syzbot


panic: vrele: ref cnt

Status: auto-obsoleted due to no activity on 2024/11/20 19:05
Reported-by: syzbot+434b095a663ae07c0c09@syzkaller.appspotmail.com
First crash: 237d, last: 113d

Sample crash report:
panic: vrele: ref cnt
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 161865  91813      0           0          0    1  syz-executor
*437805  76932      0    0x500000  0x4000000    0K syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830dd29c) at panic+0x1e5 sys/kern/subr_prf.c:198
vrele(fffffd806fbf2dd8) at vrele+0x240 sys/kern/vfs_subr.c:813
unveil_destroy(ffff8000ffffad60) at unveil_destroy+0x9a sys/kern/kern_unveil.c:181
sys_pledge(ffff80002fd787c8,ffff8000371b7ef0,ffff8000371b7e40) at sys_pledge+0x399 sys/kern/kern_pledge.c:532
syscall(ffff8000371b7ef0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff8000371b7ef0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd2121497f0, count: 8
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: vrele: ref cnt
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830dd29c) at panic+0x1e5 sys/kern/subr_prf.c:198
vrele(fffffd806fbf2dd8) at vrele+0x240 sys/kern/vfs_subr.c:813
unveil_destroy(ffff8000ffffad60) at unveil_destroy+0x9a sys/kern/kern_unveil.c:181
sys_pledge(ffff80002fd787c8,ffff8000371b7ef0,ffff8000371b7e40) at sys_pledge+0x399 sys/kern/kern_pledge.c:532
syscall(ffff8000371b7ef0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff8000371b7ef0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd2121497f0, count: -7
ddb{0}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff8000371b7c40
rbx               0xffffffff834d5d87    cpu_info_full_primary+0x2d87
rdx                                0
rcx               0xffff80002fd787c8
rax               0xffffffff834d4ff0    cpu_info_full_primary+0x1ff0
r8                                 0
r9                0x8080808080808080
r10               0xe2fee97d19afeec5
r11               0xcb061d9c4ff14597
r12               0xffffffff834d5b88    cpu_info_full_primary+0x2b88
r13                                0
r14                                0
r15                              0x1
rip               0xffffffff817459e5    db_enter+0x25
cs                               0x8
rflags                         0x246
rsp               0xffff8000371b7c30
ss                              0x10
db_enter+0x25:  addq    $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor) tid=437805 pid=76932 tcnt=4 stat=onproc
    flags process=500000<PLEDGE,EXECPLEDGE> proc=4000000<THREAD>
    runpri=86, usrpri=86, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff8000ffff6530,0xffff8000ffff6cd8
    process=0xffff8000ffffad60 user=0xffff8000371b2000, vmspace=0xfffffd806bf65378
    estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 91813  161865   7604      0  7           0                syz-executor
 89944  161891  65818      0  2           0                syz-executor
 89944   92814  65818      0  2   0x4000000                syz-executor
  4514   19817  11810      0  2           0                syz-executor
  4514  211505  11810      0  3   0x4000080  fsleep        syz-executor
  9044  326840   8462      0  2         0x2                ndp
  8462  318832  16236      0  3    0x10008a  sigsusp       sh
 76932  361221  38769      0  2    0x500000                syz-executor
*76932  437805  38769      0  7   0x4500000                syz-executor
 76932  398779  38769      0  2   0x4500000                syz-executor
 76932  236637  38769      0  3   0x4500080  fsleep        syz-executor
 38621  439217  23204      0  2           0                syz-executor
 38621  422140  23204      0  3   0x4000080  fsleep        syz-executor
 72854   25659  13254     -1  2       0x490                syz-executor
 72854  300798  13254     -1  3   0x4000090  ttyin         syz-executor
 72854   10808  13254     -1  3   0x4000090  fsleep        syz-executor
 38769  298444  72667      0  2       0x482                syz-executor
 16236  423673  72667      0  3        0x82  wait          syz-executor
 16378  421655  72667      0  2         0x2                syz-executor
 65818  185454  72667      0  2       0x482                syz-executor
 23204  135154  72667      0  2         0x2                syz-executor
  7604   32407  72667      0  2       0x482                syz-executor
 13254  318783  72667      0  2         0x2                syz-executor
 11810  177125  72667      0  2         0x2                syz-executor
  4868  466340      1      0  3    0x100083  ttyin         getty
 26954   72841      0      0  3     0x14200  bored         sosplice
 72667   65969  56987      0  2         0x2                syz-executor
 56987  125920   2212      0  3    0x10008a  sigsusp       ksh
  2212  361608  11788      0  3        0x98  kqread        sshd-session
 11788  385441  53170      0  3        0x92  kqread        sshd-session
 53170  203310      1      0  3        0x88  kqread        sshd
 94244   26952  60739     74  3   0x1100092  bpf           pflogd
 60739  194342      1      0  3        0x80  sbwait        pflogd
 26211   93752  79463     73  2   0x1100010                syslogd
 79463  373937      1      0  3    0x100082  sbwait        syslogd
 67606   28387      1      0  3    0x100080  kqread        resolvd
 82155   95596  31724     77  3    0x100092  kqread        dhcpleased
 26151  471322  31724     77  3    0x100092  kqread        dhcpleased
 31724  256793      1      0  3        0x80  kqread        dhcpleased
 14786  175544      0      0  3     0x14200  bored         smr
