syzbot


panic: bad dir (3)

Status: upstream: reported C repro on 2022/04/19 10:50
Reported-by: syzbot+b10779f9ce6ca094b752@syzkaller.appspotmail.com
First crash: 293d, last: 53d
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd panic: bad dir C 1390 1368d 1369d 0/3 closed as invalid on 2019/05/12 18:53
openbsd panic: bad dir (2) 44 389d 400d 0/3 auto-closed as invalid on 2022/03/15 02:49

Sample crash report:
panic: bad dir
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*462243  81009      0           0          0    0K syz-executor1831808981
 141565  22777      0           0          0    1  syz-executor1831808981
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff825e34ee) at panic+0x177 sys/kern/subr_prf.c:198
ufs_lookup() at ufs_lookup+0x174c ufs_dirbad sys/ufs/ufs/ufs_lookup.c:609 [inline]
ufs_lookup() at ufs_lookup+0x174c sys/ufs/ufs/ufs_lookup.c:444
VOP_LOOKUP(fffffd806c6a9e68,ffff8000213061f0,ffff800021306220) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
vfs_lookup(ffff8000213061c0) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:560
namei(ffff8000213061c0) at namei+0x36a sys/kern/vfs_lookup.c:244
domknodat(ffff8000ffff5cf0,ffffff9c,20000000,80002005,2d94) at domknodat+0x92 sys/kern/vfs_syscalls.c:1580
syscall(ffff8000213063c0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff8000213063c0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffde640, 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: bad dir
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff825e34ee) at panic+0x177 sys/kern/subr_prf.c:198
ufs_lookup() at ufs_lookup+0x174c ufs_dirbad sys/ufs/ufs/ufs_lookup.c:609 [inline]
ufs_lookup() at ufs_lookup+0x174c sys/ufs/ufs/ufs_lookup.c:444
VOP_LOOKUP(fffffd806c6a9e68,ffff8000213061f0,ffff800021306220) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
vfs_lookup(ffff8000213061c0) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:560
namei(ffff8000213061c0) at namei+0x36a sys/kern/vfs_lookup.c:244
domknodat(ffff8000ffff5cf0,ffffff9c,20000000,80002005,2d94) at domknodat+0x92 sys/kern/vfs_syscalls.c:1580
syscall(ffff8000213063c0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff8000213063c0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffde640, count: -9
ddb{0}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff800021305da0
rbx               0xffffffff829e2b8f    cpu_info_full_primary+0x2b8f
rdx                            0x3fd
rcx                                0
rax                              0xf
r8                 0x101010101010101
r9                0x8080808080808080
r10               0x64bf8e866db68894
r11               0x3a0bdd498322f300
r12               0xffffffff829e2990    cpu_info_full_primary+0x2990
r13                                0
r14                                0
r15                              0x1
rip               0xffffffff81768868    db_enter+0x18
cs                               0x8
rflags                         0x246
rsp               0xffff800021305d90
ss                              0x10
db_enter+0x18:  addq    $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor1831808981) pid=462243 stat=onproc
    flags process=0 proc=0
    pri=50, usrpri=50, nice=20
    forw=0xffffffffffffffff, list=0xffff8000212b1268,0xffffffff82a5e258
    process=0xffff8000ffff14e0 user=0xffff800021301000, vmspace=0xfffffd806c668d00
    estcpu=0, cpticks=1, pctcpu=0.0
    user=0, sys=0, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
*81009  462243  89348      0  7           0                syz-executor1831808981
 24794   94493  11916      0  3        0x80  dklk          syz-executor1831808981
 57199   77948  58981      0  2           0                syz-executor1831808981
 51232  305471  93069      0  3        0x80  dklk          syz-executor1831808981
 86609  164015  11079      0  2           0                syz-executor1831808981
 22777  141565  58601      0  7           0                syz-executor1831808981
 94353  415273   5637      0  3        0x80  dklk          syz-executor1831808981
 83765  434663  60671      0  3        0x80  dklk          syz-executor1831808981
 93069  282367  98959      0  3        0x80  nanoslp       syz-executor1831808981
