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(ffff80002a690d58,dead4110dead4110,0,a0c7df9b,fffffd8068efb890,fffffd807f7d7958) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a690d58,dead4110dead4110,0,a0c7df9b,fffffd8068efb890,fffffd807f7d7958) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd8068efb890,4,20c7df9b,0,ffff80002a690d58) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8068efb890,4,20c7df9b,0,ffff80002a690d58) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a690d58,ffff800035da95e0,ffff800035da9530) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff800035da95e0) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2e5a3681170, count: -5 ddb> show registers rdi 0xffff80003297e000 rsi 0xd9e rbp 0xffff800035da9300 rbx 0xdead4110dead4110 rdx 0xffff80003297e000 rcx 0xd9d rax 0xffffffff822f9c43 ktrops+0x43 r8 0xfffffd8068efb890 r9 0xfffffd807f7d7958 r10 0x56660de80645d249 r11 0x7548804abc3a72e r12 0xdead4110dead4110 r13 0xfffffd807f7d7958 r14 0xffff80002a690d58 r15 0xa0c7df9b rip 0xffffffff822f9c4e ktrops+0x4e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800035da9280 ss 0x10 ktrops+0x4e: movq 0x8(%rbx),%r14 ddb> show proc PROC (syz-executor.5) tid=440122 pid=22328 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=79, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a691aa0,0xffff80002a690818 process=0xffff80002f53bac0 user=0xffff800035da4000, vmspace=0xfffffd8007462160 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 38247 453217 2699 0 2 0 syz-executor.6 38247 442409 2699 0 2 0x4000000 syz-executor.6 38247 8472 2699 0 3 0x4000080 fsleep syz-executor.6 22328 254021 13950 0 2 0 syz-executor.5 *22328 440122 13950 0 7 0x4000000 syz-executor.5 95832 429176 0 0 2 0x14280 nfsio 85187 63246 0 0 2 0x14280 nfsio 45650 231154 0 0 2 0x14280 nfsio 23681 33997 0 0 2 0x14280 nfsio 65605 351092 0 0 2 0x14280 nfsio 74415 298944 0 0 2 0x14280 nfsio 48752 107766 0 0 2 0x14280 nfsio 58572 482077 0 0 2 0x14280 nfsio 82375 255402 0 0 2 0x14280 nfsio 71775 199467 0 0 2 0x14280 nfsio 7894 485601 0 0 2 0x14280 nfsio 51183 383634 0 0 2 0x14280 nfsio 48713 354325 0 0 2 0x14280 nfsio 65060 46215 0 0 2 0x14280 nfsio 43469 187013 0 0 2 0x14280 nfsio 59159 388389 0 0 2 0x14280 nfsio 33406 66295 0 0 2 0x14280 nfsio 55697 53191 0 0 2 0x14280 nfsio 66621 188859 0 0 2 0x14280 nfsio 14379 149757 45631 0 3 0x80 nanoslp syz-executor.1 14379 46337 45631 0 3 0x4000080 kqpoll syz-executor.1 14379 406157 45631 0 3 0x4000080 fsleep syz-executor.1 30010 288026 67955 0 2 0x480 syz-executor.0 30010 80299 67955 0 3 0x4000080 ttyin syz-executor.0 30010 409283 67955 0 3 0x4000080 fsleep syz-executor.0 30010 466103 67955 0 3 0x4000080 fsleep syz-executor.0 7577 305593 25867 0 2 0x482 syz-executor.2 98344 164442 0 0 3 0x14200 bored sosplice 2699 323224 25867 0 3 0x82 nanoslp syz-executor.6 13950 18516 25867 0 2 0x482 syz-executor.5 95129 319147 25867 0 2 0x482 syz-executor.4 45631 65112 25867 0 2 0x482 syz-executor.1 34689 487523 25867 0 2 0x2 syz-executor.3 67955 10301 25867 0 2 0x482 syz-executor.0 25867 419471 67185 0 3 0x2000082 thrsleep syz-fuzzer 25867 50713 67185 0 2 0x6000482 syz-fuzzer 25867 187761 67185 0 3 0x6000082 wait syz-fuzzer 25867 355164 67185 0 3 0x6000082 kqread syz-fuzzer 25867 478467 67185 0 3 0x6000082 wait syz-fuzzer 25867 496000 67185 0 3 0x6000082 wait syz-fuzzer 25867 257425 67185 0 3 0x6000082 thrsleep syz-fuzzer 25867 250121 67185 0 3 0x6000082 wait syz-fuzzer 25867 469404 67185 0 3 0x6000082 wait syz-fuzzer 25867 223139 67185 0 3 0x6000082 wait syz-fuzzer 25867 