syzbot


panic: pool_do_get: rwobjpl: page empty

Status: upstream: reported on 2024/04/08 18:37
Reported-by: syzbot+bd53127be83ded974104@syzkaller.appspotmail.com
First crash: 65d, last: 45d

Sample crash report:
panic: pool_do_get: rwobjpl: page empty
Stopped at      db_enter+0x1c:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*471391  50508      0   0x8000000          0    0  syz-executor.6
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82947fb1) at panic+0x17b sys/kern/subr_prf.c:198
pool_do_get(ffffffff82e75d90,1,ffff80002a2127c8) at pool_do_get+0x40f sys/kern/subr_pool.c:726
pool_get(ffffffff82e75d90,1) at pool_get+0xf0 sys/kern/subr_pool.c:582
_rw_obj_alloc_flags(fffffd80793c4c30,ffffffff82932532,0,ffffffff82cc4740) at _rw_obj_alloc_flags+0x44 sys/kern/kern_rwlock.c:556
amap_alloc(1000,2,0) at amap_alloc+0xa7 amap_list_insert sys/uvm/uvm_amap.c:95 [inline]
amap_alloc(1000,2,0) at amap_alloc+0xa7 sys/uvm/uvm_amap.c:431
amap_copy(fffffd806b283a68,fffffd8069638b88,2,1,72f8923000,72f8923001) at amap_copy+0x627 sys/uvm/uvm_amap.c:585
uvm_fault_check(ffff80002a212b20,ffff80002a212b58,ffff80002a212b80) at uvm_fault_check+0x6b7 uvmfault_amapcopy sys/uvm/uvm_fault.c:250 [inline]
uvm_fault_check(ffff80002a212b20,ffff80002a212b58,ffff80002a212b80) at uvm_fault_check+0x6b7 sys/uvm/uvm_fault.c:710
uvm_fault(fffffd806b283a68,72f8923000,0,1) at uvm_fault+0xf2 sys/uvm/uvm_fault.c:600
upageflttrap(ffff80002a212ca0,72f8923008) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a212ca0) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x722090b107f0, count: 3
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: pool_do_get: rwobjpl: page empty
ddb{0}> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82947fb1) at panic+0x17b sys/kern/subr_prf.c:198
pool_do_get(ffffffff82e75d90,1,ffff80002a2127c8) at pool_do_get+0x40f sys/kern/subr_pool.c:726
pool_get(ffffffff82e75d90,1) at pool_get+0xf0 sys/kern/subr_pool.c:582
_rw_obj_alloc_flags(fffffd80793c4c30,ffffffff82932532,0,ffffffff82cc4740) at _rw_obj_alloc_flags+0x44 sys/kern/kern_rwlock.c:556
amap_alloc(1000,2,0) at amap_alloc+0xa7 amap_list_insert sys/uvm/uvm_amap.c:95 [inline]
amap_alloc(1000,2,0) at amap_alloc+0xa7 sys/uvm/uvm_amap.c:431
amap_copy(fffffd806b283a68,fffffd8069638b88,2,1,72f8923000,72f8923001) at amap_copy+0x627 sys/uvm/uvm_amap.c:585
uvm_fault_check(ffff80002a212b20,ffff80002a212b58,ffff80002a212b80) at uvm_fault_check+0x6b7 uvmfault_amapcopy sys/uvm/uvm_fault.c:250 [inline]
uvm_fault_check(ffff80002a212b20,ffff80002a212b58,ffff80002a212b80) at uvm_fault_check+0x6b7 sys/uvm/uvm_fault.c:710
uvm_fault(fffffd806b283a68,72f8923000,0,1) at uvm_fault+0xf2 sys/uvm/uvm_fault.c:600
upageflttrap(ffff80002a212ca0,72f8923008) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a212ca0) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x722090b107f0, count: -12
ddb{0}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff80002a212620
rbx               0xffffffff82d1bcdf    cpu_info_full_primary+0x2cdf
rdx                                0
rcx               0xffff80002de93c70
rax               0xffffffff82d1aff0    cpu_info_full_primary+0x1ff0
r8                 0x101010101010101
r9                0x8080808080808080
r10               0x6e9433c4e26a1baf
r11               0xae285211b1540a32
r12               0xffffffff82d1bae0    cpu_info_full_primary+0x2ae0
r13                                0
r14                                0
r15                              0x1
rip               0xffffffff8210c9bc    db_enter+0x1c
cs                               0x8
rflags                         0x246
rsp               0xffff80002a212610
ss                                 0
db_enter+0x1c:  addq    $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.6) tid=471391 pid=50508 tcnt=1 stat=onproc
    flags process=8000000 proc=0
    runpri=81, usrpri=81, slppri=17, nice=20
    wchan=0x0, wmesg=, ps_single=0x0
    forw=0xffffffffffffffff, list=0xffff80002de927f0,0xffff8000ffffca60
    process=0xffff80002ef83568 user=0xffff80002a20d000, vmspace=0xfffffd806b283a68
    estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
*50508  471391  74644      0  7   0x8000000                syz-executor.6
  4532  306797  33278      0  2   0x8000000                syz-executor.7
  4532  459953  33278      0  3   0xc000080  fsleep        syz-executor.7
  8622   52144  56062      0  2   0x8000000                syz-executor.5
  8622   44940  56062      0  3   0xc000080  netio         syz-executor.5
  8622   10263  56062      0  3   0xc000080  fsleep        syz-executor.5
 74165  296417  83799      0  2   0x8000000                syz-executor.0
 74165  233002  83799      0  3   0xc000080  netio         syz-executor.0
 74165  373757  83799      0  2   0xc000000                syz-executor.0
 99468  119593      1      0  2   0x8000000                syz-executor.3
 99468  435291      1      0  3   0xc000080  fsleep        syz-executor.3
 44567  404718  32179      0  2   0x8000000                syz-executor.1
 44567  337990  32179      0  3   0xc000080  sbwait        syz-executor.1
 44567  366688  32179      0  3   0xc000080  fsleep        syz-executor.1
  4836  290809  99841      0  3   0x8000080  nanoslp       syz-executor.4
  4836  164986  99841      0  2   0xc000000                syz-executor.4
  4836  119375  99841      0  3   0xc000080  fsleep        syz-executor.4
 66598  478315  70213      0  2   0x8000002                syz-executor.2
 33278  451344  70213      0  3   0x8000082  nanoslp       syz-executor.7
 38809  489050      0      0  3     0x14200  acct          acct
 83799  329117  70213      0  3   0x8000082  nanoslp       syz-executor.0
 98505  372294      1      0  3   0x8000080  fsleep        syz-executor.3
 98505  169971      1      0  3   0xc000080  kqsel         syz-executor.3
 32179   88333  70213      0  3   0x8000082  nanoslp       syz-executor.1
 36019  215149      0      0  3     0x14280  nfsidl        nfsio
 61583   12558      0      0  3     0x14280  nfsidl        nfsio
 41504  351333      0      0  3     0x14280  nfsidl        nfsio
 48342   55455      0      0  3     0x14280  nfsidl        nfsio
 59826   30360      0      0  3     0x14280  nfsidl        nfsio
 78945   82077      0      0  3     0x14280  nfsidl        nfsio
 59807  483744      0      0  3     0x14280  nfsidl        nfsio
 88800  438698      0      0  3     0x14280  nfsidl        nfsio
 76566   19581      0      0  3     0x14280  nfsidl        nfsio
 55646  401834      0      0  3     0x14280  nfsidl        nfsio
 14765   36543      0      0  3     0x14280  nfsidl        nfsio
 59237   89152      0      0  3     0x14280  nfsidl        nfsio
 71199  198807      0      0  3     0x14280  nfsidl        nfsio
 56686  361920      0      0  3     0x14280  nfsidl        nfsio
 56051  206387      0      0  3     0x14280  nfsidl        nfsio
 36415  304204      0      0  3     0x14280  nfsidl        nfsio
 71359  510319      0      0  3     0x14280  nfsidl        nfsio
 51620   21542      0      0  3     0x14280  nfsidl        nfsio
 90639  272635      0      0  3     0x14280  nfsidl        nfsio
 55789   70789      0      0  3     0x14280  nfsidl        nfsio
 56062  252618  70213      0  3   0x8000082  nanoslp       syz-executor.5
 99841  388751  70213      0  3   0x8000082  nanoslp       syz-executor.4
 74644  487737  70213      0  3   0x8000082  nanoslp       syz-executor.6
 65841  496778      1      0  3   0x8000080  fsleep        syz-executor.6
 65841  480607      1      0  3   0xc000080  kqread        syz-executor.6
 72241  509145      0      0  3     0x14200  bored         sosplice
 13781  470217  93776      0  3  0x18100082  netio         arp
 93776  359027      1      0  3   0x810008a  sigsusp       sh
 70213  476635  23212      0  3  0x1a000082  wait          syz-fuzzer
 70213  148790  23212      0  3  0x1e000082  thrsleep      syz-fuzzer
 70213  330548  23212      0  3  0x1e000082  thrsleep      syz-fuzzer
 70213  332206  23212      0  3  0x1e000082  thrsleep      syz-fuzzer
 70213   53240  23212      0  3  0x1e000082  thrsleep      syz-fuzzer
