syzbot


uvm_fault: ufs_lookup

Status: upstream: reported on 2022/01/14 08:52
Reported-by: syzbot+d0ae3406b0874e045aa1@syzkaller.appspotmail.com
First crash: 387d, last: 85d

Sample crash report:
uvm_fault(0xffffffff82a09df8, 0xffff80001a64f004, 0, 1) -> d
kernel: page fault trap, code=0
Stopped at      ufs_lookup+0x4ce:       movzwl  0x4(%r15,%r13,1),%ebx
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*345371  15897      0         0x2          0    0K syz-executor.2
 160170  86091      0     0x14000      0x200    1  reaper
ufs_lookup() at ufs_lookup+0x4ce sys/ufs/ufs/ufs_lookup.c:281
VOP_LOOKUP(fffffd8063731a58,ffff800029206258,ffff800029206288) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
vfs_lookup(ffff800029206228) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:560
namei(ffff800029206228) at namei+0x36a sys/kern/vfs_lookup.c:244
dounlinkat(ffff800021258fc0,ffffff9c,7f7ffffed690,8) at dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848
syscall(ffff800029206400) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff800029206400) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffed680, count: 8
https://www.openbsd.org/ddb.html describes the minimum info required in bug
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ddb{0}> 
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: uvm_fault(0xffffffff82a09df8, 0xffff80001a64f004, 0, 1) -> d
ddb{0}> trace
ufs_lookup() at ufs_lookup+0x4ce sys/ufs/ufs/ufs_lookup.c:281
VOP_LOOKUP(fffffd8063731a58,ffff800029206258,ffff800029206288) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
vfs_lookup(ffff800029206228) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:560
namei(ffff800029206228) at namei+0x36a sys/kern/vfs_lookup.c:244
dounlinkat(ffff800021258fc0,ffffff9c,7f7ffffed690,8) at dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848
syscall(ffff800029206400) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff800029206400) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffed680, count: -7
ddb{0}> show registers
rdi                                0
rsi                                0
rbp               0xffff800029206060
rbx                                0
rdx                                0
rcx                       0xffffffff
rax               0xfffffd8068797ea8
r8                0xffffffffffffffff
r9                0xfffffd807f7d72d8
r10               0xaf8393080f4d3502
r11               0xcb326f83cbaab1af
r12                                0
r13                                0
r14                                0
r15               0xffff80001a64f000
rip               0xffffffff81acaa7e    ufs_lookup+0x4ce
cs                               0x8
rflags                       0x10202    __ALIGN_SIZE+0xf202
rsp               0xffff800029205f60
ss                              0x10
ufs_lookup+0x4ce:       movzwl  0x4(%r15,%r13,1),%ebx
ddb{0}> show proc
PROC (syz-executor.2) pid=345371 stat=onproc
    flags process=2<EXEC> proc=0
    pri=17, usrpri=82, nice=20
    forw=0xffffffffffffffff, list=0xffff8000fffe9a50,0xffff8000ffff7520
    process=0xffff80002129adc8 user=0xffff800029201000, vmspace=0xfffffd807effd2e0
    estcpu=36, cpticks=1, pctcpu=0.0
    user=0, sys=1, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 88828   72301  66581      0  2     0x81000                syz-executor.7
 88828  448508  66581      0  2   0x4081000                syz-executor.7
 88828  183048  66581      0  3   0x4003000  suspend       syz-executor.7
 88828  432727  66581      0  2   0x4081000                syz-executor.7
 88828  501680  66581      0  2   0x4081000                syz-executor.7
 16003  480407  99595      0  3      0x3000  suspend       syz-executor.6
 16003  522191  99595      0  2   0x4081080                syz-executor.6
 16003  438050  99595      0  2   0x4081080                syz-executor.6
 44701  276091  37053      0  2           0                syz-executor.3
 44701   26625  37053      0  3   0x4000080  ttyout        syz-executor.3
 44701  263011  37053      0  3   0x4000080  ttyout        syz-executor.3
 44701   53305  37053      0  3   0x4000080  ttyout        syz-executor.3
