syzbot

panic: pool_do_get: shmpl free list modified: page 0xffffef806718a000; item addr 0xffffef806718ad20; offset 0x40=0xde1ecc82
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 105546  80156      0           0          0    1  syz-executor
* 22013  94762      0           0  0x4000000    0K syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834b46f8) at panic+0x1e5 sys/kern/subr_prf.c:198
pool_do_get(ffffffff83a84670,9,ffff80003c3defa8) at pool_do_get+0x5df
pool_get(ffffffff83a84670,9) at pool_get+0x162 sys/kern/subr_pool.c:-1
shmget_allocate_segment(ffff800033396a80,ffff80003c3df200,2,ffff80003c3df150) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1
sys_shmget(ffff800033396a80,ffff80003c3df200,ffff80003c3df150) at sys_shmget+0x195 sys/kern/sysv_shm.c:503
syscall(ffff80003c3df200) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3df200) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa5a855f3500, count: 7
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: pool_do_get: shmpl free list modified: page 0xffffef806718a000; item addr 0xffffef806718ad20; offset 0x40=0xde1ecc82
ddb{0}> show kasan
No such command
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834b46f8) at panic+0x1e5 sys/kern/subr_prf.c:198
pool_do_get(ffffffff83a84670,9,ffff80003c3defa8) at pool_do_get+0x5df
pool_get(ffffffff83a84670,9) at pool_get+0x162 sys/kern/subr_pool.c:-1
shmget_allocate_segment(ffff800033396a80,ffff80003c3df200,2,ffff80003c3df150) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1
sys_shmget(ffff800033396a80,ffff80003c3df200,ffff80003c3df150) at sys_shmget+0x195 sys/kern/sysv_shm.c:503
syscall(ffff80003c3df200) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3df200) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa5a855f3500, count: -8
ddb{0}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff80003c3dedd0
rbx               0xffffffff839d5e07    cpu_info_full_primary+0x2e07
rdx               0xffff8000016014c0
rcx               0xffff800033396a80
rax               0xffffffff839d4ff0    cpu_info_full_primary+0x1ff0
r8                 0x101010101010101
r9                0x8080808080808080
r10               0x3dbd9d1c9cfcd5f7
r11               0x6dcdac8ec2fade05
r12               0xffffffff839d5c08    cpu_info_full_primary+0x2c08
r13                                0
r14                                0
r15                              0x1
rip               0xffffffff81959d45    db_enter+0x25
cs                               0x8
rflags                         0x246
rsp               0xffff80003c3dedc0
ss                              0x10
db_enter+0x25:  addq    $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor) tid=22013 pid=94762 tcnt=4 stat=onproc
    flags process=0 proc=4000000<THREAD>
    runpri=32, usrpri=69, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff8000333962b8,0xffff800033396560
    process=0xffff80002a3804e8 user=0xffff80003c3da000, vmspace=0xffffef806cf0bb88
    estcpu=19, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 80156  105546  17505      0  7           0                syz-executor
 80156  431109  17505      0  3   0x4000000  biowait       syz-executor
 26840  465395  48671      0  2           0                syz-executor
 26840   31679  48671      0  3   0x4000080  kqsel         syz-executor
 26840  400121  48671      0  3   0x4000080  fsleep        syz-executor
 17532  280578  21412      0  2           0                syz-executor
 17532  346246  21412      0  3   0x4000080  fsleep        syz-executor
 17532   12534  21412      0  3   0x4000080  lockf         syz-executor
 59422  144161   3277      0  2         0x2                syz-executor
 70389  300455  62792      0  2           0                syz-executor
 70389  512510  62792      0  3   0x4000080  fsleep        syz-executor
 94762   36878  66887      0  2           0                syz-executor
 94762  518197  66887      0  2   0x4000000                syz-executor
 94762  255266  66887      0  3   0x4000088  kqpoll        syz-executor
*94762   22013  66887      0  7   0x4000000                syz-executor
 97925  375782  83519      0  2           0                syz-executor
 97925  353317  83519      0  3   0x4000080  fsleep        syz-executor
 97925  466307  83519      0  3   0x4000080  fsleep        syz-executor
 48671  316741   3277      0  3        0x82  nanoslp       syz-executor
 66887   25422   3277      0  2         0x2                syz-executor
 21412     175   3277      0  3        0x82  nanoslp       syz-executor
 62792   73213   3277      0  2         0x2                syz-executor
 17505  266214   3277      0  3        0x82  nanoslp       syz-executor
 83519  109534   3277      0  3        0x82  nanoslp       syz-executor
 42474  195260   3277      0  3        0x82  nanoslp       syz-executor
  3277  313338  43055      0  3        0x82  kqread        syz-executor
 43055  191100  99949      0  3    0x10008a  sigsusp       ksh
 99949  272753  53653      0  3        0x98  kqread        sshd-session
