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(ffff800035e030a0) at vm_run+0x163 vmmioctl(a00,c0205602,ffff800035e030a0,1,ffff80002a728570) at vmmioctl+0x299 sys/dev/vmm/vmm.c:242 VOP_IOCTL(fffffd807127d000,c0205602,ffff800035e030a0,1,fffffd807f7d7750,ffff80002a728570) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806bc3e100,c0205602,ffff800035e030a0,ffff80002a728570) at vn_ioctl+0xbb sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002a728570,ffff800035e031b0,ffff800035e03200) at sys_ioctl+0x49e syscall(ffff800035e03270) at syscall+0x543 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9f004b460b0, count: -8 ddb> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800035e06e30 rbp 0xffff800035e02df0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xfffffffffffffffc r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0xac146dd23a4fd00b r11 0xd61d6aab56c169e r12 0xffff800035e06ba8 r13 0xffff800035e02d26 r14 0xffff800035e06800 r15 0x246 rip 0xffffffff811796eb done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff800035e02c56 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor.1) tid=361935 pid=93866 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a728020,0xffffffff82ce6520 process=0xffff80002a694400 user=0xffff800035dfe000, vmspace=0xfffffd807f0115c0 estcpu=33, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 93866 130792 45632 0 2 0 syz-executor.1 *93866 361935 45632 0 7 0x4000000 syz-executor.1 33528 320147 87524 0 3 0x80 nanoslp syz-executor.7 33528 468921 87524 0 3 0x4000080 lockf syz-executor.7 33528 330070 87524 0 3 0x4000080 fsleep syz-executor.7 33528 201369 87524 0 3 0x4000080 fsleep syz-executor.7 60423 337283 59962 0 3 0x82 nanoslp syz-executor.5 13601 451138 59962 0 3 0x82 nanoslp syz-executor.4 25248 272166 0 0 3 0x14200 bored sosplice 32257 146255 59962 0 3 0x82 piperd syz-executor.6 87524 128278 59962 0 3 0x82 nanoslp syz-executor.7 31897 264120 59962 0 3 0x82 piperd syz-executor.3 45632 410699 59962 0 3 0x82 nanoslp syz-executor.1 24677 435036 59962 0 3 0x82 piperd syz-executor.0 59962 498022 64708 0 3 0x2000082 wait syz-fuzzer 59962 228049 64708 0 3 0x6000082 nanoslp syz-fuzzer 59962 192172 64708 0 3 0x6000082 thrsleep syz-fuzzer 59962 435374 64708 0 3 0x6000082 wait syz-fuzzer 59962 308410 64708 0 3 0x6000082 wait syz-fuzzer 59962 170355 64708 0 3 0x6000082 thrsleep syz-fuzzer 59962 2283 64708 0 3 0x6000082 thrsleep syz-fuzzer 59962 310169 64708 0 3 0x6000082 wait syz-fuzzer 59962 158055 64708 0 2 0x6000002 syz-fuzzer 59962 440954 64708 0 3 0x6000082 thrsleep syz-fuzzer 59962 40786 64708 0 3 0x6000082 wait syz-fuzzer 59962 320934 64708 0 3 0x6000082 wait syz-fuzzer 59962 447462 64708 0 3 0x6000082 wait syz-fuzzer 59962 142100 64708 0 3 0x6000082 thrsleep syz-fuzzer 64708 519861 32109 0 3 0x10008a sigsusp ksh 32109 487292 80583 0 3 0x9a kqread sshd 23995 69522 1 0 3 0x100083 ttyopn getty 80583 321711 1 0 3 0x88 kqread sshd 35540 304472 13002 73 3 0x1100090 kqread syslogd 13002 211161 1 0 3 0x100082 netio syslogd 176 263353 1 0 3 0x100080 kqread resolvd 63976 98640 74888 77 3 0x100092 kqread dhcpleased 91766 298416 74888 77 3 0x100092 kqread dhcpleased 74888 502207 1 0 3 0x80 kqread dhcpleased 3118 84807 0 0 3 0x14200 bored smr 12286 433145 0 0 2 0x14200 zerothread 87085 437149 