 56200  418917  88521      0  3        0x82  piperd        syz-executor.0
 99595  477474  88521      0  2       0x482                syz-executor.6
 29772  506558  88521      0  2       0x482                syz-executor.5
 24777   20395  88521      0  3        0x82  piperd        syz-executor.4
*15897  345371  88521      0  7         0x2                syz-executor.2
 37053  523974  88521      0  2       0x482                syz-executor.3
 80121  421855      0      0  3     0x14200  acct          acct
 11883  176287      1      0  3    0x100083  ttyin         getty
 37251  256653  88521      0  2       0x482                syz-executor.1
 66581  341625  88521      0  2       0x482                syz-executor.7
 56585  273009      0      0  3     0x14280  nfsidl        nfsio
 88604  143435      0      0  3     0x14280  nfsidl        nfsio
 14226  490526      0      0  3     0x14280  nfsidl        nfsio
 20090  402513      0      0  3     0x14280  nfsidl        nfsio
 57821  249138      0      0  3     0x14280  nfsidl        nfsio
 87261  230644      0      0  3     0x14280  nfsidl        nfsio
 33388  350871      0      0  3     0x14280  nfsidl        nfsio
 33259  289332      0      0  3     0x14280  nfsidl        nfsio
 42182  438048      0      0  3     0x14280  nfsidl        nfsio
 54478  498247      0      0  3     0x14280  nfsidl        nfsio
 47181   54948      0      0  3     0x14280  nfsidl        nfsio
 30586  147617      0      0  3     0x14280  nfsidl        nfsio
 74851  319099      0      0  3     0x14280  nfsidl        nfsio
 63335  302345      0      0  3     0x14280  nfsidl        nfsio
 53344  227684      0      0  3     0x14280  nfsidl        nfsio
 65694  335735      0      0  3     0x14280  nfsidl        nfsio
 17935  354696      0      0  3     0x14280  nfsidl        nfsio
 93121  254310      0      0  3     0x14280  nfsidl        nfsio
 62443  153186      0      0  3     0x14280  nfsidl        nfsio
 31985  287263      0      0  3     0x14280  nfsidl        nfsio
 86878  210796      0      0  3     0x14200  bored         sosplice
 88521  452012  19939      0  3        0x82  wait          syz-fuzzer
 88521  313225  19939      0  3   0x4000082  nanoslp       syz-fuzzer
 88521  213372  19939      0  3   0x4000082  thrsleep      syz-fuzzer
 88521  417960  19939      0  3   0x4000082  wait          syz-fuzzer
 88521  337050  19939      0  3   0x4000082  wait          syz-fuzzer
 88521   47815  19939      0  3   0x4000082  wait          syz-fuzzer
 88521  196926  19939      0  3   0x4000082  wait          syz-fuzzer
 88521  491748  19939      0  3   0x4000082  thrsleep      syz-fuzzer
 88521  496188  19939      0  3   0x4000082  thrsleep      syz-fuzzer
 88521   61722  19939      0  3   0x4000082  wait          syz-fuzzer
 88521  357668  19939      0  3   0x4000082  kqread        syz-fuzzer
 88521   16746  19939      0  3   0x4000082  wait          syz-fuzzer
 88521  414795  19939      0  3   0x4000082  thrsleep      syz-fuzzer
 88521  246265  19939      0  3   0x4000082  wait          syz-fuzzer
 88521   65039  19939      0  3   0x4000082  thrsleep      syz-fuzzer
 88521  259186  19939      0  3   0x4000082  thrsleep      syz-fuzzer
 19939  225826  81940      0  3    0x10008a  sigsusp       ksh
 81940  495327  57079      0  3        0x9a  kqread        sshd
 57079  221777      1      0  3        0x88  kqread        sshd
 67154   13018  80678     74  3   0x1100092  bpf           pflogd
 80678  172960      1      0  3        0x80  netio         pflogd
 17130   81067  86174     73  3   0x1100090  kqread        syslogd
 86174  518897      1      0  3    0x100082  netio         syslogd
 15074  427797      1      0  3    0x100080  kqread        resolvd
 29712  434839      0      0  3     0x14200  bored         smr
 68975  115101      0      0  2     0x14200                zerothread
 71078  299839      0      0  3     0x14200  aiodoned      aiodoned
 27343  469843      0      0  3     0x14200  syncer        update
 48001  196493      0      0  3     0x14200  cleaner       cleaner
 86091  160170      0      0  7     0x14200                reaper
 20628  418158      0      0  3     0x14200  pgdaemon      pagedaemon
