syzbot


uvm_fault: proc_trampoline (2)

Status: upstream: reported on 2025/02/06 12:48
Reported-by: syzbot+6d88abc44e13bdeba3d5@syzkaller.appspotmail.com
First crash: 342d, last: 8h00m
Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: proc_trampoline -1 6 475d 647d 0/3 auto-obsoleted due to no activity on 2024/12/25 08:30

Sample crash report:
uvm_fault(0xfffffd806eae73e0, 0x0, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff8129cac8 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003c444b50
gsbase 0xffffffff8389cff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff8129cac8
Starting stack trace...
panic(ffffffff833e0381) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80003c444aa0) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dt_ioctl_record_stop(ffff80000158d000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593
dtclose(11e5f,2,2000,ffff80003c426560) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(11e5f,2,2000,ffff80003c426560) at dtclose+0x109 sys/dev/dt/dt_dev.c:239
spec_close(ffff80003c444c50) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd806669ebf0,2,fffffd80097fd680,ffff80003c426560) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806d688b90,ffff80003c426560) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806d688b90,ffff80003c426560) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd806d688b90,ffff80003c426560) at fdrop+0x121 sys/kern/kern_descrip.c:1280
closef(fffffd806d688b90,ffff80003c426560) at closef+0x192 sys/kern/kern_descrip.c:1264
fdfree(ffff80003c426560) at fdfree+0x116 sys/kern/kern_descrip.c:1195
exit1(ffff80003c426560,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff80003c426560,ffff80003c444fc0,ffff80003c444f10) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003c444fc0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c444fc0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x771261b5a8d0, count: 242
End of stack trace.
W
AduNG : to L vOT, 1LOWotEposN TRe
 EXIT a 0
Stopped at      proc_trampoline+0xc7:   movl    $0,%gs:0x688
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*474676  51131      0   0x1000000          0    1  syz-executor
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x7ab4b2b05390, count: 14
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(0xfffffd806eae73e0, 0x0, 0, 1) -> e
ddb{1}> trace
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x7ab4b2b05390, count: -1
ddb{1}> show registers
rdi                                0
rsi                                0
rbp               0xffff8000393e6a50
rbx                                0
rdx                                0
rcx               0xffff80002a261a08
rax                             0x2a
r8                0xffff8000393e6980
r9                               0x1
r10               0xbe8481fd58bc8252
r11               0x9566f35bd0bc3d6f
r12                                0
r13               0xffffffff81edebf8    Xdoreti+0x18
r14                                0
r15                                0
rip               0xffffffff826974c7    proc_trampoline+0xc7
cs                               0x8
rflags                         0x246
rsp               0xffff8000393e69d0
ss                                 0
proc_trampoline+0xc7:   movl    $0,%gs:0x688
ddb{1}> show proc
PROC (syz-executor) tid=474676 pid=51131 tcnt=3 stat=onproc
    flags process=1000000<CHROOT> proc=0
    runpri=83, usrpri=83, slppri=17, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff80002a260d10,0xffff80002a261250
    process=0xffff8000fffeeb68 user=0xffff8000393e1000, vmspace=0xfffffd806c7295d0
    estcpu=33, cpticks=6, pctcpu=0.6, user=5, sys=1, intr=0
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 49976  413443  82730      0  2           0                syz-executor
 49976   79717  82730      0  3   0x4000080  fsleep        syz-executor
 51017  387400   4419      0  2           0                syz-executor
 51017  221186   4419      0  3   0x4000080  fsleep        syz-executor
*51131  474676  93856      0  7   0x1000000                syz-executor
 51131   49785  93856      0  3   0x5000080  fsleep        syz-executor
 51131  443467  93856      0  3   0x5000080  fsleep        syz-executor
 68913  425539  59882     -1  2       0xc90                syz-executor
 68913  492667  59882     -1  3   0x4000090  fifor         syz-executor
 68913  177098  59882     -1  3   0x4000090  fsleep        syz-executor
 83395  131051  53519      0  2       0xc80                syz-executor
 83395  312517  53519      0  3   0x4000080  fsleep        syz-executor
