suppressed report

suppressed report
Status: upstream: reported on 2021/02/21 15:56
Reported-by: syzbot+94b31fe1b87e0f693733@syzkaller.appspotmail.com
First crash: 49d, last: 18h40m

Sample crash report:

witness: lock order reversal:
 1st 0xfffffd80084ae468 vmmaplk (&map->lock)
 2nd 0xfffffd8069a43f80 inode (&ip->i_lock)
lock order "&ip->i_lock"(rrwlock) -> "&map->lock"(rwlock) first seen at:
#0  rw_enter_read+0x66 sys/kern/kern_rwlock.c:112
#1  uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1701
#2  uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674
#3  uvm_fault+0xe2 sys/uvm/uvm_fault.c:601
#4  kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265
#5  kerntrap+0xef sys/arch/amd64/amd64/trap.c:321
#6  alltraps_kern_meltdown+0x7b
#7  copyout+0x53
#8  ffs_read+0x3e2 sys/ufs/ffs/ffs_vnops.c:258
#9  VOP_READ+0xbf sys/kern/vfs_vops.c:253
#10 vn_rdwr+0x10b
#11 vmcmd_map_readvn+0xda sys/kern/exec_subr.c:246
#12 exec_process_vmcmds+0xb2 sys/kern/exec_subr.c:143
#13 sys_execve+0xa02 sys/kern/kern_exec.c:461
#14 start_init+0x2f9 sys/kern/init_main.c:752
#15 proc_trampoline+0x1c
lock order "&map->lock"(rwlock) -> "&ip->i_lock"(rrwlock) first seen at:
#0  rw_enter+0xd4
#1  rrw_enter+0x88 sys/kern/kern_rwlock.c:461
#2  VOP_LOCK+0x4b sys/kern/vfs_vops.c:614
#3  vn_lock+0x6c sys/kern/vfs_vnops.c:575
#4  uvn_get+0x276 uvm_vnode_lock sys/uvm/uvm_vnode.c:1499 [inline]
#4  uvn_get+0x276 sys/uvm/uvm_vnode.c:993
#5  uvm_fault_lower+0x302 sys/uvm/uvm_fault.c:1251
#6  uvm_fault+0x23e sys/uvm/uvm_fault.c:638
#7  uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1538
#8  uvm_map_pageable_wire+0x30d sys/uvm/uvm_map.c:2364
#9  sys_mlock+0x180 sys/uvm/uvm_mmap.c:772
#10 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#10 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590
#11 Xsyscall+0x128
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
ddb{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
the kernel did not panic
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
witness_checkorder(fffffd8069a43f80,9,0) at witness_checkorder+0x108b
rw_enter(fffffd8069a43f70,81) at rw_enter+0xd4
rrw_enter(fffffd8069a43f70,81) at rrw_enter+0x88 sys/kern/kern_rwlock.c:461
VOP_LOCK(fffffd806b1b7da8,81) at VOP_LOCK+0x4b sys/kern/vfs_vops.c:614
vn_lock(fffffd806b1b7da8,81) at vn_lock+0x6c sys/kern/vfs_vnops.c:575
uvn_get(fffffd806c7013b8,0,ffff8000222bec28,ffff8000222bebf8,0,4) at uvn_get+0x276 uvm_vnode_lock sys/uvm/uvm_vnode.c:1499 [inline]
uvn_get(fffffd806c7013b8,0,ffff8000222bec28,ffff8000222bebf8,0,4) at uvn_get+0x276 sys/uvm/uvm_vnode.c:993
uvm_fault_lower(ffff8000222bed90,ffff8000222bedc8,ffff8000222bed10,2) at uvm_fault_lower+0x302 sys/uvm/uvm_fault.c:1251
uvm_fault(fffffd80084ae450,20ff7000,2,4) at uvm_fault+0x23e sys/uvm/uvm_fault.c:638
uvm_fault_wire(fffffd80084ae450,20ff7000,20ff8000,4) at uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1538
uvm_map_pageable_wire(fffffd80084ae450,fffffd806c710df0,fffffd806c7112c0,530,ffffffff8236da0e,0) at uvm_map_pageable_wire+0x30d sys/uvm/uvm_map.c:2364
sys_mlock(ffff800021263a40,ffff8000222befd8,ffff8000222bf020) at sys_mlock+0x180 sys/uvm/uvm_mmap.c:772
syscall(ffff8000222bf0a0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000222bf0a0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x89d8f3ac680, count: -14
ddb{1}> show registers
rdi                              0x3
rsi                          0x40000    acpi_pdirpa+0x2be68
rbp               0xffff8000222be8b0
rbx                              0x3
rdx               0xffff800000afbc80
rcx                              0x3
rax                          0x3ffff    acpi_pdirpa+0x2be67
r8                0xffffffff8236b6a1    witness_checkorder+0x1061
r9                               0x5
r10               0x19ff41ed40d69060
r11               0x58f8795fd774027e