 53653  271112  29497      0  3        0x92  kqread        sshd-session
 41083   28288      1      0  3    0x100083  ttyin         getty
 29497  328952      1      0  3        0x88  kqread        sshd
 38743   63926  48427     74  3   0x1100092  bpf           pflogd
 48427  493323      1      0  3        0x80  sbwait        pflogd
 83118  322957  17624     73  3   0x1100090  kqread        syslogd
 17624  435094      1      0  3    0x100082  sbwait        syslogd
 38854  313064      1      0  3    0x100080  kqread        resolvd
  4851  372598  63814     77  3    0x100092  kqread        dhcpleased
 68810  319806  63814     77  3    0x100092  kqread        dhcpleased
 63814  370574      1      0  3        0x80  kqread        dhcpleased
 26189  284575      0      0  3     0x14200  bored         smr
 85832  220382      0      0  2     0x14200                zerothread
 32827  324807      0      0  3     0x14200  aiodoned      aiodoned
 53282  510105      0      0  3     0x14200  syncer        update
 35792  373973      0      0  3     0x14200  cleaner       cleaner
 91670  521444      0      0  3     0x14200  reaper        reaper
 31791  119595      0      0  3     0x14200  pgdaemon      pagedaemon
 70179  419004      0      0  3     0x14200  bored         viomb
 43506  329952      0      0  3  0x40014200  acpi0         acpi0
   901  179868      0      0  3  0x40014200                idle1
 75367  333849      0      0  3     0x14200  bored         softnet1
 74102  262452      0      0  3     0x14200  bored         softnet0
 63896  378701      0      0  3     0x14200  bored         systqmp
 23082   97075      0      0  3     0x14200  bored         systq
 40815  213686      0      0  3     0x14200  tmoslp        softclockmp
  9781  198682      0      0  3  0x40014200  tmoslp        softclock
 85220   91954      0      0  3  0x40014200                idle0
     1   64760      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex shmpl r = 0 (0xffffffff83a84688)
#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  pool_get+0x124 sys/kern/subr_pool.c:585
#3  shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1
#4  sys_shmget+0x195 sys/kern/sysv_shm.c:503
#5  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5  syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#6  Xsyscall+0x128
Process 80156 (syz-executor) thread 0xffff800033396550 (431109)
exclusive rrwlock inode r = 0 (0xffffef80685bd7b8)
#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  ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline]
#4  ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150
#5  ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232
#6  ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393
#7  ufs_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1759
#8  ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167
#9  VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121
#10 domknodat+0x469 sys/kern/vfs_syscalls.c:1579
#11 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#11 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#12 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xffffef80685bd0c8)
#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  vfs_lookup+0x12b sys/kern/vfs_lookup.c:431
#6  namei+0x7c5 sys/kern/vfs_lookup.c:250
#7  domknodat+0xb4 sys/kern/vfs_syscalls.c:1531
#8  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9  Xsyscall+0x128
Process 94762 (syz-executor) thread 0xffff800033396a80 (22013)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83b2a300)
#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:783
#2  Xsyscall+0x128
exclusive mutex shmpl r = 0 (0xffffffff83a84688)
#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  pool_get+0x124 sys/kern/subr_pool.c:585
#3  shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1
#4  sys_shmget+0x195 sys/kern/sysv_shm.c:503
#5  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5  syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#6  Xsyscall+0x128
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 11054  12091K   12307K 166960K     12197        0
            pcb    17     12K      20K 166960K        66        0
         rtable   199      6K       7K 166960K       359        0
             pf    32     17K      18K 166960K        55        0
         ifaddr    40      7K       7K 166960K        50        0
        ifgroup    51      2K       2K 166960K        61        0
         sysctl     1      1K       9K 166960K         5        0
       counters    68     36K      37K 166960K        80        0
       ioctlops     0      0K       4K 166960K      1494        0
            iov     0      0K       1K 166960K         4        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1329     84K      84K 166960K      1476        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K       5K 166960K         5        0
         VM map     2      1K       1K 166960K         2        0
