syzbot


assert "nlevel >= IPL_NONE" failed in intr.c (3)

Status: fixed on 2025/06/14 15:09
Reported-by: syzbot+74f8141966171d61a0ab@syzkaller.appspotmail.com
Fix commit: b64faffc3616 run ifq_barrier against all ifqs in if_detach, not just if_snd.
First crash: 16d, last: 16d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd assert "nlevel >= IPL_NONE" failed in intr.c C 259 650d 659d 3/3 fixed on 2023/09/13 21:39
openbsd assert "nlevel >= IPL_NONE" failed in intr.c (2) 122 219d 476d 3/3 fixed on 2024/11/18 06:43

Sample crash report:
panic: kernel diagnostic assertion "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/intr.c", line 781
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*245945  56013      0     0x14000      0x200    1  softnet1
 316891  13736      0     0x14000 0x40000200    0  softclock
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8346d347) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff83415b99,ffffffff8335e4f5,30d,ffffffff833c132c) at __assert+0x29 sys/kern/subr_prf.c:-1
splraise(deadbeef) at splraise+0xbd sys/arch/amd64/amd64/intr.c:781
mtx_enter_try(ffff8000014e8608) at mtx_enter_try+0x97 sys/kern/kern_lock.c:276
mtx_enter(ffff8000014e8608) at mtx_enter+0x62 sys/kern/kern_lock.c:253
_bpf_mtap(ffff800000064c40,fffffd8068509300,ffff80002a216880,2) at _bpf_mtap+0x2fb sys/net/bpf.c:1410
bpf_mtap_af(ffff800000064c40,18,fffffd8068509300,2) at bpf_mtap_af+0x71 sys/net/bpf.c:1502
if_input_local(ffff800000b2c000,fffffd8068509300,18,ffffffff83970b58) at if_input_local+0xb2 sys/net/if.c:802
loinput(ffff800000b2c000,fffffd8068509300,ffffffff83970b58) at loinput+0x73 sys/net/if_loop.c:254
if_input_process(ffff800000b2c000,ffff80002a216a58,1) at if_input_process+0x1d5 sys/net/if.c:1012
ifiq_process(ffff800000b2d200) at ifiq_process+0xcd sys/net/ifq.c:874
taskq_thread(ffff80000002c100) at taskq_thread+0x157 sys/kern/kern_task.c:446
end trace frame: 0x0, count: 2
https://www.openbsd.org/ddb.html describes the minimum info required in bug
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ddb{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: kernel diagnostic assertion "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/intr.c", line 781
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8346d347) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff83415b99,ffffffff8335e4f5,30d,ffffffff833c132c) at __assert+0x29 sys/kern/subr_prf.c:-1
splraise(deadbeef) at splraise+0xbd sys/arch/amd64/amd64/intr.c:781
mtx_enter_try(ffff8000014e8608) at mtx_enter_try+0x97 sys/kern/kern_lock.c:276
mtx_enter(ffff8000014e8608) at mtx_enter+0x62 sys/kern/kern_lock.c:253
_bpf_mtap(ffff800000064c40,fffffd8068509300,ffff80002a216880,2) at _bpf_mtap+0x2fb sys/net/bpf.c:1410
bpf_mtap_af(ffff800000064c40,18,fffffd8068509300,2) at bpf_mtap_af+0x71 sys/net/bpf.c:1502
if_input_local(ffff800000b2c000,fffffd8068509300,18,ffffffff83970b58) at if_input_local+0xb2 sys/net/if.c:802
loinput(ffff800000b2c000,fffffd8068509300,ffffffff83970b58) at loinput+0x73 sys/net/if_loop.c:254
if_input_process(ffff800000b2c000,ffff80002a216a58,1) at if_input_process+0x1d5 sys/net/if.c:1012
ifiq_process(ffff800000b2d200) at ifiq_process+0xcd sys/net/ifq.c:874
taskq_thread(ffff80000002c100) at taskq_thread+0x157 sys/kern/kern_task.c:446
end trace frame: 0x0, count: -13
ddb{1}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff80002a216610
rbx               0xffff8000299dedd7
rdx                                0
rcx               0xffff8000ffffecd0
rax               0xffff8000299ddff0
r8                 0x101010101010101
r9                0x8080808080808080
r10                0x715cb15cae11131
r11               0x5beb0657ddf7e064
r12               0xffff8000299debd8
r13                                0
r14                                0
r15                              0x1
rip               0xffffffff81788ae5    db_enter+0x25
cs                               0x8
rflags                         0x246
rsp               0xffff80002a216600
ss                              0x10
db_enter+0x25:  addq    $0x8,%rsp
ddb{1}> show proc
PROC (softnet1) tid=245945 pid=56013 tcnt=1 stat=onproc
    flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
