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 0xffff80003c412c98 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 0xffffffff8142f92b done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80003e875c18 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{1}> show proc PROC (syz-executor) tid=73037 pid=87716 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003a7cfa18,0xffff8000fffe3cd0 process=0xffff8000fffdab78 user=0xffff80003e871000, vmspace=0xfffffd806f586b78 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 7392 319644 91009 0 7 0 syz-executor 7392 343882 91009 0 2 0x4000000 syz-executor 79968 187298 91250 0 2 0 syz-executor 51780 106130 48084 0 2 0 syz-executor 51780 237443 48084 0 3 0x4000080 fsleep syz-executor 51780 519288 48084 0 3 0x4000080 fsleep syz-executor 47269 297842 16585 -1 2 0x10 syz-executor 47269 342222 16585 -1 3 0x4000090 kqread syz-executor 47269 201114 16585 -1 3 0x4000090 kqsel syz-executor 47269 238505 16585 -1 3 0x4000090 kqpoll syz-executor 87716 416643 58359 0 2 0 syz-executor *87716 73037 58359 0 7 0x4000000 syz-executor 87716 349761 58359 0 3 0x4000080 fsleep syz-executor 78387 15815 38263 0 2 0x1 syz-executor 78387 467174 38263 0 3 0x4000080 fsleep syz-executor 14268 67796 87290 0 2 0 syz-executor 14268 484499 87290 0 3 0x4000080 fsleep syz-executor 44844 470025 11812 0 3 0x3000 suspend syz-executor 44844 204854 11812 0 2 0x4081000 syz-executor 44844 198737 11812 0 3 0x4081000 fltagain2 syz-executor 44844 445417 11812 0 3 0x4081000 fltagain2 syz-executor 44844 139419 11812 0 3 0x4081000 pipecl syz-executor 74539 47262 0 0 3 0x14200 acct acct 27075 438697 57106 27 3 0x1100092 kqread sshd-auth 57106 255967 10306 0 3 0x82 kqread sshd-session 11812 168226 87984 0 3 0x82 wait syz-executor 91250 229788 87984 0 2 0xc82 syz-executor 48084 68655 87984 0 2 0xc82 syz-executor 87290 382014 87984 0 2 0xc82 syz-executor 7334 235290 1 0 3 0x100083 ttyopn getty 58359 62447 87984 0 2 0xc82 syz-executor 38263 452961 87984 0 2 0xc82 syz-executor 18369 74613 79357 0 3 0x100082 sbwait ndp 79357 380776 1 0 3 0x10008a sigsusp sh 16585 495716 87984 0 2 0xc82 syz-executor 91009 105109 87984 0 3 0x82 nanoslp syz-executor 87984 220526 1834 0 3 0x82 kqread syz-executor 1834 292612 79320 0 3 0x10008a sigsusp ksh 79320 292979 22808 0 3 0x98 kqread sshd-session 22808 158986 10306 0 3 0x92 kqread sshd-session 10306 26156 1 0 3 0x88 kqread sshd 40482 106436 50309 74 3 0x1100092 bpf pflogd 50309 169371 1 0 3 0x80 sbwait pflogd 90663 483560 80412 73 3 0x1100090 kqread syslogd 80412 64376 1 0 3 0x100082 sbwait syslogd 36270 247756 1 0 3 0x100080 kqread resolvd 45031 304151 74329 77 3 0x100092 kqread dhcpleased 19617 33636 74329 77 3 0x100092 kqread dhcpleased 74329 455046 1 0 3 0x80 kqread dhcpleased 1474 466166 0 0 3 0x14200 bored smr 340 474888 0 0 2 0x14200 zerothread 28277 389582 0 0 3 0x14200 aiodoned aiodoned 87543 169452 0 0 3 0x14200 syncer update 49718 309823 0 0 3 0x14200 cleaner cleaner 65464 99317 0 0 3 0x14200 reaper reaper 94891 289010 0 0 3 0x14200 