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(ffff8000212962f0) at vm_run+0x215 sys/arch/amd64/amd64/vmm.c:4562 vmmioctl(a00,c0205602,ffff8000212962f0,1,ffff80002130bce0) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:685 VOP_IOCTL(fffffd806e549ca8,c0205602,ffff8000212962f0,1,fffffd807f7d7750,ffff80002130bce0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806cad3e58,c0205602,ffff8000212962f0,ffff80002130bce0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002130bce0,ffff800021296408,ffff800021296450) at sys_ioctl+0x4a2 syscall(ffff8000212964d0) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff8000212964d0) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5ae40da16a0, count: -8 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800026205e40 rbp 0xffff800021296040 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0x100000000 r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0x870e149f3b16282d r11 0xef790f2de5debfaf r12 0xffff800026205ba0 r13 0 r14 0xffff800026205800 r15 0xffffffff82957ff0 cpu_info_full_primary+0x1ff0 rip 0xffffffff81370010 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff800021295e86 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor.0) pid=167092 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff80002132dcf0,0xffff8000247a6a90 process=0xffff8000ffff0c90 user=0xffff800021291000, vmspace=0xfffffd8078bf4d20 estcpu=32, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 52661 182321 97618 0 2 0 syz-executor.1 22530 389751 17302 0 2 0 syz-executor.5 20867 326190 70247 0 7 0 syz-executor.2 20867 461248 70247 0 3 0x4000080 netio syz-executor.2 30873 24629 11673 0 2 0 syz-executor.0 *30873 167092 11673 0 7 0x4000000 syz-executor.0 17302 294061 75204 0 3 0x82 nanoslp syz-executor.5 85278 374667 75204 0 2 0x2 syz-executor.7 70247 379430 75204 0 3 0x82 nanoslp syz-executor.2 62966 444461 75204 0 2 0x2 syz-executor.3 58119 87216 1 0 3 0x100083 ttyin getty 36447 251640 0 0 3 0x14200 acct acct 97618 5809 75204 0 2 0x2 syz-executor.1 44756 326684 75204 0 2 0x2 syz-executor.4 88697 462399 75204 0 3 0x82 nanoslp syz-executor.6 11673 260182 75204 0 3 0x82 nanoslp syz-executor.0 58274 207047 0 0 3 0x14280 nfsidl nfsio 233 222037 0 0 3 0x14280 nfsidl nfsio 32740 514069 0 0 3 0x14280 nfsidl nfsio 11621 187668 0 0 3 0x14280 nfsidl nfsio 10916 255301 0 0 3 0x14280 nfsidl nfsio 60085 24799 0 0 3 0x14280 nfsidl nfsio 73227 339893 0 0 3 0x14280 nfsidl nfsio 61832 186955 0 0 3 0x14280 nfsidl nfsio 46361 15665 0 0 3 0x14280 nfsidl nfsio 29450 457519 0 0 3 0x14280 nfsidl nfsio 1839 225340 0 0 3 0x14280 nfsidl nfsio 98076 508269 0 0 3 0x14280 nfsidl nfsio 14098 30005 0 0 3 0x14280 nfsidl nfsio 11789 465953 0 0 3 0x14280 nfsidl nfsio 86194 280304 0 0 3 0x14280 nfsidl nfsio 77919 393439 0 0 3 0x14280 nfsidl nfsio 19795 475611 0 0 3 0x14280 nfsidl nfsio 18069 25165 0 0 3 0x14280 nfsidl nfsio 33113 447268 0 0 3 0x14280 nfsidl nfsio 39275 376488 0 0 3 0x14280 nfsidl nfsio 