 56746  501202      0      0  3     0x14200  bored         viomb
 10053  450369      0      0  3  0x40014200  acpi0         acpi0
 72911  480503      0      0  3  0x40014200                idle1
 13386  117248      0      0  3     0x14200  bored         softnet
 57005  514749      0      0  3     0x14200  bored         softnet
 58780   30449      0      0  3     0x14200  bored         softnet
 58559  161685      0      0  3     0x14200  bored         softnet
 45120  505208      0      0  3     0x14200  bored         systqmp
 83242  243944      0      0  3     0x14200  bored         systq
 18809   25292      0      0  2  0x40014200                softclock
 13163   83040      0      0  3  0x40014200                idle0
     1  388616      0      0  3     0x80082  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{0}> show all locks
Process 15897 (syz-executor.2) thread 0xffff800021258fc0 (345371)
exclusive rrwlock inode r = 0 (0xfffffd807ea68d68)
#0  witness_lock+0x44d
#1  rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3  VOP_LOCK+0x87 sys/kern/vfs_vops.c:518
#4  vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5  vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412
#6  namei+0x36a sys/kern/vfs_lookup.c:244
#7  dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848
#8  syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#8  syscall+0x438 sys/arch/amd64/amd64/trap.c:599
#9  Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82a147a8)
#0  witness_lock+0x44d
#1  syscall+0x424 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#1  syscall+0x424 sys/arch/amd64/amd64/trap.c:599
#2  Xsyscall+0x128
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10210   6493K    6943K  78643K     18174        0
            pcb    15     18K      22K  78643K     10169        0
         rtable   234     10K      10K  78643K      1977        0
         ifaddr   134     29K      30K  78643K       921        0
         sysctl     2      0K       1K  78643K        11        0
       counters    60     35K      36K  78643K       440        0
       ioctlops     0      0K       4K  78643K      2310        0
            iov     0      0K      24K  78643K      1153        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         4        0
         vnodes  1474     92K      93K  78643K      5583        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     2      1K       9K  78643K       120        0
         VM map     2      1K       1K  78643K         2        0
            sem    12      0K       0K  78643K      1587        0
        dirhash    12      2K       2K  78643K        12        0
           ACPI  1697    195K     286K  78643K     12548        0
      file desc    13     45K      89K  78643K      9068        0
          sigio     0      0K       0K  78643K       354        0
           proc    64     67K     115K  78643K      1530        0
        subproc   104      6K       6K  78643K       364        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
    ip_moptions     0      0K       0K  78643K       585        0
       in_multi    92      6K       6K  78643K       706        0
    ether_multi     1      0K       0K  78643K        41        0
            mrt     1      0K       0K  78643K        25        0
    ISOFS mount     1     32K      32K  78643K         1        0
  MSDOSFS mount     1     16K      16K  78643K         1        0
           ttys   127    572K     572K  78643K       127        0
           exec     0      0K       1K  78643K      1735        0
     pfkey data     0      0K       0K  78643K        38        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      64K  78643K        10        0
       UVM amap   441    713K     713K  78643K     65802        0
       UVM aobj   131      4K       4K  78643K       139        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
    ip6_options     0      0K       0K  78643K       298        0
            NDP    14      0K       1K  78643K       261        0
           temp   145   4698K    5722K  78643K     82247        0
         kqueue     6     10K      24K  78643K       490        0
