syzbot


uvm_fault: ffs_fragextend (2)

Status: upstream: reported on 2025/09/13 11:51
Reported-by: syzbot+e1bfa9d663d35b9327b7@syzkaller.appspotmail.com
First crash: 1d22h, last: 1d22h
Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: ffs_fragextend -1 2 366d 367d 0/3 auto-obsoleted due to no activity on 2024/12/12 18:09

Sample crash report:
uvm_fault(0xffffffff838fce98, 0xffff8000253b2004, 0, 1) -> d
kernel: page fault trap, code=0
Stopped at      ffs_fragextend+0x1c8:   movl    0x4(%rbx),%r14d
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
  61475  52326      0           0          0    1  syz-executor
*371210  77492      0         0x2        0x1    0K syz-executor
ffs_fragextend(fffffd806f562bb8,4,78ae8,3000,3800) at ffs_fragextend+0x1c8 ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline]
ffs_fragextend(fffffd806f562bb8,4,78ae8,3000,3800) at ffs_fragextend+0x1c8 sys/ufs/ffs/ffs_alloc.c:890
ffs_realloccg(fffffd806f562bb8,2,78ae8,3000,3800,fffffd80097fb270,b28f66ed1551b04,fffffd806da64a70) at ffs_realloccg+0x53a sys/ufs/ffs/ffs_alloc.c:225
ffs2_balloc(fffffd806f562bb8,afb1,58,fffffd80097fb270,1,ffff80002a3ce4a8) at ffs2_balloc+0x54d sys/ufs/ffs/ffs_balloc.c:516
ffs_write(ffff80002a3ce530) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345
VOP_WRITE(fffffd806abc48b8,ffff80002a3ce5e0,3,fffffd80097fb270) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
ktrwriteraw(ffff80002a282550,fffffd806abc48b8,fffffd80097fb270,ffff80002a3ce6b0,ffff80002a3ce690) at ktrwriteraw+0x1be sys/kern/kern_ktrace.c:691
ktrsyscall(ffff80002a282550,5b,10,ffff80002a3ce840) at ktrsyscall+0x340 ktrwrite sys/kern/kern_ktrace.c:-1 [inline]
ktrsyscall(ffff80002a282550,5b,10,ffff80002a3ce840) at ktrsyscall+0x340 sys/kern/kern_ktrace.c:183
syscall(ffff80002a3ce840) at syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff80002a3ce840) at syscall+0x304 sys/arch/amd64/amd64/trap.c:746
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7b39b3a44e50, count: 6
https://www.openbsd.org/ddb.html describes the minimum info required in bug
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ddb{0}> 
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: uvm_fault(0xffffffff838fce98, 0xffff8000253b2004, 0, 1) -> d
ddb{0}> trace
ffs_fragextend(fffffd806f562bb8,4,78ae8,3000,3800) at ffs_fragextend+0x1c8 ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline]
ffs_fragextend(fffffd806f562bb8,4,78ae8,3000,3800) at ffs_fragextend+0x1c8 sys/ufs/ffs/ffs_alloc.c:890
ffs_realloccg(fffffd806f562bb8,2,78ae8,3000,3800,fffffd80097fb270,b28f66ed1551b04,fffffd806da64a70) at ffs_realloccg+0x53a sys/ufs/ffs/ffs_alloc.c:225
ffs2_balloc(fffffd806f562bb8,afb1,58,fffffd80097fb270,1,ffff80002a3ce4a8) at ffs2_balloc+0x54d sys/ufs/ffs/ffs_balloc.c:516
ffs_write(ffff80002a3ce530) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345
VOP_WRITE(fffffd806abc48b8,ffff80002a3ce5e0,3,fffffd80097fb270) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
ktrwriteraw(ffff80002a282550,fffffd806abc48b8,fffffd80097fb270,ffff80002a3ce6b0,ffff80002a3ce690) at ktrwriteraw+0x1be sys/kern/kern_ktrace.c:691
ktrsyscall(ffff80002a282550,5b,10,ffff80002a3ce840) at ktrsyscall+0x340 ktrwrite sys/kern/kern_ktrace.c:-1 [inline]
ktrsyscall(ffff80002a282550,5b,10,ffff80002a3ce840) at ktrsyscall+0x340 sys/kern/kern_ktrace.c:183
syscall(ffff80002a3ce840) at syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff80002a3ce840) at syscall+0x304 sys/arch/amd64/amd64/trap.c:746
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7b39b3a44e50, count: -9
ddb{0}> show registers
rdi                                0
rsi                                0
rbp               0xffff80002a3ce1d0
rbx               0xffff8000253b2000
rdx                                0
rcx               0xffff80002a282550
rax               0xfffffd806856ea10
r8                0xffffffffffffffff
r9                           0x78ae8    acpi_pdirpa+0x64959
r10               0xffff80002a3ce3a8
r11               0x9ac01261568e8873
r12                              0x7
r13               0xffff800000b2d800
r14                                0
r15               0xffff800000b2d800
rip               0xffffffff813311b8    ffs_fragextend+0x1c8
cs                               0x8
rflags                       0x10246    __ALIGN_SIZE+0xf246
rsp               0xffff80002a3ce100
ss                              0x10
ffs_fragextend+0x1c8:   movl    0x4(%rbx),%r14d
ddb{0}> show proc
PROC (syz-executor) tid=371210 pid=77492 tcnt=1 stat=onproc
    flags process=2<EXEC> proc=1<INKTR>
    runpri=32, usrpri=84, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff80002a2827e8,0xffff8000333e9278
