syzbot

kernel: protection fault trap, code=0
Stopped at      mtx_enter+0x6e: movq    0(%r14),%r15
ddb> 
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
the kernel did not panic
ddb> trace
mtx_enter(deafbeaddeafbf8d) at mtx_enter+0x6e sys/kern/kern_lock.c:549
prsignal(deafbeaddeafbead,14) at prsignal+0x36 sys/kern/kern_sig.c:904
reaper(ffff80002a72cf90) at reaper+0x2bc sys/kern/kern_exit.c:516
end trace frame: 0x0, count: -3
ddb> show registers
rdi                                0
rsi                                0
rbp               0xffff80002a7639a0
rbx                          0x40000    acpi_pdirpa+0x2be71
rdx                                0
rcx                                0
rax               0xffff80002a72cf00
r8                0xffffffffffffffff
r9                                 0
r10               0x542940f1ba4fd831
r11               0xbc690ad4e61e3cd6
r12               0xdeafbeaddeafbead
r13                          0x40000    acpi_pdirpa+0x2be71
r14               0xdeafbeaddeafbf8d
r15                                0
rip               0xffffffff810f5cbe    mtx_enter+0x6e
cs                               0x8
rflags                       0x10297    __ALIGN_SIZE+0xf297
rsp               0xffff80002a763970
ss                              0x10
mtx_enter+0x6e: movq    0(%r14),%r15
ddb> show proc
PROC (reaper) tid=286133 pid=5160 tcnt=1 stat=onproc
    flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
    runpri=32, usrpri=50, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff80002a72ca60,0xffff80002a72d238
    process=0xffff8000ffffd200 user=0xffff80002a75e000, vmspace=0xffffffff83948db0
    estcpu=0, cpticks=5, pctcpu=0.0, user=0, sys=0, intr=0
ddb> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 12165  101694  42723      0  2           0                syz-executor
 12165  456102  42723      0  3   0x4000080  fsleep        syz-executor
 12165    6471  42723      0  3   0x4000080  fsleep        syz-executor
 22928  290393      0      0  3     0x14280  nfsidl        nfsio
 53729  167558      0      0  3     0x14280  nfsidl        nfsio
 25789  366883  62355      0  2           0                syz-executor
 25789   79369  62355      0  3   0x4000080  fsleep        syz-executor
 18002  431489      0      0  3     0x14280  nfsidl        nfsio
  3862  197999      0      0  3     0x14280  nfsidl        nfsio
 71479  356495  23550      0  2           0                syz-executor
 71479  223653  23550      0  3   0x4000080  fsleep        syz-executor
 71479  378350  23550      0  3   0x4000080  fsleep        syz-executor
  4787  170199  39132      0  2        0x11                syz-executor
  4787  214542  39132      0  3   0x4000090  lockf         syz-executor
  4787  427031  39132      0  3   0x4000090  fsleep        syz-executor
 42808  462233  37095      0  2           0                syz-executor
 42808  217235  37095      0  2   0x4000080                syz-executor
 42808  279136  37095      0  3   0x4000080  sysctllk      syz-executor
 39989  426893  16504      0  3        0x80  nanoslp       syz-executor
 39989  335222  16504      0  2   0x4000000                syz-executor
 39989  147945  16504      0  3   0x4000080  sysctllk      syz-executor
 16504  102884   5705      0  3        0x82  nanoslp       syz-executor
 23550  231400   5705      0  3        0x82  nanoslp       syz-executor
 39132  185417   5705      0  3        0x82  nanoslp       syz-executor
 86081  204148   5705      0  2         0x2                syz-executor
 62355  181753   5705      0  3        0x82  nanoslp       syz-executor
 42723  524058   5705      0  2         0x2                syz-executor
 47933  411581   5705      0  3        0x82  nanoslp       syz-executor
 37095  233004   5705      0  3        0x82  nanoslp       syz-executor
  5705    2397  59640      0  3        0x82  kqread        syz-executor
 59640  129524  12306      0  3    0x10008a  sigsusp       ksh
 12306   18178  78945      0  3        0x98  kqread        sshd-session
 78945  363551  33085      0  3        0x92  kqread        sshd-session
  1090  469706      1      0  3    0x100083  ttyin         getty
 33085  123768      1      0  3        0x88  kqread        sshd
  6645  123388  27677     73  3   0x1100090  kqread        syslogd
 27677  478360      1      0  3    0x100082  sbwait        syslogd
 58960  299304      1      0  3    0x100080  kqread        resolvd
 26083  155167  32527     77  3    0x100092  kqread        dhcpleased
 25952  275776  32527     77  3    0x100092  kqread        dhcpleased
 32527  262854      1      0  3        0x80  kqread        dhcpleased
 97120   53601      0      0  3     0x14200  bored         smr
  7487   36909      0      0  2     0x14200                zerothread
 85023   99495      0      0  3     0x14200  aiodoned      aiodoned
 87648  229401      0      0  3     0x14200  syncer        update
 96497  319247      0      0  3     0x14200  cleaner       cleaner
* 5160  286133      0      0  7     0x14200                reaper
 41442  508193      0      0  3     0x14200  pgdaemon      pagedaemon
  6998  436204      0      0  3     0x14200  bored         viomb
 29967  448133      0      0  3  0x40014200  acpi0         acpi0
  3788  516943      0      0  3     0x14200  bored         softnet0
  5857  517739      0      0  3     0x14200  bored         systqmp
  1909  325065      0      0  3     0x14200  bored         systq
 11346  249152      0      0  3  0x40014200  tmoslp        softclock
 64213  444119      0      0  3  0x40014200                idle0
