syzbot


uvm_fault: witness_checkorder (4)

Status: auto-obsoleted due to no activity on 2024/02/21 18:24
Reported-by: syzbot+b5177d759ac9bb97fd2f@syzkaller.appspotmail.com
First crash: 239d, last: 239d
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: witness_checkorder (3) C 212 312d 565d 0/3 auto-obsoleted due to no activity on 2023/11/01 12:30
openbsd uvm_fault: witness_checkorder (2) 1 1704d 1704d 0/3 auto-closed as invalid on 2020/02/18 09:16
openbsd uvm_fault: witness_checkorder syz 2 1735d 1735d 3/3 fixed on 2019/10/22 13:03
openbsd uvm_fault: witness_checkorder (5) 4 9d01h 117d 0/3 upstream: reported on 2024/03/25 02:45

Sample crash report:
uvm_fault(0xfffffd807734fcc0, 0x8, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      witness_checkorder+0x1ec:       movl    0x8(%r14),%ebx
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*213997  19884      0        0x12        0x1    0K sshd
witness_checkorder(fffffd80692199e0,9,0) at witness_checkorder+0x1ec sys/kern/subr_witness.c:794
rw_enter(fffffd80692199d0,1) at rw_enter+0xd5 sys/kern/kern_rwlock.c:249
rwsleep(fffffd8069219b10,fffffd80692199d0,118,ffffffff82821449,0) at rwsleep+0xd6 sys/kern/kern_synch.c:303
sosend(fffffd80692199c8,0,ffff800021209038,0,0,0) at sosend+0x76b sys/kern/uipc_socket.c:623
fifo_write(ffff800021208f80) at fifo_write+0x80 sys/miscfs/fifofs/fifo_vnops.c:279
VOP_WRITE(fffffd806fd50718,ffff800021209038,3,fffffd807f7d74e0) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245
ktrwriteraw(ffff8000211e7d48,fffffd806fd50718,fffffd807f7d74e0,ffff800021209108,ffff8000212090e0) at ktrwriteraw+0x16c sys/kern/kern_ktrace.c:664
ktrgenio(ffff8000211e7d48,7,0,ffff800000db9f60,1126) at ktrgenio+0x272 ktrwrite2 sys/kern/kern_ktrace.c:626 [inline]
ktrgenio(ffff8000211e7d48,7,0,ffff800000db9f60,1126) at ktrgenio+0x272 sys/kern/kern_ktrace.c:258
dofilereadv(ffff8000211e7d48,7,ffff800021209278,0,ffff800021209360) at dofilereadv+0x2e7 sys/kern/sys_generic.c:263
sys_read(ffff8000211e7d48,ffff800021209310,ffff800021209360) at sys_read+0x87 sys/kern/sys_generic.c:167
syscall(ffff8000212093e0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff8000212093e0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f1c725afe30, count: 3
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: uvm_fault(0xfffffd807734fcc0, 0x8, 0, 1) -> e
ddb{0}> trace
witness_checkorder(fffffd80692199e0,9,0) at witness_checkorder+0x1ec sys/kern/subr_witness.c:794
rw_enter(fffffd80692199d0,1) at rw_enter+0xd5 sys/kern/kern_rwlock.c:249
rwsleep(fffffd8069219b10,fffffd80692199d0,118,ffffffff82821449,0) at rwsleep+0xd6 sys/kern/kern_synch.c:303
sosend(fffffd80692199c8,0,ffff800021209038,0,0,0) at sosend+0x76b sys/kern/uipc_socket.c:623
fifo_write(ffff800021208f80) at fifo_write+0x80 sys/miscfs/fifofs/fifo_vnops.c:279
VOP_WRITE(fffffd806fd50718,ffff800021209038,3,fffffd807f7d74e0) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245
ktrwriteraw(ffff8000211e7d48,fffffd806fd50718,fffffd807f7d74e0,ffff800021209108,ffff8000212090e0) at ktrwriteraw+0x16c sys/kern/kern_ktrace.c:664
ktrgenio(ffff8000211e7d48,7,0,ffff800000db9f60,1126) at ktrgenio+0x272 ktrwrite2 sys/kern/kern_ktrace.c:626 [inline]
ktrgenio(ffff8000211e7d48,7,0,ffff800000db9f60,1126) at ktrgenio+0x272 sys/kern/kern_ktrace.c:258
dofilereadv(ffff8000211e7d48,7,ffff800021209278,0,ffff800021209360) at dofilereadv+0x2e7 sys/kern/sys_generic.c:263
sys_read(ffff8000211e7d48,ffff800021209310,ffff800021209360) at sys_read+0x87 sys/kern/sys_generic.c:167
syscall(ffff8000212093e0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff8000212093e0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f1c725afe30, count: -12
ddb{0}> show registers
rdi                                0
rsi                          0x20000    acpi_pdirpa+0xbe63
rbp               0xffff800021208d00
rbx                              0xe
rdx                                0