    process=0xffff8000fffeeb68 user=0xffff80002a3c9000, vmspace=0xfffffd800b027b70
    estcpu=34, cpticks=83, pctcpu=0.24, user=2, sys=81, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 52326   61475  55666      0  7           0                syz-executor
 52326  258652  55666      0  2   0x4000000                syz-executor
 70068  502126  77742      0  2           0                syz-executor
 70068   19388  77742      0  2   0x4000000                syz-executor
 58792  485622   8869      0  2           0                syz-executor
 58792  143882   8869      0  3   0x4000080  fifow         syz-executor
 58792  411491   8869      0  3   0x4000080  fsleep        syz-executor
  8887  147798  62575      0  2       0xc80                syz-executor
  8887  269827  62575      0  3   0x4000080  ttyout        syz-executor
  8887  431777  62575      0  3   0x4000080  netacc        syz-executor
  8887  240148  62575      0  3   0x4000080  fsleep        syz-executor
 93966   61987  77492  60929  2       0xc90                syz-executor
 93966  209677  77492  60929  3   0x4000090  ttyout        syz-executor
 93966  380168  77492  60929  3   0x4000090  fsleep        syz-executor
 10161  459336  88170      0  2       0xc80                syz-executor
 10161  313331  88170      0  3   0x4000080  kqread        syz-executor
 10161   82857  88170      0  3   0x4000080  fsleep        syz-executor
  8869  100263  42285      0  2       0xc82                syz-executor
 38508  450084      0      0  3     0x14200  acct          acct
 20793  202769  42285      0  2       0xc82                syz-executor
 62575  338239  42285      0  2       0xc82                syz-executor
 88373  181771      1      0  3    0x100083  ttyopn        getty
 63065  439307      0      0  3     0x14200  bored         sosplice
*77492  371210  42285      0  7         0x3                syz-executor
 88170  333026  42285      0  2       0xc82                syz-executor
 93016    5025  42285      0  2       0xc82                syz-executor
 55666  151363  42285      0  2       0xc82                syz-executor
 77742  109812  42285      0  3        0x82  nanoslp       syz-executor
 42285  408966  50748      0  3        0x82  kqread        syz-executor
 50748  359214  75392      0  3    0x10008a  sigsusp       ksh
 75392  122064  83632      0  3        0x98  kqread        sshd-session
 83632  418963  80184      0  3        0x92  kqread        sshd-session
 80184  411363      1      0  3        0x88  kqread        sshd
 10035  329319  21501     74  3   0x1100092  bpf           pflogd
 21501  207245      1      0  3        0x80  sbwait        pflogd
 24478  299146  20063     73  3   0x1100090  kqread        syslogd
 20063  399357      1      0  3    0x100082  sbwait        syslogd
 81916  520245      1      0  3    0x100080  kqread        resolvd
 24936  493026  79187     77  3    0x100092  kqread        dhcpleased
 38802  108552  79187     77  3    0x100092  kqread        dhcpleased
 79187  444503      1      0  3        0x80  kqread        dhcpleased
  3797  510990      0      0  3     0x14200  bored         smr
 81187  219836      0      0  2     0x14200                zerothread
 67695  226094      0      0  3     0x14200  aiodoned      aiodoned
 61894  361464      0      0  3     0x14200  syncer        update
 98049  197294      0      0  3     0x14200  cleaner       cleaner
 95379   25775      0      0  3     0x14200  reaper        reaper
   109  201978      0      0  3     0x14200  pgdaemon      pagedaemon
 48401  376671      0      0  3     0x14200  bored         viomb
 48836  214254      0      0  3  0x40014200  acpi0         acpi0
 92344   94160      0      0  3  0x40014200                idle1
 22658  178122      0      0  3     0x14200  bored         softnet1
 51107  299313      0      0  3     0x14200  bored         softnet0
 82926  404215      0      0  3     0x14200  bored         systqmp
 59178  237783      0      0  3     0x14200  bored         systq
 70532  336343      0      0  3     0x14200  tmoslp        softclockmp
 94248   52750      0      0  3  0x40014200  tmoslp        softclock
 99163  125112      0      0  3  0x40014200                idle0
     1  152684      0      0  3        0x82  wait          init
     0       0     -1      0  3  0x10010200  scheduler     swapper
ddb{0}> show all locks
Process 77492 (syz-executor) thread 0xffff80002a282550 (371210)
exclusive rrwlock inode r = 0 (0xfffffd806f562c58)
#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  vget+0x2a2 sys/kern/vfs_subr.c:693