pgdaemon pagedaemon 13822 125501 0 0 3 0x14200 bored viomb 73878 239452 0 0 3 0x40014200 acpi0 acpi0 77000 60090 0 0 3 0x40014200 idle1 84785 114106 0 0 3 0x14200 bored softnet1 38609 298471 0 0 3 0x14200 bored softnet0 80675 18815 0 0 3 0x14200 bored systqmp 42787 365752 0 0 3 0x14200 bored systq 72725 482821 0 0 3 0x14200 tmoslp softclockmp 13679 146645 0 0 3 0x40014200 tmoslp softclock 15801 175360 0 0 3 0x40014200 idle0 1 390334 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 87716 (syz-executor) thread 0xffff8000fffe3260 (73037) Process 44844 (syz-executor) thread 0xffff8000fffe8550 (204854) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11108 12165K 14976K 166960K 15627 0 pcb 19 16K 18K 166960K 625 0 rtable 206 12K 13K 166960K 1021 0 pf 33 17K 22K 166960K 226 0 ifaddr 34 6K 8K 166960K 166 0 ifgroup 52 2K 2K 166960K 292 0 sysctl 4 1K 9K 166960K 223 0 counters 70 37K 38K 166960K 584 0 ioctlops 0 0K 4K 166960K 2139 0 iov 0 0K 24K 166960K 145 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1487 93K 94K 166960K 3290 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 29 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 124 0 dirhash 12 2K 2K 166960K 45 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 20 73K 244K 166960K 1949 0 sigio 0 0K 0K 166960K 37 0 proc 73 115K 180K 166960K 896 0 subproc 81 5K 5K 166960K 126 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 357 0 in_multi 64 4K 7K 166960K 225 0 ether_multi 1 0K 0K 166960K 13 0 mrt 1 0K 0K 166960K 51 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 738 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 279 171K 189K 166960K 19652 0 UVM aobj 110 19K 19K 166960K 118 0 pinsyscall 50 100K 106K 166960K 3320 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 221 0 NDP 12 0K 1K 166960K 122 0 temp 85 9084K 9151K 166960K 88795 0 kqueue 16 26K 38K 166960K 380 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 178 0 173 1 0 1 1 0 8 0 rtentry 176 368 0 292 6 1 5 6 0 8 0 unpcb 144 1200 0 1175 8 6 2 4 0 8 1 syncache 336 13 0 13 5 5 0 1 0 8 0 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 736 571 0 562 11 9 2 7 0 8 1 arp 136 39 0 25 1 0 1 1 0 8 0 inpcb 328 2433 0 2417 24 17 7 12 0 8 5 nd6 152 51 0 32 2 0 2 2 0 8 0 pkpcb 40 14 0 14 5 4 1 1 0 8 1 kcovpl 48 14 0 5 1 0 1 1 0 8 0 ppxss 1192 226 0 226 2 1 1 1 0 8 1 pppxif 1576 79 0 79 3 3 0 1 0 8 0 pffrag 232 58 0 52 1 0 1 1 0 482 0 pffrnode 88 38 0 32 1 0 1 1 0 8 0 pffrent 40 197 0 191 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 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pfstitem 24 155 0 78 1 0 1 1 0 8 0 pfstkey 128 155 0 78 3 0 3 3 0 8 0 pfstate 448 155 0 78 11 0 11 11 0 8 0 pfrule 1360 24 0 17 2 1 1 2 0 8 0 rttmr 136 6 0 6 4 4 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1247 0 924 49 22 27 39 0 8 2 art_table 40 1249 0 924 7 1 6 7 0 8 0 art_node 32 366 0 297 2 0 2 2 0 8 0 sysvmsgpl 40 40 0 0 1 0 1 1 0 8 0 semapl 112 120 0 110 1 0 1 1 0 8 0 shmpl 112 107 0 8 3 0 3 3 0 8 0 dirhash 1024 39 0 22 3 0 3 3 0 8 0 dino2pl 