uvm_fault(0xfffffa00613f13f8, 0x0, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      shm_deallocate_segment+0x3b:    movq    0(%rax),%rdi
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*326533  36623      0           0  0x4000000    0K syz-executor
shm_deallocate_segment(fffffa00619c0e88) at shm_deallocate_segment+0x3b sys/kern/sysv_shm.c:157
sys_shmctl(ffff800045fe6a80,ffff80003bfb8b90,ffff80003bfb8ae0) at sys_shmctl+0x4f2 sys/kern/sysv_shm.c:383
syscall(ffff80003bfb8b90) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003bfb8b90) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x84c0e848940, 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{0}> 
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: uvm_fault(0xfffffa00613f13f8, 0x0, 0, 1) -> e
ddb{0}> show kasan
No such command
ddb{0}> trace
shm_deallocate_segment(fffffa00619c0e88) at shm_deallocate_segment+0x3b sys/kern/sysv_shm.c:157
sys_shmctl(ffff800045fe6a80,ffff80003bfb8b90,ffff80003bfb8ae0) at sys_shmctl+0x4f2 sys/kern/sysv_shm.c:383
syscall(ffff80003bfb8b90) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003bfb8b90) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x84c0e848940, count: -4
ddb{0}> show registers
rdi               0xfffffa00619c0e88
rsi                                0
rbp               0xffff80003bfb89d0
rbx                                0
rdx                                0
rcx               0xffff800045fe6a80
rax                                0
r8                0xffffffff82c03010    uvm_map_inentry_sp
r9                                 0
r10                                0
r11                0x6cccf9f478c0c75
r12                                0
r13               0xfffffa00619c0e88
r14               0xfffffa00619c0e88
r15                            0xfff
rip               0xffffffff820fec8b    shm_deallocate_segment+0x3b
cs                               0x8
rflags                       0x10206    __ALIGN_SIZE+0xf206
rsp               0xffff80003bfb89a0
ss                              0x10
shm_deallocate_segment+0x3b:    movq    0(%rax),%rdi
ddb{0}> show proc
PROC (syz-executor) tid=326533 pid=36623 tcnt=3 stat=onproc
    flags process=0 proc=4000000<THREAD>
    runpri=32, usrpri=50, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff80003c400568,0xffff800045fe7788
    process=0xffff80003c3e8eb0 user=0xffff80003bfb3000, vmspace=0xfffffa00613f13f8
    estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{0}> ps
   PID     TID   PPID   UID  S      PRLAGS     PFLAGS WAIT      COMMAND
 36623  101822   2345     0  2           0          0           syz-executor
*36623  326533   2345     0  7           0  0x4000000           syz-executor
 36623  497968   2345     0  2           0  0x4000000           syz-executor
 29659  452999  99285     0  2           0          0           syz-executor
 29659  270032  99285     0  3           0  0x4000080 pipewr    syz-executor
 69606  357898  91885     0  2           0          0           syz-executor
 69606  193157  91885     0  2           0  0x4000000           syz-executor
 69606  267769  91885     0  3           0  0x4000000 vmmaplk   syz-executor
 22041  519675  95332     0  2           0          0           syz-executor
 22041  441774  95332     0  2           0  0x4000000           syz-executor
 22041  517936  95332     0  2           0  0x4000000           syz-executor
 21718  491854  38240     0  2           0          0           syz-executor
 21718   89954  38240     0  2           0  0x4000000           syz-executor
 21718  449983  38240     0  2           0  0x4000000           syz-executor
 21718  233102  38240     0  3           0  0x4000080 fsleep    syz-executor
 88227  403024   5590     0  2         0x2          0           syz-executor
 92282  202090   5590     0  2         0x2          0           syz-executor
 84357  428094      0     0  3     0x14000      0x280 nfsidl    nfsio
 21125  260035      0     0  3     0x14000      0x280 nfsidl    nfsio
 94513  327755      0     0  3     0x14000      0x280 nfsidl    nfsio
  9846  458716      0     0  3     0x14000      0x280 nfsidl    nfsio
 62640  283313      0     0  3     0x14000      0x280 nfsidl    nfsio
 14891  354940      0     0  3     0x14000      0x280 nfsidl    nfsio
 10361  452485      0     0  3     0x14000      0x280 nfsidl    nfsio
 72351   17025      0     0  3     0x14000      0x280 nfsidl    nfsio
 58849  487206      0     0  3     0x14000      0x280 nfsidl    nfsio
  6422  485176      0     0  3     0x14000      0x280 nfsidl    nfsio
 75658  494729      0     0  3     0x14000      0x280 nfsidl    nfsio
 74494  382379      0     0  3     0x14000      0x280 nfsidl    nfsio