#6  ktrwriteraw+0x175 sys/kern/kern_ktrace.c:688
#7  ktrsyscall+0x340 ktrwrite sys/kern/kern_ktrace.c:-1 [inline]
#7  ktrsyscall+0x340 sys/kern/kern_ktrace.c:183
#8  syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline]
#8  syscall+0x304 sys/arch/amd64/amd64/trap.c:746
#9  Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838f9630)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  ktrsyscall+0x2c7 ktrwrite sys/kern/kern_ktrace.c:-1 [inline]
#1  ktrsyscall+0x2c7 sys/kern/kern_ktrace.c:183
#2  syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline]
#2  syscall+0x304 sys/arch/amd64/amd64/trap.c:746
#3  Xsyscall+0x128
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10209  11035K   11702K 166960K     12184        0
            pcb    18     13K      20K 166960K       230        0
         rtable   204      9K       9K 166960K       512        0
             pf    38     18K      81K 166960K       143        0
         ifaddr    39      6K       8K 166960K        98        0
        ifgroup    55      2K       2K 166960K       157        0
         sysctl     4      1K       9K 166960K        13        0
       counters    68     36K      37K 166960K       170        0
       ioctlops     0      0K       4K 166960K      1777        0
            iov     0      0K      24K 166960K       124        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1364     86K      86K 166960K      2040        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K       5K 166960K        16        0
         VM map     2      1K       1K 166960K         2        0
            sem    12      1K       1K 166960K        46        0
        dirhash    12      2K       2K 166960K        45        0
           ACPI  1692    195K     286K 166960K     12470        0
      file desc    18     65K     236K 166960K      1224        0
          sigio     0      0K       0K 166960K        14        0
           proc    73    115K     164K 166960K       721        0
        subproc    72      4K       4K 166960K        99        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     0      0K       0K 166960K       170        0
       in_multi    85      6K       7K 166960K       187        0
    ether_multi     1      0K       0K 166960K        14        0
            mrt     1      0K       0K 166960K        13        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys    97    440K     440K 166960K        97        0
           exec     0      0K       1K 166960K       620        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   262    160K     176K 166960K     12835        0
       UVM aobj    10      2K       2K 166960K        12        0
     pinsyscall    43     86K     103K 166960K      2421        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       1K 166960K        73        0
            NDP    12      0K       2K 166960K        69        0
           temp    72   8649K    8755K 166960K     56959        0
         kqueue    15     24K      33K 166960K       253        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      110    0      106     1     0     1     1     0     8    0
rtentry    176      156    0       73     5     0     5     5     0     8    0
unpcb      144      939    0      915     5     2     3     4     0     8    2
syncache   336        8    0        8     3     3     0     1     0     8    0
tcpqe       32        3    0        3     2     2     0     1     0     8    0
tcpcb      736      379    0      371     8     1     7     7     0     8    6
arp        136       18    0        6     1     0     1     1     0     8    0
inpcb      328     1223    0     1207    12     5     7     7     0     8    5
nd6        144       31    0       11     1     0     1     1     0     8    0
pkpcb       40       13    0       13     4     3     1     1     0     8    1
kcovpl      48       11    0        3     1     0     1     1     0     8    0
mppekey    1024       1    0        1     1     1     0     1     0     8    0
ppxss      1192      39    0       39     2     1     1     1     0     8    1
pppxif     1504       3    0        3     2     1     1     1     0     8    1
pfstscr     40        1    0        1     1     1     0     1     0     8    0
pffrag     232        8    0        1     1     0     1     1     0   482    0
pffrnode    88        8    0        1     1     0     1     1     0     8    0
pffrent     40       18    0       10     1     0     1     1     0     8    0
pfosfp      40     1430    0     1005     5     0     5     5     0     8    0
