kernel: double fault trap, code=0 Stopped at restore_saved+0x32: 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 0xffffffff83e89000 end+0x489000 rsi 0xffff80002a7bc018 rbp 0 rbx 0 rdx 0 rcx 0xfffffd800b7b56d0 rax 0x1b r8 0xffff8000344f92e0 r9 0 r10 0x1d114b6bc93094e4 r11 0x22428b8b0bd9d05c r12 0xffff80002a7bc018 r13 0xffff80003a916000 r14 0xffff80002a7bd770 r15 0xffff80002a7bc018 rip 0xffffffff823a91dc restore_saved+0x32 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0 ss 0x10 restore_saved+0x32: xorq 0x30(%rsp),%r11 ddb> show proc PROC (syz-executor) tid=377238 pid=53085 tcnt=0 stat=onproc flags process=1008 proc=2c00 runpri=26, usrpri=64, slppri=26, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a7bc018 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c9e94f0,0xffff80003c93ba20 process=0xffff80003c9c04a0 user=0xffff80003a916000, vmspace=0xfffffd806a3cba28 estcpu=14, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 69791 178829 53760 0 2 0 syz-executor 69791 147129 53760 0 3 0x4000000 biowait syz-executor 69791 120696 53760 0 3 0x4000000 inode syz-executor 77112 35 11221 0 2 0x1000000 syz-executor 77112 366685 11221 0 3 0x5000080 fsleep syz-executor 8967 479050 23069 0 2 0 syz-executor 8967 206429 23069 0 3 0x4000080 fifor syz-executor 8967 120919 23069 0 3 0x4000080 fsleep syz-executor 8967 244154 23069 0 3 0x4000080 fsleep syz-executor 73886 102396 89593 0 2 0xc80 syz-executor 73886 7035 89593 0 3 0x4000080 bell syz-executor 73886 90761 89593 0 3 0x4000080 fsleep syz-executor 4061 309022 43646 0 2 0xc80 syz-executor 4061 173199 43646 0 3 0x4000080 fsleep syz-executor 4061 294765 43646 0 3 0x4000080 ttyout syz-executor 4061 374777 43646 0 3 0x4000080 fsleep syz-executor 31470 52886 0 0 3 0x14280 nfsidl nfsio 67570 510854 0 0 3 0x14280 nfsidl nfsio 87361 208654 0 0 3 0x14280 nfsidl nfsio 49609 68477 0 0 3 0x14280 nfsidl nfsio 66491 395545 0 0 3 0x14280 nfsidl nfsio 28977 313308 0 0 3 0x14280 nfsidl nfsio 76898 262060 0 0 3 0x14280 nfsidl nfsio 97058 321415 0 0 3 0x14280 nfsidl nfsio 78812 379138 0 0 3 0x14280 nfsidl nfsio 46276 258185 0 0 3 0x14280 nfsidl nfsio 52187 191004 0 0 3 0x14280 nfsidl nfsio 38021 167758 0 0 3 0x14280 nfsidl nfsio 55218 211178 0 0 3 0x14280 nfsidl nfsio 11725 289002 0 0 3 0x14280 nfsidl nfsio 65660 299057 0 0 3 0x14280 nfsidl nfsio 89181 494774 0 0 3 0x14280 nfsidl nfsio 35134 72623 0 0 3 0x14280 nfsidl nfsio 4634 473987 0 0 3 0x14280 nfsidl nfsio 85160 16690 0 0 3 0x14280 nfsidl nfsio 32788 174486 0 0 3 0x14280 nfsidl nfsio 87494 292726 0 0 3 0x14200 acct acct 23069 389163 61960 0 3 0x82 nanoslp syz-executor 50398 58305 61960 0 2 0x2 syz-executor 77502 503369 61960 0 3 0x82 wait syz-executor 53760 493208 61960 0 2 0xc82 syz-executor 43646 68049 61960 0 2 0xc82 syz-executor 89593 39480 61960 0 3 0x82 nanoslp syz-executor 11221 212652 61960 0 3 0x82 nanoslp syz-executor 93792 514986 61960 0 3 0x82 nanoslp syz-executor 61960 104032 