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(ffff8000371f7d30) at vm_run+0x169 vmmioctl(a00,c0205602,ffff8000371f7d30,1,ffff80002f0d7020) at vmmioctl+0x2a1 sys/dev/vmm/vmm.c:242 VOP_IOCTL(fffffd806ed976c8,c0205602,ffff8000371f7d30,1,fffffd807f7d7888,ffff80002f0d7020) at VOP_IOCTL+0x97 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8069c2a4d8,c0205602,ffff8000371f7d30,ffff80002f0d7020) at vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002f0d7020,ffff8000371f7e40,ffff8000371f7e90) at sys_ioctl+0x4a2 syscall(ffff8000371f7f40) at syscall+0x673 mi_syscall sys/sys/syscall_mi.h:182 [inline] syscall(ffff8000371f7f40) at syscall+0x673 sys/arch/amd64/amd64/trap.c:591 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa63bf0a6660, count: -8 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff8000373ace50 rbp 0xffff8000371f7a80 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xfffffffffffffffc r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0x5ca02ec29565046c r11 0x2c54c507bc648a8a r12 0xffffffff82cddff0 cpu_info_full_primary+0x1ff0 r13 0xffffffff82cddff0 cpu_info_full_primary+0x1ff0 r14 0xffff8000373ac800 r15 0x246 rip 0xffffffff81f94f4b done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff8000371f78e6 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor.6) tid=498563 pid=82650 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002f0d7d68,0xffff80002f0d72d8 process=0xffff8000371d91f8 user=0xffff8000371f2000, vmspace=0xfffffd806908c1c0 estcpu=32, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 68414 100074 37787 0 2 0 syz-executor.0 71361 347366 58177 0 7 0 syz-executor.3 71361 30356 58177 0 2 0x4000000 syz-executor.3 82650 168279 34919 0 2 0 syz-executor.6 *82650 498563 34919 0 7 0x4000000 syz-executor.6 64394 422706 8944 0 3 0x80 nanoslp syz-executor.2 64394 324250 8944 0 3 0x4000080 kqpoll syz-executor.2 64394 6284 8944 0 3 0x4000080 fsleep syz-executor.2 63732 351452 55264 0 3 0x80 nanoslp syz-executor.7 63732 41126 55264 0 3 0x4000080 netio syz-executor.7 63732 503173 55264 0 3 0x4000080 fsleep syz-executor.7 94133 193673 57136 0 3 0x80 nanoslp syz-executor.5 94133 111529 57136 0 3 0x4000080 fifor syz-executor.5 94133 216712 57136 0 3 0x4000080 fsleep syz-executor.5 37787 416018 11000 0 3 0x82 nanoslp syz-executor.0 55264 265631 11000 0 3 0x82 nanoslp syz-executor.7 49166 221614 0 0 3 0x14280 nfsidl nfsio 18104 20229 0 0 3 0x14280 nfsidl nfsio 74649 92873 0 0 3 0x14280 nfsidl nfsio 30921 160988 0 0 3 0x14280 nfsidl nfsio 93589 29912 0 0 3 0x14280 nfsidl nfsio 38208 151941 0 0 3 0x14280 nfsidl nfsio 1574 156394 0 0 3 0x14280 nfsidl nfsio 74372 399993 0 0 3 0x14280 nfsidl nfsio 58937 221253 0 0 3 0x14280 nfsidl nfsio 72605 29970 0 0 3 0x14280 nfsidl nfsio 20449 303181 0 0 3 0x14280 nfsidl nfsio 2104 416772 0 0 3 0x14280 nfsidl nfsio 42259 433995 0 0 3 0x14280 nfsidl nfsio 5476 301090 0 0 3 0x14280 nfsidl nfsio 69337 512166 0 0 3 0x14280 nfsidl nfsio 47814 285991 0 0 3 0x14280 nfsidl nfsio 38460 284523 0 0 3 0x14280 nfsidl nfsio 83930 110562 0 0 3 0x14280 nfsidl nfsio 80975 223602 0 0 3 0x14280 nfsidl nfsio 13995 281670 0 0 3 0x14280 nfsidl nfsio 58177 305325 11000 0 3 0x82 nanoslp syz-executor.3 34919 74851 11000 0 3 0x82 nanoslp