syzbot


assert "uvn->u_obj.uo_refs == NUM" failed in uvm_vnode.c

Status: fixed on 2022/08/31 23:31
Reported-by: syzbot+dd2d2684ad2818c927da@syzkaller.appspotmail.com
Fix commit: ce1ab8dd6b18 Lock vmobjlock then check u_flags & UVM_VNODE_VALID in uvn_attach
First crash: 156d, last: 105d
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd assert "uvn->u_obj.uo_refs == NUM" failed in uvm_vnode.c (2) syz 2 58d 59d 0/3 upstream: reported syz repro on 2022/10/05 00:21
Patch testing requests:
Created Duration User Patch Repo Result
2022/08/30 11:19 14m greg@nest.cx https://github.com/blackgnezdo/openbsd-src.git 3871b827e4a OK log

Sample crash report:
panic: kernel diagnostic assertion "uvn->u_obj.uo_refs == 0" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_vnode.c", line 234
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 377908  39095  32767        0x10          0    0  syz-executor.3
* 32128  39095  32767        0x10  0x4000000    1K syz-executor.3
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff825a14e6) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff82617e14,ffffffff82639607,ea,ffffffff826320a6) at __assert+0x25 sys/kern/subr_prf.c:157
uvn_attach(fffffd806a846368,6) at uvn_attach+0x444 sys/uvm/uvm_vnode.c:234
uvm_mmapfile(fffffd8075116468,ffff8000214b75e8,10000,2,6,11,eb3fbe5eda94103,fffffd8075116468,0,11) at uvm_mmapfile+0x194 sys/uvm/uvm_mmap.c:1029
sys_mmap(ffff800021431a40,ffff8000214b7690,ffff8000214b7760) at sys_mmap+0xb4a sys/uvm/uvm_mmap.c:395
sys_pad_mmap(ffff800021431a40,ffff8000214b7718,ffff8000214b7760) at sys_pad_mmap+0x68 sys/uvm/uvm_mmap.c:470
syscall(ffff8000214b77e0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff8000214b77e0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb0b6ce60f0, count: 6
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports.  Insufficient info makes it difficult to find and fix bugs.
ddb{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: kernel diagnostic assertion "uvn->u_obj.uo_refs == 0" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_vnode.c", line 234
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff825a14e6) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff82617e14,ffffffff82639607,ea,ffffffff826320a6) at __assert+0x25 sys/kern/subr_prf.c:157
uvn_attach(fffffd806a846368,6) at uvn_attach+0x444 sys/uvm/uvm_vnode.c:234
uvm_mmapfile(fffffd8075116468,ffff8000214b75e8,10000,2,6,11,eb3fbe5eda94103,fffffd8075116468,0,11) at uvm_mmapfile+0x194 sys/uvm/uvm_mmap.c:1029
sys_mmap(ffff800021431a40,ffff8000214b7690,ffff8000214b7760) at sys_mmap+0xb4a sys/uvm/uvm_mmap.c:395
sys_pad_mmap(ffff800021431a40,ffff8000214b7718,ffff8000214b7760) at sys_pad_mmap+0x68 sys/uvm/uvm_mmap.c:470
syscall(ffff8000214b77e0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff8000214b77e0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb0b6ce60f0, count: -9
ddb{1}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff8000214b7280
rbx               0xffff800020dd9b8f
rdx                            0x3fd
rcx                                0
rax                             0x8c
r8                 0x101010101010101
r9                0x8080808080808080
r10               0x53a6e73c142fc0ad
r11                0x5354521a400ba36
r12               0xffff800020dd9990
r13                                0
r14                                0
r15                              0x1
rip               0xffffffff81a81af8    db_enter+0x18
cs                               0x8
rflags                         0x246
rsp               0xffff8000214b7270
ss                              0x10
db_enter+0x18:  addq    $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.3) pid=32128 stat=onproc
    flags process=10<SUGID> proc=4000000<THREAD>
    pri=32, usrpri=86, nice=20
    forw=0xffffffffffffffff, list=0xffff80002144cd30,0xffff800021430010
    process=0xffff8000213ee580 user=0xffff8000214b2000, vmspace=0xfffffd8075116468
    estcpu=36, cpticks=3, pctcpu=0.0
    user=0, sys=2, intr=0
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 96267  244397    213  32767  2        0x10                syz-executor.1
 96267  479036    213  32767  3   0x4000090  fsleep        syz-executor.1