 38050  152044      0      0  2     0x14200                zerothread
 21075  233218      0      0  3     0x14200  aiodoned      aiodoned
 12867  350851      0      0  3     0x14200  syncer        update
 34070  479416      0      0  3     0x14200  cleaner       cleaner
 90329   85004      0      0  3     0x14200  reaper        reaper
 22682  319520      0      0  3     0x14200  pgdaemon      pagedaemon
 77946  301873      0      0  3     0x14200  bored         viomb
 70019  331282      0      0  3  0x40014200  acpi0         acpi0
 65672  332847      0      0  3  0x40014200                idle1
 72112  378178      0      0  3     0x14200  bored         softnet3
 88362  340108      0      0  3     0x14200  bored         softnet2
 90746  232001      0      0  3     0x14200  bored         softnet1
 83723  385908      0      0  2     0x14200                softnet0
 93572  313258      0      0  3     0x14200  bored         systqmp
 33506  479829      0      0  3     0x14200  bored         systq
 62499  217512      0      0  2     0x14200                softclockmp
 88798  352585      0      0  2  0x40014200                softclock
 40168  478946      0      0  3  0x40014200                idle0
     1  510981      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{0}> show all locks
Process 76932 (syz-executor) thread 0xffff80002fd787c8 (437805)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83627dc0)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  sys_pledge+0x388 sys/kern/kern_pledge.c:531
#2  syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#2  syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
#3  Xsyscall+0x128
Process 76932 (syz-executor) thread 0xffff8000371d51f0 (398779)
exclusive rrwlock inode r = 0 (0xfffffd80743c11b8)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2  rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3  VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4  vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5  vrele+0xd0 sys/kern/vfs_subr.c:818
#6  unveil_destroy+0x9a sys/kern/kern_unveil.c:181
#7  sys_pledge+0x399 sys/kern/kern_pledge.c:532
#8  syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#8  syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
#9  Xsyscall+0x128
Process 16378 (syz-executor) thread 0xffff80002fd78540 (421655)
exclusive rrwlock inode r = 0 (0xfffffd80743c1f88)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2  rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3  VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4  ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:120
#5  ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230
#6  ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393
#7  ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112
#8  VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394
#9  domkdirat+0x179 sys/kern/vfs_syscalls.c:3100
#10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80743c12c8)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2  rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3  VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4  vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5  vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
#6  namei+0x7aa sys/kern/vfs_lookup.c:250
#7  domkdirat+0x8b sys/kern/vfs_syscalls.c:3085
#8  syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#8  syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#9  Xsyscall+0x128
Process 26211 (syslogd) thread 0xffff8000ffffdbe8 (93752)
exclusive rrwlock inode r = 0 (0xfffffd806e4a04e0)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2  rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3  VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4  vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5  sys_fsync+0x152 sys/kern/vfs_syscalls.c:2927
#6  syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#6  syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#7  Xsyscall+0x128
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10194  10173K   10431K 166960K     12191        0
            pcb    17     16K      16K 166960K       155        0
         rtable   216      7K       8K 166960K      1650        0
             pf    36     18K      82K 166960K       169        0
         ifaddr    41      7K       7K 166960K       217        0
        ifgroup    55      2K       2K 166960K       240        0
         sysctl     3      0K       0K 166960K         3        0
       counters    64     36K      36K 166960K       156        0
       ioctlops     0      0K       4K 166960K      1578        0
            iov     0      0K      16K 166960K        40        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1585    100K     100K 166960K      2643        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K       5K 166960K         7        0
         VM map     2      1K       1K 166960K         2        0
            sem    12      0K       0K 166960K        85        0
        dirhash    12      2K       2K 166960K        18        0
           ACPI  1697    195K     286K 166960K     12548        0
      file desc    18     65K      97K 166960K      1228        0
          sigio     0      0K       0K 166960K        14        0
           proc    73    103K     128K 166960K      1701        0
        subproc   104      6K       6K 166960K       624        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     0      0K       0K 166960K        64        0
       in_multi    95      7K       7K 166960K       557        0
