syzbot


protection_fault: solock_shared

Status: upstream: reported on 2024/04/15 04:34
Reported-by: syzbot+b7ef44521c90d0740ba3@syzkaller.appspotmail.com
First crash: 70d, last: 67d

Sample crash report:
kernel: protection fault trap, code=0
Stopped at      solock_shared+0x1c:     movq    0x8(%r12),%rax
ddb{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
the kernel did not panic
ddb{1}> trace
solock_shared(ffff800010fdc2a8) at solock_shared+0x1c sys/kern/uipc_socket2.c:351
soreceive(ffff800010fdc2a8,0,ffff8000324f0d88,0,0,ffff8000324f0c9c,6d59710a1c86080b) at soreceive+0x690 sys/kern/uipc_socket.c:932
fifo_read(ffff8000324f0cf0) at fifo_read+0xd2 sys/miscfs/fifofs/fifo_vnops.c:256
VOP_READ(fffffd805c8f78b8,ffff8000324f0d88,64,fffffd807f7d72d8) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227
vn_rdwr(0,fffffd805c8f78b8,ffff80001f052000,200,0,1,899544dd1390dbf3,0,ffff8000006aa000,0) at vn_rdwr+0x10a
vndstrategy(fffffd8065b38b28) at vndstrategy+0x3e2 sys/dev/vnd.c:342
readdoslabel(fffffd8065b38b28,ffffffff81538c60,ffff800000e4fe00,0,1) at readdoslabel+0x79 readdisksector sys/kern/subr_disk.c:323 [inline]
readdoslabel(fffffd8065b38b28,ffffffff81538c60,ffff800000e4fe00,0,1) at readdoslabel+0x79 sys/kern/subr_disk.c:354
readdisklabel(2902,ffffffff81538c60,ffff800000e4fe00,1) at readdisklabel+0x16b sys/arch/amd64/amd64/disksubr.c:99
vndioctl(2902,41946472,ffff800000e4fe00,1,ffff8000ffff1740) at vndioctl+0x4d8 sys/dev/vnd.c:619
VOP_IOCTL(fffffd806e417eb8,41946472,ffff800000e4fe00,1,fffffd807f7d78f0,ffff8000ffff1740) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806a710e48,41946472,ffff800000e4fe00,ffff8000ffff1740) at vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525
sys_ioctl(ffff8000ffff1740,ffff8000324f1d70,ffff8000324f1cc0) at sys_ioctl+0x4a9
syscall(ffff8000324f1d70) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff8000324f1d70) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xc1c803a5970, count: -14
ddb{1}> show registers
rdi               0xffff80002d6c4000
rsi                            0x95d
rbp               0xffff8000324f0b60
rbx                                0
rdx               0xffff80002d6c4000
rcx                            0x95c
rax               0xffffffff81f01af9    solock_shared+0x19
r8                             0x400
r9                               0x1
r10               0x5ae5162676691534
r11               0x4fe5d8384dd78da5
r12               0x3249c62dd5aa3bf1
r13                              0x1
r14               0xffff800010fdc2a8
r15                             0x85
rip               0xffffffff81f01afc    solock_shared+0x1c
cs                               0x8
rflags                       0x10246    __ALIGN_SIZE+0xf246
rsp               0xffff8000324f0b30
ss                              0x10
solock_shared+0x1c:     movq    0x8(%r12),%rax
ddb{1}> show proc
PROC (syz-executor.3) tid=204349 pid=4615 tcnt=3 stat=onproc
    flags process=8000000 proc=4000000<THREAD>
    runpri=24, usrpri=79, slppri=24, nice=20
    wchan=0x0, wmesg=, ps_single=0x0
    forw=0xffffffffffffffff, list=0xffff8000ffff0030,0xffff8000ffff1230
    process=0xffff80002a15ac68 user=0xffff8000324ec000, vmspace=0xfffffd8067812c20
    estcpu=29, cpticks=2, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 15644  316006  68183      0  7   0x8000000                syz-executor.4
 15644  476357  68183      0  2   0xc000000                syz-executor.4
 65266  368105  58877      0  2   0x8000000                syz-executor.2
 48288  292012  56184      0  2   0x8000000                syz-executor.7
 48288  523850  56184      0  3   0xc000080  fsleep        syz-executor.7
 52058  414943  25249  60928  2   0x8000010                syz-executor.0
 52058  265661  25249  60928  3   0xc000090  kqsel         syz-executor.0
  2455  193693  68544      0  3   0x8000080  nanoslp       syz-executor.6
  2455  117474  68544      0  3   0xc000080  sbwait        syz-executor.6
  2455  105032  68544      0  3   0xc000080  fsleep        syz-executor.6
  4615  102037  29378      0  3   0x8000080  nanoslp       syz-executor.3
* 4615  204349  29378      0  7   0xc000000                syz-executor.3
