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(ffff80002e7cdbd0) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4463 vmmioctl(a00,c0205602,ffff80002e7cdbd0,2,ffff800029996540) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:656 VOP_IOCTL(fffffd806e8af128,c0205602,ffff80002e7cdbd0,2,fffffd807f7d7660,ffff800029996540) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806ce2bad8,c0205602,ffff80002e7cdbd0,ffff800029996540) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800029996540,ffff80002e7cdce8,ffff80002e7cdd40) at sys_ioctl+0x49e syscall(ffff80002e7cddb0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd081fbb1800, count: -8 ddb> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff80002993a518 rbp 0xffff80002e7cd930 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0x7fffffffffffffff r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0x2d00dbf842d84faf r11 0x370063d61c8fa9ee r12 0xffff80002993a250 r13 0xffffffff828ffd90 dt_prov_static r14 0xffff800029939f00 r15 0xffff80002e7cdbd0 rip 0xffffffff81d7d770 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80002e7cd796 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor.2) pid=427184 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff800029996a80,0xffff800029996fd0 process=0xffff80002168db80 user=0xffff80002e7c8000, vmspace=0xfffffd80684ed338 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 36363 354361 33923 0 2 0 syz-executor.6 46122 193119 24387 0 2 0 syz-executor.2 *46122 427184 24387 0 7 0x4000000 syz-executor.2 93795 193739 90831 0 3 0x80 nanoslp syz-executor.5 93795 167177 90831 0 3 0x4000080 fsleep syz-executor.5 3208 429991 74629 0 2 0 syz-executor.0 3208 342242 74629 0 3 0x4000080 fsleep syz-executor.0 33923 318094 45626 0 3 0x82 nanoslp syz-executor.6 70563 326153 45626 0 2 0x2 syz-executor.3 24387 11600 45626 0 3 0x82 nanoslp syz-executor.2 64599 291375 45626 0 3 0x82 nanoslp syz-executor.1 21572 269209 0 0 3 0x14280 nfsidl nfsio 47615 405481 0 0 3 0x14280 nfsidl nfsio 42858 12473 0 0 3 0x14280 nfsidl nfsio 77785 276227 0 0 3 0x14280 nfsidl nfsio 31250 54188 0 0 3 0x14280 nfsidl nfsio 50358 34140 0 0 3 0x14280 nfsidl nfsio 61047 249658 0 0 3 0x14280 nfsidl nfsio 70973 327690 0 0 3 0x14280 nfsidl nfsio 34737 23358 0 0 3 0x14280 nfsidl nfsio 81578 256489 0 0 3 0x14280 nfsidl nfsio 17423 66320 0 0 3 0x14280 nfsidl nfsio 25146 29611 0 0 3 0x14280 nfsidl nfsio 76667 444517 0 0 3 0x14280 nfsidl nfsio 16632 460680 0 0 3 0x14280 nfsidl nfsio 16881 228679 0 0 3 0x14280 nfsidl nfsio 45650 216761 0 0 3 0x14280 nfsidl nfsio 30614 170775 0 0 3 0x14280 nfsidl nfsio 19493 121610 0 0 3 0x14280 nfsidl nfsio 71399 384102 0 0 3 0x14280 nfsidl nfsio 92858 70863 0 0 3 0x14280 nfsidl nfsio 14111 371079 45626 0 3 0x82 nanoslp syz-executor.7 90831 505945 45626 0 3 0x82 nanoslp syz-executor.5 17869 447619 45626 0 3 0x82 nanoslp syz-executor.4 74629 393697 45626 0 3 0x82 nanoslp syz-executor.0 45626 282045 88177 0 3 0x82 kqread syz-fuzzer 45626 412433 88177 0 3 0x4000082 nanoslp syz-fuzzer 45626 264901 88177 0 3 0x4000082 thrsleep syz-fuzzer 45626 20956 88177 0 3 0x4000082 thrsleep syz-fuzzer 45626 321221 88177 0 3 0x4000082 thrsleep syz-fuzzer 45626 445121 88177 0 3 0x4000082 thrsleep syz-fuzzer 45626 46201 88177 0 3 0x4000082 thrsleep syz-fuzzer 45626 124653 88177 0 3 0x4000082 thrsleep syz-fuzzer 45626 239892 88177 0 3 0x4000082 thrsleep syz-fuzzer 88177 478482 91066 0 3 0x10008a sigsusp ksh 91066 133647 85570 0 3 0x9a kqread sshd 5183 249918 1 0 3 0x100083 ttyin getty 85570 487512 