TITLE: KASAN: invalid memory access in bioioctl
TYPE: KASAN-UNKNOWN

panic: Caught invalid memory access at ffff8000352e42e0 size 8 op 0
Stopped at      db_enter+0x17:  popq    %rbp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*400711  72916      0           0  0x4000000    1K syz-executor
 182737  64979      0           0  0x4000000    0  syz-executor
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff846334c7) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load8_noabort(ffff8000352e42e0) at __asan_load8_noabort+0xde kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline]
__asan_load8_noabort(ffff8000352e42e0) at __asan_load8_noabort+0xde sys/kern/subr_kasan.c:1038
bioioctl(4f14,4004667b,ffff8000352e42e0,1,ffff800029923768) at bioioctl+0x130 sys/dev/bio.c:111
VOP_IOCTL(ffff80000183a560,4004667b,ffff8000352e42e0,1,ffff800000119340,ffff800029923768) at VOP_IOCTL+0x131 sys/kern/vfs_vops.c:264
vn_ioctl(ffff8000016a55a0,4004667b,ffff8000352e42e0,ffff800029923768) at vn_ioctl+0x18c sys/kern/vfs_vnops.c:537
sys_fcntl(ffff800029923768,ffff8000352e4560,ffff8000352e44c0) at sys_fcntl+0xbad sys/kern/kern_descrip.c:501
syscall(ffff8000352e4560) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff8000352e4560) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2057d0ec5f0, count: 6
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ddb{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: Caught invalid memory access at ffff8000352e42e0 size 8 op 0
ddb{1}> trace
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff846334c7) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load8_noabort(ffff8000352e42e0) at __asan_load8_noabort+0xde kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline]
__asan_load8_noabort(ffff8000352e42e0) at __asan_load8_noabort+0xde sys/kern/subr_kasan.c:1038
bioioctl(4f14,4004667b,ffff8000352e42e0,1,ffff800029923768) at bioioctl+0x130 sys/dev/bio.c:111
VOP_IOCTL(ffff80000183a560,4004667b,ffff8000352e42e0,1,ffff800000119340,ffff800029923768) at VOP_IOCTL+0x131 sys/kern/vfs_vops.c:264
vn_ioctl(ffff8000016a55a0,4004667b,ffff8000352e42e0,ffff800029923768) at vn_ioctl+0x18c sys/kern/vfs_vnops.c:537
sys_fcntl(ffff800029923768,ffff8000352e4560,ffff8000352e44c0) at sys_fcntl+0xbad sys/kern/kern_descrip.c:501
syscall(ffff8000352e4560) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff8000352e4560) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2057d0ec5f0, count: -9
ddb{1}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff8000352e3cb0
rbx               0xffff8000352e3d20
rdx                                0
rcx               0xffff800028ff3ff0
rax               0xffff800000168180
r8                 0x101010101010101
r9                0x8080808080808080
r10               0xffff8000352e3a98
r11               0xffffffff814e1f30    x86_bus_space_io_read_1
r12               0xffffffff846334c7    db_machine_command_table+0x9b027
r13               0xffff800028ff4c08
r14               0xffff800028ff4e07
r15                              0x1
rip               0xffffffff81006567    db_enter+0x17
cs                               0x8
rflags                         0x246
rsp               0xffff8000352e3cb0
ss                              0x10
db_enter+0x17:  popq    %rbp
ddb{1}> show proc
PROC (syz-executor) tid=400711 pid=72916 tcnt=2 stat=onproc
    flags process=0 proc=4000000<THREAD>
    runpri=32, usrpri=86, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff8000298a59f8,0xffffffff85d476a0
    process=0xffff800045ff1d00 user=0xffff8000352d9000, vmspace=0xffff800001ae09a8
    estcpu=36, cpticks=13, pctcpu=0.0, user=0, sys=13, intr=0
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 72916   12001  97136      0  2           0                syz-executor
*72916  400711  97136      0  7   0x4000000                syz-executor
 95204  519521  85761      0  3        0x80  nanoslp       syz-executor
 95204  405346  85761      0  3   0x4000080  fsleep        syz-executor
 95204  401818  85761      0  2   0x4000000                syz-executor
 95204  300414  85761      0  3   0x4000080  fsleep        syz-executor
 97779   28560    252      0  2           0                syz-executor
 97779  378052    252      0  2   0x4000000                syz-executor
 64979  343048   9117      0  2           0                syz-executor
 64979  182737   9117      0  7   0x4000000                syz-executor
 59931   81748  37252      0  2           0                syz-executor
 59931  147036  37252      0  3   0x4000080  fsleep        syz-executor
 59931  242824  37252      0  3   0x4000080  fsleep        syz-executor
 38037  176613  88917      0  2           0                syz-executor
