88878 0 3 0x82 nanoslp syz-executor.3 34525 45618 88878 0 3 0x82 nanoslp syz-executor.6 3352 53034 88878 0 3 0x82 nanoslp syz-executor.1 74324 434232 88878 0 3 0x82 nanoslp syz-executor.5 18958 114547 1 0 3 0x100083 ttyin getty 59375 148240 0 0 3 0x14200 bored sosplice 88878 240187 97820 0 3 0x82 kqread syz-fuzzer 88878 432160 97820 0 3 0x4000082 thrsleep syz-fuzzer 88878 466614 97820 0 3 0x4000082 thrsleep syz-fuzzer 88878 452821 97820 0 3 0x4000082 thrsleep syz-fuzzer 88878 9081 97820 0 3 0x4000082 thrsleep syz-fuzzer 88878 346096 97820 0 3 0x4000082 thrsleep syz-fuzzer 88878 471381 97820 0 3 0x4000082 thrsleep syz-fuzzer 88878 368569 97820 0 3 0x4000082 thrsleep syz-fuzzer 88878 187692 97820 0 3 0x4000082 thrsleep syz-fuzzer 97820 73830 35136 0 3 0x10008a sigsusp ksh 35136 191194 92735 0 3 0x9a kqread sshd 92735 184856 1 0 3 0x88 kqread sshd 24028 72257 66537 74 3 0x1100092 bpf pflogd 66537 314653 1 0 3 0x80 netio pflogd 73115 495634 62821 73 3 0x1100090 kqread syslogd 62821 431968 1 0 3 0x100082 netio syslogd 87532 270399 1 0 3 0x100080 kqread resolvd 18861 17911 7605 77 3 0x100092 kqread dhcpleased 66712 59555 7605 77 3 0x100092 kqread dhcpleased 7605 419167 1 0 3 0x80 kqread dhcpleased 53436 211663 0 0 3 0x14200 bored smr 41058 225777 0 0 2 0x14200 zerothread 67608 174429 0 0 3 0x14200 aiodoned aiodoned 25780 192872 0 0 3 0x14200 syncer update 24618 77276 0 0 3 0x14200 cleaner cleaner 12693 265005 0 0 3 0x14200 reaper reaper 11175 507229 0 0 3 0x14200 pgdaemon pagedaemon 4370 267851 0 0 3 0x14200 bored viomb 10365 11552 0 0 3 0x40014200 acpi0 acpi0 74191 427304 0 0 7 0x40014200 idle1 5839 109379 0 0 3 0x14200 bored softnet 87321 308506 0 0 3 0x14200 bored softnet 69201 436322 0 0 3 0x14200 bored softnet 20469 40468 0 0 3 0x14200 bored softnet 67242 483137 0 0 3 0x14200 bored systqmp 49039 140966 0 0 3 0x14200 bored systq 50158 361829 0 0 3 0x40014200 bored softclock 31985 225850 0 0 3 0x40014200 idle0 1 524220 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 47793 (syz-executor.0) thread 0xffff800025fc6548 (311842) exclusive rwlock vcpu r = 0 (0xffff80002123a3b0) #0 witness_lock+0x44d #1 vm_run+0x2e0 sys/arch/amd64/amd64/vmm.c:4429 #2 vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:656 #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 10226 6654K 10861K 78643K 73627 0 pcb 13 26K 30K 78643K 5423 0 rtable 204 18K 20K 78643K 6679 0 ifaddr 97 28K 31K 78643K 2270 0 sysctl 3 1K 2K 78643K 7 0 counters 52 35K 36K 78643K 680 0 ioctlops 0 0K 4K 78643K 8789 0 iov 0 0K 32K 78643K 3414 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1710 107K 107K 78643K 19991 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 17K 78643K 315 0 VM map 2 1K 1K 78643K 2 0 sem 12 20K 36K 78643K 20 