panic: ffs_valloc: dup alloc (5)

panic: ffs_valloc: dup alloc (5)

Status: upstream: reported on 2026/03/29 02:33
Reported-by: syzbot+05b69bfdcf91c4348144@syzkaller.appspotmail.com
First crash: 46d, last: 2h11m

▶ ▼ Similar bugs (4)

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
openbsd	panic: ffs_valloc: dup alloc (2)	2	47	596d	626d	0/3	auto-obsoleted due to no activity on 2024/11/14 07:26
openbsd	panic: ffs_valloc: dup alloc (3)	2	2	425d	426d	0/3	auto-obsoleted due to no activity on 2025/06/13 02:07
openbsd	panic: ffs_valloc: dup alloc (4)	2	6	209d	221d	0/3	auto-obsoleted due to no activity on 2026/01/15 10:17
openbsd	panic: ffs_valloc: dup alloc	2	2	2391d	2394d	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
 381609  91099      0           0          0    0  syz-executor
*103270  56365      0         0x2          0    1K syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8343180e) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_inode_alloc(fffffd806d4e2390,41ed,fffffd80097fd750,ffff80002a330018) at ffs_inode_alloc+0x94e
ufs_mkdir(ffff80002a330080) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
VOP_MKDIR(fffffd806d1643a0,ffff80002a3301e0,ffff80002a330210,ffff80002a330110) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
domkdirat(ffff8000fffefca0,ffffff9c,7e393542c6d0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3143
syscall(ffff80002a330390) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a330390) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7e393542c770, 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{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: ffs_valloc: dup alloc
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8343180e) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_inode_alloc(fffffd806d4e2390,41ed,fffffd80097fd750,ffff80002a330018) at ffs_inode_alloc+0x94e
ufs_mkdir(ffff80002a330080) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
VOP_MKDIR(fffffd806d1643a0,ffff80002a3301e0,ffff80002a330210,ffff80002a330110) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
domkdirat(ffff8000fffefca0,ffffff9c,7e393542c6d0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3143
syscall(ffff80002a330390) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a330390) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7e393542c770, count: -8
ddb{1}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff80002a32fd90
rbx               0xffff8000299aee07
rdx                                0
rcx               0xffff8000fffefca0
rax               0xffff8000299adff0
r8                 0x101010101010101
r9                0x8080808080808080
r10               0xac850d3fc69b7caa
r11               0x2bfdcb12c6c7a622
r12               0xffff8000299aec08
r13                                0
r14                                0
r15                              0x1
rip               0xffffffff8299c4b5    db_enter+0x25
cs                               0x8
rflags                         0x246
rsp               0xffff80002a32fd80
ss                              0x10
db_enter+0x25:  addq    $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor) tid=103270 pid=56365 tcnt=1 stat=onproc
    flags process=2<EXEC> proc=0
    runpri=17, usrpri=50, slppri=17, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff8000ffffd4c8,0xffff8000fffeefb8
    process=0xffff8000ffff44d8 user=0xffff80002a32b000, vmspace=0xfffffd800b0633d0
    estcpu=36, cpticks=17, pctcpu=0.13, user=0, sys=13, intr=4
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 91099  381609   4428      0  7           0                syz-executor
 91099  382630   4428      0  3   0x4000080  ttyopn        syz-executor
 91099   99117   4428      0  3   0x4000080  fsleep        syz-executor
 25832  420403  50609      0  3        0x90  nanoslp       syz-executor
 25832  157646  50609      0  3   0x4000090  fsleep        syz-executor
 25832  219260  50609      0  3   0x4000090  lockf         syz-executor
 25832  136055  50609      0  3   0x4000090  fsleep        syz-executor
 91502  264166   4547      0  3        0x80  nanoslp       syz-executor
 91502   57780   4547      0  3   0x4000080  kqread        syz-executor
 66772  130408  47564      0  3        0x80  nanoslp       syz-executor
 66772   14894  47564      0  3   0x4000080  lockf         syz-executor
  1136  398850  88142      0  3        0x80  nanoslp       syz-executor
  1136   20133  88142      0  3   0x4000080  lockf         syz-executor
  1136   30458  88142      0  3   0x4000080  fsleep        syz-executor
 38557   62124      0      0  3     0x14200  acct          acct
 78342  154755  96163      0  3        0x82  nanoslp       syz-executor
  4547  387176  96163      0  3        0x82  nanoslp       syz-executor