1 0 3 0x88 kqread sshd 74482 122204 22988 73 3 0x1100090 kqread syslogd 22988 27970 1 0 3 0x100082 netio syslogd 80914 123261 1 0 3 0x100080 kqread resolvd 57187 67563 4340 77 3 0x100092 kqread dhcpleased 6598 455035 4340 77 3 0x100092 kqread dhcpleased 4340 10026 1 0 3 0x80 kqread dhcpleased 1682 180779 0 0 3 0x14200 bored smr 62855 161002 0 0 2 0x14200 zerothread 68931 426050 0 0 3 0x14200 aiodoned aiodoned 47655 85340 0 0 3 0x14200 syncer update 80872 275448 0 0 3 0x14200 cleaner cleaner 22085 93927 0 0 3 0x14200 reaper reaper 30757 213274 0 0 3 0x14200 pgdaemon pagedaemon 36207 134844 0 0 3 0x14200 bored viomb 8859 249231 0 0 3 0x40014200 acpi0 acpi0 45250 463728 0 0 3 0x14200 bored softnet 68672 299335 0 0 3 0x14200 bored systqmp 6319 260179 0 0 3 0x14200 bored systq 57272 393219 0 0 3 0x40014200 bored softclock 24106 276330 0 0 3 0x40014200 idle0 1 110396 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 10165 6417K 7372K 78643K 16533 0 pcb 13 10K 11K 78643K 131 0 rtable 226 7K 10K 78643K 636 0 ifaddr 79 16K 18K 78643K 372 0 counters 27 17K 17K 78643K 40 0 ioctlops 0 0K 4K 78643K 2148 0 iov 0 0K 12K 78643K 310 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1366 85K 85K 78643K 2669 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 25 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 155 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 81K 78643K 2542 0 proc 61 59K 83K 78643K 620 0 subproc 104 6K 6K 78643K 156 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 15 0 in_multi 94 6K 6K 78643K 181 0 ether_multi 1 0K 0K 78643K 4 0 mrt 0 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 73 334K 334K 78643K 73 0 exec 0 0K 2K 78643K 828 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 225 175K 176K 78643K 14203 0 UVM aobj 46 6K 6K 78643K 56 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 33 0 NDP 11 0K 2K 78643K 51 0 temp 145 4768K 4844K 78643K 19250 0 kqueue 12 18K 26K 78643K 106 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 120 226 0 223 5 4 1 5 0 8 0 rtentry 112 169 0 65 4 0 4 4 0 8 0 unpcb 136 1142 0 1129 16 15 1 6 0 8 0 syncache 296 19 0 19 3 3 0 1 0 8 0 tcpqe 32 113 0 113 2 2 0 1 0 8 0 tcpcb 736 347 0 343 15 14 1 7 0 8 0 arp 88 27 0 10 1 0 1 1 0 8 0 ipq 40 3 0 3 1 1 0 1 0 8 0 ipqe 40 6 0 6 1 1 0 1 0 8 0 inpcb 312 1324 0 1314 27 25 2 12 0 8 0 nd6 48 40 0 18 1 0 1 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1152 3 0 3 1 1 0 1 0 8 0 pfosfp 40 2 0 1 1 0 1 1 0 8 0 pfosfpen 112 2 0 0 1 0 1 1 0 8 0 pfrktable 1344 10 0 10 2 2 0 1 0 8 0 pftag 88 5 0 1 1 0 1 1 0 8 0 pfrule 1360 232 0 232 4 4 0 2 0 8 0 rttmrq 48 6 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 707 0 270 32 4 28 29 0 8 0 art_table 32 708 0 270 4 0 4 4 0 8 0 art_node 16 168 0 73 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 150 0 140 1 0 1 1 0 8 0 shmpl 112 53 0 10 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4271 0 2839 90 0 90 90 0 8 0 ffsino 240 4271 0 2839 85 0 85 85 0 8 0 nchpl 144 7460 0 5832 63 0 63 63 0 8 0 uvmvnodes 80 5560 0 0 114 0 114 114 0 8 0 vnodes 224 5560 0 0 328 0 328 328 0 8 0 namei 1024 27089 0 27088 2 1 1 2 0 8 0 vcpupl 1984 9 0 2 1 0 1 1 0 8 0 vmpool 528 9 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 3 0 3 1 1 0 1 0 8 0 kstatmem 264 48 0 26 2 0 2 2 0 8 0 scxspl 216 21243 0 21243 12 11 1 8 0 8 1 plimitpl 152 196 0 182 1 0 1 1 0 8 0 sigapl 424 2839 0 2778 8 1 7 7 0 8 0 futexpl 64 19748 0 19746 1 0 1 1 0 8 0 knotepl 120 28280 0 28200 12 8 4 7 0 8 0 kqueuepl 184 357 0 349 6 5 1 4 0 8 0 pipepl 304 517 