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(ffff80002a6bc818,deadbeefdeadbeef,0,c0000000,fffffd806fed90e0,fffffd807f7d7958) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a6bc818,deadbeefdeadbeef,0,c0000000,fffffd806fed90e0,fffffd807f7d7958) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd806fed90e0,4,40000000,0,ffff80002a6bc818) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd806fed90e0,4,40000000,0,ffff80002a6bc818) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a6bc818,ffff800037857470,ffff8000378574c0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff800037857530) at syscall+0x543 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfa1d9bee290, count: -5 ddb> show registers rdi 0xffff800035e16000 rsi 0xfcf rbp 0xffff800037857260 rbx 0xdeadbeefdeadbeef rdx 0xffff800035e16000 rcx 0xfce rax 0xffffffff819b4613 ktrops+0x43 r8 0xfffffd806fed90e0 r9 0xfffffd807f7d7958 r10 0x906259d62d8b1e4c r11 0x81188e5d6d289855 r12 0xdeadbeefdeadbeef r13 0xfffffd807f7d7958 r14 0xffff80002a6bc818 r15 0xc0000000 rip 0xffffffff819b461e ktrops+0x4e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000378571e0 ss 0x10 ktrops+0x4e: movq 0x8(%rbx),%r14 ddb> show proc PROC (syz-executor.4) tid=354334 pid=30819 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=83, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a6bd010,0xffffffff82c6c410 process=0xffff80002a6c5ba0 user=0xffff800037852000, vmspace=0xfffffd807f012000 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 30819 6763 44990 0 2 0 syz-executor.4 *30819 354334 44990 0 7 0x4000000 syz-executor.4 44134 399948 85162 0 2 0 syz-executor.1 44134 371232 85162 0 3 0x4000080 pipewr syz-executor.1 44134 269001 85162 0 3 0x4000080 fsleep syz-executor.1 44134 233705 85162 0 3 0x4000080 fsleep syz-executor.1 98855 164556 41105 0 2 0x2 syz-executor.6 85162 199351 41105 0 3 0x82 nanoslp syz-executor.1 22239 191461 41105 0 2 0x2 syz-executor.5 88878 344058 41105 0 2 0x2 syz-executor.3 14946 141748 41105 0 2 0x2 syz-executor.7 75069 89761 41105 0 3 0x82 nanoslp syz-executor.2 44990 97789 41105 0 3 0x82 nanoslp syz-executor.4 72027 128999 0 0 3 0x14280 nfsidl nfsio 47177 393237 0 0 3 0x14280 nfsidl nfsio 27116 408621 0 0 3 0x14280 nfsidl nfsio 71606 61577 0 0 3 0x14280 nfsidl nfsio 64918 223161 0 0 3 0x14280 nfsidl nfsio 52588 503953 0 0 3 0x14280 nfsidl nfsio 7929 69495 0 0 3 0x14280 nfsidl nfsio 6380 462581 0 0 3 0x14280 nfsidl nfsio 90051 293044 0 0 3 0x14280 nfsidl nfsio 31265 490811 0 0 3 0x14280 nfsidl nfsio 93146 353802 0 0 3 0x14280 nfsidl nfsio 1168 64261 0 0 3 0x14280 nfsidl nfsio 5446 176236 0 0 3 0x14280 nfsidl nfsio 15831 126150 0 0 3 0x14280 nfsidl nfsio 58333 513364 0 0 3 0x14280 nfsidl nfsio 37340 393317 0 0 3 0x14280 nfsidl nfsio 36105 32454 0 0 3 0x14280 nfsidl nfsio 29237 381002 0 0 3 0x14280 nfsidl nfsio 22905 289331 0 0 3 0x14280 nfsidl nfsio 91853 230140 0 0 3 0x14280 nfsidl nfsio 42332 331648 41105 0 2 0x2 syz-executor.0 19117 432029 0 0 3 0x14200 bored sosplice 41105 516599 60957 0 2 0x2000002 syz-fuzzer 41105 92316 60957 0 3 0x6000082 nanoslp syz-fuzzer 41105 444948 60957 0 3 0x6000082 thrsleep syz-fuzzer 41105 447767 60957 0 3 0x6000082 wait syz-fuzzer 41105 320628 60957 0 3 0x6000082 wait syz-fuzzer 41105 296222 60957 0 3 0x6000082 wait syz-fuzzer 41105 394635 60957 0 3 0x6000082 thrsleep syz-fuzzer 41105 360634 60957 0 3 0x6000082 thrsleep syz-fuzzer 41105 276808 60957 0 3 0x6000082 wait syz-fuzzer 41105 380867 60957 0 3 0x6000082 wait syz-fuzzer 41105 117089 60957 0 3 0x6000082 thrsleep syz-fuzzer 41105 64162 60957 0 3 0x6000082 wait syz-fuzzer 41105 508907 60957 0 3 0x6000082 wait syz-fuzzer 41105 44914 60957 0 3 0x6000082 wait syz-fuzzer 60957 161540 