login: kernel: protection fault trap, code=0 Stopped at done_flush+0x38: movl %eax,%dr6 ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace done_flush() at done_flush+0x38 vm_run(ffff80002e91e1a0) at vm_run+0x163 vmmioctl(a00,c0205602,ffff80002e91e1a0,1,ffff800023140d50) at vmmioctl+0x299 sys/dev/vmm/vmm.c:242 VOP_IOCTL(fffffd806ec0e0d8,c0205602,ffff80002e91e1a0,1,fffffd807f7d7888,ffff800023140d50) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80756c73d8,c0205602,ffff80002e91e1a0,ffff800023140d50) at vn_ioctl+0xbb sys/kern/vfs_vnops.c:525 sys_ioctl(ffff800023140d50,ffff80002e91e2b0,ffff80002e91e300) at sys_ioctl+0x49e syscall(ffff80002e91e380) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb83eae324b0, count: -8 ddb> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800027fcb630 rbp 0xffff80002e91def0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xfffffffffffffffb r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0xcf322c7794d6b488 r11 0xff970dc69e1fcbb9 r12 0xffff800027fcb3a8 r13 0xffff800027fcb358 r14 0xffff800027fcb000 r15 0xffff80002e91e1a0 rip 0xffffffff8137b3cb done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80002e91dd56 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor.1) tid=494744 pid=89533 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=79, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff800023140558,0xffff80002313f578 process=0xffff8000ffff87e0 user=0xffff80002e919000, vmspace=0xfffffd80692c5198 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 73770 422460 60657 0 2 0 syz-executor.5 73770 462367 60657 0 3 0x4000080 fsleep syz-executor.5 89533 404240 38911 0 2 0 syz-executor.1 *89533 494744 38911 0 7 0x4000000 syz-executor.1 30050 479156 9773 0 3 0x80 nanoslp syz-executor.7 30050 37259 9773 0 3 0x4000080 fsleep syz-executor.7 91445 364351 81845 0 2 0 syz-executor.6 91445 467815 81845 0 3 0x4000080 fsleep syz-executor.6 70837 241967 84699 0 2 0 syz-executor.4 70837 303616 84699 0 2 0x4000000 syz-executor.4 80940 523831 0 0 3 0x14200 acct acct 95837 89021 0 0 3 0x14280 nfsidl nfsio 34864 39309 0 0 3 0x14280 nfsidl nfsio 32545 447381 0 0 3 0x14280 nfsidl nfsio 99644 343574 0 0 3 0x14280 nfsidl nfsio 61527 252803 0 0 3 0x14280 nfsidl nfsio 50752 10809 0 0 3 0x14280 nfsidl nfsio 61844 413584 0 0 3 0x14280 nfsidl nfsio 32830 316669 0 0 3 0x14280 nfsidl nfsio 76226 69714 0 0 3 0x14280 nfsidl nfsio 1856 38974 0 0 3 0x14280 nfsidl nfsio 54604 159772 0 0 3 0x14280 nfsidl nfsio 18302 437729 0 0 3 0x14280 nfsidl nfsio 86066 71762 0 0 3 0x14280 nfsidl nfsio 80700 340061 0 0 3 0x14280 nfsidl nfsio 81909 310234 0 0 3 0x14280 nfsidl nfsio 24908 88959 0 0 3 0x14280 nfsidl nfsio 92689 504498 0 0 3 0x14280 nfsidl nfsio 54059 31641 0 0 3 0x14280 nfsidl nfsio 66893 444419 