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(ffff80002a6847f8,dead4110dead4110,0,a0c7df9b,fffffd8069cbf5f0,fffffd807f7d74e0) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a6847f8,dead4110dead4110,0,a0c7df9b,fffffd8069cbf5f0,fffffd807f7d74e0) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd8069cbf5f0,4,20c7df9b,0,ffff80002a6847f8) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8069cbf5f0,4,20c7df9b,0,ffff80002a6847f8) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a6847f8,ffff8000377dd7a0,ffff8000377dd6f0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff8000377dd7a0) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafbf6ce7910, count: -5 ddb> show registers rdi 0xffff800030f3c000 rsi 0xe4e rbp 0xffff8000377dd4c0 rbx 0xdead4110dead4110 rdx 0xffff800030f3c000 rcx 0xe4d rax 0xffffffff819906e3 ktrops+0x43 r8 0xfffffd8069cbf5f0 r9 0xfffffd807f7d74e0 r10 0xce8437359892edf r11 0xf5b303fb9bf0e37a r12 0xdead4110dead4110 r13 0xfffffd807f7d74e0 r14 0xffff80002a6847f8 r15 0xa0c7df9b rip 0xffffffff819906ee ktrops+0x4e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000377dd440 ss 0x10 ktrops+0x4e: movq 0x8(%rbx),%r14 ddb> show proc PROC (syz-executor.6) tid=255559 pid=801 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=0xffff80002a6842a8,0xffff80002a5c6d60 process=0xffff8000ffff50d0 user=0xffff8000377d8000, vmspace=0xfffffd806920a2e8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 30616 9550 9092 0 2 0 syz-executor.4 30616 363206 9092 0 2 0x4000000 syz-executor.4 801 396102 58566 0 2 0 syz-executor.6 * 801 255559 58566 0 7 0x4000000 syz-executor.6 80941 8302 15425 60928 2 0x10 syz-executor.0 80941 150082 15425 60928 3 0x4000090 fsleep syz-executor.0 11494 500649 0 0 2 0x14280 nfsio 5826 324436 0 0 2 0x14280 nfsio 29259 462632 0 0 2 0x14280 nfsio 27815 77037 0 0 2 0x14280 nfsio 4465 480864 0 0 2 0x14280 nfsio 66937 202233 0 0 2 0x14280 nfsio 41387 326357 0 0 2 0x14280 nfsio 96091 128107 0 0 2 0x14280 nfsio 29643 308728 0 0 2 0x14280 nfsio 72866 244685 0 0 2 0x14280 nfsio 32877 392827 0 0 2 0x14280 nfsio 73788 520576 0 0 2 0x14280 nfsio 82912 410719 0 0 2 0x14280 nfsio 62504 368085 0 0 2 0x14280 nfsio 77220 412681 0 0 2 0x14280 nfsio 49400 412411 0 0 2 0x14280 nfsio 5995 219293 0 0 2 0x14280 nfsio 81308 478016 0 0 2 0x14280 nfsio 94506 311999 27166 0 2 0x2 syz-executor.2 15425 462594 27166 0 3 0x82 nanoslp syz-executor.0 9092 317182 27166 0 3 0x82 nanoslp syz-executor.4 99764 269830 1 0 3 0x100083 ttyin getty 38054 104342 27166 0 2 0x2 syz-executor.1 61861 5556 0 0 3 0x14200 acct acct 98697 243012 27166 0 2 0x2 syz-executor.7 69764 38924 0 0 3 0x14200 bored sosplice 7905 459642 27166 0 2 0x2 syz-executor.5 58566 398964 27166 0 3 0x82 nanoslp syz-executor.6 76026 377542 27166 0 3 0x82 nanoslp syz-executor.3 27166 28126 59510 0 3 0x2000082 thrsleep syz-fuzzer 27166 350966 59510 0 3 0x6000082 nanoslp syz-fuzzer 27166 469920 59510 0 3 0x6000082 wait syz-fuzzer 27166 468096 59510 0 3 0x6000082 wait syz-fuzzer 27166 230371 59510 0 3 0x6000082 thrsleep syz-fuzzer 27166 420378 59510 0 3 0x6000082 wait syz-fuzzer 27166 182461 59510 0 3 0x6000082 wait syz-fuzzer 27166 408903 59510 0 3 0x6000082 wait syz-fuzzer 27166 244630 59510 0 3 0x6000082 wait syz-fuzzer 27166 206339 59510 0 3 0x6000082 thrsleep syz-fuzzer 27166 438356 59510 0 3 0x6000082 kqread syz-fuzzer 27166 815 59510 0 3 0x6000082 wait syz-fuzzer 27166 194079 59510 0 3 0x6000082 thrsleep syz-fuzzer 27166 192738 59510 0 3 0x6000082 wait syz-fuzzer 27166 208934 59510 0 3 0x6000082 thrsleep syz-fuzzer 59510 354691 3762 0 3 