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(ffff80002a6142a8,deadbeefdeadbeef,0,c0001c30,fffffd80651871c8,fffffd807f7d77b8) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a6142a8,deadbeefdeadbeef,0,c0001c30,fffffd80651871c8,fffffd807f7d77b8) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd80651871c8,4,40001c30,0,ffff80002a6142a8) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd80651871c8,4,40001c30,0,ffff80002a6142a8) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a6142a8,ffff800035cc33e0,ffff800035cc3420) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff800035cc34e0) at syscall+0x5ef sys/arch/amd64/amd64/trap.c:591 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x636800a5f30, count: -5 ddb> show registers rdi 0xffff800038e34000 rsi 0xd2c rbp 0xffff800035cc31d0 rbx 0xdeadbeefdeadbeef rdx 0xffff800038e34000 rcx 0xd2b rax 0xffffffff819e3053 ktrops+0x43 r8 0xfffffd80651871c8 r9 0xfffffd807f7d77b8 r10 0x2ac06d7d16606204 r11 0xebada0015aa4e67b r12 0xdeadbeefdeadbeef r13 0xfffffd807f7d77b8 r14 0xffff80002a6142a8 r15 0xc0001c30 rip 0xffffffff819e305e ktrops+0x4e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800035cc3150 ss 0x10 ktrops+0x4e: movq 0x8(%rbx),%r14 ddb> show proc PROC (syz-executor.0) tid=307260 pid=75395 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=82, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a615a90,0xffff80002a6f2ad0 process=0xffff800033999d68 user=0xffff800035cbe000, vmspace=0xfffffd8076642dd8 estcpu=32, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 87520 418585 64715 0 2 0 syz-executor.4 87520 307626 64715 0 2 0x4000000 syz-executor.4 87520 497968 64715 0 2 0x4000000 syz-executor.4 87520 392921 64715 0 2 0x4000000 syz-executor.4 78727 212234 71708 0 2 0 syz-executor.5 78727 343256 71708 0 3 0x4000080 ttyout syz-executor.5 56749 11221 30721 0 2 0 syz-executor.6 56749 319674 30721 0 3 0x4000080 fsleep syz-executor.6 75395 495028 41313 0 2 0 syz-executor.0 *75395 307260 41313 0 7 0x4000000 syz-executor.0 75395 369436 41313 0 3 0x4000080 fsleep syz-executor.0 32511 383632 59 0 2 0 syz-executor.7 32511 36175 59 0 3 0x4000080 fsleep syz-executor.7 23146 102392 63045 0 2 0 syz-executor.1 23146 367002 63045 0 3 0x4000080 fsleep syz-executor.1 69863 427888 0 0 2 0x14280 nfsio 67497 182156 0 0 2 0x14280 nfsio 91860 100499 0 0 2 0x14280 nfsio 1580 154088 0 0 2 0x14280 nfsio 55479 57847 0 0 2 0x14280 nfsio 36889 275498 0 0 2 0x14280 nfsio 31231 423588 0 0 2 0x14280 nfsio 91528 475322 0 0 2 0x14280 nfsio 41425 289729 0 0 2 0x14280 nfsio 85925 261001 0 0 2 0x14280 nfsio 62607 458783 0 0 2 0x14280 nfsio 65393 379511 0 0 2 0x14280 nfsio 50626 333674 0 0 2 0x14280 nfsio 67697 146616 0 0 2 0x14280 nfsio 6033 251517 0 0 2 0x14280 nfsio 92979 296226 0 0 2 0x14280 nfsio 5279 398985 0 0 2 0x14280 nfsio 54330 139651 0 0 2 0x14280 nfsio 70388 505266 87221 0 3 0x82 nanoslp syz-executor.3 60906 513387 87221 0 3 0x82 nanoslp syz-executor.2 71708 112711 87221 0 3 0x82 nanoslp syz-executor.5 