 70213  334598  23212      0  3  0x1e000082  thrsleep      syz-fuzzer
 70213  319844  23212      0  3  0x1e000082  wait          syz-fuzzer
 70213  395996  23212      0  3  0x1e000082  wait          syz-fuzzer
 70213   93722  23212      0  3  0x1e000082  thrsleep      syz-fuzzer
 70213  500623  23212      0  3  0x1e000082  thrsleep      syz-fuzzer
 70213  221237  23212      0  3  0x1e000082  thrsleep      syz-fuzzer
 70213  212502  23212      0  3  0x1e000082  kqread        syz-fuzzer
 70213  323750  23212      0  3  0x1e000082  wait          syz-fuzzer
 70213  500592  23212      0  3  0x1e000082  wait          syz-fuzzer
 70213  388644  23212      0  3  0x1e000082  wait          syz-fuzzer
 70213  155579  23212      0  3  0x1e000082  wait          syz-fuzzer
 23212  115900  64357      0  3   0x810008a  sigsusp       ksh
 64357  325420   1063      0  3  0x1800009a  kqread        sshd
 53968   24437      1      0  3  0x18100083  ttyin         getty
  1063  394219      1      0  3  0x18000088  kqread        sshd
 28244  106140  64334     73  3  0x19100090  kqread        syslogd
 64334     206      1      0  3  0x18100082  sbwait        syslogd
 40884  312047      1      0  3  0x18100080  kqread        resolvd
 55547  115233      0      0  3     0x14200  bored         smr
 21619  270591      0      0  2     0x14200                zerothread
 94792  470182      0      0  3     0x14200  aiodoned      aiodoned
 44834  334233      0      0  3     0x14200  syncer        update
 65176  475391      0      0  3     0x14200  cleaner       cleaner
 22324  476489      0      0  3     0x14200  reaper        reaper
 62488  276583      0      0  3     0x14200  pgdaemon      pagedaemon
 36570  229487      0      0  3     0x14200  bored         viomb
 12571  189155      0      0  3  0x40014200  acpi0         acpi0
 48963   57443      0      0  7  0x40014200                idle1
 99568  153090      0      0  3     0x14200  bored         softnet3
 59779   42533      0      0  3     0x14200  bored         softnet2
 43583  111845      0      0  3     0x14200  bored         softnet1
 64307  394222      0      0  3     0x14200  bored         softnet0
 37744  178173      0      0  3     0x14200  bored         systqmp
 71503  489011      0      0  3     0x14200  bored         systq
 69085  283082      0      0  3     0x14200  tmoslp        softclockmp
 81230  523993      0      0  3  0x40014200  tmoslp        softclock
 58154  370962      0      0  3  0x40014200                idle0
     1  486535      0      0  3   0x8080082  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex rwobjpl r = 0 (0xffffffff82e75da0)
#0  witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x446 sys/kern/subr_witness.c:1187
#1  mtx_enter_try+0x103
#2  mtx_enter+0x4e sys/kern/kern_lock.c:266
#3  pool_get+0xc4 sys/kern/subr_pool.c:579
#4  _rw_obj_alloc_flags+0x44 sys/kern/kern_rwlock.c:556
#5  amap_alloc+0xa7 amap_list_insert sys/uvm/uvm_amap.c:95 [inline]
#5  amap_alloc+0xa7 sys/uvm/uvm_amap.c:431
#6  amap_copy+0x627 sys/uvm/uvm_amap.c:585
#7  uvm_fault_check+0x6b7 uvmfault_amapcopy sys/uvm/uvm_fault.c:250 [inline]
#7  uvm_fault_check+0x6b7 sys/uvm/uvm_fault.c:710
#8  uvm_fault+0xf2 sys/uvm/uvm_fault.c:600
#9  upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
#10 usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
#11 recall_trap+0x8
Process 50508 (syz-executor.6) thread 0xffff80002de93c70 (471391)
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10198   6431K    6946K 166960K     12787        0
            pcb    17     15K      16K 166960K       540        0
         rtable   194      6K       7K 166960K      1399        0
             pf    27      8K      10K 166960K       216        0
         ifaddr    38     15K      17K 166960K       216        0
        ifgroup    46      2K       2K 166960K       344        0
         sysctl     3      0K       2K 166960K         8        0
       counters    62     36K      36K 166960K       214        0
       ioctlops     0      0K       4K 166960K      1721        0