      SYN cache     2     16K      16K  78643K         2        0
ddb{0}> 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      751    0      750    10     9     1     3     0     8    0
rtentry    112      601    0      498     5     1     4     4     0     8    0
unpcb      144     6319    0     6311    75    70     5     6     0     8    4
syncache   296       38    0       38    15    14     1     1     0     8    1
tcpqe       32      261  106      261     4     4     0     2     0     8    0
tcpcb      776     2436    0     2424    91    83     8    11     0     8    6
arp        120       69    0       49     1     0     1     1     0     8    0
inpcb      368    15922    0    15906   166   155    11    17     0     8    8
nd6         48      133    0      108     1     0     1     1     0     8    0
pkpcb       40       16    0       16     5     5     0     1     0     8    0
kcovpl      48       28    0       20     1     0     1     1     0     8    0
mppekey    1024       4    0        4     2     2     0     1     0     8    0
ppxss      1256     102    0      102    17    17     0     1     0     8    0
pppxif     1704      32    0       32     9     9     0     1     0     8    0
pfstscr     40        7    0        7     2     2     0     1     0     8    0
pffrag     232       60    0       55     5     4     1     1     0   482    0
pffrnode    88       60    0       55     5     4     1     1     0     8    0
pffrent     40      127    0      122     6     5     1     1     0     8    0
pfosfp      40     1464    0     1040     5     0     5     5     0     8    0
pfosfpen   112     1464    0      749    21     0    21    21     0     8    0
pfanchor   1280     910    2      398    48     5    43    43     0     8    0
pfqueue    264        2    0        2     1     1     0     1     0     8    0
pfstitem    24        2    0        2     1     1     0     1     0     8    0
pfstkey    120       14    0       14     2     2     0     1     0     8    0
pfstate    384        7    0        7     2     2     0     1     0     8    0
rttmr      136        5    0        5     2     2     0     1     0     8    0
art_heap8  4096      11    0       10     9     8     1     3     0     8    0
art_heap4  256     2937    0     2501    51    22    29    30     0     8    0
art_table   32     2948    0     2511     5     1     4     4     0     8    0
art_node    16      595    0      505     1     0     1     1     0     8    0
sysvmsgpl   40        4    0        2     1     0     1     1     0     8    0
semupl     112        2    0        2     1     1     0     1     0     8    0
semapl     112     1585    0     1575     1     0     1     1     0     8    0
shmpl      112      136    0        8     4     0     4     4     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256    15113    0    13629    93     0    93    93     0     8    0
ffsino     272    15113    0    13629    99     0    99    99     0     8    0
nchpl      144    29107    0    27462    63     0    63    63     0     8    0
rtmask      32        2    0        2     1     1     0     1     0     8    0
uvmvnodes   80     5926    0        0   121     0   121   121     0     8    0
vnodes     216     5926    0        0   330     0   330   330     0     8    0
namei      1024  100967    0   100966    10     9     1     2     0     8    0
percpumem   16      232    0      190     1     0     1     1     0     8    0
vcpupl     2048     110    0        0    14     0    14    14     0     8    0
vmpool     568      133    0       23     8     0     8     8     0     8    0
kstatmem   264      328    0      300     3     0     3     3     0     8    0
scsiplug    72        9    0        9     3     3     0     1     0     8    0
scxspl     216    91862    0    91862    22    21     1     8     0     8    1
plimitpl   152      996    0      980     1     0     1     1     0     8    0
sigapl     424     9366    0     9302    10     2     8     8     0     8    0
futexpl     64    89997    0    89995     6     5     1     1     0     8    0
knotepl    120      750    0        0    12     0    12    12     0     8    0