            sem     4      0K       0K 166960K         5        0
        dirhash    12      2K       2K 166960K        15        0
           ACPI  1734    201K     291K 166960K     11964        0
      file desc    17     61K      89K 166960K       199        0
           proc    80    132K     164K 166960K       563        0
        subproc    67      4K       4K 166960K        76        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     1      0K       0K 166960K         4        0
       in_multi    91      6K       7K 166960K       105        0
    ether_multi     1      0K       0K 166960K         1        0
            mrt     0      0K       0K 166960K         3        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys    61    281K     281K 166960K        61        0
           exec     0      0K       1K 166960K       391        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   237    167K     175K 166960K      3673        0
       UVM aobj     5      2K       2K 166960K         7        0
     pinsyscall    42     84K     102K 166960K      1355        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K         3        0
            NDP    11      0K       2K 166960K        31        0
           temp    33   9114K    9120K 166960K      4085        0
         kqueue    14     22K      30K 166960K        45        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       36    0       32     1     0     1     1     0     8    0
rtentry    176      112    0       23     6     0     6     6     0     8    0
unpcb      144      252    0      235     1     0     1     1     0     8    0
syncache   336        4    0        4     1     0     1     1     0     8    1
tcpcb      736       19    0       15     1     0     1     1     0     8    0
arp        136       18    0        2     1     0     1     1     0     8    0
inpcb      328      100    0       91     2     0     2     2     0     8    0
nd6        152       24    0        3     1     0     1     1     0     8    0
pkpcb       40        1    0        0     1     0     1     1     0     8    0
kcovpl      48        8    0        1     1     0     1     1     0     8    0
ppxss      1192       5    0        5     1     0     1     1     0     8    1
pfosfp      40     1428    0     1005     5     0     5     5     0     8    0
pfosfpen   112     1428    0      714    21     0    21    21     0     8    0
pftag       88        1    0        0     1     0     1     1     0     8    0
pfstitem    24       22    0        0     1     0     1     1     0     8    0
pfstkey    128       22    0        0     1     0     1     1     0     8    0
pfstate    448       22    0        0     3     0     3     3     0     8    0
pfrule     1360      22    0       17     2     1     1     2     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256      484    0       85    31     0    31    31     0     8    3
art_table   40      485    0       85     5     0     5     5     0     8    0
art_node    32      112    0       32     1     0     1     1     0     8    0
semapl      72        3    0        1     1     0     1     1     0     8    0
shmpl      112        4    0        2     1     0     1     1     0     8    0
pool(0xffffffff83a84670:shmpl): page inconsistency: page 0xffffef806718a000; 32 on list, 2 missing, 35 items per page
dirhash    1024      19    0        2     3     0     3     3     0     8    0
dino2pl    256     1712    0      241    93     0    93    93     0     8    0
ffsino     296     1712    0      241   114     0   114   114     0     8    0
nchpl      144     1982    0      275    64     0    64    64     0     8    0
rtmask      32        1    0        1     1     0     1     1     0     8    1
vnodes     216     1858    0        0   104     0   104   104     0     8    0
namei      1024    6348    0     6347     2     0     2     2     0     8    1
percpumem   16       56    0        6     1     0     1     1     0     8    0
kstatmem   264       33    0        8     2     0     2     2     0     8    0
scsiplug    72        2    0        2     1     0     1     1     0     8    1
scxspl     216     6725    0     6724     4     3     1     3     1     8    0
plimitpl   152       35    0       18     1     0     1     1     0     8    0
sigapl     424      514    0      467     7     0     7     7     0     8    1
knotepl    120      519    0        0    16     0    16    16     0     8    0
kqueuepl   224       45    0       32     1     0     1     1     0     8    0
pipepl     344      131    0      103     3     0     3     3     0     8    0
fdescpl    528      498    0      467     3     0     3     3     0     8    0
filepl     160     2422    0     2206    13     0    13    13     0     8    2
lockfpl    104       44    0       40     1     0     1     1     0     8    0
lockfspl    48       20    0       17     1     0     1     1     0     8    0
sessionpl  144       25    0       16     1     0     1     1     0     8    0