  4615  344610  29378      0  3   0xc000080  fsleep        syz-executor.3
 29378  360962  60085      0  3   0x8000082  nanoslp       syz-executor.3
 68544  166817  60085      0  3   0x8000082  nanoslp       syz-executor.6
 94067  214390  60085      0  3   0x8000082  nanoslp       syz-executor.1
   430  229894  60085      0  2   0x8000002                syz-executor.5
 25249    5970  60085      0  3   0x8000082  nanoslp       syz-executor.0
 68183   95315  60085      0  3   0x8000082  nanoslp       syz-executor.4
 56184  489836  60085      0  3   0x8000082  nanoslp       syz-executor.7
 58877  186422  60085      0  3   0x8000082  nanoslp       syz-executor.2
 74342   60492      0      0  3     0x14200  bored         sosplice
 60085  376558  17891      0  3  0x1a000082  thrsleep      syz-fuzzer
 60085  467310  17891      0  3  0x1e000082  nanoslp       syz-fuzzer
 60085  108087  17891      0  3  0x1e000082  wait          syz-fuzzer
 60085  314555  17891      0  3  0x1e000082  thrsleep      syz-fuzzer
 60085  434836  17891      0  3  0x1e000082  wait          syz-fuzzer
 60085  294097  17891      0  3  0x1e000082  wait          syz-fuzzer
 60085  228539  17891      0  3  0x1e000082  thrsleep      syz-fuzzer
 60085   43354  17891      0  3  0x1e000082  kqread        syz-fuzzer
 60085  213612  17891      0  3  0x1e000082  wait          syz-fuzzer
 60085  172098  17891      0  3  0x1e000082  thrsleep      syz-fuzzer
 60085  131279  17891      0  3  0x1e000082  thrsleep      syz-fuzzer
 60085  398282  17891      0  3  0x1e000082  wait          syz-fuzzer
 60085  446336  17891      0  3  0x1e000082  wait          syz-fuzzer
 60085  383948  17891      0  3  0x1e000082  wait          syz-fuzzer
 60085  376704  17891      0  3  0x1e000082  thrsleep      syz-fuzzer
 60085   94749  17891      0  3  0x1e000082  wait          syz-fuzzer
 17891  512454  20615      0  3   0x810008a  sigsusp       ksh
 20615  378221  35126      0  3  0x1800009a  kqread        sshd
 32456  467935      1      0  3  0x18100083  ttyin         getty
 35126   54952      1      0  3  0x18000088  kqread        sshd
 29332  361456  22693     74  3  0x19100092  bpf           pflogd
 22693  471218      1      0  3  0x18000080  sbwait        pflogd
 55364  209207  89082     73  3  0x19100090  kqread        syslogd
 89082  231025      1      0  3  0x18100082  sbwait        syslogd
 84808   25282      1      0  3  0x18100080  kqread        resolvd
 50793  396087  79838     77  3  0x18100092  kqread        dhcpleased
 80965  208935  79838     77  3  0x18100092  kqread        dhcpleased
 79838   76847      1      0  3  0x18000080  kqread        dhcpleased
  9793  352759      0      0  3     0x14200  bored         smr
 85880  496330      0      0  2     0x14200                zerothread
  2372  191782      0      0  3     0x14200  aiodoned      aiodoned
 96377  275903      0      0  3     0x14200  syncer        update
 73305  193654      0      0  3     0x14200  cleaner       cleaner
 49823  367184      0      0  3     0x14200  reaper        reaper
 87750  311664      0      0  3     0x14200  pgdaemon      pagedaemon
 26003  458322      0      0  3     0x14200  bored         viomb
  3392   46577      0      0  3  0x40014200  acpi0         acpi0
 37240  129789      0      0  3  0x40014200                idle1
 63273   29940      0      0  3     0x14200  bored         softnet3
 28921  516599      0      0  3     0x14200  bored         softnet2
 51609  517289      0      0  3     0x14200  bored         softnet1
 47434   73062      0      0  3     0x14200  bored         softnet0
 35103  191319      0      0  3     0x14200  bored         systqmp
 48940  174596      0      0  3     0x14200  bored         systq
 71234  504772      0      0  3     0x14200  tmoslp        softclockmp
 84053  414690      0      0  3  0x40014200  tmoslp        softclock
 35758  334439      0      0  3  0x40014200                idle0
     1    6605      0      0  3   0x8080082  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{1}> show all locks
Process 4615 (syz-executor.3) thread 0xffff8000ffff1740 (204349)
Process 430 (syz-executor.5) thread 0xffff80002a1af208 (229894)