 39708  157005      0     0  3     0x14000      0x280 nfsidl    nfsio
 13597  331581      0     0  3     0x14000      0x280 nfsidl    nfsio
 17745  432092      0     0  3     0x14000      0x280 nfsidl    nfsio
  9637  167289      0     0  3     0x14000      0x280 nfsidl    nfsio
 89389  382989      0     0  3     0x14000      0x280 nfsidl    nfsio
 57742   52314      0     0  3     0x14000      0x280 nfsidl    nfsio
 29591  155066      0     0  3     0x14000      0x280 nfsidl    nfsio
 79876  188309      0     0  3     0x14000      0x280 nfsidl    nfsio
 95332  473335   5590     0  3         0x2       0x80 nanoslp   syz-executor
  2345  290186   5590     0  3         0x2       0x80 nanoslp   syz-executor
 99285  109253   5590     0  3         0x2       0x80 nanoslp   syz-executor
 91885  447503   5590     0  3         0x2       0x80 nanoslp   syz-executor
 38240  362371   5590     0  3         0x2       0x80 nanoslp   syz-executor
 45084    6811   5590     0  2         0x2          0           syz-executor
  5590  434605  61007     0  3         0x2       0x80 kqread    syz-executor
 61007   62136  84484     0  3    0x100002       0x88 sigsusp   ksh
 84484  208678  88338     0  3        0x10       0x88 kqread    sshd-session
 88338  219996  44295     0  3        0x12       0x80 kqread    sshd-session
 28554  386769      1     0  3    0x100003       0x80 ttyin     getty
 44295  505646      1     0  3           0       0x88 kqread    sshd
 16244   67344  34764    74  3   0x1100012       0x80 bpf       pflogd
 34764  143388      1     0  3           0       0x80 sbwait    pflogd
 52888  394541  13449    73  3   0x1100010       0x80 kqread    syslogd
 13449  224294      1     0  3    0x100002       0x80 sbwait    syslogd
 22275   80439      1     0  3    0x100000       0x80 kqread    resolvd
 48839  156789  44356    77  3    0x100012       0x80 kqread    dhcpleased
 77895   18478  44356    77  3    0x100012       0x80 kqread    dhcpleased
 44356  306391      1     0  3           0       0x80 kqread    dhcpleased
 16149  243864      0     0  3     0x14000      0x200 bored     smr
 30079  104825      0     0  2     0x14000      0x200           zerothread
 25140   55876      0     0  3     0x14000      0x200 aiodoned  aiodoned
 80668  448090      0     0  3     0x14000      0x200 syncer    update
 25580  461922      0     0  3     0x14000      0x200 cleaner   cleaner
 94851  247794      0     0  3     0x14000      0x200 reaper    reaper
 21524  207685      0     0  3     0x14000      0x200 pgdaemon  pagedaemon
 26267   76152      0     0  3     0x14000      0x200 bored     viomb
 62316  454020      0     0  3     0x14000 0x40000200 acpi0     acpi0
 22065  523228      0     0  7     0x14000 0x40000200           idle1
  3134  200324      0     0  3     0x14000      0x200 bored     softnet1
 12130   19661      0     0  3     0x14000      0x200 bored     softnet0
 33728  302031      0     0  3     0x14000      0x200 bored     systqmp
  6877  117869      0     0  3     0x14000      0x200 bored     systq
 43227  113131      0     0  3     0x14000      0x200 tmoslp    softclockmp
 74088   16614      0     0  3     0x14000 0x40000200 tmoslp    softclock
 52378  121221      0     0  3     0x14000 0x40000200           idle0
     1  422048      0     0  3         0x2       0x80 wait      init
     0       0     -1     0  3     0x10000      0x200 scheduler swapper
ddb{0}> show all locks
Process 36623 (syz-executor) thread 0xffff800045fe6a80 (326533)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a5ea40)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline]
#1  syscall+0xaf4 sys/arch/amd64/amd64/trap.c:791
#2  Xsyscall+0x128
Process 69606 (syz-executor) thread 0xffff80002a2234d0 (193157)
exclusive rwlock vmmaplk r = 0 (0xfffffa00613f1c98)
#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  upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:194
#6  usertrap+0x430 sys/arch/amd64/amd64/trap.c:648
#7  recall_trap+0x8
Process 22041 (syz-executor) thread 0xffff80003c4002d0 (441774)
exclusive rrwlock inode r = 0 (0xfffffa006fda8208)
#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  rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3  VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4  vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5  spec_open_clone+0x290 sys/kern/spec_vnops.c:725
#6  spec_open+0x319 sys/kern/spec_vnops.c:148
#7  VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
#8  vn_open+0x7a5 sys/kern/vfs_vnops.c:183
#9  doopenat+0x35b sys/kern/vfs_syscalls.c:1163
#10 sys_openat+0x58 sys/kern/vfs_syscalls.c:1102