 83395   50132  53519      0  3   0x4000080  kqread        syz-executor
 42934  407783  93183      0  2           0                syz-executor
 42934  461199  93183      0  2   0x4000000                syz-executor
 42934  257682  93183      0  3   0x4000000  vmmaplk       syz-executor
 42934  391460  93183      0  3   0x4000000  vmmaplk       syz-executor
 42934  349007  93183      0  3   0x4000000  vmmaplk       syz-executor
 48577  138121      1      0  3        0x80  nanoslp       init
 93183  463657  26054      0  2       0xc82                syz-executor
 82730  483851  26054      0  2       0xc82                syz-executor
 59882  229329  26054      0  2       0xc82                syz-executor
  4419  349130  26054      0  2       0xc82                syz-executor
 86876  201796  26054      0  3        0x82  wait          syz-executor
 63040  100358  26054      0  2       0xc82                syz-executor
 93856  247395  26054      0  2       0xc82                syz-executor
 53519  502916  26054      0  2       0xc82                syz-executor
 26054  310600  89161      0  3        0x82  kqread        syz-executor
 89161  319508  13072      0  3    0x10008a  sigsusp       ksh
 13072  301087  93395      0  3        0x98  kqread        sshd-session
 93395  453772  47330      0  3        0x92  kqread        sshd-session
 47330  398978      1      0  3        0x88  kqread        sshd
 33314  358661  62382     74  3   0x1100092  bpf           pflogd
 62382  416709      1      0  3        0x80  sbwait        pflogd
  2441   58163   7277     73  3   0x1100090  kqread        syslogd
  7277  426851      1      0  3    0x100082  sbwait        syslogd
 52279  444995      1      0  3    0x100080  kqread        resolvd
 56259  137169  12407     77  3    0x100092  kqread        dhcpleased
 39861  458295  12407     77  3    0x100092  kqread        dhcpleased
 12407   44952      1      0  3        0x80  kqread        dhcpleased
 77012  254070      0      0  2  0x40014200                smr
 39544  213391      0      0  2     0x14200                zerothread
 87561  490337      0      0  3     0x14200  aiodoned      aiodoned
 27192  299459      0      0  3     0x14200  syncer        update
 97729  170544      0      0  3     0x14200  cleaner       cleaner
 43265    6375      0      0  2     0x14200                reaper
 85686  139385      0      0  3     0x14200  pgdaemon      pagedaemon
 84499  125086      0      0  3     0x14200  bored         viomb
 36295  291489      0      0  3  0x40014200  acpi0         acpi0
  7364  421312      0      0  3  0x40014200                idle1
 89092  462938      0      0  3     0x14200  bored         softnet1
 16063    7927      0      0  2     0x14200                softnet0
 66751  104552      0      0  3     0x14200  bored         systqmp
  5487  298238      0      0  3     0x14200  bored         systq
 16670  476117      0      0  3     0x14200  tmoslp        softclockmp
 97902  288051      0      0  3  0x40014200  tmoslp        softclock
 40702  235783      0      0  3  0x40014200                idle0
     1  399053      0      0  3        0x82  wait          init
     0       0     -1      0  3  0x10010200  scheduler     swapper
ddb{1}> show all locks
CPU 1:
exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806c522810)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2  pmap_write_protect+0x80 rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline]
#2  pmap_write_protect+0x80 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline]
#2  pmap_write_protect+0x80 sys/arch/amd64/amd64/pmap.c:2163
#3  uvm_map_protect+0xb95 pmap_protect sys/arch/amd64/compile/SYZKALLER/obj/machine/pmap.h:476 [inline]
#3  uvm_map_protect+0xb95 sys/uvm/uvm_map.c:3196
#4  sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590
#5  syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5  syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
#6  Xsyscall+0x128
Process 49976 (syz-executor) thread 0xffff80002a2614d8 (413443)
exclusive rwlock uobjlk r = 0 (0xfffffd806c739478)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  uvm_map_protect+0xb36 sys/uvm/uvm_map.c:3196
#3  sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590
#4  syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#4  syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
#5  Xsyscall+0x128
exclusive rwlock vmmaplk r = 0 (0xfffffd806c729300)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5165
#3  uvm_map_protect+0xe0 sys/uvm/uvm_map.c:3069