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10222   6654K    6913K 166960K     16001        0
            pcb    17     18K      20K 166960K      1129        0
         rtable   267     17K      17K 166960K      2387        0
             pf    43     11K      12K 166960K       285        0
         ifaddr    51     16K      17K 166960K       324        0
        ifgroup    76      3K       3K 166960K       489        0
         sysctl     4      1K       1K 166960K        18        0
       counters    74     37K      38K 166960K       288        0
       ioctlops     1      0K       4K 166960K      1781        0
            iov     0      0K      18K 166960K       372        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1474     93K      93K 166960K      4997        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K       9K 166960K       108        0
         VM map     2      1K       1K 166960K         2        0
            sem    19      1K       1K 166960K       143        0
        dirhash    12      2K       2K 166960K        90        0
           ACPI  1697    195K     286K 166960K     12548        0
      file desc    16     57K     109K 166960K      5921        0
          sigio     0      0K       0K 166960K       123        0
           proc    72    103K     189K 166960K      2416        0
        subproc   104      6K       8K 166960K       813        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     0      0K       0K 166960K      1261        0
       in_multi    89      6K       7K 166960K      1024        0
    ether_multi     1      0K       0K 166960K        68        0
            mrt     3      0K       0K 166960K        31        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys   109    493K     493K 166960K       109        0
           exec     0      0K       1K 166960K      1758        0
     pfkey data     0      0K       0K 166960K         4        0
            tdb     3      0K       0K 166960K         3        0
        VM swap     8     62K      64K 166960K        10        0
       UVM amap   338    318K     319K 166960K     52953        0
       UVM aobj   113      3K       4K 166960K       135        0
     pinsyscall    40     80K     108K 166960K      8442        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       1K 166960K       470        0
            NDP    17      0K       2K 166960K       241        0
           temp    75   6816K    7316K 166960K    183836        0
         kqueue    14     20K      32K 166960K       851        0
      SYN cache     2     16K      16K 166960K         2        0
ddb{1}> 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      565    0      562     1     0     1     1     0     8    0
rtentry    112      801    0      684     6     2     4     4     0     8    0
unpcb      144     3836    0     3818    19    17     2     4     0     8    1
syncache   336        4    0        4     1     1     0     1     0     8    0
tcpqe       32       29   54       29     2     2     0     1     0     8    0
tcpcb      808     1925    0     1920    39    37     2     8     0     8    1
arp        120      161    0      132     1     0     1     1     0     8    0
inpcb      392     7068    0     7060   101    92     9    18     0     8    8
nd6        136      203    0      179     1     0     1     1     0     8    0
pkpcb       40       29    0       29    17    17     0     1     0     8    0
kcovpl      48       61    0       53     1     0     1     1     0     8    0
ppxss      1168      19    0       19    10    10     0     1     0     8    0
pffrag     232      101    0       97     3     2     1     1     0   482    0
pffrnode    88       62    0       59     3     2     1     1     0     8    0
pffrent     40     1070    0     1029     2     1     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      534    0      458     1     0     1     1     0     8    0
pfstkey    128      534    0      458     4     1     3     3     0     8    0
pfstate    376      534    0      458    13     3    10    10     0     8    0
pfrule     1344      21    0       16     2     1     1     2     0     8    0
art_heap8  4096       3    0        2     3     2     1     3     0     8    0
