kernel: protection fault trap, code=0 Stopped at done_flush+0x38: movl %eax,%dr6 ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace done_flush() at done_flush+0x38 vm_run(ffff80002d72b800) at vm_run+0x169 vmmioctl(a00,c0205602,ffff80002d72b800,1,ffff80002f0b0548) at vmmioctl+0x2a1 sys/dev/vmm/vmm.c:242 VOP_IOCTL(fffffd806e3c4290,c0205602,ffff80002d72b800,1,fffffd807f7d7618,ffff80002f0b0548) at VOP_IOCTL+0x97 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80635e38f8,c0205602,ffff80002d72b800,ffff80002f0b0548) at vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002f0b0548,ffff80002d72b9e0,ffff80002d72b930) at sys_ioctl+0x4a2 syscall(ffff80002d72b9e0) at syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002d72b9e0) at syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfcec0843990, count: -8 ddb{1}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff80002a22ce50 rbp 0xffff80002d72b550 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xfffffffffffffffb r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0xb5b183dd90dcb653 r11 0xa856aae6d33ef1bb r12 0xffff800029cebff0 r13 0x246 r14 0xffff80002a22c800 r15 0xffff80002d72b800 rip 0xffffffff8249f7dd done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80002d72b3e6 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{1}> show proc PROC (syz-executor.2) tid=456102 pid=53073 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002f0b0d40,0xffffffff82dd0ae0 process=0xffff80002d741658 user=0xffff80002d726000, vmspace=0xfffffd806fceb1e8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 53073 273271 42835 0 7 0 syz-executor.2 *53073 456102 42835 0 7 0x4000000 syz-executor.2 63326 260647 34071 0 2 0 syz-executor.4 63326 55055 34071 0 3 0x4000080 fsleep syz-executor.4 63326 387044 34071 0 3 0x4000080 fsleep syz-executor.4 64031 316618 9196 0 3 0x80 nanoslp syz-executor.7 64031 120908 9196 0 3 0x4000080 fsleep syz-executor.7 23282 180547 31130 0 3 0x80 nanoslp syz-executor.5 23282 498004 31130 0 3 0x4000080 kqpoll syz-executor.5 23282 339056 31130 0 3 0x4000080 fsleep syz-executor.5 9196 294401 90479 0 3 0x82 nanoslp syz-executor.7 47588 473612 90479 0 3 0x82 nanoslp syz-executor.0 34071 334064 90479 0 3 0x82 nanoslp syz-executor.4 83490 115208 90479 0 3 0x82 nanoslp syz-executor.3 46193 308894 90479 0 2 0x2 syz-executor.6 31130 26208 90479 0 3 0x82 nanoslp syz-executor.5 74199 362033 90479 0 3 0x82 nanoslp syz-executor.1 69650 73899 0 0 3 0x14200 acct acct 91395 93147 1 0 3 0x100083 ttyin getty 42835 270507 90479 0 3 0x82 nanoslp syz-executor.2 34922 297154 0 0 3 0x14280 nfsidl nfsio 88220 95915 0 0 3 0x14280 nfsidl nfsio 14469 184992 0 0 3 0x14280 nfsidl nfsio 58576 306621 0 0 3 0x14280 nfsidl nfsio 68550 214842 0 0 3 0x14280 nfsidl nfsio 69633 6796 0 0 3 0x14280 nfsidl nfsio 91610 381680 0 0 3 0x14280 nfsidl nfsio 39572 342773 0 0 3 0x14280 nfsidl nfsio 15361 266389 0 0 3 0x14280 nfsidl nfsio 57003 470147 0 0 3 0x14280 nfsidl nfsio 62898 504471 0 0 3 0x14280 nfsidl nfsio 13379 229005 0 0 3 0x14280 nfsidl nfsio 48345 404610 0 0 3 0x14280 nfsidl nfsio 39462 351661 0 0 3 0x14280 