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(ffff8000278f3b40) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4295 vmmioctl(a00,c0205602,ffff8000278f3b40,1,ffff800027bd37b0) at vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 VOP_IOCTL(fffffd806e1e23d0,c0205602,ffff8000278f3b40,1,fffffd807f7d7780,ffff800027bd37b0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd800861c1e0,c0205602,ffff8000278f3b40,ffff800027bd37b0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800027bd37b0,ffff8000278f3c58,ffff8000278f3cb0) at sys_ioctl+0x4a2 syscall(ffff8000278f3d20) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000278f3d20) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x910aa920090, count: -8 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800027af7638 rbp 0xffff8000278f38b0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0x30656c69662f2e r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0x96dcf91355a48035 r11 0x78e964338871e9cb r12 0xffffffff82799ab0 dt_prov_static r13 0x246 r14 0xffff800027af7000 r15 0xffff8000278f3b40 rip 0xffffffff822713d0 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff8000278f3706 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor.3) pid=446943 stat=onproc flags process=0 proc=4000000 pri=82, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800027bd3a50,0xffffffff828720b8 process=0xffff800021206578 user=0xffff8000278ee000, vmspace=0xfffffd8074abae70 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 44027 317262 5630 0 2 0 syz-executor.3 *44027 446943 5630 0 7 0x4000000 syz-executor.3 51573 415852 19266 0 2 0 syz-executor.1 51573 215352 19266 0 3 0x4000080 fsleep syz-executor.1 5630 111099 74598 0 3 0x82 nanoslp syz-executor.3 69320 378601 74598 0 2 0x2 syz-executor.0 68432 320040 1 0 3 0x100083 ttyin getty 19266 235376 74598 0 3 0x82 nanoslp syz-executor.1 5865 167428 74598 0 2 0x2 syz-executor.2 3936 374629 0 0 3 0x14200 bored sosplice 74598 48120 73910 0 3 0x82 thrsleep syz-fuzzer 74598 493796 73910 0 3 0x4000082 nanoslp syz-fuzzer 74598 133525 73910 0 3 0x4000082 kqread syz-fuzzer 74598 416707 73910 0 3 0x4000082 thrsleep syz-fuzzer 74598 402710 73910 0 3 0x4000082 thrsleep syz-fuzzer 74598 146501 73910 0 3 0x4000082 thrsleep syz-fuzzer 74598 483479 73910 0 3 0x4000082 thrsleep syz-fuzzer 74598 523423 73910 0 3 0x4000082 thrsleep syz-fuzzer 74598 14000 73910 0 3 0x4000082 nanoslp syz-fuzzer 73910 84662 69993 0 3 0x10008a sigsusp ksh 69993 32684 78237 0 3 0x9a poll sshd 78237 254957 1 0 3 0x88 poll sshd 73571 92142 35942 74 3 0x100092 bpf pflogd 35942 295792 1 0 3 0x80 netio pflogd 24883 119111 83294 73 3 0x100090 kqread syslogd 83294 30478 1 0 3 0x100082 netio syslogd 62789 16785 1 0 3 0x100080 kqread resolvd 20317 481950 60863 77 3 0x100092 kqread dhcpleased 50775 498787 60863 77 3 0x100092 kqread dhcpleased 60863 207383 1 0 3 0x80 kqread dhcpleased 48544 352765 0 0 3 0x14200 bored smr 44623 402806 0 0 2 0x14200 zerothread 15716 396046 0 0 3 0x14200 aiodoned aiodoned 60427 183976 0 0 3 0x14200 syncer update 64379 269236 0 0 3 0x14200 cleaner cleaner 5441 478263 0 0 3 0x14200 reaper reaper 52992 523398 0 0 3 0x14200 pgdaemon pagedaemon 78988 405413 0 0 3 0x14200 bored viomb 25121 402156 0 0 3 0x40014200 acpi0 acpi0 54434 137159 0 0 7 0x40014200 idle1 57237 376180 0 0 3 0x14200 bored softnet 96363 177026 0 0 3 0x14200 bored systqmp 33596 117843 0 0 3 0x14200 bored systq 65606 47774 0 0 3 0x40014200 bored softclock 65770 237801 0 0 3 0x40014200 idle0 1 139585 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 