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 0xffff80003ca54a70 rbp 0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xffffffffffffffc2 r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0 r11 0 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff82c85c0b done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80003c939888 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor) tid=83663 pid=17216 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7bd770,0xffffffff83919df0 process=0xffff8000ffff8018 user=0xffff80003c934000, vmspace=0xfffffd8074d3f748 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 17216 487290 90591 0 2 0 syz-executor *17216 83663 90591 0 7 0x4000000 syz-executor 30648 307393 44721 0 2 0 syz-executor 30648 235210 44721 0 2 0x4000000 syz-executor 71460 186288 26792 0 2 0x82000 syz-executor 71460 283146 26792 0 3 0x4002000 suspend syz-executor 82499 480632 22534 0 3 0x80 nanoslp syz-executor 82499 445864 22534 0 3 0x4000080 pipewr syz-executor 82499 425586 22534 0 3 0x4000080 pipewr syz-executor 82499 218536 22534 0 3 0x4000080 fsleep syz-executor 94994 516722 49416 0 3 0x80 nanoslp syz-executor 94994 35309 49416 0 3 0x4000080 fsleep syz-executor 94994 171128 49416 0 3 0x4000080 fsleep syz-executor 61340 493716 54643 0 2 0 syz-executor 61340 348439 54643 0 3 0x4000080 fsleep syz-executor 61340 466501 54643 0 3 0x4000080 fsleep syz-executor 61340 156358 54643 0 3 0x4000080 fsleep syz-executor 87110 444333 42227 0 2 0 syz-executor 87110 3584 42227 0 3 0x4000080 lockf syz-executor 87110 407340 42227 0 3 0x4000080 fsleep syz-executor 62053 309836 50422 0 3 0x82 piperd syz-executor 49416 448567 50422 0 3 0x82 nanoslp syz-executor 42227 516958 50422 0 3 0x82 nanoslp syz-executor 26792 134097 50422 0 3 0x82 nanoslp syz-executor 22534 184920 50422 0 3 0x82 nanoslp syz-executor 44721 218477 50422 0 3 0x82 nanoslp syz-executor 54643 153701 50422 0 3 0x82 nanoslp syz-executor 90591 109242 50422 0 3 0x82 nanoslp syz-executor 50422 203441 42996 0 2 0x2 syz-executor 42996 441465 10738 0 3 0x10008a sigsusp ksh 10738 505425 94052 0 3 0x98 kqread sshd-session 94052 473945 61543 0 3 0x92 kqread sshd-session 32156 28991 1 0 3 0x100083 ttyin getty 61543 499247 1 0 3 0x88 kqread sshd 64071 79495 94691 73 3 0x1100090 kqread syslogd 94691 51652 1 0 3 0x100082 sbwait syslogd 4211 39238 1 0 3 0x100080 kqread resolvd 16546 132484 845 77 3 0x100092 kqread dhcpleased 41128 482651 845 77 3 0x100092 kqread dhcpleased 845 36109 1 0 3 0x80 kqread dhcpleased 71064 10109 0 0 3 0x14200 bored smr 11515 350278 0 0 2 0x14200 zerothread 27916 69606 0 0 3 0x14200 aiodoned aiodoned 52014 310835 0 0 3 0x14200 syncer update 20869 108218 0 0 3 0x14200 cleaner cleaner 33950 326892 0 0 3 0x14200 reaper reaper 76839 414831 0 0 3 0x14200 pgdaemon pagedaemon 76205 189985 0 0 3 0x14200 bored viomb 81006 239690 0 0 3 0x40014200 acpi0 acpi0 96660 473207 0 0 3 0x14200 bored softnet0 84208 442012 0 0 3 0x14200 smrbar systqmp 17397 444427 0 0 3 0x14200 bored systq 19351 373430 0 0 3 0x40014200 tmoslp softclock 78546 467430 0 0 3 0x40014200 idle0 1 146272 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10187 11379K 11446K 166960K 11965 0 pcb 19 12K 12K 166960K 79 0 rtable 188 7K 8K 166960K 413 0 pf 26 12K 16K 166960K 54 0 ifaddr 34 6K 7K 166960K 59 0 ifgroup 42 1K 2K 166960K 77 0 sysctl 1 1K 9K 166960K 5 0 counters 30 17K 18K 166960K 45 0 ioctlops 0 0K 4K 166960K 79 0 iov 0 0K 12K 166960K 17 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1407 89K 89K 166960K 1710 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 15 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 415 0 sigio 0 0K 0K 166960K 73 0 proc 60 59K 83K 166960K 503 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 21 0 in_multi 77 5K 7K 166960K 117 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 