 38037  459613  88917      0  3   0x4000080  fsleep        syz-executor
 74963  179935  69155      0  2       0xc80                syz-executor
 74963   36002  69155      0  3   0x4000080  fsleep        syz-executor
 74963  351159  69155      0  3   0x4000080  kqpoll        syz-executor
  3305  477029      1      0  3        0x80  nanoslp       init
 88917  231512  54115      0  2       0xc82                syz-executor
 85761  340151  54115      0  2       0xc82                syz-executor
   252  314498  54115      0  2       0xc82                syz-executor
 97136  230532  54115      0  3        0x82  nanoslp       syz-executor
  9117  251514  54115      0  2         0x2                syz-executor
 37252   75385  54115      0  3        0x82  nanoslp       syz-executor
 69155  445493  54115      0  3        0x82  nanoslp       syz-executor
 15159   38007  54115      0  2         0x2                syz-executor
 54115  299648      1      0  3        0x82  kqread        syz-executor
 76784  339140      0      0  3     0x14200  bored         smr
 95943  262591      0      0  2     0x14200                zerothread
 62777  474550      0      0  3     0x14200  aiodoned      aiodoned
 71009  330353      0      0  3     0x14200  syncer        update
 71249  337387      0      0  3     0x14200  cleaner       cleaner
  6797   46111      0      0  3     0x14200  reaper        reaper
 93363  315612      0      0  3     0x14200  pgdaemon      pagedaemon
 11810   43806      0      0  3     0x14200  bored         viomb
 79775  179163      0      0  3  0x40014200  acpi0         acpi0
 47774  148193      0      0  3  0x40014200                idle1
  8508  220098      0      0  3     0x14200  bored         softnet1
 68173   91652      0      0  3     0x14200  bored         softnet0
 23683  145945      0      0  3     0x14200  bored         systqmp
  8923  341829      0      0  3     0x14200  bored         systq
 49016  264243      0      0  3     0x14200  tmoslp        softclockmp
 62827  393039      0      0  3  0x40014200  tmoslp        softclock
 42000  200048      0      0  3  0x40014200                idle0
     1  300222      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{1}> show all locks
Process 72916 (syz-executor) thread 0xffff800029923768 (400711)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff85d533c0)
#0  witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x632 sys/kern/subr_witness.c:1160
#1  vn_ioctl+0x9e sys/kern/vfs_vnops.c:520
#2  sys_fcntl+0xbad sys/kern/kern_descrip.c:501
#3  syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#3  syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
#4  Xsyscall+0x128
Process 64979 (syz-executor) thread 0xffff800029923238 (182737)
shared rwlock vmmaplk r = 0 (0xffff800001ae0120)
#0  witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x632 sys/kern/subr_witness.c:1160
#1  rw_do_enter_read+0x55d sys/kern/kern_rwlock.c:413
#2  uvmfault_lookup+0x1a2 sys/uvm/uvm_fault.c:-1
#3  uvm_fault_check+0x43 sys/uvm/uvm_fault.c:693
#4  uvm_fault+0x1e7 sys/uvm/uvm_fault.c:627
#5  kpageflttrap+0x41e sys/arch/amd64/amd64/trap.c:283
#6  kerntrap+0x1b6 sys/arch/amd64/amd64/trap.c:528
#7  alltraps_kern_meltdown+0x7b
#8  copyout+0x59
#9  syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#9  syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
#10 Xsyscall+0x128
Process 15159 (syz-executor) thread 0xffff800029922540 (38007)
exclusive rrwlock inode r = 0 (0xffff8000018267c0)
#0  witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x632 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320
#2  rrw_enter+0xf0 sys/kern/kern_rwlock.c:621
#3  VOP_LOCK+0x17e sys/kern/vfs_vops.c:527
#4  vn_lock+0xca sys/kern/vfs_vnops.c:576
#5  vget+0x321 sys/kern/vfs_subr.c:692
#6  ufs_ihashget+0x233 sys/ufs/ufs/ufs_ihash.c:98
#7  ffs_vget+0x10b sys/ufs/ffs/ffs_vfsops.c:1203
#8  ufs_lookup+0x1529 sys/ufs/ufs/ufs_lookup.c:478
#9  VOP_LOOKUP+0xda sys/kern/vfs_vops.c:85
#10 vfs_lookup+0xfbd sys/kern/vfs_lookup.c:580
#11 namei+0xe19 sys/kern/vfs_lookup.c:250
#12 dounlinkat+0x102 sys/kern/vfs_syscalls.c:1807
#13 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xffff8000016ca550)
#0  witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x632 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320
#2  rrw_enter+0xf0 sys/kern/kern_rwlock.c:621
#3  VOP_LOCK+0x17e sys/kern/vfs_vops.c:527
#4  vn_lock+0xca sys/kern/vfs_vnops.c:576
#5  vfs_lookup+0x1f7 sys/kern/vfs_lookup.c:431
#6  namei+0xe19 sys/kern/vfs_lookup.c:250
#7  dounlinkat+0x102 sys/kern/vfs_syscalls.c:1807
#8  syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
#9  Xsyscall+0x128