0 0 3 0x14280 nfsidl nfsio 27097 318283 0 0 3 0x14280 nfsidl nfsio 14862 469464 1 0 3 0x100083 ttyin getty 9773 517917 26426 0 2 0x482 syz-executor.7 81845 1388 26426 0 3 0x82 nanoslp syz-executor.6 60657 486469 26426 0 3 0x82 nanoslp syz-executor.5 84699 420888 26426 0 3 0x82 nanoslp syz-executor.4 38911 212243 26426 0 3 0x82 nanoslp syz-executor.1 56782 378597 0 0 3 0x14200 bored sosplice 15108 90164 26426 0 3 0x82 nanoslp syz-executor.0 23427 417907 26426 0 2 0x2 syz-executor.3 53324 238391 26426 0 3 0x82 piperd syz-executor.2 26426 269200 14693 0 3 0x2000082 wait syz-fuzzer 26426 276118 14693 0 3 0x6000082 nanoslp syz-fuzzer 26426 442145 14693 0 3 0x6000082 thrsleep syz-fuzzer 26426 94388 14693 0 3 0x6000082 wait syz-fuzzer 26426 204219 14693 0 3 0x6000082 wait syz-fuzzer 26426 50300 14693 0 3 0x6000082 thrsleep syz-fuzzer 26426 482558 14693 0 3 0x6000082 wait syz-fuzzer 26426 322721 14693 0 3 0x6000082 wait syz-fuzzer 26426 416722 14693 0 3 0x6000082 kqread syz-fuzzer 26426 359118 14693 0 3 0x6000082 thrsleep syz-fuzzer 26426 189445 14693 0 3 0x6000082 wait syz-fuzzer 26426 336730 14693 0 3 0x6000082 thrsleep syz-fuzzer 26426 293904 14693 0 3 0x6000082 wait syz-fuzzer 26426 379034 14693 0 3 0x6000082 wait syz-fuzzer 14693 95588 84786 0 3 0x10008a sigsusp ksh 84786 208912 94744 0 3 0x9a kqread sshd 94744 475018 1 0 3 0x88 kqread sshd 70224 481713 76278 73 3 0x1100090 kqread syslogd 76278 478987 1 0 3 0x100082 netio syslogd 52000 263712 1 0 3 0x100080 kqread resolvd 23850 255495 8189 77 3 0x100092 kqread dhcpleased 62015 45572 8189 77 3 0x100092 kqread dhcpleased 8189 39792 1 0 3 0x80 kqread dhcpleased 51147 310400 0 0 3 0x14200 bored smr 92909 328926 0 0 2 0x14200 zerothread 35788 205061 0 0 3 0x14200 aiodoned aiodoned 39465 347430 0 0 3 0x14200 syncer update 86051 369190 0 0 3 0x14200 cleaner cleaner 56994 310604 0 0 3 0x14200 reaper reaper 90254 392339 0 0 3 0x14200 pgdaemon pagedaemon 5687 248148 0 0 3 0x14200 bored viomb 85048 86735 0 0 3 0x40014200 acpi0 acpi0 81526 70483 0 0 3 0x14200 bored softnet3 64655 201198 0 0 3 0x14200 bored softnet2 33246 79748 0 0 3 0x14200 bored softnet1 19172 489175 0 0 3 0x14200 bored softnet0 73990 13730 0 0 3 0x14200 bored systqmp 4746 210106 0 0 3 0x14200 bored systq 58087 411171 0 0 2 0x40014200 softclock 28874 425488 0 0 3 0x40014200 idle0 1 179801 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10184 6421K 7549K 78643K 16265 0 pcb 13 16K 18K 78643K 422 0 rtable 248 15K 15K 78643K 1017 0 pf 29 8K 9K 78643K 249 0 ifaddr 43 12K 13K 78643K 178 0 ifgroup 50 2K 2K 78643K 372 0 sysctl 3 0K 0K 78643K 3 0 counters 28 17K 17K 78643K 122 0 ioctlops 0 0K 2K 78643K 439 0 iov 0 0K 16K 78643K 1054 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1487 93K 93K 78643K 5331 