kernel: protection fault trap, code=0 Stopped at done_flush+0x38: movl %eax,%dr6 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 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800037817820 rbp 0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xaaaaaaaaaaaa r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0 r11 0 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff826af1bb done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff800030f4b408 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor.0) tid=490892 pid=30940 tcnt=2 stat=onproc flags process=8000000 proc=4000000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a68bc58,0xffff80002a692a70 process=0xffff800030f4fab8 user=0xffff800030f46000, vmspace=0xfffffd8072749ad8 estcpu=34, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 47364 97527 3335 0 3 0x8000080 nanoslp syz-executor.4 47364 7112 3335 0 3 0xc000080 kqsel syz-executor.4 47364 81442 3335 0 3 0xc000080 fsleep syz-executor.4 30940 175743 54671 0 2 0x8000000 syz-executor.0 *30940 490892 54671 0 7 0xc000000 syz-executor.0 45806 89305 27819 0 3 0x8003000 suspend syz-executor.1 45806 423668 27819 0 3 0xc081000 biowait syz-executor.1 45806 391842 27819 0 3 0xc081000 inode syz-executor.1 47612 32773 56689 0 2 0x8000000 syz-executor.3 47612 323332 56689 0 3 0xc000080 kqread syz-executor.3 47612 447549 56689 0 3 0xc000080 fsleep syz-executor.3 35426 343399 15911 0 2 0x8000002 syz-executor.7 27819 464115 15911 0 3 0x8000082 nanoslp syz-executor.1 54671 118456 15911 0 3 0x8000082 nanoslp syz-executor.0 3335 232622 15911 0 3 0x8000082 nanoslp syz-executor.4 24322 358660 15911 0 3 0x8000002 biowait syz-executor.2 56689 477355 15911 0 3 0x8000082 nanoslp syz-executor.3 87344 207486 15911 0 3 0x8000002 biowait syz-executor.5 97810 290409 15911 0 3 0x8000082 nanoslp syz-executor.6 76602 351938 1 0 3 0x18100083 ttyin getty 27898 62645 0 0 3 0x14200 bored sosplice 10985 477193 0 0 3 0x14200 acct acct 15911 383405 3791 0 3 0x1a000082 thrsleep syz-fuzzer 15911 315707 3791 0 3 0x1e000082 nanoslp syz-fuzzer 15911 122751 3791 0 3 0x1e000082 wait syz-fuzzer 15911 151187 3791 0 3 0x1e000082 thrsleep syz-fuzzer 15911 391740 3791 0 3 0x1e000082 wait syz-fuzzer 15911 229141 3791 0 3 0x1e000082 wait syz-fuzzer 15911 2167 3791 0 3 0x1e000082 wait syz-fuzzer 15911 477125 3791 0 3 0x1e000082 kqread syz-fuzzer 15911 9968 3791 0 3 0x1e000082 wait syz-fuzzer 15911 341705 3791 0 3 0x1e000082 thrsleep syz-fuzzer 15911 324644 3791 0 3 0x1e000082 wait syz-fuzzer 15911 260585 3791 0 3 0x1e000082 wait syz-fuzzer 15911 478879 3791 0 3 0x1e000082 thrsleep syz-fuzzer 15911 50808 3791 0 3 0x1e000082 wait syz-fuzzer 3791 331376 75242 0 3 0x810008a sigsusp ksh 75242 247694 95921 0 3 0x1800009a kqread sshd 95921 307897 1 0 3 0x18000088 kqread sshd 26929 70343 23723 