    runpri=32, usrpri=50, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff8000ffffea40,0xffff8000fffff200
    process=0xffff8000ffff8e88 user=0xffff80002a211000, vmspace=0xffffffff8397aa90
    estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 65938   87177  58804      0  2           0                syz-executor
 65938  280259  58804      0  2   0x4000000                syz-executor
 14761  364018  75429      0  2           0                syz-executor
 14761   78828  75429      0  2   0x4000000                syz-executor
 39127  350532  52949      0  2           0                syz-executor
 39127  369971  52949      0  2   0x4000000                syz-executor
 76208    7627  60935      0  2           0                syz-executor
 76208  437942  60935      0  3   0x4000080  sbwait        syz-executor
 76208  429956  60935      0  3   0x4000000  biowait       syz-executor
 67164  266419  75857      0  3        0x80  nanoslp       syz-executor
 67164   69416  75857      0  3   0x4000080  fsleep        syz-executor
 67164    4716  75857      0  3   0x4000080  fsleep        syz-executor
 67164  429844  75857      0  3   0x4000080  sbwait        syz-executor
  2342  347232  41958      0  3        0x80  nanoslp       syz-executor
  2342  312806  41958      0  3   0x4000080  kqread        syz-executor
  2342  172681  41958      0  3   0x4000080  fsleep        syz-executor
 36432  100693  39172      0  3   0x1000080  nanoslp       syz-executor
 36432  319101  39172      0  3   0x5000080  fsleep        syz-executor
 36432  107479  39172      0  3   0x5000080  sbwait        syz-executor
 36432  212646  39172      0  3   0x5000080  sbwait        syz-executor
 75857   71318  78072      0  3        0x82  nanoslp       syz-executor
  6873   56175      1      0  3    0x100083  ttyin         getty
 39172  323548  78072      0  3        0x82  nanoslp       syz-executor
 41958  334466  78072      0  3        0x82  nanoslp       syz-executor
 15791   83623  78072      0  3        0x82  nanoslp       syz-executor
 52949  511489  78072      0  2       0xc82                syz-executor
 57358  131878      0      0  3     0x14280  nfsidl        nfsio
 45054  449613      0      0  3     0x14280  nfsidl        nfsio
  8993  522804      0      0  3     0x14280  nfsidl        nfsio
  5274  222205      0      0  3     0x14280  nfsidl        nfsio
 29811   38935      0      0  3     0x14280  nfsidl        nfsio
 70808  381534      0      0  3     0x14280  nfsidl        nfsio
 70489  308712      0      0  3     0x14280  nfsidl        nfsio
 63222   25872      0      0  3     0x14280  nfsidl        nfsio
 64078  376703      0      0  3     0x14280  nfsidl        nfsio
 73613  435427      0      0  3     0x14280  nfsidl        nfsio
 13125  274329      0      0  3     0x14280  nfsidl        nfsio
 79001   72416      0      0  3     0x14280  nfsidl        nfsio
 79008  115727      0      0  3     0x14280  nfsidl        nfsio
 88158  378326      0      0  3     0x14280  nfsidl        nfsio
 15642  469173      0      0  3     0x14280  nfsidl        nfsio
 18687  255840      0      0  3     0x14280  nfsidl        nfsio
 39641  352363      0      0  3     0x14280  nfsidl        nfsio
 88599  348307      0      0  3     0x14280  nfsidl        nfsio
 73424  425328      0      0  3     0x14280  nfsidl        nfsio
 53809  391810      0      0  3     0x14280  nfsidl        nfsio
 75429  106701  78072      0  2       0xc82                syz-executor
  3909  127590      0      0  3     0x14200  bored         sosplice
 60935  340867  78072      0  3        0x82  nanoslp       syz-executor
 58804  185765  78072      0  3        0x82  nanoslp       syz-executor
 78072  381684  47505      0  3        0x82  kqread        syz-executor
 47505  195597  48845      0  3    0x10008a  sigsusp       ksh
 48845  241614  98663      0  3        0x98  kqread        sshd-session
 98663  221647  20011      0  3        0x92  kqread        sshd-session
 20011  315313      1      0  3        0x88  kqread        sshd
 63259   77566  81051     74  3   0x1100092  bpf           pflogd
 81051   14656      1      0  3        0x80  sbwait        pflogd
