kernel: protection fault trap, code=0 Stopped at ktrops+0x4e: movq 0x8(%rbx),%r14 ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace ktrops(ffff8000216652c0,dead4110dead4110,0,80000110,fffffd806c48c880,fffffd807f7d7a28) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:700 [inline] ktrops(ffff8000216652c0,dead4110dead4110,0,80000110,fffffd806c48c880,fffffd807f7d7a28) at ktrops+0x4e sys/kern/kern_ktrace.c:543 doktrace(fffffd806c48c880,4,110,0,ffff8000216652c0) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:568 [inline] doktrace(fffffd806c48c880,4,110,0,ffff8000216652c0) at doktrace+0x524 sys/kern/kern_ktrace.c:490 sys_ktrace(ffff8000216652c0,ffff8000216f2ba0,ffff8000216f2bf0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:531 syscall(ffff8000216f2c70) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fdbc2b7f9b0, count: -5 ddb> show registers rdi 0xffff8000216652c0 rsi 0xdead4110dead4110 rbp 0xffff8000216f2990 rbx 0xdead4110dead4110 rdx 0 rcx 0x80000110 __kernel_virt_to_phys+0x110 rax 0x1 r8 0xfffffd806c48c880 r9 0xfffffd807f7d7a28 r10 0x5f1aa15784b2bb98 r11 0x4b19bb212028ae45 r12 0xdead4110dead4110 r13 0xfffffd807f7d7a28 r14 0xffff8000216652c0 r15 0x80000110 __kernel_virt_to_phys+0x110 rip 0xffffffff8142fc0e ktrops+0x4e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000216f2910 ss 0 ktrops+0x4e: movq 0x8(%rbx),%r14 ddb> show proc PROC (syz-executor1499578484) tid=13605 pid=77797 tcnt=1 stat=onproc flags process=0 proc=0 runpri=17, usrpri=53, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff800021666d50,0xffff800021665ac8 process=0xffff8000ffff77a0 user=0xffff8000216ed000, vmspace=0xfffffd8073cb6a20 estcpu=6, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 99659 183788 48922 0 2 0 syz-executor1499578484 64981 22429 863 0 2 0 syz-executor1499578484 *77797 13605 85408 0 7 0 syz-executor1499578484 40577 71464 62978 0 2 0x480 syz-executor1499578484 24567 329690 62978 0 2 0x480 syz-executor1499578484 48922 336187 62978 0 3 0x80 nanoslp syz-executor1499578484 863 167472 62978 0 3 0x80 nanoslp syz-executor1499578484 50165 248468 62978 0 2 0x480 syz-executor1499578484 49217 283564 62978 0 2 0 syz-executor1499578484 30563 324670 62978 0 3 0x80 nanoslp syz-executor1499578484 85408 307546 62978 0 2 0x480 syz-executor1499578484 62978 392398 57458 0 3 0x82 nanoslp syz-executor1499578484 57458 480783 66084 0 3 0x10008a sigsusp ksh 66084 406428 27790 0 3 0x9a kqread sshd 63719 74948 1 0 3 0x100083 ttyin getty 27790 195306 1 0 3 0x88 kqread sshd 4520 488313 58530 73 3 0x1100090 kqread syslogd 58530 29273 1 0 3 0x100082 netio syslogd 44796 455003 1 0 3 0x100080 kqread resolvd 25354 265669 84104 77 3 0x100092 kqread dhcpleased 7321 415188 84104 77 3 0x100092 kqread dhcpleased 84104 106160 1 0 3 0x80 kqread dhcpleased 7946 483929 0 0 3 0x14200 bored smr 3709 36310 0 0 3 0x14200 pgzero zerothread 87277 442149 0 0 3 0x14200 aiodoned aiodoned 3539 194949 0 0 3 0x14200 syncer update 52459 498150 0 0 3 0x14200 cleaner cleaner 99538 146669 0 0 3 0x14200 reaper reaper 63732 512865 0 0 3 0x14200 pgdaemon pagedaemon 77790 133059 0 0 3 0x14200 bored viomb 62339 265837 0 0 3 0x40014200 acpi0 acpi0 36154 198021 0 0 3 0x14200 bored softnet3 80070 111482 0 0 3 0x14200 bored softnet2 86852 144032 0 0 3 0x14200 bored softnet1 42886 136565 0 0 3 0x14200 bored softnet0 90222 112812 0 0 3 0x14200 bored systqmp 89147 5587 0 0 3 0x14200 bored systq 31555 265548 0 0 3 0x40014200 tmoslp softclock 97808 73709 0 0 3 0x40014200 idle0 1 232975 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 10139 6382K 6413K 78643K 11217 0 pcb 13 8K 8K 78643K 13 0 rtable 58 1K 2K 78643K 112 0 pf 12 6K 6K 78643K 12 0 ifaddr 11 5K 5K 78643K 11 0 ifgroup 17 1K 1K 78643K 17 0 counters 20 16K 16K 78643K 20 0 ioctlops 0 0K 2K 78643K 21 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1174 73K 74K 78643K 1187 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 1 0K 0K 78643K 1 0 proc 55 58K 59K 78643K 246 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 25 122K 122K 78643K 25 0 exec 0 0K 1K 78643K 253 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 104 5K 5K 78643K 2179 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 3 0K 0K 78643K 