syzbot


witness: denied attempt to set clock forward to ADDR (3)

Status: upstream: reported on 2025/09/29 16:28
Reported-by: syzbot+31c7e5ec45a96120d9f8@syzkaller.appspotmail.com
First crash: 66d, last: 66d
Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd witness: denied attempt to set clock forward to ADDR -1 1 511d 511d 0/3 auto-obsoleted due to no activity on 2024/10/09 20:43
openbsd witness: denied attempt to set clock forward to ADDR (2) -1 1 225d 225d 0/3 auto-obsoleted due to no activity on 2025/07/23 10:00

Sample crash report:
witness: denied attempt to set clock forward to 52172937113390
lock order reversal:
denied attempt to set clock forward to 52172937113390
 1st 0xffff8000fffeacd0 fdlock (&newfdp->fd_fd.fd_lock)
denied attempt to set clock forward to 52172937113390
 2nd 0xfffffd806e155110 inode (&ip->i_lock)
denied attempt to set clock forward to 52172937113390
lock order [1] fdlock (&newfdp->fd_fd.fd_lock) -> [2] inode (&ip->i_lock)
lock order data 0xffffffff833688fe -> 0xffffffff833590b5 is missing
lock order [2] inode (&ip->i_lock) -> [3] sbufrcv (&so->so_rcv.sb_lock)
#0  rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
#1  sblock+0xb6 sys/kern/uipc_socket2.c:536
#2  soreceive+0x27d sys/kern/uipc_socket.c:870
#3  fifo_read+0x117 sys/miscfs/fifofs/fifo_vnops.c:264
#4  VOP_READ+0x101 sys/kern/vfs_vops.c:227
#5  vn_rdwr+0x15b sys/kern/vfs_vnops.c:-1
#6  vndsetcred+0xa1 sys/dev/vnd.c:685
#7  vndioctl+0xdfb sys/dev/vnd.c:486
#8  VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
#9  vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531
#10 sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#11 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#11 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
#12 Xsyscall+0x128
lock order [3] sbufrcv (&so->so_rcv.sb_lock) -> [1] fdlock (&newfdp->fd_fd.fd_lock)
#0  rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
#1  unp_externalize+0x3cf sys/kern/uipc_usrreq.c:1074
#2  soreceive+0xc24 sys/kern/uipc_socket.c:1009
#3  recvit+0x40b sys/kern/uipc_syscalls.c:1078
#4  sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878
#5  syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5  syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
#6  Xsyscall+0x128
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
ddb{0}> 
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
the kernel did not panic
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
witness_checkorder(fffffd806e155110,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806e1550f8,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806e1550f8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd806426e488,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd806426e488,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vn_closefile(fffffd8067b635e8,ffff80003c40fcc8) at vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd8067b635e8,ffff80003c40fcc8) at vn_closefile+0x111 sys/kern/vfs_vnops.c:615
fdrop(fffffd8067b635e8,ffff80003c40fcc8) at fdrop+0x121 sys/kern/kern_descrip.c:1280
knote_remove(ffff80003c40fcc8,fffffd806f022000,fffffd806f022090,8,0) at knote_remove+0x449 sys/kern/kern_event.c:2168
knote_fdclose(ffff80003c40fcc8,8) at knote_fdclose+0xf9 sys/kern/kern_event.c:2203
fdrelease(ffff80003c40fcc8,8) at fdrelease+0xf9 sys/kern/kern_descrip.c:760
syscall(ffff80002f7d2630) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002f7d2630) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x81d72690670, count: -13
ddb{0}> show registers
rdi                                0
rsi                          0x80000    acpi_pdirpa+0x6be71
rbp               0xffff80002f7d2140
rbx                                0
rdx               0xffff800001453940
rcx               0xffff80003c40fcc8
rax                          0x7ffff    acpi_pdirpa+0x6be70
r8                0xffff80002f7d2020
r9                0x8080808080808080
r10               0x970bdc2e1a81af90
r11               0xdd7736fc902aac7a
r12               0xfffffd8003f10d00
r13               0xfffffd80046fdb48
r14                              0x3
r15               0xffffffff833edc9a    substchar+0x7e59
rip               0xffffffff830559f5    db_enter+0x25
cs                               0x8
rflags                         0x246
rsp               0xffff80002f7d2130
ss                              0x10
db_enter+0x25:  addq    $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor) tid=400013 pid=76962 tcnt=4 stat=onproc
    flags process=0 proc=4000000<THREAD>
    runpri=32, usrpri=86, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff80003c40e2d8,0xffff800033be8570
    process=0xffff8000fffeeb68 user=0xffff80002f7cd000, vmspace=0xfffffd806b987b88
    estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 68518  373302  29497      0  2           0                syz-executor
 68518  117641  29497      0  3   0x4000080  fsleep        syz-executor
  7756    8854  56490      0  2           0                syz-executor