#4  sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590
#5  syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5  syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
#6  Xsyscall+0x128
Process 42934 (syz-executor) thread 0xffff80003c427258 (461199)
exclusive rwlock vmmaplk r = 0 (0xfffffd806c729aa0)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413
#2  uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880
#3  uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693
#4  uvm_fault+0x106 sys/uvm/uvm_fault.c:627
#5  kpageflttrap+0x2f4 sys/arch/amd64/amd64/trap.c:283
#6  kerntrap+0x19c sys/arch/amd64/amd64/trap.c:520
#7  alltraps_kern_meltdown+0x7b
#8  copyout+0x64
#9  mmrw+0x3d6 sys/arch/amd64/amd64/mem.c:-1
#10 spec_read+0x14b sys/kern/spec_vnops.c:215
#11 VOP_READ+0x101 sys/kern/vfs_vops.c:227
#12 vn_read+0x17b sys/kern/vfs_vnops.c:369
#13 dofilereadv+0x25a sys/kern/sys_generic.c:252
#14 sys_preadv+0xe3 sys/kern/vfs_syscalls.c:3336
#15 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#15 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
#16 Xsyscall+0x128
Process 43265 (reaper) thread 0xffff8000ffffd9f8 (6375)
exclusive rwlock kmmaplk r = 0 (0xffffffff83928630)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5165
#3  uvm_unmap+0x7d sys/uvm/uvm_map.c:1792
#4  km_free+0x87 sys/uvm/uvm_km.c:714
#5  uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304
#6  reaper+0x1ca sys/kern/kern_exit.c:493
#7  proc_trampoline+0x10
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 11109  12195K   12767K 166960K     12874        0
            pcb    17     16K      18K 166960K       197        0
         rtable   199      8K      10K 166960K       554        0
             pf    33     17K      19K 166960K        94        0
         ifaddr    32      5K       8K 166960K        82        0
        ifgroup    51      2K       2K 166960K       135        0
         sysctl     4      1K       9K 166960K        12        0
       counters    68     36K      37K 166960K       140        0
       ioctlops     0      0K       4K 166960K      1580        0
            iov     1      2K      24K 166960K        71        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1459     92K      92K 166960K      1954        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     3      5K       9K 166960K        13        0
         VM map     2      1K       1K 166960K         2        0
            sem    12      0K       0K 166960K       104        0
        dirhash    12      2K       2K 166960K        15        0
           ACPI  1692    195K     286K 166960K     12470        0
      file desc    18     65K      97K 166960K       691        0
          sigio     0      0K       0K 166960K         9        0
           proc    64     99K     180K 166960K       590        0
        subproc    72      4K       4K 166960K        72        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     0      0K       0K 166960K       111        0
       in_multi    65      4K       7K 166960K       137        0
    ether_multi     1      0K       0K 166960K         9        0
            mrt     1      0K       0K 166960K         6        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys   103    466K     466K 166960K       103        0
           exec     0      0K       1K 166960K       442        0
   fusefs mount     1     32K      32K 166960K         1        0
            tdb     3      0K       0K 166960K         3        0
        VM swap     8     62K      64K 166960K        10        0
       UVM amap   263    156K     174K 166960K      8485        0
       UVM aobj    21     10K      12K 166960K        26        0
     pinsyscall    42     84K     108K 166960K      1825        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K        38        0
            NDP    11      0K       1K 166960K        51        0
           temp    53   8674K    8800K 166960K     31717        0
         kqueue    15     24K      28K 166960K       133        0
      SYN cache     2     16K      16K 166960K         2        0
ddb{1}> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache    128       26    0        0     1     0     1     1     0     8    0
rtpcb      120       84    0       79     1     0     1     1     0     8    0
rtentry    176      165    0       86     6     0     6     6     0     8    0
unpcb      144      411    0      391     5     3     2     4     0     8    1
syncache   336        5    0        5     3     2     1     1     0     8    1
