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(ffff80002715af80) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4297 vmmioctl(a00,c0205602,ffff80002715af80,1,ffff80002e3687e0) at vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 VOP_IOCTL(fffffd806ea55d70,c0205602,ffff80002715af80,1,fffffd807f7d8960,ffff80002e3687e0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80669e2e40,c0205602,ffff80002715af80,ffff80002e3687e0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002e3687e0,ffff80002715b098,ffff80002715b0f0) at sys_ioctl+0x4a2 syscall(ffff80002715b160) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002715b160) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x46b0a8b6380, count: -8 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff80002e377e38 rbp 0xffff80002715acf0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xa815172d40057a3b r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0xf6229b9ee222bebc r11 0xe2387c743e789b0f r12 0xffffffff8297f6c0 dt_prov_static r13 0x246 r14 0xffff80002e377800 r15 0xffff80002715af80 rip 0xffffffff820e9b40 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80002715ab46 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor.3) pid=313956 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=75, nice=20 forw=0xffffffffffffffff, list=0xffff80002e369500,0xffffffff82b6ef28 process=0xffff800026115d38 user=0xffff800027156000, vmspace=0xfffffd807d0a1170 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 1594 72727 92497 0 2 0 syz-executor.3 * 1594 313956 92497 0 7 0x4000000 syz-executor.3 38942 84687 66804 0 2 0 syz-executor.5 74287 169777 47739 0 2 0 syz-executor.6 23922 267570 81834 0 2 0 syz-executor.7 23922 258670 81834 0 3 0x4000080 fsleep syz-executor.7 17010 226301 34015 0 2 0 syz-executor.4 17010 175093 34015 0 3 0x4000080 fsleep syz-executor.4 57827 44528 25444 0 2 0 syz-executor.1 57827 470231 25444 0 3 0x4000080 fsleep syz-executor.1 57827 411044 25444 0 3 0x4000080 fsleep syz-executor.1 57827 137313 25444 0 3 0x4000080 fsleep syz-executor.1 92497 345409 6207 0 3 0x82 nanoslp syz-executor.3 47739 39199 6207 0 3 0x82 nanoslp syz-executor.6 49662 274862 6207 0 2 0x2 syz-executor.0 50112 459147 6207 0 2 0x2 syz-executor.2 39569 502723 0 0 3 0x14200 acct acct 34015 179581 6207 0 2 0x482 syz-executor.4 25444 117351 6207 0 3 0x82 nanoslp syz-executor.1 66804 436526 6207 0 3 0x82 nanoslp syz-executor.5 81834 483031 6207 0 3 0x82 nanoslp syz-executor.7 96864 514424 0 0 3 0x14280 nfsidl nfsio 2623 126796 0 0 3 0x14280 nfsidl nfsio 59455 87388 0 0 3 0x14280 nfsidl nfsio 62169 1958 0 0 3 0x14280 nfsidl nfsio 44390 414312 0 0 3 0x14280 nfsidl nfsio 4362 93892 0 0 3 0x14280 nfsidl nfsio 17481 308904 0 0 3 0x14280 nfsidl nfsio 62963 261616 0 0 3 0x14280 nfsidl nfsio 55338 246864 0 0 3 0x14280 nfsidl nfsio 77528 31989 0 0 3 0x14280 nfsidl nfsio 52265 437927 0 0 3 0x14280 nfsidl nfsio 40159 2045 0 0 3 0x14280 nfsidl nfsio 30344 163660 0 0 3 0x14280 nfsidl nfsio 27601 391745 0 0 3 0x14280 nfsidl nfsio 1843 316890 0 0 3 0x14280 nfsidl nfsio 2019 98145 0 0 3 0x14280 nfsidl nfsio 32333 310553 0 0 3 0x14280 nfsidl nfsio 11267 523771 0 0 3 0x14280 nfsidl nfsio 39416 513965 0 0 3 0x14280 nfsidl nfsio 43806 432823 0 0 3 0x14280 nfsidl nfsio 94872 166345 0 0 3 0x14200 bored sosplice 6207 437075 68749 0 3 0x82 thrsleep syz-fuzzer 6207 276325 68749 0 3 0x4000082 nanoslp syz-fuzzer 6207 451258 68749 0 3 0x4000082 thrsleep syz-fuzzer 6207 320474 68749 0 3 0x4000082 thrsleep syz-fuzzer 6207 519779 68749 0 3 0x4000082 thrsleep syz-fuzzer 6207 112137 68749 0 3 0x4000082 kqread syz-fuzzer 6207 66020 68749 0 3 0x4000082 thrsleep syz-fuzzer 6207 378589 68749 0 3 0x4000082 thrsleep syz-fuzzer 6207 353482 68749 0 3 0x4000082 thrsleep syz-fuzzer 68749 476309 89996 0 3 0x10008a sigsusp ksh 89996 363015 11740 0 