 96918  171882  98304     73  3   0x1100090  kqread        syslogd
 98304  513478      1      0  3    0x100082  sbwait        syslogd
 41891  218081      1      0  3    0x100080  kqread        resolvd
 96994  212761  97524     77  3    0x100092  kqread        dhcpleased
 29950  340743  97524     77  3    0x100092  kqread        dhcpleased
 97524   50495      1      0  3        0x80  kqread        dhcpleased
 90238  113992      0      0  3     0x14200  bored         smr
 56769  454677      0      0  2     0x14200                zerothread
 56814  315538      0      0  3     0x14200  aiodoned      aiodoned
  3733  439187      0      0  3     0x14200  syncer        update
 97123  164950      0      0  3     0x14200  cleaner       cleaner
 83887  204544      0      0  3     0x14200  reaper        reaper
 52290  310040      0      0  3     0x14200  pgdaemon      pagedaemon
 65955  315724      0      0  3     0x14200  bored         viomb
 47258  270162      0      0  3  0x40014200  acpi0         acpi0
   770  207953      0      0  3  0x40014200                idle1
 17212  108403      0      0  3     0x14200  bored         softnet3
 66265  130756      0      0  3     0x14200  bored         softnet2
*56013  245945      0      0  7     0x14200                softnet1
 96966  403320      0      0  3     0x14200  bored         softnet0
 95106  451150      0      0  3     0x14200  bored         systqmp
 17049  461008      0      0  3     0x14200  bored         systq
 34926  505141      0      0  3     0x14200  tmoslp        softclockmp
 13736  316891      0      0  7  0x40014200                softclock
 52608  175894      0      0  3  0x40014200                idle0
     1  482814      0      0  3        0x82  wait          init
     0       0     -1      0  3  0x10010200  scheduler     swapper
ddb{1}> show all locks
Process 14761 (syz-executor) thread 0xffff8000ffff0f80 (78828)
exclusive rwlock vmmaplk r = 0 (0xfffffd806c0124e0)
#0  witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5bb sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310
#2  vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168
#3  uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1918
#4  uvm_fault_check+0x8a5 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline]
#4  uvm_fault_check+0x8a5 sys/uvm/uvm_fault.c:784
#5  uvm_fault+0x106 sys/uvm/uvm_fault.c:677
#6  upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
#7  usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
#8  recall_trap+0x8
Process 39127 (syz-executor) thread 0xffff8000ffff1210 (369971)
exclusive rrwlock inode r = 0 (0xfffffd806c7d70e0)
#0  witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5bb sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0xc6 sys/kern/kern_rwlock.c:605
#3  VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527
#4  vn_lock+0xa4 sys/kern/vfs_vnops.c:570
#5  vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
#6  namei+0x7aa sys/kern/vfs_lookup.c:250
#7  vn_open+0x1f4 sys/kern/vfs_vnops.c:107
#8  doopenat+0x32e sys/kern/vfs_syscalls.c:1137
#9  syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#9  syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579
#10 Xsyscall+0x128
Process 76208 (syz-executor) thread 0xffff80003c4554a8 (429956)
exclusive rrwlock inode r = 0 (0xfffffd806c12cd00)
#0  witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5bb sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0xc6 sys/kern/kern_rwlock.c:605
#3  VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527
#4  vn_lock+0xa4 sys/kern/vfs_vnops.c:570
#5  ufs_link+0x87 sys/ufs/ufs/ufs_vnops.c:619
#6  VOP_LINK+0xfa sys/kern/vfs_vops.c:355
#7  dolinkat+0x2fc sys/kern/vfs_syscalls.c:1756
#8  syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0xb08 sys/arch/amd64/amd64/trap.c:579
#9  Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806e074778)
#0  witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5bb sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0xc6 sys/kern/kern_rwlock.c:605
#3  VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527
#4  vn_lock+0xa4 sys/kern/vfs_vnops.c:570
