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(ffff80002bbf8d60) at vm_run+0x169 vmmioctl(a00,c0205602,ffff80002bbf8d60,1,ffff80002a225ab8) at vmmioctl+0x2a1 sys/dev/vmm/vmm.c:242 VOP_IOCTL(fffffd806e1070e0,c0205602,ffff80002bbf8d60,1,fffffd807f7d73a8,ffff80002a225ab8) at VOP_IOCTL+0x97 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805c89fee0,c0205602,ffff80002bbf8d60,ffff80002a225ab8) at vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002a225ab8,ffff80002bbf8f40,ffff80002bbf8e90) at sys_ioctl+0x4a2 syscall(ffff80002bbf8f40) at syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002bbf8f40) at syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x50a92af3680, count: -8 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800033f56650 rbp 0xffff80002bbf8ab0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xffffffffffffffff r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0xa83a8898b90927d1 r11 0x1359c456da192521 r12 0xffffffff82ce7ff0 cpu_info_full_primary+0x1ff0 r13 0x246 r14 0xffff800033f56000 r15 0xffff80002bbf8d60 rip 0xffffffff81aaa6bb done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80002bbf8916 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor.4) tid=170961 pid=71669 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=78, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a225d60,0xffff80002a225820 process=0xffff8000ffff7550 user=0xffff80002bbf3000, vmspace=0xfffffd80639c2e08 estcpu=28, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 92613 124855 85255 0 2 0 syz-executor.6 92613 474688 85255 0 3 0x4000080 ttyin syz-executor.6 56040 476478 86435 0 2 0 syz-executor.0 56040 456353 86435 0 3 0x4000080 ttyin syz-executor.0 79571 474616 26089 0 2 0 syz-executor.5 79571 359108 26089 0 3 0x4000000 biowait syz-executor.5 98623 294018 22438 0 2 0 syz-executor.1 98623 511190 22438 0 3 0x4000080 fsleep syz-executor.1 4947 160014 31595 0 2 0 syz-executor.7 4947 478527 31595 0 3 0x4000080 fsleep syz-executor.7 79368 187419 31549 0 2 0 syz-executor.3 79368 413821 31549 0 3 0x4000080 fsleep syz-executor.3 71669 181953 85790 0 2 0 syz-executor.4 *71669 170961 85790 0 7 0x4000000 syz-executor.4 85255 114349 90569 0 3 0x82 nanoslp syz-executor.6 22438 272946 90569 0 3 0x82 nanoslp syz-executor.1 61387 44835 0 0 3 0x14200 acct acct 85790 425340 90569 0 3 0x82 nanoslp syz-executor.4 31549 258057 90569 0 3 0x82 nanoslp syz-executor.3 31595 365304 90569 0 3 0x82 nanoslp syz-executor.7 26089 431242 90569 0 3 0x82 nanoslp syz-executor.5 86435 120138 90569 0 3 0x82 nanoslp syz-executor.0 45168 168312 1 0 3 0x100083 ttyin getty 37255 447827 90569 0 3 0x82 nanoslp syz-executor.2 13632 330556 0 0 3 0x14200 bored sosplice 90569 419735 45034 0 3 0x2000082 wait syz-fuzzer 90569 232791 45034 0 3 0x6000082 thrsleep syz-fuzzer 90569 491943 45034 0 3 0x6000082 wait syz-fuzzer 90569 319215 45034 0 3 0x6000082 thrsleep syz-fuzzer 90569 389095 45034 0 3 0x6000082 wait syz-fuzzer 90569 161723 45034 0 3 0x6000082 wait syz-fuzzer 90569 428276 45034 0 3 0x6000082 wait syz-fuzzer 90569 260161 45034 0 3 0x6000082 thrsleep syz-fuzzer 90569 397804 45034 0 3 0x6000082 thrsleep syz-fuzzer 90569 159266 45034 0 3 0x6000082 thrsleep syz-fuzzer 90569 198827 45034 0 3 0x6000082 wait syz-fuzzer 90569 196258 45034 0 3 0x6000082 thrsleep syz-fuzzer 90569 255948 45034 0 3 0x6000082 wait syz-fuzzer 90569 160797 45034 0 3 0x6000082 kqread syz-fuzzer 90569 167157 45034 0 3 0x6000082 wait syz-fuzzer 90569 68930 45034 0 3 0x6000082 thrsleep syz-fuzzer 45034 212444 51422 0 3 0x10008a sigsusp ksh 51422 21639 16929 0 3 0x9a kqread sshd 16929 234385 1 0 3 0x88 kqread sshd 99155 497932 51776 74 3 0x1100092 bpf pflogd 51776 165676 1 0 3 0x80 netio pflogd 22683 69230 65747 73 3 0x1100090 kqread syslogd 65747 66375 1 0 3 0x100082 netio syslogd 10560 366286 1 0 3 0x100080 kqread resolvd 23639 389809 0 0 3 0x14200 bored smr 14379 147779 0 0 2 0x14200 