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panic: ffs_valloc: dup alloc (5)

Status: upstream: reported on 2026/03/29 02:33
Reported-by: syzbot+05b69bfdcf91c4348144@syzkaller.appspotmail.com
First crash: 57d, last: 35m
▶ ▼ Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd panic: ffs_valloc: dup alloc (2) 2 47 606d 637d 0/3 auto-obsoleted due to no activity on 2024/11/14 07:26
openbsd panic: ffs_valloc: dup alloc (3) 2 2 436d 437d 0/3 auto-obsoleted due to no activity on 2025/06/13 02:07
openbsd panic: ffs_valloc: dup alloc (4) 2 6 219d 231d 0/3 auto-obsoleted due to no activity on 2026/01/15 10:17
openbsd panic: ffs_valloc: dup alloc 2 2 2401d 2404d 0/3 auto-closed as invalid on 2020/01/25 15:52

Sample crash report:
panic: ffs_valloc: dup alloc
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*393944  23747      0         0x2          0    0K syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8349e5db) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_inode_alloc(fffffd806f676cf0,41c0,fffffd80097fd680,ffff80002a325be8) at ffs_inode_alloc+0x94e
ufs_mkdir(ffff80002a325c50) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
VOP_MKDIR(fffffd806f64d6f0,ffff80002a325db0,ffff80002a325de0,ffff80002a325ce0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
domkdirat(ffff80003c3f87f8,ffffff9c,7c93dc362ac0,1c0) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3149
syscall(ffff80002a325f60) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a325f60) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7c93dc362a80, count: 7
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports.  Insufficient info makes it difficult to find and fix bugs.
ddb{0}> 
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: ffs_valloc: dup alloc
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8349e5db) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_inode_alloc(fffffd806f676cf0,41c0,fffffd80097fd680,ffff80002a325be8) at ffs_inode_alloc+0x94e
ufs_mkdir(ffff80002a325c50) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
VOP_MKDIR(fffffd806f64d6f0,ffff80002a325db0,ffff80002a325de0,ffff80002a325ce0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
domkdirat(ffff80003c3f87f8,ffffff9c,7c93dc362ac0,1c0) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3149
syscall(ffff80002a325f60) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a325f60) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7c93dc362a80, count: -8
ddb{0}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff80002a325960
rbx               0xffffffff83914e07    cpu_info_full_primary+0x2e07
rdx                                0
rcx               0xffff80003c3f87f8
rax               0xffffffff83913ff0    cpu_info_full_primary+0x1ff0
r8                 0x101010101010101
r9                0x8080808080808080
r10               0x4274d7423f616fe7
r11               0x3bfac3a458d34885
r12               0xffffffff83914c08    cpu_info_full_primary+0x2c08
r13                                0
r14                                0
r15                              0x1
rip               0xffffffff8340d295    db_enter+0x25
cs                               0x8
rflags                         0x246
rsp               0xffff80002a325950
ss                              0x10
db_enter+0x25:  addq    $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor) tid=393944 pid=23747 tcnt=1 stat=onproc
    flags process=2<EXEC> proc=0
    runpri=50, usrpri=50, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff80003c3f8a90,0xffff80003c3f9798
    process=0xffff80003c470500 user=0xffff80002a321000, vmspace=0xfffffd806f3787a8
    estcpu=31, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 24886  403643  95641      0  2           0                syz-executor
*23747  393944  95641      0  7         0x2                syz-executor
 96133  384539   4409      0  3        0x80  nanoslp       syz-executor
 96133  458584   4409      0  2   0x4000000                syz-executor
 96133  105725   4409      0  2   0x4000000                syz-executor
 96133     125   4409      0  3   0x4000080  fsleep        syz-executor
 63760  149239      0      0  3     0x14280  nfsidl        nfsio
 92010   15576      0      0  3     0x14280  nfsidl        nfsio
  2889  163251      0      0  3     0x14280  nfsidl        nfsio
  9526  351074      0      0  3     0x14280  nfsidl        nfsio
 81753   70209      0      0  3     0x14280  nfsidl        nfsio
 79957  432753      0      0  3     0x14280  nfsidl        nfsio
 71132  487813      0      0  3     0x14280  nfsidl        nfsio
  9766  267697      0      0  3     0x14280  nfsidl        nfsio
 34580  108587      0      0  3     0x14280  nfsidl        nfsio
 57792   61212      0      0  3     0x14280  nfsidl        nfsio
 66645  181773      0      0  3     0x14280  nfsidl        nfsio
 80691  395609      0      0  3     0x14280  nfsidl        nfsio
 39268  152178      0      0  3     0x14280  nfsidl        nfsio
 86085  479621      0      0  3     0x14280  nfsidl        nfsio
 66312  332317      0      0  3     0x14280  nfsidl        nfsio
