syzbot


uvm_fault: ufs_lookup

Status: upstream: reported C repro on 2022/01/14 08:52
Reported-by: syzbot+d0ae3406b0874e045aa1@syzkaller.appspotmail.com
First crash: 885d, last: 39d
Last patch testing requests (8)
Created Duration User Patch Repo Result
2024/04/19 10:24 15m retest repro openbsd report log
2024/04/19 10:24 1m retest repro openbsd error OK
2024/02/01 18:06 16m retest repro openbsd report log
2024/02/01 18:06 9m retest repro openbsd error OK
2023/11/23 10:33 9m retest repro openbsd error OK
2023/11/07 05:21 10m retest repro openbsd report log
2023/09/14 10:20 12m retest repro openbsd error OK
2023/07/06 10:09 8m retest repro openbsd error OK

Sample crash report:
uvm_fault(0xffffffff82d8afc8, 0xffff8000124ef004, 0, 1) -> d
kernel: page fault trap, code=0
Stopped at      ufs_lookup+0x4ce:       movzwl  0x4(%r15,%r13,1),%ebx
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 439309  81776      0           0          0    0  syz-executor714944071
*367405  64437      0           0          0    1K syz-executor714944071
ufs_lookup() at ufs_lookup+0x4ce sys/ufs/ufs/ufs_lookup.c:281
VOP_LOOKUP(fffffd8068cef600,ffff8000212631a8,ffff8000212631d8) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
vfs_lookup(ffff800021263178) at vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566
namei(ffff800021263178) at namei+0x55a sys/kern/vfs_lookup.c:250
dounlinkat(ffff8000211db808,ffffff9c,77499618a190,0) at dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847
syscall(ffff800021263350) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800021263350) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x77499618a640, 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{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: uvm_fault(0xffffffff82d8afc8, 0xffff8000124ef004, 0, 1) -> d
ddb{1}> trace
ufs_lookup() at ufs_lookup+0x4ce sys/ufs/ufs/ufs_lookup.c:281
VOP_LOOKUP(fffffd8068cef600,ffff8000212631a8,ffff8000212631d8) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
vfs_lookup(ffff800021263178) at vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566
namei(ffff800021263178) at namei+0x55a sys/kern/vfs_lookup.c:250
dounlinkat(ffff8000211db808,ffffff9c,77499618a190,0) at dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847
syscall(ffff800021263350) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800021263350) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x77499618a640, count: -7
ddb{1}> show registers
rdi                                0
rsi                                0
rbp               0xffff800021262fb0
rbx                                0
rdx               0xfffffd806ca52040
rcx                       0xffffffff
rax               0xfffffd806ce56a50
r8                0xffffffffffffffff
r9                0xfffffd807f7d7888
r10               0xf4a9a6f4f29946d1
r11               0xc64e7f0bbc658523
r12                                0
r13                                0
r14                                0
r15               0xffff8000124ef000
rip               0xffffffff8270491e    ufs_lookup+0x4ce
cs                               0x8
rflags                       0x10202    __ALIGN_SIZE+0xf202
rsp               0xffff800021262eb0
ss                              0x10
ufs_lookup+0x4ce:       movzwl  0x4(%r15,%r13,1),%ebx
ddb{1}> show proc
PROC (syz-executor714944071) tid=367405 pid=64437 tcnt=1 stat=onproc
    flags process=0 proc=0
    runpri=76, usrpri=76, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0
    forw=0xffffffffffffffff, list=0xffff8000211eb550,0xffff8000211dad78
    process=0xffff800021222190 user=0xffff80002125e000, vmspace=0xfffffd807eff81d0
    estcpu=36, cpticks=3, pctcpu=1.6, user=0, sys=1, intr=0
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 60322  172325  23132      0  2           0                syz-executor714944071
 79757  455089  93338      0  2           0                syz-executor714944071
 28323   89367  12357      0  2           0                syz-executor714944071
 12357  177072   1901      0  3        0x80  nanoslp       syz-executor714944071
 93338  322735   1901      0  2           0                syz-executor714944071
 36232  142274   1901      0  2           0                syz-executor714944071
 81776  439309   1901      0  7           0                syz-executor714944071
*64437  367405   1901      0  7           0                syz-executor714944071
 18396  180090   1901      0  2           0                syz-executor714944071
 23132   64642   1901      0  2           0                syz-executor714944071
 76499  149857   1901      0  3        0x80  nanoslp       syz-executor714944071
  1901  371025   9335      0  3        0x82  nanoslp       syz-executor714944071
  9335  167302  80506      0  3    0x10008a  sigsusp       ksh
 80506  477544   2579      0  3        0x9a  kqread        sshd
 27296  185970      1      0  3    0x100083  ttyin         getty
  2579  228357      1      0  3        0x88  kqread        sshd
