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(ffff800027c37120) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4295 vmmioctl(a00,c0205602,ffff800027c37120,1,ffff80002125aa88) at vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 VOP_IOCTL(fffffd806ef70130,c0205602,ffff800027c37120,1,fffffd807f7d71e0,ffff80002125aa88) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067d56018,c0205602,ffff800027c37120,ffff80002125aa88) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002125aa88,ffff800027c37238,ffff800027c37290) at sys_ioctl+0x4a2 syscall(ffff800027c37300) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027c37300) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x371a8f19640, count: -8 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800027af6e38 rbp 0xffff800027c36e90 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0x126ff9f55eecfdfe r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0x6d2df8cdc9893a27 r11 0x88829e78a9e1721e r12 0xffffffff8280c970 dt_prov_static r13 0x246 r14 0xffff800027af6800 r15 0xffff800027c37120 rip 0xffffffff81759070 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff800027c36ce6 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor.1) pid=492931 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff80002125b508,0xffffffff829bdbb8 process=0xffff8000246ef620 user=0xffff800027c32000, vmspace=0xfffffd8072c7ee90 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 64234 78000 44874 0 2 0 syz-executor.1 *64234 492931 44874 0 7 0x4000000 syz-executor.1 34737 56506 70812 0 2 0 syz-executor.0 89541 511451 0 0 3 0x14200 acct acct 44874 439310 42363 0 3 0x82 nanoslp syz-executor.1 70812 62317 42363 0 3 0x82 nanoslp syz-executor.0 36140 145823 42363 0 3 0x82 nanoslp syz-executor.3 47712 124116 42363 0 2 0x2 syz-executor.2 3552 286318 1 0 3 0x100083 ttyopn getty 42491 190426 0 0 3 0x14280 nfsidl nfsio 39885 212450 0 0 3 0x14280 nfsidl nfsio 65551 32269 0 0 3 0x14280 nfsidl nfsio 10964 207732 0 0 3 0x14280 nfsidl nfsio 18833 61366 0 0 3 0x14280 nfsidl nfsio 70780 376025 0 0 3 0x14280 nfsidl nfsio 13381 446183 0 0 3 0x14280 nfsidl nfsio 53682 511622 0 0 3 0x14280 nfsidl nfsio 64693 337531 0 0 3 0x14280 nfsidl nfsio 78679 309517 0 0 3 0x14280 nfsidl nfsio 31121 399960 0 0 3 0x14280 nfsidl nfsio 39508 391718 0 0 3 0x14280 nfsidl nfsio 4682 209019 0 0 3 0x14280 nfsidl nfsio 58188 477734 0 0 3 0x14280 nfsidl nfsio 43434 334318 0 0 3 0x14280 nfsidl nfsio 11635 82707 0 0 3 0x14280 nfsidl nfsio 60831 371388 0 0 3 0x14280 nfsidl nfsio 91556 224216 0 0 3 0x14280 nfsidl nfsio 80486 522955 0 0 3 0x14280 nfsidl nfsio 24822 159931 0 0 3 0x14280 nfsidl nfsio 60442 162666 0 0 3 0x14200 bored sosplice 42363 26189 33720 0 3 0x82 thrsleep syz-fuzzer 42363 434512 33720 0 3 0x4000082 thrsleep syz-fuzzer 42363 327234 33720 0 3 0x4000082 thrsleep syz-fuzzer 42363 14368 33720 0 3 0x4000082 kqread syz-fuzzer 42363 80062 33720 0 3 0x4000082 thrsleep syz-fuzzer 42363 231771 33720 0 3 0x4000082 thrsleep syz-fuzzer 