 11079  228824  98959      0  3        0x80  nanoslp       syz-executor1831808981
 89348  514967  98959      0  3        0x80  nanoslp       syz-executor1831808981
 58601   87797  98959      0  3        0x80  nanoslp       syz-executor1831808981
 58981  219417  98959      0  3        0x80  nanoslp       syz-executor1831808981
 60671  380644  98959      0  3        0x80  nanoslp       syz-executor1831808981
 11916   31129  98959      0  3        0x80  nanoslp       syz-executor1831808981
  5637  147876  98959      0  3        0x80  nanoslp       syz-executor1831808981
 98959   69854  36429      0  3        0x82  nanoslp       syz-executor1831808981
 36429  464878  22465      0  3    0x10008a  sigsusp       ksh
 22465    4300  12425      0  3        0x9a  kqread        sshd
 11264   38183      1      0  3    0x100083  ttyin         getty
 12425   24830      1      0  3        0x88  kqread        sshd
 65885  513033   4174     74  3   0x1100092  bpf           pflogd
  4174   90547      1      0  3        0x80  netio         pflogd
 95443  329947  92057     73  3   0x1100090  kqread        syslogd
 92057  266929      1      0  3    0x100082  netio         syslogd
 71450   12902      1      0  3    0x100080  kqread        resolvd
 75458  256065  28794     77  3    0x100092  kqread        dhcpleased
 80871  170608  28794     77  3    0x100092  kqread        dhcpleased
 28794  117797      1      0  3        0x80  kqread        dhcpleased
 59747  522978      0      0  3     0x14200  bored         smr
 33467    9374      0      0  2     0x14200                zerothread
 36374   98796      0      0  3     0x14200  aiodoned      aiodoned
 81469   18624      0      0  3     0x14200  syncer        update
  1695   27765      0      0  3     0x14200  cleaner       cleaner
 32878  390846      0      0  3     0x14200  reaper        reaper
 17137  129859      0      0  3     0x14200  pgdaemon      pagedaemon
 21241  475480      0      0  3     0x14200  bored         viomb
 20110  437271      0      0  3  0x40014200  acpi0         acpi0
 13427   57522      0      0  3  0x40014200                idle1
 60802  144933      0      0  3     0x14200  bored         softnet
 40779  432065      0      0  3     0x14200  bored         softnet
 81360  518498      0      0  3     0x14200  bored         softnet
 15842  154734      0      0  3     0x14200  bored         softnet
 56058  192771      0      0  3     0x14200  bored         systqmp
 41438  349950      0      0  2     0x14200                systq
 20766  402798      0      0  3  0x40014200  bored         softclock
 34430  484235      0      0  3  0x40014200                idle0
     1  506500      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{0}> show all locks
Process 81009 (syz-executor1831808981) thread 0xffff8000ffff5cf0 (462243)
exclusive rrwlock inode r = 0 (0xfffffd806c68ae68)
#0  witness_lock+0x44d
#1  rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3  VOP_LOCK+0x87 sys/kern/vfs_vops.c:518
#4  vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5  vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412
#6  namei+0x36a sys/kern/vfs_lookup.c:244
#7  domknodat+0x92 sys/kern/vfs_syscalls.c:1580
#8  syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#8  syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#9  Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82bad6e8)
#0  witness_lock+0x44d
#1  syscall+0x41d mi_syscall sys/sys/syscall_mi.h:100 [inline]
#1  syscall+0x41d sys/arch/amd64/amd64/trap.c:585
#2  Xsyscall+0x128
Process 57199 (syz-executor1831808981) thread 0xffff8000212b0a88 (77948)
exclusive rrwlock inode r = 0 (0xfffffd806c68a918)
#0  witness_lock+0x44d
#1  rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3  VOP_LOCK+0x87 sys/kern/vfs_vops.c:518
#4  ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140
#5  ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1353
#6  ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#7  ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1818
#8  ufs_mknod+0x4e sys/ufs/ufs/ufs_vnops.c:171
#9  VOP_MKNOD+0xbf sys/kern/vfs_vops.c:121
#10 domknodat+0x326 sys/kern/vfs_syscalls.c:1628