95944 354843 0 0 3 0x14200 bored sosplice 75204 479374 40762 0 3 0x82 kqread syz-fuzzer 75204 49461 40762 0 3 0x4000082 nanoslp syz-fuzzer 75204 46436 40762 0 3 0x4000082 wait syz-fuzzer 75204 373301 40762 0 3 0x4000082 thrsleep syz-fuzzer 75204 366270 40762 0 3 0x4000082 thrsleep syz-fuzzer 75204 51062 40762 0 3 0x4000082 wait syz-fuzzer 75204 461976 40762 0 3 0x4000082 thrsleep syz-fuzzer 75204 367433 40762 0 3 0x4000082 thrsleep syz-fuzzer 75204 4934 40762 0 3 0x4000082 wait syz-fuzzer 75204 332361 40762 0 3 0x4000082 thrsleep syz-fuzzer 75204 268763 40762 0 3 0x4000082 wait syz-fuzzer 75204 497052 40762 0 3 0x4000082 wait syz-fuzzer 75204 150277 40762 0 3 0x4000082 wait syz-fuzzer 75204 236116 40762 0 3 0x4000082 wait syz-fuzzer 75204 429832 40762 0 3 0x4000082 nanoslp syz-fuzzer 75204 291644 40762 0 3 0x4000082 wait syz-fuzzer 40762 514938 58944 0 3 0x10008a sigsusp ksh 58944 509089 21341 0 3 0x9a kqread sshd 21341 350959 1 0 3 0x88 kqread sshd 87420 457268 1286 74 3 0x1100092 bpf pflogd 1286 130402 1 0 3 0x80 netio pflogd 47667 270017 67749 73 3 0x1100090 kqread syslogd 67749 188119 1 0 3 0x100082 netio syslogd 89869 280424 1 0 3 0x100080 kqread resolvd 7946 52433 65536 77 3 0x100092 kqread dhcpleased 19211 135107 65536 77 3 0x100092 kqread dhcpleased 65536 412226 1 0 3 0x80 kqread dhcpleased 60594 47387 0 0 3 0x14200 bored smr 28301 391332 0 0 2 0x14200 zerothread 54118 269934 0 0 3 0x14200 aiodoned aiodoned 37286 333871 0 0 3 0x14200 syncer update 66280 365904 0 0 3 0x14200 cleaner cleaner 14822 50584 0 0 3 0x14200 reaper reaper 424 200753 0 0 3 0x14200 pgdaemon pagedaemon 73202 250659 0 0 3 0x14200 bored viomb 46409 421726 0 0 3 0x40014200 acpi0 acpi0 4520 110343 0 0 3 0x40014200 idle1 21209 355395 0 0 3 0x14200 bored softnet 22929 451759 0 0 3 0x14200 bored softnet 54900 185435 0 0 2 0x14200 softnet 74859 421713 0 0 3 0x14200 bored softnet 87863 212062 0 0 3 0x14200 bored systqmp 83221 203976 0 0 3 0x14200 bored systq 17808 390347 0 0 3 0x40014200 bored softclock 66689 147686 0 0 3 0x40014200 idle0 1 42734 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 30873 (syz-executor.0) thread 0xffff80002130bce0 (167092) exclusive rwlock vcpu r = 0 (0xffff800026205bb0) #0 witness_lock+0x44d #1 vm_run+0x100 sys/arch/amd64/amd64/vmm.c:4536 #2 vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:685 #3 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 #4 vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 #5 sys_ioctl+0x4a2 #6 syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] #6 syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10237 6520K 7100K 78643K 29404 0 pcb 13 20K 24K 78643K 2200 0 rtable 163 18K 20K 78643K 2247 0 ifaddr 104 21K 25K 78643K 1010 0 sysctl 3 1K 1K 78643K 7 0 counters 52 35K 36K 78643K 524 0 ioctlops 0 0K 8K 78643K 4350 0 iov 1 8K 32K 78643K 1571 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1456 91K 91K 78643K 8470 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 