     1   50197      0      0  3        0x82  wait          init
     0       0     -1      0  3  0x10010200  scheduler     swapper
ddb> show all locks
No such command
ddb> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10210  11241K   12454K 166960K     13302        0
            pcb    19     14K      16K 166960K       237        0
         rtable   221     10K      11K 166960K       549        0
             pf    29     12K      14K 166960K       100        0
         ifaddr    36      6K       7K 166960K        92        0
        ifgroup    46      2K       2K 166960K       143        0
         sysctl     4      1K       9K 166960K        19        0
       counters    32     17K      18K 166960K        81        0
       ioctlops     0      0K       4K 166960K       207        0
            iov     0      0K      16K 166960K        24        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1481     93K      94K 166960K      2354        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K       5K 166960K        16        0
         VM map     2      1K       1K 166960K         2        0
            sem    12      0K       0K 166960K        38        0
        dirhash    12      2K       2K 166960K        15        0
           ACPI  1692    195K     286K 166960K     12470        0
      file desc    17     61K      97K 166960K       914        0
          sigio     1      0K       0K 166960K        22        0
           proc    63     67K     124K 166960K       585        0
        subproc    72      4K       4K 166960K        82        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     1      0K       0K 166960K        88        0
       in_multi    84      6K       7K 166960K       145        0
    ether_multi     3      0K       0K 166960K        10        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   277   1235K    1235K 166960K       277        0
           exec     0      0K       1K 166960K       552        0
   fusefs mount     1     32K      32K 166960K         1        0
     pfkey data     0      0K       0K 166960K         3        0
            tdb     3      0K       0K 166960K         3        0
        VM swap     8     62K      64K 166960K        10        0
       UVM amap   241    153K     174K 166960K      9582        0
       UVM aobj    57      8K       8K 166960K        61        0
     pinsyscall    38     76K      96K 166960K      2026        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K        69        0
            NDP    10      0K       2K 166960K        59        0
           temp    57   8667K    8733K 166960K     34824        0
         kqueue    19     27K      36K 166960K       201        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      245    0      241     3     2     1     3     0     8    0
rtentry    136      153    0       71     4     0     4     4     0     8    0
unpcb      144     1018    0     1000     6     5     1     6     0     8    0
syncache   336        7    0        7     1     1     0     1     0     8    0
tcpqe       32        2    0        2     1     1     0     1     0     8    0
tcpcb      736      502    0      495     7     3     4     7     0     8    3
arp         96       26    0       10     1     0     1     1     0     8    0
ipq         40        2    0        0     1     0     1     1     0     8    0
ipqe        40       68    0       66     1     0     1     1     0     8    0
inpcb      328     1025    0     1012     7     3     4     7     0     8    2
ip6q        72        2    0        1     2     1     1     1     0     8    0
ip6af       40        3    0        2     2     1     1     1     0     8    0
nd6        112       29    0       10     1     0     1     1     0     8    0
pkpcb       40        8    0        8     2     1     1     1     0     8    1
kcovpl      48        9    0        1     1     0     1     1     0     8    0
ppxss      1072      36    0       36     2     1     1     1     0     8    1
pppxif     1384       6    0        6     1     1     0     1     0     8    0
art_heap8  4096       3    0        0     3     0     3     3     0     8    0
art_heap4  256      616    0      253    29     5    24    29     0     8    0
art_table   40      619    0      253     5     0     5     5     0     8    0
art_node    32      153    0       81     1     0     1     1     0     8    0
sysvmsgpl   40        5    0        3     1     0     1     1     0     8    0
semupl     112        2    0        2     1     1     0     1     0     8    0
semapl     112       34    0       24     1     0     1     1     0     8    0
shmpl      112       55    0        4     2     0     2     2     0     8    0
dirhash    1024      19    0        2     3     0     3     3     0     8    0
dino2pl    256     3152    0     1660    95     0    95    95     0     8    0
ffsino     256     3152    0     1660    95     0    95    95     0     8    0
nchpl      144     4412    0     2719    64     0    64    64     0     8    0
rtmask      32        8    0        8     1     1     0     1     0     8    0
vnodes     216     3755    0        0   209     0   209   209     0     8    0
namei      1024   16066    0    16066     3     1     2     2     0     8    2
vcpupl     3904       3    0        0     1     0     1     1     0     8    0
vmpool     800        3    0        0     1     0     1     1     0     8    0
kstatmem   264       82    0       62     2     0     2     2     0     8    0