syz-executor.6 62005 268141 11000 0 2 0x2 syz-executor.1 8944 122862 11000 0 3 0x82 nanoslp syz-executor.2 58106 146522 0 0 3 0x14200 acct acct 91184 492490 0 0 3 0x14200 bored sosplice 154 312726 11000 0 2 0x2 syz-executor.4 57136 121177 11000 0 3 0x82 nanoslp syz-executor.5 11000 106135 3890 0 3 0x2000082 wait syz-fuzzer 11000 383553 3890 0 3 0x6000082 nanoslp syz-fuzzer 11000 112513 3890 0 3 0x6000082 wait syz-fuzzer 11000 449680 3890 0 3 0x6000082 thrsleep syz-fuzzer 11000 151562 3890 0 3 0x6000082 wait syz-fuzzer 11000 346545 3890 0 3 0x6000082 thrsleep syz-fuzzer 11000 118977 3890 0 3 0x6000082 wait syz-fuzzer 11000 349052 3890 0 3 0x6000082 thrsleep syz-fuzzer 11000 113993 3890 0 3 0x6000082 wait syz-fuzzer 11000 99116 3890 0 3 0x6000082 thrsleep syz-fuzzer 11000 51638 3890 0 3 0x6000082 thrsleep syz-fuzzer 11000 329419 3890 0 3 0x6000082 kqread syz-fuzzer 11000 393422 3890 0 3 0x6000082 wait syz-fuzzer 11000 415754 3890 0 3 0x6000082 thrsleep syz-fuzzer 11000 232806 3890 0 3 0x6000082 wait syz-fuzzer 11000 209480 3890 0 3 0x6000082 wait syz-fuzzer 3890 463890 23025 0 3 0x10008a sigsusp ksh 23025 439239 31026 0 3 0x9a kqread sshd 17887 459539 1 0 3 0x100083 ttyin getty 31026 459044 1 0 3 0x88 kqread sshd 69866 325437 26968 74 3 0x1100092 bpf pflogd 26968 432204 1 0 3 0x80 netio pflogd 33726 362037 99463 73 3 0x1100090 kqread syslogd 99463 423398 1 0 3 0x100082 netio syslogd 98915 496420 1 0 3 0x100080 kqread resolvd 96023 67932 84273 77 3 0x100092 kqread dhcpleased 4056 203993 84273 77 3 0x100092 kqread dhcpleased 84273 27900 1 0 3 0x80 kqread dhcpleased 79415 239249 0 0 3 0x14200 bored smr 68738 118266 0 0 2 0x14200 zerothread 69317 501640 0 0 3 0x14200 aiodoned aiodoned 60787 93068 0 0 3 0x14200 syncer update 54544 20983 0 0 3 0x14200 cleaner cleaner 4150 88519 0 0 3 0x14200 reaper reaper 28784 141541 0 0 3 0x14200 pgdaemon pagedaemon 47136 170638 0 0 3 0x14200 bored viomb 44156 36941 0 0 3 0x40014200 acpi0 acpi0 65200 470317 0 0 3 0x40014200 idle1 13285 454519 0 0 3 0x14200 bored softnet3 30120 252404 0 0 3 0x14200 bored softnet2 58069 124637 0 0 3 0x14200 bored softnet1 16855 190997 0 0 3 0x14200 bored softnet0 265 76943 0 0 3 0x14200 bored systqmp 25209 49121 0 0 3 0x14200 bored systq 51247 52482 0 0 3 0x14200 tmoslp softclockmp 98827 57266 0 0 3 0x40014200 tmoslp softclock 35951 27935 0 0 3 0x40014200 idle0 1 237587 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 82650 (syz-executor.6) thread 0xffff80002f0d7020 (498563) exclusive rwlock vcpu r = 0 (0xffff8000373acbb8) #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+0x673 mi_syscall sys/sys/syscall_mi.h:182 [inline] #6 syscall+0x673 sys/arch/amd64/amd64/trap.c:591 #7 Xsyscall+0x128 Process 62005 (syz-executor.1) thread 0xffff80002f0d8ab0 (268141) exclusive rrwlock inode r = 0 (0xfffffd80640b52c8) #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 vget+0x200 sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314 #8 ufs_lookup+0x1323 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #13 syscall+0x5f0 mi_syscall sys/sys/syscall_mi.h:182 [inline] #13 syscall+0x5f0 sys/arch/amd64/amd64/trap.c:591 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806eb3d700) #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 