kernel: double fault trap, code=0 Stopped at restore_saved+0x35: xorq 0x30(%rsp),%r11 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 0xffffffff82c5e000 end+0x25e000 rsi 0xffff80002166ba48 rbp 0 rbx 0 rdx 0 rcx 0xfffffd8061664538 rax 0x23 r8 0 r9 0 r10 0x2ee9d06d88da4b76 r11 0xb857a886b2fd0323 r12 0xffff80002166ba48 r13 0xffff8000216fe000 r14 0xffff80002166f500 r15 0xffff80002166ba48 rip 0xffffffff8205e1e7 restore_saved+0x35 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0 ss 0x10 restore_saved+0x35: xorq 0x30(%rsp),%r11 ddb> show proc PROC (syz-executor.0) pid=172114 stat=onproc flags process=0 proc=0 pri=84, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff80002166aa88,0xffff80002166a7f8 process=0xffff80002312b790 user=0xffff8000216fe000, vmspace=0xfffffd8061665448 estcpu=34, cpticks=8, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *80207 172114 57985 0 7 0 syz-executor.0 80207 72676 57985 0 3 0x4000000 fltagain2 syz-executor.0 80207 235727 57985 0 3 0x4000000 biowait syz-executor.0 80207 91598 57985 0 3 0x4000080 fsleep syz-executor.0 74265 280075 66905 0 3 0x2 biowait syz-executor.3 42531 36942 66905 0 3 0x82 piperd syz-executor.1 70284 143090 0 0 3 0x14200 acct acct 70508 16261 66905 0 3 0x82 nanoslp syz-executor.2 21062 138793 1 0 3 0x100083 ttyin getty 13840 122551 0 0 3 0x14200 bored sosplice 57985 471715 66905 0 3 0x82 nanoslp syz-executor.0 66905 300403 2698 0 3 0x82 kqread syz-fuzzer 66905 438545 2698 0 3 0x4000082 nanoslp syz-fuzzer 66905 20493 2698 0 3 0x4000082 thrsleep syz-fuzzer 66905 178005 2698 0 3 0x4000082 thrsleep syz-fuzzer 66905 134701 2698 0 3 0x4000082 thrsleep syz-fuzzer 66905 36581 2698 0 3 0x4000082 thrsleep syz-fuzzer 66905 494811 2698 0 3 0x4000082 thrsleep syz-fuzzer 2698 184178 31835 0 3 0x10008a sigsusp ksh 31835 196795 4582 0 3 0x9a poll sshd 4582 429116 1 0 3 0x88 poll sshd 45270 29688 40999 73 3 0x100090 kqread syslogd 40999 179178 1 0 3 0x100082 netio syslogd 13659 247902 1 0 3 0x100080 kqread resolvd 44469 107561 93872 77 3 0x100092 kqread dhcpleased 32045 180486 93872 77 3 0x100092 kqread dhcpleased 93872 383897 1 0 3 0x80 kqread dhcpleased 96401 323239 0 0 3 0x14200 bored smr 29417 479734 0 0 2 0x14200 zerothread 94540 197143 0 0 3 0x14200 aiodoned aiodoned 16542 315728 0 0 3 0x14200 syncer update 82337 378143 0 0 3 0x14200 cleaner cleaner 18907 378517 0 0 3 0x14200 reaper reaper 19579 15452 0 0 3 0x14200 pgdaemon pagedaemon 43818 478317 0 0 3 0x14200 bored viomb 69231 273573 0 0 3 0x40014200 acpi0 acpi0 94914 456408 0 0 3 0x14200 bored softnet 78366 279394 0 0 3 0x14200 bored systqmp 99140 27491 0 0 3 0x14200 bored systq 6474 328514 0 0 3 0x40014200 bored softclock 11614 148179 0 0 3 0x40014200 idle0 1 45567 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 10176 6449K 6920K 78643K 15202 0 pcb 13 13K 15K 78643K 343 0 rtable 144 18K 19K 78643K 3414 0 ifaddr 67 16K 16K 78643K 1243 0 sysctl 2 0K 0K 78643K 2 0 counters 23 16K 17K 78643K 73 0 ioctlops 0 0K 4K 78643K 1925 0 iov 1 12K 16K 78643K 504 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1293 81K 81K 78643K 2561 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 17 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 209 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 7 21K 41K 78643K 2967 0 sigio 0 0K 0K 78643K 6 0 proc 62 55K 71K 78643K 642 0 subproc 52 6K 6K 78643K 156 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 80 0 in_multi 44 2K 3K 78643K 237 0 ether_multi 1 0K 0K 78643K 38 0 mrt 1 0K 0K 78643K 28 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 175 784K 784K 78643K 175 0 exec 0 0K 2K 78643K 755 0 pfkey data 0 0K 1K 78643K 67 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 250 164K 164K 78643K 37433 0 UVM aobj 30 2K 2K 78643K 36 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 129 0 NDP 8 0K 1K 78643K 86 0 temp 100 4206K 4270K 78643K 20046 0 kqueue 13 15K 20K 78643K 121 