#11 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#11 syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#12 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806c68a808)
#0  witness_lock+0x44d
#1  rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3  VOP_LOCK+0x87 sys/kern/vfs_vops.c:518
#4  vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5  vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412
#6  namei+0x36a sys/kern/vfs_lookup.c:244
#7  domknodat+0x92 sys/kern/vfs_syscalls.c:1580
#8  syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#8  syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#9  Xsyscall+0x128
Process 86609 (syz-executor1831808981) thread 0xffff8000212b0008 (164015)
exclusive rrwlock inode r = 0 (0xfffffd806c68a6f8)
#0  witness_lock+0x44d
#1  rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3  VOP_LOCK+0x87 sys/kern/vfs_vops.c:518
#4  ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140
#5  ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1353
#6  ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#7  ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1818
#8  ufs_mknod+0x4e sys/ufs/ufs/ufs_vnops.c:171
#9  VOP_MKNOD+0xbf sys/kern/vfs_vops.c:121
#10 domknodat+0x326 sys/kern/vfs_syscalls.c:1628
#11 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#11 syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#12 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806c68a1a8)
#0  witness_lock+0x44d
#1  rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3  VOP_LOCK+0x87 sys/kern/vfs_vops.c:518
#4  vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5  vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412
#6  namei+0x36a sys/kern/vfs_lookup.c:244
#7  domknodat+0x92 sys/kern/vfs_syscalls.c:1580
#8  syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#8  syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#9  Xsyscall+0x128
Process 22777 (syz-executor1831808981) thread 0xffff8000212b02a8 (141565)
exclusive rrwlock inode r = 0 (0xfffffd806c68a5e8)
#0  witness_lock+0x44d
#1  rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3  VOP_LOCK+0x87 sys/kern/vfs_vops.c:518
#4  vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5  vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412
#6  namei+0x36a sys/kern/vfs_lookup.c:244
#7  domknodat+0x92 sys/kern/vfs_syscalls.c:1580
#8  syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#8  syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#9  Xsyscall+0x128
Process 41438 (systq) thread 0xffff8000211e87e0 (349950)
exclusive rwlock dklk r = 0 (0xffff8000006b6068)
#0  witness_lock+0x44d
#1  rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2  vndopen+0x8d sys/dev/vnd.c:186
#3  spec_open+0x3df sys/kern/spec_vnops.c:150
#4  VOP_OPEN+0x75 sys/kern/vfs_vops.c:138
#5  disk_readlabel+0xc5 sys/kern/subr_disk.c:1719
#6  disk_attach_callback+0x7c sys/kern/subr_disk.c:1127
#7  taskq_thread+0xe5 sys/kern/kern_task.c:449
#8  proc_trampoline+0x1c
shared rwlock systq r = 0 (0xffffffff829a1020)
#0  witness_lock+0x44d
#1  taskq_thread+0xca sys/kern/kern_task.c:445
#2  proc_trampoline+0x1c
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10165   6456K    6457K  78643K     11255        0
            pcb    13      8K       8K  78643K        13        0
         rtable    58      1K       2K  78643K       107        0
         ifaddr    30      8K       8K  78643K        33        0
       counters    40     33K      33K  78643K        40        0
       ioctlops     0      0K       4K  78643K      1479        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         4        0
         vnodes  1169     73K      73K  78643K      1183        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     2      1K       1K  78643K         2        0
         VM map     2      1K       1K  78643K         2        0
            sem     2      0K       0K  78643K         2        0
        dirhash    12      2K       2K  78643K        12        0
           ACPI  1697    195K     286K  78643K     12548        0
      file desc     1      0K       0K  78643K         1        0