0x10008a sigsusp ksh 3762 39107 11159 0 3 0x9a kqread sshd 11159 20435 1 0 3 0x88 kqread sshd 59251 403230 51168 73 3 0x1100090 kqread syslogd 51168 302754 1 0 3 0x100082 netio syslogd 65284 170435 1 0 3 0x100080 kqread resolvd 24926 336182 82162 77 3 0x100092 kqread dhcpleased 27698 200922 82162 77 3 0x100092 kqread dhcpleased 82162 305647 1 0 3 0x80 kqread dhcpleased 15729 356418 0 0 3 0x14200 bored smr 79535 242797 0 0 2 0x14200 zerothread 19847 507880 0 0 3 0x14200 aiodoned aiodoned 7914 514409 0 0 3 0x14200 syncer update 98827 2962 0 0 3 0x14200 cleaner cleaner 90623 133172 0 0 3 0x14200 reaper reaper 35741 67154 0 0 3 0x14200 pgdaemon pagedaemon 30336 235618 0 0 3 0x14200 bored viomb 57968 341940 0 0 3 0x40014200 acpi0 acpi0 95934 308215 0 0 3 0x14200 bored softnet3 88302 302807 0 0 3 0x14200 bored softnet2 78616 381194 0 0 3 0x14200 bored softnet1 97414 234316 0 0 3 0x14200 bored softnet0 87322 202148 0 0 3 0x14200 bored systqmp 58710 175495 0 0 3 0x14200 bored systq 26957 325787 0 0 3 0x40014200 tmoslp softclock 10401 301010 0 0 3 0x40014200 idle0 1 134969 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 10171 6396K 8982K 166960K 17218 0 pcb 15 10K 10K 166960K 289 0 rtable 144 12K 13K 166960K 1096 0 pf 25 8K 9K 166960K 172 0 ifaddr 32 10K 11K 166960K 177 0 ifgroup 42 1K 2K 166960K 283 0 sysctl 4 1K 1K 166960K 10 0 counters 28 17K 17K 166960K 92 0 ioctlops 0 0K 2K 166960K 178 0 iov 0 0K 50K 166960K 291 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1284 80K 81K 166960K 3786 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 13 0 dirhash 12 2K 2K 166960K 51 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 13 45K 69K 166960K 7667 0 sigio 0 0K 0K 166960K 48 0 proc 58 59K 83K 166960K 1310 0 subproc 104 6K 6K 166960K 338 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 483 0 in_multi 54 3K 7K 166960K 454 0 ether_multi 1 0K 0K 166960K 36 0 mrt 2 0K 0K 166960K 22 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 967 0 pfkey data 0 0K 0K 166960K 11 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 353 154K 163K 166960K 66200 0 UVM aobj 70 5K 5K 166960K 70 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 292 0 NDP 9 0K 2K 166960K 125 0 temp 75 6764K 7400K 166960K 79865 0 kqueue 12 18K 26K 166960K 589 0 SYN cache 2 104K 112K 166960K 3 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 236 0 233 1 0 1 1 0 8 0 rtentry 112 344 0 282 4 0 4 4 0 8 0 unpcb 144 1924 0 1911 2 1 1 2 0 8 0 syncache 336 183 0 183 2 1 1 1 0 8 1 tcpqe 32 379 0 379 2 1 1 1 0 8 1 tcpcb 808 1261 0 1214 9 0 9 9 0 8 1 arp 88 59 0 51 1 0 1 1 0 8 0 ipq 40 6 0 5 1 0 1 1 0 8 0 ipqe 40 13 0 12 1 0 1 1 0 8 0 inpcb 360 2933 0 2883 9 0 9 9 0 8 0 nd6 104 82 0 70 1 0 1 1 0 8 0 pkpcb 40 20 0 20 2 1 1 1 0 8 1 kcovpl 48 26 0 18 1 0 1 1 0 8 0 ppxss 1072 17 0 17 2 1 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1347 0 1068 29 8 21 29 0 8 0 art_table 32 1348 0 1068 4 0 4 4 0 8 0 art_node 16 335 0 279 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 9 1 0 1 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 67 0 0 2 0 2 2 0 8 0 dirhash 1024 43 0 26 3 0 3 3 0 8 0 dino2pl 256 11180 0 9726 92 0 92 92 0 8 0 ffsino 240 11180 0 9726 87 0 87 87 0 8 0 nchpl 144 20090 0 18459 63 0 63 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 52658 0 52656 3 2 1 3 0 8 0 vcpupl 2048 32 0 0 4 0 4 4 0 8 0 vmpool 664 48 0 16 3 0 3 3 0 8 0 kstatmem 264 146 0 128 2 0 2 2 0 8 0 scxspl 216 61963 0 61963 8 7 1 8 1 8 1 plimitpl 152 379 0 364 1 0 1 1 0 8 0 sigapl 424 8015 0 7954 8 0 8 8 0 8 0 futexpl 64 44294 0 44293 2 1 1 1 0 8 0 knotepl 