#11 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#11 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791
#12 Xsyscall+0x128
Process 21718 (syz-executor) thread 0xffff80003c4014f8 (449983)
exclusive rwlock unix r = 0 (0xffff8000016294c8)
#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  socreate+0x214 pru_attach sys/sys/protosw.h:-1 [inline]
#2  socreate+0x214 sys/kern/uipc_socket.c:220
#3  sys_socketpair+0x7b sys/kern/uipc_syscalls.c:473
#4  syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#4  syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791
#5  Xsyscall+0x128
Process 88227 (syz-executor) thread 0xffff80003c3e22c8 (403024)
exclusive rwlock vmmaplk r = 0 (0xfffffa000b1f78a0)
#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:5170
#3  uvmspace_fork+0x12b sys/uvm/uvm_map.c:3752
#4  process_new+0x583 sys/kern/kern_fork.c:282
#5  fork1+0x3f9 sys/kern/kern_fork.c:-1
#6  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6  syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
#7  Xsyscall+0x128
exclusive rwlock vmmaplk r = 0 (0xfffffa00613f1e80)
#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:5170
#3  uvmspace_fork+0x44 sys/uvm/uvm_map.c:3743
#4  process_new+0x583 sys/kern/kern_fork.c:282
#5  fork1+0x3f9 sys/kern/kern_fork.c:-1
#6  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6  syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
#7  Xsyscall+0x128
Process 92282 (syz-executor) thread 0xffff80003c401790 (202090)
exclusive rwlock vmmaplk r = 0 (0xfffffa00613f16e0)
#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:5170
#3  uvmspace_fork+0x12b sys/uvm/uvm_map.c:3752
#4  process_new+0x583 sys/kern/kern_fork.c:282
#5  fork1+0x3f9 sys/kern/kern_fork.c:-1
#6  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6  syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
#7  Xsyscall+0x128
exclusive rwlock vmmaplk r = 0 (0xfffffa00613f1128)
#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:5170
#3  uvmspace_fork+0x44 sys/uvm/uvm_map.c:3743
#4  process_new+0x583 sys/kern/kern_fork.c:282
#5  fork1+0x3f9 sys/kern/kern_fork.c:-1
#6  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6  syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
#7  Xsyscall+0x128
Process 45084 (syz-executor) thread 0xffff800045ffdc90 (6811)
exclusive rwlock vmmaplk r = 0 (0xfffffa00613f1ab0)
#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:5170
#3  uvmspace_fork+0x12b sys/uvm/uvm_map.c:3752
#4  process_new+0x583 sys/kern/kern_fork.c:282
#5  fork1+0x3f9 sys/kern/kern_fork.c:-1
#6  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6  syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
#7  Xsyscall+0x128
exclusive rwlock vmmaplk r = 0 (0xfffffa006e1de8b0)
#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:5170
#3  uvmspace_fork+0x44 sys/uvm/uvm_map.c:3743
#4  process_new+0x583 sys/kern/kern_fork.c:282
#5  fork1+0x3f9 sys/kern/kern_fork.c:-1
#6  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6  syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
#7  Xsyscall+0x128
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 11053  12083K   12214K 166960K     12208        0
            pcb    17     12K      12K 166960K        36        0
         rtable   225      8K       8K 166960K       475        0
             pf    32     17K      24K 166960K        75        0
         ifaddr    39      6K       7K 166960K        64        0
        ifgroup    51      2K       2K 166960K        79        0
         sysctl     1      1K       9K 166960K         5        0
       counters    68     36K      37K 166960K        84        0
       ioctlops     0      0K       4K 166960K      1514        0
            iov     0      0K       2K 166960K         2        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1290     81K      81K 166960K      1458        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K       1K 166960K         2        0
         VM map     2      1K       1K 166960K         2        0
            sem     5      0K       0K 166960K         6        0
        dirhash    12      2K       2K 166960K        15        0
           ACPI  1734    201K     291K 166960K     11964        0
      file desc    18     65K      93K 166960K       257        0
           proc    72    115K     180K 166960K       638        0
        subproc    72      4K       4K 166960K       108        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     0      0K       0K 166960K         4        0
       in_multi    88      5K       6K 166960K       137        0
    ether_multi     1      0K       0K 166960K         2        0