art_heap4  256     3021    0     2557    63    34    29    30     0     8    0
art_table   32     3024    0     2559     6     2     4     4     0     8    0
art_node    16      784    0      682     1     0     1     1     0     8    0
semupl     112        5    0        5     3     3     0     1     0     8    0
semapl     112      136    0      119     1     0     1     1     0     8    0
shmpl      112      132    0       22     4     0     4     4     0     8    0
dirhash    1024      69    0       52     3     0     3     3     0     8    0
dino2pl    256    11011    0     9465    98     0    98    98     0     8    0
ffsino     272    11011    0     9465   106     2   104   104     0     8    0
nchpl      144    19841    0    19229    67    41    26    67     0     8    0
uvmvnodes   80     9131    0        0   187     0   187   187     0     8    0
vnodes     216     9131    0        0   508     0   508   508     0     8    0
namei      1024   66981    0    66981    13    12     1     2     0     8    1
percpumem   16      158    0      107     1     0     1     1     0     8    0
vcpupl     3904      29    0        0     4     0     4     4     0     8    0
vmpool     696       46    0       17     4     1     3     3     0     8    0
kstatmem   264      248    0      214     7     4     3     3     0     8    0
scsiplug    72       17    0       17    11    11     0     1     0     8    0
scxspl     216   125487    0   125487    27    24     3     8     1     8    3
plimitpl   152      775    0      757     1     0     1     1     0     8    0
sigapl     424     6153    0     6104    10     3     7     9     0     8    0
futexpl     64    88755    0    88752     7     6     1     1     0     8    0
knotepl    120      962    0        0    19     0    19    19     0     8    0
kqueuepl   216     1624    0     1613     5     4     1     3     0     8    0
pipepl     320     1028    0     1000     4     1     3     4     0     8    0
fdescpl    496     6110    0     6081     6     1     5     6     0     8    0
filepl     152    38771    0    38519    47    31    16    17     0     8    4
lockfpl    104     2074    0     2072     1     0     1     1     0     8    0
lockfspl    48      732    0      730     1     0     1     1     0     8    0
sessionpl  144       74    0       57     1     0     1     1     0     8    0
pgrppl      48      218    0      201     1     0     1     1     0     8    0
ucredpl    104     5674    0     5659     1     0     1     1     0     8    0
zombiepl   144     6105    0     6104     2     1     1     1     0     8    0
processpl  1136    6153    0     6104     6     1     5     6     0     8    0
procpl     656    12831    0    12760    12     4     8    10     0     8    1
srpgc       96       44    0       44    13    13     0     1     0     8    0
sosppl     168       75    0       75    26    26     0     1     0     8    0
sockpl     664    11564    0    11535    85    74    11    17     0     8    8
mcl64k     65536      6    0        0     1     0     1     1     0     8    0
mcl16k     16384      2    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       5    0        0     1     0     1     1     0     8    0
mcl4k      4096       6    0        0     1     0     1     1     0     8    0
mcl2k2     2112       1    0        0     1     0     1     1     0     8    0
mcl2k      2048     566    0        0    49     8    41    49     0     8    1
mtagpl      96       76    0        0     2     0     2     2     0     8    0
mbufpl     256     1456    0        0    75     0    75    75     0     8    0
bufpl      280    19342    0    10209   653     0   653   653     0     8    0
anonpl      24   930570    0   924026   229   161    68   134     0   186    2
amapchunkpl 152  174152    0   173443   150   111    39    56     0   158    6
amappl16   200    23480    0    23334   180   168    12    33     0     8    0
amappl15   192       89    0       89     2     2     0     1     0     8    0
amappl14   184      392    0      377     2     1     1     2     0     8    0
amappl13   176       13    0       13     2     2     0     1     0     8    0