            iov     1      2K      36K 166960K       244        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1475     93K      93K 166960K      3172        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K      13K 166960K        78        0
         VM map     2      1K       1K 166960K         2        0
            sem    13      1K       1K 166960K        57        0
        dirhash    12      2K       2K 166960K        60        0
           ACPI  1697    195K     286K 166960K     12548        0
      file desc    20     73K      89K 166960K      3691        0
          sigio     0      0K       0K 166960K        59        0
           proc    54     55K     103K 166960K      1493        0
        subproc   143      8K       9K 166960K       468        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     0      0K       0K 166960K       601        0
       in_multi    85      6K       7K 166960K       478        0
    ether_multi     1      0K       0K 166960K        24        0
            mrt     2      0K       0K 166960K        12        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys   223    996K     996K 166960K       223        0
           exec     0      0K       1K 166960K      1155        0
     pfkey data     0      0K       0K 166960K         2        0
            tdb     3      0K       0K 166960K         3        0
        VM swap     8     62K      64K 166960K        10        0
       UVM amap   294    113K     129K 166960K     33779        0
       UVM aobj    29      2K       2K 166960K        32        0
     pinsyscall    35     70K     100K 166960K      5569        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K       217        0
            NDP    10      0K       1K 166960K       154        0
           temp    82   6820K    6947K 166960K    145230        0
         kqueue     8     14K      26K 166960K       410        0
      SYN cache     2     16K      16K 166960K         2        0
ddb{0}> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache    128       24    0        0     1     0     1     1     0     8    0
rtpcb      120      402    0      399     3     2     1     3     0     8    0
rtentry    112      467    0      380     4     1     3     4     0     8    0
unpcb      144     3190    0     3116    18    15     3     6     0     8    0
syncache   336       13    0       13     7     6     1     1     0     8    1
tcpqe       32       32    0       32     3     3     0     1     0     8    0
tcpcb      808     1211    0     1206    26    25     1     8     0     8    0
arp        120       87    0       78     1     0     1     1     0     8    0
inpcb      384     4311    0     4304    55    52     3    11     0     8    1
nd6        136      117    0       93     1     0     1     1     0     8    0
pkpcb       40       29    0       29    15    14     1     1     0     8    1
kcovpl      48       36    0       25     1     0     1     1     0     8    0
ppxss      1168      18    0       18     8     7     1     1     0     8    1
pffrag     232       28    0       23     6     5     1     1     0   482    0
pffrnode    88       28    0       23     6     5     1     1     0     8    0
pffrent     40      263    0      258     6     5     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      231    0      207     1     0     1     1     0     8    0
pfstkey    128      231    0      207     2     0     2     2     0     8    0
pfstate    376      231    0      207     6     2     4     5     0     8    0
pfrule     1344      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     1712    0     1291    40    13    27    30     0     8    0
art_table   32     1713    0     1291     5     1     4     4     0     8    0
art_node    16      458    0      380     1     0     1     1     0     8    0
sysvmsgpl   40        1    0        0     1     0     1     1     0     8    0
semupl     112        4    0        4     2     2     0     1     0     8    0
semapl     112       52    0       41     1     0     1     1     0     8    0