r12               0xffffffff82952ca0    w_lodata+0x546f0
r13               0xfffffd8069a43f80
r14               0xffffffff82945780    w_lodata+0x471d0
r15               0xfffffd8002cf1600
rip               0xffffffff81ecd5b8    db_enter+0x18
cs                               0x8
rflags                         0x246
rsp               0xffff8000222be8a0
ss                              0x10
db_enter+0x18:  addq    $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.0) pid=279844 stat=onproc
    flags process=0 proc=4000000<THREAD>
    pri=82, usrpri=82, nice=20
    forw=0xffffffffffffffff, list=0xffff800021262000,0xffff800021263270
    process=0xffff800021225d98 user=0xffff8000222ba000, vmspace=0xfffffd80084ae450
    estcpu=36, cpticks=0, pctcpu=0.0
    user=0, sys=0, intr=0
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 89112  406352  81948      0  3        0x80  nanoslp       syz-executor.0
*89112  279844  81948      0  7   0x4000000                syz-executor.0
 89112  402501  81948      0  3   0x4000080  fsleep        syz-executor.0
 60274  215534    586      0  2           0                syz-executor.1
 60274  336367    586      0  7   0x4000000                syz-executor.1
 60274  153798    586      0  2   0x4000000                syz-executor.1
   586  424071  62162      0  3        0x82  nanoslp       syz-executor.1
 81948   53404  62162      0  3        0x82  nanoslp       syz-executor.0
 62162  213097   8254      0  3        0x82  thrsleep      syz-fuzzer
 62162  328887   8254      0  3   0x4000082  thrsleep      syz-fuzzer
 62162  154634   8254      0  3   0x4000082  thrsleep      syz-fuzzer
 62162  281358   8254      0  3   0x4000082  kqread        syz-fuzzer
 62162   39135   8254      0  3   0x4000082  thrsleep      syz-fuzzer
 62162  252783   8254      0  3   0x4000082  thrsleep      syz-fuzzer
 62162   30005   8254      0  3   0x4000082  thrsleep      syz-fuzzer
 62162  338219   8254      0  3   0x4000082  thrsleep      syz-fuzzer
  8254   22413  30220      0  3    0x10008a  sigsusp       ksh
 30220  505185  38422      0  3        0x92  select        sshd
 31846  329694      1      0  3    0x100083  ttyin         getty
 38422  202133      1      0  3        0x80  select        sshd
 92886  505582  39674     74  3    0x100092  bpf           pflogd
 39674  442417      1      0  3        0x80  netio         pflogd
 44462  295439  94715     73  3    0x100090  kqread        syslogd
 94715   95492      1      0  3    0x100082  netio         syslogd
 84635  314328      1     77  3    0x100090  poll          dhclient
 82310  355241      1      0  3        0x80  poll          dhclient
 53121  347732      0      0  3     0x14200  bored         smr
 31563  358993      0      0  2     0x14200                zerothread
 27771    6642      0      0  3     0x14200  aiodoned      aiodoned
 64784  382314      0      0  3     0x14200  syncer        update
 53893   90045      0      0  3     0x14200  cleaner       cleaner
 96321  141310      0      0  3     0x14200  reaper        reaper
 42536  445818      0      0  3     0x14200  pgdaemon      pagedaemon
 36127  401417      0      0  3     0x14200  bored         crynlk
 17292  471719      0      0  3     0x14200  bored         crypto
  9818  174834      0      0  3     0x14200  bored         viomb
 21703  451152      0      0  3  0x40014200  acpi0         acpi0
 57295   75876      0      0  3  0x40014200                idle1
 94231  346144      0      0  3     0x14200  bored         softnet
 42446  370622      0      0  3     0x14200  bored         systqmp
 14792  233650      0      0  3     0x14200  bored         systq
 83611  521422      0      0  3  0x40014200  bored         softclock
 91237    8957      0      0  3  0x40014200                idle0
     1  205158      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{1}> show all locks