amappl12   168     7574    0     7543     4     2     2     3     0     8    0
amappl11   160       63    0       49     1     0     1     1     0     8    0
amappl10   152      112    0      103     1     0     1     1     0     8    0
amappl9    144      369    0      369     3     3     0     1     0     8    0
amappl8    136      311    0      269     2     0     2     2     0     8    0
amappl7    128       67    0       51     1     0     1     1     0     8    0
amappl6    120     1095    0     1078     3     2     1     2     0     8    0
amappl5    112      376    0      361     1     0     1     1     0     8    0
amappl4    104      961    0      922     2     0     2     2     0     8    0
amappl3     96    31720    0    31635     3     0     3     3     0     8    0
amappl2     88     6685    0     6609     5     3     2     4     0     8    0
amappl1     80    30436    0    29887    23    10    13    23     0     8    0
amappl      88    51631    0    51415     8     2     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      134    0       22     3     0     3     3     0     8    0
uaddrrnd    24     6157    0     6099     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     6157    0     6099     1     0     1     1     0     8    0
vmmpekpl   168    44936    0    44872     4     0     4     4     0     8    0
vmmpepl    168   387737    0   385706   210   106   104   118     0   357    0
vmsppl     440     6156    0     6099     9     2     7     7     0     8    0
rwobjpl     56   104724    0    94267   176    28   148   151     0     8    0
pdppl      4096   12321    0    12227   328   230    98   112     0     8    4
pvpl        32    45283    0        0   367     1   366   366     0   265    0
pmappl     248     6156    0     6099     4     0     4     4     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112      795    0      338    14     0    14    14     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x1e:        addq    $0x8,%rsp
ddb{0}> trace
x86_ipi_db(ffffffff82cddff0) 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
end of kernel
end trace frame: 0x72c7ef814710, count: -3
ddb{0}> machine ddbcpu 1
Stopped at      solock_shared+0x1c:     movq    0x8(%r12),%rax
ddb{1}> trace
solock_shared(ffff800010fdc2a8) at solock_shared+0x1c sys/kern/uipc_socket2.c:351
soreceive(ffff800010fdc2a8,0,ffff8000324f0d88,0,0,ffff8000324f0c9c,6d59710a1c86080b) at soreceive+0x690 sys/kern/uipc_socket.c:932
fifo_read(ffff8000324f0cf0) at fifo_read+0xd2 sys/miscfs/fifofs/fifo_vnops.c:256
VOP_READ(fffffd805c8f78b8,ffff8000324f0d88,64,fffffd807f7d72d8) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227
vn_rdwr(0,fffffd805c8f78b8,ffff80001f052000,200,0,1,899544dd1390dbf3,0,ffff8000006aa000,0) at vn_rdwr+0x10a
vndstrategy(fffffd8065b38b28) at vndstrategy+0x3e2 sys/dev/vnd.c:342
readdoslabel(fffffd8065b38b28,ffffffff81538c60,ffff800000e4fe00,0,1) at readdoslabel+0x79 readdisksector sys/kern/subr_disk.c:323 [inline]
readdoslabel(fffffd8065b38b28,ffffffff81538c60,ffff800000e4fe00,0,1) at readdoslabel+0x79 sys/kern/subr_disk.c:354
readdisklabel(2902,ffffffff81538c60,ffff800000e4fe00,1) at readdisklabel+0x16b sys/arch/amd64/amd64/disksubr.c:99
vndioctl(2902,41946472,ffff800000e4fe00,1,ffff8000ffff1740) at vndioctl+0x4d8 sys/dev/vnd.c:619
VOP_IOCTL(fffffd806e417eb8,41946472,ffff800000e4fe00,1,fffffd807f7d78f0,ffff8000ffff1740) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806a710e48,41946472,ffff800000e4fe00,ffff8000ffff1740) at vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525
sys_ioctl(ffff8000ffff1740,ffff8000324f1d70,ffff8000324f1cc0) at sys_ioctl+0x4a9
syscall(ffff8000324f1d70) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff8000324f1d70) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xc1c803a5970, count: -14

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/17 20:08 openbsd 456e8b6ad58e acc528cb .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore protection_fault: solock_shared
2024/04/15 04:34 openbsd 56d65d052d3a c8349e48 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore protection_fault: solock_shared
* Struck through repros no longer work on HEAD.