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 0xffff8000343e3630 rbp 0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xfffffffffffffffc r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0 r11 0 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff810a48dd done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80003768aa26 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb> show proc PROC (syz-executor.0) tid=312304 pid=74781 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a642d60,0xffff80002a643568 process=0xffff800037641940 user=0xffff800037686000, vmspace=0xfffffd80679e5450 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 15871 351320 37786 0 2 0 syz-executor.3 15871 248058 37786 0 2 0x4000000 syz-executor.3 74781 141139 59280 0 2 0 syz-executor.0 *74781 312304 59280 0 7 0x4000000 syz-executor.0 80714 425523 61361 0 2 0 syz-executor.2 80714 64322 61361 0 3 0x4000080 fsleep syz-executor.2 91339 307328 96389 0 2 0 syz-executor.5 91339 229692 96389 0 3 0x4000080 bell syz-executor.5 91339 35170 96389 0 3 0x4000080 fsleep syz-executor.5 30429 150562 87130 0 2 0 syz-executor.7 30429 371603 87130 0 3 0x4000080 kqread syz-executor.7 30429 155604 87130 0 3 0x4000080 fsleep syz-executor.7 20977 138281 0 0 3 0x14200 acct acct 59280 61198 16714 0 3 0x82 nanoslp syz-executor.0 20728 165437 0 0 3 0x14280 nfsidl nfsio 18881 236883 0 0 3 0x14280 nfsidl nfsio 69542 497493 0 0 3 0x14280 nfsidl nfsio 31966 511744 0 0 3 0x14280 nfsidl nfsio 58545 509043 0 0 3 0x14280 nfsidl nfsio 12980 296631 0 0 3 0x14280 nfsidl nfsio 36579 217334 0 0 3 0x14280 nfsidl nfsio 54663 431232 0 0 3 0x14280 nfsidl nfsio 58079 145630 0 0 3 0x14280 nfsidl nfsio 10907 93588 0 0 3 0x14280 nfsidl nfsio 21956 442661 0 0 3 0x14280 nfsidl nfsio 21689 11768 0 0 3 0x14280 nfsidl nfsio 63910 356422 0 0 3 0x14280 nfsidl nfsio 72744 470087 0 0 3 0x14280 nfsidl nfsio 20536 490778 0 0 3 0x14280 nfsidl nfsio 52500 509374 0 0 3 0x14280 nfsidl nfsio 43526 244277 0 0 3 0x14280 nfsidl nfsio 69383 218287 0 0 3 0x14280 nfsidl nfsio 63097 514639 0 0 3 0x14280 nfsidl nfsio 29454 170220 0 0 3 0x14280 nfsidl nfsio 6665 367179 16714 0 3 0x82 nanoslp syz-executor.4 64270 295318 1 0 3 0x18100083 ttyin getty 99420 379229 0 0 3 0x14200 bored sosplice 87130 360355 16714 0 3 0x82 nanoslp syz-executor.7 96389 31752 16714 0 3 0x82 nanoslp syz-executor.5 43517 385064 16714 0 3 0x82 nanoslp syz-executor.6 37786 521260 16714 0 3 0x82 nanoslp syz-executor.3 61361 487759 16714 0 3 0x82 nanoslp syz-executor.2 17548 52927 16714 0 2 0x2 syz-executor.1 16714 198190 36433 0 3 0x1a000082 wait syz-fuzzer 16714 351644 36433 0 3 0x1e000082 thrsleep syz-fuzzer 16714 21235 36433 0 3 0x1e000082 thrsleep syz-fuzzer 16714 272170 36433 0 3 0x1e000082 wait syz-fuzzer 16714 490065 36433 0 3 0x1e000082 wait syz-fuzzer 16714 286206 36433 0 3 0x1e000082 thrsleep syz-fuzzer 16714 43006 36433 0 3 0x1e000082 kqread syz-fuzzer 16714 520679 36433 0 3 0x1e000082 thrsleep syz-fuzzer 16714 69416 36433 0 3 0x1e000082 