login: kernel: protection fault trap, code=0 Stopped at done_flush+0x38: movl %eax,%dr6 ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace end trace frame: 0x0, count: -1 ddb{1}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff80003727f840 rbp 0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xffffffffffffffff r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0 r11 0 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff811fd2cb done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80002a0e4118 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{1}> show proc PROC (syz-executor) tid=15711 pid=90416 tcnt=3 stat=onproc flags process=8000000 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a04f970,0xffff80002a1607e0 process=0xffff8000fffef1d8 user=0xffff80002a0df000, vmspace=0xfffffd8079fbb540 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 57712 442645 93372 0 2 0x8000000 syz-executor 57712 38966 93372 0 3 0xc000080 fsleep syz-executor 83360 325219 49227 0 7 0x8000010 syz-executor 83360 82703 49227 0 2 0xc000010 syz-executor 90416 165646 97159 0 2 0x8000000 syz-executor 90416 458991 97159 0 3 0xc000080 pipewr syz-executor *90416 15711 97159 0 7 0xc000000 syz-executor 73546 460370 27889 0 2 0x8000490 syz-executor 73546 493064 27889 0 3 0xc000090 ttyout syz-executor 73546 298430 27889 0 3 0xc000090 fsleep syz-executor 31638 43622 86989 0 2 0x8000480 syz-executor 31638 280803 86989 0 3 0xc000080 fsleep syz-executor 31638 290254 86989 0 3 0xc000080 ttyout syz-executor 35179 482913 51895 60928 2 0x8000490 syz-executor 35179 90951 51895 60928 3 0xc000090 kqpoll syz-executor 35179 270866 51895 60928 3 0xc000090 fsleep syz-executor 84 160391 0 0 3 0x14200 acct acct 94726 155050 1 0 3 0x18100083 ttyin getty 86989 434322 62192 0 3 0x8000082 nanoslp syz-executor 97159 56617 62192 0 3 0x8000082 nanoslp syz-executor 96872 143612 62192 0 2 0x8000002 syz-executor 51895 340565 62192 0 2 0x8000482 syz-executor 93372 16826 62192 0 3 0x8000082 nanoslp syz-executor 27889 370611 62192 0 3 0x8000082 nanoslp syz-executor 81097 518114 62192 0 2 0x8000482 syz-executor 49227 274805 62192 0 3 0x8000082 nanoslp syz-executor 11243 465986 0 0 3 0x14200 bored sosplice 62192 233423 99681 0 3 0x8000082 kqread syz-executor 99681 231941 8695 0 3 0x810008a sigsusp ksh 8695 410733 48708 0 3 0x18000098 kqread sshd-session 48708 184898 19619 0 3 0x18000092 kqread sshd-session 19619 739 1 0 3 0x18000088 kqread sshd 90925 343561 97727 74 3 0x19100092 bpf pflogd 97727 451687 1 0 3 0x18000080 sbwait pflogd 50593 497019 7205 73 2 0x19100090 syslogd 7205 347332 1 0 3 0x18100082 sbwait syslogd 59291 227920 1 0 3 0x18100080 kqread resolvd 27773 406732 30212 77 3 0x18100092 kqread dhcpleased 99027 68045 30212 77 3 0x18100092 kqread dhcpleased 30212 166302 1 0 3 0x18000080 kqread dhcpleased 45881 431778 0 0 3 0x14200 bored smr 76741 147404 0 0 2 0x14200 zerothread 13903 172310 0 0 3 0x14200 