#5  vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
#6  namei+0x7aa sys/kern/vfs_lookup.c:250
#7  dolinkat+0x194 sys/kern/vfs_syscalls.c:1735
#8  syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0xb08 sys/arch/amd64/amd64/trap.c:579
#9  Xsyscall+0x128
Process 56013 (softnet1) thread 0xffff8000ffffecd0 (245945)
shared rwlock netlock r = 0 (0xffffffff8382b4a0)
#0  witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5bb sys/kern/subr_witness.c:1160
#1  rw_do_enter_read+0x36e sys/kern/kern_rwlock.c:397
#2  if_input_process+0x17f sys/net/if.c:1012
#3  ifiq_process+0xcd sys/net/ifq.c:874
#4  taskq_thread+0x157 sys/kern/kern_task.c:446
#5  proc_trampoline+0x10
shared rwlock softnet1 r = 0 (0xffff80000002c178)
#0  witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5bb sys/kern/subr_witness.c:1160
#1  taskq_thread+0x12a sys/kern/kern_task.c:442
#2  proc_trampoline+0x10
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10243  11184K   12476K 166960K     15362        0
            pcb    18     14K      29K 166960K       452        0
         rtable   232     13K      14K 166960K       733        0
             pf    43     19K      22K 166960K       208        0
         ifaddr    41      7K       9K 166960K       143        0
        ifgroup    60      2K       3K 166960K       245        0
         sysctl     4      1K       9K 166960K        17        0
       counters    70     37K      37K 166960K       236        0
       ioctlops     0      0K       4K 166960K      1970        0
            iov     0      0K      28K 166960K       155        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1553     98K      98K 166960K      3791        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K       9K 166960K        40        0
         VM map     2      1K       1K 166960K         2        0
            sem    19     17K      17K 166960K        38        0
        dirhash    12      2K       3K 166960K        33        0
           ACPI  1692    195K     286K 166960K     12470        0
      file desc    18     65K      89K 166960K      2048        0
          sigio     1      0K       0K 166960K       134        0
           proc    77    103K     128K 166960K       961        0
        subproc    72      4K       4K 166960K       136        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     0      0K       0K 166960K       365        0
       in_multi    91      6K       7K 166960K       223        0
    ether_multi     1      0K       0K 166960K        10        0
            mrt     2      0K       0K 166960K        10        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys   217    970K     970K 166960K       217        0
           exec     0      0K       1K 166960K       739        0
   fusefs mount     1     32K      32K 166960K         1        0
     pfkey data     0      0K       0K 166960K         5        0
            tdb     3      0K       0K 166960K         3        0
        VM swap     8     62K      64K 166960K        10        0
       UVM amap   261    168K     182K 166960K     21049        0
       UVM aobj    56      6K       6K 166960K        62        0
     pinsyscall    43     86K     102K 166960K      3354        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K       111        0
            NDP    13      0K       2K 166960K       101        0
           temp    80   8696K    8824K 166960K     89158        0
         kqueue    15     22K      30K 166960K       415        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      302    0      234     5     2     3     3     0     8    0
rtentry    176      223    0      130     6     0     6     6     0     8    0
unpcb      144     1284    0     1261     8     7     1     4     0     8    0
syncache   336        3    0        3     1     1     0     1     0     8    0
tcpcb      808      595    0      589    17    16     1     7     0     8    0
arp        128       35    0       20     1     0     1     1     0     8    0
inpcb      328     2129    0     2116    29    22     7    12     0     8    5
nd6        144       55    0       27     2     0     2     2     0     8    0