382 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 239 147K 158K 166960K 5404 0 UVM aobj 17 6K 6K 166960K 17 0 pinsyscall 38 76K 92K 166960K 1483 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 9 0K 2K 166960K 35 0 temp 43 8652K 8716K 166960K 18809 0 kqueue 13 20K 26K 166960K 75 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 58 0 55 1 0 1 1 0 8 0 rtentry 136 124 0 46 4 0 4 4 0 8 0 unpcb 144 377 0 356 5 0 5 5 0 8 4 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 141 0 134 7 0 7 7 0 8 6 arp 96 20 0 6 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 328 388 0 375 7 0 7 7 0 8 5 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 112 25 0 7 1 0 1 1 0 8 0 pkpcb 40 2 0 1 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 9 0 9 1 0 1 1 0 8 1 pppxif 1384 2 0 2 1 0 1 1 0 8 1 pfrule 1344 1 0 1 1 0 1 1 0 8 1 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 558 0 158 33 0 33 33 0 8 6 art_table 40 560 0 158 6 0 6 6 0 8 0 art_node 32 123 0 43 1 0 1 1 0 8 0 sysvmsgpl 40 41 0 5 1 0 1 1 0 8 0 semapl 112 11 0 3 1 0 1 1 0 8 0 shmpl 112 12 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2090 0 587 95 0 95 95 0 8 0 ffsino 256 2090 0 587 95 0 95 95 0 8 0 nchpl 144 2699 0 1007 63 0 63 63 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 2421 0 0 135 0 135 135 0 8 0 namei 1024 8180 0 8180 2 0 2 2 0 8 2 vcpupl 3904 2 0 0 1 0 1 1 0 8 0 vmpool 800 2 0 0 1 0 1 1 0 8 0 kstatmem 264 38 0 20 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 13637 0 13637 8 0 8 8 1 8 8 plimitpl 152 135 0 116 1 0 1 1 0 8 0 sigapl 424 703 0 661 6 0 6 6 0 8 1 knotepl 120 14118 0 14071 9 0 9 9 0 8 7 kqueuepl 184 154 0 145 1 0 1 1 0 8 0 pipepl 304 171 0 142 5 0 5 5 0 8 2 fdescpl 448 688 0 659 5 0 5 5 0 8 1 filepl 120 3622 0 3387 12 0 12 12 0 8 4 lockfpl 104 125 0 119 1 0 1 1 0 8 0 lockfspl 48 58 0 54 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 36 0 20 1 0 1 1 0 8 0 ucredpl 104 448 0 437 1 0 1 1 0 8 0 zombiepl 144 661 0 661 1 0 1 1 0 8 1 processpl 1152 703 0 661 4 0 4 4 0 8 0 procpl 664 1150 0 1095 6 0 6 6 0 8 1 sockpl 552 869 0 831 13 2 11 13 0 8 8 mcl64k 65536 12 0 12 1 0 1 1 0 8 1 mcl8k 8192 6 0 6 1 0 1 1 0 8 1 mcl4k 4096 2857 0 2800 14 0 14 14 0 8 6 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 598 0 595 2 0 2 2 0 8 1 mtagpl 96 88 0 80 2 0 2 2 0 8 0 mbufpl 256 6968 0 6728 25 0 25 25 0 8 6 bufpl 280 7946 0 1725 445 0 445 445 0 8 0 anonpl 24 150053 0 146853 45 0 45 45 0 187 12 amapchunkpl 152 17722 0 17221 32 0 32 32 0 158 8 amappl16 200 3363 0 3332 24 12 12 15 0 8 8 amappl15 192 10 0 10 1 0 1 1 0 8 1 amappl14 184 3 0 3 1 0 1 1 0 8 1 amappl13 176 405 0 404 1 0 1 1 0 8 0 amappl12 168 1025 0 987 2 0 2 2 0 8 0 amappl11 160 10 0 10 1 0 1 1 0 8 1 amappl10 152 43 0 33 1 0 1 1 0 8 0 amappl9 144 275 0 274 1 0 1 1 0 8 0 amappl8 136 36 0 35 1 0 1 1 0 8 0 amappl7 128 78 0 76 1 0 1 1 0 8 0 amappl6 120 269 0 258 1 0 1 1 0 8 0 amappl5 112 70 0 62 1 0 1 1 0 8 0 amappl4 104 374 0 349 1 0 1 1 0 8 0 amappl3 96 2798 0 2704 3 0 3 3 0 8 0 amappl2 88 803 0 730 2 0 2 2 0 8 0 amappl1 80 9796 0 9259 12 0 12 12 0 8 0 amappl 88 4655 0 4486 5 0 5 5 0 92 0 uvmvnodes 80 107 0 0 3 0 3 3 0 8 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 128 254 0 254 1 0 1 1 0 8 1 dma64 64 7 0 7 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 16 0 0 1 0 1 1 0 8 0 uaddrrnd 24 688 0 659 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 688 0 659 1 0 1 1 0 8 0 vmmpekpl 168 7091 0 7061 2 0 2 2 0 8 0 vmmpepl 168 51260 0 49458 91 0 91 91 0 357 10 vmsppl 368 687 0 659 4 0 4 4 0 8 1 rwobjpl 40 17200 0 16223 13 0 13 13 0 8 1 pdppl 4096 1387 0 1320 96 28 68 79 0 8 1 pvpl 32 346783 0 337966 110 0 110 110 0 265 19 pmappl 216 689 0 659 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 390 0 28 11 0 11 11 0 8 0 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