 98995   64434    204     74  3   0x1100092  bpf           pflogd
   204  228554      1      0  3        0x80  netio         pflogd
 39139   39713  47215     73  3   0x1100090  kqread        syslogd
 47215  441410      1      0  3    0x100082  netio         syslogd
 93419  380938      1      0  3    0x100080  kqread        resolvd
 12250   63890  40780     77  3    0x100092  kqread        dhcpleased
 44426  496968  40780     77  3    0x100092  kqread        dhcpleased
 40780  513708      1      0  3        0x80  kqread        dhcpleased
 55409  292663      0      0  3     0x14200  bored         smr
 34022   25268      0      0  2     0x14200                zerothread
 91351   63771      0      0  3     0x14200  aiodoned      aiodoned
   370  227839      0      0  3     0x14200  syncer        update
 37470  155649      0      0  3     0x14200  cleaner       cleaner
 90686  233182      0      0  3     0x14200  reaper        reaper
 27778  156143      0      0  3     0x14200  pgdaemon      pagedaemon
 93832  303299      0      0  3     0x14200  bored         viomb
 92366  322842      0      0  3  0x40014200  acpi0         acpi0
 33761  448401      0      0  3  0x40014200                idle1
 72074   78315      0      0  3     0x14200  bored         softnet3
 98142  518561      0      0  3     0x14200  bored         softnet2
   943  126037      0      0  3     0x14200  bored         softnet1
 19461   23463      0      0  3     0x14200  bored         softnet0
 24047  257041      0      0  3     0x14200  bored         systqmp
 69877  429324      0      0  3     0x14200  bored         systq
 79719  300144      0      0  3     0x14200  tmoslp        softclockmp
 84937  275865      0      0  3  0x40014200  tmoslp        softclock
 52547  141682      0      0  3  0x40014200                idle0
     1  481727      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{1}> show all locks
Process 36232 (syz-executor714944071) thread 0xffff8000211daac0 (142274)
exclusive rrwlock inode r = 0 (0xfffffd8068cfae70)
#0  witness_lock+0x447
#1  rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2  rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3  VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4  vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5  vget+0x200 sys/kern/vfs_subr.c:676
#6  ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119
#7  ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314
#8  ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487
#9  VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566
#11 namei+0x55a sys/kern/vfs_lookup.c:250
#12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847
#13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8068ce9c50)
#0  witness_lock+0x447
#1  rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2  rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3  VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4  vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5  vget+0x200 sys/kern/vfs_subr.c:676
#6  cache_lookup+0x2b4 sys/kern/vfs_cache.c:222
#7  ufs_lookup+0x1ac sys/ufs/ufs/ufs_lookup.c:162
#8  VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
#9  vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566
#10 namei+0x55a sys/kern/vfs_lookup.c:250
#11 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847
#12 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#12 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#13 Xsyscall+0x128
Process 64437 (syz-executor714944071) thread 0xffff8000211db808 (367405)
exclusive rrwlock inode r = 0 (0xfffffd8068d115f8)
#0  witness_lock+0x447
#1  rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2  rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3  VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4  vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5  vget+0x200 sys/kern/vfs_subr.c:676
#6  cache_lookup+0x2b4 sys/kern/vfs_cache.c:222
#7  ufs_lookup+0x1ac sys/ufs/ufs/ufs_lookup.c:162
#8  VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
#9  vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566
#10 namei+0x55a sys/kern/vfs_lookup.c:250
#11 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847
#12 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#12 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#13 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d15a68)
#0  witness_lock+0x447
#1  syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline]
#1  syscall+0x5cd sys/arch/amd64/amd64/trap.c:623
#2  Xsyscall+0x128
Process 18396 (syz-executor714944071) thread 0xffff8000211eb550 (180090)
exclusive rrwlock inode r = 0 (0xfffffd8068d20708)
#0  witness_lock+0x447
#1  rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2  rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3  VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4  ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140
#5  ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1343
#6  ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394