 26204  293823      0      0  3     0x14280  nfsidl        nfsio
 91760  422847      0      0  3     0x14280  nfsidl        nfsio
 53264  227346      0      0  3     0x14280  nfsidl        nfsio
 48636  393597      0      0  3     0x14280  nfsidl        nfsio
 99402   69297      0      0  3     0x14280  nfsidl        nfsio
 86636  381486      0      0  3     0x14200  acct          acct
 98588   61209  95641      0  3        0x82  wait          syz-executor
  4409   58300  95641      0  3        0x82  nanoslp       syz-executor
 95641  247632  31696      0  2         0x2                syz-executor
 31696  125477  21589      0  3    0x10008a  sigsusp       ksh
 21589  135888  88543      0  3        0x98  kqread        sshd-session
 88543   68597  86497      0  3        0x92  kqread        sshd-session
 41994  169063      1      0  3    0x100083  ttyopn        getty
 86497  237061      1      0  3        0x88  kqread        sshd
 43621   96165  62339     74  3   0x1100092  bpf           pflogd
 62339  307657      1      0  3        0x80  sbwait        pflogd
 77190  275426  97014     73  3   0x1100090  kqread        syslogd
 97014   33552      1      0  3    0x100082  sbwait        syslogd
 78027  412435      1      0  3    0x100080  kqread        resolvd
 47765  128585  91320     77  3    0x100092  kqread        dhcpleased
 23190  404263  91320     77  3    0x100092  kqread        dhcpleased
 91320  341879      1      0  3        0x80  kqread        dhcpleased
 77524   89927      0      0  3     0x14200  bored         smr
 27119   47714      0      0  2     0x14200                zerothread
 35047  477883      0      0  3     0x14200  aiodoned      aiodoned
 66004  242492      0      0  3     0x14200  syncer        update
 28550  488524      0      0  3     0x14200  cleaner       cleaner
  1457  202391      0      0  3     0x14200  reaper        reaper
 36618  314072      0      0  3     0x14200  pgdaemon      pagedaemon
 43920  449467      0      0  3     0x14200  bored         viomb
 73852   67096      0      0  3  0x40014200  acpi0         acpi0
 42204  377634      0      0  7  0x40014200                idle1
 54072  295024      0      0  3     0x14200  bored         softnet1
 50454  188104      0      0  2     0x14200                softnet0
 53431  124148      0      0  3     0x14200  smrbar        systqmp
 60403  455590      0      0  3     0x14200  bored         systq
  2686  189353      0      0  3     0x14200  tmoslp        softclockmp
 58075  424189      0      0  3  0x40014200  tmoslp        softclock
 43472  286431      0      0  3  0x40014200                idle0
     1  384089      0      0  3        0x82  wait          init
     0       0     -1      0  3  0x10010200  scheduler     swapper
ddb{0}> show all locks
Process 23747 (syz-executor) thread 0xffff80003c3f87f8 (393944)
exclusive rrwlock inode r = 0 (0xfffffd806c309ea8)
#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+0xbd 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:3149
#10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806f676d90)
#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+0xbd sys/kern/vfs_vops.c:527
#4  vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5  vfs_lookup+0x12b sys/kern/vfs_lookup.c:431
#6  namei+0x7c5 sys/kern/vfs_lookup.c:250
#7  domkdirat+0x8b sys/kern/vfs_syscalls.c:3134
#8  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9  Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839e5f80)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline]
#1  syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783
#2  Xsyscall+0x128
Process 53431 (systqmp) thread 0xffff8000ffffe000 (124148)
shared rwlock systqmp r = 0 (0xffffffff83991058)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  taskq_thread+0x12a sys/kern/kern_task.c:442
#2  proc_trampoline+0x10
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 11079  12078K   12540K 166960K     12837        0
            pcb    17     13K      14K 166960K       161        0
         rtable   141      6K       8K 166960K       428        0
             pf    29     17K      25K 166960K       185        0
         ifaddr    26      4K       7K 166960K        64        0
        ifgroup    39      1K       2K 166960K        94        0
         sysctl     4      1K       9K 166960K        13        0
       counters    62     36K      37K 166960K       100        0
       ioctlops     0      0K       4K 166960K      1819        0
            iov     0      0K      16K 166960K        11        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1355     85K      86K 166960K      1818        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K       5K 166960K        10        0
         VM map     2      1K       1K 166960K         2        0
            sem    33     21K      21K 166960K        81        0
        dirhash    12      2K       2K 166960K        24        0
           ACPI  1692    195K     286K 166960K     12470        0
      file desc    10     27K     110K 166960K       713        0
          sigio     0      0K       0K 166960K         8        0