73 2 0x19100010 syslogd 23723 281349 1 0 3 0x18100082 sbwait syslogd 97717 22746 1 0 3 0x18100080 kqread resolvd 75048 26338 95914 77 3 0x18100092 kqread dhcpleased 81295 454882 95914 77 3 0x18100092 kqread dhcpleased 95914 160610 1 0 3 0x18000080 kqread dhcpleased 39215 126409 0 0 3 0x14200 bored smr 58866 516094 0 0 2 0x14200 zerothread 70903 190346 0 0 3 0x14200 aiodoned aiodoned 82092 278418 0 0 3 0x14200 syncer update 40367 91351 0 0 3 0x14200 cleaner cleaner 67173 262408 0 0 3 0x14200 reaper reaper 18732 20431 0 0 3 0x14200 pgdaemon pagedaemon 37117 101702 0 0 3 0x14200 bored viomb 28970 236867 0 0 3 0x40014200 acpi0 acpi0 71717 278 0 0 3 0x14200 bored softnet3 52882 123536 0 0 3 0x14200 bored softnet2 79539 238572 0 0 3 0x14200 bored softnet1 60172 453244 0 0 3 0x14200 bored softnet0 49417 446807 0 0 3 0x14200 bored systqmp 550 59958 0 0 3 0x14200 bored systq 6663 436819 0 0 3 0x40014200 tmoslp softclock 4301 522908 0 0 3 0x40014200 idle0 1 208036 0 0 3 0x8000082 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 10197 6482K 6967K 166960K 12960 0 pcb 17 12K 12K 166960K 133 0 rtable 215 6K 7K 166960K 1045 0 pf 27 8K 9K 166960K 92 0 ifaddr 39 11K 11K 166960K 140 0 ifgroup 46 2K 2K 166960K 173 0 sysctl 4 1K 1K 166960K 4 0 counters 29 17K 17K 166960K 58 0 ioctlops 0 0K 2K 166960K 83 0 iov 0 0K 16K 166960K 88 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1425 90K 90K 166960K 2351 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 18 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 84 0 dirhash 12 2K 3K 166960K 39 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 14 49K 93K 166960K 1090 0 sigio 0 0K 0K 166960K 10 0 proc 58 59K 116K 166960K 1110 0 subproc 104 6K 6K 166960K 377 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 142 0 in_multi 88 6K 7K 166960K 341 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 751 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 272 92K 111K 166960K 10697 0 UVM aobj 14 12K 12K 166960K 16 0 pinsyscall 34 68K 100K 166960K 2798 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 68 0 NDP 10 0K 2K 166960K 97 0 temp 75 6812K 6886K 166960K 26038 0 kqueue 13 20K 30K 166960K 129 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 120 149 0 146 1 0 1 1 0 8 0 rtentry 112 353 0 254 4 0 4 4 0 8 0 unpcb 144 676 0 663 6 0 6 6 0 8 5 syncache 336 8 0 8 1 0 1 1 0 8 1 tcpqe 32 13 0 13 1 0 1 1 0 8 1 tcpcb 808 303 0 298 7 0 7 7 0 8 6 arp 88 62 0 46 1 0 1 1 0 8 0 ipq 40 4 0 3 1 0 1 1 0 8 0 ipqe 40 99 0 98 1 0 1 1 0 8 0 inpcb 352 1102 0 1091 8 0 8 8 0 8 6 nd6 104 91 0 70 1 0 1 1 0 8 0 pkpcb 40 6 0 6 1 0 1 1 0 8 1 kcovpl 48 29 0 21 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1418 0 1006 36 7 29 30 0 8 2 art_table 32 1419 0 1006 4 0 4 4 0 8 0 art_node 16 349 0 259 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 