vget+0x200 sys/kern/vfs_subr.c:676 #6 cache_lookup+0x2b4 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1ac sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566 #10 namei+0x55a sys/kern/vfs_lookup.c:250 #11 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #12 syscall+0x5f0 mi_syscall sys/sys/syscall_mi.h:182 [inline] #12 syscall+0x5f0 sys/arch/amd64/amd64/trap.c:591 #13 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10243 6897K 7240K 166960K 36978 0 pcb 15 18K 20K 166960K 689 0 rtable 179 13K 15K 166960K 1079 0 pf 36 10K 10K 166960K 277 0 ifaddr 38 14K 17K 166960K 199 0 ifgroup 63 2K 2K 166960K 427 0 sysctl 4 1K 1K 166960K 4 0 counters 68 36K 37K 166960K 260 0 ioctlops 0 0K 4K 166960K 1812 0 iov 0 0K 32K 166960K 986 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1442 90K 90K 166960K 8288 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 117 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 1255 0 dirhash 12 2K 3K 166960K 405 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 16 57K 85K 166960K 10881 0 sigio 1 0K 0K 166960K 207 0 proc 74 91K 128K 166960K 1378 0 subproc 104 6K 6K 166960K 299 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 539 0 in_multi 66 4K 7K 166960K 394 0 ether_multi 1 0K 0K 166960K 16 0 mrt 1 0K 0K 166960K 13 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 1603 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 pagedep 1 8K 8K 166960K 1 0 inodedep 1 32K 32K 166960K 1 0 newblk 1 0K 0K 166960K 1 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 483 312K 313K 166960K 107880 0 UVM aobj 131 4K 4K 166960K 137 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 267 0 NDP 14 0K 2K 166960K 159 0 temp 74 6712K 6840K 166960K 68919 0 kqueue 12 18K 26K 166960K 650 0 SYN cache 2 16K 16K 166960K 2 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 120 558 0 555 8 7 1 3 0 8 0 rtentry 112 352 0 274 4 0 4 4 0 8 0 unpcb 144 6806 0 6786 78 72 6 10 0 8 5 syncache 312 87 0 87 18 17 1 1 0 8 1 tcpqe 32 109 0 109 14 13 1 1 0 8 1 tcpcb 808 2603 0 2572 80 70 10 12 0 8 6 arp 120 67 0 54 1 0 1 1 0 8 0 ipq 40 6 0 6 1 1 0 1 0 8 0 ipqe 40 18 0 18 1 1 0 1 0 8 0 inpcb 368 5779 0 5742 90 80 10 15 0 8 6 nd6 136 79 0 64 1 0 1 1 0 8 0 pkpcb 40 19 0 19 6 6 0 1 0 8 0 kcovpl 48 23 0 15 1 0 1 1 0 8 0 ppxss 1256 29 0 29 9 9 0 1 0 8 0 pffrag 232 24 0 23 2 1 1 1 0 482 0 pffrnode 88 24 0 23 2 1 1 1 0 8 0 pffrent 40 74 0 73 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 24 319 0 297 1 0 1 1 0 8 0 pfstkey 128 319 0 297 3 1 2 2 0 8 0 pfstate 376 319 0 297 11 7 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 1269 0 937 40 19 21 30 0 8 0 art_table 32 1270 0 937 4 0 4 4 0 8 0 art_node 16 334 0 263 1 0 1 1 0 8 0 sysvmsgpl 40 85 0 77 1 0 1 1 0 8 0 semapl 112 1251 0 1241 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 279 0 262 3 0 3 3 0 8 0 dino2pl 256 16048 0 14562 94 0 94 94 0 8 0 ffsino 272 16048 0 14562 100 0 100 100 0 8 0 nchpl 144 29891 0 28235 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 102788 0 102788 10 9 1 2 0 8 1 percpumem 16 144 0 96 1 0 1 1 0 8 0 vcpupl 2048 44 0 0 6 0 6 6 0 8 0 vmpool 696 53 0 9 4 0 4 4 0 8 0 kstatmem 264 220 0 192 3 1 2 3 0 8 0 scxspl 216 88054 0 88054 22 21 1 8 1 8 1 plimitpl 152 1341 