Process 89112 (syz-executor.0) thread 0xffff800021263a40 (279844)
shared rwlock vmmaplk r = 0 (0xfffffd80084ae468)
#0  witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0  witness_lock+0x4b0 sys/kern/subr_witness.c:1182
#1  rw_enter+0x416 sys/kern/kern_rwlock.c:310
#2  vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5424
#3  uvm_map_pageable+0x120 sys/uvm/uvm_map.c:2460
#4  sys_mlock+0x180 sys/uvm/uvm_mmap.c:772
#5  syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5  syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590
#6  Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828a1e90)
#0  witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0  witness_lock+0x4b0 sys/kern/subr_witness.c:1182
#1  syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline]
#1  syscall+0x3fd sys/arch/amd64/amd64/trap.c:590
#2  Xsyscall+0x128
Process 60274 (syz-executor.1) thread 0xffff8000212627e0 (153798)
exclusive rrwlock inode r = 0 (0xfffffd80692066f8)
#0  witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0  witness_lock+0x4b0 sys/kern/subr_witness.c:1182
#1  rw_enter+0x416 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x88 sys/kern/kern_rwlock.c:461
#3  ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140
#4  ffs_vget+0x135 sys/ufs/ffs/ffs_vfsops.c:1350
#5  ffs_inode_alloc+0x1e1 sys/ufs/ffs/ffs_alloc.c:394
#6  ufs_makeinode+0xaa sys/ufs/ufs/ufs_vnops.c:1830
#7  ufs_create+0x41 sys/ufs/ufs/ufs_vnops.c:152
#8  VOP_CREATE+0xc0 sys/kern/vfs_vops.c:112
#9  vn_open+0x2b0 sys/kern/vfs_vnops.c:122
#10 doopenat+0x279 sys/kern/vfs_syscalls.c:1138
#11 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#11 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590
#12 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806e2e6f78)
#0  witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0  witness_lock+0x4b0 sys/kern/subr_witness.c:1182
#1  rw_enter+0x416 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x88 sys/kern/kern_rwlock.c:461
#3  VOP_LOCK+0x4b sys/kern/vfs_vops.c:614
#4  vn_lock+0x6c sys/kern/vfs_vnops.c:575
#5  vfs_lookup+0xe6 sys/kern/vfs_lookup.c:413
#6  namei+0x58a sys/kern/vfs_lookup.c:245
#7  vn_open+0x1a3 sys/kern/vfs_vnops.c:113
#8  doopenat+0x279 sys/kern/vfs_syscalls.c:1138
#9  syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#9  syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590
#10 Xsyscall+0x128
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf  9486   6424K    6685K  78643K     20127        0
            pcb    13      8K       8K  78643K      2451        0
         rtable   105      3K       3K  78643K       489        0
         ifaddr    44     10K      10K  78643K        95        0
       counters    44     34K      34K  78643K        58        0
       ioctlops     0      0K       4K  78643K      2236        0
            iov     0      0K       8K  78643K       577        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         1        0
         vnodes  1223     77K      77K  78643K      6146        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     2      1K       9K  78643K       481        0
         VM map     2      1K       1K  78643K         2        0
            sem    12      0K       0K  78643K       204        0
        dirhash    12      2K       2K  78643K        12        0
           ACPI  1697    195K     286K  78643K     12598        0
      file desc     6     17K      25K  78643K     29315        0
          sigio     0      0K       0K  78643K       273        0
           proc    60     63K      95K  78643K       718        0
        subproc    32      2K       2K  78643K       153        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
       in_multi    33      2K       2K  78643K       110        0
    ether_multi     1      0K       0K  78643K         1        0