  7756  318783  56490      0  7   0x4000000                syz-executor
  7756  338936  56490      0  3   0x4000080  fsleep        syz-executor
 76962  503235  77882      0  2           0                syz-executor
 76962  253865  77882      0  3   0x4000080  msgwait       syz-executor
*76962  400013  77882      0  7   0x4000000                syz-executor
 76962  124400  77882      0  3   0x4000080  fsleep        syz-executor
 51823   73480   8949     -1  2        0x10                syz-executor
 51823  235515   8949     -1  3   0x4000090  fsleep        syz-executor
 51823   19897   8949     -1  3   0x4000090  fsleep        syz-executor
 51823  295414   8949     -1  3   0x4000090  fsleep        syz-executor
 45697  290409  61187      0  3        0x80  nanoslp       syz-executor
 45697  353572  61187      0  3   0x4000080  fsleep        syz-executor
 45697  308171  61187      0  2   0x4000000                syz-executor
 45697  482370  61187      0  3   0x4000080  fsleep        syz-executor
 59929   68224      0      0  3     0x14200  acct          acct
 56490  228304  56871      0  3        0x82  nanoslp       syz-executor
 54683  459704  56871      0  3        0x82  nanoslp       syz-executor
 94490  319045      0      0  3     0x14280  nfsidl        nfsio
 54830  370895      0      0  3     0x14280  nfsidl        nfsio
 18608  279774      0      0  3     0x14280  nfsidl        nfsio
 21826  451731      0      0  3     0x14280  nfsidl        nfsio
 47148  312562      0      0  3     0x14280  nfsidl        nfsio
 81623  128076      0      0  3     0x14280  nfsidl        nfsio
  7894   21037      0      0  3     0x14280  nfsidl        nfsio
 53469  153589      0      0  3     0x14280  nfsidl        nfsio
 41159  478685      0      0  3     0x14280  nfsidl        nfsio
 82747  520573      0      0  3     0x14280  nfsidl        nfsio
 57657  235139      0      0  3     0x14280  nfsidl        nfsio
 32778  168806      0      0  3     0x14280  nfsidl        nfsio
 96048  508628      0      0  3     0x14280  nfsidl        nfsio
 56177  367942      0      0  3     0x14280  nfsidl        nfsio
   731  424859      0      0  3     0x14280  nfsidl        nfsio
 66544  306759      0      0  3     0x14280  nfsidl        nfsio
 11949   19141      0      0  3     0x14280  nfsidl        nfsio
 86799   45099      0      0  3     0x14280  nfsidl        nfsio
 29365    4711      0      0  3     0x14280  nfsidl        nfsio
 56293  398155      0      0  3     0x14280  nfsidl        nfsio
 76442   87302  56871      0  3         0x2  biowait       syz-executor
  4327  319600      0      0  3     0x14200  bored         sosplice
 61187  260459  56871      0  3        0x82  nanoslp       syz-executor
 29497  398272  56871      0  3        0x82  nanoslp       syz-executor
 35764  475039  56871      0  3        0x82  nanoslp       syz-executor
 77882  165670  56871      0  3        0x82  nanoslp       syz-executor
  8949  274655  56871      0  3        0x82  nanoslp       syz-executor
 56871  292873  73617      0  3        0x82  kqread        syz-executor
 73617  307381  69699      0  3    0x10008a  sigsusp       ksh
 69699  143406  82581      0  3        0x98  kqread        sshd-session
 82581  459838  66978      0  3        0x92  kqread        sshd-session
 73714  354810      1      0  3    0x100083  ttyopn        getty
 66978  251615      1      0  3        0x88  kqread        sshd
 31631  257029  66233     74  3   0x1100092  bpf           pflogd
 66233   76764      1      0  3        0x80  sbwait        pflogd
  8168  414923  54071     73  3   0x1100090  kqread        syslogd
 54071  350409      1      0  3    0x100082  sbwait        syslogd
 62785   69722      1      0  3    0x100080  kqread        resolvd
 77219  460018   2255     77  3    0x100092  kqread        dhcpleased
  7566  228549   2255     77  3    0x100092  kqread        dhcpleased
  2255  343293      1      0  3        0x80  kqread        dhcpleased
 85730  183863      0      0  3     0x14200  bored         smr
 17722  295451      0      0  2     0x14200                zerothread
  7120  413061      0      0  3     0x14200  aiodoned      aiodoned
 66670  120492      0      0  3     0x14200  syncer        update
 37608  378188      0      0  3     0x14200  cleaner       cleaner
 15315  145126      0      0  3     0x14200  reaper        reaper
  1402  319489      0      0  3     0x14200  pgdaemon      pagedaemon
 13456  134299      0      0  3     0x14200  bored         viomb
  5212    9541      0      0  3  0x40014200  acpi0         acpi0
 18786  494496      0      0  3  0x40014200                idle1
 65113  269856      0      0  3     0x14200  bored         softnet1
 12211  390123      0      0  3     0x14200  bored         softnet0
 13562  453318      0      0  3     0x14200  bored         systqmp
 62786  320901      0      0  3     0x14200  bored         systq
 75019  284697      0      0  3     0x14200  tmoslp        softclockmp
   543  192365      0      0  3  0x40014200  tmoslp        softclock
