syzbot


panic: acquiring blockable sleep lock with spinlock or critical section held (rwlock) vmmaplk

Status: closed as dup on 2020/04/28 07:03
Reported-by: syzbot+f43e98f1697272e6e63a@syzkaller.appspotmail.com
First crash: 1009d, last: 987d
Duplicate of (1):
Title Repro Cause bisect Fix bisect Count Last Reported
panic: acquiring blockable sleep lock with spinlock or critical section held (kernel_lock) &kernel_lock (2) C 152 517d 1237d
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd panic: acquiring blockable sleep lock with spinlock or critical section held (rwlock) vmmaplk (2) 1 79d 79d 0/3 upstream: reported on 2022/11/13 01:27

Sample crash report:
panic: acquiring blockable sleep lock with spinlock or critical section held (rwlock) vmmaplk
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 261401  50748      0         0x2  0x4000000    1  syz-fuzzer
*382173  49690      0     0x14000 0x40000200    0K softclock
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8220d011) at panic+0x15c sys/kern/subr_prf.c:207
witness_checkorder(ffffffff8265cf78,1,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821
rw_enter_read(ffffffff8265cf68) at rw_enter_read+0x66 sys/kern/kern_rwlock.c:111
uvmfault_lookup(ffff800020e268f8,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1448
uvm_fault(ffffffff8265cf60,100000000,0,2) at uvm_fault+0x7f sys/uvm/uvm_fault.c:524
pageflttrap(ffff800020e26a90,0) at pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221
kerntrap(ffff800020e26a90) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
pool_cache_get(ffffffff82660f40) at pool_cache_get+0x118 pool_cache_list_alloc sys/kern/subr_pool.c:1809 [inline]
pool_cache_get(ffffffff82660f40) at pool_cache_get+0x118 sys/kern/subr_pool.c:1879
pool_get(ffffffff82660f40,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_get(2,3) at m_get+0x4c sys/kern/uipc_mbuf.c:250
sbappendaddr(fffffd806f6d4000,fffffd806f6d4088,ffffffff8229d968,fffffd806b860e00,0) at sbappendaddr+0x2e9 sys/kern/uipc_socket2.c:804
rtm_sendup(fffffd806f6d4000,fffffd806b860e00,0) at rtm_sendup+0xef sys/net/rtsock.c:594
end trace frame: 0xffff800020e26e40, count: 0
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
acquiring blockable sleep lock with spinlock or critical section held (rwlock) vmmaplk
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8220d011) at panic+0x15c sys/kern/subr_prf.c:207
witness_checkorder(ffffffff8265cf78,1,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821
rw_enter_read(ffffffff8265cf68) at rw_enter_read+0x66 sys/kern/kern_rwlock.c:111
uvmfault_lookup(ffff800020e268f8,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1448
uvm_fault(ffffffff8265cf60,100000000,0,2) at uvm_fault+0x7f sys/uvm/uvm_fault.c:524
pageflttrap(ffff800020e26a90,0) at pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221
kerntrap(ffff800020e26a90) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
pool_cache_get(ffffffff82660f40) at pool_cache_get+0x118 pool_cache_list_alloc sys/kern/subr_pool.c:1809 [inline]
pool_cache_get(ffffffff82660f40) at pool_cache_get+0x118 sys/kern/subr_pool.c:1879
pool_get(ffffffff82660f40,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_get(2,3) at m_get+0x4c sys/kern/uipc_mbuf.c:250
sbappendaddr(fffffd806f6d4000,fffffd806f6d4088,ffffffff8229d968,fffffd806b860e00,0) at sbappendaddr+0x2e9 sys/kern/uipc_socket2.c:804
rtm_sendup(fffffd806f6d4000,fffffd806b860e00,0) at rtm_sendup+0xef sys/net/rtsock.c:594
route_input(fffffd806b860e00,0,18) at route_input+0x489 sys/net/rtsock.c:572
rtm_addr(14,ffff800000a0e500) at rtm_addr+0x10b sys/net/rtsock.c:1751
nd6_dad_timer(ffff800000a0e500) at nd6_dad_timer+0x2f9 sys/netinet6/nd6_nbr.c:1244
timeout_run(ffff800000a24a30) at timeout_run+0xc4 timeout_sync_leave sys/kern/kern_timeout.c:184 [inline]
timeout_run(ffff800000a24a30) at timeout_run+0xc4 sys/kern/kern_timeout.c:490
softclock_thread(ffff800020e189c0) at softclock_thread+0x16a sys/kern/kern_timeout.c:580
end trace frame: 0x0, count: -19
ddb{0}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff800020e26570
rbx               0xffff800020e26620
rdx                             0x8b
rcx                              0x2
rax                              0x1
r8                0xffffffff81c97d9f    kprintf+0x16f
r9                               0x1
r10                              0x2
r11               0xcfe7f2c76d63f4d7
r12                     0x3000000008
r13               0xffff800020e26580
r14                            0x100
r15                              0x1
rip               0xffffffff81a9d458    db_enter+0x18
