kernel: protection fault trap, code=0 Stopped at done_flush+0x38: movl %eax,%dr6 ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace end trace frame: 0x0, count: -1 ddb> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800037807820 rbp 0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xfffffffffffffffc r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0 r11 0 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff81917bab done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff8000377dcea8 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor.0) tid=133298 pid=80522 tcnt=2 stat=onproc flags process=8000000 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a608a58,0xffff80002db594c8 process=0xffff80002db09d78 user=0xffff8000377d8000, vmspace=0xfffffd806ed69c20 estcpu=36, cpticks=23, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 82067 378780 97551 0 2 0x8000000 syz-executor.6 82067 64314 97551 0 3 0xc000080 fsleep syz-executor.6 82067 401589 97551 0 3 0xc000080 fsleep syz-executor.6 55985 159859 32270 0 2 0x8000000 syz-executor.4 55985 412335 32270 0 3 0xc000080 fsleep syz-executor.4 67277 432432 70129 0 2 0x8000000 syz-executor.7 67277 190535 70129 0 3 0xc000080 fsleep syz-executor.7 80522 189834 19422 0 2 0x8000000 syz-executor.0 *80522 133298 19422 0 7 0xc000000 syz-executor.0 99690 222722 2251 0 2 0x8000002 syz-executor.2 97551 109785 2251 0 3 0x8000082 nanoslp syz-executor.6 70129 113900 2251 0 3 0x8000082 nanoslp syz-executor.7 42437 132552 2251 0 2 0x8000002 syz-executor.5 19422 266326 2251 0 3 0x8000082 nanoslp syz-executor.0 32270 147938 2251 0 3 0x8000082 nanoslp syz-executor.4 24233 265328 2251 0 3 0x8000082 nanoslp syz-executor.3 91754 432972 2251 0 2 0x8000002 syz-executor.1 84009 241046 1 0 3 0x18100083 ttyin getty 2656 259789 0 0 3 0x14200 acct acct 64566 164008 0 0 3 0x14200 bored sosplice 2251 111121 37435 0 3 0x1a000082 kqread syz-fuzzer 2251 72757 37435 0 3 0x1e000082 nanoslp syz-fuzzer 2251 31328 37435 0 3 0x1e000082 wait syz-fuzzer 2251 417875 37435 0 3 0x1e000082 thrsleep syz-fuzzer 2251 383872 37435 0 3 0x1e000082 wait syz-fuzzer 2251 7657 37435 0 3 0x1e000082 wait syz-fuzzer 2251 294986 37435 0 3 0x1e000082 thrsleep syz-fuzzer 2251 131778 37435 0 3 0x1e000082 wait syz-fuzzer 2251 451845 37435 0 3 0x1e000082 thrsleep syz-fuzzer 2251 217007 37435 0 3 0x1e000082 wait syz-fuzzer 2251 342096 37435 0 3 0x1e000082 thrsleep syz-fuzzer 2251 371721 37435 0 3 0x1e000082 wait syz-fuzzer 2251 147043 37435 0 3 0x1e000082 wait syz-fuzzer 2251 370740 37435 0 3 0x1e000082 wait syz-fuzzer 37435 284098 43788 0 3 0x810008a sigsusp ksh 43788 491373 66561 0 3 0x1800009a kqread sshd 66561 158393 1 0 3 0x18000088 kqread sshd 16757 358151 84453 73 3 0x19100090 kqread syslogd 84453 127381 1 0 3 0x18100082 sbwait syslogd 21827 476682 1 0 3 0x18100080 kqread resolvd 17263 244851 8062 77 3 0x18100092 