syzbot


uvm_fault: pool_do_put (3)

Status: auto-obsoleted due to no activity on 2024/02/16 17:41
Reported-by: syzbot+4b617db9aa9a415bbfe8@syzkaller.appspotmail.com
First crash: 161d, last: 161d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: pool_do_put 1 1633d 1633d 0/3 closed as invalid on 2019/11/07 08:07
openbsd uvm_fault: pool_do_put (2) syz 53 1373d 1616d 3/3 fixed on 2020/08/05 06:16

Sample crash report:
uvm_fault(0xfffffd8078e528a8, 0xa, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      pool_do_put+0x115:      movq    0x8(%rbx),%rbx
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
pool_do_put(ffffffff82d5cb80,fffffd806ee82008) at pool_do_put+0x115
pool_put(ffffffff82d5cb80,fffffd806ee82008) at pool_put+0x6b sys/kern/subr_pool.c:799
soclose(fffffd806ee82008,0) at soclose+0x4ba sys/kern/uipc_socket.c:440
soo_close(fffffd8062b70268,ffff8000216a9d58) at soo_close+0x44
fdrop(fffffd8062b70268,ffff8000216a9d58) at fdrop+0xcb sys/kern/kern_descrip.c:1274
closef(fffffd8062b70268,ffff8000216a9d58) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff8000216a9d58) at fdfree+0xf3 sys/kern/kern_descrip.c:1190
exit1(ffff8000216a9d58,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199
sys_exit(ffff8000216a9d58,ffff80002416bf40,ffff80002416bf90) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002416c010) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x787276fe77c0, count: 4
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> 
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: uvm_fault(0xfffffd8078e528a8, 0xa, 0, 1) -> e
ddb> trace
pool_do_put(ffffffff82d5cb80,fffffd806ee82008) at pool_do_put+0x115
pool_put(ffffffff82d5cb80,fffffd806ee82008) at pool_put+0x6b sys/kern/subr_pool.c:799
soclose(fffffd806ee82008,0) at soclose+0x4ba sys/kern/uipc_socket.c:440
soo_close(fffffd8062b70268,ffff8000216a9d58) at soo_close+0x44
fdrop(fffffd8062b70268,ffff8000216a9d58) at fdrop+0xcb sys/kern/kern_descrip.c:1274
closef(fffffd8062b70268,ffff8000216a9d58) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff8000216a9d58) at fdfree+0xf3 sys/kern/kern_descrip.c:1190
exit1(ffff8000216a9d58,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199
sys_exit(ffff8000216a9d58,ffff80002416bf40,ffff80002416bf90) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002416c010) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x787276fe77c0, count: -11
ddb> show registers
rdi                                0
rsi                              0x2
rbp               0xffff80002416bca0
rbx                              0x2
rdx                                0
rcx               0xfffffd80702e93e0
rax               0xffff8000216a9d58
r8                                 0
r9                                 0
r10               0x7277e38d98bfc8ef
r11               0x1bab321bc03df89a
r12               0xfffffd806ee82008
r13               0x59e7f1d5aef25919
r14               0xffffffff82d5cb80    socket_pool
r15               0xfffffd806ee82f90
rip               0xffffffff8210fe15    pool_do_put+0x115
cs                               0x8
rflags                       0x10286    __ALIGN_SIZE+0xf286
rsp               0xffff80002416bbf0
ss                              0x10
pool_do_put+0x115:      movq    0x8(%rbx),%rbx
ddb> show proc
PROC (syz-executor.3) tid=243181 pid=72714 tcnt=1 stat=onproc
    flags process=1008<EXITING,SINGLEEXIT> proc=2000<WEXIT>
    runpri=32, usrpri=79, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0xffff8000216a9d58
    forw=0xffffffffffffffff, list=0xffff800021695d60,0xffff8000216aa2b8
    process=0xffff8000216d4fc0 user=0xffff800024167000, vmspace=0xfffffd8078e528a8
    estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
  1576  139869  14237      0  2           0                syz-executor.5
  1576  149331  14237      0  2   0x4000000                syz-executor.5
 25599  348762  76492      0  3   0x4000080  nanoslp       syz-executor.2
 25599  190628  76492      0  3   0x4000080  fsleep        syz-executor.2
 37442  351851  19212      0  2           0                syz-executor.7
 37442  324095  19212      0  3   0x4000080  fsleep        syz-executor.7
 51296  513303  87339      0  4     0x82000                syz-executor.0
 51296  456198  87339      0  3   0x4082000  kernel: protection fault trap, code=0
Faulted in DDB; continuing...