 47564  239061  96163      0  3        0x82  nanoslp       syz-executor
*56365  103270  96163      0  7         0x2                syz-executor
 50609  365713  96163      0  3        0x82  nanoslp       syz-executor
  4428  401718  96163      0  3        0x82  nanoslp       syz-executor
 88142  511352  96163      0  3        0x82  nanoslp       syz-executor
 96163  116346  58693      0  3        0x82  wait          syz-executor
 58693  130082  49606      0  3    0x10008a  sigsusp       ksh
 49606   75337  86038      0  3        0x98  kqread        sshd-session
 86038   29011  71758      0  3        0x92  kqread        sshd-session
 28627   29761      1      0  3    0x100083  ttyin         getty
 71758  333162      1      0  3        0x88  kqread        sshd
 58018  228864  76821     74  3   0x1100092  bpf           pflogd
 76821  255715      1      0  3        0x80  sbwait        pflogd
 44592  338098   7763     73  3   0x1100090  kqread        syslogd
  7763  318679      1      0  3    0x100082  sbwait        syslogd
 86706  489340      1      0  3    0x100080  kqread        resolvd
 30797  251510  96136     77  3    0x100092  kqread        dhcpleased
 84950   61076  96136     77  3    0x100092  kqread        dhcpleased
 96136  350232      1      0  3        0x80  kqread        dhcpleased
 45816   35047      0      0  3     0x14200  bored         smr
  5854   98464      0      0  3     0x14200  pgzero        zerothread
 81157  496917      0      0  3     0x14200  aiodoned      aiodoned
 70494  270844      0      0  3     0x14200  syncer        update
 14120  274263      0      0  3     0x14200  cleaner       cleaner
 23488  168229      0      0  3     0x14200  reaper        reaper
 28259  315462      0      0  3     0x14200  pgdaemon      pagedaemon
 91398  119800      0      0  3     0x14200  bored         viomb
 20987  362030      0      0  3  0x40014200  acpi0         acpi0
 65913  218343      0      0  3  0x40014200                idle1
 29576  323620      0      0  3     0x14200  bored         softnet1
  6743  284695      0      0  3     0x14200  bored         softnet0
 61530  459462      0      0  3     0x14200  smrbar        systqmp
 54108  445212      0      0  3     0x14200  bored         systq
 19923  248689      0      0  3     0x14200  tmoslp        softclockmp
 79728   78591      0      0  3  0x40014200  tmoslp        softclock
 91372  401029      0      0  3  0x40014200                idle0
     1  395206      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{1}> show all locks
Process 56365 (syz-executor) thread 0xffff8000fffefca0 (103270)
exclusive rrwlock inode r = 0 (0xfffffd806c28f8e0)
#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:3143
#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 (0xfffffd806d4e2430)
#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+0x11c sys/kern/vfs_lookup.c:-1
#6  namei+0x7ca sys/kern/vfs_lookup.c:250
#7  domkdirat+0x8b sys/kern/vfs_syscalls.c:3128
#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 (0xffffffff83a28f40)
#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 61530 (systqmp) thread 0xffff8000ffffe298 (459462)
shared rwlock systqmp r = 0 (0xffffffff838f4758)
#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{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 11072  12169K   12288K 166960K     12366        0
            pcb    17     12K      12K 166960K        37        0
         rtable   223      6K       7K 166960K       361        0
             pf    38     18K      24K 166960K        63        0
         ifaddr    43      7K       7K 166960K        49        0
        ifgroup    60      2K       2K 166960K        64        0
         sysctl     1      1K       9K 166960K         6        0
       counters    72     37K      37K 166960K        78        0
       ioctlops     0      0K       4K 166960K      1572        0
            iov     0      0K       4K 166960K         7        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1293     81K      81K 166960K      1444        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K       5K 166960K         4        0
         VM map     2      1K       1K 166960K         2        0
            sem     8      0K       0K 166960K        10        0
        dirhash    12      2K       2K 166960K        18        0
           ACPI  1692    195K     286K 166960K     12470        0
      file desc    16     57K      93K 166960K       236        0
          sigio     0      0K       0K 166960K         3        0
           proc    72    115K     196K 166960K       566        0
        subproc    72      4K       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        25        0
       in_multi   101      7K       7K 166960K       110        0
    ether_multi     1      0K       0K 166960K         4        0