216360 67185 0 3 0x6000082 thrsleep syz-fuzzer 25867 506018 67185 0 3 0x6000082 thrsleep syz-fuzzer 25867 232625 67185 0 3 0x6000082 wait syz-fuzzer 25867 131053 67185 0 3 0x6000082 thrsleep syz-fuzzer 67185 444341 15229 0 3 0x10008a sigsusp ksh 15229 501473 87397 0 3 0x9a kqread sshd 678 449621 1 0 3 0x100083 ttyin getty 87397 483422 1 0 3 0x88 kqread sshd 89165 179985 34493 73 3 0x1100090 kqread syslogd 34493 175776 1 0 3 0x100082 netio syslogd 57213 16560 1 0 3 0x100080 kqread resolvd 36791 159122 7969 77 3 0x100092 kqread dhcpleased 67294 423430 7969 77 3 0x100092 kqread dhcpleased 7969 490179 1 0 3 0x80 kqread dhcpleased 7379 464715 0 0 3 0x14200 bored smr 66474 146592 0 0 2 0x14200 zerothread 27098 216575 0 0 3 0x14200 aiodoned aiodoned 42 446246 0 0 3 0x14200 syncer update 78115 123489 0 0 3 0x14200 cleaner cleaner 10913 305598 0 0 3 0x14200 reaper reaper 63290 136971 0 0 3 0x14200 pgdaemon pagedaemon 23263 213911 0 0 3 0x14200 bored viomb 3839 175551 0 0 3 0x40014200 acpi0 acpi0 60812 475300 0 0 3 0x14200 bored softnet3 68739 482004 0 0 3 0x14200 bored softnet2 76609 423530 0 0 3 0x14200 bored softnet1 49094 252723 0 0 3 0x14200 bored softnet0 46785 361835 0 0 3 0x14200 bored systqmp 76038 323298 0 0 3 0x14200 bored systq 17155 162697 0 0 3 0x40014200 tmoslp softclock 12044 426511 0 0 3 0x40014200 idle0 1 516927 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 10160 6402K 6917K 166960K 12082 0 pcb 15 11K 11K 166960K 49 0 rtable 166 4K 6K 166960K 602 0 pf 23 8K 9K 166960K 55 0 ifaddr 31 9K 11K 166960K 61 0 ifgroup 38 1K 2K 166960K 86 0 sysctl 2 0K 0K 166960K 2 0 counters 27 17K 17K 166960K 41 0 ioctlops 0 0K 2K 166960K 39 0 iov 0 0K 16K 166960K 199 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1283 80K 80K 166960K 1480 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 96 0 dirhash 12 2K 3K 166960K 27 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 13 45K 69K 166960K 637 0 sigio 0 0K 0K 166960K 2 0 proc 57 59K 75K 166960K 509 0 subproc 91 5K 6K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 41 0 in_multi 66 4K 7K 166960K 115 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 426 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 297 75K 85K 166960K 7979 0 UVM aobj 120 15K 15K 166960K 120 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 15 0 NDP 8 0K 2K 166960K 40 0 temp 71 6700K 6820K 166960K 7962 0 kqueue 12 18K 30K 166960K 62 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 62 0 59 1 0 1 1 0 8 0 rtentry 112 196 0 120 4 1 3 4 0 8 0 unpcb 144 531 0 518 7 4 3 6 0 8 2 syncache 320 16 0 16 2 1 1 1 0 8 1 tcpqe 32 512 0 512 4 3 1 2 0 8 1 tcpcb 808 103 0 87 3 0 3 3 0 8 1 arp 88 23 0 11 1 0 1 1 0 8 0 inpcb 344 444 0 425 8 2 6 7 0 8 3 nd6 104 27 0 12 1 0 1 1 0 8 0 kcovpl 48 9 0 2 1 0 1 1 0 8 0 ppxss 1072 6 0 6 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 502 0 180 29 3 26 29 0 8 4 art_table 32 503 0 180 4 0 4 4 0 8 0 art_node 16 127 0 59 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 0 1 0 1 1 0 8 0 semapl 112 94 0 84 1 0 1 1 0 8 0 shmpl 112 117 0 0 4 0 4 4 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 2205 0 768 92 1 91 91 0 8 0 ffsino 240 2205 0 768 86 0 86 86 0 8 0 nchpl 144 3190 0 1551 63 0 63 63 0 8 0 uvmvnodes 80 2419 0 0 50 0 50 50 0 8 0 vnodes 216 2419 0 0 135 0 135 135 0 8 0 namei 1024 10816 0 10815 3 2 1 3 0 8 0 vcpupl 2048 3 0 0 1 0 1 1 0 8 0 vmpool 664 3 0 0 1 0 1 1 0 8 0 kstatmem 264 44 0 28 2 0 2 2 0 8 0 scxspl 216 10633 0 10633 11 9 2 8 1 8 2 plimitpl 152 69 0 55 1 0 1 1 0 8 0 sigapl 424 975 0 913 9 1 8 8 0 8 0 