           proc    72    115K     147K 166960K       607        0
        subproc    36      2K       4K 166960K        72        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     0      0K       0K 166960K        92        0
       in_multi    51      3K       7K 166960K       126        0
    ether_multi     1      0K       0K 166960K         7        0
            mrt     1      0K       0K 166960K        19        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys   253   1129K    1129K 166960K       253        0
           exec     0      0K       1K 166960K       426        0
   fusefs mount     1     32K      32K 166960K         1        0
            tdb     3      0K       0K 166960K         3        0
        VM swap     8     62K      64K 166960K        10        0
       UVM amap   181    133K     185K 166960K      8161        0
       UVM aobj   131      4K       4K 166960K       131        0
     pinsyscall    35     70K     102K 166960K      1874        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K        36        0
            NDP     8      0K       2K 166960K        41        0
           temp    29   9112K    9181K 166960K     24012        0
         kqueue    13     20K      26K 166960K       119        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       49    0       46     1     0     1     1     0     8    0
rtentry    176      124    0       70     5     0     5     5     0     8    0
unpcb      144      348    0      331     4     2     2     4     0     8    1
syncache   336        6    0        6     2     1     1     1     0     8    1
tcpcb      736      219    0      214     7     1     6     7     0     8    5
arp        136       18    0        8     1     0     1     1     0     8    0
inpcb      328      665    0      657     7     0     7     7     0     8    5
nd6        152       29    0       18     1     0     1     1     0     8    0
pkpcb       40       35    0       35     2     1     1     1     0     8    1
kcovpl      48        8    0        4     1     0     1     1     0     8    0
ppxss      1192      10    0       10     1     0     1     1     0     8    1
pppxif     1576       3    0        3     2     1     1     1     0     8    1
pfstscr     40        4    0        4     1     1     0     1     0     8    0
pffrag     232        9    0        4     1     0     1     1     0   482    0
pffrnode    88        7    0        3     1     0     1     1     0     8    0
pffrent     40       15    0       10     1     0     1     1     0     8    0
pfosfp      40     1428    0     1428     5     3     2     5     0     8    2
pfosfpen   112     1428    0     1428    21     3    18    21     0     8   18
pfrktable  1344       4    0        3     1     0     1     1     0     8    0
pfsrclim   320        1    0        1     1     1     0     1     0     8    0
pfanchor   1288       4    0        0     1     0     1     1     0     8    0
pftag       88        2    0        0     1     0     1     1     0     8    0
pfqueue    320        1    0        1     1     1     0     1     0     8    0
pfstitem    24       71    0        5     1     0     1     1     0     8    0
pfstkey    128       75    0        9     3     0     3     3     0     8    0
pfstate    448       73    0        7     8     0     8     8     0     8    0
pfrule     1360      56    0       50     2     1     1     2     0     8    0
rttmr      136        1    0        1     1     1     0     1     0     8    0
art_heap8  4096       2    0        0     2     0     2     2     0     8    0
art_heap4  256      608    0      271    29     3    26    29     0     8    3
art_table   40      610    0      271     5     0     5     5     0     8    0
art_node    32      124    0       75     1     0     1     1     0     8    0
sysvmsgpl   40        6    0        3     1     0     1     1     0     8    0
semupl     112        2    0        2     2     1     1     1     0     8    1
semapl      72       75    0       44     1     0     1     1     0     8    0
shmpl      112      128    0        0     4     0     4     4     0     8    0
dirhash    1024      25    0        8     3     0     3     3     0     8    0
dino2pl    256     2557    0     1098    93     0    93    93     0     8    0
ffsino     296     2558    0     1099   114     0   114   114     0     8    0
nchpl      144     3553    0     1844    64     0    64    64     0     8    0
vnodes     216     2931    0        0   163     0   163   163     0     8    0
namei      1024   12080    0    12079     2     1     1     2     0     8    0
percpumem   16       65    0       19     1     0     1     1     0     8    0
kstatmem   264       51    0       32     3     1     2     3     0     8    0
scsiplug    72        2    0        2     2     1     1     1     0     8    1
scxspl     216    11788    0    11788    11     3     8     8     1     8    8
plimitpl   152      177    0      161     1     0     1     1     0     8    0
sigapl     424     1047    0      984     9     1     8     8     0     8    0
knotepl    120      310    0        0    10     0    10    10     0     8    0