 39095  377908  73774  32767  7        0x10                syz-executor.3
*39095   32128  73774  32767  7   0x4000010                syz-executor.3
 39095  194576  73774  32767  2   0x4000010                syz-executor.3
  9254  209200  24248  32767  3        0x90  nanoslp       syz-executor.2
 99746  390134  62618  32767  3        0x90  piperd        syz-executor.4
 88247  379916  41211  32767  3        0x90  nanoslp       syz-executor.7
 62618   54489  45294      0  3        0x82  wait          syz-executor.4
 41211  195551  45294      0  3        0x82  wait          syz-executor.7
 24248  483309  45294      0  3        0x82  wait          syz-executor.2
 67012   30210  58685  32767  3        0x90  piperd        syz-executor.5
 58685  292266  45294      0  3        0x82  wait          syz-executor.5
 73774  224175   6294  32767  3        0x90  nanoslp       syz-executor.3
  6294  471428  45294      0  3        0x82  wait          syz-executor.3
 84466  476437  83518  32767  3        0x90  piperd        syz-executor.6
   213    8214  81150  32767  3        0x90  nanoslp       syz-executor.1
 83518  355812  45294      0  3        0x82  wait          syz-executor.6
 81150  261206  45294      0  3        0x82  wait          syz-executor.1
 81640  197330  22877  32767  3        0x90  nanoslp       syz-executor.0
 22877   36743  45294      0  3        0x82  wait          syz-executor.0
 45294  514530  14963      0  3        0x82  wait          syz-execprog
 45294   40024  14963      0  3   0x4000082  nanoslp       syz-execprog
 45294   25152  14963      0  3   0x4000082  wait          syz-execprog
 45294  270441  14963      0  3   0x4000082  thrsleep      syz-execprog
 45294  332690  14963      0  3   0x4000082  wait          syz-execprog
 45294  130534  14963      0  3   0x4000082  wait          syz-execprog
 45294  304769  14963      0  3   0x4000082  thrsleep      syz-execprog
 45294  523562  14963      0  3   0x4000082  thrsleep      syz-execprog
 45294  280230  14963      0  3   0x4000082  wait          syz-execprog
 45294    5997  14963      0  3   0x4000082  wait          syz-execprog
 45294  361879  14963      0  3   0x4000082  wait          syz-execprog
 45294  443179  14963      0  3   0x4000082  wait          syz-execprog
 45294  304138  14963      0  3   0x4000082  nanoslp       syz-execprog
 45294   42535  14963      0  3   0x4000082  thrsleep      syz-execprog
 45294  468688  14963      0  3   0x4000082  kqread        syz-execprog
 45294  162890  14963      0  3   0x4000082  thrsleep      syz-execprog
 14963  124974  22256      0  3    0x10008a  sigsusp       ksh
 22256   62926  15483      0  3        0x9a  kqread        sshd
 76690  273511      1      0  3    0x100083  ttyin         getty
 15483   46132      1      0  3        0x88  kqread        sshd
 79021  297233  65991     73  3   0x1100090  kqread        syslogd
 65991    1484      1      0  3    0x100082  netio         syslogd
 68249  176392      1      0  3    0x100080  kqread        resolvd
 35648  196692  70132     77  3    0x100092  kqread        dhcpleased
 39461  328446  70132     77  3    0x100092  kqread        dhcpleased
 70132   30344      1      0  3        0x80  kqread        dhcpleased
 17500   74966      0      0  3     0x14200  bored         smr
 14863   90414      0      0  3     0x14200  pgzero        zerothread
 53785  510621      0      0  3     0x14200  aiodoned      aiodoned
 91279  279798      0      0  3     0x14200  syncer        update
 79991  503344      0      0  3     0x14200  cleaner       cleaner
 47483  463471      0      0  3     0x14200  reaper        reaper
 65628  109682      0      0  3     0x14200  pgdaemon      pagedaemon
 63136   34679      0      0  3     0x14200  bored         viomb
 52396  192132      0      0  3  0x40014200  acpi0         acpi0
 46177  350009      0      0  3  0x40014200                idle1
 58721  171989      0      0  3     0x14200  bored         softnet
  2772  384124      0      0  3     0x14200  bored         softnet
 81382  252356      0      0  3     0x14200  bored         softnet
 69457  330885      0      0  3     0x14200  bored         softnet
 65533  524122      0      0  3     0x14200  bored         systqmp