    ether_multi     1      0K       0K 166960K         6        0
            mrt     1      0K       0K 166960K         3        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys    91    413K     413K 166960K        91        0
           exec     0      0K       1K 166960K      1017        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   235     93K     108K 166960K     10689        0
       UVM aobj    50      4K       4K 166960K        50        0
     pinsyscall    43     86K     108K 166960K      3344        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K        63        0
            NDP    18      0K       2K 166960K       154        0
           temp    57   6819K    6883K 166960K     39549        0
         kqueue    13     20K      28K 166960K        98        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       24    0        0     1     0     1     1     0     8    0
rtpcb      120      164    0      161     1     0     1     1     0     8    0
rtentry    112      576    0      479     4     1     3     4     0     8    0
unpcb      144      574    0      557     6     5     1     4     0     8    0
syncache   336        3    0        3     1     1     0     1     0     8    0
tcpcb      808      317    0      311    16    15     1     8     0     8    0
arp        120      103    0       85     1     0     1     1     0     8    0
inpcb      336     1256    0     1246    27    25     2    13     0     8    1
nd6        136      150    0      126     1     0     1     1     0     8    0
pkpcb       40        3    0        3     3     2     1     1     0     8    1
kcovpl      48       48    0       40     1     0     1     1     0     8    0
ppxss      1168       2    0        2     1     1     0     1     0     8    0
pffrag     232        2    0        1     1     0     1     1     0   482    0
pffrnode    88        2    0        1     1     0     1     1     0     8    0
pffrent     40        4    0        3     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
pfrktable  1344       2    0        2     2     2     0     1     0     8    0
pfanchor   1288       2    0        0     1     0     1     1     0     8    0
pftag       88        3    0        2     1     0     1     1     0     8    0
pfqueue    264        1    0        0     1     0     1     1     0     8    0
pfstitem    24       98    0       57     1     0     1     1     0     8    0
pfstkey    128       98    0       57     2     0     2     2     0     8    0
pfstate    376       96    0       57     4     0     4     4     0     8    0
pfrule     1344      29    0       23     2     1     1     2     0     8    0
art_heap8  4096       2    0        1     2     1     1     2     0     8    0
art_heap4  256     2270    0     1848    30     3    27    29     0     8    0
art_table   32     2272    0     1849     4     0     4     4     0     8    0
art_node    16      573    0      486     1     0     1     1     0     8    0
sysvmsgpl   40        4    0        2     2     1     1     1     0     8    0
semupl     112        1    0        1     1     1     0     1     0     8    0
semapl     112       82    0       72     1     0     1     1     0     8    0
shmpl      112       47    0        0     2     0     2     2     0     8    0
dirhash    1024      21    0        4     3     0     3     3     0     8    0
dino2pl    256     2628    0     1045   100     0   100   100     0     8    0
ffsino     272     2628    0     1045   106     0   106   106     0     8    0
nchpl      144     3596    0     1855    65     0    65    65     0     8    0
uvmvnodes   80     3779    0        0    78     0    78    78     0     8    0
vnodes     216     3779    0        0   210     0   210   210     0     8    0
namei      1024   16412    0    16411     5     4     1     2     0     8    0
percpumem   16       92    0       46     1     0     1     1     0     8    0
vcpupl     3904       5    0        0     1     0     1     1     0     8    0
vmpool     696        7    0        2     1     0     1     1     0     8    0
kstatmem   264      116    0       92     2     0     2     2     0     8    0
scsiplug    72        2    0        2     2     2     0     1     0     8    0
scxspl     216    28010    0    28010    15    14     1     8     1     8    1
plimitpl   152      325    0      308     1     0     1     1     0     8    0
sigapl     424     1449    0     1398    10     3     7     7     0     8    0
futexpl     64     8991    0     8987     4     3     1     1     0     8    0
knotepl    120      813    0        0    25     0    25    25     0     8    0
kqueuepl   216      226    0      216     5     4     1     5     0     8    0
pipepl     320      377    0      350     6     3     3     6     0     8    0
fdescpl    496     1430    0     1398     8     3     5     6     0     8    0
filepl     152     7898    0     7645    28    16    12    18     0     8    1
lockfpl    104      207    0      204     1     0     1     1     0     8    0
lockfspl    48       83    0       80     1     0     1     1     0     8    0
sessionpl  144       64    0       55     1     0     1     1     0     8    0
pgrppl      48      158    0      141     1     0     1     1     0     8    0
ucredpl    104     1073    0     1059     1     0     1     1     0     8    0
zombiepl   144     1398    0     1398     1     0     1     1     0     8    1
processpl  1160    1449    0     1398     5     1     4     5     0     8    0
procpl     648     2354    0     2295     8     2     6     7     0     8    0