pkpcb       40       87    0       87     4     3     1     1     0     8    1
kcovpl      48       15    0        7     1     0     1     1     0     8    0
mppekey    1024       2    0        2     2     1     1     1     0     8    1
ppxss      1192      57    0       56     3     2     1     1     0     8    0
pppxif     1504       9    0        9     3     2     1     2     0     8    1
pfstscr     40        1    0        1     1     1     0     1     0     8    0
pffrag     232       44    0       39     1     0     1     1     0   482    0
pffrnode    88       44    0       39     1     0     1     1     0     8    0
pffrent     40       84    0       79     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
pfrktable  1344       7    0        3     1     0     1     1     0     8    0
pfanchor   1288       4    0        1     1     0     1     1     0     8    0
pftag       88        3    0        0     1     0     1     1     0     8    0
pfstitem    24      164    0       66     1     0     1     1     0     8    0
pfstkey    128      169    0       69     4     0     4     4     0     8    0
pfstate    384      164    0       68    10     0    10    10     0     8    0
pfrule     1344      32    0       21     2     0     2     2     0     8    1
rttmr      136        2    0        2     2     1     1     1     0     8    1
art_heap8  4096       3    0        0     3     0     3     3     0     8    0
art_heap4  256      966    0      522    40     9    31    31     0     8    2
art_table   32      969    0      522     4     0     4     4     0     8    0
art_node    16      220    0      137     1     0     1     1     0     8    0
sysvmsgpl   40       26    0        5     1     0     1     1     0     8    0
semapl     112       31    0       14     1     0     1     1     0     8    0
shmpl      112       59    0        6     2     0     2     2     0     8    0
dirhash    1024      31    0       14     3     0     3     3     0     8    0
dino2pl    256     5135    0     3614    96     0    96    96     0     8    0
ffsino     288     5136    0     3614   109     0   109   109     0     8    0
nchpl      144     8040    0     7426    63    39    24    63     0     8    0
rtmask      32       12    0       12     4     4     0     1     0     8    0
uvmvnodes   80     3350    0        0    69     0    69    69     0     8    0
vnodes     216     3350    0        0   187     0   187   187     0     8    0
namei      1024   28112    0    28110     3     2     1     2     0     8    0
percpumem   16      133    0       83     1     0     1     1     0     8    0
pfiaddrpl  120        1    0        1     1     1     0     1     0     8    0
kstatmem   264      144    0      114     4     1     3     3     0     8    0
acpiwqpl    32        1    0        1     1     0     1     1     1     8    1
scsiplug    72       13    0       13     5     4     1     1     0     8    1
scxspl     216    26675    0    26674    15    13     2     8     1     8    1
plimitpl   152      388    0      369     1     0     1     1     0     8    0
sigapl     424     2370    0     2299    10     1     9     9     0     8    0
knotepl    120      553    0        0    17     0    17    17     0     8    0
kqueuepl   224      780    0      768     9     6     3     5     0     8    2
pipepl     336      453    0      426    10     2     8     8     0     8    5
fdescpl    520     2327    0     2295     3     0     3     3     0     8    0
filepl     160    15528    0    15229    29    13    16    18     0     8    3
lockfpl    104      840    0      835     2     1     1     2     0     8    0
lockfspl    48      315    0      311     1     0     1     1     0     8    0
sessionpl  144       33    0       24     1     0     1     1     0     8    0
pgrppl      48       77    0       60     1     0     1     1     0     8    0
ucredpl    104     2401    0     2387     1     0     1     1     0     8    0
zombiepl   144     3526    0     3525     1     0     1     1     0     8    0
processpl  1240    2370    0     2299     7     1     6     6     0     8    0
procpl     656     5783    0     5699     8     0     8     8     0     8    0
