syzbot


witness: reversal: vmmaplk fdlock

Status: fixed on 2022/03/15 07:00
Reported-by: syzbot+1709f14b77eb68e2b7e9@syzkaller.appspotmail.com
Fix commit: 447db83cf4f0 Revert holding a read lock on the map while copying out data during sysctl(2).
First crash: 260d, last: 259d

Sample crash report:
login: witness: lock order reversal:
 1st 0xfffffd806bc05310 vmmaplk (&map->lock)
 2nd 0xfffffd80727a9818 fdlock (&newfdp->fd_fd.fd_lock)
lock order "&newfdp->fd_fd.fd_lock"(rwlock) -> "&map->lock"(rwlock) first seen at:
#0  rw_enter_read+0x66 sys/kern/kern_rwlock.c:112
#1  uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758
#2  uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674
#3  uvm_fault+0x102 sys/uvm/uvm_fault.c:602
#4  kpageflttrap+0x209
#5  kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
#6  alltraps_kern_meltdown+0x7b
#7  copyout+0x53
#8  syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8  syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#9  Xsyscall+0x128
lock order "&map->lock"(rwlock) -> "&newfdp->fd_fd.fd_lock"(rwlock) first seen at:
#0  rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
#1  fill_file+0xad2 sys/kern/kern_sysctl.c:1304
#2  sysctl_file+0xe77 sys/kern/kern_sysctl.c:1428
#3  kern_sysctl+0xfd sys/kern/kern_sysctl.c:449
#4  sys_sysctl+0x209 sys/kern/kern_sysctl.c:249
#5  syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5  syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#6  Xsyscall+0x128
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
ddb{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
the kernel did not panic
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
witness_checkorder(fffffd80727a9818,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(fffffd80727a9818,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter_write(fffffd80727a9808) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
fill_file(ffff800000bdb000,fffffd8070867318,fffffd80727a97c0,0,0,ffff80002122cc90,f7fc7cbfaa9e8a68,ff09,ffff80002125d510) at fill_file+0xad2 sys/kern/kern_sysctl.c:1304
sysctl_file(ffff80002136afc8,4,20000080,ffff80002136aff8,ffff80002125d510) at sysctl_file+0xe77 sys/kern/kern_sysctl.c:1428
kern_sysctl(ffff80002136afc4,5,20000080,ffff80002136aff8,0,0,b43cfdb9edbfc67) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449
sys_sysctl(ffff80002125d510,ffff80002136b068,ffff80002136b0c0) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249
syscall(ffff80002136b130) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff80002136b130) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffd0880, count: -9
ddb{1}> show registers
rdi                              0x3
rsi               0xffffffff8294abb0    __sancov_gen_cov_switch_values.134
rbp               0xffff80002136a930
rbx                              0x3
rdx                            0x3fd
rcx                                0
rax                              0x1
r8                0xffff80002136a8a0
r9                0x8080808080808080
r10               0x35543f11baf265c9
r11               0xce4411bd628bfeea
r12               0xffffffff82aad0a0    w_lodata+0x4f730
r13                                0
r14               0xffffffff82aac0d0    w_lodata+0x4e760
r15               0xfffffd8002f62c80
rip               0xffffffff8138d658    db_enter+0x18
cs                               0x8
rflags                         0x246
rsp               0xffff80002136a920
ss                              0x10
db_enter+0x18:  addq    $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.4) pid=63905 stat=onproc
    flags process=10<SUGID> proc=0
    pri=51, usrpri=51, nice=20
    forw=0xffffffffffffffff, list=0xffff80002125dcf0,0xffff80002125caa0
    process=0xffff80002122dd30 user=0xffff800021366000, vmspace=0xfffffd806bc052f8
    estcpu=36, cpticks=0, pctcpu=0.0
    user=0, sys=0, intr=0
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 52356  303522  89667      0  2         0x2                sh
 28979  349356  62783      0  2         0x2                sh
*18136   63905  12198  32767  7        0x10                syz-executor.4
 12654  388444  76224      0  2    0x100002                sh
 62783  422276  30475      0  3        0x80  wait          syz-executor.7
 34620  340152     41      0  7         0x2                ifconfig
    41  203398  30058      0  3    0x10008a  sigsusp       sh
 76224  514343  55613      0  3        0x80  wait          syz-executor.1
 30475    1374  14068      0  3        0x82  wait          syz-executor.7
 59412  495658  36738      0  2    0x100002                sh
 89667  199226  67328      0  3        0x80  wait          syz-executor.5