ddb> show all locks
No such command
ddb> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10312   6964K    8238K  78643K     47694        0
            pcb    13     16K      18K  78643K       914        0
         rtable   242     15K      15K  78643K       908        0
             pf    34      9K      10K  78643K       215        0
         ifaddr    45     12K      13K  78643K       168        0
        ifgroup    59      2K       2K  78643K       340        0
         sysctl     3      0K       0K  78643K        17        0
       counters    30     17K      17K  78643K       118        0
       ioctlops     0      0K       2K  78643K       341        0
            iov     0      0K      18K  78643K       775        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         4        0
         vnodes  1471     92K      92K  78643K     10100        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     2      1K       9K  78643K        66        0
         VM map     2      1K       1K  78643K         2        0
            sem    12      0K       0K  78643K      2698        0
        dirhash    12      2K       2K  78643K        27        0
           ACPI  1697    195K     286K  78643K     12548        0
      file desc    16     57K      69K  78643K     10712        0
          sigio     0      0K       0K  78643K       126        0
           proc    58     59K      75K  78643K      1068        0
        subproc   104      6K       6K  78643K       259        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
    ip_moptions     0      0K       0K  78643K       837        0
       in_multi    99      7K       7K  78643K       429        0
    ether_multi     1      0K       0K  78643K         4        0
            mrt     2      0K       0K  78643K        11        0
    ISOFS mount     1     32K      32K  78643K         1        0
  MSDOSFS mount     1     16K      16K  78643K         1        0
           ttys   223    996K     996K  78643K       223        0
           exec     0      0K       1K  78643K      1584        0
     pfkey data     0      0K       0K  78643K         5        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   446    246K     247K  78643K     99101        0
       UVM aobj   131      4K       4K  78643K       134        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
    ip6_options     2      0K       1K  78643K      3412        0
            NDP    13      0K       1K  78643K       135        0
           temp    75   5916K    6040K  78643K     58032        0
         kqueue    12     18K      34K  78643K       520        0
      SYN cache     2     16K      16K  78643K         2        0
ddb> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb      120      387    0      384     6     5     1     3     0     8    0
rtentry    112      228    0      117     4     0     4     4     0     8    0
unpcb      144    13687    0    13608    71    65     6    10     0     8    3
syncache   312      104    0      104    16    16     0     1     0     8    0
tcpqe       32      374    0      374    15    15     0     2     0     8    0
tcpcb      808     6929    0     6910   109   104     5    18     0     8    2
arp         88       38    0       19     1     0     1     1     0     8    0
ipq         40       16    0       15     5     4     1     1     0     8    0
ipqe        40       50    0       49     5     4     1     1     0     8    0
inpcb      336    11486    0    11461   126   118     8    19     0     8    5
nd6        104       60    0       36     1     0     1     1     0     8    0
pkpcb       40       34    0       34     6     5     1     1     0     8    1
kcovpl      48       17    0        9     1     0     1     1     0     8    0
ppxss      1160      38    0       38     9     8     1     1     0     8    1
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256      905    0      440    32     2    30    30     0     8    0
art_table   32      906    0      440     4     0     4     4     0     8    0
art_node    16      220    0      119     1     0     1     1     0     8    0
sysvmsgpl   40       62    0       26     1     0     1     1     0     8    0
semapl     112     2696    0     2686     1     0     1     1     0     8    0
shmpl      112      131    0        3     4     0     4     4     0     8    0
dirhash    1024      27    0       10     3     0     3     3     0     8    0
dino2pl    256    15638    0    14168    93     0    93    93     0     8    0
ffsino     240    15638    0    14168    87     0    87    87     0     8    0
nchpl      144    35457    0    34973    63    41    22    63     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  103339    0   103339     8     7     1     3     0     8    1
vcpupl     2048      40    0        0     5     0     5     5     0     8    0
vmpool     664       67    0       27     4     0     4     4     0     8    0
kstatmem   264      202    0      176     4     1     3     3     0     8    1
scxspl     216    90292    0    90292    21    20     1     8     1     8    1
plimitpl   152      777    0      762     1     0     1     1     0     8    0
sigapl     424    11200    0    11135     8     0     8     8     0     8    0
futexpl     64   138641    0   138639     3     2     1     1     0     8    0
knotepl    120    94576    0    94496    34    31     3    16     0     8    0
kqueuepl   184     1524    0     1516    20    19     1     6     0     8    0
pipepl     288     6565    0     6537    51    44     7    12     0     8    4
fdescpl    432    10979    0    10952     6     2     4     4     0     8    0
filepl     120    80951    0    80640    99    84    15    19     0     8    5
lockfpl    104    12760    0    12755    22    20     2     4     0     8    1
lockfspl    48     5606    0     5601     4     3     1     2     0     8    0