  4723   58190      0      0  3     0x14200  bored         systq
 62305  300450      0      0  3  0x40014200  bored         softclock
    94  299189      0      0  3  0x40014200                idle0
     1  330821      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{1}> show all locks
Process 39095 (syz-executor.3) thread 0xffff800021431a40 (32128)
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82a00740)
#0  witness_lock+0x44d
#1  syscall+0x41d mi_syscall sys/sys/syscall_mi.h:100 [inline]
#1  syscall+0x41d sys/arch/amd64/amd64/trap.c:585
#2  Xsyscall+0x128
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10173   6407K    6419K  78643K     11263        0
            pcb    13      8K       8K  78643K        13        0
         rtable   234      6K       6K  78643K       351        0
         ifaddr    82     16K      16K  78643K        84        0
       counters    56     35K      35K  78643K        56        0
       ioctlops     0      0K       2K  78643K        33        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         4        0
         vnodes  1166     73K      73K  78643K      1179        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     2      1K       1K  78643K         2        0
         VM map     2      1K       1K  78643K         2        0
            sem     2      0K       0K  78643K         2        0
        dirhash    12      2K       2K  78643K        12        0
           ACPI  1697    195K     286K  78643K     12548        0
      file desc    20     73K     121K  78643K      1304        0
           proc    56     78K     103K  78643K       451        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
       in_multi    99      6K       6K  78643K        99        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    25    122K     122K  78643K        25        0
           exec     0      0K       2K  78643K       627        0
            tdb     3      0K       0K  78643K         3        0
        pagedep     1      8K       8K  78643K         1        0
       inodedep     1     32K      32K  78643K         1        0
         newblk     1      0K       0K  78643K         1        0
        VM swap     8     62K      62K  78643K         8        0
       UVM amap   180     90K     104K  78643K      9649        0
       UVM aobj     3      2K       2K  78643K         3        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
            NDP    11      0K       2K  78643K        27        0
           temp    51   4710K    4774K  78643K      5684        0
         kqueue    12     18K      18K  78643K        25        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
plcache    128       22    0        0     1     0     1     1     0     8    0
rtpcb      120       37    0       34     1     0     1     1     0     8    0
rtentry    112      111    0        1     4     0     4     4     0     8    0
unpcb      144       33    0       20     1     0     1     1     0     8    0
syncache   296        5    0        5     2     2     0     1     0     8    0
tcpcb      768        8    0        5     1     0     1     1     0     8    0
arp        120       18    0        0     1     0     1     1     0     8    0
inpcb      320       57    0       51     1     0     1     1     0     8    0
nd6         48       24    0        0     1     0     1     1     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   32      453    0        0     4     0     4     4     0     8    0
art_node    16      110    0       10     1     0     1     1     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256     3789    0     2355    90     0    90    90     0     8    0
ffsino     272     3789    0     2355    96     0    96    96     0     8    0
nchpl      144     6366    0     4692    63     0    63    63     0     8    0
uvmvnodes   80     3798    0        0    78     0    78    78     0     8    0
vnodes     216     3798    0        0   211     0   211   211     0     8    0
namei      1024   90937    0    90937     3     2     1     2     0     8    1
percpumem   16       40    0        0     1     0     1     1     0     8    0