#7  ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149
#8  VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388
#9  domkdirat+0x125 sys/kern/vfs_syscalls.c:3073
#10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806d5885e8)
#0  witness_lock+0x447
#1  rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2  rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3  VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4  vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5  vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418
#6  namei+0x55a sys/kern/vfs_lookup.c:250
#7  domkdirat+0x79 sys/kern/vfs_syscalls.c:3058
#8  syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#8  syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#9  Xsyscall+0x128
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10163   6456K    6457K  78643K     11241        0
            pcb    13      8K       8K  78643K        13        0
         rtable    58      1K       2K  78643K       108        0
             pf    15      6K      10K  78643K        26        0
         ifaddr    13      9K       9K  78643K        13        0
        ifgroup    22      1K       1K  78643K        22        0
       counters    44     33K      33K  78643K        44        0
       ioctlops     0      0K       4K  78643K      1475        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         4        0
         vnodes  1176     74K      74K  78643K      1193        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       302        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       1K  78643K       260        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   125      6K       7K  78643K     12558        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     1   5904K    5968K  78643K     66430        0
         kqueue    11     16K      18K  78643K        24        0
      SYN cache     2     16K      16K  78643K         2        0
ddb{1}> 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   304        5    0        5     2     2     0     1     0     8    0
tcpqe       32      118    0      118     1     1     0     1     0     8    0
tcpcb      808        8    0        5     1     0     1     1     0     8    0
arp        120        2    0        0     1     0     1     1     0     8    0
inpcb      368       33    0       27     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        7     2     1     1     1     0     8    0
pfstkey    128        9    0        7     2     1     1     1     0     8    0
pfstate    376        9    0        7     2     1     1     1     0     8    0
pfrule     1344      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       97    0        0     7     0     7     7     0     8    0
art_table   32       98    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    21253    0    16174   318     0   318   318     0     8    0
ffsino     272    21253    0    16174   339     0   339   339     0     8    0
nchpl      144    41249    0    39660    60     0    60    60     0     8    0
uvmvnodes   80     6153    0        0   126     0   126   126     0     8    0
vnodes     216     6153    0        0   342     0   342   342     0     8    0
namei      1024   93684    0    93682     3     1     2     2     0     8    1
percpumem   16       35    0        0     1     0     1     1     0     8    0
kstatmem   264        8    0        0     1     0     1     1     0     8    0
scxspl     216   102371    0   102371    16    10     6     8     1     8    6
plimitpl   152       17    0       10     1     0     1     1     0     8    0
sigapl     424    10244    0    10199     7     1     6     6     0     8    0
knotepl    120       47    0        0     2     0     2     2     0     8    0
kqueuepl   216       20    0       13     1     0     1     1     0     8    0
pipepl     320       91    0       88     2     1     1     1     0     8    0
fdescpl    496    10226    0    10199     4     0     4     4     0     8    0
filepl     152    30970    0    30905     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       18    0        9     1     0     1     1     0     8    0
pgrppl      48       18    0        9     1     0     1     1     0     8    0
ucredpl    104       81    0       68     1     0     1     1     0     8    0
zombiepl   144    10200    0    10199     2     1     1     1     0     8    0
processpl  1072   10244    0    10199     4     0     4     4     0     8    0
procpl     680    10244    0    10199     6     1     5     5     0     8    1
sockpl     488       85    0       61     5     1     4     4     0     8    0
mcl8k      8192       5    0        0     1     0     1     1     0     8    0
mcl4k      4096       4    0        0     1     0     1     1     0     8    0
mcl2k      2048     295    0        0    34     5    29    34     0     8    0
mtagpl      96        2    0        0     1     0     1     1     0     8    0