256 5180 0 3704 93 0 93 93 0 8 0 ffsino 296 5180 0 3704 114 0 114 114 0 8 0 nchpl 144 7778 0 6058 64 0 64 64 0 8 0 rtmask 32 17 0 17 4 3 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 27286 0 27286 6 5 1 4 0 8 1 percpumem 16 307 0 257 1 0 1 1 0 8 0 vcpupl 3968 8 0 0 1 0 1 1 0 8 0 vmpool 848 8 0 0 1 0 1 1 0 8 0 kstatmem 264 188 0 160 3 0 3 3 0 8 0 acpiwqpl 32 3 0 3 1 0 1 1 1 8 1 scsiplug 72 7 0 7 6 5 1 1 0 8 1 scxspl 216 42462 0 42462 14 12 2 8 1 8 2 plimitpl 152 466 0 445 1 0 1 1 0 8 0 sigapl 424 2267 0 2214 10 3 7 9 0 8 0 knotepl 120 708 0 0 22 0 22 22 0 8 0 kqueuepl 224 787 0 770 13 8 5 5 0 8 4 pipepl 344 345 0 313 11 7 4 9 0 8 0 fdescpl 528 2228 0 2192 3 0 3 3 0 8 0 filepl 160 15037 0 14777 30 12 18 19 0 8 5 lockfpl 104 883 0 881 2 0 2 2 0 8 1 lockfspl 48 378 0 376 1 0 1 1 0 8 0 sessionpl 144 39 0 29 1 0 1 1 0 8 0 pgrppl 48 87 0 68 1 0 1 1 0 8 0 ucredpl 104 2570 0 2555 1 0 1 1 0 8 0 zombiepl 144 3015 0 3014 2 1 1 1 0 8 0 processpl 1232 2267 0 2214 6 0 6 6 0 8 0 procpl 664 5383 0 5316 8 1 7 8 0 8 0 sosppl 176 10 0 9 5 4 1 1 0 8 0 sockpl 752 3933 0 3886 38 27 11 18 0 8 6 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 126 0 0 16 0 16 16 0 8 0 mcl2k 2048 84 0 0 9 0 9 9 0 8 0 mtagpl 96 56 0 0 2 0 2 2 0 8 0 mbufpl 256 1164 0 0 73 0 73 73 0 8 0 bufpl 280 15713 0 9583 439 0 439 439 0 8 0 anonpl 32 10860 0 0 88 0 88 88 0 246 0 amapchunkpl 152 67953 0 67343 60 30 30 37 0 158 1 amappl16 200 7232 0 6977 70 56 14 25 0 8 0 amappl15 192 35 0 35 1 1 0 1 0 8 0 amappl14 184 505 0 502 1 0 1 1 0 8 0 amappl13 176 162 0 147 1 0 1 1 0 8 0 amappl12 168 2526 0 2490 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 67 0 51 1 0 1 1 0 8 0 amappl9 144 290 0 290 1 1 0 1 0 8 0 amappl8 136 121 0 118 1 0 1 1 0 8 0 amappl7 128 179 0 163 1 0 1 1 0 8 0 amappl6 120 223 0 221 1 0 1 1 0 8 0 amappl5 112 129 0 116 1 0 1 1 0 8 0 amappl4 104 365 0 341 1 0 1 1 0 8 0 amappl3 96 13730 0 13603 4 0 4 4 0 8 0 amappl2 88 727 0 652 2 0 2 2 0 8 0 amappl1 80 22018 0 21203 17 0 17 17 0 8 0 amappl 88 18423 0 18233 5 0 5 5 0 92 0 uvmvnodes 80 169 0 0 4 0 4 4 0 8 0 dma32768 32768 2 0 2 2 2 0 1 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 9 0 9 3 3 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 8 0 8 3 3 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 72 117 0 8 2 0 2 2 0 8 0 uaddrrnd 24 2228 0 2192 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2228 0 2192 1 0 1 1 0 8 0 vmmpekpl 168 19300 0 19243 3 0 3 3 0 8 0 vmmpepl 168 152789 0 150215 142 29 113 114 0 357 0 vmsppl 488 2227 0 2192 5 0 5 5 0 8 0 rwobjpl 80 43852 0 42137 39 3 36 36 0 8 1 pdppl 4096 4479 0 4392 135 48 87 88 0 8 0 pvpl 32 19001 0 0 154 1 153 154 0 265 0 pmappl 256 2235 0 2192 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 429 0 97 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8391cff0) 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 end of kernel end trace frame: 0x789827021350, count: -3 ddb{0}> machine ddbcpu 1 Stopped at done_flush+0x38: movl %eax,%dr6 ddb{1}> trace end trace frame: 0x0, count: -1