scsiplug    72       10    0       10     2     1     1     1     0     8    1
scxspl     216    14538    0    14538     8     7     1     8     1     8    1
plimitpl   152      313    0      296     1     0     1     1     0     8    0
sigapl     424     1223    0     1177     9     3     6     8     0     8    0
knotepl    120    62814    0    62753    38    29     9    24     0     8    6
kqueuepl   184      508    0      496     5     4     1     5     0     8    0
pipepl     304      285    0      257     5     2     3     5     0     8    0
fdescpl    448     1184    0     1155     5     1     4     5     0     8    0
filepl     120     9002    0     8783    14     6     8    14     0     8    0
lockfpl    104      264    0      259     1     0     1     1     0     8    0
lockfspl    48      108    0      104     1     0     1     1     0     8    0
sessionpl  144       25    0       17     1     0     1     1     0     8    0
pgrppl      48       86    0       70     1     0     1     1     0     8    0
ucredpl    104     1602    0     1588     1     0     1     1     0     8    0
zombiepl   144     1246    0     1245     1     0     1     1     0     8    0
processpl  1152    1223    0     1177     5     1     4     5     0     8    0
procpl     664     2367    0     2310     8     2     6     7     0     8    0
sockpl     552     2323    0     2288    18    13     5    17     0     8    2
mcl64k     65536    190    0      190     2     1     1     1     0     8    1
mcl12k     12288      1    0        1     1     1     0     1     0     8    0
mcl9k      9216       5    0        5     1     1     0     1     0     8    0
mcl8k      8192       8    0        8     1     1     0     1     0     8    0
mcl4k      4096    3453    0     3402    14     7     7    14     0     8    0
mcl2k      2048    1661    0     1655     6     4     2     5     0     8    1
mtagpl      96      177    0       11     5     0     5     5     0     8    0
mbufpl     256    15223    0    14913    92    67    25    85     0     8    4
bufpl      280     5044    0      128   352     0   352   352     0     8    0
anonpl      24   188611    0   182227    58    19    39    45     0   187    0
amapchunkpl 152   32833    0    32174    37    10    27    32     0   158    0
amappl16   200     3085    0     3021    16    12     4    15     0     8    0
amappl15   192        5    0        5     1     1     0     1     0     8    0
amappl14   184       11    0       11     1     1     0     1     0     8    0
amappl13   176      416    0      415     1     0     1     1     0     8    0
amappl12   168     1541    0     1503     2     0     2     2     0     8    0
amappl11   160       39    0       39     1     1     0     1     0     8    0
amappl10   152       42    0       32     1     0     1     1     0     8    0
amappl9    144      254    0      254     1     1     0     1     0     8    0
amappl8    136       53    0       51     1     0     1     1     0     8    0
amappl7    128       84    0       83     1     0     1     1     0     8    0
amappl6    120      280    0      268     1     0     1     1     0     8    0
amappl5    112       73    0       65     1     0     1     1     0     8    0
amappl4    104      409    0      385     1     0     1     1     0     8    0
amappl3     96     6351    0     6242     3     0     3     3     0     8    0
amappl2     88      552    0      499     2     0     2     2     0     8    0
amappl1     80    13125    0    12583    13     0    13    13     0     8    0
amappl      88     8698    0     8528     5     0     5     5     0    92    0
uvmvnodes   80      116    0        0     3     0     3     3     0     8    0
dma4096    4096       1    0        1     1     1     0     1     0     8    0
dma2048    2048       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      258    0      258     1     1     0     1     0     8    0
dma64       64        8    0        8     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       60    0        4     2     0     2     2     0     8    0
uaddrrnd    24     1184    0     1155     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     1184    0     1155     1     0     1     1     0     8    0
vmmpekpl   168    11012    0    10978     2     0     2     2     0     8    0
vmmpepl    168    80625    0    78788    92     9    83    91     0   357    0
vmsppl     368     1183    0     1155     4     1     3     4     0     8    0
rwobjpl     40    22813    0    21749    13     2    11    13     0     8    0
pdppl      4096    2380    0     2313   113    44    69    82     0     8    2
pvpl        32   513394    0   500570   130    21   109   109     0   265    3
pmappl     216     1186    0     1155     3     0     3     3     0     8    0
extentpl    40       45    0       27     1     0     1     1     0     8    0
phpool     112      477    0      139    13     0    13    13     0     8    0
ddb> machine ddbcpu 0
No such command
ddb> trace
mtx_enter(deafbeaddeafbf8d) at mtx_enter+0x6e sys/kern/kern_lock.c:549
prsignal(deafbeaddeafbead,14) at prsignal+0x36 sys/kern/kern_sig.c:904
reaper(ffff80002a72cf90) at reaper+0x2bc sys/kern/kern_exit.c:516
end trace frame: 0x0, count: -3
ddb> machine ddbcpu 1
No such command
ddb> trace
mtx_enter(deafbeaddeafbf8d) at mtx_enter+0x6e sys/kern/kern_lock.c:549
prsignal(deafbeaddeafbead,14) at prsignal+0x36 sys/kern/kern_sig.c:904
reaper(ffff80002a72cf90) at reaper+0x2bc sys/kern/kern_exit.c:516
end trace frame: 0x0, count: -3