zerothread 85325 189596 0 0 3 0x14200 aiodoned aiodoned 16556 9593 0 0 3 0x14200 syncer update 62974 39517 0 0 3 0x14200 cleaner cleaner 72240 357598 0 0 3 0x14200 reaper reaper 11058 516186 0 0 3 0x14200 pgdaemon pagedaemon 18814 152270 0 0 3 0x14200 bored viomb 30994 157635 0 0 3 0x40014200 acpi0 acpi0 97723 287152 0 0 7 0x40014200 idle1 29970 499638 0 0 3 0x14200 bored softnet3 19621 176383 0 0 3 0x14200 bored softnet2 99921 282070 0 0 3 0x14200 bored softnet1 62949 436121 0 0 3 0x14200 bored softnet0 21302 80931 0 0 3 0x14200 bored systqmp 62795 506744 0 0 3 0x14200 bored systq 26200 182465 0 0 3 0x14200 tmoslp softclockmp 24529 114834 0 0 3 0x40014200 tmoslp softclock 3986 7191 0 0 3 0x40014200 idle0 1 36698 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 79571 (syz-executor.5) thread 0xffff80002a226aa8 (359108) exclusive rrwlock inode r = 0 (0xfffffd806f0464e0) #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_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1743 #8 ufs_create+0x45 sys/ufs/ufs/ufs_vnops.c:147 #9 VOP_CREATE+0xc0 sys/kern/vfs_vops.c:103 #10 vn_open+0x27b sys/kern/vfs_vnops.c:116 #11 doopenat+0x26e sys/kern/vfs_syscalls.c:1126 #12 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #12 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806f0465f0) #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 vn_open+0x17b sys/kern/vfs_vnops.c:107 #8 doopenat+0x26e sys/kern/vfs_syscalls.c:1126 #9 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #9 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 Process 71669 (syz-executor.4) thread 0xffff80002a225ab8 (170961) exclusive rwlock vcpu r = 0 (0xffff800033f563b8) #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10223 6503K 14749K 166960K 27281 0 pcb 15 24K 26K 166960K 1563 0 rtable 253 15K 17K 166960K 2804 0 pf 40 10K 11K 166960K 297 0 ifaddr 50 18K 19K 166960K 368 0 ifgroup 71 3K 3K 166960K 477 0 sysctl 4 1K 1K 166960K 14 0 counters 70 37K 37K 166960K 300 0 ioctlops 0 0K 4K 166960K 2263 0 iov 0 0K 32K 166960K 1381 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1475 92K 93K 166960K 8284 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 174 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 16 0 dirhash 12 2K 2K 166960K 75 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 87K 166960K 16511 0 sigio 0 0K 0K 166960K 821 0 proc 86 68K 127K 166960K 2453 0 subproc 104 6K 7K 166960K 816 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1257 0 in_multi 100 7K 7K 166960K 731 0 ether_multi 1 0K 0K 166960K 12 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 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 2512 0 pfkey data 0 0K 0K 166960K 14 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 529 605K 607K 166960K 155263 0 UVM aobj 131 4K 4K 166960K 132 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 672 0 NDP 15 0K 1K 166960K 231 0 temp 74 6708K 7356K 166960K 132982 0 kqueue 6 10K 26K 166960K 1181 0 SYN cache 2 56K 64K 166960K 4 0 ddb{0}> 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 120 791 0 790 6 5 1 3 0 8 0 rtentry 112 983 0 868 5 1 4 4 0 8 0 unpcb 144 13858 0 13848 131 130 1 6 0 8 0 syncache 320 192 0 192 33 33 0 1 0 8 0 tcpqe 32 505 0 505 24 24 0 1 0 8 0 tcpcb 808 4705 0 4687 128 119 9 16 0 8 6 arp 120 202 0 183 1 0 1 1 0 8 0 inpcb 376 14128 0 14110 240 231 9 19 0 8 5 nd6 136 166 0 140 1 0 1 1 0 8 0 pkpcb 40 298 0 298 13 13 0 1 0 8 0 kcovpl 48 50 0 42 1 0 1 1 0 8 0 ppxss 1168 37 0 37 10 10 0 1 0 8 0 pffrag 232 106 0 103 5 4 1 1 0 482 0 pffrnode 88 106 0 103 5 4 1 1 0 8 0 pffrent 40 365 0 362 5 4 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 24 558 0 538 1 0 1 1 0 8 0 pfstkey 128 690 0 670 4 2 2 2 0 8 0 pfstate 376 690 0 670 12 8 4 6 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 2562 0 2099 47 17 30 32 0 8 0 art_table 32 2563 0 2099 5 0 5 5 0 8 0 art_node 16 888 0 788 