sessionpl  144       34    0       18     1     0     1     1     0     8    0
pgrppl      48      181    0      165     1     0     1     1     0     8    0
ucredpl    104     6414    0     6399     1     0     1     1     0     8    0
zombiepl   144    11136    0    11135     3     2     1     1     0     8    0
processpl  1008   11200    0    11135    10     1     9     9     0     8    0
procpl     680    26354    0    26270    18     9     9     9     0     8    1
sosppl     168       73    0       70     7     6     1     1     0     8    0
sockpl     456    25600    0    25495   361   347    14    35     0     8    0
sockpl: pool(0xffffffff82d5cb80:sockpl): page inconsistency: page 0xfffffd806ee82000; item ordinal 0; addr 0x2
mcl64k     65536    310    0      310    14    13     1     1     0     8    1
mcl16k     16384    252    0      252    15    14     1     1     0     8    1
mcl12k     12288    430    0      430    12    11     1     1     0     8    1
mcl9k      9216     223    0      223    15    15     0     1     0     8    0
mcl8k      8192    2670    0     2670     8     7     1     1     0     8    1
mcl4k      4096    1246    0     1245    10     9     1     2     0     8    0
mcl2k2     2112      63    0       63    19    18     1     1     0     8    1
mcl2k      2048   90177    0    90066    95    74    21    45     0     8    0
mtagpl      96     9919    0     8237    49     7    42    44     0     8    0
mbufpl     256   262874    0   260952   333   204   129   173     0     8    5
bufpl      288    20876    0    14482   458     0   458   458     0     8    0
anonpl      24   997275    0   983269   158    66    92   112     0   188    0
amapchunkpl 152  314999    0   314117    89    51    38    46     0   158    2
amappl16   200    18558    0    18107    58    34    24    33     0     8    0
amappl15   192       26    0       25     2     1     1     1     0     8    0
amappl14   184      182    0      170     2     1     1     2     0     8    0
amappl13   176       14    0       14     2     2     0     1     0     8    0
amappl12   168    11749    0    11721     2     0     2     2     0     8    0
amappl11   160       54    0       44     1     0     1     1     0     8    0
amappl10   152       30    0       22     2     1     1     1     0     8    0
amappl9    144      232    0      230     1     0     1     1     0     8    0
amappl8    136      584    0      466     5     0     5     5     0     8    0
amappl7    128      206    0      185     2     0     2     2     0     8    0
amappl6    120      470    0      457     1     0     1     1     0     8    0
amappl5    112      261    0      252     1     0     1     1     0     8    0
amappl4    104      685    0      662     2     1     1     2     0     8    0
amappl3     96    62400    0    62310     3     0     3     3     0     8    0
amappl2     88    14105    0    14027     3     1     2     3     0     8    0
amappl1     80    46690    0    46183    22    10    12    22     0     8    0
amappl      88    98244    0    97988     7     0     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      133    0        3     3     0     3     3     0     8    0
uaddrrnd    24    11046    0    10979     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24    11046    0    10979     1     0     1     1     0     8    0
vmmpekpl   168    93403    0    93323     4     0     4     4     0     8    0
vmmpepl    168   633088    0   630746   217   109   108   123     0   357    0
vmsppl     368    11045    0    10979     9     2     7     7     0     8    0
rwobjpl     24   150656    0   143074    48     1    47    47     0     8    0
pdppl      4096   22098    0    21998   372   268   104   104     0     8    4
pvpl        32  2866624    0  2846856   417   249   168   320     0   265    1
pmappl     216    11045    0    10979     4     0     4     4     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112     1866    0      893    30     0    30    30     0     8    0
ddb> machine ddbcpu 0
No such command
ddb> trace
pool_do_put(ffffffff82d5cb80,fffffd806ee82008) at pool_do_put+0x115
pool_put(ffffffff82d5cb80,fffffd806ee82008) at pool_put+0x6b sys/kern/subr_pool.c:799
soclose(fffffd806ee82008,0) at soclose+0x4ba sys/kern/uipc_socket.c:440
soo_close(fffffd8062b70268,ffff8000216a9d58) at soo_close+0x44
fdrop(fffffd8062b70268,ffff8000216a9d58) at fdrop+0xcb sys/kern/kern_descrip.c:1274
closef(fffffd8062b70268,ffff8000216a9d58) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff8000216a9d58) at fdfree+0xf3 sys/kern/kern_descrip.c:1190
exit1(ffff8000216a9d58,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199
sys_exit(ffff8000216a9d58,ffff80002416bf40,ffff80002416bf90) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002416c010) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x787276fe77c0, count: -11
ddb> machine ddbcpu 1
No such command
ddb> trace
pool_do_put(ffffffff82d5cb80,fffffd806ee82008) at pool_do_put+0x115
pool_put(ffffffff82d5cb80,fffffd806ee82008) at pool_put+0x6b sys/kern/subr_pool.c:799
soclose(fffffd806ee82008,0) at soclose+0x4ba sys/kern/uipc_socket.c:440
soo_close(fffffd8062b70268,ffff8000216a9d58) at soo_close+0x44
fdrop(fffffd8062b70268,ffff8000216a9d58) at fdrop+0xcb sys/kern/kern_descrip.c:1274
closef(fffffd8062b70268,ffff8000216a9d58) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff8000216a9d58) at fdfree+0xf3 sys/kern/kern_descrip.c:1190
exit1(ffff8000216a9d58,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199
sys_exit(ffff8000216a9d58,ffff80002416bf40,ffff80002416bf90) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002416c010) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x787276fe77c0, count: -11

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/11/18 17:40 openbsd 0a5044de2e52 cb976f63 .config console log report ci-openbsd-main uvm_fault: pool_do_put
* Struck through repros no longer work on HEAD.