aiodoned aiodoned 64104 60925 0 0 3 0x14200 syncer update 60956 201680 0 0 3 0x14200 cleaner cleaner 42529 147158 0 0 3 0x14200 reaper reaper 53490 171012 0 0 3 0x14200 pgdaemon pagedaemon 33252 41046 0 0 3 0x14200 bored viomb 96281 506674 0 0 3 0x40014200 acpi0 acpi0 19144 53773 0 0 3 0x40014200 idle1 45115 275212 0 0 3 0x14200 bored softnet3 75839 140974 0 0 3 0x14200 bored softnet2 36420 215626 0 0 3 0x14200 bored softnet1 17203 401807 0 0 2 0x14200 softnet0 89526 487040 0 0 3 0x14200 bored systqmp 25372 400177 0 0 3 0x14200 bored systq 79183 31446 0 0 3 0x14200 tmoslp softclockmp 11644 247040 0 0 3 0x40014200 tmoslp softclock 93183 163163 0 0 3 0x40014200 idle0 1 277103 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 90416 (syz-executor) thread 0xffff80002a160f68 (15711) Process 96872 (syz-executor) thread 0xffff80002a04ecc8 (143612) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10352 10373K 10687K 166960K 13548 0 pcb 18 15K 17K 166960K 307 0 rtable 193 6K 7K 166960K 1804 0 pf 31 17K 21K 166960K 174 0 ifaddr 34 6K 8K 166960K 245 0 ifgroup 47 2K 2K 166960K 285 0 sysctl 2 0K 0K 166960K 4 0 counters 60 35K 36K 166960K 180 0 ioctlops 0 0K 4K 166960K 1745 0 iov 0 0K 16K 166960K 68 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1450 91K 91K 166960K 3101 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 10K 10K 166960K 18 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 77 0 dirhash 12 2K 3K 166960K 39 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 85K 166960K 1597 0 sigio 0 0K 0K 166960K 25 0 proc 70 91K 128K 166960K 1858 0 subproc 104 6K 6K 166960K 689 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 236 0 in_multi 76 5K 7K 166960K 618 0 ether_multi 1 0K 0K 166960K 7 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 1254 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 253 81K 107K 166960K 14224 0 UVM aobj 93 7K 7K 166960K 94 0 pinsyscall 42 84K 99K 166960K 3847 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 61 0 NDP 10 0K 1K 166960K 176 0 temp 79 6820K 6885K 166960K 41178 0 kqueue 13 20K 28K 166960K 169 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 244 0 241 2 1 1 2 0 8 0 rtentry 112 637 0 549 5 1 4 4 0 8 0 unpcb 144 790 0 769 7 6 1 4 0 8 0 syncache 336 5 0 5 2 2 0 1 0 8 0 tcpcb 808 470 0 466 16 14 2 8 0 8 1 arp 120 111 0 97 1 0 1 1 0 8 0 inpcb 336 1899 0 1889 28 21 7 15 0 8 5 nd6 136 176 0 156 2 1 1 2 0 8 0 pkpcb 40 5 0 5 3 3 0 1 0 8 0 kcovpl 48 53 0 45 1 0 1 1 0 8 0 ppxss 1168 5 0 5 2 2 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 6 0 1 1 0 1 1 0 482 0 pffrnode 88 6 0 1 1 0 1 1 0 8 0 pffrent 40 9 0 4 2 1 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 118 0 62 1 0 1 1 0 8 0 pfstkey 128 120 0 64 2 0 2 2 0 8 0 pfstate 376 119 0 63 6 0 6 6 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 2489 0 2114 38 9 29 30 0 8 1 art_table 32 2491 0 2114 4 0 4 4 0 8 0 art_node 16 632 0 552 