rcx               0xffff8000211e7d48
rax               0xffffffff82c09ff0    cpu_info_full_primary+0x1ff0
r8                                 0
r9                                 0
r10               0xcf64cca36dbf59c0
r11               0xc2cb302f2351fd3e
r12                                0
r13               0xfffffd80692199e0
r14                                0
r15               0xffff8000211e7d48
rip               0xffffffff81cc31ac    witness_checkorder+0x1ec
cs                               0x8
rflags                       0x10246    __ALIGN_SIZE+0xf246
rsp               0xffff800021208c50
ss                              0x10
witness_checkorder+0x1ec:       movl    0x8(%r14),%ebx
ddb{0}> show proc
PROC (sshd) tid=213997 pid=19884 tcnt=1 stat=onproc
    flags process=12<EXEC,SUGID> proc=1<INKTR>
    runpri=24, usrpri=51, slppri=24, nice=20
    wchan=0x0, wmesg=, ps_single=0x0
    forw=0xffffffffffffffff, list=0xffff8000211e6560,0xffff8000211e72b8
    process=0xffff8000ffff4ca0 user=0xffff800021204000, vmspace=0xfffffd807734fcc0
    estcpu=1, cpticks=1, pctcpu=0.3, user=0, sys=1, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 75668   75902  95098      0  3        0x82  piperd        syz-executor.7
 55164  192612  95098      0  3        0x82  piperd        syz-executor.6
 12207  180375      0      0  3     0x14280  nfsidl        nfsio
 52209  340418      0      0  3     0x14280  nfsidl        nfsio
 74850  100800      0      0  3     0x14280  nfsidl        nfsio
 13150  174936      0      0  3     0x14280  nfsidl        nfsio
 82839  354656      0      0  3     0x14280  nfsidl        nfsio
 75237  258878      0      0  3     0x14280  nfsidl        nfsio
 21647  297637      0      0  3     0x14280  nfsidl        nfsio
 27510  135075      0      0  3     0x14280  nfsidl        nfsio
 43875  404460      0      0  3     0x14280  nfsidl        nfsio
 19721  374906      0      0  3     0x14280  nfsidl        nfsio
 68351   88349      0      0  3     0x14280  nfsidl        nfsio
 38563  317920      0      0  3     0x14280  nfsidl        nfsio
 29148   37979      0      0  3     0x14280  nfsidl        nfsio
 47310  122511      0      0  3     0x14280  nfsidl        nfsio
 97038   73347      0      0  3     0x14280  nfsidl        nfsio
 99774   93049      0      0  3     0x14280  nfsidl        nfsio
 69136    9203      0      0  3     0x14280  nfsidl        nfsio
   489   76017      0      0  3     0x14280  nfsidl        nfsio
   832  118163      0      0  3     0x14280  nfsidl        nfsio
 97592  402492      0      0  3     0x14280  nfsidl        nfsio
 51103  128771      0      0  3     0x14200  bored         sosplice
 26900  464507  95098      0  3        0x82  piperd        syz-executor.5
 18308  435925  95098      0  3        0x82  piperd        syz-executor.4
 68840  385030  95098      0  3        0x82  piperd        syz-executor.2
 43960  288672  95098      0  2        0x83                syz-executor.3
 13260  293329  95098      0  3        0x82  nanoslp       syz-executor.1
 32826  140656  95098      0  3        0x82  piperd        syz-executor.0
 95098  300004  54660      0  2   0x2000083                syz-fuzzer
 95098   26910  54660      0  3   0x6000082  thrsleep      syz-fuzzer
 95098  293641  54660      0  3   0x6000082  wait          syz-fuzzer
 95098  166764  54660      0  3   0x6000082  wait          syz-fuzzer
 95098   59746  54660      0  3   0x6000082  wait          syz-fuzzer
 95098  424276  54660      0  3   0x6000082  thrsleep      syz-fuzzer
 95098  199085  54660      0  3   0x6000082  thrsleep      syz-fuzzer
 95098  158265  54660      0  3   0x6000082  wait          syz-fuzzer
 95098  152006  54660      0  3   0x6000082  wait          syz-fuzzer
 95098  463039  54660      0  3   0x6000082  kqread        syz-fuzzer
 95098  223895  54660      0  3   0x6000082  thrsleep      syz-fuzzer
