kernel: protection fault trap, code=0 Stopped at done_flush+0x38: movl %eax,%dr6 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace end trace frame: 0x0, count: -1 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff8000fffe9d18 rbp 0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0x100000001 r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0 r11 0 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff81f1820b done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80003c40d708 ss 0 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor) tid=368464 pid=28488 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=84, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a2542b0,0xffff80002a2547f0 process=0xffff80003c49d840 user=0xffff80003c408000, vmspace=0xfffffd806ab983e8 estcpu=34, cpticks=1, pctcpu=0.0, user=0, sys=0, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 62961 366853 38195 60929 2 0x10 syz-executor 62961 82632 38195 60929 3 0x4000090 fsleep syz-executor 10393 285985 86842 0 2 0x101004 sh 86842 138870 80872 0 3 0x10008a sigsusp sh 40300 38015 18374 0 2 0 syz-executor 40300 489672 18374 0 3 0x4000080 kqsel syz-executor 40300 148196 18374 0 2 0x4000000 syz-executor 55872 50608 58763 0 3 0x3000 suspend syz-executor 55872 69261 58763 0 2 0x4081000 syz-executor 55872 411431 58763 0 2 0x4081c00 syz-executor 55872 291420 58763 0 3 0x4081000 pipecl syz-executor 28488 456835 10180 0 2 0 syz-executor 28488 496489 10180 0 3 0x4000080 kqread syz-executor 28488 29179 10180 0 3 0x4000080 bell syz-executor *28488 368464 10180 0 7 0x4000000 syz-executor 61987 433231 76406 0 2 0 syz-executor 61987 24933 76406 0 2 0x4000001 syz-executor 61987 491399 76406 0 3 0x4000080 fsleep syz-executor 80872 76695 7181 0 3 0x82 wait syz-executor 86798 497566 7181 0 2 0x2 syz-executor 79575 79883 1 0 3 0x100083 ttyopn getty 91198 227252 7181 0 2 0x2 syz-executor 76406 340618 7181 0 2 0xc82 syz-executor 18374 5272 7181 0 2 0xc82 syz-executor 38195 514023 7181 0 2 0xc82 syz-executor 10180 59525 7181 0 2 0xc82 syz-executor 58763 511568 7181 0 2 0xc82 syz-executor 7181 440342 97358 0 3 0x82 kqread syz-executor 97358 181743 14058 0 3 0x10008a sigsusp ksh 14058 138646 93313 0 3 0x98 kqread sshd-session 93313 514714 73777 0 3 0x92 kqread sshd-session 73777 272605 1 0 3 0x88 kqread sshd 96321 416722 74820 74 3 0x1100092 bpf pflogd 74820 375707 1 0 3 0x80 sbwait pflogd 31547 87415 69371 73 3 0x1100090 kqread syslogd 69371 120655 1 0 3 0x100082 sbwait syslogd 72483 143936 1 0 3 0x100080 kqread resolvd 15004 326913 34294 77 3 0x100092 kqread dhcpleased 77457 31591 34294 77 3 0x100092 kqread dhcpleased 34294 456730 1 0 3 0x80 kqread dhcpleased 15307 113366 0 0 3 0x14200 bored smr 50345 356907 0 0 2 0x14200 zerothread 52950 487837 0 0 3 0x14200 aiodoned aiodoned 77617 418817 0 0 3 0x14200 syncer update 90911 302874 0 0 3 0x14200 cleaner cleaner 40751 402060 0 0 3 0x14200 reaper reaper 33509 127740 0 0 3 0x14200 pgdaemon pagedaemon 42057 497797 0 0 3 0x14200 bored