44027 (syz-executor.3) thread 0xffff800027bd37b0 (446943) exclusive rwlock vcpu r = 0 (0xffff800027af73b0) #0 witness_lock+0x44d #1 vm_run+0x2e0 sys/arch/amd64/amd64/vmm.c:4262 #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 69320 (syz-executor.0) thread 0xffff80002120cfc0 (378601) exclusive rrwlock inode r = 0 (0xfffffd806e5320a8) #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 (0xfffffd8071d1bb40) #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 Process 5865 (syz-executor.2) thread 0xffff80002120d500 (167428) exclusive rrwlock inode r = 0 (0xfffffd8071d1b5f0) #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 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3100 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8071d1bd60) #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 domkdirat+0x75 sys/kern/vfs_syscalls.c:3085 #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 10212 6580K 10607K 78643K 85604 0 pcb 13 20K 24K 78643K 7528 0 rtable 138 5K 24K 78643K 14410 0 ifaddr 69 22K 30K 78643K 4419 0 sysctl 3 1K 3K 78643K 15 0 counters 50 34K 35K 78643K 1020 0 ioctlops 0 0K 4K 78643K 15956 0 iov 0 0K 32K 78643K 5693 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1670 105K 105K 78643K 26147 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 367 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 7651 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 8 25K 49K 78643K 43096 0 sigio 0 0K 0K 78643K 476 0 proc 70 87K 111K 78643K 6610 0 subproc 52 3K 7K 78643K 2346 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2405 0 in_multi 46 3K 4K 78643K 3896 0 ether_multi 1 0K 0K 78643K 622 0 mrt 2 0K 0K 78643K 155 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 8621 0 pfkey data 0 0K 0K 78643K 17 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 753 2124K 2140K 78643K 516830 0 UVM aobj 131 4K 4K 78643K 137 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 2995 0 NDP 10 0K 1K 78643K 962 0 temp 108 4202K 8324K 78643K 392918 0 kqueue 10 14K 20K 78643K 1550 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 4022 0 4019 51 50 1 5 0 8 0 rtentry 112 2888 0 2832 2 0 2 2 0 8 0 unpcb 136 57492 0 57477 333 332 1 9 0 8 0 syncache 296 177 0 177 52 52 0 1 0 8 0 tcpqe 32 179 628 179 18 18 0 1 0 8 0 tcpcb 736 15214 0 15201 533 531 2 17 0 8 0 arp 120 375 0 365 1 0 1 1 0 8 0 inpcb 304 86158 0 86146 616 612 4 17 0 8 2 rttmr 72 18 0 18 6 6 0 1 0 8 0 nd6 48 677 0 664 1 0 1 1 0 8 0 pkpcb 40 217 0 217 22 22 0 1 0 8 0 kcovpl 48 173 0 169 1 0 1 1 0 8 0 ppxss 1248 93 0 93 27 27 0 1 0 8 0 pfstscr 40 130 0 130 15 15 0 1 0 8 0 pffrag 232 357 0 356 21 20 1 1 0 482 0 pffrnode 88 357 0 356 21 20 1 1 0 8 0 pffrent 40 3290 0 3289 22 21 1 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 2075 0 2075 29 29 0 4 0 8 0 pftag 88 63 0 61 5 4 1 1 0 8 0 pfqueue 264 15 0 6 1 0 1 1 0 8 0 pfstitem 24 78 0 76 1 0 1 1 0 8 0 pfstkey 112 318 0 316 1 0 1 1 0 8 0 pfstate 320 186 0 184 3 2 1 3 0 8 0 pfsrctr 152 8 0 8 1 1 0 1 0 8 0 pfrule 1360 7528 0 7321 21 3 18 18 0 8 0 art_heap8 4096 74 0 73 7 6 1 4 0 8 0 art_heap4 256 12287 0 12071 55 41 14 19 0 8 0 art_table 32 12361 0 12144 4 1 3 3 0 8 0 art_node 16 2772 0 2725 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 8 2 1 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 7647 0 7637 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 55813 0 54324 94 0 94 94 0 8 0 ffsino 272 55813 0 54324 101 1 100 100 0 8 0 nchpl 144 109702 0 108107 61 0 61 61 0 8 0 uvmvnodes 80 6174 0 0 126 0 126 126 0 8 0 vnodes 224 6174 0 0 364 0 364 364 0 8 0 