    ISOFS mount     1     32K      32K  78643K         1        0
  MSDOSFS mount     1     16K      16K  78643K         1        0
           ttys    43    201K     201K  78643K        43        0
           exec     0      0K       2K  78643K       524        0
        pagedep     1      8K       8K  78643K         1        0
       inodedep     1     32K      32K  78643K         1        0
         newblk     1      0K       0K  78643K         1        0
        VM swap     7     26K      26K  78643K         7        0
       UVM amap   213     25K      26K  78643K    350716        0
       UVM aobj   131      4K       4K  78643K       131        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
            NDP     6      0K       0K  78643K        31        0
           temp   105   3977K    4045K  78643K    200381        0
         kqueue     3      4K       8K  78643K        22        0
      SYN cache     2     16K      16K  78643K         2        0
ddb{1}> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp         64       20    0       14     1     0     1     1     0     8    0
plcache    128       20    0        0     1     0     1     1     0     8    0
rtpcb      120       33    0       31     1     0     1     1     0     8    0
rtentry    112      122    0       78     2     0     2     2     0     8    0
unpcb      120     4015    0     4005     1     0     1     1     0     8    0
syncache   296        4    0        4     1     1     0     1     0     8    0
tcpcb      736       31    0       27     2     1     1     2     0     8    0
inpcb      304     2769    0     2763     1     0     1     1     0     8    0
nd6         48       27    0       21     1     0     1     1     0     8    0
kcovpl      48        9    0        7     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       22    0       20     1     0     1     1     0     8    0
pfstkey    112       22    0       20     1     0     1     1     0     8    0
pfstate    320       22    0       20     1     0     1     1     0     8    0
pfrule     1360      21    0       16     2     1     1     2     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256      497    0      308    12     0    12    12     0     8    0
art_table   32      498    0      308     2     0     2     2     0     8    0
art_node    16      121    0       81     1     0     1     1     0     8    0
semapl     112      202    0      192     1     0     1     1     0     8    0
shmpl      112      128    0        0     4     0     4     4     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256    38304    0    36852    93     2    91    92     0     8    0
ffsino     272    38304    0    36852    98     1    97    98     0     8    0
nchpl      144    84445    0    82848    60     0    60    60     0     8    0
uvmvnodes   72     5926    0        0   108     0   108   108     0     8    0
vnodes     224     5926    0        0   349     0   349   349     0     8    0
namei      1024  198275    0   198274     1     0     1     1     0     8    0
percpumem   16       40    0        7     1     0     1     1     0     8    0
scxspl     216   204702    0   204702     9     8     1     8     0     8    1
plimitpl   152       22    0       14     1     0     1     1     0     8    0
sigapl     424    29509    0    29476     4     0     4     4     0     8    0
futexpl     56   138457    0   138456     1     0     1     1     0     8    0
knotepl    112      165    0      145     1     0     1     1     0     8    0
kqueuepl   168      782    0      780     1     0     1     1     0     8    0
pipepl     336     8210    0     8199    30    28     2     3     0     8    1
fdescpl    496    29493    0    29476     3     0     3     3     0     8    0
filepl     152    94335    0    94232    16    11     5     6     0     8    1