kqueuepl   216     1791    0     1786    31    30     1     6     0     8    0
pipepl     320     1718    0     1690    41    36     5     8     0     8    2
fdescpl    496     9327    0     9304     5     1     4     5     0     8    0
filepl     152    73699    0    73470   121   104    17    19     0     8    4
lockfpl    104    11625    0    11623    21    20     1     3     0     8    0
lockfspl    48     2603    0     2601     1     0     1     1     0     8    0
sessionpl  144       45    0       29     1     0     1     1     0     8    0
pgrppl      48      254    0      238     1     0     1     1     0     8    0
ucredpl    104     6698    0     6688     1     0     1     1     0     8    0
zombiepl   144     9305    0     9302     4     3     1     1     0     8    0
processpl  1064    9366    0     9302     5     0     5     5     0     8    0
procpl     672    27828    0    27735    26    17     9    10     0     8    0
srpgc       96       28    0       28    11    11     0     1     0     8    0
sosppl     168       77    0       75     8     7     1     1     0     8    0
sockpl     488    23033    0    23010   370   356    14    28     0     8    8
mcl64k     65536     33    0        0     3     0     3     3     0     8    0
mcl16k     16384     17    0        0     3     0     3     3     0     8    0
mcl12k     12288     30    0        0     2     0     2     2     0     8    0
mcl9k      9216      17    0        0     2     0     2     2     0     8    0
mcl8k      8192      32    0        0     3     0     3     3     0     8    0
mcl4k      4096      33    0        0     3     0     3     3     0     8    0
mcl2k2     2112       5    0        0     1     0     1     1     0     8    0
mcl2k      2048     340    0        0    37    15    22    37     0     8    0
mtagpl      96       54    0        0     2     0     2     2     0     8    0
mbufpl     256     1270    0        0    60     0    60    60     0     8    0
bufpl      288    20523    0    14189   453     0   453   453     0     8    0
anonpl      24  1912658    0  1896213   252   131   121   176     0   186    0
amapchunkpl 152  184959    0   184181    92    53    39    62     0   158    0
amappl16   200    16177    0    15679    85    48    37    40     0     8    7
amappl15   192       18    0       17     1     0     1     1     0     8    0
amappl14   184      209    0      197     2     1     1     2     0     8    0
amappl13   176       12    0       12     4     4     0     1     0     8    0
amappl12   168      707    0      694     1     0     1     1     0     8    0
amappl11   160       49    0       41     1     0     1     1     0     8    0
amappl10   152       53    0       41     1     0     1     1     0     8    0
amappl9    144     1041    0     1040     1     0     1     1     0     8    0
amappl8    136      458    0      356     5     1     4     4     0     8    0
amappl7    128       94    0       76     1     0     1     1     0     8    0
amappl6    120      557    0      539     2     1     1     2     0     8    0
amappl5    112      247    0      237     1     0     1     1     0     8    0
amappl4    104     1048    0     1012     4     2     2     2     0     8    1
amappl3     96    28510    0    28467     2     0     2     2     0     8    0
amappl2     88    10812    0    10754     3     1     2     3     0     8    0
amappl1     80   214885    0   214274    23     7    16    22     0     8    0
amappl      88    64981    0    64731     9     2     7     7     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      138    0        8     3     0     3     3     0     8    0
uaddrrnd    24     9461    0     9328     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     9461    0     9328     1     0     1     1     0     8    0
vmmpekpl   168    75956    0    75860     5     0     5     5     0     8    0
vmmpepl    168   866682    0   864066   254   115   139   152     0   357    2
vmsppl     368     9460    0     9327    15     2    13    13     0     8    0
rwobjpl     56   234169    0   226487   124    12   112   114     0     8    1
pdppl      4096   18929    0    18764   625   452   173   173     0     8    8