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 880 0 877 13 11 2 3 0 8 1 rtentry 112 172 0 126 2 0 2 2 0 8 0 unpcb 136 2459 0 2446 21 20 1 6 0 8 0 syncache 296 35 0 35 7 7 0 1 0 8 0 tcpqe 32 148 0 148 4 4 0 1 0 8 0 tcpcb 736 961 0 957 36 28 8 10 0 8 7 arp 88 26 0 18 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 44 0 44 1 1 0 1 0 8 0 inpcb 304 2728 0 2721 63 57 6 14 0 8 5 rttmr 72 6 0 6 2 2 0 1 0 8 0 nd6 48 40 0 31 1 0 1 1 0 8 0 pkpcb 40 7 0 7 2 2 0 1 0 8 0 kcovpl 48 12 0 8 1 0 1 1 0 8 0 ppxss 1152 12 0 12 5 5 0 1 0 8 0 pfstscr 40 6 0 6 2 1 1 1 0 8 1 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfrktable 1344 204 0 191 2 0 2 2 0 8 0 pftag 88 37 0 31 1 0 1 1 0 8 0 pfqueue 264 1 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 2 1 1 0 1 0 8 0 pfstkey 112 12 0 12 2 1 1 1 0 8 1 pfstate 320 6 0 6 2 1 1 1 0 8 1 pfrule 1360 1006 0 818 16 0 16 16 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 699 0 494 18 5 13 18 0 8 0 art_table 32 700 0 494 3 0 3 3 0 8 0 art_node 16 168 0 129 1 0 1 1 0 8 0 sysvmsgpl 40 38 0 5 1 0 1 1 0 8 0 semapl 112 207 0 197 1 0 1 1 0 8 0 shmpl 112 33 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5264 0 3850 89 0 89 89 0 8 0 ffsino 240 5264 0 3850 84 0 84 84 0 8 0 nchpl 144 9285 0 7701 61 0 61 61 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 35117 0 35116 4 3 1 1 0 8 0 vcpupl 1984 73 0 1 10 0 10 10 0 8 0 vmpool 528 79 0 7 5 0 5 5 0 8 0 pfiaddrpl 120 102 0 84 1 0 1 1 0 8 0 scxspl 216 31107 0 31105 16 15 1 8 0 8 0 plimitpl 152 251 0 241 1 0 1 1 0 8 0 sigapl 424 3164 0 3131 6 1 5 5 0 8 1 futexpl 64 29265 0 29264 4 3 1 1 0 8 0 knotepl 112 2131 0 2080 3 0 3 3 0 8 0 kqueuepl 184 550 0 541 10 9 1 4 0 8 0 pipepl 304 615 0 598 20 16 4 11 0 8 2 fdescpl 432 3149 0 3131 3 0 3 3 0 8 0 filepl 120 25078 0 24926 55 47 8 13 0 8 3 lockfpl 104 862 0 859 3 2 1 2 0 8 0 lockfspl 48 189 0 186 1 0 1 1 0 8 0 sessionpl 144 28 0 16 1 0 1 1 0 8 0 pgrppl 48 31 0 19 1 0 1 1 0 8 0 ucredpl 96 2415 0 2405 1 0 1 1 0 8 0 zombiepl 144 3131 0 3130 1 0 1 1 0 8 0 processpl 1000 3164 0 3130 5 0 5 5 0 8 0 procpl 672 8086 0 8043 13 8 5 6 0 8 0 sosppl 168 37 0 37 7 7 0 1 0 8 0 sockpl 448 6074 0 6048 119 108 11 22 0 8 7 mcl64k 65536 457 0 457 8 7 1 1 0 8 1 mcl16k 16384 76 0 76 9 8 1 1 0 8 1 mcl12k 12288 296 0 296 6 5 1 1 0 8 1 mcl9k 9216 41 0 41 12 12 0 1 0 8 0 mcl8k 8192 206 0 206 7 6 1 1 0 8 1 mcl4k 4096 344 0 344 5 4 1 1 0 8 1 mcl2k2 2112 22 0 22 8 8 0 1 0 8 0 mcl2k 2048 82186 0 82125 25 16 9 16 0 8 0 mtagpl 96 577 0 309 8 1 7 7 0 8 0 mbufpl 256 172806 0 172081 525 472 53 441 0 8 5 bufpl 288 9492 0 3075 459 0 459 459 0 8 0 anonpl 24 855232 0 837553 151 39 112 135 0 188 1 amapchunkpl 152 102970 0 102376 65 38 27 37 0 158 1 amappl16 200 7582 0 6940 54 19 35 45 0 8 1 amappl15 192 13 0 11 2 1 1 1 0 8 0 amappl14 184 106 0 105 1 0 1 1 0 8 0 amappl13 176 1104 0 1102 1 0 1 1 0 8 0 amappl12 168 812 0 808 1 0 1 1 0 8 0 amappl11 160 284 0 273 1 0 1 1 0 8 0 amappl10 152 411 0 406 1 0 1 1 0 8 0 amappl9 144 468 0 464 1 0 1 1 0 8 0 amappl8 136 835 0 777 3 0 3 3 0 8 0 amappl7 128 394 0 386 1 0 1 1 0 8 0 amappl6 120 195 0 176 1 0 1 1 0 8 0 amappl5 112 3084 0 3068 1 0 1 1 0 8 0 amappl4 104 1277 0 1253 1 0 1 1 0 8 0 amappl3 96 1715 0 1697 1 0 1 1 0 8 0 amappl2 88 1588 0 1547 2 0 2 2 0 8 0 amappl1 80 58252 0 57808 12 1 11 12 0 8 0 amappl 88 36898 0 36738 5 0 5 5 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 35 0 6 1 0 1 1 0 8 0 uaddrrnd 24 3228 0 3138 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3228 0 3138 1 0 1 1 0 8 0 vmmpekpl 168 24528 0 24496 2 0 2 2 0 8 0 vmmpepl 168 290922 0 288833 192 90 102 129 0 357 2 vmsppl 272 3227 0 3138 8 1 7 7 0 8 0 rwobjpl 24 73993 0 66619 45 0 45 45 0 8 0 pdppl 4096 6464 0 6348 158 37 121 124 0 8 5 pvpl 32 1547135 0 1525973 275 94 181 236 0 265 2 pmappl 216 3227 0 3138 6 0 6 6 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1577 0 697 35 9 26 35 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