lockfpl    104     4462    0     4461     1     0     1     1     0     8    0
lockfspl    48     1572    0     1571     1     0     1     1     0     8    0
sessionpl  144       25    0       14     1     0     1     1     0     8    0
pgrppl      48      145    0      134     1     0     1     1     0     8    0
ucredpl     96     6349    0     6339     1     0     1     1     0     8    0
zombiepl   144    29476    0    29476     1     0     1     1     0     8    1
processpl  1080   29509    0    29476     3     0     3     3     0     8    0
procpl     672    64581    0    64537     4     0     4     4     0     8    0
sockpl     432     6817    0     6799     3     0     3     3     0     8    0
mcl64k     65536     13    0        0     2     0     2     2     0     8    0
mcl16k     16384      2    0        0     1     0     1     1     0     8    0
mcl12k     12288     34    0        0     2     0     2     2     0     8    0
mcl9k      9216      18    0        0     2     0     2     2     0     8    0
mcl8k      8192      19    0        0     3     1     2     3     0     8    0
mcl4k      4096      17    0        0     3     0     3     3     0     8    0
mcl2k2     2112       6    0        0     1     0     1     1     0     8    0
mcl2k      2048     113    0        0    10     0    10    10     0     8    0
mtagpl      96        1    0        0     1     0     1     1     0     8    0
mbufpl     256     1070    0        0    16     7     9    16     0     8    0
bufpl      280    34241    0    27975   448     0   448   448     0     8    0
anonpl      24  7425337    0  7418915    77    36    41    51     0   186    0
amapchunkpl 152  831465    0   831072    56    40    16    20     0   158    0
amappl16   200    54208    0    54055    10     1     9     9     0     8    0
amappl15   192      162    0      155     1     0     1     1     0     8    0
amappl14   184       10    0        8     1     0     1     1     0     8    0
amappl13   176       72    0       69     1     0     1     1     0     8    0
amappl12   168     2436    0     2427     1     0     1     1     0     8    0
amappl11   160     3115    0     3101     1     0     1     1     0     8    0
amappl10   152     6371    0     6365     1     0     1     1     0     8    0
amappl9    144    10344    0    10340     3     2     1     1     0     8    0
amappl8    136    15167    0    15094     6     3     3     3     0     8    0
amappl7    128    10151    0    10138     1     0     1     1     0     8    0
amappl6    120     6523    0     6505     1     0     1     1     0     8    0
amappl5    112    29336    0    29324     1     0     1     1     0     8    0
amappl4    104     6345    0     6319     1     0     1     1     0     8    0
amappl3     96     1040    0     1036     1     0     1     1     0     8    0
amappl2     88      959    0      908     2     0     2     2     0     8    0
amappl1     80   482718    0   482281    12     2    10    12     0     8    0
amappl      88   349780    0   349650     3     0     3     3     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      64      130    0        0     3     0     3     3     0     8    0
uaddrrnd    24    29493    0    29476     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24    29493    0    29476     1     0     1     1     0     8    0
vmmpekpl   168   147350    0   147320     2     0     2     2     0     8    0
vmmpepl    168  3217752    0  3216223    90    23    67    73     0   357    0
vmsppl     368    29492    0    29476     2     0     2     2     0     8    0
rwobjpl     56   540497    0   539611    29    16    13    13     0     8    0
pdppl      4096   58993    0    58952    58    17    41    45     0     8    0
pvpl        32 12579279    0 12569347   278   195    83   129     0   265    0
