syzbot


uvm_fault: db_enter (4)

Status: auto-obsoleted due to no activity on 2023/08/30 12:34
Reported-by: syzbot+da8475c2e1f922c4ebd6@syzkaller.appspotmail.com
First crash: 754d, last: 412d
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: db_enter (5) 68 2d16h 310d 0/3 upstream: reported on 2023/09/11 08:12
openbsd uvm_fault: db_enter (2) 1 798d 798d 0/3 closed as invalid on 2022/05/11 17:28
openbsd uvm_fault: db_enter 43 1456d 1510d 0/3 closed as dup on 2020/05/30 07:36
openbsd uvm_fault: db_enter (3) 1 768d 768d 0/3 closed as invalid on 2022/06/11 05:12

Sample crash report:
uvm_fault(0xfffffd80694e9768, 0x8, 0, 1) -> e
kernel: page fault trapanic: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_fork.c", line 675
Stopped at      db_enter+0x1c:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*493585  89266  32767        0x10          0    1  syz-executor.1
 143739  94637  32767        0x10  0x4000000    0  syz-executor.5
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8278f924) at panic+0x17b sys/kern/subr_prf.c:198
__assert(ffffffff828117b7,ffffffff827d3c47,2a3,ffffffff827c8b74) at __assert+0x29 sys/kern/subr_prf.c:157
proc_trampoline_mp() at proc_trampoline_mp+0x135
end trace frame: 0x0, count: 11
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
*cpu0: uvm_fault(0xfffffd80694e9768, 0x8, 0, 1) -> e
 cpu1: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_fork.c", line 675
ddb{1}> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8278f924) at panic+0x17b sys/kern/subr_prf.c:198
__assert(ffffffff828117b7,ffffffff827d3c47,2a3,ffffffff827c8b74) at __assert+0x29 sys/kern/subr_prf.c:157
proc_trampoline_mp() at proc_trampoline_mp+0x135
end trace frame: 0x0, count: -4
ddb{1}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff80002129f9a0
rbx               0xffff800020d59b8f
rdx                                0
rcx                                0
rax               0xffff8000212c2860
r8                 0x101010101010101
r9                0x8080808080808080
r10               0x991f907d149b7cfb
r11                0xe7611a066adcfac
r12               0xffff800020d59990
r13                                0
r14               0xffffffff82ba2990    cpu_info_full_primary+0x2990
r15                              0x1
rip               0xffffffff822f3ddc    db_enter+0x1c
cs                               0x8
rflags                         0x246
rsp               0xffff80002129f990
ss                                 0
db_enter+0x1c:  addq    $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.1) pid=493585 stat=onproc
    flags process=10<SUGID> proc=0
    pri=86, usrpri=86, nice=20
    forw=0xffffffffffffffff, list=0xffff8000212c2b18,0xffff8000212c3608
    process=0xffff800027b4a198 user=0xffff80002129a000, vmspace=0xfffffd806bd15588
    estcpu=36, cpticks=1, pctcpu=0.0
    user=0, sys=1, intr=0
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 54685  412527  41997  32767  2        0x10                syz-executor.6
 46195   49756  58304  32767  2        0x10                syz-executor.7
*89266  493585  92841  32767  7        0x10                syz-executor.1
 94637  444096  28894  32767  2        0x10                syz-executor.5
 94637  143739  28894  32767  7   0x4000010                syz-executor.5
 94637  239531  28894  32767  2   0x4000010                syz-executor.5
 89572  454637  35892  32767  2        0x10                syz-executor.4
 89572  106804  35892  32767  3   0x4000090  fsleep        syz-executor.4
 89572    5508  35892  32767  2   0x4000010                syz-executor.4
 77048  142030  80327  32767  2        0x10                syz-executor.3
 77048  115571  80327  32767  3   0x4000090  netio         syz-executor.3
 92841  491095  14810  32767  3        0x90  nanoslp       syz-executor.1
 14810  303332  50783      0  3        0x82  wait          syz-executor.1
 41997  415035  63401  32767  2        0x10                syz-executor.6
 63401   48245  50783      0  3        0x82  wait          syz-executor.6
 35892   46268  56059  32767  3        0x90  nanoslp       syz-executor.4
 56059  274275  50783      0  3        0x82  wait          syz-executor.4
 80327  230565  57896  32767  3        0x90  nanoslp       syz-executor.3
 57896  224243  50783      0  3        0x82  wait          syz-executor.3
 58304  144577  68690  32767  2        0x10                syz-executor.7
 68690  171032  50783      0  3        0x82  wait          syz-executor.7
 20476  378161  70386  32767  2        0x10                syz-executor.2
 70386   89606  50783      0  3        0x82  wait          syz-executor.2