120 66164 0 66082 10 7 3 10 0 8 0 kqueuepl 184 637 0 629 1 0 1 1 0 8 0 pipepl 288 368 0 340 3 0 3 3 0 8 0 fdescpl 432 7917 0 7893 4 0 4 4 0 8 0 filepl 120 22239 0 22004 9 1 8 9 0 8 0 lockfpl 104 985 0 982 1 0 1 1 0 8 0 lockfspl 48 370 0 367 1 0 1 1 0 8 0 sessionpl 144 45 0 29 1 0 1 1 0 8 0 pgrppl 48 55 0 39 1 0 1 1 0 8 0 ucredpl 104 3470 0 3458 1 0 1 1 0 8 0 zombiepl 144 7955 0 7954 1 0 1 1 0 8 0 processpl 1072 8015 0 7954 5 0 5 5 0 8 0 procpl 680 16215 0 16137 8 0 8 8 0 8 0 sosppl 168 173 0 169 1 0 1 1 0 8 0 sockpl 488 5123 0 5057 14 0 14 14 0 8 0 mcl64k 65536 129 0 129 1 0 1 1 0 8 1 mcl16k 16384 96 0 96 1 0 1 1 0 8 1 mcl12k 12288 39 0 39 2 1 1 1 0 8 1 mcl9k 9216 44 0 44 2 1 1 1 0 8 1 mcl8k 8192 233 0 233 1 0 1 1 0 8 1 mcl4k 4096 201 0 201 2 1 1 1 0 8 1 mcl2k2 2112 17 0 17 1 1 0 1 0 8 0 mcl2k 2048 58361 0 58305 50 37 13 41 0 8 4 mtagpl 96 455 0 353 8 0 8 8 0 8 0 mbufpl 256 189712 0 189406 212 167 45 100 0 8 8 bufpl 280 15385 0 8984 458 0 458 458 0 8 0 anonpl 24 740671 0 730378 102 20 82 86 0 188 14 amapchunkpl 152 208017 0 207324 45 11 34 43 0 158 2 amappl16 200 14526 0 14214 49 25 24 28 0 8 7 amappl15 192 50 0 49 1 0 1 1 0 8 0 amappl14 184 242 0 230 2 1 1 2 0 8 0 amappl13 176 67 0 67 1 1 0 1 0 8 0 amappl12 168 8814 0 8787 2 0 2 2 0 8 0 amappl11 160 53 0 43 1 0 1 1 0 8 0 amappl10 152 81 0 69 1 0 1 1 0 8 0 amappl9 144 268 0 268 1 1 0 1 0 8 0 amappl8 136 309 0 233 3 0 3 3 0 8 0 amappl7 128 201 0 178 2 0 2 2 0 8 0 amappl6 120 505 0 491 1 0 1 1 0 8 0 amappl5 112 156 0 147 1 0 1 1 0 8 0 amappl4 104 550 0 527 2 1 1 2 0 8 0 amappl3 96 42013 0 41947 3 0 3 3 0 8 0 amappl2 88 8509 0 8442 3 1 2 3 0 8 0 amappl1 80 35416 0 34912 21 9 12 21 0 8 0 amappl 88 65347 0 65154 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 69 0 0 2 0 2 2 0 8 0 uaddrrnd 24 7965 0 7909 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7965 0 7909 1 0 1 1 0 8 0 vmmpekpl 168 46788 0 46721 4 0 4 4 0 8 0 vmmpepl 168 458789 0 456821 127 16 111 116 0 357 11 vmsppl 352 7964 0 7909 6 0 6 6 0 8 0 rwobjpl 24 104234 0 96939 46 0 46 46 0 8 0 pdppl 4096 15936 0 15850 260 164 96 96 0 8 10 pvpl 32 2287847 0 2272128 325 167 158 305 0 265 18 pmappl 216 7964 0 7909 4 0 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 771 0 382 13 0 13 13 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a6847f8,dead4110dead4110,0,a0c7df9b,fffffd8069cbf5f0,fffffd807f7d74e0) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a6847f8,dead4110dead4110,0,a0c7df9b,fffffd8069cbf5f0,fffffd807f7d74e0) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd8069cbf5f0,4,20c7df9b,0,ffff80002a6847f8) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8069cbf5f0,4,20c7df9b,0,ffff80002a6847f8) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a6847f8,ffff8000377dd7a0,ffff8000377dd6f0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff8000377dd7a0) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafbf6ce7910, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a6847f8,dead4110dead4110,0,a0c7df9b,fffffd8069cbf5f0,fffffd807f7d74e0) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a6847f8,dead4110dead4110,0,a0c7df9b,fffffd8069cbf5f0,fffffd807f7d74e0) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd8069cbf5f0,4,20c7df9b,0,ffff80002a6847f8) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8069cbf5f0,4,20c7df9b,0,ffff80002a6847f8) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a6847f8,ffff8000377dd7a0,ffff8000377dd6f0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff8000377dd7a0) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafbf6ce7910, count: -5