0 489 15 12 3 8 0 8 0 fdescpl 432 2806 0 2781 4 0 4 4 0 8 0 filepl 120 16625 0 16380 27 15 12 15 0 8 4 lockfpl 104 628 0 626 3 2 1 2 0 8 0 lockfspl 48 129 0 127 1 0 1 1 0 8 0 sessionpl 144 27 0 11 1 0 1 1 0 8 0 pgrppl 48 27 0 11 1 0 1 1 0 8 0 ucredpl 96 1157 0 1147 1 0 1 1 0 8 0 zombiepl 144 2781 0 2778 1 0 1 1 0 8 0 processpl 1000 2839 0 2778 8 0 8 8 0 8 0 procpl 672 6023 0 5951 9 2 7 8 0 8 0 sockpl 448 2692 0 2669 58 54 4 18 0 8 1 mcl64k 65536 41 0 41 3 2 1 1 0 8 1 mcl16k 16384 24 0 24 4 3 1 1 0 8 1 mcl12k 12288 34 0 34 5 4 1 1 0 8 1 mcl9k 9216 20 0 20 4 3 1 1 0 8 1 mcl8k 8192 96 0 96 3 2 1 1 0 8 1 mcl4k 4096 219 0 218 3 2 1 1 0 8 0 mcl2k2 2112 14 0 14 6 5 1 1 0 8 1 mcl2k 2048 73446 0 73381 20 10 10 13 0 8 0 mtagpl 96 1760 0 658 30 3 27 27 0 8 0 mbufpl 256 140702 0 139328 722 635 87 686 0 8 0 bufpl 288 6296 0 147 440 0 440 440 0 8 0 anonpl 24 478219 0 462313 130 24 106 130 0 188 0 amapchunkpl 152 39700 0 39139 29 3 26 27 0 158 0 amappl16 200 7194 0 6581 46 13 33 45 0 8 0 amappl15 192 4 0 3 1 0 1 1 0 8 0 amappl14 184 465 0 462 1 0 1 1 0 8 0 amappl13 176 105 0 103 1 0 1 1 0 8 0 amappl12 168 636 0 630 2 1 1 1 0 8 0 amappl11 160 389 0 371 1 0 1 1 0 8 0 amappl10 152 193 0 191 1 0 1 1 0 8 0 amappl9 144 858 0 852 1 0 1 1 0 8 0 amappl8 136 1113 0 1064 2 0 2 2 0 8 0 amappl7 128 587 0 577 1 0 1 1 0 8 0 amappl6 120 569 0 554 2 1 1 2 0 8 0 amappl5 112 2239 0 2229 1 0 1 1 0 8 0 amappl4 104 1492 0 1457 2 0 2 2 0 8 0 amappl3 96 7660 0 7621 2 0 2 2 0 8 0 amappl2 88 3263 0 3205 3 1 2 3 0 8 0 amappl1 80 66227 0 65655 22 7 15 19 0 8 1 amappl 88 13666 0 13528 5 1 4 4 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 55 0 10 1 0 1 1 0 8 0 uaddrrnd 24 2815 0 2783 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2815 0 2783 1 0 1 1 0 8 0 vmmpekpl 168 22225 0 22175 3 0 3 3 0 8 0 vmmpepl 168 268013 0 265678 149 25 124 131 0 357 12 vmsppl 272 2814 0 2783 5 2 3 3 0 8 0 rwobjpl 24 67681 0 60557 44 0 44 44 0 8 0 pdppl 4096 5636 0 5573 199 128 71 72 0 8 8 pvpl 32 1034108 0 1014104 254 80 174 254 0 265 0 pmappl 216 2814 0 2783 2 0 2 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1719 0 888 37 12 25 37 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace done_flush() at done_flush+0x38 vm_run(ffff80002e7cdbd0) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4463 vmmioctl(a00,c0205602,ffff80002e7cdbd0,2,ffff800029996540) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:656 VOP_IOCTL(fffffd806e8af128,c0205602,ffff80002e7cdbd0,2,fffffd807f7d7660,ffff800029996540) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806ce2bad8,c0205602,ffff80002e7cdbd0,ffff800029996540) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800029996540,ffff80002e7cdce8,ffff80002e7cdd40) at sys_ioctl+0x49e syscall(ffff80002e7cddb0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd081fbb1800, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace done_flush() at done_flush+0x38 vm_run(ffff80002e7cdbd0) at vm_run+0x302 sys/arch/amd64/amd64/vmm.c:4463 vmmioctl(a00,c0205602,ffff80002e7cdbd0,2,ffff800029996540) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:656 VOP_IOCTL(fffffd806e8af128,c0205602,ffff80002e7cdbd0,2,fffffd807f7d7660,ffff800029996540) at VOP_IOCTL+0x8d sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806ce2bad8,c0205602,ffff80002e7cdbd0,ffff800029996540) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800029996540,ffff80002e7cdce8,ffff80002e7cdd40) at sys_ioctl+0x49e syscall(ffff80002e7cddb0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd081fbb1800, count: -8