 28894   77462  80236  32767  3        0x90  nanoslp       syz-executor.5
 80236   25023  50783      0  3        0x82  wait          syz-executor.5
 58471  147606  91598  32767  2        0x10                syz-executor.0
 91598  100097  50783      0  3        0x82  wait          syz-executor.0
 47194   88668      0      0  3     0x14200  bored         sosplice
 50783    7194   6018      0  3        0x82  kqread        syz-fuzzer
 50783   15860   6018      0  3   0x4000082  nanoslp       syz-fuzzer
 50783   53376   6018      0  3   0x4000082  wait          syz-fuzzer
 50783  281072   6018      0  3   0x4000082  thrsleep      syz-fuzzer
 50783  411129   6018      0  3   0x4000082  thrsleep      syz-fuzzer
 50783  116784   6018      0  3   0x4000082  wait          syz-fuzzer
 50783  246362   6018      0  3   0x4000082  wait          syz-fuzzer
 50783  220725   6018      0  3   0x4000082  wait          syz-fuzzer
 50783  411306   6018      0  3   0x4000082  thrsleep      syz-fuzzer
 50783  322452   6018      0  3   0x4000082  thrsleep      syz-fuzzer
 50783  364647   6018      0  3   0x4000082  thrsleep      syz-fuzzer
 50783  428667   6018      0  3   0x4000082  wait          syz-fuzzer
 50783  422862   6018      0  3   0x4000082  wait          syz-fuzzer
 50783  274467   6018      0  3   0x4000082  wait          syz-fuzzer
 50783  328158   6018      0  3   0x4000082  wait          syz-fuzzer
 50783   92523   6018      0  3   0x4000082  thrsleep      syz-fuzzer
  6018   46378   2684      0  3    0x10008a  sigsusp       ksh
  2684  359462  39227      0  3        0x9a  kqread        sshd
  1092  227167      1      0  3    0x100083  ttyin         getty
 39227  232818      1      0  3        0x88  kqread        sshd
  4002   53229  91164     73  3   0x1100090  kqread        syslogd
 91164  252669      1      0  3    0x100082  netio         syslogd
 46993  281837      1      0  3    0x100080  kqread        resolvd
 34738  109678  59471     77  3    0x100092  kqread        dhcpleased
 63740   98086  59471     77  3    0x100092  kqread        dhcpleased
 59471  384942      1      0  3        0x80  kqread        dhcpleased
 78545  361125      0      0  3     0x14200  bored         smr
  7077   34456      0      0  2     0x14200                zerothread
 13323  112080      0      0  3     0x14200  aiodoned      aiodoned
 19250  110284      0      0  3     0x14200  syncer        update
 17188   88364      0      0  3     0x14200  cleaner       cleaner
 78421  180407      0      0  3     0x14200  reaper        reaper
 63549   49276      0      0  3     0x14200  pgdaemon      pagedaemon
 89475  515193      0      0  3     0x14200  bored         viomb
  7563  435953      0      0  3  0x40014200  acpi0         acpi0
 97189  250538      0      0  3  0x40014200                idle1
 34676  423777      0      0  3     0x14200  bored         softnet3
 97237  144913      0      0  3     0x14200  bored         softnet2
  7026  416374      0      0  3     0x14200  bored         softnet1
  4194   37469      0      0  3     0x14200  bored         softnet0
 89308  463521      0      0  3     0x14200  bored         systqmp
 36118  109815      0      0  3     0x14200  bored         systq
 21930  144498      0      0  3  0x40014200  bored         softclock
 61816  342439      0      0  3  0x40014200                idle0
     1  445121      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{1}> show all locks
Process 94637 (syz-executor.5) thread 0xffff8000212c25a8 (143739)
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82cf6d48)
#0  witness_lock+0x44d
#1  __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
#2  mi_switch+0x3c3 sys/kern/sched_bsd.c:405
#3  sleep_finish+0x184 sys/kern/kern_synch.c:417
#4  tsleep+0x12b sys/kern/kern_synch.c:155
#5  biowait+0x91 sys/kern/vfs_bio.c:1278
#6  bwrite+0x21f sys/kern/vfs_bio.c:769
#7  VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640
#8  ufs_direnter+0x90a sys/ufs/ufs/ufs_lookup.c:909
#9  ufs_makeinode+0x4cc sys/ufs/ufs/ufs_vnops.c:1855
#10 ufs_symlink+0x4b sys/ufs/ufs/ufs_vnops.c:1369
#11 VOP_SYMLINK+0xd4 sys/kern/vfs_vops.c:426
#12 dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1802
#13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80660ca1a8)
#0  witness_lock+0x44d
#1  rw_enter+0x3e5 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8f sys/kern/kern_rwlock.c:465
#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:1324
#8  ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394
#9  ufs_makeinode+0xb2 sys/ufs/ufs/ufs_vnops.c:1817