pgrppl      48       34    0       17     1     0     1     1     0     8    0
ucredpl    104      271    0      258     1     0     1     1     0     8    0
zombiepl   144      468    0      467     1     0     1     1     0     8    0
processpl  1232     514    0      467     5     0     5     5     0     8    1
procpl     664      626    0      568     6     0     6     6     0     8    1
sockpl     752      424    0      393     7     0     7     7     0     8    3
mcl64k     65536      3    0        0     1     0     1     1     0     8    0
mcl16k     16384      3    0        0     1     0     1     1     0     8    0
mcl9k128   9344       1    0        0     1     0     1     1     0     8    0
mcl8k      8192       2    0        0     1     0     1     1     0     8    0
mcl4k      4096     112    0        0    14     0    14    14     0     8    0
mcl2k      2048      18    0        0     3     0     3     3     0     8    0
mextrefs    64       20    0        0     1     0     1     1     0     8    0
mtagpl      96        3    0        0     1     0     1     1     0     8    0
mbufpl     256      185    0        0    12     0    12    12     0     8    0
bufpl      272     2428    0      105   155     0   155   155     0     8    0
anonpl      32     3716    0        0    30     0    30    30     0   247    0
amapchunkpl 152   10205    0     9703    22     1    21    21     0   158    1
amappl16   200     1649    0     1627     5     2     3     5     0     8    1
amappl15   192        3    0        3     1     1     0     1     0     8    0
amappl14   184      428    0      427     1     0     1     1     0     8    0
amappl13   176      128    0      116     1     0     1     1     0     8    0
amappl12   168      801    0      771     2     0     2     2     0     8    0
amappl11   160        8    0        8     1     1     0     1     0     8    0
amappl10   152       70    0       56     1     0     1     1     0     8    0
amappl9    144      274    0      274     1     1     0     1     0     8    0
amappl8    136      118    0      115     1     0     1     1     0     8    0
amappl7    128      148    0      134     1     0     1     1     0     8    0
amappl6    120      234    0      232     1     0     1     1     0     8    0
amappl5    112      103    0       93     1     0     1     1     0     8    0
amappl4    104      296    0      277     1     0     1     1     0     8    0
amappl3     96     1880    0     1762     4     0     4     4     0     8    0
amappl2     88      550    0      492     2     0     2     2     0     8    0
amappl1     80    10733    0    10125    16     1    15    15     0     8    2
amappl      88     2932    0     2767     4     0     4     4     0    92    0
uvmvnodes   80      101    0        0     3     0     3     3     0     8    0
dma4096    4096       1    0        1     1     1     0     1     0     8    0
dma1024    1024       2    0        1     1     0     1     1     0     8    0
dma256     256        6    0        6     1     1     0     1     0     8    0
dma128     128      254    0      254     2     1     1     1     0     8    1
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        6    0        2     1     0     1     1     0     8    0
uaddrrnd    24      498    0      467     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24      498    0      467     1     0     1     1     0     8    0
vmmpekpl   168     6060    0     6022     2     0     2     2     0     8    0
vmmpepl    168    41249    0    39336    87     0    87    87     0   357    2
vmsppl     488      497    0      467     5     0     5     5     0     8    1
rwobjpl     80    15046    0    14011    23     0    23    23     0     8    1
pdppl      4096    1003    0      934    95    22    73    83     0     8    4
pvpl        32    10874    0        0    88     0    88    88     0   265    0
pmappl     256      497    0      467     3     0     3     3     0     8    0
extentpl    40       46    0       28     1     0     1     1     0     8    0
phpool     112      425    0       25    12     0    12    12     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834b46f8) at panic+0x1e5 sys/kern/subr_prf.c:198
pool_do_get(ffffffff83a84670,9,ffff80003c3defa8) at pool_do_get+0x5df
pool_get(ffffffff83a84670,9) at pool_get+0x162 sys/kern/subr_pool.c:-1
shmget_allocate_segment(ffff800033396a80,ffff80003c3df200,2,ffff80003c3df150) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1
sys_shmget(ffff800033396a80,ffff80003c3df200,ffff80003c3df150) at sys_shmget+0x195 sys/kern/sysv_shm.c:503
syscall(ffff80003c3df200) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3df200) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa5a855f3500, count: -8
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
end of kernel
end trace frame: 0x789ca596df30, count: 12
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
end of kernel
end trace frame: 0x789ca596df30, count: -3