75642 0 3 0x10008a sigsusp ksh 75642 524144 54103 0 3 0x9a kqread sshd 45252 507237 1 0 3 0x100083 ttyopn getty 54103 99146 1 0 3 0x88 kqread sshd 21293 156792 44502 73 3 0x1100090 kqread syslogd 44502 327687 1 0 3 0x100082 netio syslogd 67261 297218 1 0 3 0x100080 kqread resolvd 96481 110233 78826 77 3 0x100092 kqread dhcpleased 52851 472263 78826 77 3 0x100092 kqread dhcpleased 78826 318852 1 0 3 0x80 kqread dhcpleased 39614 337234 0 0 3 0x14200 bored smr 53504 404748 0 0 2 0x14200 zerothread 32336 485000 0 0 3 0x14200 aiodoned aiodoned 41227 205218 0 0 3 0x14200 syncer update 94866 467492 0 0 3 0x14200 cleaner cleaner 76323 14501 0 0 3 0x14200 reaper reaper 81329 236844 0 0 3 0x14200 pgdaemon pagedaemon 35377 41166 0 0 3 0x14200 bored viomb 18129 26312 0 0 3 0x40014200 acpi0 acpi0 47166 486712 0 0 3 0x14200 bored softnet3 57843 179300 0 0 3 0x14200 bored softnet2 13193 256926 0 0 3 0x14200 bored softnet1 67858 286521 0 0 3 0x14200 bored softnet0 23291 125129 0 0 3 0x14200 bored systqmp 3372 394078 0 0 3 0x14200 bored systq 85661 334587 0 0 3 0x40014200 tmoslp softclock 79703 51316 0 0 3 0x40014200 idle0 1 480286 0 0 3 0x80082 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 10208 6442K 7651K 166960K 32045 0 pcb 13 12K 14K 166960K 411 0 rtable 211 14K 15K 166960K 923 0 pf 31 9K 9K 166960K 176 0 ifaddr 42 11K 12K 166960K 153 0 ifgroup 54 2K 2K 166960K 285 0 sysctl 2 1K 1K 166960K 6 0 counters 29 17K 17K 166960K 86 0 ioctlops 0 0K 2K 166960K 468 0 iov 0 0K 20K 166960K 3628 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1408 88K 88K 166960K 9212 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 33K 166960K 60 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 2622 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 12 41K 69K 166960K 19523 0 sigio 0 0K 0K 166960K 180 0 proc 58 59K 91K 166960K 1033 0 subproc 104 6K 6K 166960K 247 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 411 0 in_multi 84 6K 7K 166960K 447 0 ether_multi 1 0K 0K 166960K 37 0 mrt 1 0K 0K 166960K 25 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 1858 0 pfkey data 0 0K 0K 166960K 2 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 404 271K 280K 166960K 174266 0 UVM aobj 131 4K 5K 166960K 133 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 294 0 NDP 12 0K 2K 166960K 114 0 temp 74 5920K 6048K 166960K 127393 0 kqueue 12 18K 32K 166960K 912 0 SYN cache 2 1236K 1244K 166960K 3 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 158 0 155 1 0 1 1 0 8 0 rtentry 112 297 0 202 4 1 3 4 0 8 0 unpcb 144 34333 0 34311 97 91 6 13 0 8 5 syncache 312 144 0 144 16 16 0 1 0 8 0 tcpqe 32 377 0 377 16 16 0 2 0 8 0 tcpcb 808 2451 0 2425 45 38 7 12 0 8 1 arp 88 43 0 31 1 0 1 1 0 8 0 ipq 40 13 0 12 6 5 1 1 0 8 0 ipqe 40 40 0 39 6 5 1 1 0 8 0 inpcb 336 8374 0 8344 70 61 9 15 0 8 3 nd6 104 92 0 68 1 0 1 1 0 8 0 pkpcb 40 49 0 49 9 9 0 1 0 8 0 kcovpl 48 19 0 11 1 0 1 1 0 8 0 ppxss 1160 14 0 14 4 4 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1277 0 832 44 14 30 31 0 8 0 art_table 32 1278 0 832 5 1 4 4 0 8 0 art_node 16 294 0 206 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 14 1 1 0 1 0 8 0 semapl 112 2620 0 2610 1 0 1 1 0 8 0 shmpl 112 130 0 2 4 0 4 4 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 27349 0 25856 94 0 94 94 0 8 0 ffsino 240 27349 0 25856 89 0 89 89 0 8 0 nchpl 144 56640 0 56130 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 155605 0 155603 8 6 2 3 0 8 1 vcpupl 2048 24 0 1 3 0 3 3 0 8 0 vmpool 664 25 0 2 2 0 2 2 0 8 0 kstatmem 264 138 0 114 2 0 2 2 0 8 0 scxspl 216 191994 0 191994 23 22 1 8 1 8 1 plimitpl 152 485 0 470 1 0 1 1 0 8 0 sigapl 424 19829 0 19768 8 0 8 8 0 8 0 futexpl 64 143069 0 143067 2 1 1 1 