0 1325 1 0 1 1 0 8 0 sigapl 424 11337 0 11268 18 9 9 9 0 8 1 futexpl 64 86806 0 86803 3 2 1 1 0 8 0 knotepl 120 691 0 0 19 1 18 19 0 8 0 kqueuepl 216 1624 0 1615 24 23 1 8 0 8 0 pipepl 320 1351 0 1321 45 42 3 8 0 8 0 fdescpl 496 11157 0 11128 12 7 5 5 0 8 1 filepl 152 56279 0 56025 117 99 18 21 0 8 8 lockfpl 104 2516 0 2514 4 3 1 2 0 8 0 lockfspl 48 962 0 960 1 0 1 1 0 8 0 sessionpl 144 39 0 22 1 0 1 1 0 8 0 pgrppl 48 248 0 231 1 0 1 1 0 8 0 ucredpl 104 7372 0 7360 1 0 1 1 0 8 0 zombiepl 144 11268 0 11268 1 0 1 1 0 8 1 processpl 1136 11337 0 11268 8 2 6 6 0 8 0 procpl 680 30141 0 30049 11 2 9 10 0 8 0 srpgc 96 28 0 28 11 11 0 1 0 8 0 sosppl 168 93 0 90 11 10 1 1 0 8 0 sockpl 488 13176 0 13119 286 262 24 36 0 8 16 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 19 0 0 3 1 2 3 0 8 0 mcl12k 12288 28 0 0 2 0 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 19 0 0 3 0 3 3 0 8 0 mcl4k 4096 49 0 0 4 0 4 4 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 311 0 0 33 6 27 33 0 8 0 mtagpl 96 891 0 0 16 0 16 16 0 8 0 mbufpl 256 1279 0 0 69 0 69 69 0 8 0 bufpl 288 18398 0 12080 452 0 452 452 0 8 0 anonpl 24 1156484 0 1142633 179 68 111 122 0 186 0 amapchunkpl 152 341700 0 340735 95 53 42 53 0 158 2 amappl16 200 24600 0 24142 118 92 26 37 0 8 0 amappl15 192 11 0 11 2 2 0 1 0 8 0 amappl14 184 224 0 206 2 1 1 2 0 8 0 amappl13 176 19 0 19 2 2 0 1 0 8 0 amappl12 168 12089 0 12053 3 1 2 2 0 8 0 amappl11 160 76 0 62 1 0 1 1 0 8 0 amappl10 152 51 0 40 1 0 1 1 0 8 0 amappl9 144 203 0 202 2 1 1 1 0 8 0 amappl8 136 555 0 423 5 0 5 5 0 8 0 amappl7 128 256 0 230 2 0 2 2 0 8 0 amappl6 120 551 0 537 1 0 1 1 0 8 0 amappl5 112 279 0 267 1 0 1 1 0 8 0 amappl4 104 693 0 659 2 1 1 2 0 8 0 amappl3 96 66964 0 66867 5 2 3 4 0 8 0 amappl2 88 12154 0 12074 3 1 2 3 0 8 0 amappl1 80 48673 0 48113 23 10 13 23 0 8 0 amappl 88 106898 0 106621 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 11211 0 11138 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 11211 0 11138 1 0 1 1 0 8 0 vmmpekpl 168 83233 0 83165 4 0 4 4 0 8 0 vmmpepl 168 665005 0 662477 302 160 142 144 0 357 20 vmsppl 448 11210 0 11138 10 1 9 9 0 8 0 rwobjpl 56 168227 0 160493 125 14 111 113 0 8 0 pdppl 4096 22429 0 22320 479 366 113 115 0 8 4 pvpl 32 42952 0 0 348 1 347 347 0 265 0 pmappl 248 11210 0 11138 5 0 5 5 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1521 0 582 27 0 27 27 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff8000371f7d30) at vm_run+0x169 vmmioctl(a00,c0205602,ffff8000371f7d30,1,ffff80002f0d7020) at vmmioctl+0x2a1 sys/dev/vmm/vmm.c:242 VOP_IOCTL(fffffd806ed976c8,c0205602,ffff8000371f7d30,1,fffffd807f7d7888,ffff80002f0d7020) at VOP_IOCTL+0x97 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8069c2a4d8,c0205602,ffff8000371f7d30,ffff80002f0d7020) at vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002f0d7020,ffff8000371f7e40,ffff8000371f7e90) at sys_ioctl+0x4a2 syscall(ffff8000371f7f40) at syscall+0x673 mi_syscall sys/sys/syscall_mi.h:182 [inline] syscall(ffff8000371f7f40) at syscall+0x673 sys/arch/amd64/amd64/trap.c:591 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa63bf0a6660, 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 end of kernel end trace frame: 0x76ea213d2690, count: -3