tcpqe       32        3    0        3     2     1     1     1     0     8    1
tcpcb      736      188    0      179     7     0     7     7     0     8    6
arp        136       24    0       11     1     0     1     1     0     8    0
inpcb      328      895    0      881    24    11    13    13     0     8   10
nd6        152       27    0       10     1     0     1     1     0     8    0
pkpcb       40        3    0        3     2     2     0     1     0     8    0
kcovpl      48        8    0        0     1     0     1     1     0     8    0
ppxss      1192      23    0       23     2     1     1     1     0     8    1
pppxif     1504       8    0        8     2     1     1     1     0     8    1
pffrag     232       37    0       32     1     0     1     1     0   482    0
pffrnode    88       37    0       32     1     0     1     1     0     8    0
pffrent     40       74    0       68     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
pfstkey    128        2    0        2     1     1     0     1     0     8    0
pfstate    448        1    0        1     1     1     0     1     0     8    0
rttmr      136        2    0        2     2     2     0     1     0     8    0
art_heap8  4096       3    0        0     3     0     3     3     0     8    0
art_heap4  256      539    0      204    30     2    28    29     0     8    2
art_table   40      542    0      204     5     0     5     5     0     8    0
art_node    32      165    0       94     1     0     1     1     0     8    0
sysvmsgpl   40        4    0        3     1     0     1     1     0     8    0
semupl     112        2    0        2     2     2     0     1     0     8    0
semapl     112       99    0       89     1     0     1     1     0     8    0
shmpl      112       19    0        3     1     0     1     1     0     8    0
dirhash    1024      19    0        2     3     0     3     3     0     8    0
dino2pl    256     2668    0     1165    96     0    96    96     0     8    0
ffsino     296     2668    0     1165   117     0   117   117     0     8    0
nchpl      144     3750    0     2043    64     0    64    64     0     8    0
rtmask      32        3    0        3     2     2     0     1     0     8    0
vnodes     216     3118    0        0   174     0   174   174     0     8    0
namei      1024   12356    0    12356     3     2     1     2     0     8    1
percpumem   16       85    0       36     1     0     1     1     0     8    0
vcpupl     3968       2    0        0     1     0     1     1     0     8    0
vmpool     848        4    0        2     1     0     1     1     0     8    0
kstatmem   264       74    0       48     4     1     3     3     0     8    1
scsiplug    72        1    0        1     1     1     0     1     0     8    0
scxspl     216    23737    0    23737    10     9     1     8     1     8    1
plimitpl   152      240    0      223     1     0     1     1     0     8    0
sigapl     424     1024    0      976     8     0     8     8     0     8    1
knotepl    120      525    0        0    16     0    16    16     0     8    0
kqueuepl   224      237    0      226     3     0     3     3     0     8    2
pipepl     344      169    0      142     3     0     3     3     0     8    0
fdescpl    528      986    0      954     3     0     3     3     0     8    0
filepl     160     6034    0     5773    20     5    15    15     0     8    3
lockfpl    104      221    0      217     1     0     1     1     0     8    0
lockfspl    48       95    0       91     1     0     1     1     0     8    0
sessionpl  144       24    0       16     1     0     1     1     0     8    0
pgrppl      48       37    0       21     1     0     1     1     0     8    0
ucredpl    104      748    0      734     1     0     1     1     0     8    0
zombiepl   144     1201    0     1199     1     0     1     1     0     8    0
processpl  1232    1024    0      976     6     0     6     6     0     8    1
procpl     664     2061    0     1999     8     0     8     8     0     8    1
sosppl     176        1    0        1     1     0     1     1     0     8    1
sockpl     752     1478    0     1439    31    14    17    17     0     8   12
mcl64k     65536      4    0        0     1     0     1     1     0     8    0
mcl16k     16384      2    0        0     1     0     1     1     0     8    0
mcl12k     12288      1    0        0     1     0     1     1     0     8    0
mcl8k      8192       2    0        0     1     0     1     1     0     8    0