pfosfpen   112     1430    0      714    21     0    21    21     0     8    0
pfrktable  1344       1    0        1     1     1     0     1     0     8    0
pfanchor   1288       2    0        0     1     0     1     1     0     8    0
pftag       88        1    0        0     1     0     1     1     0     8    0
pfstitem    24       70    0       27     1     0     1     1     0     8    0
pfstkey    128       73    0       29     2     0     2     2     0     8    0
pfstate    384       69    0       28     5     0     5     5     0     8    0
pfrule     1344      25    0       20     2     1     1     2     0     8    0
rttmr      136        5    0        5     2     2     0     1     0     8    0
art_heap8  4096       3    0        0     3     0     3     3     0     8    0
art_heap4  256      735    0      352    32     7    25    28     0     8    0
art_table   40      738    0      352     5     0     5     5     0     8    0
art_node    32      152    0       78     1     0     1     1     0     8    0
sysvmsgpl   40        5    0        3     1     0     1     1     0     8    0
semupl     112        1    0        1     1     1     0     1     0     8    0
semapl     112       41    0       31     1     0     1     1     0     8    0
shmpl      112        9    0        2     1     0     1     1     0     8    0
dirhash    1024      40    0       23     3     0     3     3     0     8    0
dino2pl    256     3534    0     2022    95     0    95    95     0     8    0
ffsino     296     3534    0     2022   117     0   117   117     0     8    0
nchpl      144     5172    0     3466    64     0    64    64     0     8    0
rtmask      32        5    0        5     3     2     1     1     0     8    1
uvmvnodes   80     3922    0        0    81     0    81    81     0     8    0
vnodes     216     3922    0        0   218     0   218   218     0     8    0
namei      1024   18286    0    18286     1     0     1     1     0     8    1
percpumem   16      100    0       51     1     0     1     1     0     8    0
kstatmem   264       98    0       70     4     1     3     3     0     8    1
scsiplug    72        7    0        7     3     2     1     1     0     8    1
scxspl     216    22210    0    22210    10     6     4     8     1     8    4
plimitpl   152      352    0      335     1     0     1     1     0     8    0
sigapl     424     1542    0     1492     9     2     7     8     0     8    0
knotepl    120      535    0        0    16     0    16    16     0     8    0
kqueuepl   224      614    0      602    10     5     5     7     0     8    4
pipepl     344      207    0      180     3     0     3     3     0     8    0
fdescpl    528     1499    0     1467     3     0     3     3     0     8    0
filepl     160     9507    0     9269    20     5    15    16     0     8    4
lockfpl    104      634    0      632     4     3     1     4     0     8    0
lockfspl    48      162    0      160     1     0     1     1     0     8    0
sessionpl  144       30    0       21     1     0     1     1     0     8    0
pgrppl      48       49    0       32     1     0     1     1     0     8    0
ucredpl    104     1164    0     1150     1     0     1     1     0     8    0
zombiepl   144     1494    0     1492     1     0     1     1     0     8    0
processpl  1232    1542    0     1492     6     0     6     6     0     8    0
procpl     664     3351    0     3290     9     3     6     8     0     8    0
sosppl     168        8    0        8     2     1     1     1     0     8    1
sockpl     752     2347    0     2303    18     6    12    12     0     8    7
mcl64k     65536      5    0        0     1     0     1     1     0     8    0
mcl16k     16384      1    0        0     1     0     1     1     0     8    0
mcl9k      9216       1    0        0     1     0     1     1     0     8    0
mcl8k      8192       3    0        0     1     0     1     1     0     8    0
mcl4k      4096     120    0        0    15     0    15    15     0     8    0
mcl2k2     2112       1    0        0     1     0     1     1     0     8    0
mcl2k      2048      67    0        0     8     0     8     8     0     8    0
mtagpl      96        5    0        0     1     0     1     1     0     8    0
mbufpl     256     1155    0        0    72     0    72    72     0     8    0
bufpl      280     8974    0     2831   439     0   439   439     0     8    0
anonpl      32     8813    0        0    72     1    71    71     0   246    0
amapchunkpl 152   42585    0    41980    47    19    28    40     0   158    0
amappl16   200     4502    0     4467    21     9    12    16     0     8    5