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 86K 78643K 30205 0 sigio 0 0K 0K 78643K 638 0 proc 78 92K 140K 78643K 5492 0 subproc 104 6K 6K 78643K 1867 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1628 0 in_multi 68 4K 6K 78643K 1886 0 ether_multi 1 0K 0K 78643K 133 0 mrt 2 0K 0K 78643K 96 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 2K 78643K 7535 0 pfkey data 0 0K 0K 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 626 1370K 1378K 78643K 174697 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1327 0 NDP 12 0K 2K 78643K 620 0 temp 132 4736K 21120K 78643K 310815 0 kqueue 12 18K 26K 78643K 1952 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 1761 0 1758 24 23 1 3 0 8 0 rtentry 112 2122 0 2041 7 3 4 4 0 8 0 unpcb 136 19832 0 19817 196 193 3 9 0 8 2 syncache 296 6 0 6 2 2 0 1 0 8 0 tcpqe 32 371 0 371 2 2 0 1 0 8 0 tcpcb 736 15275 0 15271 406 405 1 24 0 8 0 arp 120 434 0 420 2 1 1 2 0 8 0 inpcb 312 57718 0 57710 534 533 1 26 0 8 0 nd6 48 471 0 452 1 0 1 1 0 8 0 pkpcb 40 273 0 273 26 26 0 1 0 8 0 kcovpl 48 139 0 131 1 0 1 1 0 8 0 ppxss 1248 107 0 107 23 23 0 1 0 8 0 pfstscr 40 85 0 85 3 3 0 1 0 8 0 pffrag 232 278 0 278 11 11 0 1 0 482 0 pffrnode 88 273 0 273 11 11 0 1 0 8 0 pffrent 40 618 0 618 12 12 0 1 0 8 0 pfosfp 40 1434 0 1010 5 0 5 5 0 8 0 pfosfpen 112 1434 0 719 21 0 21 21 0 8 0 pfrktable 1344 67 0 59 2 1 1 2 0 8 0 pftag 88 7 0 0 1 0 1 1 0 8 0 pfstitem 24 71 0 69 1 0 1 1 0 8 0 pfstkey 112 233 0 231 1 0 1 1 0 8 0 pfstate 336 152 0 150 3 2 1 3 0 8 0 pfrule 1360 392 0 352 6 2 4 4 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 8294 0 7974 90 66 24 31 0 8 0 art_table 32 8296 0 7975 5 1 4 5 0 8 0 art_node 16 2111 0 2043 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 12 0 2 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 39956 0 38408 97 0 97 97 0 8 0 ffsino 272 39956 0 38408 104 0 104 104 0 8 0 nchpl 144 79028 0 77371 63 0 63 63 0 8 0 uvmvnodes 80 7242 0 0 148 0 148 148 0 8 0 vnodes 224 7242 0 0 426 0 426 426 0 8 0 namei 1024 288975 0 288975 6 5 1 2 0 8 1 percpumem 16 352 0 314 1 0 1 1 0 8 0 vcpupl 2048 431 0 2 54 0 54 54 0 8 0 vmpool 560 514 0 85 31 0 31 31 0 8 0 pfiaddrpl 120 23 0 16 1 0 1 1 0 8 0 kstatmem 264 652 0 628 6 4 2 3 0 8 0 scsiplug 72 9 0 9 3 3 0 1 0 8 0 scxspl 216 222690 0 222690 27 26 1 8 0 8 1 plimitpl 152 3772 0 3757 1 0 1 1 0 8 0 sigapl 424 30274 0 30224 9 2 7 8 0 8 0 futexpl 64 298092 0 298086 4 3 1 1 0 8 0 knotepl 120 1863 0 0 19 1 18 19 0 8 0 kqueuepl 216 7900 0 7892 131 130 1 8 0 8 0 pipepl 336 5078 0 5050 138 135 3 13 0 8 0 fdescpl 496 30229 0 30199 9 5 4 5 0 8 0 filepl 152 226020 0 225744 351 337 14 23 0 8 3 lockfpl 104 8606 0 8604 18 16 2 2 0 8 1 lockfspl 48 2236 0 2234 1 0 1 1 0 8 0 sessionpl 144 157 0 140 1 0 1 1 0 8 0 pgrppl 48 298 0 281 1 0 1 1 