            mrt     0      0K       0K 166960K         5        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys    67    307K     307K 166960K        67        0
           exec     0      0K       1K 166960K       397        0
   fusefs mount     1     32K      32K 166960K         1        0
     pfkey data     0      0K       0K 166960K         1        0
            tdb     3      0K       0K 166960K         3        0
        VM swap     8     62K      64K 166960K        10        0
       UVM amap   229    159K     194K 166960K      4014        0
       UVM aobj     7      2K       2K 166960K         7        0
     pinsyscall    41     82K     103K 166960K      1423        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K         4        0
            NDP    13      0K       2K 166960K        31        0
           temp    36   9074K    9139K 166960K     11825        0
         kqueue    14     22K      26K 166960K        46        0
      SYN cache     2     16K      16K 166960K         2        0
ddb{1}> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache    128       26    0        0     1     0     1     1     0     8    0
rtpcb      120       39    0       36     1     0     1     1     0     8    0
rtentry    176      111    0        9     5     0     5     5     0     8    0
unpcb      144      127    0      110     2     0     2     2     0     8    1
syncache   336        5    0        5     1     0     1     1     0     8    1
tcpcb      736       43    0       37     2     0     2     2     0     8    1
arp        136       18    0        4     1     0     1     1     0     8    0
inpcb      328      152    0      140     2     0     2     2     0     8    0
nd6        152       24    0        0     1     0     1     1     0     8    0
pkpcb       40        3    0        3     1     0     1     1     0     8    1
kcovpl      48        8    0        0     1     0     1     1     0     8    0
ppxss      1192       4    0        3     1     0     1     1     0     8    0
pfstscr     40        2    0        2     1     0     1     1     0     8    1
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        2    0        0     1     0     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
pfanchor   1288       2    0        0     1     0     1     1     0     8    0
pfstitem    24       22    0        0     1     0     1     1     0     8    0
pfstkey    128       24    0        2     1     0     1     1     0     8    0
pfstate    448       23    0        1     3     0     3     3     0     8    0
pfrule     1360      23    0       17     2     1     1     2     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256      452    0        0    29     0    29    29     0     8    0
art_table   40      453    0        0     5     0     5     5     0     8    0
art_node    32      111    0       15     1     0     1     1     0     8    0
sysvmsgpl   40        2    0        1     1     0     1     1     0     8    0
semupl     112        3    0        2     1     0     1     1     0     8    0
semapl     112        7    0        1     1     0     1     1     0     8    0
shmpl      112        4    0        0     1     0     1     1     0     8    0
dirhash    1024      21    0        4     3     0     3     3     0     8    0
dino2pl    256     1791    0      323    93     0    93    93     0     8    0
ffsino     296     1791    0      323   114     0   114   114     0     8    0
nchpl      144     2114    0      409    64     0    64    64     0     8    0
vnodes     216     1916    0        0   107     0   107   107     0     8    0
namei      1024    6795    0     6794     1     0     1     1     0     8    0
percpumem   16       54    0        3     1     0     1     1     0     8    0
kstatmem   264       33    0        4     2     0     2     2     0     8    0
scsiplug    72        1    0        1     1     0     1     1     0     8    1
scxspl     216     7092    0     7092     4     3     1     3     1     8    1
plimitpl   152       42    0       25     1     0     1     1     0     8    0
sigapl     424      562    0      515     7     0     7     7     0     8    1
knotepl    120      339    0        0    11     0    11    11     0     8    0
kqueuepl   224       52    0       42     1     0     1     1     0     8    0
pipepl     344      137    0      110     3     0     3     3     0     8    0
fdescpl    528      545    0      515     3     0     3     3     0     8    0
filepl     160     2334    0     2105    13     0    13    13     0     8    2
lockfpl    104       65    0       56     1     0     1     1     0     8    0
lockfspl    48       28    0       24     1     0     1     1     0     8    0
sessionpl  144       32    0       23     1     0     1     1     0     8    0