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 75 0 65 1 0 1 1 0 8 0 shmpl 112 91 0 1 3 0 3 3 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 3364 0 1770 101 0 101 101 0 8 0 ffsino 272 3364 0 1770 107 0 107 107 0 8 0 nchpl 144 4881 0 3133 66 0 66 66 0 8 0 uvmvnodes 80 4802 0 0 98 0 98 98 0 8 0 vnodes 216 4802 0 0 267 0 267 267 0 8 0 namei 1024 22800 0 22799 3 2 1 1 0 8 0 percpumem 16 104 0 60 1 0 1 1 0 8 0 vcpupl 3904 5 0 1 1 0 1 1 0 8 0 vmpool 696 7 0 3 2 1 1 1 0 8 0 kstatmem 264 140 0 120 2 0 2 2 0 8 0 scxspl 216 36412 0 36412 16 14 2 8 1 8 2 plimitpl 152 379 0 360 1 0 1 1 0 8 0 sigapl 424 1832 0 1781 9 0 9 9 0 8 2 futexpl 64 15823 0 15819 6 5 1 1 0 8 0 knotepl 120 566 0 0 18 1 17 17 0 8 0 kqueuepl 216 527 0 516 11 6 5 5 0 8 4 pipepl 320 381 0 353 6 0 6 6 0 8 3 fdescpl 496 1790 0 1759 7 2 5 5 0 8 0 filepl 152 12210 0 11939 33 17 16 18 0 8 3 lockfpl 104 529 0 527 2 1 1 2 0 8 0 lockfspl 48 173 0 171 1 0 1 1 0 8 0 sessionpl 144 69 0 60 1 0 1 1 0 8 0 pgrppl 48 140 0 123 1 0 1 1 0 8 0 ucredpl 104 1956 0 1937 1 0 1 1 0 8 0 zombiepl 144 1782 0 1781 1 0 1 1 0 8 0 processpl 1160 1832 0 1781 6 0 6 6 0 8 2 procpl 648 3349 0 3288 9 1 8 9 0 8 1 srpgc 96 6 0 6 2 1 1 1 0 8 1 sosppl 168 5 0 5 4 3 1 1 0 8 1 sockpl 664 2949 0 2915 34 25 9 17 0 8 5 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 235 0 0 29 0 29 29 0 8 0 mtagpl 96 35 0 0 1 0 1 1 0 8 0 mbufpl 256 698 0 0 41 0 41 41 0 8 0 bufpl 280 8946 0 1947 501 0 501 501 0 8 0 anonpl 24 278881 0 275271 63 9 54 54 0 185 24 amapchunkpl 152 44928 0 44392 46 13 33 41 0 158 10 amappl16 200 5209 0 5182 30 20 10 15 0 8 8 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 210 0 197 1 0 1 1 0 8 0 amappl13 176 15 0 14 1 0 1 1 0 8 0 amappl12 168 3156 0 3125 3 1 2 2 0 8 0 amappl11 160 124 0 110 1 0 1 1 0 8 0 amappl10 152 11 0 10 1 0 1 1 0 8 0 amappl9 144 137 0 137 1 1 0 1 0 8 0 amappl8 136 23 0 21 1 0 1 1 0 8 0 amappl7 128 204 0 192 1 0 1 1 0 8 0 amappl6 120 614 0 612 1 0 1 1 0 8 0 amappl5 112 333 0 321 1 0 1 1 0 8 0 amappl4 104 451 0 431 1 0 1 1 0 8 0 amappl3 96 8881 0 8757 4 0 4 4 0 8 0 amappl2 88 1255 0 1191 2 0 2 2 0 8 0 amappl1 80 14881 0 14286 15 1 14 14 0 8 0 amappl 88 13456 0 13270 6 1 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 93 0 1 2 0 2 2 0 8 0 uaddrrnd 24 1797 0 1762 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1797 0 1762 1 0 1 1 0 8 0 vmmpekpl 168 16965 0 16913 4 0 4 4 0 8 1 vmmpepl 168 115412 0 113480 111 14 97 97 0 357 10 vmsppl 440 1796 0 1762 8 3 5 5 0 8 0 rwobjpl 56 39269 0 33400 83 0 83 83 0 8 0 pdppl 4096 3601 0 3528 175 100 75 81 0 8 2 pvpl 32 30299 0 0 244 1 243 243 0 265 0 pmappl 248 1796 0 1762 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 554 0 152 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8349fff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x726c1ced4b30, count: -3 ddb{0}> machine ddbcpu 1 Stopped at done_flush+0x38: movl %eax,%dr6 ddb{1}> trace end trace frame: 0x0, count: -1