 78679  444719  50905      0  2    0x100000                sh
 67328  243023  14068      0  3        0x82  wait          syz-executor.5
 96644  350046  89348  32767  3        0x10  biowait       syz-executor.3
 50905  344410  51284      0  3    0x10008a  sigsusp       sh
 55613  293609  14068      0  3        0x82  wait          syz-executor.1
 89348  103627  14068      0  3        0x82  wait          syz-executor.3
 30058  393648  72187      0  3        0x80  wait          syz-executor.2
 36738  168550  24365      0  3        0x80  wait          syz-executor.6
 72187   20424  14068      0  3        0x82  wait          syz-executor.2
 12198  110378  22677  32767  3        0x90  nanoslp       syz-executor.4
 24365  111598  14068      0  3        0x82  wait          syz-executor.6
 51284  342010  79358      0  3        0x80  wait          syz-executor.0
 22677  512289  14068      0  3        0x82  wait          syz-executor.4
 79358  237963  14068      0  3        0x82  wait          syz-executor.0
 14068  466577  16700      0  3        0x82  thrsleep      syz-execprog
 14068  397980  16700      0  3   0x4000082  nanoslp       syz-execprog
 14068  195938  16700      0  3   0x4000082  thrsleep      syz-execprog
 14068     953  16700      0  2   0x4000002                syz-execprog
 14068  512531  16700      0  3   0x4000082  thrsleep      syz-execprog
 14068  407317  16700      0  3   0x4000082  kqread        syz-execprog
 14068  170739  16700      0  3   0x4000082  thrsleep      syz-execprog
 14068  366514  16700      0  3   0x4000082  thrsleep      syz-execprog
 14068  475820  16700      0  3   0x4000082  thrsleep      syz-execprog
 16700  172704  18528      0  3    0x10008a  sigsusp       ksh
 18528  133068  18872      0  3        0x9a  kqread        sshd
 63667  166840      1      0  3    0x100083  ttyin         getty
 18872  155172      1      0  3        0x88  kqread        sshd
  3858  468068  29864     73  3   0x1100090  kqread        syslogd
 29864  243867      1      0  3    0x100082  netio         syslogd
 33228  457017      1      0  3    0x100080  kqread        resolvd
 11047  271755   9289     77  3    0x100092  kqread        dhcpleased
 56836  192066   9289     77  3    0x100092  kqread        dhcpleased
  9289  237318      1      0  3        0x80  kqread        dhcpleased
 24469  176829      0      0  3     0x14200  bored         smr
 57953  139125      0      0  2     0x14200                zerothread
 32622  367411      0      0  3     0x14200  aiodoned      aiodoned
 16047  131887      0      0  3     0x14200  syncer        update
 35238   40407      0      0  3     0x14200  cleaner       cleaner
 24820  422897      0      0  3     0x14200  reaper        reaper
 92118   59825      0      0  3     0x14200  pgdaemon      pagedaemon
 81398    9890      0      0  3     0x14200  bored         viomb
  7822  378920      0      0  3  0x40014200  acpi0         acpi0
 64125  263509      0      0  3  0x40014200                idle1
 45479    5802      0      0  3     0x14200  bored         softnet
 75413  382802      0      0  3     0x14200  bored         systqmp
 50628  431145      0      0  3     0x14200  bored         systq
 85494  112459      0      0  3  0x40014200  bored         softclock
 21085  419039      0      0  3  0x40014200                idle0
     1  241717      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{1}> show all locks
Process 18136 (syz-executor.4) thread 0xffff80002125d510 (63905)
shared rwlock vmmaplk r = 0 (0xfffffd806bc05310)
#0  witness_lock+0x44d
#1  uvm_vslock+0xc8 sys/uvm/uvm_glue.c:129
#2  sys_sysctl+0x2d8 sys/kern/kern_sysctl.c:240
#3  syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3  syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#4  Xsyscall+0x128
exclusive rwlock sysctllk r = 0 (0xffffffff82941f10)
#0  witness_lock+0x44d
#1  rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2  sys_sysctl+0x1b3 sys/kern/kern_sysctl.c:233
#3  syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3  syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#4  Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829de988)
#0  witness_lock+0x44d
#1  syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline]
#1  syscall+0x3ef sys/arch/amd64/amd64/trap.c:585
#2  Xsyscall+0x128
Process 96644 (syz-executor.3) thread 0xffff80002123c548 (350046)
exclusive rrwlock inode r = 0 (0xfffffd806c470c50)
#0  witness_lock+0x44d
#1  rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#3  VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4  ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140
#5  ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347