#10 ufs_symlink+0x4b sys/ufs/ufs/ufs_vnops.c:1369
#11 VOP_SYMLINK+0xd4 sys/kern/vfs_vops.c:426
#12 dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1802
#13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632
#14 Xsyscall+0x128
Process 20476 (syz-executor.2) thread 0xffff800021269350 (378161)
exclusive rrwlock inode r = 0 (0xfffffd8064310c50)
#0  witness_lock+0x44d
#1  rw_enter+0x3e5 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8f sys/kern/kern_rwlock.c:465
#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:1324
#8  ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487
#9  VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x6f5 sys/kern/vfs_lookup.c:566
#11 namei+0x55a sys/kern/vfs_lookup.c:250
#12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1848
#13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80660caa28)
#0  witness_lock+0x44d
#1  rw_enter+0x3e5 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8f sys/kern/kern_rwlock.c:465
#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  dounlinkat+0x9d sys/kern/vfs_syscalls.c:1848
#8  syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#8  syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632
#9  Xsyscall+0x128
Process 58471 (syz-executor.0) thread 0xffff8000212685b8 (147606)
exclusive rrwlock inode r = 0 (0xfffffd8076a97810)
#0  witness_lock+0x44d
#1  rw_enter+0x3e5 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8f sys/kern/kern_rwlock.c:465
#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:1353
#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:3074
#10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80661024e0)
#0  witness_lock+0x44d
#1  rw_enter+0x3e5 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8f sys/kern/kern_rwlock.c:465
#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:3059
#8  syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#8  syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632
#9  Xsyscall+0x128
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10208   6412K    6419K  78643K     11417        0
            pcb    13     12K      14K  78643K        17        0
         rtable   246      7K       7K  78643K      3229        0
         ifaddr    73     24K      25K  78643K       313        0
         sysctl     3      1K       2K  78643K         7        0
       counters    60     35K      35K  78643K       138        0
       ioctlops     0      0K       2K  78643K       456        0
            iov     0      0K      40K  78643K     19908        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         4        0
         vnodes  1279     80K      80K  78643K      7561        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     2      1K       9K  78643K       455        0
         VM map     2      1K       1K  78643K         2        0
            sem    12      0K       0K  78643K      7722        0
        dirhash    12      2K       2K  78643K        12        0
           ACPI  1697    195K     286K  78643K     12548        0
      file desc    24     89K     113K  78643K     30483        0
          sigio     0      0K       0K  78643K       503        0
           proc    56     78K     103K  78643K      3365        0
        subproc   104      6K       6K  78643K       611        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
    ip_moptions     0      0K       0K  78643K      2550        0
       in_multi    99      6K       7K  78643K       961        0
    ether_multi     1      0K       0K  78643K        97        0
            mrt     1      0K       0K  78643K         1        0
    ISOFS mount     1     32K      32K  78643K         1        0
  MSDOSFS mount     1     16K      16K  78643K         1        0
           ttys   241   1076K    1076K  78643K       241        0
           exec     0      0K       1K  78643K      5389        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   504     99K     995K  78643K    306808        0
       UVM aobj   131      4K       4K  78643K       131        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
    ip6_options     0      0K       0K  78643K       726        0
            NDP    11      0K       2K  78643K       144        0
           temp   124   5866K    5994K  78643K     75716        0
         kqueue    12     18K      28K  78643K      2054        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     4869    0     4866    59    57     2     3     0     8    1
rtentry    112      594    0      478     4     0     4     4     0     8    0