 95098  483723  54660      0  3   0x6000082  wait          syz-fuzzer
 95098  335791  54660      0  2   0x6000083                syz-fuzzer
 95098  482449  54660      0  3   0x6000082  wait          syz-fuzzer
 95098  240003  54660      0  3   0x6000082  thrsleep      syz-fuzzer
 95098  518859  54660      0  3   0x6000082  wait          syz-fuzzer
 54660  165932  19884      0  3    0x10008a  sigsusp       ksh
*19884  213997  69990      0  7        0x13                sshd
 49723  423158      1      0  3    0x100083  ttyin         getty
 69990  177588      1      0  3        0x88  kqread        sshd
 65020  230461  39791     74  3   0x1100092  bpf           pflogd
 39791   56377      1      0  3        0x80  netio         pflogd
 43147   36903  20184     73  3   0x1100090  kqread        syslogd
 20184   52391      1      0  3    0x100082  netio         syslogd
 93814  217295      1      0  3    0x100080  kqread        resolvd
 45062  502870  53490     77  3    0x100092  kqread        dhcpleased
 91080  233904  53490     77  3    0x100092  kqread        dhcpleased
 53490  265619      1      0  3        0x80  kqread        dhcpleased
 45505  401803      0      0  3     0x14200  bored         smr
 36676  184744      0      0  2     0x14200                zerothread
 27020  507138      0      0  3     0x14200  aiodoned      aiodoned
  6578  456961      0      0  3     0x14200  syncer        update
 63225  105545      0      0  3     0x14200  cleaner       cleaner
 60638  444182      0      0  3     0x14200  reaper        reaper
 66182  136347      0      0  3     0x14200  pgdaemon      pagedaemon
 28176   17965      0      0  3     0x14200  bored         viomb
 88420  446261      0      0  3  0x40014200  acpi0         acpi0
 40615   70533      0      0  7  0x40014200                idle1
 28545  444746      0      0  3     0x14200  bored         softnet3
 81708  320190      0      0  3     0x14200  bored         softnet2
 26553  342854      0      0  3     0x14200  bored         softnet1
 27347    9553      0      0  3     0x14200  bored         softnet0
 10477  290329      0      0  3     0x14200  bored         systqmp
 65325  271253      0      0  3     0x14200  bored         systq
 85782  167304      0      0  3     0x14200  tmoslp        softclockmp
 12189  164700      0      0  3  0x40014200  tmoslp        softclock
 66932  475383      0      0  3  0x40014200                idle0
     1  345761      0      0  3     0x80082  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{0}> show all locks
Process 19884 (sshd) thread 0xffff8000211e7d48 (213997)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d7b618)
#0  witness_lock+0x447
#1  __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
#2  mi_switch+0x46d sys/kern/sched_bsd.c:470
#3  sleep_finish+0x19b sys/kern/kern_synch.c:414
#4  rwsleep+0xab sys/kern/kern_synch.c:300
#5  sosend+0x76b sys/kern/uipc_socket.c:623
#6  fifo_write+0x80 sys/miscfs/fifofs/fifo_vnops.c:279
#7  VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245
#8  ktrwriteraw+0x16c sys/kern/kern_ktrace.c:664
#9  ktrgenio+0x272 ktrwrite2 sys/kern/kern_ktrace.c:626 [inline]
#9  ktrgenio+0x272 sys/kern/kern_ktrace.c:258
#10 dofilereadv+0x2e7 sys/kern/sys_generic.c:263
#11 sys_read+0x87 sys/kern/sys_generic.c:167
#12 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#12 syscall+0x606 sys/arch/amd64/amd64/trap.c:623
#13 Xsyscall+0x128
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10197   6494K    6899K  78643K     14611        0
            pcb    13     14K      16K  78643K       120        0
         rtable   237      7K       7K  78643K       459        0
             pf    32      9K      10K  78643K        95        0
         ifaddr    45     15K      16K  78643K        81        0
        ifgroup    55      2K       2K  78643K       143        0
         sysctl     3      0K       0K  78643K         3        0