kqread dhcpleased 64142 157572 8062 77 3 0x18100092 kqread dhcpleased 8062 250437 1 0 3 0x18000080 kqread dhcpleased 33606 234697 0 0 3 0x14200 bored smr 76617 173921 0 0 2 0x14200 zerothread 84175 396463 0 0 3 0x14200 aiodoned aiodoned 2358 10973 0 0 3 0x14200 syncer update 75311 20490 0 0 3 0x14200 cleaner cleaner 89311 521890 0 0 3 0x14200 reaper reaper 39466 65863 0 0 3 0x14200 pgdaemon pagedaemon 12599 75924 0 0 3 0x14200 bored viomb 31623 159324 0 0 3 0x40014200 acpi0 acpi0 89958 348959 0 0 3 0x14200 bored softnet3 9005 464999 0 0 3 0x14200 bored softnet2 28740 37823 0 0 3 0x14200 bored softnet1 8865 42281 0 0 3 0x14200 bored softnet0 2407 56934 0 0 3 0x14200 bored systqmp 8819 227943 0 0 3 0x14200 bored systq 73633 109861 0 0 3 0x40014200 tmoslp softclock 42525 146822 0 0 3 0x40014200 idle0 1 396578 0 0 3 0x8000082 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 10191 6743K 10646K 166960K 17034 0 pcb 17 18K 19K 166960K 623 0 rtable 206 8K 10K 166960K 2765 0 pf 29 8K 9K 166960K 259 0 ifaddr 41 11K 12K 166960K 390 0 ifgroup 50 2K 2K 166960K 468 0 sysctl 2 0K 0K 166960K 2 0 counters 30 17K 17K 166960K 132 0 ioctlops 0 0K 2K 166960K 283 0 iov 0 0K 16K 166960K 144 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1533 96K 97K 166960K 5155 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 34 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 31 0 dirhash 12 2K 3K 166960K 117 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 14 49K 109K 166960K 3387 0 sigio 0 0K 0K 166960K 73 0 proc 58 59K 124K 166960K 2669 0 subproc 104 6K 8K 166960K 1161 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 300 0 in_multi 95 7K 7K 166960K 1010 0 ether_multi 1 0K 0K 166960K 13 0 mrt 1 0K 0K 166960K 7 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 1611 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 272 103K 125K 166960K 28740 0 UVM aobj 131 4K 4K 166960K 133 0 pinsyscall 35 70K 112K 166960K 6534 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 166 0 NDP 11 0K 2K 166960K 277 0 temp 74 6812K 6878K 166960K 133175 0 kqueue 12 18K 28K 166960K 341 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 120 414 0 411 3 0 3 3 0 8 2 rtentry 112 982 0 889 4 0 4 4 0 8 0 unpcb 144 2565 0 2552 7 0 7 7 0 8 6 syncache 336 8 0 8 1 0 1 1 0 8 1 sackhl 24 3 4 3 1 0 1 1 0 8 1 tcpqe 32 8 0 8 1 0 1 1 0 8 1 tcpcb 808 1061 0 1055 8 0 8 8 0 8 7 arp 88 175 0 159 1 0 1 1 0 8 0 ipq 40 11 0 10 1 0 1 1 0 8 0 ipqe 40 145 0 144 1 0 1 1 0 8 0 inpcb 352 4023 0 4013 22 13 9 17 0 8 8 nd6 104 264 0 240 1 0 1 1 0 8 0 pkpcb 40 13 0 13 1 0 1 1 0 8 1 kcovpl 48 89 0 81 1 0 1 1 0 8 0 ppxss 1072 10 0 10 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 3950 0 3540 67 38 29 31 0 8 1 art_table 32 3951 0 3540 4 0 4 4 0 8 0 art_node 16 978 0 895 1 0 1 1 0 8 0 sysvmsgpl 40 62 0 50 1 0 1 1 0 8 0 semapl 112 29 0 19 1 0 1 1 0 8 0 shmpl 112 130 0 