unpcb      144    26755    0    26740   230   229     1    10     0     8    0
syncache   296      218    0      218    52    52     0     1     0     8    0
tcpqe       32      141    0      141    38    38     0     1     0     8    0
tcpcb      776    12036    0    12032   304   297     7    14     0     8    6
arp        120      106    0       86     1     0     1     1     0     8    0
ipq         40       89    0       86    12    11     1     1     0     8    0
ipqe        40      561    0      558    12    11     1     1     0     8    0
inpcb      368    26497    0    26486   380   372     8    14     0     8    6
ip6q        72       10    0        9     4     3     1     1     0     8    0
ip6af       40       24    0       23     4     3     1     1     0     8    0
nd6        136      185    0      157     3     2     1     2     0     8    0
kcovpl      48       47    0       39     1     0     1     1     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256     2385    0     1903    38     7    31    31     0     8    0
art_table   32     2386    0     1903     4     0     4     4     0     8    0
art_node    16      593    0      487     1     0     1     1     0     8    0
sysvmsgpl   40        5    0        4     1     0     1     1     0     8    0
semapl     112     7720    0     7710     1     0     1     1     0     8    0
shmpl      112      128    0        0     4     0     4     4     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256    47940    0    46441    95     0    95    95     0     8    0
ffsino     272    47940    0    46441   101     0   101   101     0     8    0
nchpl      144    94196    0    92554    63     0    63    63     0     8    0
uvmvnodes   80     6339    0        0   130     0   130   130     0     8    0
vnodes     216     6339    0        0   353     0   353   353     0     8    0
namei      1024  318942    0   318938    20    19     1     2     0     8    0
percpumem   16       82    0       39     1     0     1     1     0     8    0
kstatmem   264      100    0       78     2     0     2     2     0     8    0
scxspl     216   277208    0   277208    90    88     2     8     0     8    2
plimitpl   152     5165    0     5142    48    47     1     2     0     8    0
sigapl     424    30694    0    30641     8     1     7     7     0     8    0
futexpl     64   295964    0   295963    12    11     1     1     0     8    0
knotepl    120     1188    0        0     9     0     9     9     0     8    0
kqueuepl   216     8260    0     8251   140   135     5     7     0     8    4
pipepl     320     8468    0     8440   196   193     3    13     0     8    0
fdescpl    496    30676    0    30641     7     2     5     6     0     8    0
filepl     152   233236    0   232996   353   338    15    23     0     8    5
lockfpl    104    18977    0    18975    44    41     3     3     0     8    2
lockfspl    48     4156    0     4154     1     0     1     1     0     8    0
sessionpl  144       62    0       46     1     0     1     1     0     8    0
pgrppl      48     6224    0     6208     1     0     1     1     0     8    0
ucredpl    104    35253    0    35235     1     0     1     1     0     8    0
zombiepl   144    30641    0    30641     2     1     1     1     0     8    1
processpl  1072   30694    0    30641     4     0     4     4     0     8    0
procpl     696    86660    0    86587    47    39     8     9     0     8    0
srpgc       96        1    0        1     1     1     0     1     0     8    0
sosppl     168      867    0      867    52    51     1     1     0     8    1
sockpl     488    59457    0    59432  1133  1122    11    47     0     8    7
mcl64k     65536     33    0        0     5     2     3     3     0     8    0
mcl16k     16384     41    0        0     4     1     3     3     0     8    0
mcl12k     12288     41    0        0     2     0     2     2     0     8    0
mcl9k      9216      25    0        0     2     0     2     2     0     8    0
mcl8k      8192      74    0        0     7     4     3     3     0     8    0
mcl4k      4096      41    0        0     3     0     3     3     0     8    0
mcl2k2     2112      14    0        0     1     0     1     1     0     8    0
mcl2k      2048     674    0        0    55    43    12    55     0     8    0
mtagpl      96       10    0        0     1     0     1     1     0     8    0
mbufpl     256     3841    0        0   227     0   227   227     0     8    0
bufpl      288    54092    0    47753   454     0   454   454     0     8    0