srpgc       96       19    0       19     4     3     1     1     0     8    1
sosppl     168        7    0        7     4     3     1     1     0     8    1
sockpl     728     3947    0     3841    36    26    10    18     0     8    0
mcl64k     65536      9    0        0     2     0     2     2     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
mcl9k      9216       1    0        0     1     0     1     1     0     8    0
mcl8k      8192       3    0        0     1     0     1     1     0     8    0
mcl4k      4096     121    0        0    15     0    15    15     0     8    0
mcl2k      2048      35    0        0     5     0     5     5     0     8    0
mtagpl      96      221    0        0     5     0     5     5     0     8    0
mbufpl     256     1183    0        0    73     0    73    73     0     8    0
bufpl      280     7405    0     1263   440     0   440   440     0     8    0
anonpl      32     7903    0        0    64     0    64    64     0   246    0
amapchunkpl 152   69977    0    69401    44    15    29    32     0   158    3
amappl16   200     5170    0     5128    36    30     6    15     0     8    1
amappl15   192       10    0        9     1     0     1     1     0     8    0
amappl14   184      131    0      118     1     0     1     1     0     8    0
amappl13   176        6    0        6     1     1     0     1     0     8    0
amappl12   168     3117    0     3085     3     1     2     2     0     8    0
amappl11   160       54    0       40     1     0     1     1     0     8    0
amappl10   152        6    0        5     2     1     1     1     0     8    0
amappl9    144      256    0      256     1     1     0     1     0     8    0
amappl8    136       22    0       19     1     0     1     1     0     8    0
amappl7    128      128    0      115     1     0     1     1     0     8    0
amappl6    120      242    0      239     1     0     1     1     0     8    0
amappl5    112      155    0      145     1     0     1     1     0     8    0
amappl4    104      349    0      328     1     0     1     1     0     8    0
amappl3     96    14348    0    14220     5     1     4     4     0     8    0
amappl2     88      765    0      703     2     0     2     2     0     8    0
amappl1     80    16476    0    15868    15     2    13    15     0     8    0
amappl      88    19932    0    19744     5     0     5     5     0    92    0
dma32768   32768      1    0        1     1     1     0     1     0     8    0
dma8192    8192       1    0        1     1     0     1     1     0     8    1
dma4096    4096       2    0        2     2     2     0     1     0     8    0
dma2048    2048       1    0        1     1     1     0     1     0     8    0
dma1024    1024       1    0        0     1     0     1     1     0     8    0
dma512     512        1    0        1     1     1     0     1     0     8    0
dma256     256        9    0        9     3     3     0     1     0     8    0
dma128     128      259    0      259     5     4     1     1     0     8    1
dma64       64        7    0        7     2     2     0     1     0     8    0
dma32       32        7    0        7     1     1     0     1     0     8    0
dma16       16       20    0       19     1     0     1     1     0     8    0
aobjpl      72       61    0        6     2     0     2     2     0     8    0
uaddrrnd    24     2327    0     2295     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     2327    0     2295     1     0     1     1     0     8    0
vmmpekpl   168    20150    0    20088     4     0     4     4     0     8    0
vmmpepl    168   147995    0   145900   112    18    94   101     0   357    1
vmsppl     480     2326    0     2295     6     1     5     5     0     8    0
rwobjpl     72    40846    0    36460    85     4    81    81     0     8    0
pdppl      4096    4661    0     4590   113    42    71    83     0     8    0
pvpl        32    16712    0        0   136     1   135   135     0   265    0
pmappl     256     2326    0     2295     3     0     3     3     0     8    0
extentpl    40       45    0       27     1     0     1     1     0     8    0