viomb 24116 308126 0 0 3 0x40014200 acpi0 acpi0 97796 49738 0 0 7 0x40014200 idle1 42823 277053 0 0 3 0x14200 bored softnet1 64265 119082 0 0 2 0x14200 softnet0 27259 47914 0 0 3 0x14200 bored systqmp 52897 47930 0 0 3 0x14200 bored systq 25549 313776 0 0 3 0x14200 tmoslp softclockmp 91142 503110 0 0 3 0x40014200 tmoslp softclock 80642 47237 0 0 3 0x40014200 idle0 1 449092 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 40300 (syz-executor) thread 0xffff80002a254a78 (38015) Process 55872 (syz-executor) thread 0xffff80002a2542b0 (69261) Process 28488 (syz-executor) thread 0xffff80002a254fa8 (368464) Process 86798 (syz-executor) thread 0xffff80003c3de7f0 (497566) Process 91198 (syz-executor) thread 0xffff80003c427790 (227252) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11109 12128K 12354K 166960K 14033 0 pcb 18 16K 32K 166960K 387 0 rtable 170 10K 11K 166960K 617 0 pf 34 17K 82K 166960K 200 0 ifaddr 31 5K 9K 166960K 142 0 ifgroup 55 2K 2K 166960K 264 0 sysctl 4 1K 9K 166960K 14 0 counters 70 37K 38K 166960K 400 0 ioctlops 0 0K 4K 166960K 1977 0 iov 0 0K 16K 166960K 116 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1347 85K 85K 166960K 2917 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 60 0 dirhash 12 2K 2K 166960K 42 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 1728 0 sigio 0 0K 0K 166960K 32 0 proc 73 115K 164K 166960K 823 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 450 0 in_multi 54 3K 7K 166960K 184 0 ether_multi 1 0K 0K 166960K 12 0 mrt 1 0K 0K 166960K 34 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 1 0K 1K 166960K 1091 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 236 160K 179K 166960K 18717 0 UVM aobj 66 82K 82K 166960K 70 0 pinsyscall 44 88K 102K 166960K 3034 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 149 0 NDP 12 0K 2K 166960K 101 0 temp 80 9088K 9330K 166960K 67501 0 kqueue 14 22K 32K 166960K 375 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 425 0 422 8 7 1 3 0 8 0 rtentry 176 178 0 122 6 0 6 6 0 8 0 unpcb 144 1798 0 1779 18 17 1 6 0 8 0 syncache 336 15 0 15 5 5 0 1 0 8 0 tcpqe 32 10 0 10 6 6 0 1 0 8 0 tcpcb 736 797 0 789 26 24 2 13 0 8 0 arp 136 28 0 18 1 0 1 1 0 8 0 inpcb 328 2531 0 2517 46 41 5 18 0 8 3 nd6 152 36 0 22 2 0 2 2 0 8 0 pkpcb 40 11 0 11 4 4 0 1 0 8 0 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1192 137 0 137 4 3 1 1 0 8 1 pppxif 1576 12 0 12 4 4 0 1 0 8 0 pffrag 232 22 0 10 1 0 1 1 0 482 0 pffrnode 88 20 0 9 1 0 1 1 0 8 0 pffrent 40 31 0 19 1 0 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 91 0 61 1 0 1 1 0 8 0 pfstkey 128 91 0 61 2 0 2 2 0 8 0 pfstate 448 91 0 61 5 1 4 5 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 rttmr 136 3 0 3 2 1 1 1 0 8 1 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 757 0 502 32 11 21 30 0 8 0 art_table 40 762 0 502 5 0 5 5 0 8 0 art_node 32 178 0 131 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 3 2 1 1 1 0 8 0 semupl 112 3 0 3 3 3 0 1 0 8 0 semapl 112 57 0 47 1 0 1 1 0 8 0 shmpl 112 