mbufpl     256      331    0        0    18     1    17    18     0     8    0
bufpl      288    22411    0    16219   443     0   443   443     0     8    0
anonpl      24   268264    0   265991    27    13    14    25     0   186    0
amapchunkpl 152   18736    0    18514    10     1     9     9     0   158    0
amappl16   200    15471    0    15461     6     5     1     5     0     8    0
amappl15   192        8    0        8     1     1     0     1     0     8    0
amappl14   184      111    0       99     1     0     1     1     0     8    0
amappl13   176       18    0       18     1     1     0     1     0     8    0
amappl12   168      863    0      841     2     1     1     2     0     8    0
amappl11   160       63    0       49     1     0     1     1     0     8    0
amappl10   152       18    0       17     1     0     1     1     0     8    0
amappl9    144      212    0      212     1     1     0     1     0     8    0
amappl8    136       36    0       34     1     0     1     1     0     8    0
amappl7    128       22    0       21     1     0     1     1     0     8    0
amappl6    120      148    0      133     1     0     1     1     0     8    0
amappl5    112      118    0      107     1     0     1     1     0     8    0
amappl4    104    10373    0    10329     2     0     2     2     0     8    0
amappl3     96     2173    0     2126     3     1     2     2     0     8    0
amappl2     88    10396    0    10345     2     0     2     2     0     8    0
amappl1     80    39142    0    38641    16     4    12    12     0     8    0
amappl      88    12266    0    12187     2     0     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    10226    0    10199     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24    10226    0    10199     1     0     1     1     0     8    0
vmmpekpl   168    29050    0    29027     2     0     2     2     0     8    0
vmmpepl    168   283284    0   281953    70     9    61    63     0   357    3
vmsppl     464    10225    0    10199     4     0     4     4     0     8    0
rwobjpl     56    34122    0    27212   100     2    98    98     0     8    0
pdppl      4096   20460    0    20398   138    72    66    70     0     8    4
pvpl        32   808980    0   803624    65    20    45    57     0   265    0
pmappl     248    10225    0    10199     2     0     2     2     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112     1317    0       82    36     0    36    36     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x1e:        addq    $0x8,%rsp
x86_ipi_db(ffffffff82c0cff0) at x86_ipi_db+0x1e 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+0x27
__mp_lock(ffffffff82d15860) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82d15860) at __mp_lock+0x129 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x27
__mp_lock(ffffffff82d15860) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82d15860) at __mp_lock+0x122 sys/kern/kern_lock.c:147
syscall(ffff800021269160) at syscall+0x52b mi_syscall_return sys/sys/syscall_mi.h:138 [inline]
syscall(ffff800021269160) at syscall+0x52b sys/arch/amd64/amd64/trap.c:644
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x77499618a640, count: 6
ddb{0}> trace
x86_ipi_db(ffffffff82c0cff0) at x86_ipi_db+0x1e 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+0x27
__mp_lock(ffffffff82d15860) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82d15860) at __mp_lock+0x129 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x27
__mp_lock(ffffffff82d15860) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82d15860) at __mp_lock+0x122 sys/kern/kern_lock.c:147
syscall(ffff800021269160) at syscall+0x52b mi_syscall_return sys/sys/syscall_mi.h:138 [inline]
syscall(ffff800021269160) at syscall+0x52b sys/arch/amd64/amd64/trap.c:644
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x77499618a640, count: -9
ddb{0}> machine ddbcpu 1
Stopped at      ufs_lookup+0x4ce:       movzwl  0x4(%r15,%r13,1),%ebx
ufs_lookup() at ufs_lookup+0x4ce sys/ufs/ufs/ufs_lookup.c:281
VOP_LOOKUP(fffffd8068cef600,ffff8000212631a8,ffff8000212631d8) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
vfs_lookup(ffff800021263178) at vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566
namei(ffff800021263178) at namei+0x55a sys/kern/vfs_lookup.c:250
dounlinkat(ffff8000211db808,ffffff9c,77499618a190,0) at dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847
syscall(ffff800021263350) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800021263350) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x77499618a640, count: 8
ddb{1}> trace
ufs_lookup() at ufs_lookup+0x4ce sys/ufs/ufs/ufs_lookup.c:281
VOP_LOOKUP(fffffd8068cef600,ffff8000212631a8,ffff8000212631d8) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
vfs_lookup(ffff800021263178) at vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566
namei(ffff800021263178) at namei+0x55a sys/kern/vfs_lookup.c:250
dounlinkat(ffff8000211db808,ffffff9c,77499618a190,0) at dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847