anonpl      24  3163372    0  3149964   307   198   109   119     0   186    0
amapchunkpl 152 1968997    0  1968074 11393 11294    99  4430     0   158   58
amappl16   200    69296    0    68968   327   306    21    33     0     8    0
amappl15   192       16    0       16     3     3     0     1     0     8    0
amappl14   184      308    0      294     2     1     1     2     0     8    0
amappl13   176       27    0       27     5     5     0     1     0     8    0
amappl12   168    31871    0    31835     2     0     2     2     0     8    0
amappl11   160       51    0       41     1     0     1     1     0     8    0
amappl10   152       66    0       57     2     1     1     1     0     8    0
amappl9    144      447    0      447    60    59     1     2     0     8    1
amappl8    136     1313    0     1081     9     0     9     9     0     8    0
amappl7    128      276    0      255     1     0     1     1     0     8    0
amappl6    120      843    0      817     2     1     1     2     0     8    0
amappl5    112      836    0      830     1     0     1     1     0     8    0
amappl4    104     1844    0     1803     2     0     2     2     0     8    0
amappl3     96   187904    0   187815    35    31     4     4     0     8    1
amappl2     88    32915    0    32836     4     2     2     3     0     8    0
amappl1     80   116966    0   116445    22    10    12    22     0     8    0
amappl      88   301851    0   301582     8     0     8     8     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      130    0        0     3     0     3     3     0     8    0
uaddrrnd    24    30676    0    30641     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24    30676    0    30641     1     0     1     1     0     8    0
vmmpekpl   168   241728    0   241666     4     0     4     4     0     8    0
vmmpepl    168  1816682    0  1814060   407   279   128   136     0   357    0
vmsppl     464    30675    0    30641     7     2     5     6     0     8    0
rwobjpl     56   446772    0   438782   148    34   114   116     0     8    0
pdppl      4096   61360    0    61282   948   866    82    90     0     8    4
pvpl        32  8857109    0  8837473   917   728   189   357     0   265    0
pmappl     248    30675    0    30641     4     1     3     3     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112     2344    0     1316    31     0    31    31     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x1e:        addq    $0x8,%rsp
x86_ipi_db(ffffffff82ba1ff0) 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+0x23
__mp_lock(ffffffff82cf6b40) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82cf6b40) at __mp_lock+0x122 sys/kern/kern_lock.c:147
intr_handler(ffff80002e45ae60,ffff800000069c00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f
__mp_lock(ffffffff82cf6b40) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82cf6b40) at __mp_lock+0x122 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x23
cnputc(61) at cnputc+0x4f sys/dev/cons.c:218
db_putchar(61) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x6bc sys/kern/subr_prf.c:724
db_printf(ffffffff827ae017) at db_printf+0x89 sys/kern/subr_prf.c:498
db_ktrap(6,0,ffff80002e45b320) at db_ktrap+0x12c sys/arch/amd64/amd64/db_interface.c:128
end trace frame: 0xffff80002e45b310, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff82ba1ff0) 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+0x23
__mp_lock(ffffffff82cf6b40) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82cf6b40) at __mp_lock+0x122 sys/kern/kern_lock.c:147
intr_handler(ffff80002e45ae60,ffff800000069c00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f
__mp_lock(ffffffff82cf6b40) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82cf6b40) at __mp_lock+0x122 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x23
cnputc(61) at cnputc+0x4f sys/dev/cons.c:218
db_putchar(61) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x6bc sys/kern/subr_prf.c:724
db_printf(ffffffff827ae017) at db_printf+0x89 sys/kern/subr_prf.c:498
db_ktrap(6,0,ffff80002e45b320) at db_ktrap+0x12c sys/arch/amd64/amd64/db_interface.c:128
kerntrap(ffff80002e45b320) at kerntrap+0x143 sys/arch/amd64/amd64/trap.c:332
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
fifo_write(ffff80002e45b420) at fifo_write+0x52 sys/miscfs/fifofs/fifo_vnops.c:269
VOP_WRITE(fffffd806bd6ec28,ffff80002e45b4b8,8,fffffd807f7d63a8) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245
vn_rdwr(1,fffffd806bd6ec28,ffff8000211d8800,102,0,1,b0812e7d5cab5c98,ffff80002e45b5e0,fffffd806bd6ec28,78) at vn_rdwr+0xed sys/kern/vfs_vnops.c:324