            mrt     0      0K       0K 166960K        10        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys    55    254K     254K 166960K        55        0
           exec     0      0K       1K 166960K       436        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   216    159K     176K 166960K      4100        0
       UVM aobj     3      2K       2K 166960K         3        0
     pinsyscall    43     86K     104K 166960K      1531        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K         1        0
            NDP    13      0K       2K 166960K        41        0
           temp    55   9122K    9136K 166960K      7835        0
         kqueue    13     20K      26K 166960K        40        0
      SYN cache     2     16K      16K 166960K         2        0
ddb{0}> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache    128       28    0        0     1     0     1     1     0     8    0
rtpcb      120       49    0       46     1     0     1     1     0     8    0
rtentry    176      147    0       47     6     0     6     6     0     8    0
unpcb      144       76    0       56     1     0     1     1     0     8    0
syncache   336        4    0        4     1     1     0     1     0     8    0
tcpcb      736       25    0       21     1     0     1     1     0     8    0
arp        136       24    0        8     1     0     1     1     0     8    0
inpcb      328      132    0      125     2     0     2     2     0     8    1
nd6        152       34    0       13     1     0     1     1     0     8    0
kcovpl      48       12    0        4     1     0     1     1     0     8    0
mppekey    1024       1    0        1     1     0     1     1     0     8    1
ppxss      1192       2    0        2     1     0     1     1     0     8    1
pppxif     1576       1    0        1     1     0     1     1     0     8    1
pffrag     232        1    0        0     1     0     1     1     0   482    0
pffrnode    88        1    0        0     1     0     1     1     0     8    0
pffrent     40        1    0        0     1     0     1     1     0     8    0
pfosfp      40     1438    0     1014     5     0     5     5     0     8    0
pfosfpen   112     1438    0      717    21     0    21    21     0     8    0
pfanchor   1288       2    0        0     1     0     1     1     0     8    0
pfstitem    24       39    0        0     1     0     1     1     0     8    0
pfstkey    128       39    0        0     2     0     2     2     0     8    0
pfstate    448       39    0        0     5     0     5     5     0     8    0
pfrule     1360      21    0       16     2     1     1     2     0     8    0
art_heap8  4096       2    0        0     2     0     2     2     0     8    0
art_heap4  256      602    0      185    31     1    30    30     0     8    3
art_table   40      604    0      185     5     0     5     5     0     8    0
art_node    32      147    0       56     1     0     1     1     0     8    0
sysvmsgpl   40       24    0       12     1     0     1     1     0     8    0
semapl      72        4    0        1     1     0     1     1     0     8    0
shmpl      120        1    0        0     1     0     1     1     0     8    0
dirhash    1024      19    0        2     3     0     3     3     0     8    0
dino2pl    256     1679    0      207    93     0    93    93     0     8    0
ffsino     296     1679    0      207   114     0   114   114     0     8    0
nchpl      144     1965    0      259    64     0    64    64     0     8    0
vnodes     216     1848    0        0   103     0   103   103     0     8    0
namei      1024    7198    0     7197     8     7     1     3     0     8    0
percpumem   16       58    0        8     1     0     1     1     0     8    0
kstatmem   264       39    0       14     2     0     2     2     0     8    0
scxspl     216     6854    0     6854     4     3     1     3     1     8    1
plimitpl   152       43    0       24     1     0     1     1     0     8    0
sigapl     424      598    0      530     9     1     8     8     0     8    0
knotepl    120      508    0        0    16     0    16    16     0     8    0
kqueuepl   224       42    0       33     1     0     1     1     0     8    0
pipepl     344      156    0      128     3     0     3     3     0     8    0
fdescpl    528      562    0      530     3     0     3     3     0     8    0
filepl     160     2071    0     1852    10     0    10    10     0     8    0
lockfpl    104       28    0       26     1     0     1     1     0     8    0
lockfspl    48       15    0       13     1     0     1     1     0     8    0
sessionpl  144       29    0       20     1     0     1     1     0     8    0