wait syz-fuzzer 16714 488069 36433 0 3 0x1e000082 wait syz-fuzzer 16714 444499 36433 0 3 0x1e000082 thrsleep syz-fuzzer 16714 220776 36433 0 3 0x1e000082 wait syz-fuzzer 16714 229565 36433 0 3 0x1e000082 wait syz-fuzzer 16714 246776 36433 0 3 0x1e000082 wait syz-fuzzer 36433 324916 20061 0 3 0x810008a sigsusp ksh 20061 147695 268 0 3 0x1800009a kqread sshd 268 103104 1 0 3 0x18000088 kqread sshd 40656 169402 31901 73 3 0x19100090 kqread syslogd 31901 451556 1 0 3 0x18100082 netio syslogd 37052 173783 1 0 3 0x18100080 kqread resolvd 4045 367511 51573 77 3 0x18100092 kqread dhcpleased 50906 155022 51573 77 3 0x18100092 kqread dhcpleased 51573 344781 1 0 3 0x18000080 kqread dhcpleased 12335 283865 0 0 3 0x14200 bored smr 26684 313401 0 0 2 0x14200 zerothread 10837 53956 0 0 3 0x14200 aiodoned aiodoned 95838 375900 0 0 3 0x14200 syncer update 86142 106990 0 0 3 0x14200 cleaner cleaner 46636 421810 0 0 3 0x14200 reaper reaper 56629 295970 0 0 3 0x14200 pgdaemon pagedaemon 85431 442102 0 0 3 0x14200 bored viomb 88773 145372 0 0 3 0x40014200 acpi0 acpi0 85068 457611 0 0 3 0x14200 bored softnet3 93342 280454 0 0 3 0x14200 bored softnet2 62900 185730 0 0 3 0x14200 bored softnet1 2989 168366 0 0 3 0x14200 bored softnet0 73905 146286 0 0 3 0x14200 bored systqmp 57084 148736 0 0 3 0x14200 bored systq 58453 502085 0 0 3 0x40014200 tmoslp softclock 81489 87643 0 0 3 0x40014200 idle0 1 282954 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 10173 6409K 6854K 166960K 15944 0 pcb 15 14K 15K 166960K 266 0 rtable 153 9K 11K 166960K 596 0 pf 25 8K 9K 166960K 115 0 ifaddr 29 8K 11K 166960K 94 0 ifgroup 42 1K 2K 166960K 172 0 counters 28 17K 17K 166960K 66 0 ioctlops 0 0K 2K 166960K 170 0 iov 0 0K 42K 166960K 179 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1556 98K 98K 166960K 3049 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 41 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 597 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 15 53K 77K 166960K 2288 0 sigio 2 0K 0K 166960K 39 0 proc 58 59K 83K 166960K 656 0 subproc 104 6K 6K 166960K 143 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 38 0 in_multi 55 4K 7K 166960K 153 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 634 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 352 87K 88K 166960K 23339 0 UVM aobj 131 4K 4K 166960K 133 0 pinsyscall 22 44K 100K 166960K 1285 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 54 0 NDP 9 0K 2K 166960K 69 0 temp 74 6804K 6892K 166960K 12327 0 kqueue 14 20K 24K 166960K 227 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 90 0 87 1 0 1 1 0 8 0 rtentry 112 164 0 99 4 0 4 4 0 8 0 unpcb 144 1721 0 1706 6 0 6 6 0 8 5 syncache 336 19 0 19 2 1 1 1 0 8 1 tcpqe 32 319 0 319 2 1 1 1 0 8 1 tcpcb 808 600 0 583 11 2 9 9 0 8 6 arp 88 32 0 22 1 0 1 1 0 8 0 inpcb 360 1712 0 1692 11 2 9 9 0 8 5 nd6 104 34 0 22 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1072 18 0 18 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 616 0 