ufs_symlink(ffff80002e45b5e0) at ufs_symlink+0x12d sys/ufs/ufs/ufs_vnops.c:1385
VOP_SYMLINK(fffffd8072980000,ffff80002e45b760,ffff80002e45b790,ffff80002e45b690,ffff8000211d8800) at VOP_SYMLINK+0xd4 sys/kern/vfs_vops.c:426
dosymlinkat(ffff8000212c25a8,20000000,ffffff9c,20000140) at dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1802
syscall(ffff80002e45b910) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff80002e45b910) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4b20f9785f0, count: -24
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x1c:  addq    $0x8,%rsp
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8278f924) at panic+0x17b sys/kern/subr_prf.c:198
__assert(ffffffff828117b7,ffffffff827d3c47,2a3,ffffffff827c8b74) at __assert+0x29 sys/kern/subr_prf.c:157
proc_trampoline_mp() at proc_trampoline_mp+0x135
end trace frame: 0x0, count: 11
ddb{1}> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8278f924) at panic+0x17b sys/kern/subr_prf.c:198
__assert(ffffffff828117b7,ffffffff827d3c47,2a3,ffffffff827c8b74) at __assert+0x29 sys/kern/subr_prf.c:157
proc_trampoline_mp() at proc_trampoline_mp+0x135
end trace frame: 0x0, count: -4

Crashes (30):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/06/01 12:34 openbsd 65e6af52a531 babc4389 .config console log report ci-openbsd-setuid uvm_fault: db_enter
2023/04/22 15:47 openbsd 1e5b016c5082 2b32bd34 .config console log report ci-openbsd-multicore uvm_fault: db_enter
2023/04/10 03:18 openbsd 1e5b016c5082 71147e29 .config console log report ci-openbsd-multicore uvm_fault: db_enter
2023/03/28 05:18 openbsd 1e5b016c5082 47f3aaf1 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2023/03/07 11:47 openbsd 1e5b016c5082 ffaa5c55 .config console log report ci-openbsd-multicore uvm_fault: db_enter
2023/03/02 22:00 openbsd 1e5b016c5082 f8902b57 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2023/02/23 20:41 openbsd 1e5b016c5082 4359978e .config console log report ci-openbsd-multicore uvm_fault: db_enter
2023/02/08 20:19 openbsd fb0cc54d97df fc9c934e .config console log report ci-openbsd-multicore uvm_fault: db_enter
2023/02/08 18:18 openbsd fb0cc54d97df fc9c934e .config console log report ci-openbsd-multicore uvm_fault: db_enter
2023/02/06 13:24 openbsd 6c1aad9dfe4c 0a9c11b6 .config console log report ci-openbsd-multicore uvm_fault: db_enter
2023/02/03 04:48 openbsd a9dd6dd9c022 33fc5c09 .config console log report ci-openbsd-multicore uvm_fault: db_enter
2023/02/02 09:27 openbsd 026480396ae3 16d19e30 .config console log report ci-openbsd-multicore uvm_fault: db_enter
2023/01/29 11:51 openbsd 7173161c5823 b68fb8d6 .config console log report ci-openbsd-multicore uvm_fault: db_enter
2023/01/11 10:27 openbsd 86a45bbd35a5 48bc529a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2023/01/09 12:55 openbsd 86a45bbd35a5 1dac8c7a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2023/01/07 00:16 openbsd 86a45bbd35a5 1dac8c7a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2023/01/06 03:46 openbsd 86a45bbd35a5 1dac8c7a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2023/01/05 01:01 openbsd 86a45bbd35a5 1dac8c7a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2023/01/03 22:35 openbsd 86a45bbd35a5 1dac8c7a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2022/12/22 12:29 openbsd 6a5148d0c915 c692fab1 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2022/11/25 19:49 openbsd 69f07918e001 75740b3f .config console log report ci-openbsd-multicore uvm_fault: db_enter
2022/10/27 02:57 openbsd ddb514ca016c 86777b7f .config console log report ci-openbsd-multicore uvm_fault: db_enter
2022/10/20 15:20 openbsd d5241874c244 b31320fc .config console log report ci-openbsd-multicore uvm_fault: db_enter
2022/09/12 04:40 openbsd a7bd9199e024 356d8217 .config console log report ci-openbsd-multicore uvm_fault: db_enter
2022/09/04 03:42 openbsd c3a3d6092d41 28811d0a .config console log report ci-openbsd-multicore uvm_fault: db_enter
2022/08/27 19:37 openbsd 475112fd38b6 07177916 .config console log report ci-openbsd-multicore uvm_fault: db_enter
2022/08/27 17:49 openbsd 475112fd38b6 07177916 .config console log report ci-openbsd-multicore uvm_fault: db_enter
2022/08/10 02:44 openbsd 9170c2da45e8 c2a623d6 .config console log report ci-openbsd-multicore uvm_fault: db_enter
2022/08/04 06:56 openbsd 7400b1070705 1c9013ac .config console log report ci-openbsd-multicore uvm_fault: db_enter
2022/06/24 13:38 openbsd 7aef5fd99b1d a5dbd430 .config console log report ci-openbsd-multicore uvm_fault: db_enter
* Struck through repros no longer work on HEAD.