namei 1024 393487 0 393486 10 9 1 1 0 8 0 percpumem 16 522 0 485 1 0 1 1 0 8 0 vcpupl 2048 406 0 0 51 0 51 51 0 8 0 vmpool 560 512 0 106 29 0 29 29 0 8 0 pfiaddrpl 120 714 0 714 8 8 0 3 0 8 0 scsiplug 72 28 0 28 8 8 0 1 0 8 0 scxspl 216 359883 0 359883 44 43 1 8 0 8 1 plimitpl 152 3831 0 3820 1 0 1 1 0 8 0 sigapl 424 42882 0 42846 9 3 6 7 0 8 0 futexpl 64 441533 0 441532 14 13 1 1 0 8 0 knotepl 112 374 0 0 4 0 4 4 0 8 0 kqueuepl 216 9304 0 9298 203 202 1 8 0 8 0 pipepl 336 7915 0 7899 188 186 2 9 0 8 0 fdescpl 496 42820 0 42799 8 5 3 4 0 8 0 filepl 152 348411 0 348258 586 577 9 19 0 8 2 lockfpl 104 13357 0 13355 32 31 1 2 0 8 0 lockfspl 48 3373 0 3371 1 0 1 1 0 8 0 sessionpl 144 197 0 184 1 0 1 1 0 8 0 pgrppl 48 598 0 585 1 0 1 1 0 8 0 ucredpl 96 36035 0 36015 1 0 1 1 0 8 0 zombiepl 144 42846 0 42846 2 1 1 1 0 8 1 processpl 1064 42882 0 42846 6 2 4 5 0 8 0 procpl 672 105916 0 105870 59 53 6 8 0 8 0 srpgc 96 227 0 227 44 44 0 1 0 8 0 sosppl 168 390 0 390 58 58 0 1 0 8 0 sockpl 480 147986 0 147953 2686 2678 8 43 0 8 3 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 4 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 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 650 0 0 48 12 36 38 0 8 0 mtagpl 96 2408 0 0 19 8 11 12 0 8 0 mbufpl 256 8991 0 0 554 0 554 554 0 8 0 bufpl 288 73766 0 67460 454 0 454 454 0 8 0 anonpl 24 9730356 0 9705467 901 729 172 236 0 186 5 amapchunkpl 152 1312107 0 1311181 445 398 47 69 0 158 8 amappl16 200 116644 0 115628 471 411 60 67 0 8 4 amappl15 192 7591 0 7588 1 0 1 1 0 8 0 amappl14 184 6448 0 6446 2 1 1 1 0 8 0 amappl13 176 9932 0 9930 1 0 1 1 0 8 0 amappl12 168 2150 0 2147 1 0 1 1 0 8 0 amappl11 160 2916 0 2897 1 0 1 1 0 8 0 amappl10 152 6040 0 6028 1 0 1 1 0 8 0 amappl9 144 6754 0 6751 1 0 1 1 0 8 0 amappl8 136 8956 0 8809 10 4 6 6 0 8 0 amappl7 128 5928 0 5916 1 0 1 1 0 8 0 amappl6 120 7441 0 7415 1 0 1 1 0 8 0 amappl5 112 34570 0 34543 1 0 1 1 0 8 0 amappl4 104 14022 0 13989 1 0 1 1 0 8 0 amappl3 96 10438 0 10415 1 0 1 1 0 8 0 amappl2 88 13096 0 13028 2 0 2 2 0 8 0 amappl1 80 747194 0 746706 18 7 11 13 0 8 0 amappl 88 512718 0 512366 10 1 9 9 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 43332 0 42905 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 43332 0 42905 3 0 3 3 0 8 0 vmmpekpl 168 238074 0 237998 5 1 4 5 0 8 0 vmmpepl 168 3886262 0 3882021 1258 1038 220 228 0 357 17 vmsppl 368 43331 0 42905 44 5 39 40 0 8 0 rwobjpl 56 892122 0 883664 223 102 121 124 0 8 0 pdppl 4096 86672 0 86216 630 170 460 462 0 8 4 pvpl 32 17318235 0 17296653 1112 904 208 324 0 265 2 pmappl 248 43331 0 42905 28 1 27 27 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 2802 0 966 54 1 53 53 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff8000278f3b40) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4295 vmmioctl(a00,c0205602,ffff8000278f3b40,1,ffff800027bd37b0) at vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 VOP_IOCTL(fffffd806e1e23d0,c0205602,ffff8000278f3b40,1,fffffd807f7d7780,ffff800027bd37b0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd800861c1e0,c0205602,ffff8000278f3b40,ffff800027bd37b0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800027bd37b0,ffff8000278f3c58,ffff8000278f3cb0) at sys_ioctl+0x4a2 syscall(ffff8000278f3d20) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000278f3d20) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x910aa920090, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d38ff0) 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(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5