30721 507542 87221 0 3 0x82 nanoslp syz-executor.6 63045 146027 87221 0 3 0x82 nanoslp syz-executor.1 41313 13104 87221 0 3 0x82 nanoslp syz-executor.0 64715 96486 87221 0 3 0x82 nanoslp syz-executor.4 59 328468 87221 0 3 0x82 nanoslp syz-executor.7 3006 293047 1 0 3 0x80 fsleep syz-executor.2 3006 326280 1 0 3 0x4000080 netcon syz-executor.2 29268 279152 0 0 3 0x14200 acct acct 53423 512599 1 0 3 0x100083 ttyin getty 92155 60649 1 0 3 0x80 fsleep syz-executor.4 92155 43789 1 0 3 0x4000080 netio syz-executor.4 94183 16500 1 0 3 0x80 fsleep syz-executor.2 94183 42095 1 0 3 0x4000080 ttyin syz-executor.2 39992 374662 0 0 3 0x14200 bored sosplice 87221 493226 73389 0 3 0x2000082 wait syz-fuzzer 87221 321800 73389 0 3 0x6000082 thrsleep syz-fuzzer 87221 67227 73389 0 3 0x6000082 wait syz-fuzzer 87221 96950 73389 0 3 0x6000082 wait syz-fuzzer 87221 369558 73389 0 3 0x6000082 wait syz-fuzzer 87221 398873 73389 0 3 0x6000082 wait syz-fuzzer 87221 91472 73389 0 3 0x6000082 thrsleep syz-fuzzer 87221 138194 73389 0 3 0x6000082 thrsleep syz-fuzzer 87221 403780 73389 0 3 0x6000082 thrsleep syz-fuzzer 87221 420345 73389 0 3 0x6000082 wait syz-fuzzer 87221 215466 73389 0 3 0x6000082 thrsleep syz-fuzzer 87221 199071 73389 0 3 0x6000082 kqread syz-fuzzer 87221 25554 73389 0 3 0x6000082 wait syz-fuzzer 87221 509799 73389 0 3 0x6000082 wait syz-fuzzer 73389 336870 80701 0 3 0x10008a sigsusp ksh 80701 437100 61743 0 3 0x9a kqread sshd 61743 56229 1 0 3 0x88 kqread sshd 87837 520315 30700 73 2 0x1100090 syslogd 30700 214001 1 0 3 0x100082 netio syslogd 22962 421111 1 0 3 0x100080 kqread resolvd 84311 488839 69046 77 3 0x100092 kqread dhcpleased 55319 501999 69046 77 3 0x100092 kqread dhcpleased 69046 368329 1 0 3 0x80 kqread dhcpleased 67708 385240 0 0 3 0x14200 bored smr 84996 239515 0 0 2 0x14200 zerothread 73701 8707 0 0 3 0x14200 aiodoned aiodoned 39685 143939 0 0 3 0x14200 syncer update 90359 487507 0 0 3 0x14200 cleaner cleaner 84052 140225 0 0 3 0x14200 reaper reaper 97111 216832 0 0 3 0x14200 pgdaemon pagedaemon 11929 232752 0 0 3 0x14200 bored viomb 3753 149147 0 0 3 0x40014200 acpi0 acpi0 61558 378096 0 0 3 0x14200 bored softnet3 54085 94553 0 0 3 0x14200 bored softnet2 70796 58931 0 0 3 0x14200 bored softnet1 95406 303894 0 0 3 0x14200 bored softnet0 59060 100903 0 0 3 0x14200 bored systqmp 11387 53986 0 0 3 0x14200 bored systq 23354 439935 0 0 3 0x40014200 tmoslp softclock 20193 345970 0 0 3 0x40014200 idle0 1 68286 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 10226 6494K 7674K 166960K 49587 0 pcb 15 50K 66K 166960K 1484 0 rtable 155 14K 18K 166960K 4172 0 pf 32 9K 11K 166960K 537 0 ifaddr 31 12K 14K 166960K 592 0 ifgroup 55 2K 3K 166960K 856 0 sysctl 4 1K 1K 166960K 10 0 counters 31 17K 18K 166960K 275 0 ioctlops 0 0K 2K 166960K 1051 0 iov 0 0K 24K 166960K 1643 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1573 98K 99K 166960K 19409 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 203 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 