0 0 3 0x14200 aiodoned aiodoned 56146 380621 0 0 3 0x14200 syncer update 98312 22974 0 0 3 0x14200 cleaner cleaner 2942 482066 0 0 3 0x14200 reaper reaper 1376 402056 0 0 3 0x14200 pgdaemon pagedaemon 68414 399553 0 0 3 0x14200 bored viomb 71168 469999 0 0 3 0x40014200 acpi0 acpi0 58607 85807 0 0 3 0x14200 bored softnet3 67178 172334 0 0 3 0x14200 bored softnet2 33305 88368 0 0 3 0x14200 bored softnet1 23612 306667 0 0 3 0x14200 bored softnet0 544 102307 0 0 3 0x14200 bored systqmp 81779 393478 0 0 3 0x14200 bored systq 94398 14562 0 0 3 0x40014200 tmoslp softclock 32266 397448 0 0 3 0x40014200 idle0 1 147661 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 10196 6465K 7257K 166960K 15569 0 pcb 13 12K 14K 166960K 258 0 rtable 177 5K 7K 166960K 532 0 pf 23 8K 9K 166960K 74 0 ifaddr 31 9K 11K 166960K 74 0 ifgroup 38 1K 2K 166960K 119 0 sysctl 2 0K 0K 166960K 2 0 counters 26 17K 17K 166960K 47 0 ioctlops 0 0K 2K 166960K 86 0 iov 0 0K 24K 166960K 214 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1471 92K 92K 166960K 3052 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 35 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 212 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 11 37K 69K 166960K 1906 0 sigio 0 0K 0K 166960K 161 0 proc 57 59K 75K 166960K 595 0 subproc 91 5K 6K 166960K 143 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 230 0 in_multi 66 4K 7K 166960K 148 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 613 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 290 111K 129K 166960K 19713 0 UVM aobj 131 4K 4K 166960K 134 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 70 0 NDP 8 0K 1K 166960K 51 0 temp 70 5919K 5989K 166960K 44385 0 kqueue 12 18K 28K 166960K 137 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 106 0 103 1 0 1 1 0 8 0 rtentry 112 155 0 75 4 0 4 4 0 8 0 unpcb 144 2973 0 2960 26 25 1 8 0 8 0 syncache 312 19 0 19 5 4 1 1 0 8 1 sackhl 24 2 0 2 2 2 0 1 0 8 0 tcpqe 32 180 0 180 4 3 1 1 0 8 1 tcpcb 808 352 0 342 15 13 2 8 0 8 0 arp 88 24 0 12 1 0 1 1 0 8 0 ipq 40 3 0 3 2 2 0 1 0 8 0 ipqe 40 10 0 10 2 2 0 1 0 8 0 inpcb 336 1495 0 1482 28 26 2 9 0 8 0 nd6 104 39 0 21 1 0 1 1 0 8 0 pkpcb 40 8 0 8 2 2 0 1 0 8 0 kcovpl 48 11 0 4 1 0 1 1 0 8 0 ppxss 1160 6 0 6 2 2 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 607 0 278 30 7 23 29 0 8 0 art_table 32 608 0 278 4 0 4 4 0 8 0 art_node 16 149 0 76 1 0 1 1 0 8 0 sysvmsgpl 40 88 0 73 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 207 0 197 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 4052 0 2602 92 0 92 92 0 8 0 ffsino 240 4052 0 2602 86 0 86 86 0 8 0 nchpl 144 6868 0 5233 63 0 63 63 0 8 0 uvmvnodes 80 5468 0 0 112 0 112 112 0 8 0 vnodes 216 5468 0 0 304 0 304 304 0 8 0 namei 1024 24801 0 24801 6 5 1 3 0 8 1 vcpupl 2048 11 0 0 2 0 2 2 0 8 0 vmpool 664 16 0 5 1 0 1 1 0 8 0 kstatmem 264 58 0 42 2 0 2 2 0 8 0 scxspl 216 25942 0 25942 15 14 1 8 1 8 1 plimitpl 152 263 0 249 1 0 1 1 0 8 0 sigapl 424 2202 0 2161 6 0 6 6 0 8 0 futexpl 64 19762 0 19760 2 1 1 1 0 8 0 knotepl 120 19200 0 19126 9 6 3 9 0 8 0 kqueuepl 184 205 0 197 1 0 1 1 0 8 0 pipepl 288 600 0 575 18 13 5 7 0 8 3 fdescpl 432 2182 0 2160 4 0 4 4 0 8 0 filepl 120 16061 0 15843 36 24 12 15 0 8 4 lockfpl 104 648 0 643 2 1 1 2 0 8 0 lockfspl 48 257 0 254 1 0 1 