futexpl 64 5784 0 5780 1 0 1 1 0 8 0 knotepl 120 10381 0 10305 12 2 10 10 0 8 6 kqueuepl 184 154 0 144 4 0 4 4 0 8 3 pipepl 288 185 0 160 3 0 3 3 0 8 1 fdescpl 432 918 0 894 5 1 4 4 0 8 0 filepl 120 4467 0 4247 13 1 12 12 0 8 4 lockfpl 104 129 0 126 1 0 1 1 0 8 0 lockfspl 48 56 0 53 1 0 1 1 0 8 0 sessionpl 144 24 0 9 1 0 1 1 0 8 0 pgrppl 48 24 0 9 1 0 1 1 0 8 0 ucredpl 104 665 0 654 1 0 1 1 0 8 0 zombiepl 144 915 0 913 1 0 1 1 0 8 0 processpl 1072 975 0 913 5 0 5 5 0 8 0 procpl 680 1787 0 1704 9 1 8 8 0 8 0 sosppl 168 9 0 6 1 0 1 1 0 8 0 sockpl 488 1040 0 1005 25 12 13 21 0 8 6 mcl64k 65536 33 0 33 1 0 1 1 0 8 1 mcl16k 16384 24 0 24 1 0 1 1 0 8 1 mcl12k 12288 37 0 37 1 0 1 1 0 8 1 mcl9k 9216 15 0 15 1 0 1 1 0 8 1 mcl8k 8192 41 0 41 2 1 1 1 0 8 1 mcl4k 4096 71 0 71 2 1 1 1 0 8 1 mcl2k2 2112 5 0 5 1 0 1 1 0 8 1 mcl2k 2048 68071 0 68010 56 46 10 34 0 8 1 mtagpl 96 98 0 26 3 1 2 2 0 8 0 mbufpl 256 113176 0 112934 38 14 24 24 0 8 6 bufpl 280 5026 0 139 350 0 350 350 0 8 0 anonpl 24 283919 0 272983 106 0 106 106 0 188 22 amapchunkpl 152 26829 0 26069 39 2 37 38 0 158 5 amappl16 200 8356 0 7960 42 13 29 35 0 8 8 amappl15 192 16 0 16 1 1 0 1 0 8 0 amappl14 184 152 0 140 2 1 1 2 0 8 0 amappl13 176 34 0 33 1 0 1 1 0 8 0 amappl12 168 1576 0 1551 3 1 2 2 0 8 0 amappl11 160 61 0 51 1 0 1 1 0 8 0 amappl10 152 31 0 22 1 0 1 1 0 8 0 amappl9 144 207 0 205 1 0 1 1 0 8 0 amappl8 136 165 0 119 2 0 2 2 0 8 0 amappl7 128 174 0 157 2 1 1 2 0 8 0 amappl6 120 263 0 255 1 0 1 1 0 8 0 amappl5 112 126 0 117 1 0 1 1 0 8 0 amappl4 104 422 0 402 2 1 1 2 0 8 0 amappl3 96 5387 0 5311 4 1 3 3 0 8 0 amappl2 88 1382 0 1316 3 1 2 3 0 8 0 amappl1 80 11479 0 10982 22 10 12 22 0 8 0 amappl 88 7459 0 7260 7 1 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 72 119 0 0 3 0 3 3 0 8 0 uaddrrnd 24 921 0 894 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 921 0 894 1 0 1 1 0 8 0 vmmpekpl 168 12472 0 12414 3 0 3 3 0 8 0 vmmpepl 168 78978 0 76956 124 3 121 121 0 357 25 vmsppl 352 920 0 894 4 1 3 3 0 8 0 rwobjpl 24 30413 0 26527 26 1 25 25 0 8 0 pdppl 4096 1848 0 1791 111 44 67 67 0 8 10 pvpl 32 576927 0 560688 334 15 319 334 0 265 164 pmappl 216 920 0 894 3 1 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 444 0 115 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a690d58,dead4110dead4110,0,a0c7df9b,fffffd8068efb890,fffffd807f7d7958) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a690d58,dead4110dead4110,0,a0c7df9b,fffffd8068efb890,fffffd807f7d7958) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd8068efb890,4,20c7df9b,0,ffff80002a690d58) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8068efb890,4,20c7df9b,0,ffff80002a690d58) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a690d58,ffff800035da95e0,ffff800035da9530) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff800035da95e0) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2e5a3681170, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a690d58,dead4110dead4110,0,a0c7df9b,fffffd8068efb890,fffffd807f7d7958) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a690d58,dead4110dead4110,0,a0c7df9b,fffffd8068efb890,fffffd807f7d7958) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd8068efb890,4,20c7df9b,0,ffff80002a690d58) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8068efb890,4,20c7df9b,0,ffff80002a690d58) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a690d58,ffff800035da95e0,ffff800035da9530) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff800035da95e0) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2e5a3681170, count: -5