79781 0 3 0x82 kqread syz-executor 79781 24699 37128 0 3 0x10008a sigsusp ksh 37128 415423 61620 0 3 0x98 kqread sshd-session 61620 385 93141 0 3 0x92 kqread sshd-session 87745 498935 1 0 3 0x100083 ttyin getty 93141 340961 1 0 3 0x88 kqread sshd 1917 239792 69168 73 3 0x1100090 kqread syslogd 69168 12359 1 0 3 0x100082 sbwait syslogd 54373 410914 1 0 3 0x100080 kqread resolvd 28451 201288 3972 77 3 0x100092 kqread dhcpleased 57519 277240 3972 77 3 0x100092 kqread dhcpleased 3972 297082 1 0 3 0x80 kqread dhcpleased 94757 275770 0 0 3 0x14200 bored smr 90990 195170 0 0 2 0x14200 zerothread 34228 287901 0 0 3 0x14200 aiodoned aiodoned 19610 419128 0 0 3 0x14200 syncer update 26977 74874 0 0 3 0x14200 cleaner cleaner 47799 235804 0 0 3 0x14200 reaper reaper 32657 284114 0 0 3 0x14200 pgdaemon pagedaemon 65744 450768 0 0 3 0x14200 bored viomb 62462 380874 0 0 3 0x40014200 acpi0 acpi0 53260 112556 0 0 3 0x14200 bored softnet0 63427 223011 0 0 3 0x14200 smrbar systqmp 45686 169518 0 0 3 0x14200 bored systq 64609 184759 0 0 3 0x40014200 tmoslp softclock 77708 373510 0 0 3 0x40014200 idle0 1 400056 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 11041 12113K 12463K 166960K 12712 0 pcb 82 16K 16K 166960K 208 0 rtable 238 8K 8K 166960K 434 0 pf 32 13K 14K 166960K 68 0 ifaddr 44 7K 8K 166960K 68 0 ifgroup 52 2K 2K 166960K 96 0 sysctl 1 1K 9K 166960K 5 0 counters 35 18K 18K 166960K 55 0 ioctlops 0 0K 4K 166960K 103 0 iov 0 0K 28K 166960K 20 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1403 88K 89K 166960K 1757 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 14 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 20 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 236K 166960K 499 0 sigio 0 0K 0K 166960K 3 0 proc 60 59K 124K 166960K 513 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 48 0 in_multi 102 7K 7K 166960K 124 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 14 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 508 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 235 151K 165K 166960K 6021 0 UVM aobj 18 6K 8K 166960K 23 0 pinsyscall 38 76K 96K 166960K 1574 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 26 0 NDP 12 0K 2K 166960K 40 0 temp 48 8660K 8728K 166960K 13120 0 kqueue 15 24K 28K 166960K 77 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 62 0 59 1 0 1 1 0 8 0 rtentry 136 131 0 29 4 0 4 4 0 8 0 unpcb 144 321 0 302 4 3 1 4 0 8 0 syncache 336 5 0 5 1 1 0 1 0 8 0 tcpcb 736 257 0 252 7 6 1 7 0 8 0 arp 96 19 0 2 1 0 1 1 0 8 0 ipq 40 3 0 0 1 0 1 1 0 8 0 ipqe 40 3 0 0 1 0 1 1 0 8 0 inpcb 328 641 0 566 13 6 7 7 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 112 26 0 1 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1072 15 0 13 2 1 1 1 0 8 0 pppxif 1384 5 0 5 2 1 1 1 0 8 1 pfrule 1344 2 0 2 1 1 0 1 0 8 0 rttmr 136 4 0 4 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 601 0 150 31 2 29 31 0 8 0 art_table 40 