nfsidl nfsio 55625 20564 0 0 3 0x14280 nfsidl nfsio 42033 423033 0 0 3 0x14280 nfsidl nfsio 92380 18369 0 0 3 0x14280 nfsidl nfsio 75449 290021 0 0 3 0x14280 nfsidl nfsio 60836 326647 0 0 3 0x14280 nfsidl nfsio 38441 363075 0 0 3 0x14280 nfsidl nfsio 61411 86018 0 0 3 0x14200 bored sosplice 90479 256815 8995 0 3 0x2000082 wait syz-fuzzer 90479 457477 8995 0 3 0x6000082 nanoslp syz-fuzzer 90479 25580 8995 0 3 0x6000082 thrsleep syz-fuzzer 90479 242564 8995 0 3 0x6000082 wait syz-fuzzer 90479 419156 8995 0 3 0x6000082 thrsleep syz-fuzzer 90479 198443 8995 0 3 0x6000082 thrsleep syz-fuzzer 90479 312247 8995 0 3 0x6000082 wait syz-fuzzer 90479 430248 8995 0 3 0x6000082 wait syz-fuzzer 90479 319376 8995 0 3 0x6000082 wait syz-fuzzer 90479 162627 8995 0 3 0x6000082 wait syz-fuzzer 90479 471369 8995 0 3 0x6000082 thrsleep syz-fuzzer 90479 220908 8995 0 3 0x6000082 thrsleep syz-fuzzer 90479 491484 8995 0 3 0x6000082 wait syz-fuzzer 90479 289738 8995 0 3 0x6000082 kqread syz-fuzzer 90479 141708 8995 0 3 0x6000082 wait syz-fuzzer 90479 381980 8995 0 3 0x6000082 thrsleep syz-fuzzer 8995 34373 6459 0 3 0x10008a sigsusp ksh 6459 199351 29430 0 3 0x9a kqread sshd 29430 296088 1 0 3 0x88 kqread sshd 29998 459602 65445 74 3 0x1100092 bpf pflogd 65445 31828 1 0 3 0x80 netio pflogd 51370 53822 83078 73 3 0x1100090 kqread syslogd 83078 455881 1 0 3 0x100082 netio syslogd 49701 159898 1 0 3 0x100080 kqread resolvd 18043 406020 10654 77 3 0x100092 kqread dhcpleased 34130 496383 10654 77 3 0x100092 kqread dhcpleased 10654 514119 1 0 3 0x80 kqread dhcpleased 69652 164552 0 0 3 0x14200 bored smr 30743 64090 0 0 2 0x14200 zerothread 58623 72669 0 0 3 0x14200 aiodoned aiodoned 21947 321234 0 0 3 0x14200 syncer update 21942 206636 0 0 3 0x14200 cleaner cleaner 97385 513789 0 0 3 0x14200 reaper reaper 26373 510939 0 0 3 0x14200 pgdaemon pagedaemon 2963 33392 0 0 3 0x14200 bored viomb 12770 463369 0 0 3 0x40014200 acpi0 acpi0 70272 443398 0 0 3 0x40014200 idle1 55045 47983 0 0 3 0x14200 bored softnet3 33732 482061 0 0 3 0x14200 bored softnet2 88744 343437 0 0 3 0x14200 bored softnet1 96178 154966 0 0 3 0x14200 bored softnet0 82028 361241 0 0 3 0x14200 bored systqmp 17433 84783 0 0 3 0x14200 bored systq 51075 385014 0 0 3 0x14200 tmoslp softclockmp 30463 19510 0 0 3 0x40014200 tmoslp softclock 73891 350358 0 0 3 0x40014200 idle0 1 101292 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 53073 (syz-executor.2) thread 0xffff80002f0b0548 (456102) exclusive rwlock vcpu r = 0 (0xffff80002a22cbb8) #0 witness_lock+0x447 #1 vm_run+0x77 sys/arch/amd64/amd64/vmm_machdep.c:3667 #2 vmmioctl+0x2a1 sys/dev/vmm/vmm.c:242 #3 VOP_IOCTL+0x97 sys/kern/vfs_vops.c:264 #4 vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525 #5 sys_ioctl+0x4a2 #6 syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] #6 syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 46193 (syz-executor.6) thread 0xffff80002a214008 (308894) exclusive rrwlock inode r = 0 (0xfffffd80676f34d8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x1c5 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfb sys/ufs/ufs/ufs_vnops.c:1127 