42363 307372 33720 0 3 0x4000082 thrsleep syz-fuzzer 42363 171595 33720 0 3 0x4000082 thrsleep syz-fuzzer 33720 520957 44441 0 3 0x10008a sigsusp ksh 44441 53846 81770 0 3 0x9a poll sshd 81770 334689 1 0 3 0x88 poll sshd 93393 19373 98867 74 3 0x100092 bpf pflogd 98867 268249 1 0 3 0x80 netio pflogd 81709 183615 58524 73 3 0x100090 kqread syslogd 58524 446874 1 0 3 0x100082 netio syslogd 38064 106035 1 0 3 0x100080 kqread resolvd 75780 436866 25302 77 3 0x100092 kqread dhcpleased 58124 231719 25302 77 3 0x100092 kqread dhcpleased 25302 79967 1 0 3 0x80 kqread dhcpleased 68850 478655 0 0 3 0x14200 bored smr 80613 510830 0 0 2 0x14200 zerothread 69910 262845 0 0 3 0x14200 aiodoned aiodoned 18015 397190 0 0 3 0x14200 syncer update 27955 20397 0 0 3 0x14200 cleaner cleaner 82300 398590 0 0 7 0x14200 reaper 22844 469023 0 0 3 0x14200 pgdaemon pagedaemon 73519 10407 0 0 3 0x14200 bored viomb 26303 256897 0 0 3 0x40014200 acpi0 acpi0 69223 502280 0 0 3 0x40014200 idle1 68856 281105 0 0 3 0x14200 bored softnet 36808 463413 0 0 3 0x14200 bored systqmp 24331 347124 0 0 3 0x14200 bored systq 90223 364573 0 0 3 0x40014200 bored softclock 64938 483197 0 0 3 0x40014200 idle0 1 36624 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 64234 (syz-executor.1) thread 0xffff80002125aa88 (492931) exclusive rwlock vcpu r = 0 (0xffff800027af6bb0) #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 47712 (syz-executor.2) thread 0xffff80002125b268 (124116) exclusive rrwlock inode r = 0 (0xfffffd8078fe05f8) #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 (0xfffffd8068ba8818) #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 Process 82300 (reaper) thread 0xffff800021148d20 (398590) exclusive rwlock amaplk r = 0 (0xfffffd80723f4ef8) #0 witness_lock+0x44d #1 amap_unref+0x2b sys/uvm/uvm_amap.c:1365 #2 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1599 #3 uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 #4 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 #5 reaper+0x18b sys/kern/kern_exit.c:462 #6 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10231 6510K 7416K 78643K 64022 0 pcb 13 24K 28K 78643K 3387 0 rtable 196 29K 32K 78643K 7922 0 ifaddr 116 32K 36K 78643K 2368 0 sysctl 3 1K 1K 78643K 3 0 counters 50 34K 35K 78643K 564 0 ioctlops 0 0K 6K 78643K 6424 0 iov 0 0K 28K 78643K 2014 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1488 93K 94K 78643K 16889 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 177 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 2203 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 8 25K 49K 78643K 22073 0 sigio 0 0K 0K 78643K 124 0 proc 71 87K 111K 78643K 3725 0 subproc 52 3K 3K 78643K 1312 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1684 0 in_multi 32 2K 3K 78643K 2135 0 ether_multi 1 0K 0K 78643K 318 0 mrt 2 0K 0K 78643K 72 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 349 1553K 1553K 78643K 349 0 exec 0 0K 2K 78643K 4677 0 pfkey data 0 0K 1K 78643K 14 