125 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1265 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 93K 78643K 13438 0 sigio 0 0K 0K 78643K 106 0 proc 73 91K 152K 78643K 2047 0 subproc 104 6K 6K 78643K 585 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 578 0 in_multi 53 3K 7K 78643K 852 0 ether_multi 1 0K 0K 78643K 76 0 mrt 1 0K 0K 78643K 78 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 235 1049K 1049K 78643K 235 0 exec 0 0K 2K 78643K 2915 0 pfkey data 0 0K 0K 78643K 10 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 62K 78643K 8 0 UVM amap 553 1141K 1146K 78643K 81848 0 UVM aobj 131 4K 4K 78643K 140 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 305 0 NDP 18 0K 1K 78643K 304 0 temp 154 4727K 5751K 78643K 157887 0 kqueue 12 18K 30K 78643K 1214 0 SYN cache 2 16K 24K 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 1018 0 1015 17 16 1 3 0 8 0 rtentry 112 743 0 690 4 1 3 4 0 8 0 unpcb 144 6330 0 6313 76 75 1 6 0 8 0 syncache 296 59 0 59 17 17 0 1 0 8 0 tcpqe 32 21 0 21 8 8 0 1 0 8 0 tcpcb 768 3543 0 3537 139 131 8 15 0 8 6 arp 120 118 0 109 1 0 1 1 0 8 0 ipq 40 11 0 11 4 4 0 1 0 8 0 ipqe 40 26 0 26 4 4 0 1 0 8 0 inpcb 320 18960 0 18935 189 178 11 14 0 8 8 nd6 48 163 0 152 1 0 1 1 0 8 0 pkpcb 40 118 0 118 11 11 0 1 0 8 0 kcovpl 48 45 0 37 1 0 1 1 0 8 0 ppxss 1256 168 0 168 18 18 0 1 0 8 0 pffrag 232 91 0 91 2 2 0 1 0 482 0 pffrnode 88 91 0 91 2 2 0 1 0 8 0 pffrent 40 337 0 337 2 2 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 pfrktable 1344 8 0 5 2 1 1 1 0 8 0 pfanchor 1280 304 0 16 25 0 25 25 0 8 0 pftag 88 7 0 2 1 0 1 1 0 8 0 pfqueue 264 3 0 3 1 1 0 1 0 8 0 pfstitem 24 38 0 36 1 0 1 1 0 8 0 pfstkey 120 38 0 36 1 0 1 1 0 8 0 pfstate 336 38 0 36 3 2 1 3 0 8 0 pfrule 1360 76 0 66 2 1 1 2 0 8 0 rttmr 136 30 0 30 11 11 0 1 0 8 0 art_heap8 4096 6 0 4 4 2 2 2 0 8 0 art_heap4 256 3164 0 2923 43 20 23 30 0 8 4 art_table 32 3170 0 2927 4 0 4 4 0 8 0 art_node 16 732 0 688 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 0 1 0 1 1 0 8 0 semupl 112 6 0 6 1 1 0 1 0 8 0 semapl 112 1263 0 1253 1 0 1 1 0 8 0 shmpl 112 137 0 9 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 19690 0 18190 95 0 95 95 0 8 0 ffsino 272 19690 0 18190 101 0 101 101 0 8 0 nchpl 144 39809 0 38167 63 0 63 63 0 8 0 rtmask 32 6 0 6 4 4 0 1 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 134467 0 134467 6 5 1 2 0 8 1 percpumem 16 274 0 236 1 0 1 1 0 8 0 vcpupl 2048 140 0 0 18 0 18 18 0 8 0 vmpool 568 269 0 129 11 1 10 10 0 8 0 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 kstatmem 264 388 0 352 4 1 3 3 0 8 0 scsiplug 72 22 0 22 7 7 0 1 0 8 0 scxspl 216 103914 0 103914 47 46 1 8 0 8 1 plimitpl 152 1471 0 1456 1 0 1 1 0 8 0 sigapl 424 13736 0 13669 12 4 8 8 0 8 0 futexpl 64 115819 0 115819 1 0 1 1 0 8 1 knotepl 120 840 0 0 17 0 17 17 0 8 0 kqueuepl 216 2454 0 2446 35 34 1 5 0 8 0 pipepl 320 2738 0 2710 61 58 3 8 0 8 0 fdescpl 496 13655 0 13628 5 1 4 5 0 8 0 filepl 152 