#6  ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#7  ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162
#8  VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404
#9  domkdirat+0x121 sys/kern/vfs_syscalls.c:3101
#10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806c470920)
#0  witness_lock+0x44d
#1  rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#3  VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4  vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5  vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413
#6  namei+0x36a sys/kern/vfs_lookup.c:245
#7  domkdirat+0x75 sys/kern/vfs_syscalls.c:3086
#8  syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8  syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#9  Xsyscall+0x128
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10165   6404K    6419K  78643K     11255        0
            pcb    13      8K       8K  78643K        13        0
         rtable   112      3K       3K  78643K       180        0
         ifaddr    60     12K      12K  78643K        61        0
       counters    54     35K      35K  78643K        54        0
       ioctlops     0      0K       2K  78643K        27        0
            iov     0      0K       1K  78643K         1        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         4        0
         vnodes  1166     73K      73K  78643K      1179        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     2      1K       1K  78643K         2        0
         VM map     2      1K       1K  78643K         2        0
            sem     2      0K       0K  78643K         2        0
        dirhash    12      2K       2K  78643K        12        0
           ACPI  1697    195K     286K  78643K     12548        0
      file desc    27    101K     110K  78643K        96        0
           proc    56     74K     111K  78643K       353        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
    ip_moptions     0      0K       0K  78643K         1        0
       in_multi    34      2K       2K  78643K        34        0
    ether_multi     1      0K       0K  78643K         1        0
    ISOFS mount     1     32K      32K  78643K         1        0
  MSDOSFS mount     1     16K      16K  78643K         1        0
           ttys    31    148K     148K  78643K        31        0
           exec     0      0K       2K  78643K       545        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     7     26K      26K  78643K         7        0
       UVM amap   210     73K      73K  78643K      2691        0
       UVM aobj     4      2K       2K  78643K         4        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
            NDP    14      0K       0K  78643K        14        0
           temp    49   4692K    4753K  78643K      3746        0
         kqueue    12     18K      18K  78643K        25        0
      SYN cache     2     16K      16K  78643K         2        0
ddb{1}> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache    128       22    0        0     1     0     1     1     0     8    0
rtpcb      120       24    0       21     1     0     1     1     0     8    0
rtentry    112       48    0        1     2     0     2     2     0     8    0
unpcb      136       35    0       22     1     0     1     1     0     8    0
syncache   296        5    0        5     2     1     1     1     0     8    1
tcpcb      736        9    0        5     1     0     1     1     0     8    0
arp        120        7    0        0     1     0     1     1     0     8    0
inpcb      304       44    0       37     1     0     1     1     0     8    0
nd6         48        6    0        0     1     0     1     1     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256      192    0        0    12     0    12    12     0     8    0
art_table   32      193    0        0     2     0     2     2     0     8    0
art_node    16       47    0        4     1     0     1     1     0     8    0
shmpl      112        1    0        0     1     0     1     1     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256     1471    0       48    89     0    89    89     0     8    0
ffsino     272     1471    0       48    95     0    95    95     0     8    0
nchpl      144     1718    0       57    62     0    62    62     0     8    0
uvmvnodes   80     1480    0        0    31     0    31    31     0     8    0
vnodes     224     1480    0        0    88     0    88    88     0     8    0
namei      1024    5344    0     5343     3     1     2     2     0     8    1
percpumem   16       39    0        0     1     0     1     1     0     8    0
scxspl     216     5532    0     5531    27    26     1     8     0     8    0