kqueuepl   224      244    0      235     3     1     2     3     0     8    1
pipepl     344      236    0      206     6     0     6     6     0     8    3
fdescpl    528     1009    0      985     3     0     3     3     0     8    0
filepl     160     5782    0     5612    17     3    14    17     0     8    4
lockfpl    104      239    0      237     1     0     1     1     0     8    0
lockfspl    48      111    0      109     1     0     1     1     0     8    0
sessionpl  144       48    0       39     1     0     1     1     0     8    0
pgrppl      48       61    0       45     1     0     1     1     0     8    0
ucredpl    104      964    0      951     1     0     1     1     0     8    0
zombiepl   144      989    0      984     1     0     1     1     0     8    0
processpl  1232    1047    0      984     7     1     6     6     0     8    0
procpl     664     1938    0     1872     8     0     8     8     0     8    1
sosppl     176        4    0        4     1     1     0     1     0     8    0
sockpl     752     1112    0     1084    14     4    10    14     0     8    6
mcl64k     65536      9    0        0     2     0     2     2     0     8    0
mcl16k     16384      7    0        0     1     0     1     1     0     8    0
mcl12k     12288      2    0        0     1     0     1     1     0     8    0
mcl9k128   9344       1    0        0     1     0     1     1     0     8    0
mcl8k      8192       4    0        0     1     0     1     1     0     8    0
mcl4k      4096     137    0        0    18     0    18    18     0     8    0
mcl2k      2048      22    0        0     3     0     3     3     0     8    0
mtagpl      96        3    0        0     1     0     1     1     0     8    0
mbufpl     256      165    0        0    11     0    11    11     0     8    0
bufpl      280     3790    0      106   264     0   264   264     0     8    0
anonpl      32     5524    0        0    45     0    45    45     0   246    0
amapchunkpl 152   25639    0    25308    30     4    26    29     0   158    7
amappl16   200     2291    0     2273     6     3     3     5     0     8    0
amappl15   192        3    0        3     1     1     0     1     0     8    0
amappl14   184      439    0      438     1     0     1     1     0     8    0
amappl13   176      160    0      148     1     0     1     1     0     8    0
amappl12   168     1274    0     1252     2     0     2     2     0     8    0
amappl11   160       53    0       53     1     1     0     1     0     8    0
amappl10   152       64    0       50     1     0     1     1     0     8    0
amappl9    144      274    0      273     1     0     1     1     0     8    0
amappl8    136      104    0      101     1     0     1     1     0     8    0
amappl7    128      165    0      151     1     0     1     1     0     8    0
amappl6    120      160    0      159     1     0     1     1     0     8    0
amappl5    112      119    0      108     1     0     1     1     0     8    0
amappl4    104      294    0      276     1     0     1     1     0     8    0
amappl3     96     5287    0     5208     4     0     4     4     0     8    0
amappl2     88      560    0      496     2     0     2     2     0     8    0
amappl1     80    13309    0    12740    18     2    16    17     0     8    2
amappl      88     7310    0     7197     5     0     5     5     0    92    0
uvmvnodes   80      122    0        0     3     0     3     3     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
dma2048    2048       1    0        1     1     0     1     1     0     8    1
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       19    0       18     1     0     1     1     0     8    0
aobjpl      72      130    0        0     3     0     3     3     0     8    0
uaddrrnd    24     1009    0      985     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     1009    0      985     1     0     1     1     0     8    0
vmmpekpl   168    10046    0     9989     3     0     3     3     0     8    0
vmmpepl    168    70960    0    69384   100     1    99   100     0   357   15
vmsppl     488     1008    0      985     6     2     4     5     0     8    0
rwobjpl     80    21404    0    20330    30     1    29    30     0     8    3
pdppl      4096    2025    0     1970   105    34    71    85     0     8   16
pvpl        32    12748    0        0   104     1   103   104     0   265    0
pmappl     256     1008    0      985     3     0     3     3     0     8    0
extentpl    40       45    0       27     1     0     1     1     0     8    0
phpool     112      297    0       44     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
panic(ffffffff8349e5db) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_inode_alloc(fffffd806f676cf0,41c0,fffffd80097fd680,ffff80002a325be8) at ffs_inode_alloc+0x94e
ufs_mkdir(ffff80002a325c50) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
VOP_MKDIR(fffffd806f64d6f0,ffff80002a325db0,ffff80002a325de0,ffff80002a325ce0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