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 11051  12236K   12391K 166960K     12218        0
            pcb    18     24K      24K 166960K        29        0
         rtable   237     12K      13K 166960K       351        0
             pf    34     22K      24K 166960K        50        0
         ifaddr    43     12K      12K 166960K        47        0
        ifgroup    55      2K       2K 166960K        61        0
         sysctl     1      1K      13K 166960K         8        0
       counters    70     42K      43K 166960K        74        0
       ioctlops     0      0K       4K 166960K      1494        0
            iov     0      0K      12K 166960K         4        0
          mount     1      1K       1K 166960K         1        0
            log     1      0K       0K 166960K         5        0
         vnodes  1298     84K      84K 166960K      1419        0
      UFS quota     1     36K      36K 166960K         1        0
      UFS mount     5     44K      44K 166960K         5        0
            shm     2      2K       6K 166960K        10        0
         VM map     2      1K       1K 166960K         2        0
            sem     6      0K       0K 166960K         7        0
        dirhash    12      2K       2K 166960K        12        0
           ACPI  1692    195K     286K 166960K     12470        0
      file desc    16     61K      93K 166960K       216        0
           proc    14     46K     177K 166960K       580        0
        subproc    72      9K       9K 166960K        72        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     20K      20K 166960K         1        0
       in_multi    99      7K       7K 166960K        99        0
    ether_multi     1      0K       0K 166960K         1        0
            mrt     0      0K       0K 166960K         6        0
    ISOFS mount     1     36K      36K 166960K         1        0
  MSDOSFS mount     1     20K      20K 166960K         1        0
           ttys    61    425K     425K 166960K        61        0
           exec     0      0K       2K 166960K       386        0
   fusefs mount     1     36K      36K 166960K         1        0
            tdb     3      1K       1K 166960K         3        0
        VM swap     8     62K      64K 166960K        10        0
       UVM amap   126    119K     251K 166960K      3859        0
       UVM aobj    13      4K       4K 166960K        13        0
     pinsyscall    18     36K     107K 166960K      1377        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
            NDP    12      0K       2K 166960K        30        0
           temp    35   9162K    9202K 166960K      4115        0
         kqueue     2      8K      52K 166960K        40        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       28    0        0     1     0     1     1     0     8    0
rtpcb      120       35    0       35     1     0     1     1     0     8    1
rtentry    176      111    0        1     5     0     5     5     0     8    0
unpcb      144      113    0      111     2     0     2     2     0     8    1
syncache   336        4    0        4     2     2     0     1     0     8    0
tcpcb      736       13    0       12     1     0     1     1     0     8    0
arp        136       18    0        0     1     0     1     1     0     8    0
inpcb      328       94    0       91     2     0     2     2     0     8    1
nd6        152       24    0        0     1     0     1     1     0     8    0
kcovpl      48        8    0        0     1     0     1     1     0     8    0
ppxss      1192       1    0        1     1     0     1     1     0     8    1
pffrag     232        2    0        0     1     0     1     1     0   482    0
pffrnode    88        2    0        0     1     0     1     1     0     8    0
pffrent     40        3    0        1     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       27    0        0     1     0     1     1     0     8    0
pfstkey    128       27    0        0     1     0     1     1     0     8    0
pfstate    448       27    0        0     3     0     3     3     0     8    0
pfrule     1360      22    0       17     2     1     1     2     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256      452    0        0    29     0    29    29     0     8    0
art_table   40      453    0        0     5     0     5     5     0     8    0
art_node    32      111    0       11     1     0     1     1     0     8    0
semapl      72        4    0        0     1     0     1     1     0     8    0
shmpl      112       10    0        0     1     0     1     1     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256     1700    0      220    93     0    93    93     0     8    0