plimitpl   152       31    0        9     1     0     1     1     0     8    0
sigapl     424      383    0      331     7     0     7     7     0     8    0
knotepl    120      110    0        0     4     0     4     4     0     8    0
kqueuepl   216       21    0       13     1     0     1     1     0     8    0
pipepl     336      130    0      102     4     1     3     3     0     8    0
fdescpl    496      369    0      331     7     1     6     6     0     8    0
filepl     152     1358    0     1228     6     0     6     6     0     8    0
lockfpl    104        6    0        4     1     0     1     1     0     8    0
lockfspl    48        4    0        2     1     0     1     1     0     8    0
sessionpl  144       25    0        9     1     0     1     1     0     8    0
pgrppl      48       25    0        9     1     0     1     1     0     8    0
ucredpl     96       73    0       61     1     0     1     1     0     8    0
zombiepl   144      331    0      331     2     1     1     1     0     8    1
processpl  1064     383    0      331     5     1     4     4     0     8    0
procpl     672      391    0      331     6     0     6     6     0     8    0
sockpl     480      103    0       80     4     0     4     4     0     8    1
mcl8k      8192       4    0        0     1     0     1     1     0     8    0
mcl4k      4096       5    0        0     1     0     1     1     0     8    0
mcl2k      2048      56    0        0     7     0     7     7     0     8    0
mtagpl      96        2    0        0     1     0     1     1     0     8    0
mbufpl     256      190    0        0    11     0    11    11     0     8    0
bufpl      288     3549    0      143   244     0   244   244     0     8    0
anonpl      24    52034    0    46837    48     3    45    46     0   186   10
amapchunkpl 152    5502    0     5071    20     1    19    19     0   158    0
amappl16   200      268    0      178     7     1     6     6     0     8    0
amappl15   192       87    0       80     1     0     1     1     0     8    0
amappl14   184       23    0       18     1     0     1     1     0     8    0
amappl13   176       76    0       68     2     1     1     1     0     8    0
amappl12   168       14    0       12     2     1     1     1     0     8    0
amappl11   160       41    0       29     1     0     1     1     0     8    0
amappl10   152       52    0       47     2     1     1     1     0     8    0
amappl9    144      440    0      437     1     0     1     1     0     8    0
amappl8    136      476    0      448     2     0     2     2     0     8    0
amappl7    128      100    0       89     1     0     1     1     0     8    0
amappl6    120      198    0      176     2     0     2     2     0     8    1
amappl5    112      180    0      168     1     0     1     1     0     8    0
amappl4    104      756    0      719     2     0     2     2     0     8    0
amappl3     96      147    0      137     1     0     1     1     0     8    0
amappl2     88      492    0      451     3     0     3     3     0     8    1
amappl1     80    10048    0     9500    21     3    18    18     0     8    5
amappl      88     2334    0     2173     4     0     4     4     0    92    0
dma4096    4096       1    0        1     1     1     0     1     0     8    0
dma1024    1024       1    0        0     1     0     1     1     0     8    0
dma256     256        6    0        6     1     1     0     1     0     8    0
dma128     128      253    0      253     1     1     0     1     0     8    0
dma64       64        6    0        6     1     1     0     1     0     8    0
dma32       32        7    0        7     1     1     0     1     0     8    0
dma16       16       18    0       17     1     0     1     1     0     8    0
aobjpl      72        3    0        0     1     0     1     1     0     8    0
uaddrrnd    24      369    0      331     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24      369    0      331     1     0     1     1     0     8    0
vmmpekpl   168     8025    0     7999     2     0     2     2     0     8    0
vmmpepl    168    35333    0    33508    99     5    94    94     0   357    9
vmsppl     368      368    0      331     4     0     4     4     0     8    0
rwobjpl     56    11242    0     8852    42     2    40    40     0     8    5
pdppl      4096     745    0      662   123    34    89    89     0     8    6
pvpl        32   223825    0   214442   254     8   246   247     0   265  165
pmappl     248      368    0      331     4     1     3     3     0     8    0
extentpl    40       58    0       38     1     0     1     1     0     8    0