mcl4k      4096     128    0        0    16     0    16    16     0     8    0
mcl2k      2048      30    0        0     4     0     4     4     0     8    0
mtagpl      96        4    0        0     1     0     1     1     0     8    0
mbufpl     256      250    0        0    16     0    16    16     0     8    0
bufpl      280     9663    0     3527   439     0   439   439     0     8    0
anonpl      32    12397    0        0   100     0   100   100     0   246    0
amapchunkpl 152   27917    0    27311    36     6    30    32     0   158    5
amappl16   200     4085    0     3954    38    25    13    26     0     8    6
amappl15   192        6    0        6     1     1     0     1     0     8    0
amappl14   184       14    0       14     2     2     0     1     0     8    0
amappl13   176      425    0      423     1     0     1     1     0     8    0
amappl12   168     1356    0     1315     3     0     3     3     0     8    0
amappl11   160        6    0        5     2     1     1     1     0     8    0
amappl10   152       47    0       33     1     0     1     1     0     8    0
amappl9    144      256    0      255     1     0     1     1     0     8    0
amappl8    136       31    0       28     1     0     1     1     0     8    0
amappl7    128       78    0       77     1     0     1     1     0     8    0
amappl6    120      293    0      279     1     0     1     1     0     8    0
amappl5    112       76    0       66     1     0     1     1     0     8    0
amappl4    104      428    0      399     1     0     1     1     0     8    0
amappl3     96     4648    0     4544     4     1     3     3     0     8    0
amappl2     88     1117    0     1042     2     0     2     2     0     8    0
amappl1     80    11522    0    10959    16     2    14    15     0     8    0
amappl      88     7627    0     7438     5     0     5     5     0    92    0
uvmvnodes   80      126    0        0     3     0     3     3     0     8    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        7    0        7     2     2     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       25    0        5     1     0     1     1     0     8    0
uaddrrnd    24      986    0      954     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24      986    0      954     1     0     1     1     0     8    0
vmmpekpl   168     9780    0     9741     3     0     3     3     0     8    0
vmmpepl    168    69765    0    67710   112     8   104   106     0   357   11
vmsppl     488      985    0      954     5     1     4     5     0     8    0
rwobjpl     80    22006    0    20845    33     1    32    32     0     8    1
pdppl      4096    1987    0     1914   106    33    73    87     0     8    0
pvpl        32    19993    0        0   162     0   162   162     0   265    0
pmappl     256      989    0      956     3     0     3     3     0     8    0
extentpl    40       45    0       27     1     0     1     1     0     8    0
phpool     112      298    0       43     8     0     8     8     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
x86_ipi_db(ffffffff8389cff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff838b91c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff838b91c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173
scsi_xs_get(ffff8000002a4100,103) at scsi_xs_get+0x15f scsi_iopool_get sys/scsi/scsi_base.c:260 [inline]
scsi_xs_get(ffff8000002a4100,103) at scsi_xs_get+0x15f sys/scsi/scsi_base.c:655
sdactivate(ffff8000002a2c00,6) at sdactivate+0x268 sd_flush sys/scsi/sd.c:-1 [inline]
sdactivate(ffff8000002a2c00,6) at sdactivate+0x268 sys/scsi/sd.c:271
config_suspend(ffff8000002a2c00,6) at config_suspend+0x62 sys/kern/subr_autoconf.c:834
scsibusactivate(ffff8000002a3500,6) at scsibusactivate+0xab scsi_activate_link sys/scsi/scsiconf.c:410 [inline]
scsibusactivate(ffff8000002a3500,6) at scsibusactivate+0xab scsi_activate_bus sys/scsi/scsiconf.c:360 [inline]
scsibusactivate(ffff8000002a3500,6) at scsibusactivate+0xab sys/scsi/scsiconf.c:259
config_activate_children(ffff8000000a4000,6) at config_activate_children+0x1a1 config_suspend sys/kern/subr_autoconf.c:834 [inline]
config_activate_children(ffff8000000a4000,6) at config_activate_children+0x1a1 sys/kern/subr_autoconf.c:896
config_activate_children(ffff800000025a00,6) at config_activate_children+0x1c5 config_suspend sys/kern/subr_autoconf.c:-1 [inline]
config_activate_children(ffff800000025a00,6) at config_activate_children+0x1c5 sys/kern/subr_autoconf.c:896