       counters    60     35K      36K  78643K       108        0
       ioctlops     0      0K       4K  78643K      1512        0
            iov     0      0K      16K  78643K       196        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         4        0
         vnodes  1407     88K      88K  78643K      2537        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     2      1K       9K  78643K        37        0
         VM map     2      1K       1K  78643K         2        0
            sem    12      0K       0K  78643K       178        0
        dirhash    12      2K       2K  78643K        12        0
           ACPI  1697    195K     286K  78643K     12548        0
      file desc    10     33K      89K  78643K      3067        0
          sigio     0      0K       0K  78643K       317        0
           proc    69     91K     115K  78643K       712        0
        subproc   104      6K       6K  78643K       141        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
    ip_moptions     0      0K       0K  78643K       108        0
       in_multi    99      7K       7K  78643K       160        0
    ether_multi     1      0K       0K  78643K         4        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    67    307K     307K  78643K        67        0
           exec     0      0K       1K  78643K       843        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   343     92K      97K  78643K     31420        0
       UVM aobj    50      2K       2K  78643K        50        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
    ip6_options     0      0K       0K  78643K       108        0
            NDP    12      0K       1K  78643K        56        0
           temp    82   5924K    5996K  78643K     17546        0
         kqueue    12     18K      24K  78643K       169        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      135    0      132     3     2     1     3     0     8    0
rtentry    112      138    0       28     4     0     4     4     0     8    0
unpcb      144     1815    0     1800    18    12     6     6     0     8    5
syncache   312       30    0       30     7     6     1     1     0     8    1
tcpqe       32      264    0      264     7     6     1     1     0     8    1
tcpcb      808      879    0      860    31    28     3    11     0     8    1
arp        120       22    0        4     1     0     1     1     0     8    0
ipq         40        2    0        2     1     0     1     1     0     8    1
ipqe        40        6    0        6     1     0     1     1     0     8    1
inpcb      368     3826    0     3804    45    34    11    17     0     8    7
nd6        136       32    0        8     1     0     1     1     0     8    0
pkpcb       40        9    0        9     3     3     0     1     0     8    0
kcovpl      48       10    0        2     1     0     1     1     0     8    0
ppxss      1256       6    0        6     2     2     0     1     0     8    0
pffrag     232       63    0       61     1     0     1     1     0   482    0
pffrnode    88       61    0       59     1     0     1     1     0     8    0
pffrent     40      167    0      165     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      152    0      123     1     0     1     1     0     8    0
pfstkey    128      152    0      123     2     0     2     2     0     8    0
pfstate    376      152    0      123     6     0     6     6     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      561    0      102    29     0    29    29     0     8    0
art_table   32      562    0      102     4     0     4     4     0     8    0
art_node    16      134    0       34     1     0     1     1     0     8    0
semapl     112      174    0      164     1     0     1     1     0     8    0