phpool     112      602    0       38    17     0    17    17     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x1a:        addq    $0x8,%rsp
ddb{0}> trace
x86_ipi_db(ffffffff829baff0) 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(ffffffff829de780) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff829de780) at __mp_lock+0x129 sys/kern/kern_lock.c:147
intr_handler(ffff8000213515e0,ffff800000077500) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x16 kd_curproc sys/dev/kcov.c:574 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x16 sys/dev/kcov.c:148
__mp_lock(ffffffff829de780) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff829de780) at __mp_lock+0x133 sys/kern/kern_lock.c:147
intr_handler(ffff800021351740,ffff80000004ad00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xb sys/dev/kcov.c:144
syscall(ffff800021351920) at syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline]
syscall(ffff800021351920) at syscall+0x3ef sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe9f90, count: -13
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
witness_checkorder(fffffd80727a9818,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(fffffd80727a9818,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter_write(fffffd80727a9808) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
fill_file(ffff800000bdb000,fffffd8070867318,fffffd80727a97c0,0,0,ffff80002122cc90,f7fc7cbfaa9e8a68,ff09,ffff80002125d510) at fill_file+0xad2 sys/kern/kern_sysctl.c:1304
sysctl_file(ffff80002136afc8,4,20000080,ffff80002136aff8,ffff80002125d510) at sysctl_file+0xe77 sys/kern/kern_sysctl.c:1428
kern_sysctl(ffff80002136afc4,5,20000080,ffff80002136aff8,0,0,b43cfdb9edbfc67) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449
sys_sysctl(ffff80002125d510,ffff80002136b068,ffff80002136b0c0) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249
syscall(ffff80002136b130) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff80002136b130) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffd0880, count: -9

Crashes (22):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-openbsd-setuid 2022/03/13 00:33 openbsd d895c343d40b 9e8eaa75 .config log report syz witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 19:58 openbsd d895c343d40b 9e8eaa75 .config log report syz witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 16:30 openbsd d895c343d40b 9e8eaa75 .config log report syz witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 15:43 openbsd d895c343d40b 9e8eaa75 .config log report syz witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 15:26 openbsd d895c343d40b 9e8eaa75 .config log report syz witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 15:13 openbsd d895c343d40b 9e8eaa75 .config log report syz witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 14:00 openbsd d895c343d40b 9e8eaa75 .config log report syz witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 13:10 openbsd d895c343d40b 9e8eaa75 .config log report syz witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/13 01:04 openbsd d895c343d40b 9e8eaa75 .config log report witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 20:29 openbsd d895c343d40b 9e8eaa75 .config log report witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 20:23 openbsd d895c343d40b 9e8eaa75 .config log report witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 19:45 openbsd d895c343d40b 9e8eaa75 .config log report witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 16:01 openbsd d895c343d40b 9e8eaa75 .config log report witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 15:09 openbsd d895c343d40b 9e8eaa75 .config log report witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 13:11 openbsd d895c343d40b 9e8eaa75 .config log report witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 13:08 openbsd d895c343d40b 9e8eaa75 .config log report witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 13:07 openbsd d895c343d40b 9e8eaa75 .config log report witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 12:53 openbsd d895c343d40b 9e8eaa75 .config log report witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 12:49 openbsd d895c343d40b 9e8eaa75 .config log report witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 12:47 openbsd d895c343d40b 9e8eaa75 .config log report witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 12:44 openbsd d895c343d40b 9e8eaa75 .config log report witness: reversal: vmmaplk fdlock
ci-openbsd-setuid 2022/03/12 12:43 openbsd d895c343d40b 9e8eaa75 .config log report witness: reversal: vmmaplk fdlock
* Struck through repros no longer work on HEAD.