ffsino     296     1700    0      220   115     0   115   115     0     8    0
nchpl      144     2003    0      297    64     0    64    64     0     8    0
vnodes     216     1828    0        0   102     0   102   102     0     8    0
namei      1024    6195    0     6194     2     0     2     2     0     8    1
percpumem   16       53    0        2     1     0     1     1     0     8    0
kstatmem   264       31    0        4     2     0     2     2     0     8    0
scxspl     216     9117    0     9117     3     2     1     2     1     8    1
plimitpl   152       31    0       22     1     0     1     1     0     8    0
sigapl     424      535    0      500     7     0     7     7     0     8    1
knotepl    120      124    0        0     4     0     4     4     0     8    0
kqueuepl   224       54    0       50     1     0     1     1     0     8    0
pipepl     344      141    0      114     3     0     3     3     0     8    0
fdescpl    528      519    0      500     3     0     3     3     0     8    0
filepl     160     2068    0     1897    11     0    11    11     0     8    2
lockfpl    104       38    0       37     1     0     1     1     0     8    0
lockfspl    48       19    0       18     1     0     1     1     0     8    0
sessionpl  144       29    0       27     1     0     1     1     0     8    0
pgrppl      48       37    0       27     1     0     1     1     0     8    0
ucredpl    104      177    0      174     1     0     1     1     0     8    0
zombiepl   144      500    0      500     1     0     1     1     0     8    1
processpl  1232     535    0      500     5     0     5     5     0     8    0
procpl     664      675    0      629     6     0     6     6     0     8    1
sockpl     752      243    0      238     5     0     5     5     0     8    4
mcl64k     65536      3    0        0     1     0     1     1     0     8    0
mcl16k     16384      3    0        0     1     0     1     1     0     8    0
mcl9k128   9344       1    0        0     1     0     1     1     0     8    0
mcl8k      8192       1    0        0     1     0     1     1     0     8    0
mcl4k      4096     125    0        0    16     0    16    16     0     8    0
mcl2k      2048      21    0        0     3     0     3     3     0     8    0
mextrefs    64       17    0        0     1     0     1     1     0     8    0
mtagpl      96        3    0        0     1     0     1     1     0     8    0
mbufpl     256      233    0        0    15     0    15    15     0     8    0
bufpl      272     4477    0      105   292     0   292   292     0     8    0
anonpl      32     4531    0        0    37     0    37    37     0   222    0
amapchunkpl 152   11225    0    10889    21     0    21    21     0   158    6
amappl16   200     2155    0     2117     6     3     3     5     0     8    0
amappl15   192       21    0       21     1     1     0     1     0     8    0
amappl14   184      428    0      428     1     0     1     1     0     8    1
amappl13   176      127    0      127     1     0     1     1     0     8    1
amappl12   168      775    0      758     2     0     2     2     0     8    0
amappl11   160       11    0       11     2     1     1     1     0     8    1
amappl10   152       79    0       79     1     0     1     1     0     8    1
amappl9    144      287    0      287     1     1     0     1     0     8    0
amappl8    136      118    0      118     1     0     1     1     0     8    1
amappl7    128      166    0      164     1     0     1     1     0     8    0
amappl6    120      172    0      172     1     0     1     1     0     8    1
amappl5    112      101    0      100     1     0     1     1     0     8    0
amappl4    104      304    0      302     1     0     1     1     0     8    0
amappl3     96     2000    0     1926     4     0     4     4     0     8    1
amappl2     88      541    0      535     2     0     2     2     0     8    0
amappl1     80    10969    0    10878    15     1    14    15     0     8    8
amappl      88     3047    0     2932     4     0     4     4     0    92    0
uvmvnodes   80      102    0        0     3     0     3     3     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        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       12    0        0     1     0     1     1     0     8    0
uaddrrnd    24      519    0      500     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24      519    0      500     1     0     1     1     0     8    0
vmmpekpl   168     6390    0     6360     2     0     2     2     0     8    0
vmmpepl    168    43139    0    42321    86     0    86    86     0   357   48