           proc    67     91K      91K  78643K       282        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
       in_multi    11      0K       0K  78643K        11        0
    ether_multi     1      0K       0K  78643K         1        0
    ISOFS mount     1     32K      32K  78643K         1        0
  MSDOSFS mount     1     16K      16K  78643K         1        0
           ttys    25    122K     122K  78643K        25        0
           exec     0      0K       2K  78643K       430        0
            tdb     3      0K       0K  78643K         3        0
        pagedep     1      8K       8K  78643K         1        0
       inodedep     1     32K      32K  78643K         1        0
         newblk     1      0K       0K  78643K         1        0
        VM swap     8     62K      64K  78643K        10        0
       UVM amap   111     69K      69K  78643K      1599        0
       UVM aobj     3      2K       2K  78643K         3        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
            NDP     4      0K       0K  78643K         4        0
           temp    25   4725K    4789K  78643K      2774        0
         kqueue    11     16K      18K  78643K        24        0
      SYN cache     2     16K      16K  78643K         2        0
ddb{0}> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache    128       22    0        0     1     0     1     1     0     8    0
rtpcb      120       17    0       14     1     0     1     1     0     8    0
rtentry    112       23    0        1     1     0     1     1     0     8    0
unpcb      144       35    0       20     1     0     1     1     0     8    0
syncache   296        5    0        5     2     1     1     1     0     8    1
tcpcb      768        8    0        5     1     0     1     1     0     8    0
arp        120        2    0        0     1     0     1     1     0     8    0
inpcb      368       32    0       26     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
pfstitem    24        9    0        2     1     0     1     1     0     8    0
pfstkey    120        9    0        2     1     0     1     1     0     8    0
pfstate    336        9    0        2     1     0     1     1     0     8    0
pfrule     1360      21    0       16     2     1     1     2     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256       96    0        0     6     0     6     6     0     8    0
art_table   32       97    0        0     1     0     1     1     0     8    0
art_node    16       22    0        2     1     0     1     1     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256     1451    0       45    88     0    88    88     0     8    0
ffsino     272     1452    0       45    94     0    94    94     0     8    0
nchpl      144     1644    0       54    59     0    59    59     0     8    0
uvmvnodes   80     1463    0        0    30     0    30    30     0     8    0
vnodes     216     1463    0        0    82     0    82    82     0     8    0
namei      1024    4492    0     4489     3     1     2     2     0     8    1
percpumem   16       32    0        0     1     0     1     1     0     8    0
kstatmem   264        8    0        0     1     0     1     1     0     8    0
scxspl     216     4607    0     4607    10     7     3     8     0     8    3
plimitpl   152       24    0        9     1     0     1     1     0     8    0
sigapl     424      340    0      292     7     1     6     6     0     8    0
knotepl    120       43    0        0     2     0     2     2     0     8    0
kqueuepl   216       20    0       13     1     0     1     1     0     8    0
pipepl     320       86    0       83     2     1     1     1     0     8    0
fdescpl    496      323    0      292     4     0     4     4     0     8    0
filepl     152     1229    0     1167     3     0     3     3     0     8    0
lockfpl    104        6    0        4     1     0     1     1     0     8    0
lockfspl    48        4    0        2     1     0     1     1     0     8    0
sessionpl  144       26    0        9     1     0     1     1     0     8    0
pgrppl      48       26    0        9     1     0     1     1     0     8    0