2662 0 dirhash 12 2K 2K 166960K 90 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 19 69K 89K 166960K 21930 0 sigio 0 0K 0K 166960K 408 0 proc 58 59K 83K 166960K 3655 0 subproc 143 8K 9K 166960K 1320 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1724 0 in_multi 56 4K 7K 166960K 1338 0 ether_multi 1 0K 0K 166960K 20 0 mrt 1 0K 0K 166960K 13 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 4048 0 pfkey data 0 0K 0K 166960K 8 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 578 875K 876K 166960K 208722 0 UVM aobj 131 4K 4K 166960K 143 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 445 0 NDP 12 0K 2K 166960K 474 0 temp 86 6704K 6832K 166960K 118630 0 kqueue 12 18K 26K 166960K 1292 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 1240 0 1237 18 17 1 3 0 8 0 rtentry 112 1324 0 1261 7 4 3 4 0 8 0 unpcb 144 15481 0 15466 212 210 2 6 0 8 1 syncache 312 906 0 906 39 38 1 1 0 8 1 tcpqe 32 455 0 455 35 35 0 1 0 8 0 tcpcb 808 12689 0 12275 249 174 75 83 0 8 0 arp 88 239 0 231 1 0 1 1 0 8 0 ipq 40 20 0 20 9 9 0 1 0 8 0 ipqe 40 57 0 57 9 9 0 1 0 8 0 inpcb 336 26416 0 25998 305 241 64 70 0 8 0 nd6 104 327 0 316 1 0 1 1 0 8 0 pkpcb 40 38 0 38 10 10 0 1 0 8 0 kcovpl 48 101 0 90 1 0 1 1 0 8 0 ppxss 1160 96 0 96 31 31 0 1 0 8 0 art_heap8 4096 9 0 8 6 5 1 3 0 8 0 art_heap4 256 5411 0 5089 95 71 24 34 0 8 0 art_table 32 5420 0 5097 7 3 4 5 0 8 0 art_node 16 1318 0 1260 1 0 1 1 0 8 0 sysvmsgpl 40 29 0 20 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 2655 0 2645 1 0 1 1 0 8 0 shmpl 112 140 0 12 4 0 4 4 0 8 0 dirhash 1024 69 0 52 3 0 3 3 0 8 0 dino2pl 256 36344 0 34832 95 0 95 95 0 8 0 ffsino 240 36344 0 34832 90 0 90 90 0 8 0 nchpl 144 65032 0 63384 63 0 63 63 0 8 0 uvmvnodes 80 30954 0 0 632 0 632 632 0 8 0 vnodes 216 30954 0 0 1720 0 1720 1720 0 8 0 namei 1024 223989 0 223989 22 21 1 3 0 8 1 vcpupl 2048 247 0 2 31 0 31 31 0 8 0 vmpool 664 256 0 11 21 0 21 21 0 8 0 kstatmem 264 512 0 488 19 16 3 3 0 8 0 scxspl 216 198789 0 198789 47 46 1 8 1 8 1 plimitpl 152 2262 0 2243 1 0 1 1 0 8 0 sigapl 424 26767 0 26699 14 6 8 9 0 8 0 futexpl 64 207532 0 207525 1 0 1 1 0 8 0 knotepl 120 181679 0 181596 48 44 4 16 0 8 0 kqueuepl 184 2736 0 2728 34 33 1 4 0 8 0 pipepl 288 4681 0 4650 129 126 3 11 0 8 0 fdescpl 432 22008 0 21978 4 0 4 4 0 8 0 filepl 120 149715 0 149418 222 210 12 19 0 8 0 lockfpl 104 14315 0 14313 23 22 1 4 0 8 0 lockfspl 48 4401 0 4399 1 0 1 1 0 8 0 sessionpl 144 113 0 94 1 0 1 1 0 8 0 pgrppl 48 460 0 441 1 0 1 1 0 8 0 ucredpl 104 26978 0 26967 1 0 1 1 0 8 0 zombiepl 144 26701 0 26699 1 0 1 1 0 8 0 processpl 1072 26767 0 26699 5 0 5 5 0 8 0 procpl 680 63745 0 63652 31 22 9 10 0 8 0 sosppl 168 204 0 204 29 28 1 1 0 8 1 sockpl 456 43248 0 42811 843 751 92 117 0 8 0 mcl64k 65536 666 0 666 55 54 1 1 0 8 1 mcl16k 16384 366 0 366 62 61 1 1 0 8 1 mcl12k 12288 704 0 704 45 44 1 1 0 8 1 mcl9k 9216 442 0 442 58 58 0 1 0 8 0 mcl8k 8192 1733 0 1733 35 34 1 1 0 8 1 mcl4k 4096 2971 0 2971 19 18 1 2 0 8 1 mcl2k2 