 88153  348040      0      0  3  0x40014200                idle0
     1  195264      0      0  3     0x80082  wait          init
     0       0     -1      0  3  0x10010200  scheduler     swapper
ddb{0}> show all locks
Process 76962 (syz-executor) thread 0xffff80003c40fcc8 (400013)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838caf48)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  vn_closefile+0x41 sys/kern/vfs_vnops.c:608
#2  fdrop+0x121 sys/kern/kern_descrip.c:1280
#3  knote_remove+0x449 sys/kern/kern_event.c:2168
#4  knote_fdclose+0xf9 sys/kern/kern_event.c:2203
#5  fdrelease+0xf9 sys/kern/kern_descrip.c:760
#6  syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6  syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
#7  Xsyscall+0x128
exclusive rwlock fdlock r = 0 (0xffff8000fffeacd0)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  sys_close+0xd0 sys/kern/kern_descrip.c:778
#3  syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#3  syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
#4  Xsyscall+0x128
Process 76442 (syz-executor) thread 0xffff800033be0fb8 (87302)
exclusive rrwlock inode r = 0 (0xfffffd806b8e8ec0)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3  VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
#4  ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline]
#4  ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159
#5  ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232
#6  ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393
#7  ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
#8  VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
#9  domkdirat+0x179 sys/kern/vfs_syscalls.c:3113
#10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806e150118)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3  VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
#4  vn_lock+0xa4 sys/kern/vfs_vnops.c:570
#5  vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1
#6  namei+0x7ca sys/kern/vfs_lookup.c:250
#7  domkdirat+0x8b sys/kern/vfs_syscalls.c:3098
#8  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
#9  Xsyscall+0x128
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10213  11036K   11289K 166960K     12139        0
            pcb    18     16K      18K 166960K       276        0
         rtable   222     11K      12K 166960K       538        0
             pf    42     19K      22K 166960K       124        0
         ifaddr    44      7K       8K 166960K        94        0
        ifgroup    62      2K       2K 166960K       139        0
         sysctl     3      1K       9K 166960K         9        0
       counters    72     37K      37K 166960K       186        0
       ioctlops     0      0K       8K 166960K      1650        0
            iov     0      0K      12K 166960K       117        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1459     92K      92K 166960K      2146        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     3      5K       5K 166960K        15        0
         VM map     2      1K       1K 166960K         2        0
            sem    12      0K       0K 166960K       232        0
        dirhash    12      2K       2K 166960K        33        0
           ACPI  1692    195K     286K 166960K     12470        0
      file desc    17     61K      89K 166960K       960        0
          sigio     0      0K       0K 166960K        18        0
           proc    72    115K     180K 166960K       699        0
        subproc    72      4K       4K 166960K       100        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     1      0K       0K 166960K       126        0
       in_multi    91      6K       7K 166960K       175        0
    ether_multi     1      0K       0K 166960K         6        0
            mrt     1      0K       0K 166960K         7        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys   115    519K     519K 166960K       115        0
           exec     0      0K       1K 166960K       552        0
   fusefs mount     1     32K      32K 166960K         1        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   255    180K     191K 166960K     10482        0
       UVM aobj    29      4K       4K 166960K        33        0
     pinsyscall    42     84K     102K 166960K      2176        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K        49        0
            NDP    14      0K       2K 166960K        65        0
           temp    70   8654K    8725K 166960K     49071        0
         kqueue    15     24K      32K 166960K       197        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       26    0        0     1     0     1     1     0     8    0
rtpcb      120      104    0      101     1     0     1     1     0     8    0
rtentry    176      155    0       70     5     0     5     5     0     8    0
unpcb      144      542    0      520     5     4     1     4     0     8    0