config_activate_children(ffff80000002ce00,6) at config_activate_children+0x1c5 config_suspend sys/kern/subr_autoconf.c:-1 [inline]
config_activate_children(ffff80000002ce00,6) at config_activate_children+0x1c5 sys/kern/subr_autoconf.c:896
pciactivate(ffff80000002ce00,6) at pciactivate+0xd8 sys/dev/pci/pci.c:230
config_activate_children(ffff80000002f080,6) at config_activate_children+0x1a1 config_suspend sys/kern/subr_autoconf.c:834 [inline]
config_activate_children(ffff80000002f080,6) at config_activate_children+0x1a1 sys/kern/subr_autoconf.c:896
config_suspend_all(6) at config_suspend_all+0x49a config_suspend sys/kern/subr_autoconf.c:-1 [inline]
config_suspend_all(6) at config_suspend_all+0x49a sys/kern/subr_autoconf.c:858
end trace frame: 0xffff80003c444970, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff8389cff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff838b91c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff838b91c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173
scsi_xs_get(ffff8000002a4100,103) at scsi_xs_get+0x15f scsi_iopool_get sys/scsi/scsi_base.c:260 [inline]
scsi_xs_get(ffff8000002a4100,103) at scsi_xs_get+0x15f sys/scsi/scsi_base.c:655
sdactivate(ffff8000002a2c00,6) at sdactivate+0x268 sd_flush sys/scsi/sd.c:-1 [inline]
sdactivate(ffff8000002a2c00,6) at sdactivate+0x268 sys/scsi/sd.c:271
config_suspend(ffff8000002a2c00,6) at config_suspend+0x62 sys/kern/subr_autoconf.c:834
scsibusactivate(ffff8000002a3500,6) at scsibusactivate+0xab scsi_activate_link sys/scsi/scsiconf.c:410 [inline]
scsibusactivate(ffff8000002a3500,6) at scsibusactivate+0xab scsi_activate_bus sys/scsi/scsiconf.c:360 [inline]
scsibusactivate(ffff8000002a3500,6) at scsibusactivate+0xab sys/scsi/scsiconf.c:259
config_activate_children(ffff8000000a4000,6) at config_activate_children+0x1a1 config_suspend sys/kern/subr_autoconf.c:834 [inline]
config_activate_children(ffff8000000a4000,6) at config_activate_children+0x1a1 sys/kern/subr_autoconf.c:896
config_activate_children(ffff800000025a00,6) at config_activate_children+0x1c5 config_suspend sys/kern/subr_autoconf.c:-1 [inline]
config_activate_children(ffff800000025a00,6) at config_activate_children+0x1c5 sys/kern/subr_autoconf.c:896
config_activate_children(ffff80000002ce00,6) at config_activate_children+0x1c5 config_suspend sys/kern/subr_autoconf.c:-1 [inline]
config_activate_children(ffff80000002ce00,6) at config_activate_children+0x1c5 sys/kern/subr_autoconf.c:896
pciactivate(ffff80000002ce00,6) at pciactivate+0xd8 sys/dev/pci/pci.c:230
config_activate_children(ffff80000002f080,6) at config_activate_children+0x1a1 config_suspend sys/kern/subr_autoconf.c:834 [inline]
config_activate_children(ffff80000002f080,6) at config_activate_children+0x1a1 sys/kern/subr_autoconf.c:896
config_suspend_all(6) at config_suspend_all+0x49a config_suspend sys/kern/subr_autoconf.c:-1 [inline]
config_suspend_all(6) at config_suspend_all+0x49a sys/kern/subr_autoconf.c:858
boot(104) at boot+0x253 sys/arch/amd64/amd64/machdep.c:946
reboot(104) at reboot+0xb1
panic(ffffffff833e0381) at panic+0x1f9
kerntrap(ffff80003c444aa0) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dt_ioctl_record_stop(ffff80000158d000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593
dtclose(11e5f,2,2000,ffff80003c426560) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(11e5f,2,2000,ffff80003c426560) at dtclose+0x109 sys/dev/dt/dt_dev.c:239
spec_close(ffff80003c444c50) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd806669ebf0,2,fffffd80097fd680,ffff80003c426560) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806d688b90,ffff80003c426560) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806d688b90,ffff80003c426560) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd806d688b90,ffff80003c426560) at fdrop+0x121 sys/kern/kern_descrip.c:1280
closef(fffffd806d688b90,ffff80003c426560) at closef+0x192 sys/kern/kern_descrip.c:1264
fdfree(ffff80003c426560) at fdfree+0x116 sys/kern/kern_descrip.c:1195
exit1(ffff80003c426560,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff80003c426560,ffff80003c444fc0,ffff80003c444f10) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003c444fc0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c444fc0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x771261b5a8d0, count: -31
ddb{0}> machine ddbcpu 1
Stopped at      proc_trampoline+0xc7:   movl    $0,%gs:0x688
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x7ab4b2b05390, count: 14
ddb{1}> trace
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x7ab4b2b05390, count: -1