pmappl     232    29492    0    29476     3     2     1     2     0     8    0
extentpl    40       58    0       40     1     0     1     1     0     8    0
phpool     112      340    0       60     9     0     9     9     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x1a:        addq    $0x8,%rsp
ddb{0}> trace
x86_ipi_db(ffffffff826f5ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x25 kd_curproc sys/dev/kcov.c:559 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x25 sys/dev/kcov.c:143
__mp_lock(ffffffff828a1c88) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff828a1c88) at __mp_lock+0x133 sys/kern/kern_lock.c:147
intr_handler(ffff8000252e7120,ffff800000668080) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge4_untramp() at Xintr_ioapic_edge4_untramp+0x18f
__mp_lock(ffffffff828a1c88) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff828a1c88) at __mp_lock+0x122 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x1f
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x17 kd_curproc sys/dev/kcov.c:559 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x17 sys/dev/kcov.c:143
__mp_lock(ffffffff828a1c88) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff828a1c88) at __mp_lock+0x133 sys/kern/kern_lock.c:147
upageflttrap(ffff8000252e7430,3bf73629000) at upageflttrap+0x77 sys/arch/amd64/amd64/trap.c:180
usertrap(ffff8000252e7430) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:406
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x3bfc773d300, count: -15
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
witness_checkorder(fffffd8069a43f80,9,0) at witness_checkorder+0x108b
rw_enter(fffffd8069a43f70,81) at rw_enter+0xd4
rrw_enter(fffffd8069a43f70,81) at rrw_enter+0x88 sys/kern/kern_rwlock.c:461
VOP_LOCK(fffffd806b1b7da8,81) at VOP_LOCK+0x4b sys/kern/vfs_vops.c:614
vn_lock(fffffd806b1b7da8,81) at vn_lock+0x6c sys/kern/vfs_vnops.c:575
uvn_get(fffffd806c7013b8,0,ffff8000222bec28,ffff8000222bebf8,0,4) at uvn_get+0x276 uvm_vnode_lock sys/uvm/uvm_vnode.c:1499 [inline]
uvn_get(fffffd806c7013b8,0,ffff8000222bec28,ffff8000222bebf8,0,4) at uvn_get+0x276 sys/uvm/uvm_vnode.c:993
uvm_fault_lower(ffff8000222bed90,ffff8000222bedc8,ffff8000222bed10,2) at uvm_fault_lower+0x302 sys/uvm/uvm_fault.c:1251
uvm_fault(fffffd80084ae450,20ff7000,2,4) at uvm_fault+0x23e sys/uvm/uvm_fault.c:638
uvm_fault_wire(fffffd80084ae450,20ff7000,20ff8000,4) at uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1538
uvm_map_pageable_wire(fffffd80084ae450,fffffd806c710df0,fffffd806c7112c0,530,ffffffff8236da0e,0) at uvm_map_pageable_wire+0x30d sys/uvm/uvm_map.c:2364
sys_mlock(ffff800021263a40,ffff8000222befd8,ffff8000222bf020) at sys_mlock+0x180 sys/uvm/uvm_mmap.c:772
syscall(ffff8000222bf0a0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000222bf0a0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x89d8f3ac680, count: -14

Crashes (297):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Title
ci-openbsd-multicore	2021/04/10 22:00	openbsd	65872839	bfeda1b1	.config	log	report	suppressed report
ci-openbsd-multicore	2021/04/10 20:35	openbsd	65872839	bfeda1b1	.config	log	report	suppressed report
ci-openbsd-multicore	2021/04/09 23:46	openbsd	2edea3cb	6a81331a	.config	log	report	suppressed report
ci-openbsd-multicore	2021/04/09 20:36	openbsd	293988a7	6a81331a	.config	log	report	suppressed report
ci-openbsd-setuid	2021/04/06 18:33	openbsd	76513051	6a81331a	.config	log	report	suppressed report
ci-openbsd-multicore	2021/04/05 04:56	openbsd	1b3c96db	6a81331a	.config	log	report	suppressed report
ci-openbsd-setuid	2021/04/04 03:16	openbsd	ab86b902	6a81331a	.config	log	report	suppressed report
ci-openbsd-setuid	2021/04/03 17:08	openbsd	beb64842	6a81331a	.config	log	report	suppressed report
ci-openbsd-multicore	2021/04/02 21:17	openbsd	fdbc0723	6a81331a	.config	log	report	suppressed report