syncache   336       10    0       10     2     1     1     1     0     8    1
tcpqe       32        2    0        2     1     1     0     1     0     8    0
tcpcb      736      381    0      374     9     5     4     7     0     8    2
arp        136       18    0        9     1     0     1     1     0     8    0
inpcb      328     1290    0     1276    12     5     7    12     0     8    5
nd6        152       28    0        9     1     0     1     1     0     8    0
pkpcb       40        4    0        4     2     1     1     1     0     8    1
kcovpl      48       11    0        3     1     0     1     1     0     8    0
ppxss      1192      50    0       49     1     0     1     1     0     8    0
pppxif     1504       2    0        2     2     2     0     1     0     8    0
pffrag     232        1    0        0     1     0     1     1     0   482    0
pffrnode    88        1    0        0     1     0     1     1     0     8    0
pffrent     40        4    0        3     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
pfrktable  1344       1    0        1     1     0     1     1     0     8    1
pfstitem    24       47    0       17     1     0     1     1     0     8    0
pfstkey    128       49    0       19     2     0     2     2     0     8    0
pfstate    384       49    0       19     4     0     4     4     0     8    0
pfrule     1344      27    0       21     2     1     1     2     0     8    0
rttmr      136        2    0        2     1     1     0     1     0     8    0
art_heap8  4096       4    0        0     4     0     4     4     0     8    0
art_heap4  256      736    0      327    36     6    30    30     0     8    1
art_table   40      740    0      327     5     0     5     5     0     8    0
art_node    32      154    0       79     1     0     1     1     0     8    0
sysvmsgpl   40       12    0        4     1     0     1     1     0     8    0
semupl     112        1    0        1     1     1     0     1     0     8    0
semapl     112      228    0      218     1     0     1     1     0     8    0
shmpl      112       30    0        4     1     0     1     1     0     8    0
dirhash    1024      31    0       14     3     0     3     3     0     8    0
dino2pl    256     3236    0     1723    95     0    95    95     0     8    0
ffsino     296     3236    0     1723   117     0   117   117     0     8    0
nchpl      144     4539    0     2837    64     0    64    64     0     8    0
rtmask      32        7    0        7     1     1     0     1     0     8    0
vnodes     216     3699    0        0   206     0   206   206     0     8    0
namei      1024   16661    0    16660     4     2     2     2     0     8    1
percpumem   16      108    0       57     1     0     1     1     0     8    0
kstatmem   264       88    0       58     3     0     3     3     0     8    0
acpiwqpl    32        1    0        1     1     0     1     1     1     8    1
scsiplug    72        2    0        2     2     1     1     1     0     8    1
scxspl     216    34797    0    34796    10     5     5     8     1     8    4
plimitpl   152      191    0      174     1     0     1     1     0     8    0
sigapl     424     1289    0     1220     9     1     8     8     0     8    0
knotepl    120      327    0        0    10     0    10    10     0     8    0
kqueuepl   224      453    0      441     7     4     3     5     0     8    2
pipepl     344      258    0      229     9     6     3     9     0     8    0
fdescpl    528     1249    0     1218     3     0     3     3     0     8    0
filepl     160     8311    0     8077    23     9    14    22     0     8    2
lockfpl    104      319    0      316     1     0     1     1     0     8    0
lockfspl    48      110    0      107     1     0     1     1     0     8    0
sessionpl  144       31    0       22     1     0     1     1     0     8    0
pgrppl      48       56    0       39     1     0     1     1     0     8    0
ucredpl    104     1248    0     1231     1     0     1     1     0     8    0
zombiepl   144     1222    0     1220     1     0     1     1     0     8    0
processpl  1232    1289    0     1220     6     0     6     6     0     8    0
procpl     664     2727    0     2646     9     1     8     8     0     8    0
sosppl     168        4    0        4     2     1     1     1     0     8    1
sockpl     752     1958    0     1918    24    13    11    17     0     8    6
mcl64k     65536      4    0        0     1     0     1     1     0     8    0
mcl16k     16384      3    0        0     1     0     1     1     0     8    0
mcl9k      9216       2    0        0     1     0     1     1     0     8    0
mcl8k      8192       3    0        0     1     0     1     1     0     8    0
mcl4k      4096     119    0        0    15     0    15    15     0     8    0
mcl2k      2048      36    0        0     5     0     5     5     0     8    0
mtagpl      96        3    0        0     1     0     1     1     0     8    0
mbufpl     256      225    0        0    14     0    14    14     0     8    0