3 0x9a poll sshd 27740 290453 1 0 3 0x100083 ttyin getty 11740 178927 1 0 3 0x88 poll sshd 75214 172034 24434 74 3 0x100092 bpf pflogd 24434 82776 1 0 3 0x80 netio pflogd 6752 516214 77407 73 3 0x100090 kqread syslogd 77407 473105 1 0 3 0x100082 netio syslogd 82376 162314 1 0 3 0x100080 kqread resolvd 81010 246115 52770 77 3 0x100092 kqread dhcpleased 13283 444200 52770 77 3 0x100092 kqread dhcpleased 52770 93507 1 0 3 0x80 kqread dhcpleased 97755 136029 0 0 3 0x14200 bored smr 8753 267253 0 0 2 0x14200 zerothread 32228 61342 0 0 3 0x14200 aiodoned aiodoned 72924 163492 0 0 3 0x14200 syncer update 85200 309508 0 0 3 0x14200 cleaner cleaner 43003 172256 0 0 3 0x14200 reaper reaper 76989 483727 0 0 3 0x14200 pgdaemon pagedaemon 76727 401927 0 0 3 0x14200 bored viomb 59346 440408 0 0 3 0x40014200 acpi0 acpi0 62767 335992 0 0 7 0x40014200 idle1 24373 417308 0 0 3 0x14200 bored softnet 81562 247583 0 0 3 0x14200 bored systqmp 1875 437206 0 0 3 0x14200 bored systq 12545 511804 0 0 3 0x40014200 bored softclock 66861 310061 0 0 3 0x40014200 idle0 1 265657 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 1594 (syz-executor.3) thread 0xffff80002e3687e0 (313956) exclusive rwlock vcpu r = 0 (0xffff80002e377bb0) #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 Process 49662 (syz-executor.0) thread 0xffff8000ffff5500 (274862) exclusive rrwlock inode r = 0 (0xfffffd806591d3d0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:677 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8066f94810) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10215 6507K 7396K 78643K 33209 0 pcb 14 20K 25K 78643K 2636 0 rtable 282 28K 29K 78643K 3550 0 ifaddr 93 23K 24K 78643K 1703 0 sysctl 3 1K 5K 78643K 71 0 counters 56 35K 35K 78643K 472 0 ioctlops 0 0K 4K 78643K 4260 0 iov 0 0K 28K 78643K 2912 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1466 92K 92K 78643K 9786 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 113 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1846 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 16 57K 85K 78643K 14382 0 sigio 0 0K 0K 78643K 237 0 proc 71 87K 136K 78643K 2293 0 subproc 104 13K 13K 78643K 710 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 767 0 in_multi 88 6K 7K 78643K 1078 0 ether_multi 1 0K 0K 78643K 171 0 mrt 3 0K 0K 78643K 63 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 271 1208K 1208K 78643K 271 0 exec 0 0K 2K 78643K 3079 0 pfkey data 0 0K 0K 78643K 4 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 485 515K 520K 78643K 178166 0 UVM aobj 131 8K 8K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 951 0 NDP 12 0K 2K 78643K 350 0 temp 143 4717K 4796K 78643K 120243 0 kqueue 10 14K 20K 78643K 847 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 1286 0 1283 17 16 1 5 0 8 0 rtentry 112 840 0 738 5 1 4 4 0 8 0 unpcb 136 11453 0 11437 111 106 5 8 0 8 4 syncache 296 43 0 43 13 13 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 910 0 910 8 8 0 2 0 8 0 tcpcb 736 4487 0 4482 159 151 8 13 0 8 7 arp 120 123 0 104 1 0 1 1 0 8 0 inpcb 304 18898 0 18888 206 197 9 15 0 8 8 rttmr 72 16 0 16 3 3 0 1 0 8 0 ip6q 72 8 0 8 3 3 0 1 0 8 0 ip6af 40 24 0 24 3 3 0 1 0 8 0 nd6 48 193 0 171 1 0 1 1 0 8 0 pkpcb 40 44 0 44 11 11 0 1 0 8 0 kcovpl 48 54 0 46 1 0 1 1 0 8 0 ppxss 1248 98 0 98 8 8 0 1 0 8 0 pfstscr 40 185 0 185 10 10 0 1 0 8 0 pffrag 232 92 0 91 12 11 1 1 0 482 0 pffrnode 88 92 0 91 12 11 1 1 0 8 0 pffrent 40 640 0 639 13 12 1 1 0 8 0 pfosfp 40 1433 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1433 0 714 21 0 21 21 0 8 0 pfrke_plain 168 96 0 96 3 3 0 1 0 8 0 pfrktable 1344 431 0 406 7 4 3 3 0 8 0 pftag 88 21 0 18 1 0 1 1 0 8 0 pfqueue 264 4 0 4 1 1 0 1 0 8 0 pfstitem 24 35 0 33 1 0 1 1 0 8 0 pfstkey 112 367 0 365 1 0 1 1 0 8 0 pfstate 320 195 0 193 2 1 1 2 0 8 0 pfrule 1360 751 0 665 12 