Crashes (374):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/01/14 21:30 openbsd bf518416d64f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/13 15:36 openbsd 67ddd48175b9 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/13 11:27 openbsd 67ddd48175b9 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/13 08:54 openbsd a9df5e8d0934 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/13 01:22 openbsd a9df5e8d0934 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/12 21:41 openbsd a9df5e8d0934 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/11 18:58 openbsd 527652508a36 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/11 15:57 openbsd 294bdc40ca4d 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/11 13:00 openbsd 294bdc40ca4d 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/09 09:14 openbsd 0f50c032e950 c1f5c7d0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/09 07:12 openbsd 0f50c032e950 c1f5c7d0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/09 02:23 openbsd 0f50c032e950 c1f5c7d0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/08 13:08 openbsd b9d9e3fc96bc c1f5c7d0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/08 11:04 openbsd d77c41cf8f5a c1f5c7d0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/07 23:18 openbsd d77c41cf8f5a c1f5c7d0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/07 14:46 openbsd b6bc6e61f2e3 15f6fd08 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/07 09:48 openbsd c7117ed52e15 15f6fd08 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/05 21:09 openbsd 97968167a1e0 917fe602 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/04 16:49 openbsd 079c76c73fb6 e3fbc05e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/01 13:45 openbsd 6a1433bd6d39 2733a373 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/01 04:32 openbsd 6a1433bd6d39 2733a373 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/30 07:32 openbsd 163664d81c58 17e6c961 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/30 01:52 openbsd 163664d81c58 17e6c961 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/29 20:05 openbsd 4420759a09aa 9831da75 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/27 07:39 openbsd 5ce3a7f811ea 5dc09de1 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/26 18:12 openbsd 97e1364f97a2 5dc09de1 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/25 15:12 openbsd b1d076877106 5dc09de1 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/24 19:53 openbsd 1dc30a6de584 5dc09de1 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/24 18:35 openbsd 1dc30a6de584 5dc09de1 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/23 19:05 openbsd c8ac761eb131 5dc09de1 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/23 10:38 openbsd c8ac761eb131 607f1549 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/22 11:09 openbsd 40385d83a6c6 49b0fb03 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/22 06:56 openbsd 40385d83a6c6 49b0fb03 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/21 19:50 openbsd 83a64bde9847 e14dbeb9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/21 11:01 openbsd 668f1f05e71c e14dbeb9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: proc_trampoline
2025/12/21 09:01 openbsd 668f1f05e71c e14dbeb9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: proc_trampoline
2025/12/21 05:26 openbsd 668f1f05e71c e14dbeb9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/20 23:34 openbsd df8f251ef5f9 e14dbeb9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: proc_trampoline
2025/12/20 21:17 openbsd df8f251ef5f9 e14dbeb9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/20 07:23 openbsd ddef1afac53e e14dbeb9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/19 09:10 openbsd 3f23c8878a83 e14dbeb9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: proc_trampoline
2025/12/19 07:27 openbsd 3f23c8878a83 e14dbeb9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/19 05:25 openbsd 3f23c8878a83 e14dbeb9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: proc_trampoline
2025/12/19 02:43 openbsd 3f23c8878a83 e14dbeb9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: proc_trampoline
2025/12/18 22:52 openbsd 3f23c8878a83 e14dbeb9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/18 19:29 openbsd 10e7775f0707 d6d0fdea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/02/06 12:47 openbsd 4a7e1005694f 1e1faf27 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
* Struck through repros no longer work on HEAD.