335 29 2 27 29 0 8 7 art_table 32 617 0 335 4 0 4 4 0 8 0 art_node 16 163 0 105 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 10 1 0 1 1 0 8 0 semapl 112 595 0 585 1 0 1 1 0 8 0 shmpl 112 130 0 2 4 0 4 4 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 4785 0 3261 96 0 96 96 0 8 0 ffsino 240 4785 0 3261 90 0 90 90 0 8 0 nchpl 144 8009 0 6281 66 0 66 66 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 28334 0 28332 4 2 2 3 0 8 1 vcpupl 2048 42 0 0 6 0 6 6 0 8 0 vmpool 664 45 0 3 4 0 4 4 0 8 0 kstatmem 264 94 0 76 2 0 2 2 0 8 0 scxspl 216 24006 0 24006 11 7 4 8 1 8 4 plimitpl 152 439 0 423 1 0 1 1 0 8 0 sigapl 424 2603 0 2537 8 0 8 8 0 8 0 futexpl 64 21378 0 21375 1 0 1 1 0 8 0 knotepl 120 29426 0 29344 6 0 6 6 0 8 2 kqueuepl 184 491 0 480 7 3 4 4 0 8 3 pipepl 288 556 0 527 7 0 7 7 0 8 4 fdescpl 432 2564 0 2538 4 0 4 4 0 8 0 filepl 120 16137 0 15881 15 1 14 14 0 8 6 lockfpl 104 833 0 831 3 1 2 2 0 8 1 lockfspl 48 341 0 339 1 0 1 1 0 8 0 sessionpl 144 27 0 11 1 0 1 1 0 8 0 pgrppl 48 107 0 91 1 0 1 1 0 8 0 ucredpl 104 2593 0 2583 1 0 1 1 0 8 0 zombiepl 144 2539 0 2537 1 0 1 1 0 8 0 processpl 1072 2603 0 2537 5 0 5 5 0 8 0 procpl 680 5960 0 5874 9 0 9 9 0 8 1 sosppl 168 24 0 19 1 0 1 1 0 8 0 sockpl 488 3529 0 3491 40 25 15 22 0 8 8 mcl64k 65536 95 0 95 2 1 1 1 0 8 1 mcl16k 16384 40 0 40 2 1 1 1 0 8 1 mcl12k 12288 58 0 58 2 1 1 1 0 8 1 mcl9k 9216 52 0 52 2 1 1 1 0 8 1 mcl8k 8192 139 0 139 2 1 1 1 0 8 1 mcl4k 4096 239 0 239 2 1 1 1 0 8 1 mcl2k2 2112 15 0 15 2 1 1 1 0 8 1 mcl2k 2048 78674 0 78577 35 21 14 25 0 8 0 mtagpl 96 485 0 73 11 0 11 11 0 8 0 mbufpl 256 141761 0 141228 75 39 36 67 0 8 1 bufpl 280 7484 0 1148 453 0 453 453 0 8 0 anonpl 24 388503 0 373757 135 24 111 111 0 188 18 amapchunkpl 152 75673 0 74828 47 1 46 46 0 158 10 amappl16 200 9722 0 9250 53 20 33 36 0 8 7 amappl15 192 33 0 32 1 0 1 1 0 8 0 amappl14 184 180 0 170 2 1 1 2 0 8 0 amappl13 176 32 0 31 1 0 1 1 0 8 0 amappl12 168 3228 0 3201 2 0 2 2 0 8 0 amappl11 160 59 0 49 1 0 1 1 0 8 0 amappl10 152 40 0 31 1 0 1 1 0 8 0 amappl9 144 131 0 129 1 0 1 1 0 8 0 amappl8 136 172 0 109 3 0 3 3 0 8 0 amappl7 128 52 0 42 1 0 1 1 0 8 0 amappl6 120 406 0 390 2 1 1 2 0 8 0 amappl5 112 230 0 218 1 0 1 1 0 8 0 amappl4 104 568 0 531 2 0 2 2 0 8 0 amappl3 96 15416 0 15335 3 0 3 3 0 8 0 amappl2 88 3092 0 3021 4 1 3 4 0 8 0 amappl1 80 17448 0 16961 21 8 13 21 0 8 0 amappl 88 22708 0 22490 6 0 6 6 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 132 0 2 3 0 3 3 0 8 0 uaddrrnd 24 2609 0 2541 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2609 0 2541 1 0 1 1 0 8 0 vmmpekpl 168 22544 0 22485 3 0 3 3 0 8 0 vmmpepl 168 173232 0 170986 160 35 125 133 0 357 22 vmsppl 352 2608 0 2541 7 0 7 7 0 8 0 rwobjpl 24 53902 0 46381 47 1 46 46 0 8 0 pdppl 4096 5224 0 5124 216 110 106 106 0 8 6 pvpl 32 922428 0 902199 398 199 199 359 0 265 29 pmappl 216 2608 0 2541 4 0 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 595 0 183 12 0 12 12 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