ucredpl    104       70    0       57     1     0     1     1     0     8    0
zombiepl   144      292    0      292     2     1     1     1     0     8    1
processpl  1064     340    0      292     4     0     4     4     0     8    0
procpl     672      340    0      292     6     1     5     5     0     8    0
sockpl     488       84    0       60     5     1     4     4     0     8    0
mcl8k      8192       4    0        0     1     0     1     1     0     8    0
mcl4k      4096       4    0        0     1     0     1     1     0     8    0
mcl2k      2048      74    0        0     9     0     9     9     0     8    0
mtagpl      96        2    0        0     1     0     1     1     0     8    0
mbufpl     256      133    0        0     8     0     8     8     0     8    0
bufpl      288     2440    0       86   169     0   169   169     0     8    0
anonpl      24    43829    0    40929    21     3    18    18     0   186    0
amapchunkpl 152    2888    0     2739     8     2     6     6     0   158    0
amappl16   200       40    0       31     2     1     1     1     0     8    0
amappl15   192       74    0       66     1     0     1     1     0     8    0
amappl13   176       34    0       33     2     1     1     1     0     8    0
amappl12   168        3    0        3     2     1     1     1     0     8    1
amappl11   160       45    0       31     1     0     1     1     0     8    0
amappl9    144      936    0      936     3     2     1     1     0     8    1
amappl8    136      382    0      377     1     0     1     1     0     8    0
amappl7    128       69    0       61     1     0     1     1     0     8    0
amappl6    120      137    0      105     1     0     1     1     0     8    0
amappl5    112       88    0       78     1     0     1     1     0     8    0
amappl4    104      632    0      609     1     0     1     1     0     8    0
amappl3     96      454    0      418     1     0     1     1     0     8    0
amappl2     88      349    0      301     3     1     2     2     0     8    0
amappl1     80     9907    0     9268    16     2    14    14     0     8    0
amappl      88     1293    0     1221     3     1     2     2     0    92    0
dma4096    4096       1    0        1     1     1     0     1     0     8    0
dma1024    1024       1    0        0     1     0     1     1     0     8    0
dma256     256        6    0        6     1     1     0     1     0     8    0
dma128     128      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        2    0        0     1     0     1     1     0     8    0
uaddrrnd    24      324    0      293     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24      324    0      293     1     0     1     1     0     8    0
vmmpekpl   168     7043    0     7027     1     0     1     1     0     8    0
vmmpepl    168    29064    0    27573    70     5    65    65     0   357    0
vmsppl     368      323    0      293     3     0     3     3     0     8    0
rwobjpl     56    10556    0     8302    32     0    32    32     0     8    0
pdppl      4096     655    0      586    89    20    69    69     0     8    0
pvpl        32   135972    0   129918    56     7    49    49     0   265    0
pmappl     248      323    0      293     2     0     2     2     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112      482    0       24    14     0    14    14     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff825e34ee) at panic+0x177 sys/kern/subr_prf.c:198
ufs_lookup() at ufs_lookup+0x174c ufs_dirbad sys/ufs/ufs/ufs_lookup.c:609 [inline]
ufs_lookup() at ufs_lookup+0x174c sys/ufs/ufs/ufs_lookup.c:444
VOP_LOOKUP(fffffd806c6a9e68,ffff8000213061f0,ffff800021306220) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
vfs_lookup(ffff8000213061c0) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:560
namei(ffff8000213061c0) at namei+0x36a sys/kern/vfs_lookup.c:244
domknodat(ffff8000ffff5cf0,ffffff9c,20000000,80002005,2d94) at domknodat+0x92 sys/kern/vfs_syscalls.c:1580
syscall(ffff8000213063c0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff8000213063c0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffde640, count: -9