cs                               0x8
rflags                         0x246
rsp               0xffff800020e26560
ss                                 0
db_enter+0x18:  addq    $0x8,%rsp
ddb{0}> show proc
PROC (softclock) pid=382173 stat=onproc
    flags process=14000<NOZOMBIE,SYSTEM> proc=40000200<SYSTEM,CPUPEG>
    pri=0, usrpri=50, nice=20
    forw=0xffffffffffffffff, list=0xffff800020e19380,0xffff800020e18760
    process=0xffff800020e1a000 user=0xffff800020e22000, vmspace=0xffffffff8265cf60
    estcpu=0, cpticks=0, pctcpu=0.0
    user=0, sys=0, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 59858   39718  43268      0  2           0                syz-executor.1
 43268  489178  50748      0  3        0x82  nanosleep     syz-executor.1
 82740  130579  50748      0  3        0x82  piperd        syz-executor.0
 50748  292651  44419      0  3        0x82  kqread        syz-fuzzer
 50748  150020  44419      0  3   0x4000082  nanosleep     syz-fuzzer
 50748  364797  44419      0  3   0x4000082  thrsleep      syz-fuzzer
 50748  506231  44419      0  3   0x4000082  thrsleep      syz-fuzzer
 50748  173788  44419      0  3   0x4000082  thrsleep      syz-fuzzer
 50748  344389  44419      0  3   0x4000082  thrsleep      syz-fuzzer
 50748  450336  44419      0  3   0x4000082  thrsleep      syz-fuzzer
 50748  359069  44419      0  3   0x4000082  thrsleep      syz-fuzzer
 50748  447653  44419      0  3   0x4000082  thrsleep      syz-fuzzer
 50748  261401  44419      0  7   0x4000002                syz-fuzzer
 44419  335778  96039      0  3    0x10008a  pause         ksh
 96039  389038    807      0  3        0x92  select        sshd
 32207  226760      1      0  3    0x100083  ttyin         getty
   807  406186      1      0  3        0x80  select        sshd
 99049  302559  68074     74  3    0x100092  bpf           pflogd
 68074  126058      1      0  3        0x80  netio         pflogd
 56155   31602  15808     73  3    0x100090  kqread        syslogd
 15808   27771      1      0  3    0x100082  netio         syslogd
 78050  311625      1     77  3    0x100090  poll          dhclient
 44405  296246      1      0  3        0x80  poll          dhclient
 96084    6100      0      0  3     0x14200  bored         smr
 33913  200350      0      0  2     0x14200                zerothread
 18254   72374      0      0  3     0x14200  aiodoned      aiodoned
 24813    3513      0      0  3     0x14200  syncer        update
 88921  440048      0      0  3     0x14200  cleaner       cleaner
 52518  282209      0      0  3     0x14200  reaper        reaper
 33049  512459      0      0  3     0x14200  pgdaemon      pagedaemon
 20268   22259      0      0  3     0x14200  bored         crynlk
  6123  392152      0      0  3     0x14200  bored         crypto
 42194  360140      0      0  3  0x40014200  acpi0         acpi0
 52262  241693      0      0  3  0x40014200                idle1
 70750  122461      0      0  3     0x14200  bored         softnet
 48760  337295      0      0  3     0x14200  bored         systqmp
 47661  363273      0      0  3     0x14200  bored         systq
*49690  382173      0      0  7  0x40014200                softclock
 49749  489347      0      0  3  0x40014200                idle0
     1  197911      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex mbufpl r = 0 (0xffffffff82661038)
#0  witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0  witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1  mtx_enter_try+0x102
#2  pool_cache_get+0xa3 pl_enter_try sys/kern/subr_pool.c:109 [inline]
#2  pool_cache_get+0xa3 pool_list_enter sys/kern/subr_pool.c:1789 [inline]
#2  pool_cache_get+0xa3 pool_cache_list_alloc sys/kern/subr_pool.c:1806 [inline]
#2  pool_cache_get+0xa3 sys/kern/subr_pool.c:1879
#3  pool_get+0x91 sys/kern/subr_pool.c:572
#4  m_get+0x4c sys/kern/uipc_mbuf.c:250
#5  sbappendaddr+0x2e9 sys/kern/uipc_socket2.c:804
#6  rtm_sendup+0xef sys/net/rtsock.c:594
#7  route_input+0x489 sys/net/rtsock.c:572
#8  rtm_addr+0x10b sys/net/rtsock.c:1751
#9  nd6_dad_timer+0x2f9 sys/netinet6/nd6_nbr.c:1244
#10 timeout_run+0xc4 timeout_sync_leave sys/kern/kern_timeout.c:184 [inline]
#10 timeout_run+0xc4 sys/kern/kern_timeout.c:490
#11 softclock_thread+0x16a sys/kern/kern_timeout.c:580
#12 proc_trampoline+0x1c
Process 49690 (softclock) thread 0xffff800020e189c0 (382173)
exclusive rwlock netlock r = 0 (0xffffffff82489288)
#0  witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0  witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1  nd6_dad_timer+0x34 sys/netinet6/nd6_nbr.c:1170