amappl15   192        6    0        6     1     1     0     1     0     8    0
amappl14   184      164    0      152     1     0     1     1     0     8    0
amappl13   176        5    0        5     1     1     0     1     0     8    0
amappl12   168     2206    0     2174     4     1     3     3     0     8    0
amappl11   160       51    0       37     1     0     1     1     0     8    0
amappl10   152        6    0        5     1     0     1     1     0     8    0
amappl9    144      249    0      249     2     1     1     1     0     8    1
amappl8    136       20    0       17     1     0     1     1     0     8    0
amappl7    128      123    0      110     1     0     1     1     0     8    0
amappl6    120      230    0      227     1     0     1     1     0     8    0
amappl5    112      137    0      127     1     0     1     1     0     8    0
amappl4    104      325    0      305     1     0     1     1     0     8    0
amappl3     96     7423    0     7316     3     0     3     3     0     8    0
amappl2     88     1779    0     1698     2     0     2     2     0     8    0
amappl1     80    13734    0    13129    15     0    15    15     0     8    0
amappl      88    11892    0    11701     5     0     5     5     0    92    0
dma65536   65536      1    0        1     1     1     0     1     0     8    0
dma4096    4096       1    0        1     1     1     0     1     0     8    0
dma2048    2048       1    0        1     1     1     0     1     0     8    0
dma1024    1024       1    0        0     1     0     1     1     0     8    0
dma256     256        7    0        7     2     1     1     1     0     8    1
dma128     128      255    0      255     2     1     1     1     0     8    1
dma64       64       39    0       39     2     2     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       11    0        2     1     0     1     1     0     8    0
uaddrrnd    24     1500    0     1468     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     1500    0     1468     1     0     1     1     0     8    0
vmmpekpl   168    12760    0    12708     3     0     3     3     0     8    0
vmmpepl    168    98736    0    96670   106     7    99   104     0   357    4
vmsppl     488     1499    0     1468     5     0     5     5     0     8    0
rwobjpl     80    31299    0    26398   103     0   103   103     0     8    2
pdppl      4096    3008    0     2936   116    42    74    86     0     8    2
pvpl        32    17309    0        0   141     1   140   140     0   265    0
pmappl     256     1499    0     1468     3     0     3     3     0     8    0
extentpl    40       45    0       27     1     0     1     1     0     8    0
phpool     112      369    0       58     9     0     9     9     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
ffs_fragextend(fffffd806f562bb8,4,78ae8,3000,3800) at ffs_fragextend+0x1c8 ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline]
ffs_fragextend(fffffd806f562bb8,4,78ae8,3000,3800) at ffs_fragextend+0x1c8 sys/ufs/ffs/ffs_alloc.c:890
ffs_realloccg(fffffd806f562bb8,2,78ae8,3000,3800,fffffd80097fb270,b28f66ed1551b04,fffffd806da64a70) at ffs_realloccg+0x53a sys/ufs/ffs/ffs_alloc.c:225
ffs2_balloc(fffffd806f562bb8,afb1,58,fffffd80097fb270,1,ffff80002a3ce4a8) at ffs2_balloc+0x54d sys/ufs/ffs/ffs_balloc.c:516
ffs_write(ffff80002a3ce530) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345
VOP_WRITE(fffffd806abc48b8,ffff80002a3ce5e0,3,fffffd80097fb270) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
ktrwriteraw(ffff80002a282550,fffffd806abc48b8,fffffd80097fb270,ffff80002a3ce6b0,ffff80002a3ce690) at ktrwriteraw+0x1be sys/kern/kern_ktrace.c:691
ktrsyscall(ffff80002a282550,5b,10,ffff80002a3ce840) at ktrsyscall+0x340 ktrwrite sys/kern/kern_ktrace.c:-1 [inline]
ktrsyscall(ffff80002a282550,5b,10,ffff80002a3ce840) at ktrsyscall+0x340 sys/kern/kern_ktrace.c:183
syscall(ffff80002a3ce840) at syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff80002a3ce840) at syscall+0x304 sys/arch/amd64/amd64/trap.c:746
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7b39b3a44e50, count: -9
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
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
end of kernel
end trace frame: 0x72bf484fdf90, count: 12
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
end of kernel
end trace frame: 0x72bf484fdf90, count: -3

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/09/13 11:50 openbsd 597bb1fc1f2a e2beed91 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ffs_fragextend
* Struck through repros no longer work on HEAD.