ci-openbsd-multicore	2021/04/02 00:11	openbsd	e06d60dd	6a81331a	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/29 06:23	openbsd	1e3e204a	a8529b82	.config	log	report	suppressed report
ci-openbsd-setuid	2021/03/28 09:02	openbsd	67ac4347	a8529b82	.config	log	report	suppressed report
ci-openbsd-setuid	2021/03/28 01:07	openbsd	67ac4347	a8529b82	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/27 12:14	openbsd	6ad82394	a8529b82	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/26 05:49	openbsd	ef122b21	6a383ecf	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/25 20:07	openbsd	2a70c749	6a383ecf	.config	log	report	suppressed report
ci-openbsd-main	2021/03/25 02:48	openbsd	2a70c749	607e3baf	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/24 13:46	openbsd	8565b6d4	607e3baf	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/24 04:47	openbsd	d2bbcd09	e613994b	.config	log	report	suppressed report
ci-openbsd-setuid	2021/03/23 17:27	openbsd	8d36f12d	e613994b	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/23 15:42	openbsd	8d36f12d	e613994b	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/23 07:30	openbsd	29ec4e84	8092f30d	.config	log	report	suppressed report
ci-openbsd-main	2021/03/22 19:33	openbsd	e7e8e562	8092f30d	.config	log		suppressed report
ci-openbsd-multicore	2021/03/22 18:03	openbsd	e7e8e562	8092f30d	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/22 15:54	openbsd	e7e8e562	bea32f74	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/22 02:34	openbsd	27e46ee6	bea32f74	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/21 14:06	openbsd	b69b24c5	4c9a64da	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/20 21:54	openbsd	f7cbc8fb	17810eae	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/20 09:34	openbsd	b05f14bc	e45f5621	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/20 01:28	openbsd	104cbbca	3d01c4de	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/19 21:32	openbsd	104cbbca	3d01c4de	.config	log	report	suppressed report
ci-openbsd-setuid	2021/03/19 16:45	openbsd	38c12d68	2af9d324	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/19 16:34	openbsd	38c12d68	2af9d324	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/19 13:10	openbsd	38c12d68	2af9d324	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/19 09:33	openbsd	38c12d68	2af9d324	.config	log	report	suppressed report
ci-openbsd-main	2021/03/19 00:37	openbsd	b4b44feb	380dcc3e	.config	log		suppressed report
ci-openbsd-multicore	2021/03/18 21:31	openbsd	b4b44feb	380dcc3e	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/17 19:27	openbsd	d6cbd19b	fdb2bb2c	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/17 09:30	openbsd	8a40bc3f	fdb2bb2c	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/17 06:14	openbsd	8a40bc3f	fdb2bb2c	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/16 17:05	openbsd	552b34ae	fdb2bb2c	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/14 10:10	openbsd	3746f1b0	4a003785	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/13 03:59	openbsd	e0c535b7	c2ca1f2a	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/12 06:40	openbsd	97154466	c2ca1f2a	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/11 17:20	openbsd	6518e92a	c2ca1f2a	.config	log	report	suppressed report
ci-openbsd-setuid	2021/03/11 11:35	openbsd	71a585ed	c2ca1f2a	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/11 04:07	openbsd	71a585ed	c2ca1f2a	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/10 15:56	openbsd	7d602836	764067f3	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/10 07:41	openbsd	bfe81f2d	26967e35	.config	log	report	suppressed report
ci-openbsd-multicore	2021/03/09 16:48	openbsd	4d62617a	26967e35	.config	log	report	suppressed report
ci-openbsd-multicore	2021/02/21 15:55	openbsd	11bb5c24	a659b3f1	.config	log	report	suppressed report