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 613 1707K 1707K 78643K 280494 0 UVM aobj 131 9K 9K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1992 0 NDP 12 0K 1K 78643K 525 0 temp 130 4226K 8307K 78643K 197260 0 kqueue 10 14K 22K 78643K 805 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 1622 0 1619 21 20 1 5 0 8 0 rtentry 112 1842 0 1796 2 0 2 2 0 8 0 unpcb 136 10404 0 10389 116 113 3 8 0 8 2 syncache 296 18 0 18 5 5 0 1 0 8 0 tcpqe 32 85 0 85 2 2 0 1 0 8 0 tcpcb 736 10792 0 10788 318 304 14 26 0 8 13 arp 120 281 0 272 1 0 1 1 0 8 0 inpcb 304 27518 0 27511 359 350 9 20 0 8 8 rttmr 72 14 0 14 4 4 0 1 0 8 0 nd6 48 365 0 358 1 0 1 1 0 8 0 pkpcb 40 212 0 212 20 20 0 1 0 8 0 kcovpl 48 96 0 92 1 0 1 1 0 8 0 ppxss 1248 51 0 51 14 14 0 1 0 8 0 pfstscr 40 202 0 202 9 9 0 1 0 8 0 pffrag 232 81 0 79 10 9 1 1 0 482 0 pffrnode 88 81 0 79 10 9 1 1 0 8 0 pffrent 40 1011 0 1009 14 13 1 1 0 8 0 pfosfp 40 1447 0 1021 5 0 5 5 0 8 0 pfosfpen 112 1447 0 726 21 0 21 21 0 8 0 pfrktable 1344 1277 0 1245 11 8 3 4 0 8 0 pftag 88 31 0 26 1 0 1 1 0 8 0 pfqueue 264 6 0 3 1 0 1 1 0 8 0 pfstitem 24 101 0 99 1 0 1 1 0 8 0 pfstkey 112 423 0 421 2 1 1 2 0 8 0 pfstate 320 291 0 289 4 3 1 4 0 8 0 pfsrctr 152 53 0 48 3 2 1 1 0 8 0 pfrule 1360 2046 0 1838 22 4 18 18 0 8 0 art_heap8 4096 4 0 2 4 2 2 2 0 8 0 art_heap4 256 6734 0 6560 47 35 12 18 0 8 0 art_table 32 6738 0 6562 6 3 3 3 0 8 0 art_node 16 1832 0 1793 1 0 1 1 0 8 0 sysvmsgpl 40 50 0 47 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 2201 0 2191 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 29441 0 27966 93 0 93 93 0 8 0 ffsino 272 29441 0 27966 99 0 99 99 0 8 0 nchpl 144 60179 0 58582 61 0 61 61 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 220690 0 220689 3 2 1 1 0 8 0 percpumem 16 294 0 257 1 0 1 1 0 8 0 vcpupl 2048 341 0 0 43 0 43 43 0 8 0 vmpool 560 459 0 118 25 0 25 25 0 8 0 pfiaddrpl 120 427 0 362 7 5 2 3 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 169491 0 169491 34 33 1 8 0 8 1 plimitpl 152 2301 0 2290 1 0 1 1 0 8 0 sigapl 424 22062 0 22005 7 0 7 7 0 8 0 futexpl 64 202971 0 202971 4 3 1 1 0 8 1 knotepl 112 248 0 0 3 0 3 3 0 8 0 kqueuepl 216 4642 0 4636 95 91 4 8 0 8 3 pipepl 336 3559 0 3542 110 107 3 10 0 8 1 fdescpl 496 22023 0 22002 5 2 3 4 0 8 0 filepl 152 159498 0 159345 262 248 14 18 0 8 8 lockfpl 104 8555 0 8553 17 16 1 2 0 8 0 lockfspl 48 2741 0 2739 1 0 1 1 0 8 0 sessionpl 144 114 0 101 1 0 1 1 0 8 0 pgrppl 48 157 0 144 1 0 1 1 0 8 0 ucredpl 96 17396 0 17384 1 0 1 1 0 8 0 zombiepl 144 22005 0 22004 1 0 1 1 0 8 0 processpl 1064 22062 0 22004 4 0 4 4 0 8 0 procpl 672 65219 0 65153 23 16 7 8 0 8 0 srpgc 96 120 0 120 23 23 0 1 0 8 0 sosppl 168 145 0 145 27 27 0 1 0 8 0 sockpl 480 39982 0 39957 849 837 12 34 0 8 8 mcl64k 65536 26 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 52 0 0 2 0 2 2 0 8 0 mcl9k 9216 37 0 0 2 0 2 2 0 8 0 mcl8k 8192 33 0 0 3 0 3 3 0 8 0 mcl4k 4096 57 0 0 4 1 3 3 0 8 0 mcl2k2 2112 9 0 0 1 0 1 1 0 8 0 mcl2k 2048 347 0 0 30 9 21 30 0 8 