pgrppl      48       43    0       26     1     0     1     1     0     8    0
ucredpl    104      219    0      205     1     0     1     1     0     8    0
zombiepl   144      517    0      515     1     0     1     1     0     8    0
processpl  1232     562    0      515     5     0     5     5     0     8    0
procpl     664      734    0      678     6     0     6     6     0     8    0
sosppl     176        1    0        1     1     0     1     1     0     8    1
sockpl     752      326    0      294     7     0     7     7     0     8    2
mcl64k     65536      3    0        0     1     0     1     1     0     8    0
mcl8k      8192       2    0        0     1     0     1     1     0     8    0
mcl4k      4096     114    0        0    15     0    15    15     0     8    0
mcl2k      2048      19    0        0     3     0     3     3     0     8    0
mtagpl      96        2    0        0     1     0     1     1     0     8    0
mbufpl     256      129    0        0     9     0     9     9     0     8    0
bufpl      280     2586    0      105   178     0   178   178     0     8    0
anonpl      32     4205    0        0    34     0    34    34     0   246    0
amapchunkpl 152   11745    0    11284    29     0    29    29     0   158    7
amappl16   200     1592    0     1569     5     2     3     5     0     8    1
amappl15   192       25    0       25     1     1     0     1     0     8    0
amappl14   184      442    0      441     1     0     1     1     0     8    0
amappl13   176      126    0      114     1     0     1     1     0     8    0
amappl12   168      801    0      772     2     0     2     2     0     8    0
amappl11   160        8    0        8     1     1     0     1     0     8    0
amappl10   152       69    0       55     1     0     1     1     0     8    0
amappl9    144      290    0      289     1     0     1     1     0     8    0
amappl8    136      136    0      133     1     0     1     1     0     8    0
amappl7    128      152    0      139     1     0     1     1     0     8    0
amappl6    120      158    0      156     1     0     1     1     0     8    0
amappl5    112      140    0      129     1     0     1     1     0     8    0
amappl4    104      328    0      309     1     0     1     1     0     8    0
amappl3     96     2206    0     2100     4     0     4     4     0     8    0
amappl2     88      568    0      505     2     0     2     2     0     8    0
amappl1     80    10852    0    10246    20     0    20    20     0     8    4
amappl      88     3233    0     3076     5     0     5     5     0    92    0
uvmvnodes   80      108    0        0     3     0     3     3     0     8    0
dma65536   65536      1    0        1     1     0     1     1     0     8    1
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        6    0        0     1     0     1     1     0     8    0
uaddrrnd    24      545    0      515     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24      545    0      515     1     0     1     1     0     8    0
vmmpekpl   168     6572    0     6534     2     0     2     2     0     8    0
vmmpepl    168    44023    0    42158   108     0   108   108     0   357   10
vmsppl     488      544    0      515     5     0     5     5     0     8    0
rwobjpl     80    15475    0    14437    29     0    29    29     0     8    3
pdppl      4096    1097    0     1030   105    26    79    85     0     8   12
pvpl        32    12685    0        0   103     0   103   103     0   265    0
pmappl     256      544    0      515     3     0     3     3     0     8    0
extentpl    40       45    0       27     1     0     1     1     0     8    0
phpool     112      276    0       29     8     0     8     8     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
x86_ipi_db(ffffffff8390eff0) 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: 0x7b9a1b7a9a20, count: 12
ddb{0}> trace
x86_ipi_db(ffffffff8390eff0) 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: 0x7b9a1b7a9a20, count: -3
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8343180e) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_inode_alloc(fffffd806d4e2390,41ed,fffffd80097fd750,ffff80002a330018) at ffs_inode_alloc+0x94e
ufs_mkdir(ffff80002a330080) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
VOP_MKDIR(fffffd806d1643a0,ffff80002a3301e0,ffff80002a330210,ffff80002a330110) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
domkdirat(ffff8000fffefca0,ffffff9c,7e393542c6d0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3143
syscall(ffff80002a330390) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a330390) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7e393542c770, count: 7