2 4 0 4 4 0 8 0 dirhash 1024 87 0 70 3 0 3 3 0 8 0 dino2pl 256 5883 0 4359 96 0 96 96 0 8 0 ffsino 240 5883 0 4359 90 0 90 90 0 8 0 nchpl 144 9948 0 8216 66 0 66 66 0 8 0 uvmvnodes 80 8512 0 0 174 0 174 174 0 8 0 vnodes 216 8512 0 0 473 0 473 473 0 8 0 namei 1024 46154 0 46152 2 0 2 2 0 8 1 vcpupl 3904 5 0 0 1 0 1 1 0 8 0 vmpool 664 14 0 9 1 0 1 1 0 8 0 kstatmem 264 226 0 204 2 0 2 2 0 8 0 scxspl 216 73087 0 73087 8 0 8 8 1 8 8 plimitpl 152 740 0 723 1 0 1 1 0 8 0 sigapl 424 3548 0 3504 9 0 9 9 0 8 2 futexpl 64 40651 0 40647 1 0 1 1 0 8 0 knotepl 120 14486 0 14404 30 19 11 18 0 8 7 kqueuepl 184 971 0 963 4 0 4 4 0 8 3 pipepl 288 812 0 784 5 0 5 5 0 8 2 fdescpl 432 3510 0 3484 5 0 5 5 0 8 0 filepl 120 26496 0 26252 17 1 16 17 0 8 8 lockfpl 104 1095 0 1091 2 0 2 2 0 8 1 lockfspl 48 342 0 338 1 0 1 1 0 8 0 sessionpl 144 102 0 86 1 0 1 1 0 8 0 pgrppl 48 132 0 116 1 0 1 1 0 8 0 ucredpl 104 3755 0 3745 1 0 1 1 0 8 0 zombiepl 144 3505 0 3504 1 0 1 1 0 8 0 processpl 1072 3548 0 3504 6 0 6 6 0 8 1 procpl 656 6708 0 6646 9 0 9 9 0 8 2 sosppl 168 22 0 22 1 0 1 1 0 8 1 sockpl 504 7131 0 7105 79 67 12 27 0 8 8 mcl64k 65536 12 0 12 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 52 0 52 1 0 1 1 0 8 1 mcl4k 4096 9 0 9 1 0 1 1 0 8 1 mcl2k 2048 36157 0 36056 41 20 21 40 0 8 7 mtagpl 96 146 0 138 1 0 1 1 0 8 0 mbufpl 256 102595 0 102389 402 382 20 378 0 8 5 bufpl 280 12573 0 4061 609 0 609 609 0 8 0 anonpl 24 546466 0 535442 77 0 77 77 0 188 10 amapchunkpl 152 92936 0 92030 44 0 44 44 0 158 9 amappl16 200 11815 0 11690 37 20 17 21 0 8 8 amappl15 192 108 0 107 1 0 1 1 0 8 0 amappl14 184 469 0 455 2 0 2 2 0 8 1 amappl13 176 10 0 9 1 0 1 1 0 8 0 amappl12 168 5244 0 5217 3 0 3 3 0 8 1 amappl11 160 48 0 38 1 0 1 1 0 8 0 amappl10 152 137 0 126 1 0 1 1 0 8 0 amappl9 144 155 0 155 1 0 1 1 0 8 1 amappl8 136 291 0 260 2 0 2 2 0 8 0 amappl7 128 86 0 73 1 0 1 1 0 8 0 amappl6 120 1318 0 1303 2 0 2 2 0 8 1 amappl5 112 505 0 493 1 0 1 1 0 8 0 amappl4 104 1065 0 1034 2 0 2 2 0 8 1 amappl3 96 17496 0 17417 3 0 3 3 0 8 0 amappl2 88 4125 0 4055 3 0 3 3 0 8 0 amappl1 80 24141 0 23652 22 3 19 22 0 8 7 amappl 88 27529 0 27343 6 0 6 6 0 92 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 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 3524 0 3493 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3524 0 3493 1 0 1 1 0 8 0 vmmpekpl 168 30093 0 30023 4 0 4 4 0 8 0 vmmpepl 168 248987 0 247211 111 0 111 111 0 357 26 vmsppl 344 3523 0 3493 4 0 4 4 0 8 0 rwobjpl 24 71357 0 61655 59 0 59 59 0 8 0 pdppl 4096 7054 0 6991 303 234 69 86 0 8 6 pvpl 32 1466518 0 1445374 368 13 355 368 0 265 184 pmappl 216 3523 0 3493 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1104 0 741 21 0 21 21 0 8 6 ddb> machine ddbcpu 0 No such command ddb> trace end trace frame: 0x0, count: -1 ddb> machine ddbcpu 1 No such command ddb> trace end trace frame: 0x0, count: -1