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3069 #10 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #10 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80681941b8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3054 #8 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #8 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10228 6574K 7288K 166960K 23070 0 pcb 15 18K 20K 166960K 781 0 rtable 191 14K 15K 166960K 2108 0 pf 36 10K 11K 166960K 238 0 ifaddr 40 14K 16K 166960K 216 0 ifgroup 63 2K 2K 166960K 366 0 sysctl 3 0K 0K 166960K 5 0 counters 68 36K 37K 166960K 234 0 ioctlops 0 0K 4K 166960K 2020 0 iov 0 0K 40K 166960K 665 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1471 92K 93K 166960K 5485 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 108 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 1149 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 14 49K 85K 166960K 7899 0 sigio 0 0K 0K 166960K 269 0 proc 70 91K 128K 166960K 1475 0 subproc 104 6K 6K 166960K 383 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 696 0 in_multi 69 5K 7K 166960K 514 0 ether_multi 1 0K 0K 166960K 10 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 1412 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 431 380K 381K 166960K 79427 0 UVM aobj 131 4K 4K 166960K 140 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 293 0 NDP 14 0K 2K 166960K 168 0 temp 74 6772K 7412K 166960K 102692 0 kqueue 13 20K 27K 166960K 587 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 336 0 333 3 2 1 2 0 8 0 rtentry 112 520 0 436 5 1 4 4 0 8 0 unpcb 144 5361 0 5344 60 55 5 10 0 8 4 syncache 336 98 0 98 15 15 0 1 0 8 0 sackhl 24 2 0 2 1 1 0 1 0 8 0 tcpqe 32 544 0 544 15 15 0 1 0 8 0 tcpcb 808 2372 0 2357 79 77 2 14 0 8 0 arp 120 90 0 76 1 0 1 1 0 8 0 inpcb 392 6271 0 6251 125 119 6 24 0 8 3 nd6 136 109 0 94 1 0 1 1 0 8 0 pkpcb 40 16 0 16 4 3 1 1 0 8 1 kcovpl 48 29 0 21 1 0 1 1 0 8 0 ppxss 1168 28 0 28 8 8 0 1 0 8 0 pffrag 232 71 0 70 2 1 1 1 0 482 0 pffrnode 88 71 0 70 2 1 1 1 0 8 0 pffrent 40 198 0 197 2 1 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 pfstitem 24 302 0 275 1 0 1 1 0 8 0 pfstkey 128 302 0 275 2 0 2 2 0 8 0 pfstate 376 302 0 275 13 9 4 7 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1882 0 1528 43 16 27 32 0 8 0 art_table 32 1883 0 1528 5 0 5 5 0 8 0 art_node 16 515 0 438 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 1146 0 1136 1 0 1 1 0 8 0 shmpl 112 137 0 9 4 0 4 4 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 11470 0 9989 93 0 93 93 0 8 0 ffsino 272 11470 0 9989 99 0 99 99 0 8 0 nchpl 144 22168 0 20512 63 0 63 63 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 73372 0 73371 5 4 1 2 0 8 0 percpumem 16 131 0 83 1 0 1 1 0 8 0 vcpupl 2048 41 0 1 5 0 5 5 0 8 0 vmpool 696 63 0 23 6 2 4 4 0 8 0 kstatmem 264 194 0 166 7 5 2 3 0 8 0 scxspl 216 69006 0 69006 29 28 1 8 1 8 1 plimitpl 152 551 0 534 1 0 1 1 0 8 0 sigapl 424 8196 0 8126 10 1 9 9 0 8 0 futexpl 64 62369 0 62365 3 2 1 1 0 8 0 knotepl 120 357 0 0 7 0 7 7 0 8 0 kqueuepl 216 1527 0 1517 33 32 1 5 0 8 0 pipepl 320 1022 0 