#2  timeout_run+0xc4 timeout_sync_leave sys/kern/kern_timeout.c:184 [inline]
#2  timeout_run+0xc4 sys/kern/kern_timeout.c:490
#3  softclock_thread+0x16a sys/kern/kern_timeout.c:580
#4  proc_trampoline+0x1c
shared rwlock timeout r = 0 (0xffffffff824b76b0)
#0  witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0  witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1  timeout_run+0xb9 sys/kern/kern_timeout.c:489
#2  softclock_thread+0x16a sys/kern/kern_timeout.c:580
#3  proc_trampoline+0x1c
exclusive kernel_lock &kernel_lock r = 2 (0xffffffff82673698)
#0  witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0  witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1  __mp_acquire_count+0x51 sys/kern/kern_lock.c:227
#2  mi_switch+0x392 sys/kern/sched_bsd.c:435
#3  sleep_finish+0x113 sys/kern/kern_synch.c:418
#4  softclock_thread+0x103 sys/kern/kern_timeout.c:575
#5  proc_trampoline+0x1c
exclusive mutex mbufpl r = 0 (0xffffffff82661038)
#0  witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0  witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1  mtx_enter_try+0x102
#2  pool_cache_get+0xa3 pl_enter_try sys/kern/subr_pool.c:109 [inline]
#2  pool_cache_get+0xa3 pool_list_enter sys/kern/subr_pool.c:1789 [inline]
#2  pool_cache_get+0xa3 pool_cache_list_alloc sys/kern/subr_pool.c:1806 [inline]
#2  pool_cache_get+0xa3 sys/kern/subr_pool.c:1879
#3  pool_get+0x91 sys/kern/subr_pool.c:572
#4  m_get+0x4c sys/kern/uipc_mbuf.c:250
#5  sbappendaddr+0x2e9 sys/kern/uipc_socket2.c:804
#6  rtm_sendup+0xef sys/net/rtsock.c:594
#7  route_input+0x489 sys/net/rtsock.c:572
#8  rtm_addr+0x10b sys/net/rtsock.c:1751
#9  nd6_dad_timer+0x2f9 sys/netinet6/nd6_nbr.c:1244
#10 timeout_run+0xc4 timeout_sync_leave sys/kern/kern_timeout.c:184 [inline]
#10 timeout_run+0xc4 sys/kern/kern_timeout.c:490
#11 softclock_thread+0x16a sys/kern/kern_timeout.c:580
#12 proc_trampoline+0x1c
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf  9487   6404K    6407K  78643K     10586        0
            pcb    13      8K       8K  78643K        23        0
         rtable   105      3K       3K  78643K       208        0
         ifaddr    53     11K      12K  78643K        57        0
       counters    43     33K      33K  78643K        43        0
       ioctlops     0      0K       4K  78643K      1469        0
            iov     0      0K      12K  78643K        14        0
          mount     1      1K       1K  78643K         1        0
         vnodes  1217     77K      77K  78643K      1227        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     2      1K       5K  78643K         3        0
         VM map     2      1K       1K  78643K         2        0
            sem     5      0K       0K  78643K         6        0
        dirhash    12      2K       2K  78643K        12        0
           ACPI  1824    197K     290K  78643K     13058        0
      file desc     5     13K      25K  78643K        51        0
           proc    59     63K      83K  78643K       445        0
        subproc    32      2K       2K  78643K        34        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
       in_multi    33      2K       2K  78643K        33        0
    ether_multi     1      0K       0K  78643K         2        0
            mrt     0      0K       0K  78643K         3        0
    ISOFS mount     1     32K      32K  78643K         1        0
  MSDOSFS mount     1     16K      16K  78643K         1        0
           ttys    31    148K     148K  78643K        31        0
           exec     0      0K       1K  78643K       207        0
        pagedep     1      8K       8K  78643K         1        0
       inodedep     1     32K      32K  78643K         1        0
         newblk     1      0K       0K  78643K         1        0
        VM swap     7     26K      26K  78643K         7        0
       UVM amap   111     22K      22K  78643K      1071        0
       UVM aobj     8      2K       2K  78643K         8        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
            NDP     9      0K       0K  78643K        12        0
           temp    75   3040K    3104K  78643K      2052        0
         kqueue     3      4K       8K  78643K         5        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
arp         64        6    0        0     1     0     1     1     0     8    0
plcache    128       20    0        0     1     0     1     1     0     8    0
rtpcb       80       25    0       23     1     0     1     1     0     8    0