shmpl      112       29    0        3     1     0     1     1     0     8    0
dirhash    1024      49    0       32     3     0     3     3     0     8    0
dino2pl    256     7325    0     5790    97     0    97    97     0     8    0
ffsino     272     7325    0     5790   103     0   103   103     0     8    0
nchpl      144    12816    0    12221    66    40    26    66     0     8    0
uvmvnodes   80     7717    0        0   158     0   158   158     0     8    0
vnodes     216     7717    0        0   429     0   429   429     0     8    0
namei      1024   46819    0    46819    10     9     1     2     0     8    1
percpumem   16      121    0       76     1     0     1     1     0     8    0
vcpupl     3904      10    0        2     2     0     2     2     0     8    0
vmpool     696       40    0       32     1     0     1     1     0     8    0
kstatmem   264      172    0      152     2     0     2     2     0     8    0
scsiplug    72        3    0        3     3     2     1     1     0     8    1
scxspl     216    76289    0    76289    21    19     2     8     1     8    2
plimitpl   152      804    0      785     1     0     1     1     0     8    0
sigapl     424     3970    0     3902    11     2     9     9     0     8    1
futexpl     64    61968    0    61961     3     2     1     1     0     8    0
knotepl    120      877    0        0    18     0    18    18     0     8    0
kqueuepl   216      943    0      934     3     2     1     3     0     8    0
pipepl     320      591    0      558     3     0     3     3     0     8    0
fdescpl    496     3928    0     3900     5     0     5     5     0     8    0
filepl     152    27505    0    27159    55    41    14    19     0     8    0
lockfpl    104     1255    0     1252     3     2     1     2     0     8    0
lockfspl    48      422    0      419     1     0     1     1     0     8    0
sessionpl  144       50    0       32     1     0     1     1     0     8    0
pgrppl      48      135    0      117     1     0     1     1     0     8    0
ucredpl    104     5492    0     5484     1     0     1     1     0     8    0
zombiepl   144     3902    0     3902     2     1     1     1     0     8    1
processpl  1136    3970    0     3902     6     0     6     6     0     8    0
procpl     656     8089    0     7994    11     1    10    10     0     8    1
srpgc       96       21    0       21     7     7     0     1     0     8    0
sosppl     168       57    0       57    17    16     1     1     0     8    1
sockpl     664     7971    0     7887    80    72     8    14     0     8    0
mcl64k     65536      3    0        0     1     0     1     1     0     8    0
mcl12k     12288      2    0        0     1     0     1     1     0     8    0
mcl9k      9216       2    0        0     1     0     1     1     0     8    0
mcl8k      8192       7    0        0     1     0     1     1     0     8    0
mcl4k      4096       3    0        0     1     0     1     1     0     8    0
mcl2k2     2112       1    0        0     1     0     1     1     0     8    0
mcl2k      2048     527    0        0    41     4    37    41     0     8    0
mtagpl      96       14    0        0     1     0     1     1     0     8    0
mbufpl     256     1260    0        0    65     0    65    65     0     8    0
bufpl      280    14214    0     6497   552     0   552   552     0     8    0
anonpl      24   586485    0   580247   175    89    86    86     0   186   26
amapchunkpl 152  110537    0   109782   104    70    34    42     0   158    1
amappl16   200    13349    0    13206   109    89    20    32     0     8    8
amappl15   192        8    0        8     2     2     0     1     0     8    0
amappl14   184      280    0      271     2     1     1     2     0     8    0
amappl13   176        8    0        8     2     2     0     1     0     8    0
amappl12   168     5003    0     4972     3     1     2     2     0     8    0
amappl11   160       50    0       46     1     0     1     1     0     8    0
amappl10   152       96    0       85     1     0     1     1     0     8    0