2112 293 0 293 54 53 1 1 0 8 1 mcl2k 2048 113054 0 112714 147 76 71 84 0 8 0 mtagpl 96 4432 0 4422 61 60 1 13 0 8 0 mbufpl 256 415514 0 414544 822 690 132 212 0 8 0 bufpl 288 42976 0 36583 458 1 457 458 0 8 0 anonpl 24 2028844 0 2014532 284 183 101 125 0 188 0 amapchunkpl 152 662236 0 661276 228 186 42 52 0 158 0 amappl16 200 37104 0 36595 170 142 28 52 0 8 0 amappl15 192 11 0 10 1 0 1 1 0 8 0 amappl14 184 547 0 532 2 1 1 2 0 8 0 amappl13 176 17 0 16 1 0 1 1 0 8 0 amappl12 168 23935 0 23899 2 0 2 2 0 8 0 amappl11 160 55 0 44 1 0 1 1 0 8 0 amappl10 152 127 0 113 2 1 1 1 0 8 0 amappl9 144 236 0 236 12 11 1 1 0 8 1 amappl8 136 895 0 774 5 0 5 5 0 8 0 amappl7 128 449 0 424 2 0 2 2 0 8 0 amappl6 120 1561 0 1546 1 0 1 1 0 8 0 amappl5 112 451 0 443 1 0 1 1 0 8 0 amappl4 104 1104 0 1079 2 1 1 2 0 8 0 amappl3 96 129314 0 129193 11 7 4 4 0 8 0 amappl2 88 23871 0 23788 3 1 2 3 0 8 0 amappl1 80 92791 0 92262 22 10 12 22 0 8 0 amappl 88 207108 0 206790 8 0 8 8 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 72 142 0 12 3 0 3 3 0 8 0 uaddrrnd 24 22264 0 21989 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 22264 0 21989 2 0 2 2 0 8 0 vmmpekpl 168 166832 0 166722 6 0 6 6 0 8 0 vmmpepl 168 1326066 0 1323269 697 555 142 170 0 357 0 vmsppl 352 22263 0 21989 35 9 26 26 0 8 0 rwobjpl 24 333074 0 300245 200 2 198 198 0 8 0 pdppl 4096 44534 0 44223 1587 1272 315 315 0 8 4 pvpl 32 5816830 0 5796449 730 540 190 351 0 265 10 pmappl 216 22263 0 21989 17 1 16 16 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 4283 0 2906 44 3 41 41 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a6142a8,deadbeefdeadbeef,0,c0001c30,fffffd80651871c8,fffffd807f7d77b8) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a6142a8,deadbeefdeadbeef,0,c0001c30,fffffd80651871c8,fffffd807f7d77b8) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd80651871c8,4,40001c30,0,ffff80002a6142a8) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd80651871c8,4,40001c30,0,ffff80002a6142a8) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a6142a8,ffff800035cc33e0,ffff800035cc3420) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff800035cc34e0) at syscall+0x5ef sys/arch/amd64/amd64/trap.c:591 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x636800a5f30, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a6142a8,deadbeefdeadbeef,0,c0001c30,fffffd80651871c8,fffffd807f7d77b8) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a6142a8,deadbeefdeadbeef,0,c0001c30,fffffd80651871c8,fffffd807f7d77b8) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd80651871c8,4,40001c30,0,ffff80002a6142a8) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd80651871c8,4,40001c30,0,ffff80002a6142a8) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a6142a8,ffff800035cc33e0,ffff800035cc3420) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff800035cc34e0) at syscall+0x5ef sys/arch/amd64/amd64/trap.c:591 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x636800a5f30, count: -5