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8343180e) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_inode_alloc(fffffd806d4e2390,41ed,fffffd80097fd750,ffff80002a330018) at ffs_inode_alloc+0x94e
ufs_mkdir(ffff80002a330080) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
VOP_MKDIR(fffffd806d1643a0,ffff80002a3301e0,ffff80002a330210,ffff80002a330110) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
domkdirat(ffff8000fffefca0,ffffff9c,7e393542c6d0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3143
syscall(ffff80002a330390) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a330390) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7e393542c770, count: -8

Crashes (55):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Assets (help?)	Manager	Title
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
2026/04/12 13:01	openbsd	6018ae1d0153	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/12 10:13	openbsd	6018ae1d0153	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/12 07:09	openbsd	6018ae1d0153	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/12 05:50	openbsd	de62a587e27d	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/12 03:05	openbsd	de62a587e27d	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/12 02:26	openbsd	de62a587e27d	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/12 02:08	openbsd	de62a587e27d	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
2026/04/11 15:23	openbsd	9bac450dd51b	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/11 10:21	openbsd	9bac450dd51b	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/11 09:35	openbsd	9bac450dd51b	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/10 18:41	openbsd	411a0c209e89	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/10 17:32	openbsd	411a0c209e89	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/10 16:39	openbsd	411a0c209e89	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/10 16:28	openbsd	411a0c209e89	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/10 07:15	openbsd	7bdd0d20c161	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/09 15:07	openbsd	f951d642cc52	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/09 11:46	openbsd	b0cdb9e75fee	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/09 07:43	openbsd	b0cdb9e75fee	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-main	panic: ffs_valloc: dup alloc
2026/04/09 00:59	openbsd	b0cdb9e75fee	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-main	panic: ffs_valloc: dup alloc
2026/04/09 00:33	openbsd	b0cdb9e75fee	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/08 23:16	openbsd	15cb22fda4ec	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-main	panic: ffs_valloc: dup alloc
2026/04/08 20:34	openbsd	15cb22fda4ec	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/08 15:28	openbsd	15cb22fda4ec	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-main	panic: ffs_valloc: dup alloc
2026/04/08 14:50	openbsd	15cb22fda4ec	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-main	panic: ffs_valloc: dup alloc
2026/04/08 13:36	openbsd	15cb22fda4ec	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-main	panic: ffs_valloc: dup alloc
2026/04/08 13:09	openbsd	15cb22fda4ec	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-main	panic: ffs_valloc: dup alloc
2026/04/08 11:09	openbsd	15cb22fda4ec	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-main	panic: ffs_valloc: dup alloc
2026/04/08 04:59	openbsd	7ed665c6a362	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/08 00:28	openbsd	7ed665c6a362	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-main	panic: ffs_valloc: dup alloc
2026/04/07 19:22	openbsd	c0c2c6a525e1	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/07 16:11	openbsd	c0c2c6a525e1	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-main	panic: ffs_valloc: dup alloc
2026/04/07 10:11	openbsd	c0c2c6a525e1	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/07 00:21	openbsd	fe321e1b70bc	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/06 14:19	openbsd	8a4a3a78bbe7	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-main	panic: ffs_valloc: dup alloc
2026/04/06 12:45	openbsd	8a4a3a78bbe7	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/06 08:40	openbsd	8a4a3a78bbe7	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/06 07:00	openbsd	8a4a3a78bbe7	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/06 06:46	openbsd	8a4a3a78bbe7	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-main	panic: ffs_valloc: dup alloc
2026/04/06 00:17	openbsd	bc22b0de1984	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	panic: ffs_valloc: dup alloc
2026/04/05 17:50	openbsd	bc22b0de1984	4b3d9a38	.config	console log	report	[disk image] [bsd.gdb] [kernel image]	ci-openbsd-multicore	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.