1 0 8 0 sessionpl 144 26 0 11 1 0 1 1 0 8 0 pgrppl 48 44 0 29 1 0 1 1 0 8 0 ucredpl 104 2310 0 2298 1 0 1 1 0 8 0 zombiepl 144 2163 0 2161 1 0 1 1 0 8 0 processpl 1008 2202 0 2161 7 1 6 6 0 8 0 procpl 680 5011 0 4953 12 5 7 7 0 8 1 sosppl 168 31 0 28 4 3 1 1 0 8 0 sockpl 456 4582 0 4553 106 100 6 29 0 8 1 mcl64k 65536 69 0 69 9 8 1 1 0 8 1 mcl16k 16384 33 0 33 7 6 1 1 0 8 1 mcl12k 12288 73 0 73 8 7 1 1 0 8 1 mcl9k 9216 36 0 36 6 5 1 1 0 8 1 mcl8k 8192 134 0 134 10 9 1 1 0 8 1 mcl4k 4096 208 0 208 8 7 1 1 0 8 1 mcl2k2 2112 15 0 15 5 4 1 1 0 8 1 mcl2k 2048 70941 0 70898 41 34 7 30 0 8 0 mtagpl 96 287 0 182 7 2 5 6 0 8 0 mbufpl 256 124980 0 124794 31 14 17 21 0 8 0 bufpl 288 8677 0 2277 458 0 458 458 0 8 0 anonpl 24 380838 0 369343 132 32 100 114 0 188 8 amapchunkpl 152 65396 0 64657 55 18 37 46 0 158 2 amappl16 200 8980 0 8539 47 23 24 37 0 8 0 amappl15 192 10 0 9 1 0 1 1 0 8 0 amappl14 184 164 0 153 2 1 1 2 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 2847 0 2823 2 0 2 2 0 8 0 amappl11 160 56 0 46 1 0 1 1 0 8 0 amappl10 152 28 0 20 1 0 1 1 0 8 0 amappl9 144 131 0 130 2 1 1 1 0 8 0 amappl8 136 213 0 161 2 0 2 2 0 8 0 amappl7 128 174 0 154 2 0 2 2 0 8 0 amappl6 120 307 0 298 1 0 1 1 0 8 0 amappl5 112 145 0 137 1 0 1 1 0 8 0 amappl4 104 450 0 425 2 1 1 2 0 8 0 amappl3 96 12850 0 12783 3 0 3 3 0 8 0 amappl2 88 2685 0 2620 3 1 2 3 0 8 0 amappl1 80 16207 0 15716 22 11 11 22 0 8 0 amappl 88 19146 0 18960 6 0 6 6 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 2198 0 2165 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2198 0 2165 1 0 1 1 0 8 0 vmmpekpl 168 21088 0 21039 3 0 3 3 0 8 0 vmmpepl 168 148594 0 146613 169 67 102 125 0 357 1 vmsppl 368 2197 0 2165 4 0 4 4 0 8 0 rwobjpl 24 47936 0 40946 43 0 43 43 0 8 0 pdppl 4096 4402 0 4341 184 110 74 74 0 8 13 pvpl 32 889193 0 873043 410 219 191 336 0 265 30 pmappl 216 2197 0 2165 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1053 0 263 24 0 24 24 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace done_flush() at done_flush+0x38 vm_run(ffff800035e030a0) at vm_run+0x163 vmmioctl(a00,c0205602,ffff800035e030a0,1,ffff80002a728570) at vmmioctl+0x299 sys/dev/vmm/vmm.c:242 VOP_IOCTL(fffffd807127d000,c0205602,ffff800035e030a0,1,fffffd807f7d7750,ffff80002a728570) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806bc3e100,c0205602,ffff800035e030a0,ffff80002a728570) at vn_ioctl+0xbb sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002a728570,ffff800035e031b0,ffff800035e03200) at sys_ioctl+0x49e syscall(ffff800035e03270) at syscall+0x543 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9f004b460b0, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace done_flush() at done_flush+0x38 vm_run(ffff800035e030a0) at vm_run+0x163 vmmioctl(a00,c0205602,ffff800035e030a0,1,ffff80002a728570) at vmmioctl+0x299 sys/dev/vmm/vmm.c:242 VOP_IOCTL(fffffd807127d000,c0205602,ffff800035e030a0,1,fffffd807f7d7750,ffff80002a728570) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806bc3e100,c0205602,ffff800035e030a0,ffff80002a728570) at vn_ioctl+0xbb sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002a728570,ffff800035e031b0,ffff800035e03200) at sys_ioctl+0x49e syscall(ffff800035e03270) at syscall+0x543 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9f004b460b0, count: -8