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x1a:        addq    $0x8,%rsp
x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82bad4e0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82bad4e0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
__mp_acquire_count(ffffffff82bad4e0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x3bb sys/kern/sched_bsd.c:415
sleep_finish(ffff800021317bc0,1) at sleep_finish+0x180 sys/kern/kern_synch.c:417
tsleep(fffffd806d440008,11,ffffffff82672c46,0) at tsleep+0x12c sys/kern/kern_synch.c:155
getblk(fffffd807efb41b0,1fa7a0,4000,0,ffffffffffffffff) at getblk+0x13c sys/kern/vfs_bio.c:1028
bread(fffffd807efb41b0,1fa7a0,4000,ffff800021317e68) at bread+0x3a bio_doread sys/kern/vfs_bio.c:433 [inline]
bread(fffffd807efb41b0,1fa7a0,4000,ffff800021317e68) at bread+0x3a sys/kern/vfs_bio.c:478
ffs_update(fffffd806c68aaa0,0) at ffs_update+0x14b sys/ufs/ffs/ffs_inode.c:91
ufs_reclaim(fffffd806c567b10) at ufs_reclaim+0xb9 sys/ufs/ufs/ufs_inode.c:152
ffs_reclaim(ffff800021317f68) at ffs_reclaim+0x36 sys/ufs/ffs/ffs_vnops.c:533
VOP_RECLAIM(fffffd806c567b10,ffff8000212b02a8) at VOP_RECLAIM+0x61 sys/kern/vfs_vops.c:503
end trace frame: 0xffff800021318000, count: 0
ddb{1}> trace
x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82bad4e0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82bad4e0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
__mp_acquire_count(ffffffff82bad4e0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x3bb sys/kern/sched_bsd.c:415
sleep_finish(ffff800021317bc0,1) at sleep_finish+0x180 sys/kern/kern_synch.c:417
tsleep(fffffd806d440008,11,ffffffff82672c46,0) at tsleep+0x12c sys/kern/kern_synch.c:155
getblk(fffffd807efb41b0,1fa7a0,4000,0,ffffffffffffffff) at getblk+0x13c sys/kern/vfs_bio.c:1028
bread(fffffd807efb41b0,1fa7a0,4000,ffff800021317e68) at bread+0x3a bio_doread sys/kern/vfs_bio.c:433 [inline]
bread(fffffd807efb41b0,1fa7a0,4000,ffff800021317e68) at bread+0x3a sys/kern/vfs_bio.c:478
ffs_update(fffffd806c68aaa0,0) at ffs_update+0x14b sys/ufs/ffs/ffs_inode.c:91
ufs_reclaim(fffffd806c567b10) at ufs_reclaim+0xb9 sys/ufs/ufs/ufs_inode.c:152
ffs_reclaim(ffff800021317f68) at ffs_reclaim+0x36 sys/ufs/ffs/ffs_vnops.c:533
VOP_RECLAIM(fffffd806c567b10,ffff8000212b02a8) at VOP_RECLAIM+0x61 sys/kern/vfs_vops.c:503
vclean(fffffd806c567b10,8,ffff8000212b02a8) at vclean+0x220 sys/kern/vfs_subr.c:1085
vgonel(fffffd806c567b10,ffff8000212b02a8) at vgonel+0x79 sys/kern/vfs_subr.c:1175
ufs_mknod(ffff8000213180c0) at ufs_mknod+0x11b sys/ufs/ufs/ufs_vnops.c:192
VOP_MKNOD(fffffd806c6a9298,ffff800021318220,ffff800021318250,ffff800021318150) at VOP_MKNOD+0xbf sys/kern/vfs_vops.c:121
domknodat(ffff8000212b02a8,ffffff9c,20000000,80002005,2d94) at domknodat+0x326 sys/kern/vfs_syscalls.c:1628
syscall(ffff8000213183f0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff8000213183f0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffde640, count: -21
ddb{1}> 

Crashes (10):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-openbsd-multicore 2022/10/08 14:43 openbsd 5cb1d9dce18f aea5da89 .config console log report syz C [disk image] [bsd.gdb] [kernel image] panic: bad dir
ci-openbsd-main 2022/09/24 02:27 openbsd 7dd170e2d888 0042f2b4 .config console log report syz panic: bad dir
ci-openbsd-multicore 2022/12/15 07:08 openbsd 635d3c69cac3 6f9c033e .config console log report [disk image] [bsd.gdb] [kernel image] panic: bad dir
ci-openbsd-main 2022/09/24 02:09 openbsd 7dd170e2d888 0042f2b4 .config console log report panic: bad dir
ci-openbsd-multicore 2022/08/04 07:49 openbsd 73f52ef7130c 1c9013ac .config console log report panic: bad dir
ci-openbsd-main 2022/05/31 20:00 openbsd a703828ff742 3666edfe .config console log report panic: bad dir
ci-openbsd-main 2022/05/28 11:36 openbsd 5e8e09569946 a46af346 .config console log report panic: bad dir
ci-openbsd-main 2022/05/22 06:59 openbsd 0be467f46ad6 7268fa62 .config console log report panic: bad dir
ci-openbsd-main 2022/04/30 03:16 openbsd b6589a98955e ad6b95d8 .config console log report panic: bad dir
ci-openbsd-main 2022/04/19 10:50 openbsd 501fda025ec2 c334415e .config console log report panic: bad dir
* Struck through repros no longer work on HEAD.