603 0 150 5 0 5 5 0 8 0 art_node 32 131 0 37 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 14 0 4 1 0 1 1 0 8 0 shmpl 112 14 0 1 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 2246 0 744 95 0 95 95 0 8 0 ffsino 256 2246 0 744 95 0 95 95 0 8 0 nchpl 144 2927 0 1235 63 0 63 63 0 8 0 rtmask 32 3 0 2 1 0 1 1 0 8 0 vnodes 216 2589 0 0 144 0 144 144 0 8 0 namei 1024 9816 0 9816 3 2 1 2 0 8 1 vcpupl 3904 3 0 1 1 0 1 1 0 8 0 vmpool 808 6 0 4 1 0 1 1 0 8 0 kstatmem 264 48 0 24 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 10533 0 10532 10 7 3 8 1 8 2 plimitpl 152 79 0 60 1 0 1 1 0 8 0 sigapl 424 798 0 735 8 0 8 8 0 8 0 knotepl 120 17256 0 17127 15 6 9 9 0 8 5 kqueuepl 184 119 0 108 1 0 1 1 0 8 0 pipepl 304 137 0 110 3 0 3 3 0 8 0 fdescpl 448 764 0 735 5 1 4 5 0 8 0 filepl 120 4251 0 3965 11 2 9 10 0 8 0 lockfpl 104 124 0 122 1 0 1 1 0 8 0 lockfspl 48 50 0 48 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 32 0 16 1 0 1 1 0 8 0 ucredpl 104 448 0 437 1 0 1 1 0 8 0 zombiepl 144 737 0 735 1 0 1 1 0 8 0 processpl 1152 798 0 735 5 0 5 5 0 8 0 procpl 664 1345 0 1271 7 0 7 7 0 8 0 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 552 1037 0 940 13 5 8 8 0 8 1 mcl64k 65536 25 0 25 3 2 1 2 0 8 1 mcl9k 9216 2 0 2 1 1 0 1 0 8 0 mcl8k 8192 14 0 14 2 1 1 1 0 8 1 mcl4k 4096 2917 0 2867 16 8 8 15 0 8 1 mcl2k 2048 791 0 786 5 3 2 4 0 8 1 mtagpl 96 18 0 4 1 0 1 1 0 8 0 mbufpl 256 7681 0 7509 14 2 12 14 0 8 0 bufpl 280 3611 0 125 249 0 249 249 0 8 0 anonpl 24 130622 0 127093 53 21 32 45 0 187 7 amapchunkpl 152 18640 0 18141 33 7 26 28 0 158 5 amappl16 200 2419 0 2361 17 12 5 15 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 3 0 3 1 1 0 1 0 8 0 amappl13 176 413 0 412 1 0 1 1 0 8 0 amappl12 168 1122 0 1084 2 0 2 2 0 8 0 amappl11 160 8 0 8 1 1 0 1 0 8 0 amappl10 152 73 0 63 1 0 1 1 0 8 0 amappl9 144 250 0 249 1 0 1 1 0 8 0 amappl8 136 22 0 21 1 0 1 1 0 8 0 amappl7 128 81 0 80 1 0 1 1 0 8 0 amappl6 120 264 0 252 1 0 1 1 0 8 0 amappl5 112 75 0 67 1 0 1 1 0 8 0 amappl4 104 388 0 364 1 0 1 1 0 8 0 amappl3 96 3209 0 3115 3 0 3 3 0 8 0 amappl2 88 899 0 828 2 0 2 2 0 8 0 amappl1 80 10972 0 10435 13 0 13 13 0 8 0 amappl 88 5243 0 5076 5 0 5 5 0 92 0 uvmvnodes 80 105 0 0 3 0 3 3 0 8 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 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 254 0 254 1 1 0 1 0 8 0 dma64 64 7 0 7 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 22 0 5 1 0 1 1 0 8 0 uaddrrnd 24 764 0 735 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 764 0 735 1 0 1 1 0 8 0 vmmpekpl 168 7794 0 7762 2 0 2 2 0 8 0 vmmpepl 168 55856 0 54034 92 9 83 92 0 357 0 vmsppl 368 763 0 735 4 1 3 4 0 8 0 rwobjpl 40 17579 0 16582 13 1 12 13 0 8 0 pdppl 4096 1547 0 1480 104 35 69 83 0 8 2 pvpl 32 343561 0 334695 132 37 95 116 0 265 14 pmappl 216 769 0 739 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 396 0 68 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