domkdirat(ffff80003c3f87f8,ffffff9c,7c93dc362ac0,1c0) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3149
syscall(ffff80002a325f60) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a325f60) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7c93dc362a80, count: -8
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
x86_ipi_db(ffff80002999dff0) 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
acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224
sched_idle(ffff80002999dff0) at sched_idle+0x371 sys/kern/kern_sched.c:192
end trace frame: 0x0, count: 10
ddb{1}> trace

Crashes (97):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/05/25 03:38 openbsd 3ca1fbf96c86 c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/24 15:55 openbsd 6adc68a286a5 c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/24 12:23 openbsd 19a448b47c50 c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/24 08:59 openbsd 19a448b47c50 c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/24 04:22 openbsd 19a448b47c50 c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/23 21:05 openbsd 19a8be4fa5c4 c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/23 17:33 openbsd 19a8be4fa5c4 c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/23 15:01 openbsd 19a8be4fa5c4 c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/23 13:23 openbsd 19a8be4fa5c4 c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/23 07:11 openbsd dbd5cf8c5e8a c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/23 06:03 openbsd dbd5cf8c5e8a c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/23 04:37 openbsd dbd5cf8c5e8a c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/21 16:08 openbsd 19a7e1efad25 747d777d .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/21 13:35 openbsd 19a7e1efad25 747d777d .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/21 10:50 openbsd 19a7e1efad25 747d777d .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/21 06:26 openbsd be9eb1babb0f 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/21 03:28 openbsd be9eb1babb0f 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/21 01:10 openbsd be9eb1babb0f 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/20 19:47 openbsd d39f547900e2 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/20 14:30 openbsd d39f547900e2 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/20 11:24 openbsd d39f547900e2 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/19 21:14 openbsd 3fe334830a75 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/19 16:03 openbsd 8a5afb5cdcf9 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/19 09:43 openbsd 8a5afb5cdcf9 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/19 08:06 openbsd 8a5afb5cdcf9 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/19 04:10 openbsd 08041194ec68 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/18 17:09 openbsd 08041194ec68 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/18 12:04 openbsd 453e3248fd2d 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/18 09:40 openbsd 453e3248fd2d 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/18 06:25 openbsd 453e3248fd2d 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/18 03:56 openbsd 453e3248fd2d 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/18 01:26 openbsd c52d99c0253a 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/18 00:15 openbsd c52d99c0253a 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/17 12:39 openbsd c057dfdb27e5 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/16 22:36 openbsd 501fc77f080e 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/16 01:07 openbsd 25d4b1a85733 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/15 23:10 openbsd 25d4b1a85733 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/15 06:56 openbsd 9f6962b18ef0 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/15 05:25 openbsd 9f6962b18ef0 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/14 17:04 openbsd 86898828a45d 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/14 16:03 openbsd 86898828a45d 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/14 09:19 openbsd 86898828a45d 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/14 03:32 openbsd ed5454cb43ec 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/13 08:43 openbsd 104c674285fe 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/13 03:19 openbsd 5e6d4834f229 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/12 11:38 openbsd 369ac04692fe 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/12 07:24 openbsd 369ac04692fe 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/04/13 01:19 openbsd 4ec71eeccea4 4b3d9a38 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/04/11 17:15 openbsd 9bac450dd51b 4b3d9a38 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/04/05 12:30 openbsd c9c58e023502 4b3d9a38 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/04/05 11:34 openbsd c9c58e023502 4b3d9a38 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/03/29 02:32 openbsd cc88cbeddb7d 4b3d9a38 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
* Struck through repros no longer work on HEAD.