993 35 32 3 8 0 8 0 fdescpl 496 8153 0 8126 5 0 5 5 0 8 0 filepl 152 44346 0 44092 94 79 15 22 0 8 2 lockfpl 104 2322 0 2319 7 6 1 2 0 8 0 lockfspl 48 879 0 876 1 0 1 1 0 8 0 sessionpl 144 46 0 29 1 0 1 1 0 8 0 pgrppl 48 143 0 126 1 0 1 1 0 8 0 ucredpl 104 5649 0 5635 1 0 1 1 0 8 0 zombiepl 144 8129 0 8126 1 0 1 1 0 8 0 processpl 1136 8196 0 8126 6 0 6 6 0 8 0 procpl 680 22009 0 21918 11 2 9 10 0 8 0 srpgc 96 35 0 35 13 13 0 1 0 8 0 sosppl 168 115 0 113 10 9 1 1 0 8 0 sockpl 584 12022 0 11982 144 137 7 20 0 8 3 mcl64k 65536 23 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 3 0 3 3 0 8 0 mcl12k 12288 23 0 0 2 0 2 2 0 8 0 mcl9k 9216 12 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 33 0 0 3 0 3 3 0 8 0 mcl2k2 2112 13 0 0 1 0 1 1 0 8 0 mcl2k 2048 330 0 0 31 2 29 31 0 8 2 mtagpl 96 347 0 0 8 0 8 8 0 8 0 mbufpl 256 1361 0 0 73 0 73 73 0 8 0 bufpl 280 17060 0 10740 452 0 452 452 0 8 0 anonpl 24 957856 0 943753 241 132 109 166 0 186 0 amapchunkpl 152 258233 0 257366 75 35 40 65 0 158 0 amappl16 200 21713 0 21207 104 75 29 40 0 8 0 amappl15 192 46 0 45 1 0 1 1 0 8 0 amappl14 184 232 0 216 2 1 1 2 0 8 0 amappl13 176 10 0 10 1 1 0 1 0 8 0 amappl12 168 9145 0 9112 3 1 2 2 0 8 0 amappl11 160 58 0 44 1 0 1 1 0 8 0 amappl10 152 58 0 43 1 0 1 1 0 8 0 amappl9 144 244 0 243 1 0 1 1 0 8 0 amappl8 136 566 0 454 5 0 5 5 0 8 0 amappl7 128 255 0 229 2 0 2 2 0 8 0 amappl6 120 673 0 657 1 0 1 1 0 8 0 amappl5 112 331 0 318 1 0 1 1 0 8 0 amappl4 104 704 0 671 2 1 1 2 0 8 0 amappl3 96 49274 0 49188 4 1 3 3 0 8 0 amappl2 88 8896 0 8818 3 1 2 3 0 8 0 amappl1 80 38544 0 37983 23 9 14 23 0 8 0 amappl 88 78448 0 78201 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 8216 0 8149 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8216 0 8149 1 0 1 1 0 8 0 vmmpekpl 168 63136 0 63051 5 0 5 5 0 8 0 vmmpepl 168 503658 0 501213 330 186 144 145 0 357 18 vmsppl 448 8215 0 8149 9 1 8 8 0 8 0 rwobjpl 56 132828 0 125084 121 9 112 114 0 8 0 pdppl 4096 16439 0 16338 536 428 108 108 0 8 7 pvpl 32 45722 0 0 369 0 369 369 0 265 0 pmappl 248 8215 0 8149 6 1 5 5 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1170 0 692 14 0 14 14 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82c95ff0) at x86_ipi_db+0x1e 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+0x27 end of kernel end trace frame: 0x7a0e6e81a430, count: -3 ddb{0}> machine ddbcpu 1 Stopped at done_flush+0x38: movl %eax,%dr6 ddb{1}> trace done_flush() at done_flush+0x38 vm_run(ffff80002d72b800) at vm_run+0x169 vmmioctl(a00,c0205602,ffff80002d72b800,1,ffff80002f0b0548) at vmmioctl+0x2a1 sys/dev/vmm/vmm.c:242 VOP_IOCTL(fffffd806e3c4290,c0205602,ffff80002d72b800,1,fffffd807f7d7618,ffff80002f0b0548) at VOP_IOCTL+0x97 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80635e38f8,c0205602,ffff80002d72b800,ffff80002f0b0548) at vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002f0b0548,ffff80002d72b9e0,ffff80002d72b930) at sys_ioctl+0x4a2 syscall(ffff80002d72b9e0) at syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002d72b9e0) at syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfcec0843990, count: -8