rtentry    112       46    0        2     2     0     2     2     0     8    0
unpcb      120       43    0       33     1     0     1     1     0     8    0
syncache   264        4    0        4     1     1     0     1     0     8    0
tcpqe       32      439    0      439     1     0     1     1     0     8    1
tcpcb      544       16    0       12     1     0     1     1     0     8    0
inpcb      280       59    0       52     1     0     1     1     0     8    0
rttmr       72        1    0        1     1     0     1     1     0     8    1
nd6         48        6    0        0     1     0     1     1     0     8    0
pkpcb       40        2    0        2     1     0     1     1     0     8    1
swfcl       56        2    0        0     1     0     1     1     0     8    0
pfosfp      40      846    0      423     5     0     5     5     0     8    0
pfosfpen   112     1428    0      714    21     0    21    21     0     8    0
pfstitem    24       14    0        0     1     0     1     1     0     8    0
pfstkey    112       14    0        0     1     0     1     1     0     8    0
pfstate    328       14    0        0     2     0     2     2     0     8    0
pfrule     1360      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      188    0        0    12     0    12    12     0     8    0
art_table   32      189    0        0     2     0     2     2     0     8    0
art_node    16       45    0        5     1     0     1     1     0     8    0
semapl     112        4    0        1     1     0     1     1     0     8    0
shmpl      112        6    0        0     1     0     1     1     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256     1459    0       53    89     0    89    89     0     8    0
ffsino     272     1459    0       53    94     0    94    94     0     8    0
nchpl      144     1708    0      101    60     0    60    60     0     8    0
uvmvnodes   72     1505    0        0    28     0    28    28     0     8    0
vnodes     208     1505    0        0    80     0    80    80     0     8    0
namei      1024    4443    0     4443     1     0     1     1     0     8    1
percpumem   16       32    0        0     1     0     1     1     0     8    0
scxspl     192     4328    0     4328     2     1     1     2     0     8    1
plimitpl   152       17    0        9     1     0     1     1     0     8    0
sigapl     424      266    0      235     4     0     4     4     0     8    0
futexpl     56      382    0      382     1     0     1     1     0     8    1
knotepl    112       63    0       44     1     0     1     1     0     8    0
kqueuepl   144        8    0        6     1     0     1     1     0     8    0
pipelkpl    48       81    0       71     1     0     1     1     0     8    0
pipepl     120      162    0      143     1     0     1     1     0     8    0
fdescpl    496      251    0      235     3     0     3     3     0     8    0
filepl       0     1261    0     1161     5     0     5     5     0     8    1
lockfpl    104       17    0       16     1     0     1     1     0     8    0
lockfspl    48        8    0        7     1     0     1     1     0     8    0
sessionpl  112       18    0        7     1     0     1     1     0     8    0
pgrppl      48       18    0        7     1     0     1     1     0     8    0
ucredpl     96       69    0       60     1     0     1     1     0     8    0
zombiepl   144      235    0      235     1     0     1     1     0     8    1
processpl  984      266    0      235     5     0     5     5     0     8    1
procpl     624      300    0      260     4     0     4     4     0     8    0
sockpl     400      129    0      110     3     0     3     3     0     8    1
mcl64k     65536      4    0        0     1     0     1     1     0     8    0
mcl16k     16384      1    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       2    0        0     1     0     1     1     0     8    0
mcl2k      2048     184    0        0    22     0    22    22     0     8    0
mtagpl      80        1    0        0     1     0     1     1     0     8    0
mbufpl     256      211    0        0    13     0    13    13     0     8    0
bufpl      280     3323    0      134   228     0   228   228     0     8    0
anonpl      16    37460    0    23606    57     1    56    56     0   124    0
amapchunkpl 152    1159    0     1031     8     0     8     8     0   158    1
amappl16   192      946    0      203    38     0    38    38     0     8    0
amappl15   184        2    0        0     1     0     1     1     0     8    0