shmpl      112       47    0        0     2     0     2     2     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256     5335    0     3876    92     0    92    92     0     8    0
ffsino     272     5335    0     3876    98     0    98    98     0     8    0
nchpl      144     9768    0     9274    63    40    23    63     0     8    0
uvmvnodes   80     6298    0        0   129     0   129   129     0     8    0
vnodes     216     6298    0        0   350     0   350   350     0     8    0
namei      1024   29882    0    29882     4     3     1     2     0     8    1
percpumem   16       67    0       24     1     0     1     1     0     8    0
vcpupl     2048      17    0        0     3     0     3     3     0     8    0
vmpool     696       17    0        0     2     0     2     2     0     8    0
kstatmem   264       72    0       48     2     0     2     2     0     8    0
scxspl     216    27102    0    27102    14    13     1     8     1     8    1
plimitpl   152      414    0      398     1     0     1     1     0     8    0
sigapl     424     3397    0     3334    10     2     8     8     0     8    0
futexpl     64    27471    0    27471     1     0     1     1     0     8    1
knotepl    120      353    0        0    11     0    11    11     0     8    0
kqueuepl   216      413    0      405     7     4     3     5     0     8    2
pipepl     320      801    0      773    23    20     3     8     0     8    0
fdescpl    496     3358    0     3335     5     0     5     5     0     8    0
filepl     152    18977    0    18739    46    29    17    19     0     8    7
lockfpl    104     1229    0     1227     5     3     2     2     0     8    1
lockfspl    48      459    0      457     1     0     1     1     0     8    0
sessionpl  144       26    0        9     1     0     1     1     0     8    0
pgrppl      48       30    0       13     1     0     1     1     0     8    0
ucredpl    104     1926    0     1914     1     0     1     1     0     8    0
zombiepl   144     3335    0     3334     2     1     1     1     0     8    0
processpl  1072    3397    0     3334     5     0     5     5     0     8    0
procpl     680     8245    0     8167    12     3     9    10     0     8    1
sosppl     168       30    0       30     3     2     1     1     0     8    1
sockpl     488     5790    0     5750    97    82    15    25     0     8    8
mcl64k     65536      7    0        0     1     0     1     1     0     8    0
mcl16k     16384      4    0        0     1     0     1     1     0     8    0
mcl12k     12288     10    0        0     1     0     1     1     0     8    0
mcl9k      9216       4    0        0     1     0     1     1     0     8    0
mcl8k      8192      17    0        0     3     0     3     3     0     8    0
mcl4k      4096      28    0        0     4     1     3     4     0     8    0
mcl2k2     2112       8    0        0     1     0     1     1     0     8    0
mcl2k      2048     285    0        0    36     0    36    36     0     8    1
mtagpl      96      249    0        0     7     0     7     7     0     8    0
mbufpl     256     1221    0        0    72     0    72    72     0     8    0
bufpl      288     7768    0     1441   453     0   453   453     0     8    0
anonpl      24   456698    0   443778   135    43    92   108     0   186    0
amapchunkpl 152   99636    0    98910    55    17    38    41     0   158    1
amappl16   200    10844    0    10433    59    36    23    35     0     8    0
amappl15   192        8    0        8     1     1     0     1     0     8    0
amappl14   184      163    0      151     2     1     1     2     0     8    0
amappl13   176       11    0       11     1     1     0     1     0     8    0
amappl12   168     4059    0     4033     4     2     2     3     0     8    0
amappl11   160       58    0       43     1     0     1     1     0     8    0