vmsppl     488      518    0      500     5     0     5     5     0     8    1
rwobjpl     80    15770    0    15373    23     0    23    23     0     8    1
pdppl      4096    1047    0     1000    97    44    53    87     0     8    6
pvpl        32     9877    0        0    81     1    80    80     0   265    0
pmappl     256      518    0      500     3     0     3     3     0     8    0
extentpl    40       45    0       27     1     0     1     1     0     8    0
phpool     112      568    0       49    15     0    15    15     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x19:        leave
x86_ipi_db(ffffffff853a2ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412
x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc
softintr_dispatch(0) at softintr_dispatch+0x215 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x7b sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
Xspllower() at Xspllower+0x10
rw_do_enter_read(ffff800001ae0108,0) at rw_do_enter_read+0x55d sys/kern/kern_rwlock.c:413
uvmfault_lookup(ffff80003972c440,0) at uvmfault_lookup+0x1a2 sys/uvm/uvm_fault.c:-1
uvm_fault_check(ffff80003972c440,ffff80003972c3e8,ffff80003972c3d8,0) at uvm_fault_check+0x43 sys/uvm/uvm_fault.c:693
uvm_fault(ffff800001ae0020,129000,0,2) at uvm_fault+0x1e7 sys/uvm/uvm_fault.c:627
kpageflttrap(ffff80003972c720,1293e0) at kpageflttrap+0x41e sys/arch/amd64/amd64/trap.c:283
kerntrap(ffff80003972c720) at kerntrap+0x1b6 sys/arch/amd64/amd64/trap.c:528
end trace frame: 0xffff80003972c7a0, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff853a2ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412
x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc
softintr_dispatch(0) at softintr_dispatch+0x215 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x7b sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
Xspllower() at Xspllower+0x10
rw_do_enter_read(ffff800001ae0108,0) at rw_do_enter_read+0x55d sys/kern/kern_rwlock.c:413
uvmfault_lookup(ffff80003972c440,0) at uvmfault_lookup+0x1a2 sys/uvm/uvm_fault.c:-1
uvm_fault_check(ffff80003972c440,ffff80003972c3e8,ffff80003972c3d8,0) at uvm_fault_check+0x43 sys/uvm/uvm_fault.c:693
uvm_fault(ffff800001ae0020,129000,0,2) at uvm_fault+0x1e7 sys/uvm/uvm_fault.c:627
kpageflttrap(ffff80003972c720,1293e0) at kpageflttrap+0x41e sys/arch/amd64/amd64/trap.c:283
kerntrap(ffff80003972c720) at kerntrap+0x1b6 sys/arch/amd64/amd64/trap.c:528
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyout() at copyout+0x59
syscall(ffff80003972cd10) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003972cd10) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4be03a1d4e0, count: -18
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x17:  popq    %rbp
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff846334c7) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load8_noabort(ffff8000352e42e0) at __asan_load8_noabort+0xde kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline]
__asan_load8_noabort(ffff8000352e42e0) at __asan_load8_noabort+0xde sys/kern/subr_kasan.c:1038
bioioctl(4f14,4004667b,ffff8000352e42e0,1,ffff800029923768) at bioioctl+0x130 sys/dev/bio.c:111
VOP_IOCTL(ffff80000183a560,4004667b,ffff8000352e42e0,1,ffff800000119340,ffff800029923768) at VOP_IOCTL+0x131 sys/kern/vfs_vops.c:264
vn_ioctl(ffff8000016a55a0,4004667b,ffff8000352e42e0,ffff800029923768) at vn_ioctl+0x18c sys/kern/vfs_vnops.c:537
sys_fcntl(ffff800029923768,ffff8000352e4560,ffff8000352e44c0) at sys_fcntl+0xbad sys/kern/kern_descrip.c:501
syscall(ffff8000352e4560) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff8000352e4560) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2057d0ec5f0, count: 6
ddb{1}> trace
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff846334c7) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load8_noabort(ffff8000352e42e0) at __asan_load8_noabort+0xde kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline]
__asan_load8_noabort(ffff8000352e42e0) at __asan_load8_noabort+0xde sys/kern/subr_kasan.c:1038
bioioctl(4f14,4004667b,ffff8000352e42e0,1,ffff800029923768) at bioioctl+0x130 sys/dev/bio.c:111
VOP_IOCTL(ffff80000183a560,4004667b,ffff8000352e42e0,1,ffff800000119340,ffff800029923768) at VOP_IOCTL+0x131 sys/kern/vfs_vops.c:264
vn_ioctl(ffff8000016a55a0,4004667b,ffff8000352e42e0,ffff800029923768) at vn_ioctl+0x18c sys/kern/vfs_vnops.c:537
sys_fcntl(ffff800029923768,ffff8000352e4560,ffff8000352e44c0) at sys_fcntl+0xbad sys/kern/kern_descrip.c:501
syscall(ffff8000352e4560) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff8000352e4560) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2057d0ec5f0, count: -9
ddb{1}> 