kstatmem   264       22    0        0     2     0     2     2     0     8    0
scxspl     216    15977    0    15977    22    21     1     8     0     8    1
plimitpl   152       31    0        9     1     0     1     1     0     8    0
sigapl     424     1599    0     1548     7     0     7     7     0     8    0
futexpl     64     6540    0     6539     1     0     1     1     0     8    0
knotepl    120      106    0        0     4     0     4     4     0     8    0
kqueuepl   216       21    0       13     1     0     1     1     0     8    0
pipepl     320      131    0      103     4     1     3     3     0     8    0
fdescpl    496     1582    0     1551     7     2     5     6     0     8    0
filepl     152    80878    0    80748    13     0    13    13     0     8    7
lockfpl    104     2316    0     2312     1     0     1     1     0     8    0
lockfspl    48     1160    0     1156     1     0     1     1     0     8    0
sessionpl  144       25    0        9     1     0     1     1     0     8    0
pgrppl      48       25    0        9     1     0     1     1     0     8    0
ucredpl    104       88    0       70     1     0     1     1     0     8    0
zombiepl   144     1551    0     1548     2     1     1     1     0     8    0
processpl  1064    1599    0     1548     5     1     4     5     0     8    0
procpl     672     3391    0     3322     7     0     7     7     0     8    0
sockpl     488      127    0      105     4     1     3     4     0     8    0
mcl8k      8192       2    0        0     1     0     1     1     0     8    0
mcl4k      4096       4    0        0     1     0     1     1     0     8    0
mcl2k      2048      73    0        0    10     1     9     9     0     8    0
mtagpl      96        1    0        0     1     0     1     1     0     8    0
mbufpl     256      281    0        0    17     0    17    17     0     8    0
bufpl      288     4668    0      127   325     0   325   325     0     8    0
anonpl      24   242385    0   237284    46     9    37    40     0   186    0
amapchunkpl 152  232681    0   231894    56     1    55    55     0   158   24
amappl16   200     2531    0     2427     8     1     7     7     0     8    0
amappl15   192      393    0      386     1     0     1     1     0     8    0
amappl14   184      328    0      322     1     0     1     1     0     8    0
amappl13   176      386    0      382     2     1     1     1     0     8    0
amappl12   168       14    0        8     1     0     1     1     0     8    0
amappl11   160       82    0       68     1     0     1     1     0     8    0
amappl10   152       14    0       14     1     1     0     1     0     8    0
amappl9    144      730    0      723     1     0     1     1     0     8    0
amappl8    136      687    0      647     3     1     2     2     0     8    0
amappl7    128      285    0      264     1     0     1     1     0     8    0
amappl6    120      469    0      456     2     1     1     2     0     8    0
amappl5    112      973    0      956     1     0     1     1     0     8    0
amappl4    104      989    0      959     2     0     2     2     0     8    0
amappl3     96     4063    0     4010     2     0     2     2     0     8    0
amappl2     88      723    0      687     2     1     1     2     0     8    0
amappl1     80    40282    0    39624    21     4    17    19     0     8    0
amappl      88     9207    0     9084     5     1     4     4     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        2    0        0     1     0     1     1     0     8    0
uaddrrnd    24     1582    0     1551     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     1582    0     1551     1     0     1     1     0     8    0
vmmpekpl   168    15423    0    15387     2     0     2     2     0     8    0
vmmpepl    168   211382    0   209488   110     6   104   104     0   357    8
vmsppl     368     1581    0     1551     4     0     4     4     0     8    0
rwobjpl     56    40775    0    36018    69     0    69    69     0     8    0
pdppl      4096    3171    0     3102   123    42    81    93     0     8   12
pvpl        32   574215    0   564782   252    21   231   245     0   265  143