amappl10   152       33    0       23     1     0     1     1     0     8    0
amappl9    144      187    0      187     5     5     0     1     0     8    0
amappl8    136      331    0      245     4     0     4     4     0     8    0
amappl7    128      197    0      171     2     0     2     2     0     8    0
amappl6    120      315    0      306     1     0     1     1     0     8    0
amappl5    112      183    0      172     1     0     1     1     0     8    0
amappl4    104      524    0      493     2     1     1     2     0     8    0
amappl3     96    19727    0    19665     3     0     3     3     0     8    0
amappl2     88     4063    0     3992     3     1     2     3     0     8    0
amappl1     80    20211    0    19664    23    10    13    23     0     8    0
amappl      88    30770    0    30582     6     0     6     6     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       49    0        0     1     0     1     1     0     8    0
uaddrrnd    24     3376    0     3336     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     3376    0     3336     1     0     1     1     0     8    0
vmmpekpl   168    29769    0    29709     4     0     4     4     0     8    0
vmmpepl    168   214189    0   212121   169    56   113   120     0   357    4
vmsppl     464     3375    0     3336     6     0     6     6     0     8    0
rwobjpl     56    63724    0    55891   115     3   112   112     0     8    0
pdppl      4096    6759    0     6689   288   202    86    86     0     8   16
pvpl        32  1111735    0  1093529   404   235   169   366     0   265    0
pmappl     248     3375    0     3336     3     0     3     3     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112     1188    0      281    27     0    27    27     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
witness_checkorder(fffffd80692199e0,9,0) at witness_checkorder+0x1ec sys/kern/subr_witness.c:794
rw_enter(fffffd80692199d0,1) at rw_enter+0xd5 sys/kern/kern_rwlock.c:249
rwsleep(fffffd8069219b10,fffffd80692199d0,118,ffffffff82821449,0) at rwsleep+0xd6 sys/kern/kern_synch.c:303
sosend(fffffd80692199c8,0,ffff800021209038,0,0,0) at sosend+0x76b sys/kern/uipc_socket.c:623
fifo_write(ffff800021208f80) at fifo_write+0x80 sys/miscfs/fifofs/fifo_vnops.c:279
VOP_WRITE(fffffd806fd50718,ffff800021209038,3,fffffd807f7d74e0) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245
ktrwriteraw(ffff8000211e7d48,fffffd806fd50718,fffffd807f7d74e0,ffff800021209108,ffff8000212090e0) at ktrwriteraw+0x16c sys/kern/kern_ktrace.c:664
ktrgenio(ffff8000211e7d48,7,0,ffff800000db9f60,1126) at ktrgenio+0x272 ktrwrite2 sys/kern/kern_ktrace.c:626 [inline]
ktrgenio(ffff8000211e7d48,7,0,ffff800000db9f60,1126) at ktrgenio+0x272 sys/kern/kern_ktrace.c:258
dofilereadv(ffff8000211e7d48,7,ffff800021209278,0,ffff800021209360) at dofilereadv+0x2e7 sys/kern/sys_generic.c:263
sys_read(ffff8000211e7d48,ffff800021209310,ffff800021209360) at sys_read+0x87 sys/kern/sys_generic.c:167
syscall(ffff8000212093e0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff8000212093e0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f1c725afe30, count: -12
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x1e:        addq    $0x8,%rsp
x86_ipi_db(ffff800020d48ff0) 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
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020d48ff0) at sched_idle+0x41e sys/kern/kern_sched.c:191
end trace frame: 0x0, count: 10
ddb{1}> trace
x86_ipi_db(ffff800020d48ff0) 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
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020d48ff0) at sched_idle+0x41e sys/kern/kern_sched.c:191
end trace frame: 0x0, count: -5

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/11/23 18:23 openbsd 3f438978d619 5b429f39 .config console log report ci-openbsd-multicore uvm_fault: witness_checkorder
* Struck through repros no longer work on HEAD.