syscall(ffff800021263350) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800021263350) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x77499618a640, count: -7

Crashes (45):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/10/24 05:19 openbsd e0c1f4798a44 af8d2e46 .config console log report syz C [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2023/02/26 22:49 openbsd 1e5b016c5082 e792ae78 .config console log report syz [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2024/05/09 10:15 openbsd 1b9cf3a3fa61 20bf80e1 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2024/04/05 10:20 openbsd 2ee472d028ec 6ee49f2e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2024/03/27 04:52 openbsd c2de78a730b8 6ee49f2e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2024/03/26 05:24 openbsd 7c54c7664c87 6ee49f2e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2024/03/23 17:40 openbsd f64445590ae9 6ee49f2e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2024/03/21 03:04 openbsd 110c1584e6f0 6ee49f2e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2024/03/17 14:28 openbsd d108608d837e 6ee49f2e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2024/03/12 17:03 openbsd 3b374a56007a 6ee49f2e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2024/03/05 16:25 openbsd 20110d46fc7f 9ed46f64 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2024/03/04 14:13 openbsd a782303f51d4 0f110c12 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2024/02/27 04:26 openbsd 53ff252d078f 05e69c83 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2024/02/22 13:39 openbsd 921b38ae7cad 345111b5 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2024/01/18 17:58 openbsd d1ecb0c52710 239abf84 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2024/01/14 07:22 openbsd b51570b5eca2 551587c1 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2024/01/12 08:18 openbsd c069659183f0 dda5a988 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2023/12/25 08:14 openbsd b7a40dd62413 fb427a07 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2023/10/23 22:59 openbsd e0c1f4798a44 af8d2e46 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2023/10/20 04:15 openbsd f2babcd2b2c6 a42250d2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2023/08/18 16:51 openbsd 5355e038b0b0 937e0ad7 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2023/04/27 10:09 openbsd 1e5b016c5082 6f5b1cc4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2023/04/02 13:58 openbsd 1e5b016c5082 f325deb0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2023/03/25 14:18 openbsd 1e5b016c5082 fbf0499a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2023/03/22 09:11 openbsd 1e5b016c5082 8b4eb097 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2023/02/27 05:30 openbsd 1e5b016c5082 e792ae78 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2023/02/26 21:09 openbsd 1e5b016c5082 e792ae78 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2023/02/14 05:05 openbsd 1e5b016c5082 93ae7e0a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2023/02/11 09:07 openbsd 8d8d84f6e2ce 93e26d60 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2023/02/09 21:31 openbsd 0b18df416c37 07980f9d .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2022/11/12 05:49 openbsd 3eb75377085e f42ee5d8 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2022/10/24 18:24 openbsd 214e94d30852 ff2fe65d .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2022/10/08 14:29 openbsd 5cb1d9dce18f aea5da89 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: ufs_lookup
2022/09/22 20:38 openbsd 46a03a1ef9f5 0042f2b4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: ufs_lookup
2022/08/27 16:27 openbsd 475112fd38b6 07177916 .config console log report ci-openbsd-multicore uvm_fault: ufs_lookup
2022/08/25 05:58 openbsd 55a219b1c01f 514514f6 .config console log report ci-openbsd-multicore uvm_fault: ufs_lookup
2022/08/15 20:15 openbsd 08fede8d77b9 8dfcaa3d .config console log report ci-openbsd-multicore uvm_fault: ufs_lookup
2022/06/14 01:11 openbsd db879ab8e4d2 0f087040 .config console log report ci-openbsd-main uvm_fault: ufs_lookup
2022/05/16 12:50 openbsd 9d7872c9260d 744a39e2 .config console log report ci-openbsd-multicore uvm_fault: ufs_lookup
2022/05/13 18:40 openbsd 9eb589bc5493 7ce5a022 .config console log report ci-openbsd-main uvm_fault: ufs_lookup
2022/03/08 14:46 openbsd 9f7de9371f1f 7bdd8b2c .config console log report ci-openbsd-multicore uvm_fault: ufs_lookup
2022/02/11 05:52 openbsd 4e4477fd5c2f 0b33604d .config console log report ci-openbsd-multicore uvm_fault: ufs_lookup
2022/01/24 23:14 openbsd 7f22cd74b38a 96ff84ef .config console log report ci-openbsd-multicore uvm_fault: ufs_lookup
2022/01/24 18:24 openbsd 7f22cd74b38a 96ff84ef .config console log report ci-openbsd-multicore uvm_fault: ufs_lookup
2022/01/14 08:51 openbsd a0e2ca3ce324 b8d780ab .config console log report ci-openbsd-multicore uvm_fault: ufs_lookup
* Struck through repros no longer work on HEAD.