amappl14   176       35    0       26     1     0     1     1     0     8    0
amappl13   168       25    0       24     1     0     1     1     0     8    0
amappl12   160        7    0        3     1     0     1     1     0     8    0
amappl11   152       54    0       38     1     0     1     1     0     8    0
amappl10   144       16    0       13     1     0     1     1     0     8    0
amappl9    136      398    0      395     1     0     1     1     0     8    0
amappl8    128      344    0      317     1     0     1     1     0     8    0
amappl7    120      124    0      113     1     0     1     1     0     8    0
amappl6    112       25    0       20     1     0     1     1     0     8    0
amappl5    104      146    0      130     1     0     1     1     0     8    0
amappl4     96      490    0      463     1     0     1     1     0     8    0
amappl3     88       98    0       93     1     0     1     1     0     8    0
amappl2     80     1005    0      941     2     0     2     2     0     8    0
amappl1     72    15785    0    15349    23     6    17    18     0     8    7
amappl      80      550    0      510     1     0     1     1     0    84    0
dma4096    4096       1    0        1     1     1     0     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      64        7    0        0     1     0     1     1     0     8    0
uaddrrnd    24      251    0      235     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24      251    0      235     1     0     1     1     0     8    0
vmmpekpl   168     6011    0     5982     2     0     2     2     0     8    0
vmmpepl    168    37454    0    35599   108     4   104   104     0   357   21
vmsppl     368      250    0      235     2     0     2     2     0     8    0
pdppl      4096     510    0      470     6     0     6     6     0     8    0
pvpl        32   135999    0   119035   138     0   138   138     0   265    0
pmappl     232      250    0      235     2     0     2     2     0     8    1
extentpl    40       53    0       36     1     0     1     1     0     8    0
phpool     112      259    0        3     8     0     8     8     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8220d011) at panic+0x15c sys/kern/subr_prf.c:207
witness_checkorder(ffffffff8265cf78,1,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821
rw_enter_read(ffffffff8265cf68) at rw_enter_read+0x66 sys/kern/kern_rwlock.c:111
uvmfault_lookup(ffff800020e268f8,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1448
uvm_fault(ffffffff8265cf60,100000000,0,2) at uvm_fault+0x7f sys/uvm/uvm_fault.c:524
pageflttrap(ffff800020e26a90,0) at pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221
kerntrap(ffff800020e26a90) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
pool_cache_get(ffffffff82660f40) at pool_cache_get+0x118 pool_cache_list_alloc sys/kern/subr_pool.c:1809 [inline]
pool_cache_get(ffffffff82660f40) at pool_cache_get+0x118 sys/kern/subr_pool.c:1879
pool_get(ffffffff82660f40,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_get(2,3) at m_get+0x4c sys/kern/uipc_mbuf.c:250
sbappendaddr(fffffd806f6d4000,fffffd806f6d4088,ffffffff8229d968,fffffd806b860e00,0) at sbappendaddr+0x2e9 sys/kern/uipc_socket2.c:804
rtm_sendup(fffffd806f6d4000,fffffd806b860e00,0) at rtm_sendup+0xef sys/net/rtsock.c:594
route_input(fffffd806b860e00,0,18) at route_input+0x489 sys/net/rtsock.c:572
rtm_addr(14,ffff800000a0e500) at rtm_addr+0x10b sys/net/rtsock.c:1751
nd6_dad_timer(ffff800000a0e500) at nd6_dad_timer+0x2f9 sys/netinet6/nd6_nbr.c:1244
timeout_run(ffff800000a24a30) at timeout_run+0xc4 timeout_sync_leave sys/kern/kern_timeout.c:184 [inline]
timeout_run(ffff800000a24a30) at timeout_run+0xc4 sys/kern/kern_timeout.c:490
softclock_thread(ffff800020e189c0) at softclock_thread+0x16a sys/kern/kern_timeout.c:580
end trace frame: 0x0, count: -19
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x1a:        addq    $0x8,%rsp
x86_ipi_db(ffff800020e00ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
end of kernel
end trace frame: 0xc000515b10, count: 12
ddb{1}> trace
x86_ipi_db(ffff800020e00ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
end of kernel
end trace frame: 0xc000515b10, count: -3

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-openbsd-multicore 2020/05/18 11:21 openbsd 299b5045cb77 24d91142 .config console log report
ci-openbsd-multicore 2020/05/15 06:36 openbsd 44ee5a713b5c 2d572622 .config console log report
ci-openbsd-multicore 2020/04/27 09:26 openbsd 1a46f25785af 6e85fc25 .config console log report
* Struck through repros no longer work on HEAD.