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 103 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 655 0 dirhash 12 2K 2K 78643K 27 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 77K 78643K 8322 0 sigio 0 0K 0K 78643K 175 0 proc 58 59K 83K 78643K 1129 0 subproc 104 6K 7K 78643K 247 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1034 0 in_multi 99 7K 7K 78643K 306 0 ether_multi 1 0K 0K 78643K 7 0 mrt 1 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 127 572K 572K 78643K 127 0 exec 0 0K 1K 78643K 1475 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 8 62K 64K 78643K 10 0 UVM amap 403 256K 260K 78643K 78341 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 271 0 NDP 11 0K 2K 78643K 143 0 temp 74 5912K 5992K 78643K 55952 0 kqueue 12 18K 30K 78643K 508 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 400 0 397 5 4 1 3 0 8 0 rtentry 112 288 0 174 4 0 4 4 0 8 0 unpcb 144 7957 0 7944 84 80 4 10 0 8 3 syncache 312 78 0 78 10 9 1 1 0 8 1 sackhl 24 3 0 3 3 3 0 1 0 8 0 tcpqe 32 232 0 232 9 9 0 1 0 8 0 tcpcb 808 3006 0 2995 79 74 5 11 0 8 3 arp 88 42 0 23 1 0 1 1 0 8 0 inpcb 336 6360 0 6340 100 92 8 12 0 8 6 nd6 104 65 0 38 1 0 1 1 0 8 0 pkpcb 40 64 0 64 7 7 0 1 0 8 0 kcovpl 48 19 0 11 1 0 1 1 0 8 0 ppxss 1160 43 0 43 8 8 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 992 0 511 31 0 31 31 0 8 0 art_table 32 993 0 511 5 1 4 5 0 8 0 art_node 16 241 0 137 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 7 1 0 1 1 0 8 0 semapl 112 653 0 643 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 12722 0 11243 93 0 93 93 0 8 0 ffsino 240 12722 0 11243 88 0 88 88 0 8 0 nchpl 144 24085 0 23584 63 41 22 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 89347 0 89346 4 3 1 2 0 8 0 vcpupl 2048 34 0 0 5 0 5 5 0 8 0 vmpool 664 58 0 24 3 0 3 3 0 8 0 kstatmem 264 210 0 188 2 0 2 2 0 8 0 scxspl 216 66009 0 66009 20 19 1 8 1 8 1 plimitpl 152 1197 0 1182 1 0 1 1 0 8 0 sigapl 424 8647 0 8582 9 1 8 8 0 8 0 futexpl 64 81553 0 81550 1 0 1 1 0 8 0 knotepl 120 72233 0 72153 4 0 4 4 0 8 0 kqueuepl 184 1036 0 1028 11 10 1 4 0 8 0 pipepl 288 1119 0 1091 21 18 3 7 0 8 0 fdescpl 432 8588 0 8562 4 0 4 4 0 8 0 filepl 120 60648 0 60413 75 65 10 15 0 8 1 lockfpl 104 3525 0 3523 7 6 1 2 0 8 0 lockfspl 48 1156 0 1154 1 0 1 1 0 8 0 sessionpl 144 39 0 23 1 0 1 1 0 8 0 pgrppl 48 67 0 51 1 0 1 1 0 8 0 ucredpl 104 8582 0 8572 1 0 1 1 0 8 0 zombiepl 144 8583 0 8582 2 1 1 1 0 8 0 processpl 1008 8647 0 8582 14 5 9 9 0 8 0 procpl 680 20911 0 20828 14 6 8 9 0 8 0 sosppl 168 112 0 110 11 10 1 1 0 8 0 sockpl 456 14787 0 14757 342 330 12 33 0 8 7 mcl64k 65536 392 0 392 14 13 1 1 0 8 1 mcl16k 16384 174 0 174 20 19 1 1 0 8 1 mcl12k 12288 394 0 394 15 14 1 1 0 8 1 mcl9k 9216 562 0 562 15 14 1 1 0 8 1 mcl8k 8192 538 0 538 16 15 1 3 0 