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 8 2 2 0 1 0 8 0 semupl 112 4 0 4 2 2 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 59 0 42 3 0 3 3 0 8 0 dino2pl 256 23396 0 21901 94 0 94 94 0 8 0 ffsino 272 23396 0 21901 101 0 101 101 0 8 0 nchpl 144 45521 0 43870 63 0 63 63 0 8 0 uvmvnodes 80 7048 0 0 144 0 144 144 0 8 0 vnodes 216 7048 0 0 392 0 392 392 0 8 0 namei 1024 154344 0 154343 9 8 1 2 0 8 0 percpumem 16 164 0 115 1 0 1 1 0 8 0 vcpupl 2048 215 0 0 27 0 27 27 0 8 0 vmpool 696 253 0 38 20 0 20 20 0 8 0 kstatmem 264 260 0 230 4 1 3 3 0 8 0 scxspl 216 135142 0 135141 20 19 1 8 1 8 0 plimitpl 152 2758 0 2743 1 0 1 1 0 8 0 sigapl 424 16819 0 16771 17 11 6 9 0 8 0 futexpl 64 144868 0 144865 5 4 1 1 0 8 0 knotepl 120 798 0 0 11 1 10 11 0 8 0 kqueuepl 216 2911 0 2906 46 43 3 5 0 8 2 pipepl 320 2873 0 2845 75 72 3 11 0 8 0 fdescpl 496 16740 0 16713 5 0 5 5 0 8 0 filepl 152 100212 0 99983 167 152 15 22 0 8 2 lockfpl 104 4844 0 4843 10 9 1 2 0 8 0 lockfspl 48 1560 0 1559 1 0 1 1 0 8 0 sessionpl 144 68 0 52 1 0 1 1 0 8 0 pgrppl 48 523 0 507 1 0 1 1 0 8 0 ucredpl 104 14777 0 14761 1 0 1 1 0 8 0 zombiepl 144 16772 0 16771 3 2 1 1 0 8 0 processpl 1136 16819 0 16771 6 1 5 6 0 8 0 procpl 680 41838 0 41768 14 6 8 9 0 8 0 srpgc 96 71 0 71 20 20 0 1 0 8 0 sosppl 168 268 0 268 11 10 1 1 0 8 1 sockpl 584 29127 0 29098 245 237 8 19 0 8 3 mcl64k 65536 15 0 0 2 0 2 2 0 8 0 mcl16k 16384 20 0 0 3 1 2 3 0 8 0 mcl12k 12288 11 0 0 2 0 2 2 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 21 0 0 3 0 3 3 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 420 0 0 38 17 21 38 0 8 1 mtagpl 96 493 0 0 12 4 8 12 0 8 0 mbufpl 256 1911 0 0 114 0 114 114 0 8 0 bufpl 280 29656 0 22576 506 0 506 506 0 8 0 anonpl 24 1629952 0 1615418 242 128 114 153 0 186 0 amapchunkpl 152 503540 0 502654 113 74 39 66 0 158 0 amappl16 200 31602 0 31096 147 110 37 43 0 8 7 amappl15 192 12 0 11 1 0 1 1 0 8 0 amappl14 184 343 0 330 2 1 1 2 0 8 0 amappl13 176 85 0 84 1 0 1 1 0 8 0 amappl12 168 18044 0 18014 4 1 3 3 0 8 0 amappl11 160 85 0 76 1 0 1 1 0 8 0 amappl10 152 75 0 61 2 1 1 1 0 8 0 amappl9 144 378 0 377 1 0 1 1 0 8 0 amappl8 136 797 0 637 7 1 6 6 0 8 0 amappl7 128 326 0 300 2 0 2 2 0 8 0 amappl6 120 1018 0 1000 1 0 1 1 0 8 0 amappl5 112 405 0 397 1 0 1 1 0 8 0 amappl4 104 975 0 938 12 10 2 2 0 8 0 amappl3 96 96223 0 96134 3 0 3 3 0 8 0 amappl2 88 17893 0 17822 3 1 2 3 0 8 0 amappl1 80 70714 0 70247 24 12 12 23 0 8 0 amappl 88 153886 0 153606 8 1 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 72 131 0 1 3 0 3 3 0 8 0 uaddrrnd 24 16993 0 16751 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 16993 0 16751 2 0 2 2 0 8 0 vmmpekpl 168 113224 0 113128 5 0 5 5 0 8 0 vmmpepl 168 988217 0 985576 446 302 144 154 0 357 11 vmsppl 448 16992 0 16751 30 3 27 28 0 8 0 rwobjpl 56 233095 0 224304 146 19 127 128 0 8 1 pdppl 4096 33993 0 33717 934 656 278 280 0 8 2 pvpl 32 44031 0 0 357 1 356 356 0 265 0 pmappl 248 16992 0 16751 16 0 16 16 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1809 0 1076 22 0 22 22 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff80002bbf8d60) at vm_run+0x169 vmmioctl(a00,c0205602,ffff80002bbf8d60,1,ffff80002a225ab8) at vmmioctl+0x2a1 sys/dev/vmm/vmm.c:242 VOP_IOCTL(fffffd806e1070e0,c0205602,ffff80002bbf8d60,1,fffffd807f7d73a8,ffff80002a225ab8) at VOP_IOCTL+0x97 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805c89fee0,c0205602,ffff80002bbf8d60,ffff80002a225ab8) at vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002a225ab8,ffff80002bbf8f40,ffff80002bbf8e90) at sys_ioctl+0x4a2 syscall(ffff80002bbf8f40) at syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002bbf8f40) at syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x50a92af3680, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029cfbff0) 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800029cfbff0) at sched_idle+0x41e sys/kern/kern_sched.c:183 end trace frame: 0x0, count: -5