0 8 0 knotepl 120 172430 0 172347 13 9 4 9 0 8 0 kqueuepl 184 2001 0 1993 5 4 1 4 0 8 0 pipepl 288 3131 0 3101 47 44 3 7 0 8 0 fdescpl 432 19783 0 19760 4 0 4 4 0 8 0 filepl 120 106216 0 105963 85 73 12 19 0 8 4 lockfpl 104 2911 0 2909 3 2 1 2 0 8 0 lockfspl 48 1243 0 1241 1 0 1 1 0 8 0 sessionpl 144 34 0 18 1 0 1 1 0 8 0 pgrppl 48 61 0 45 1 0 1 1 0 8 0 ucredpl 104 7102 0 7091 1 0 1 1 0 8 0 zombiepl 144 19769 0 19768 3 2 1 1 0 8 0 processpl 1008 19829 0 19768 10 1 9 9 0 8 0 procpl 680 45176 0 45098 18 10 8 9 0 8 0 sosppl 168 222 0 222 3 3 0 1 0 8 0 sockpl 456 42933 0 42877 699 680 19 48 0 8 8 mcl64k 65536 414 0 414 15 14 1 1 0 8 1 mcl16k 16384 138 0 138 16 15 1 1 0 8 1 mcl12k 12288 474 0 474 13 12 1 1 0 8 1 mcl9k 9216 295 0 295 21 20 1 1 0 8 1 mcl8k 8192 754 0 754 17 16 1 1 0 8 1 mcl4k 4096 1199 0 1199 13 12 1 2 0 8 1 mcl2k2 2112 81 0 81 18 17 1 1 0 8 1 mcl2k 2048 65625 0 65569 88 78 10 31 0 8 1 mtagpl 96 938 0 886 9 2 7 7 0 8 0 mbufpl 256 296026 0 295732 472 437 35 170 0 8 0 bufpl 288 67401 0 61001 458 0 458 458 0 8 0 anonpl 24 1828495 0 1819010 259 191 68 190 0 188 0 amapchunkpl 152 553818 0 553206 111 80 31 68 0 158 3 amappl16 200 40999 0 40729 179 163 16 84 0 8 0 amappl15 192 13 0 12 1 0 1 1 0 8 0 amappl14 184 214 0 202 2 1 1 2 0 8 0 amappl13 176 13 0 13 1 1 0 1 0 8 0 amappl12 168 20577 0 20548 2 0 2 2 0 8 0 amappl11 160 70 0 60 1 0 1 1 0 8 0 amappl10 152 38 0 29 2 1 1 1 0 8 0 amappl9 144 141 0 140 2 1 1 1 0 8 0 amappl8 136 738 0 577 7 1 6 6 0 8 0 amappl7 128 217 0 193 2 0 2 2 0 8 0 amappl6 120 513 0 498 1 0 1 1 0 8 0 amappl5 112 336 0 328 1 0 1 1 0 8 0 amappl4 104 598 0 567 2 1 1 2 0 8 0 amappl3 96 110228 0 110161 3 0 3 3 0 8 0 amappl2 88 20839 0 20765 3 1 2 3 0 8 0 amappl1 80 76220 0 75721 22 10 12 22 0 8 0 amappl 88 173442 0 173259 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 72 132 0 2 3 0 3 3 0 8 0 uaddrrnd 24 19808 0 19762 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 19808 0 19762 1 0 1 1 0 8 0 vmmpekpl 168 124504 0 124437 4 0 4 4 0 8 0 vmmpepl 168 1110178 0 1108198 220 119 101 151 0 357 0 vmsppl 368 19807 0 19762 5 0 5 5 0 8 0 rwobjpl 24 253534 0 246128 48 2 46 47 0 8 0 pdppl 4096 39622 0 39547 538 451 87 87 0 8 12 pvpl 32 5393143 0 5378332 504 371 133 361 0 265 0 pmappl 216 19807 0 19762 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2063 0 1214 28 2 26 28 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a6bc818,deadbeefdeadbeef,0,c0000000,fffffd806fed90e0,fffffd807f7d7958) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a6bc818,deadbeefdeadbeef,0,c0000000,fffffd806fed90e0,fffffd807f7d7958) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd806fed90e0,4,40000000,0,ffff80002a6bc818) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd806fed90e0,4,40000000,0,ffff80002a6bc818) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a6bc818,ffff800037857470,ffff8000378574c0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff800037857530) at syscall+0x543 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfa1d9bee290, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a6bc818,deadbeefdeadbeef,0,c0000000,fffffd806fed90e0,fffffd807f7d7958) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a6bc818,deadbeefdeadbeef,0,c0000000,fffffd806fed90e0,fffffd807f7d7958) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd806fed90e0,4,40000000,0,ffff80002a6bc818) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd806fed90e0,4,40000000,0,ffff80002a6bc818) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a6bc818,ffff800037857470,ffff8000378574c0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff800037857530) at syscall+0x543 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfa1d9bee290, count: -5