3 0 temp 1 5896K 5960K 78643K 2805 0 kqueue 11 16K 18K 78643K 24 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 21 0 18 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 144 33 0 20 1 0 1 1 0 8 0 syncache 304 5 0 5 2 1 1 1 0 8 1 tcpqe 32 56 0 56 1 1 0 1 0 8 0 tcpcb 808 8 0 5 1 0 1 1 0 8 0 arp 88 2 0 0 1 0 1 1 0 8 0 inpcb 336 26 0 20 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 96 0 0 6 0 6 6 0 8 0 art_table 32 97 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1450 0 40 89 0 89 89 0 8 0 ffsino 240 1450 0 40 83 0 83 83 0 8 0 nchpl 144 1652 0 57 60 0 60 60 0 8 0 uvmvnodes 80 1459 0 0 30 0 30 30 0 8 0 vnodes 216 1459 0 0 82 0 82 82 0 8 0 namei 1024 4356 0 4354 3 1 2 2 0 8 1 kstatmem 264 6 0 0 1 0 1 1 0 8 0 scxspl 216 5058 0 5058 10 9 1 8 1 8 1 plimitpl 152 16 0 10 1 0 1 1 0 8 0 sigapl 424 329 0 285 5 0 5 5 0 8 0 knotepl 120 3780 0 3751 3 1 2 2 0 8 1 kqueuepl 184 20 0 13 1 0 1 1 0 8 0 pipepl 288 88 0 85 2 1 1 1 0 8 0 fdescpl 432 313 0 289 3 0 3 3 0 8 0 filepl 120 1145 0 1088 2 0 2 2 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 17 0 9 1 0 1 1 0 8 0 pgrppl 48 17 0 9 1 0 1 1 0 8 0 ucredpl 104 66 0 56 1 0 1 1 0 8 0 zombiepl 144 289 0 285 2 1 1 1 0 8 0 processpl 1008 329 0 285 7 1 6 6 0 8 0 procpl 680 329 0 285 4 0 4 4 0 8 0 sockpl 456 80 0 58 3 0 3 3 0 8 0 mcl8k 8192 9 0 9 2 1 1 1 0 8 1 mcl4k 4096 5 0 5 2 1 1 1 0 8 1 mcl2k 2048 11776 0 11737 41 31 10 36 0 8 4 mtagpl 96 4 0 4 1 1 0 1 0 8 0 mbufpl 256 18949 0 18906 21 15 6 19 0 8 2 bufpl 288 2495 0 88 172 0 172 172 0 8 0 anonpl 24 196267 0 194367 26 13 13 24 0 188 1 amapchunkpl 152 8557 0 8394 8 1 7 7 0 158 0 amappl16 200 5966 0 5961 6 5 1 5 0 8 0 amappl15 192 16 0 16 1 1 0 1 0 8 0 amappl14 184 105 0 96 1 0 1 1 0 8 0 amappl13 176 20 0 20 1 1 0 1 0 8 0 amappl12 168 796 0 781 1 0 1 1 0 8 0 amappl11 160 48 0 38 1 0 1 1 0 8 0 amappl10 152 18 0 18 2 1 1 1 0 8 1 amappl9 144 174 0 174 1 1 0 1 0 8 0 amappl8 136 27 0 25 1 0 1 1 0 8 0 amappl7 128 16 0 15 1 0 1 1 0 8 0 amappl6 120 150 0 137 1 0 1 1 0 8 0 amappl5 112 109 0 101 1 0 1 1 0 8 0 amappl4 104 418 0 388 1 0 1 1 0 8 0 amappl3 96 2271 0 2231 2 0 2 2 0 8 1 amappl2 88 472 0 430 3 1 2 2 0 8 0 amappl1 80 9186 0 8723 15 4 11 11 0 8 0 amappl 88 1907 0 1842 2 0 2 2 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 313 0 289 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 313 0 289 1 0 1 1 0 8 0 vmmpekpl 168 6891 0 6870 1 0 1 1 0 8 0 vmmpepl 168 34952 0 33824 59 8 51 51 0 357 1 vmsppl 368 312 0 289 3 0 3 3 0 8 0 rwobjpl 24 19650 0 17545 14 1 13 14 0 8 0 pdppl 4096 632 0 578 80 22 58 58 0 8 4 pvpl 32 291381 0 286830 60 22 38 52 0 265 0 pmappl 216 312 0 289 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 517 0 74 13 0 13 13 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff8000216652c0,dead4110dead4110,0,80000110,fffffd806c48c880,fffffd807f7d7a28) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:700 [inline] ktrops(ffff8000216652c0,dead4110dead4110,0,80000110,fffffd806c48c880,fffffd807f7d7a28) at ktrops+0x4e sys/kern/kern_ktrace.c:543 doktrace(fffffd806c48c880,4,110,0,ffff8000216652c0) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:568 [inline] doktrace(fffffd806c48c880,4,110,0,ffff8000216652c0) at doktrace+0x524 sys/kern/kern_ktrace.c:490 sys_ktrace(ffff8000216652c0,ffff8000216f2ba0,ffff8000216f2bf0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:531 syscall(ffff8000216f2c70) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fdbc2b7f9b0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff8000216652c0,dead4110dead4110,0,80000110,fffffd806c48c880,fffffd807f7d7a28) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:700 [inline] ktrops(ffff8000216652c0,dead4110dead4110,0,80000110,fffffd806c48c880,fffffd807f7d7a28) at ktrops+0x4e sys/kern/kern_ktrace.c:543 doktrace(fffffd806c48c880,4,110,0,ffff8000216652c0) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:568 [inline] doktrace(fffffd806c48c880,4,110,0,ffff8000216652c0) at doktrace+0x524 sys/kern/kern_ktrace.c:490 sys_ktrace(ffff8000216652c0,ffff8000216f2ba0,ffff8000216f2bf0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:531 syscall(ffff8000216f2c70) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fdbc2b7f9b0, count: -5