0 mtagpl 96 1262 0 0 17 0 17 17 0 8 0 mbufpl 256 5360 0 0 306 0 306 306 0 8 0 bufpl 288 35584 0 29239 454 0 454 454 0 8 0 anonpl 24 6301088 0 6279636 415 273 142 163 0 186 0 amapchunkpl 152 717208 0 716467 225 193 32 45 0 158 1 amappl16 200 58606 0 57736 267 217 50 65 0 8 3 amappl15 192 4117 0 4115 1 0 1 1 0 8 0 amappl14 184 5259 0 5256 4 3 1 1 0 8 0 amappl13 176 2984 0 2980 1 0 1 1 0 8 0 amappl12 168 2304 0 2299 1 0 1 1 0 8 0 amappl11 160 979 0 964 1 0 1 1 0 8 0 amappl10 152 1842 0 1832 1 0 1 1 0 8 0 amappl9 144 3678 0 3673 1 0 1 1 0 8 0 amappl8 136 6210 0 6089 5 0 5 5 0 8 0 amappl7 128 4417 0 4405 1 0 1 1 0 8 0 amappl6 120 3929 0 3903 1 0 1 1 0 8 0 amappl5 112 17475 0 17456 1 0 1 1 0 8 0 amappl4 104 7515 0 7481 1 0 1 1 0 8 0 amappl3 96 5243 0 5225 1 0 1 1 0 8 0 amappl2 88 5354 0 5286 2 0 2 2 0 8 0 amappl1 80 406177 0 405702 13 2 11 13 0 8 0 amappl 88 278114 0 277796 10 2 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 22482 0 22120 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 22482 0 22120 3 0 3 3 0 8 0 vmmpekpl 168 149373 0 149306 4 0 4 4 0 8 0 vmmpepl 168 2049877 0 2046849 707 543 164 168 0 357 22 vmsppl 368 22481 0 22119 35 1 34 34 0 8 0 rwobjpl 56 496603 0 488625 148 34 114 117 0 8 0 pdppl 4096 44972 0 44579 488 92 396 396 0 8 3 pvpl 32 10580268 0 10557846 623 426 197 254 0 265 0 pmappl 248 22481 0 22119 24 1 23 23 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 2072 0 560 45 1 44 44 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff800027c37120) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4295 vmmioctl(a00,c0205602,ffff800027c37120,1,ffff80002125aa88) at vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 VOP_IOCTL(fffffd806ef70130,c0205602,ffff800027c37120,1,fffffd807f7d71e0,ffff80002125aa88) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067d56018,c0205602,ffff800027c37120,ffff80002125aa88) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002125aa88,ffff800027c37238,ffff800027c37290) at sys_ioctl+0x4a2 syscall(ffff800027c37300) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027c37300) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x371a8f19640, 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 splraise(d) at splraise+0x37 sys/arch/amd64/amd64/intr.c:699 witness_lock(ffffffff82840c50,8) at witness_lock+0x166 sys/kern/subr_witness.c:1155 mtx_enter_try(ffffffff82840c40) at mtx_enter_try+0x100 mtx_enter(ffffffff82840c40) at mtx_enter+0x4b sys/kern/kern_lock.c:266 uvm_anfree_list(fffffd8067cee0d8,ffff8000211858f8) at uvm_anfree_list+0xa4 sys/uvm/uvm_anon.c:104 amap_wipeout(fffffd806c6cad20) at amap_wipeout+0x1b1 sys/uvm/uvm_amap.c:504 uvm_unmap_detach(ffff8000211859c0,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1599 uvm_map_teardown(fffffd8072c7e8d0) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 uvmspace_free(fffffd8072c7e8d0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff800021148d20) at reaper+0x18b sys/kern/kern_exit.c:462 end trace frame: 0x0, count: -13