94566 0 94325 128 113 15 20 0 8 5 lockfpl 104 4177 0 4175 6 5 1 2 0 8 0 lockfspl 48 1434 0 1432 1 0 1 1 0 8 0 sessionpl 144 62 0 45 1 0 1 1 0 8 0 pgrppl 48 154 0 137 1 0 1 1 0 8 0 ucredpl 104 12646 0 12626 1 0 1 1 0 8 0 zombiepl 144 13670 0 13669 4 3 1 1 0 8 0 processpl 1064 13736 0 13669 6 1 5 5 0 8 0 procpl 672 39242 0 39158 23 14 9 10 0 8 1 srpgc 96 50 0 50 16 15 1 1 0 8 1 sosppl 168 154 0 154 19 19 0 1 0 8 0 sockpl 488 26534 0 26489 420 405 15 31 0 8 8 mcl64k 65536 25 0 0 3 0 3 3 0 8 0 mcl16k 16384 26 0 0 4 2 2 3 0 8 0 mcl12k 12288 33 0 0 2 0 2 2 0 8 0 mcl9k 9216 33 0 0 2 0 2 2 0 8 0 mcl8k 8192 82 0 0 10 6 4 10 0 8 0 mcl4k 4096 73 0 0 7 3 4 5 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 496 0 0 42 10 32 42 0 8 0 mtagpl 96 615 0 0 11 0 11 11 0 8 0 mbufpl 256 1232 0 0 50 0 50 50 0 8 0 bufpl 288 26304 0 19975 453 0 453 453 0 8 0 anonpl 24 2804975 0 2778199 376 190 186 202 0 186 2 amapchunkpl 152 238318 0 237552 131 79 52 58 0 158 15 amappl16 200 44313 0 43019 235 165 70 81 0 8 1 amappl15 192 2326 0 2319 1 0 1 1 0 8 0 amappl14 184 1747 0 1740 1 0 1 1 0 8 0 amappl13 176 2018 0 2016 1 0 1 1 0 8 0 amappl12 168 2903 0 2891 1 0 1 1 0 8 0 amappl11 160 2340 0 2320 2 1 1 2 0 8 0 amappl10 152 1115 0 1108 1 0 1 1 0 8 0 amappl9 144 1806 0 1801 1 0 1 1 0 8 0 amappl8 136 3075 0 2932 7 2 5 5 0 8 0 amappl7 128 1817 0 1794 1 0 1 1 0 8 0 amappl6 120 1787 0 1766 2 1 1 2 0 8 0 amappl5 112 7560 0 7543 1 0 1 1 0 8 0 amappl4 104 7156 0 7122 2 0 2 2 0 8 0 amappl3 96 45138 0 45090 2 0 2 2 0 8 0 amappl2 88 5294 0 5244 3 1 2 2 0 8 0 amappl1 80 341176 0 340569 23 7 16 20 0 8 0 amappl 88 80198 0 79951 7 0 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 72 139 0 9 3 0 3 3 0 8 0 uaddrrnd 24 13926 0 13759 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 13926 0 13759 2 0 2 2 0 8 0 vmmpekpl 168 103141 0 103054 5 0 5 5 0 8 0 vmmpepl 168 1353652 0 1350010 323 136 187 187 0 357 7 vmsppl 368 13925 0 13759 17 1 16 16 0 8 0 rwobjpl 56 341846 0 333348 149 26 123 124 0 8 0 pdppl 4096 27859 0 27658 701 492 209 210 0 8 8 pvpl 32 5225486 0 5206142 440 238 202 242 0 265 0 pmappl 248 13925 0 13759 13 2 11 11 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1583 0 564 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(ffff8000212962f0) at vm_run+0x215 sys/arch/amd64/amd64/vmm.c:4562 vmmioctl(a00,c0205602,ffff8000212962f0,1,ffff80002130bce0) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:685 VOP_IOCTL(fffffd806e549ca8,c0205602,ffff8000212962f0,1,fffffd807f7d7750,ffff80002130bce0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806cad3e58,c0205602,ffff8000212962f0,ffff80002130bce0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002130bce0,ffff800021296408,ffff800021296450) at sys_ioctl+0x4a2 syscall(ffff8000212964d0) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff8000212964d0) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5ae40da16a0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> rc No such command