bufpl      280    16491    0    10348   439     0   439   439     0     8    0
anonpl      32    15172    0        0   123     0   123   123     0   246    0
amapchunkpl 152   35591    0    35018    39     4    35    35     0   158   11
amappl16   200     5932    0     5895    45    24    21    35     0     8    8
amappl15   192        3    0        3     1     1     0     1     0     8    0
amappl14   184      132    0      119     1     0     1     1     0     8    0
amappl13   176        5    0        5     1     1     0     1     0     8    0
amappl12   168     1956    0     1925     2     0     2     2     0     8    0
amappl11   160       51    0       37     1     0     1     1     0     8    0
amappl10   152       10    0       10     1     1     0     1     0     8    0
amappl9    144      270    0      270     1     1     0     1     0     8    0
amappl8    136       60    0       57     1     0     1     1     0     8    0
amappl7    128      136    0      123     1     0     1     1     0     8    0
amappl6    120      216    0      211     1     0     1     1     0     8    0
amappl5    112      133    0      124     1     0     1     1     0     8    0
amappl4    104      330    0      309     1     0     1     1     0     8    0
amappl3     96     6032    0     5933     4     1     3     4     0     8    0
amappl2     88     1542    0     1465     2     0     2     2     0     8    0
amappl1     80    13233    0    12630    16     1    15    15     0     8    0
amappl      88     9565    0     9384     5     0     5     5     0    92    0
uvmvnodes   80     3699    0        0    76     0    76    76     0     8    0
dma32768   32768      1    0        1     1     1     0     1     0     8    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      254    0      254     2     1     1     1     0     8    1
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       19    0       18     1     0     1     1     0     8    0
aobjpl      72       32    0        4     1     0     1     1     0     8    0
uaddrrnd    24     1249    0     1218     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     1249    0     1218     1     0     1     1     0     8    0
vmmpekpl   168    11944    0    11887     3     0     3     3     0     8    0
vmmpepl    168    87983    0    85961   120     9   111   118     0   357    8
vmsppl     488     1248    0     1218     5     0     5     5     0     8    0
rwobjpl     80    30525    0    25837   102     0   102   102     0     8    0
pdppl      4096    2505    0     2436   110    39    71    83     0     8    2
pvpl        32    23086    0        0   187     0   187   187     0   265    0
pmappl     256     1248    0     1218     3     0     3     3     0     8    0
extentpl    40       45    0       27     1     0     1     1     0     8    0
phpool     112      307    0       56     8     0     8     8     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
witness_checkorder(fffffd806e155110,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806e1550f8,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806e1550f8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd806426e488,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd806426e488,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vn_closefile(fffffd8067b635e8,ffff80003c40fcc8) at vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd8067b635e8,ffff80003c40fcc8) at vn_closefile+0x111 sys/kern/vfs_vnops.c:615
fdrop(fffffd8067b635e8,ffff80003c40fcc8) at fdrop+0x121 sys/kern/kern_descrip.c:1280
knote_remove(ffff80003c40fcc8,fffffd806f022000,fffffd806f022090,8,0) at knote_remove+0x449 sys/kern/kern_event.c:2168
knote_fdclose(ffff80003c40fcc8,8) at knote_fdclose+0xf9 sys/kern/kern_event.c:2203
fdrelease(ffff80003c40fcc8,8) at fdrelease+0xf9 sys/kern/kern_descrip.c:760
syscall(ffff80002f7d2630) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002f7d2630) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x81d72690670, count: -13
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
ddb{1}> trace
x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff838cad40) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff838cad40) at __mp_lock+0x192 sys/kern/kern_lock.c:165
vn_write(fffffd806b9ae850,ffff80003c50a6d8,0) at vn_write+0x4e sys/kern/vfs_vnops.c:393
dofilewritev(ffff800033be87f8,c8,ffff80003c50a6d8,0,ffff80003c50a790) at dofilewritev+0x242 sys/kern/sys_generic.c:380
sys_write(ffff800033be87f8,ffff80003c50a840,ffff80003c50a790) at sys_write+0xa2 sys/kern/sys_generic.c:300
syscall(ffff80003c50a840) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c50a840) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xae58871b860, count: -9

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/09/29 16:28 openbsd 33176f4338fa 770ff59f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: denied attempt to set clock forward to ADDR
* Struck through repros no longer work on HEAD.