11 1 0 1 1 0 8 0 semupl 112 4 0 4 1 0 1 1 0 8 1 semapl 112 77 0 67 1 0 1 1 0 8 0 shmpl 112 13 0 2 1 0 1 1 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 2862 0 1353 96 0 96 96 0 8 1 ffsino 240 2862 0 1353 90 0 90 90 0 8 0 nchpl 144 4292 0 2557 66 0 66 66 0 8 0 uvmvnodes 80 3709 0 0 76 0 76 76 0 8 0 vnodes 216 3709 0 0 207 0 207 207 0 8 0 namei 1024 16950 0 16948 2 0 2 2 0 8 1 vcpupl 3904 1 0 0 1 0 1 1 0 8 0 vmpool 664 4 0 3 1 0 1 1 0 8 0 kstatmem 264 78 0 58 2 0 2 2 0 8 0 scxspl 216 21137 0 21134 8 0 8 8 1 8 7 plimitpl 152 205 0 188 1 0 1 1 0 8 0 sigapl 424 1353 0 1309 7 0 7 7 0 8 0 futexpl 64 13992 0 13990 1 0 1 1 0 8 0 knotepl 120 5843 0 5758 11 0 11 11 0 8 7 kqueuepl 184 300 0 289 4 0 4 4 0 8 3 pipepl 288 302 0 273 3 0 3 3 0 8 0 fdescpl 432 1335 0 1310 5 0 5 5 0 8 1 filepl 120 8106 0 7860 14 0 14 14 0 8 6 lockfpl 104 205 0 203 1 0 1 1 0 8 0 lockfspl 48 98 0 96 1 0 1 1 0 8 0 sessionpl 144 45 0 29 1 0 1 1 0 8 0 pgrppl 48 124 0 108 1 0 1 1 0 8 0 ucredpl 104 1353 0 1342 1 0 1 1 0 8 0 zombiepl 144 1311 0 1309 1 0 1 1 0 8 0 processpl 1072 1353 0 1309 4 0 4 4 0 8 0 procpl 656 2201 0 2137 7 0 7 7 0 8 0 sosppl 168 10 0 10 1 0 1 1 0 8 1 sockpl 504 1938 0 1911 26 15 11 22 0 8 6 mcl64k 65536 39 0 39 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 29 0 29 1 0 1 1 0 8 1 mcl4k 4096 11 0 11 1 0 1 1 0 8 1 mcl2k 2048 21560 0 21457 45 24 21 39 0 8 6 mtagpl 96 28 0 25 1 0 1 1 0 8 0 mbufpl 256 44471 0 44266 27 7 20 23 0 8 5 bufpl 280 7203 0 874 453 0 453 453 0 8 0 anonpl 24 301964 0 295964 87 0 87 87 0 188 40 amapchunkpl 152 35189 0 34568 40 0 40 40 0 158 11 amappl16 200 6858 0 6727 32 16 16 20 0 8 8 amappl15 192 14 0 14 1 0 1 1 0 8 1 amappl14 184 238 0 227 2 0 2 2 0 8 1 amappl13 176 26 0 26 1 0 1 1 0 8 1 amappl12 168 2282 0 2257 2 0 2 2 0 8 0 amappl11 160 51 0 40 1 0 1 1 0 8 0 amappl10 152 66 0 57 1 0 1 1 0 8 0 amappl9 144 167 0 167 1 0 1 1 0 8 1 amappl8 136 210 0 180 2 0 2 2 0 8 0 amappl7 128 56 0 41 1 0 1 1 0 8 0 amappl6 120 595 0 581 2 0 2 2 0 8 1 amappl5 112 248 0 235 1 0 1 1 0 8 0 amappl4 104 668 0 637 2 0 2 2 0 8 1 amappl3 96 7118 0 7045 3 0 3 3 0 8 0 amappl2 88 1879 0 1808 4 0 4 4 0 8 2 amappl1 80 13848 0 13368 22 3 19 22 0 8 7 amappl 88 9959 0 9776 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 15 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1339 0 1313 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1339 0 1313 1 0 1 1 0 8 0 vmmpekpl 168 14223 0 14164 3 0 3 3 0 8 0 vmmpepl 168 106201 0 104466 114 0 114 114 0 357 29 vmsppl 344 1338 0 1313 4 0 4 4 0 8 0 rwobjpl 24 35549 0 30775 30 0 30 30 0 8 0 pdppl 4096 2684 0 2627 169 104 65 79 0 8 8 pvpl 32 736964 0 724865 385 36 349 385 0 265 229 pmappl 216 1338 0 1313 3 0 3 3 0 8 1 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 512 0 157 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