8 1 mcl4k 4096 867 0 867 8 7 1 1 0 8 1 mcl2k2 2112 54 0 54 18 17 1 1 0 8 1 mcl2k 2048 81575 0 81527 50 42 8 32 0 8 1 mtagpl 96 152 0 140 5 3 2 4 0 8 0 mbufpl 256 221437 0 221237 248 229 19 126 0 8 0 bufpl 288 16682 0 10285 458 0 458 458 0 8 0 anonpl 24 840797 0 827100 151 43 108 108 0 188 15 amapchunkpl 152 246522 0 245697 74 38 36 39 0 158 1 amappl16 200 17036 0 16543 67 32 35 39 0 8 8 amappl15 192 15 0 14 1 0 1 1 0 8 0 amappl14 184 189 0 177 2 1 1 2 0 8 0 amappl13 176 14 0 14 3 3 0 1 0 8 0 amappl12 168 9386 0 9356 2 0 2 2 0 8 0 amappl11 160 46 0 35 1 0 1 1 0 8 0 amappl10 152 83 0 69 1 0 1 1 0 8 0 amappl9 144 176 0 175 1 0 1 1 0 8 0 amappl8 136 417 0 319 4 0 4 4 0 8 0 amappl7 128 228 0 205 2 0 2 2 0 8 0 amappl6 120 489 0 476 1 0 1 1 0 8 0 amappl5 112 314 0 306 1 0 1 1 0 8 0 amappl4 104 561 0 538 2 1 1 2 0 8 0 amappl3 96 49810 0 49731 3 0 3 3 0 8 0 amappl2 88 9357 0 9284 3 1 2 3 0 8 0 amappl1 80 39455 0 38952 22 10 12 22 0 8 0 amappl 88 77508 0 77276 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 8646 0 8586 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8646 0 8586 1 0 1 1 0 8 0 vmmpekpl 168 61584 0 61519 4 0 4 4 0 8 0 vmmpepl 168 508794 0 506496 238 124 114 128 0 357 6 vmsppl 368 8645 0 8586 7 1 6 6 0 8 0 rwobjpl 24 125267 0 117668 48 0 48 48 0 8 0 pdppl 4096 17298 0 17206 388 292 96 98 0 8 4 pvpl 32 2237284 0 2218194 450 257 193 361 0 265 28 pmappl 216 8645 0 8586 4 0 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1661 0 822 28 1 27 28 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace done_flush() at done_flush+0x38 vm_run(ffff80002e91e1a0) at vm_run+0x163 vmmioctl(a00,c0205602,ffff80002e91e1a0,1,ffff800023140d50) at vmmioctl+0x299 sys/dev/vmm/vmm.c:242 VOP_IOCTL(fffffd806ec0e0d8,c0205602,ffff80002e91e1a0,1,fffffd807f7d7888,ffff800023140d50) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80756c73d8,c0205602,ffff80002e91e1a0,ffff800023140d50) at vn_ioctl+0xbb sys/kern/vfs_vnops.c:525 sys_ioctl(ffff800023140d50,ffff80002e91e2b0,ffff80002e91e300) at sys_ioctl+0x49e syscall(ffff80002e91e380) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb83eae324b0, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace done_flush() at done_flush+0x38 vm_run(ffff80002e91e1a0) at vm_run+0x163 vmmioctl(a00,c0205602,ffff80002e91e1a0,1,ffff800023140d50) at vmmioctl+0x299 sys/dev/vmm/vmm.c:242 VOP_IOCTL(fffffd806ec0e0d8,c0205602,ffff80002e91e1a0,1,fffffd807f7d7888,ffff800023140d50) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80756c73d8,c0205602,ffff80002e91e1a0,ffff800023140d50) at vn_ioctl+0xbb sys/kern/vfs_vnops.c:525 sys_ioctl(ffff800023140d50,ffff80002e91e2b0,ffff80002e91e300) at sys_ioctl+0x49e syscall(ffff80002e91e380) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb83eae324b0, count: -8