4 8 8 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 3744 0 3268 56 22 34 39 0 8 0 art_table 32 3746 0 3269 5 0 5 5 0 8 0 art_node 16 806 0 716 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 3 1 0 1 1 0 8 0 semapl 112 1844 0 1834 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 20256 0 18784 93 0 93 93 0 8 0 ffsino 272 20256 0 18784 99 0 99 99 0 8 0 nchpl 144 39257 0 37632 63 0 63 63 0 8 0 rtmask 32 12 0 12 2 2 0 1 0 8 0 uvmvnodes 80 6811 0 0 139 0 139 139 0 8 0 vnodes 224 6811 0 0 401 0 401 401 0 8 0 namei 1024 161403 0 161403 9 8 1 2 0 8 1 percpumem 16 248 0 208 1 0 1 1 0 8 0 vcpupl 2048 105 0 0 14 0 14 14 0 8 0 vmpool 560 117 0 12 9 1 8 8 0 8 0 pfiaddrpl 120 307 0 261 2 0 2 2 0 8 0 scxspl 216 153084 0 153084 18 17 1 6 0 8 1 plimitpl 152 4232 0 4216 1 0 1 1 0 8 0 sigapl 424 14614 0 14549 9 1 8 8 0 8 0 futexpl 64 142437 0 142432 9 8 1 1 0 8 0 knotepl 112 160 0 0 5 1 4 4 0 8 0 kqueuepl 216 3356 0 3349 82 81 1 8 0 8 0 pipepl 336 3598 0 3569 115 107 8 8 0 8 5 fdescpl 496 14577 0 14548 8 4 4 5 0 8 0 filepl 152 125513 0 125266 201 182 19 23 0 8 8 lockfpl 104 5424 0 5422 20 19 1 3 0 8 0 lockfspl 48 1374 0 1372 1 0 1 1 0 8 0 sessionpl 144 70 0 53 1 0 1 1 0 8 0 pgrppl 48 147 0 130 1 0 1 1 0 8 0 ucredpl 96 22445 0 22433 1 0 1 1 0 8 0 zombiepl 144 14549 0 14549 2 1 1 1 0 8 1 processpl 1064 14614 0 14549 5 0 5 5 0 8 0 procpl 672 37700 0 37621 23 15 8 9 0 8 0 srpgc 96 28 0 28 6 6 0 1 0 8 0 sosppl 168 84 0 84 18 18 0 1 0 8 0 sockpl 480 31694 0 31663 569 556 13 41 0 8 8 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 12 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 338 0 0 40 3 37 40 0 8 0 mtagpl 96 940 0 0 11 1 10 11 0 8 0 mbufpl 256 2517 0 0 153 0 153 153 0 8 0 bufpl 288 41665 0 34852 487 0 487 487 0 8 0 anonpl 24 4152279 0 4123575 415 229 186 198 0 186 8 amapchunkpl 152 462582 0 461679 164 125 39 58 0 158 0 amappl16 200 43996 0 42785 180 112 68 76 0 8 0 amappl15 192 2417 0 2411 1 0 1 1 0 8 0 amappl14 184 108 0 103 1 0 1 1 0 8 0 amappl13 176 3447 0 3442 1 0 1 1 0 8 0 amappl12 168 1732 0 1729 3 2 1 1 0 8 0 amappl11 160 379 0 363 1 0 1 1 0 8 0 amappl10 152 2456 0 2440 1 0 1 1 0 8 0 amappl9 144 1653 0 1647 1 0 1 1 0 8 0 amappl8 136 4629 0 4484 6 0 6 6 0 8 0 amappl7 128 3191 0 3178 1 0 1 1 0 8 0 amappl6 120 1552 0 1519 3 1 2 2 0 8 0 amappl5 112 15100 0 15077 1 0 1 1 0 8 0 amappl4 104 2477 0 2444 2 0 2 2 0 8 0 amappl3 96 3866 0 3853 1 0 1 1 0 8 0 amappl2 88 5083 0 5031 3 1 2 3 0 8 0 amappl1 80 257508 0 256932 21 7 14 19 0 8 0 amappl 88 176637 0 176338 9 1 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 14694 0 14560 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 14694 0 14560 1 0 1 1 0 8 0 vmmpekpl 168 110586 0 110525 6 2 4 4 0 8 0 vmmpepl 168 1337289 0 1333757 505 329 176 182 0 357 13 vmsppl 368 14693 0 14560 15 2 13 13 0 8 0 rwobjpl 56 319482 0 310229 158 25 133 134 0 8 0 pdppl 4096 29395 0 29225 737 563 174 175 0 8 4 pvpl 32 7251808 0 7224623 698 455 243 320 0 265 11 pmappl 248 14693 0 14560 10 1 9 9 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 2004 0 863 34 1 33 33 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff80002715af80) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4297 vmmioctl(a00,c0205602,ffff80002715af80,1,ffff80002e3687e0) at vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 VOP_IOCTL(fffffd806ea55d70,c0205602,ffff80002715af80,1,fffffd807f7d8960,ffff80002e3687e0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80669e2e40,c0205602,ffff80002715af80,ffff80002e3687e0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002e3687e0,ffff80002715b098,ffff80002715b0f0) at sys_ioctl+0x4a2 syscall(ffff80002715b160) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002715b160) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x46b0a8b6380, 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