30 0 4 1 0 1 1 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 5131 0 3676 93 0 93 93 0 8 0 ffsino 296 5131 0 3676 114 0 114 114 0 8 0 nchpl 144 7605 0 5893 64 0 64 64 0 8 0 rtmask 32 12 0 12 5 5 0 1 0 8 0 vnodes 216 5744 0 0 320 0 320 320 0 8 0 namei 1024 28541 0 28539 7 6 1 5 0 8 0 percpumem 16 215 0 165 1 0 1 1 0 8 0 vcpupl 3968 37 0 0 5 0 5 5 0 8 0 vmpool 848 37 0 0 5 0 5 5 0 8 0 kstatmem 264 164 0 136 6 3 3 3 0 8 0 scsiplug 72 5 0 5 4 3 1 1 0 8 1 scxspl 216 29860 0 29860 13 11 2 8 1 8 2 plimitpl 152 367 0 348 1 0 1 1 0 8 0 sigapl 424 2067 0 2019 9 2 7 8 0 8 0 knotepl 120 565 0 0 16 0 16 16 0 8 0 kqueuepl 224 738 0 726 13 12 1 6 0 8 0 pipepl 344 344 0 316 9 6 3 6 0 8 0 fdescpl 528 2029 0 1997 3 0 3 3 0 8 0 filepl 160 16505 0 16275 40 26 14 21 0 8 0 lockfpl 104 966 0 963 3 2 1 2 0 8 0 lockfspl 48 315 0 312 1 0 1 1 0 8 0 sessionpl 144 38 0 29 1 0 1 1 0 8 0 pgrppl 48 75 0 58 1 0 1 1 0 8 0 ucredpl 104 2820 0 2806 1 0 1 1 0 8 0 zombiepl 144 3125 0 3124 1 0 1 1 0 8 0 processpl 1232 2067 0 2019 7 3 4 6 0 8 0 procpl 664 4941 0 4881 9 3 6 9 0 8 0 sosppl 176 12 0 12 5 5 0 1 0 8 0 sockpl 752 4876 0 4839 54 45 9 23 0 8 4 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 117 0 0 15 0 15 15 0 8 0 mcl2k 2048 44 0 0 5 0 5 5 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 269 0 0 14 0 14 14 0 8 0 bufpl 280 9846 0 3717 440 1 439 439 0 8 0 anonpl 32 9369 0 0 75 0 75 75 0 246 0 amapchunkpl 152 61880 0 61404 61 33 28 30 0 158 6 amappl16 200 5191 0 5139 33 27 6 18 0 8 0 amappl15 192 9 0 8 1 0 1 1 0 8 0 amappl14 184 478 0 476 1 0 1 1 0 8 0 amappl13 176 196 0 184 1 0 1 1 0 8 0 amappl12 168 2299 0 2269 2 0 2 2 0 8 0 amappl11 160 9 0 9 1 1 0 1 0 8 0 amappl10 152 78 0 64 1 0 1 1 0 8 0 amappl9 144 272 0 272 1 1 0 1 0 8 0 amappl8 136 141 0 139 1 0 1 1 0 8 0 amappl7 128 177 0 164 1 0 1 1 0 8 0 amappl6 120 185 0 181 1 0 1 1 0 8 0 amappl5 112 122 0 110 1 0 1 1 0 8 0 amappl4 104 358 0 338 1 0 1 1 0 8 0 amappl3 96 12605 0 12492 4 0 4 4 0 8 0 amappl2 88 713 0 649 2 0 2 2 0 8 0 amappl1 80 21301 0 20694 25 10 15 17 0 8 0 amappl 88 17541 0 17378 5 0 5 5 0 92 0 uvmvnodes 80 157 0 0 4 0 4 4 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 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 254 0 254 2 2 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 69 0 4 2 0 2 2 0 8 0 uaddrrnd 24 2028 0 1997 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2028 0 1997 1 0 1 1 0 8 0 vmmpekpl 168 19978 0 19930 4 1 3 3 0 8 0 vmmpepl 168 140690 0 138785 117 28 89 100 0 357 0 vmsppl 488 2028 0 1997 7 2 5 5 0 8 0 rwobjpl 80 40108 0 38907 31 1 30 30 0 8 0 pdppl 4096 4139 0 4031 163 53 110 112 0 8 2 pvpl 32 16028 0 0 129 0 129 129 0 265 0 pmappl 256 2065 0 1997 5 0 5 5 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 389 0 106 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace end trace frame: 0x0, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299adff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299adff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5