pgrppl      48       41    0       24     1     0     1     1     0     8    0
ucredpl    104      173    0      160     1     0     1     1     0     8    0
zombiepl   144      565    0      565     2     1     1     1     0     8    1
processpl  1240     598    0      530     6     0     6     6     0     8    0
procpl     664      731    0      653     8     1     7     7     0     8    0
sockpl     752      259    0      229     4     0     4     4     0     8    0
mcl64k     65536      4    0        0     1     0     1     1     0     8    0
mcl16k     16384      3    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     120    0        0    15     0    15    15     0     8    0
mcl2k      2048      20    0        0     3     0     3     3     0     8    0
mextrefs    64       21    0        0     1     0     1     1     0     8    0
mtagpl      96        5    0        0     1     0     1     1     0     8    0
mbufpl     256      201    0        0    13     0    13    13     0     8    0
bufpl      272     2542    0      105   163     0   163   163     0     8    0
anonpl      32     5442    0        0    44     0    44    44     0   247    0
amapchunkpl 152   11307    0    10877    30     9    21    27     0   158    3
amappl16   200     1530    0     1511     5     3     2     5     0     8    0
amappl15   192        7    0        7     1     1     0     1     0     8    0
amappl14   184      481    0      480     1     0     1     1     0     8    0
amappl13   176      135    0      123     1     0     1     1     0     8    0
amappl12   168      832    0      804     2     0     2     2     0     8    0
amappl11   160        4    0        4     1     1     0     1     0     8    0
amappl10   152       64    0       50     1     0     1     1     0     8    0
amappl9    144      273    0      273     1     1     0     1     0     8    0
amappl8    136      117    0      115     1     0     1     1     0     8    0
amappl7    128      181    0      167     1     0     1     1     0     8    0
amappl6    120      187    0      186     1     0     1     1     0     8    0
amappl5    112      101    0       88     1     0     1     1     0     8    0
amappl4    104      329    0      309     1     0     1     1     0     8    0
amappl3     96     1990    0     1906     3     0     3     3     0     8    0
amappl2     88      671    0      598     2     0     2     2     0     8    0
amappl1     80    11329    0    10733    15     1    14    15     0     8    1
amappl      88     3283    0     3139     4     0     4     4     0    92    0
uvmvnodes   80      102    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        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        3    0        0     1     0     1     1     0     8    0
uaddrrnd    24      562    0      530     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24      562    0      530     1     0     1     1     0     8    0
vmmpekpl   168     6708    0     6661     3     0     3     3     0     8    0
vmmpepl    168    45106    0    43263    92     5    87    87     0   357    6
vmsppl     488      561    0      530     6     1     5     5     0     8    1
rwobjpl     80    15982    0    14981    24     2    22    24     0     8    0
pdppl      4096    1131    0     1060   101    30    71    85     0     8    0
pvpl        32    12229    0        0   100     1    99    99     0   265    0
pmappl     256      561    0      530     3     0     3     3     0     8    0
extentpl    40       46    0       28     1     0     1     1     0     8    0
phpool     112      451    0       42    12     0    12    12     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
shm_deallocate_segment(fffffa00619c0e88) at shm_deallocate_segment+0x3b sys/kern/sysv_shm.c:157
sys_shmctl(ffff800045fe6a80,ffff80003bfb8b90,ffff80003bfb8ae0) at sys_shmctl+0x4f2 sys/kern/sysv_shm.c:383
syscall(ffff80003bfb8b90) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003bfb8b90) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x84c0e848940, count: -4
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
x86_ipi_db(ffff80002999dff0) 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
acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224
sched_idle(ffff80002999dff0) at sched_idle+0x371 sys/kern/kern_sched.c:192
end trace frame: 0x0, count: 10
ddb{1}> trace
x86_ipi_db(ffff80002999dff0) 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
acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224
sched_idle(ffff80002999dff0) at sched_idle+0x371 sys/kern/kern_sched.c:192
end trace frame: 0x0, count: -5