phpool     112      507    0       81    13     0    13    13     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
x86_ipi_db(ffffffff838aeff0) 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(ffffffff83a0c618) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:129 [inline]
__mp_lock(ffffffff83a0c618) at __mp_lock+0x192 sys/kern/kern_lock.c:160
intr_handler(ffff80002a1f7d80,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff83a0c618) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:129 [inline]
__mp_lock(ffffffff83a0c618) at __mp_lock+0x192 sys/kern/kern_lock.c:160
__mp_acquire_count(ffffffff83a0c618,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2da sys/kern/kern_synch.c:366
softclock_thread_run(ffffffff838185b8) at softclock_thread_run+0x79 sys/kern/kern_timeout.c:845
softclock_thread(ffff8000ffffe7b0) at softclock_thread+0x10a sys/kern/kern_timeout.c:867
end trace frame: 0x0, count: 4
ddb{0}> trace
x86_ipi_db(ffffffff838aeff0) 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(ffffffff83a0c618) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:129 [inline]
__mp_lock(ffffffff83a0c618) at __mp_lock+0x192 sys/kern/kern_lock.c:160
intr_handler(ffff80002a1f7d80,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff83a0c618) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:129 [inline]
__mp_lock(ffffffff83a0c618) at __mp_lock+0x192 sys/kern/kern_lock.c:160
__mp_acquire_count(ffffffff83a0c618,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2da sys/kern/kern_synch.c:366
softclock_thread_run(ffffffff838185b8) at softclock_thread_run+0x79 sys/kern/kern_timeout.c:845
softclock_thread(ffff8000ffffe7b0) at softclock_thread+0x10a sys/kern/kern_timeout.c:867
end trace frame: 0x0, count: -11
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8346d347) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff83415b99,ffffffff8335e4f5,30d,ffffffff833c132c) at __assert+0x29 sys/kern/subr_prf.c:-1
splraise(deadbeef) at splraise+0xbd sys/arch/amd64/amd64/intr.c:781
mtx_enter_try(ffff8000014e8608) at mtx_enter_try+0x97 sys/kern/kern_lock.c:276
mtx_enter(ffff8000014e8608) at mtx_enter+0x62 sys/kern/kern_lock.c:253
_bpf_mtap(ffff800000064c40,fffffd8068509300,ffff80002a216880,2) at _bpf_mtap+0x2fb sys/net/bpf.c:1410
bpf_mtap_af(ffff800000064c40,18,fffffd8068509300,2) at bpf_mtap_af+0x71 sys/net/bpf.c:1502
if_input_local(ffff800000b2c000,fffffd8068509300,18,ffffffff83970b58) at if_input_local+0xb2 sys/net/if.c:802
loinput(ffff800000b2c000,fffffd8068509300,ffffffff83970b58) at loinput+0x73 sys/net/if_loop.c:254
if_input_process(ffff800000b2c000,ffff80002a216a58,1) at if_input_process+0x1d5 sys/net/if.c:1012
ifiq_process(ffff800000b2d200) at ifiq_process+0xcd sys/net/ifq.c:874
taskq_thread(ffff80000002c100) at taskq_thread+0x157 sys/kern/kern_task.c:446
end trace frame: 0x0, count: 2
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8346d347) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff83415b99,ffffffff8335e4f5,30d,ffffffff833c132c) at __assert+0x29 sys/kern/subr_prf.c:-1
splraise(deadbeef) at splraise+0xbd sys/arch/amd64/amd64/intr.c:781
mtx_enter_try(ffff8000014e8608) at mtx_enter_try+0x97 sys/kern/kern_lock.c:276
mtx_enter(ffff8000014e8608) at mtx_enter+0x62 sys/kern/kern_lock.c:253
_bpf_mtap(ffff800000064c40,fffffd8068509300,ffff80002a216880,2) at _bpf_mtap+0x2fb sys/net/bpf.c:1410
bpf_mtap_af(ffff800000064c40,18,fffffd8068509300,2) at bpf_mtap_af+0x71 sys/net/bpf.c:1502
if_input_local(ffff800000b2c000,fffffd8068509300,18,ffffffff83970b58) at if_input_local+0xb2 sys/net/if.c:802
loinput(ffff800000b2c000,fffffd8068509300,ffffffff83970b58) at loinput+0x73 sys/net/if_loop.c:254
if_input_process(ffff800000b2c000,ffff80002a216a58,1) at if_input_process+0x1d5 sys/net/if.c:1012
ifiq_process(ffff800000b2d200) at ifiq_process+0xcd sys/net/ifq.c:874
taskq_thread(ffff80000002c100) at taskq_thread+0x157 sys/kern/kern_task.c:446
end trace frame: 0x0, count: -13

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/08 23:12 openbsd 394c376d8c51 4826c28e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore assert "nlevel >= IPL_NONE" failed in intr.c
* Struck through repros no longer work on HEAD.