amappl9    144      174    0      173     1     0     1     1     0     8    0
amappl8    136      185    0      148     2     0     2     2     0     8    0
amappl7    128       59    0       44     1     0     1     1     0     8    0
amappl6    120      670    0      657     2     1     1     2     0     8    0
amappl5    112      293    0      284     1     0     1     1     0     8    0
amappl4    104      741    0      707     2     0     2     2     0     8    0
amappl3     96    21097    0    21005     3     0     3     3     0     8    0
amappl2     88     4404    0     4348     3     1     2     3     0     8    0
amappl1     80    22154    0    21713    22    10    12    22     0     8    0
amappl      88    32815    0    32597     6     0     6     6     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       31    0        3     1     0     1     1     0     8    0
uaddrrnd    24     3968    0     3932     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     3968    0     3932     1     0     1     1     0     8    0
vmmpekpl   168    30036    0    29975     5     1     4     4     0     8    0
vmmpepl    168   251950    0   250112   206   103   103   111     0   357   15
vmsppl     440     3967    0     3932     6     1     5     5     0     8    0
rwobjpl     56    70474    0    61668   136     6   130   130     0     8    5
rwobjpl: pool(0xffffffff82e75d90:rwobjpl): page inconsistency: page 0x0; at page head addr 0xfffffd8072e7cf90 (p 0xfffffd8072e7c000)
pdppl      4096    7943    0     7872   329   255    74    82     0     8    3
pvpl        32    44940    0        0   364     1   363   363     0   265    0
pmappl     248     3967    0     3932     3     0     3     3     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112      736    0      321    13     0    13    13     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82947fb1) at panic+0x17b sys/kern/subr_prf.c:198
pool_do_get(ffffffff82e75d90,1,ffff80002a2127c8) at pool_do_get+0x40f sys/kern/subr_pool.c:726
pool_get(ffffffff82e75d90,1) at pool_get+0xf0 sys/kern/subr_pool.c:582
_rw_obj_alloc_flags(fffffd80793c4c30,ffffffff82932532,0,ffffffff82cc4740) at _rw_obj_alloc_flags+0x44 sys/kern/kern_rwlock.c:556
amap_alloc(1000,2,0) at amap_alloc+0xa7 amap_list_insert sys/uvm/uvm_amap.c:95 [inline]
amap_alloc(1000,2,0) at amap_alloc+0xa7 sys/uvm/uvm_amap.c:431
amap_copy(fffffd806b283a68,fffffd8069638b88,2,1,72f8923000,72f8923001) at amap_copy+0x627 sys/uvm/uvm_amap.c:585
uvm_fault_check(ffff80002a212b20,ffff80002a212b58,ffff80002a212b80) at uvm_fault_check+0x6b7 uvmfault_amapcopy sys/uvm/uvm_fault.c:250 [inline]
uvm_fault_check(ffff80002a212b20,ffff80002a212b58,ffff80002a212b80) at uvm_fault_check+0x6b7 sys/uvm/uvm_fault.c:710
uvm_fault(fffffd806b283a68,72f8923000,0,1) at uvm_fault+0xf2 sys/uvm/uvm_fault.c:600
upageflttrap(ffff80002a212ca0,72f8923008) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a212ca0) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x722090b107f0, count: -12
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x1e:        addq    $0x8,%rsp
x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e 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+0x27
acpicpu_idle() at acpicpu_idle+0x2f1 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800029cebff0) at sched_idle+0x41d sys/kern/kern_sched.c:183
end trace frame: 0x0, count: 10
ddb{1}> trace
x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e 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+0x27
acpicpu_idle() at acpicpu_idle+0x2f1 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800029cebff0) at sched_idle+0x41d sys/kern/kern_sched.c:183
end trace frame: 0x0, count: -5

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/28 20:27 openbsd b98581f594cd 07b455f9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: pool_do_get: rwobjpl: page empty
2024/04/08 18:36 openbsd e16d075e3f83 7591ebb5 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: pool_do_get: rwobjpl: page empty
* Struck through repros no longer work on HEAD.