pvpl        32  3828460    0  3807275   509   305   204   314     0   265    3
pmappl     248     9460    0     9327    12     3     9     9     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112     1669    0      684    29     0    29    29     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
ufs_lookup() at ufs_lookup+0x4ce sys/ufs/ufs/ufs_lookup.c:281
VOP_LOOKUP(fffffd8063731a58,ffff800029206258,ffff800029206288) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
vfs_lookup(ffff800029206228) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:560
namei(ffff800029206228) at namei+0x36a sys/kern/vfs_lookup.c:244
dounlinkat(ffff800021258fc0,ffffff9c,7f7ffffed690,8) at dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848
syscall(ffff800029206400) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff800029206400) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffed680, count: -7
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x1a:        addq    $0x8,%rsp
x86_ipi_db(ffff800020dd8ff0) 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(ffffffff82a145a0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82a145a0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
uvm_unmap_detach(ffff8000212390e0,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1382
uvm_map_teardown(fffffd80719bb5f0) at uvm_map_teardown+0x2aa sys/uvm/uvm_map.c:2598
uvmspace_free(fffffd80719bb5f0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3504
reaper(ffff8000212337a8) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: 7
ddb{1}> trace
x86_ipi_db(ffff800020dd8ff0) 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(ffffffff82a145a0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82a145a0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
uvm_unmap_detach(ffff8000212390e0,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1382
uvm_map_teardown(fffffd80719bb5f0) at uvm_map_teardown+0x2aa sys/uvm/uvm_map.c:2598
uvmspace_free(fffffd80719bb5f0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3504
reaper(ffff8000212337a8) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: -8

Crashes (15):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-openbsd-multicore 2022/11/12 05:49 openbsd 3eb75377085e f42ee5d8 .config console log report [disk image] [bsd.gdb] [kernel image] uvm_fault: ufs_lookup
ci-openbsd-multicore 2022/10/24 18:24 openbsd 214e94d30852 ff2fe65d .config console log report [disk image] [bsd.gdb] [kernel image] uvm_fault: ufs_lookup
ci-openbsd-multicore 2022/10/08 14:29 openbsd 5cb1d9dce18f aea5da89 .config console log report [disk image] [bsd.gdb] [kernel image] uvm_fault: ufs_lookup
ci-openbsd-main 2022/09/22 20:38 openbsd 46a03a1ef9f5 0042f2b4 .config console log report [disk image] [bsd.gdb] [kernel image] uvm_fault: ufs_lookup
ci-openbsd-multicore 2022/08/27 16:27 openbsd 475112fd38b6 07177916 .config console log report uvm_fault: ufs_lookup
ci-openbsd-multicore 2022/08/25 05:58 openbsd 55a219b1c01f 514514f6 .config console log report uvm_fault: ufs_lookup
ci-openbsd-multicore 2022/08/15 20:15 openbsd 08fede8d77b9 8dfcaa3d .config console log report uvm_fault: ufs_lookup
ci-openbsd-main 2022/06/14 01:11 openbsd db879ab8e4d2 0f087040 .config console log report uvm_fault: ufs_lookup
ci-openbsd-multicore 2022/05/16 12:50 openbsd 9d7872c9260d 744a39e2 .config console log report uvm_fault: ufs_lookup
ci-openbsd-main 2022/05/13 18:40 openbsd 9eb589bc5493 7ce5a022 .config console log report uvm_fault: ufs_lookup
ci-openbsd-multicore 2022/03/08 14:46 openbsd 9f7de9371f1f 7bdd8b2c .config console log report uvm_fault: ufs_lookup
ci-openbsd-multicore 2022/02/11 05:52 openbsd 4e4477fd5c2f 0b33604d .config console log report uvm_fault: ufs_lookup
ci-openbsd-multicore 2022/01/24 23:14 openbsd 7f22cd74b38a 96ff84ef .config console log report uvm_fault: ufs_lookup
ci-openbsd-multicore 2022/01/24 18:24 openbsd 7f22cd74b38a 96ff84ef .config console log report uvm_fault: ufs_lookup
ci-openbsd-multicore 2022/01/14 08:51 openbsd a0e2ca3ce324 b8d780ab .config console log report uvm_fault: ufs_lookup
* Struck through repros no longer work on HEAD.