0 8 0 ucredpl 96 23814 0 23796 1 0 1 1 0 8 0 zombiepl 144 30226 0 30224 1 0 1 1 0 8 0 processpl 1064 30274 0 30224 5 0 5 5 0 8 0 procpl 672 82883 0 82818 37 30 7 9 0 8 0 srpgc 96 218 0 218 38 38 0 1 0 8 0 sosppl 168 7691 0 7691 11 10 1 1 0 8 1 sockpl 480 81156 0 81130 1482 1470 12 45 0 8 8 mcl64k 65536 42 0 0 5 2 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 65 0 0 2 0 2 2 0 8 0 mcl9k 9216 33 0 0 3 1 2 2 0 8 0 mcl8k 8192 66 0 0 6 3 3 6 0 8 0 mcl4k 4096 107 0 0 9 6 3 9 0 8 0 mcl2k2 2112 15 0 0 1 0 1 1 0 8 0 mcl2k 2048 550 0 0 33 0 33 33 0 8 0 mtagpl 96 2100 0 0 30 0 30 30 0 8 0 mbufpl 256 5447 0 0 300 0 300 300 0 8 0 bufpl 288 46737 0 39494 518 0 518 518 0 8 0 anonpl 24 5702654 0 5684530 281 157 124 140 0 186 0 amapchunkpl 152 502987 0 502208 116 81 35 44 0 158 0 amappl16 200 72578 0 71942 218 182 36 47 0 8 0 amappl15 192 4432 0 4426 1 0 1 1 0 8 0 amappl14 184 4093 0 4082 1 0 1 1 0 8 0 amappl13 176 3782 0 3780 1 0 1 1 0 8 0 amappl12 168 3763 0 3760 1 0 1 1 0 8 0 amappl11 160 3841 0 3820 3 1 2 2 0 8 0 amappl10 152 3168 0 3157 1 0 1 1 0 8 0 amappl9 144 3807 0 3805 1 0 1 1 0 8 0 amappl8 136 8796 0 8625 7 1 6 6 0 8 0 amappl7 128 6235 0 6212 1 0 1 1 0 8 0 amappl6 120 4389 0 4360 2 1 1 2 0 8 0 amappl5 112 26151 0 26132 1 0 1 1 0 8 0 amappl4 104 10744 0 10695 2 0 2 2 0 8 0 amappl3 96 93490 0 93435 2 0 2 2 0 8 0 amappl2 88 35925 0 35846 3 1 2 3 0 8 0 amappl1 80 713767 0 713070 39 24 15 20 0 8 0 amappl 88 171469 0 171167 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 30743 0 30284 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 30743 0 30284 3 0 3 3 0 8 0 vmmpekpl 168 204034 0 203944 5 0 5 5 0 8 0 vmmpepl 168 2967870 0 2963899 553 369 184 201 0 357 0 vmsppl 368 30742 0 30284 43 1 42 42 0 8 0 rwobjpl 56 707198 0 697882 169 36 133 134 0 8 0 pdppl 4096 61493 0 60997 1967 1469 498 498 0 8 2 pvpl 32 11322553 0 11299540 630 418 212 253 0 265 12 pmappl 248 30742 0 30284 30 1 29 29 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 4331 0 2633 50 1 49 49 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff800025ff7c60) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4462 vmmioctl(a00,c0205602,ffff800025ff7c60,1,ffff800025fc6548) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:656 VOP_IOCTL(fffffd807074bc90,c0205602,ffff800025ff7c60,1,fffffd807f7d75a0,ffff800025fc6548) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80622e0000,c0205602,ffff800025ff7c60,ffff800025fc6548) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800025fc6548,ffff800025ff7d78,ffff800025ff7dd0) at sys_ioctl+0x4a2 syscall(ffff800025ff7e40) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800025ff7e40) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf52978ac120, 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