srpgc       96        3    0        3     2     2     0     1     0     8    0
sosppl     168        4    0        4     2     2     0     1     0     8    0
sockpl     664     2002    0     1972    31    27     4    15     0     8    1
mcl64k     65536      2    0        0     1     0     1     1     0     8    0
mcl16k     16384      2    0        0     1     0     1     1     0     8    0
mcl12k     12288      2    0        0     1     0     1     1     0     8    0
mcl8k      8192       6    0        0     1     0     1     1     0     8    0
mcl4k      4096       2    0        0     1     0     1     1     0     8    0
mcl2k2     2112       1    0        0     1     0     1     1     0     8    0
mcl2k      2048     249    0        0    32     0    32    32     0     8    0
mtagpl      96        5    0        0     1     0     1     1     0     8    0
mbufpl     256      449    0        0    26     0    26    26     0     8    0
bufpl      280     8248    0     1392   490     0   490   490     0     8    0
anonpl      24   245631    0   241121    85    31    54    82     0   185   22
amapchunkpl 152   33748    0    33268    44    13    31    43     0   158   10
amappl16   200     4574    0     4491    26    17     9    14     0     8    4
amappl15   192        8    0        8     1     1     0     1     0     8    0
amappl14   184      199    0      187     1     0     1     1     0     8    0
amappl13   176        9    0        9     1     1     0     1     0     8    0
amappl12   168     2714    0     2681     4     2     2     3     0     8    0
amappl11   160       57    0       43     1     0     1     1     0     8    0
amappl10   152       70    0       70     1     1     0     1     0     8    0
amappl9    144      140    0      140     1     1     0     1     0     8    0
amappl8    136       22    0       20     1     0     1     1     0     8    0
amappl7    128      184    0      172     1     0     1     1     0     8    0
amappl6    120      567    0      564     1     0     1     1     0     8    0
amappl5    112      293    0      281     1     0     1     1     0     8    0
amappl4    104      432    0      412     1     0     1     1     0     8    0
amappl3     96     6510    0     6400     4     0     4     4     0     8    0
amappl2     88     1181    0     1114     2     0     2     2     0     8    0
amappl1     80    13447    0    12847    18     4    14    15     0     8    1
amappl      88     9990    0     9823     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     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       18    0       17     1     0     1     1     0     8    0
aobjpl      72       49    0        0     1     0     1     1     0     8    0
uaddrrnd    24     1437    0     1400     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     1437    0     1400     1     0     1     1     0     8    0
vmmpekpl   168    14215    0    14172     3     0     3     3     0     8    0
vmmpepl    168    94038    0    92105    99    11    88    93     0   357    0
vmsppl     440     1436    0     1400     7     2     5     5     0     8    0
rwobjpl     56    32971    0    28122    70     1    69    69     0     8    0
pdppl      4096    2881    0     2805   158    77    81    87     0     8    5
pvpl        32    44150    0        0   357     1   356   356     0   265    0
pmappl     248     1436    0     1400     3     0     3     3     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112      516    0      130    12     0    12    12     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:437
panic(ffffffff830dd29c) at panic+0x1e5 sys/kern/subr_prf.c:198
vrele(fffffd806fbf2dd8) at vrele+0x240 sys/kern/vfs_subr.c:813
unveil_destroy(ffff8000ffffad60) at unveil_destroy+0x9a sys/kern/kern_unveil.c:181
sys_pledge(ffff80002fd787c8,ffff8000371b7ef0,ffff8000371b7e40) at sys_pledge+0x399 sys/kern/kern_pledge.c:532
syscall(ffff8000371b7ef0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff8000371b7ef0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd2121497f0, count: -7
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393
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(ffffffff83627bb8) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:114 [inline]
__mp_lock(ffffffff83627bb8) at __mp_lock+0x190 sys/kern/kern_lock.c:144
syscall(ffff8000371ff170) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff8000371ff170) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x78c7559fc290, count: 9
ddb{1}> trace
x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393
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(ffffffff83627bb8) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:114 [inline]
__mp_lock(ffffffff83627bb8) at __mp_lock+0x190 sys/kern/kern_lock.c:144
syscall(ffff8000371ff170) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff8000371ff170) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x78c7559fc290, count: -6

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/08/22 19:04 openbsd 6e92fa473ce3 aa99fc33 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: vrele: ref cnt
2024/07/30 11:06 openbsd ad4b79dec544 a4e01e1e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: vrele: ref cnt
2024/05/14 09:55 openbsd 5dea098c4cfa fdb4c10c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: vrele: ref cnt
2024/04/21 11:30 openbsd 8a9424f8c5c9 af24b050 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: vrele: ref cnt
* Struck through repros no longer work on HEAD.