pmappl     248     1581    0     1551     4     1     3     3     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112      706    0       47    19     0    19    19     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x1a:        addq    $0x8,%rsp
x86_ipi_db(ffffffff8294aff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82a00538) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82a00538) at __mp_lock+0x122 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x1f
__mp_lock(ffffffff82a00538) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82a00538) at __mp_lock+0x122 sys/kern/kern_lock.c:147
syscall(ffff800021487b30) at syscall+0x41d mi_syscall sys/sys/syscall_mi.h:100 [inline]
syscall(ffff800021487b30) at syscall+0x41d sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc6850, count: 6
ddb{0}> trace
x86_ipi_db(ffffffff8294aff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82a00538) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82a00538) at __mp_lock+0x122 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x1f
__mp_lock(ffffffff82a00538) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82a00538) at __mp_lock+0x122 sys/kern/kern_lock.c:147
syscall(ffff800021487b30) at syscall+0x41d mi_syscall sys/sys/syscall_mi.h:100 [inline]
syscall(ffff800021487b30) at syscall+0x41d sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc6850, count: -9
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff825a14e6) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff82617e14,ffffffff82639607,ea,ffffffff826320a6) at __assert+0x25 sys/kern/subr_prf.c:157
uvn_attach(fffffd806a846368,6) at uvn_attach+0x444 sys/uvm/uvm_vnode.c:234
uvm_mmapfile(fffffd8075116468,ffff8000214b75e8,10000,2,6,11,eb3fbe5eda94103,fffffd8075116468,0,11) at uvm_mmapfile+0x194 sys/uvm/uvm_mmap.c:1029
sys_mmap(ffff800021431a40,ffff8000214b7690,ffff8000214b7760) at sys_mmap+0xb4a sys/uvm/uvm_mmap.c:395
sys_pad_mmap(ffff800021431a40,ffff8000214b7718,ffff8000214b7760) at sys_pad_mmap+0x68 sys/uvm/uvm_mmap.c:470
syscall(ffff8000214b77e0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff8000214b77e0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb0b6ce60f0, count: 6
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff825a14e6) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff82617e14,ffffffff82639607,ea,ffffffff826320a6) at __assert+0x25 sys/kern/subr_prf.c:157
uvn_attach(fffffd806a846368,6) at uvn_attach+0x444 sys/uvm/uvm_vnode.c:234
uvm_mmapfile(fffffd8075116468,ffff8000214b75e8,10000,2,6,11,eb3fbe5eda94103,fffffd8075116468,0,11) at uvm_mmapfile+0x194 sys/uvm/uvm_mmap.c:1029
sys_mmap(ffff800021431a40,ffff8000214b7690,ffff8000214b7760) at sys_mmap+0xb4a sys/uvm/uvm_mmap.c:395
sys_pad_mmap(ffff800021431a40,ffff8000214b7718,ffff8000214b7760) at sys_pad_mmap+0x68 sys/uvm/uvm_mmap.c:470
syscall(ffff8000214b77e0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff8000214b77e0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb0b6ce60f0, count: -9

Crashes (8):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-openbsd-setuid 2022/08/20 00:30 openbsd 24b6f6bc8d78 26a13b38 .config log report syz assert "uvn->u_obj.uo_refs == NUM" failed in uvm_vnode.c
ci-openbsd-setuid 2022/08/14 09:05 openbsd 7365c3921944 8dfcaa3d .config log report syz assert "uvn->u_obj.uo_refs == NUM" failed in uvm_vnode.c
ci-openbsd-setuid 2022/08/19 23:33 openbsd 24b6f6bc8d78 26a13b38 .config log report assert "uvn->u_obj.uo_refs == NUM" failed in uvm_vnode.c
ci-openbsd-setuid 2022/08/14 08:50 openbsd 7365c3921944 8dfcaa3d .config log report assert "uvn->u_obj.uo_refs == NUM" failed in uvm_vnode.c
ci-openbsd-setuid 2022/07/11 14:40 openbsd ac81be68d2e6 f3f217ff .config log report assert "uvn->u_obj.uo_refs == NUM" failed in uvm_vnode.c
ci-openbsd-setuid 2022/07/09 17:14 openbsd 9c847fa89616 b5765a15 .config log report assert "uvn->u_obj.uo_refs == NUM" failed in uvm_vnode.c
ci-openbsd-setuid 2022/07/07 10:43 openbsd df46652d2c3c bff65f44 .config log report assert "uvn->u_obj.uo_refs == NUM" failed in uvm_vnode.c
ci-openbsd-setuid 2022/06/29 14:13 openbsd acb1415e3c0a 1434eec0 .config log report assert "uvn->u_obj.uo_refs == NUM" failed in uvm_vnode.c
* Struck through repros no longer work on HEAD.