syzbot


panic: unhandled af (5)

Status: upstream: reported on 2025/07/19 19:13
Reported-by: syzbot+4e05a18fbd663ba06161@syzkaller.appspotmail.com
First crash: 14d, last: 14d
Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd panic: unhandled af 2 C 21 2037d 2039d 3/3 fixed on 2020/01/09 12:20
openbsd panic: unhandled af (3) 2 syz 7 1851d 1860d 0/3 closed as invalid on 2020/10/03 07:42
openbsd panic: unhandled af (4) 2 syz 11 1288d 1318d 3/3 fixed on 2022/01/25 13:33
openbsd panic: unhandled af (2) 2 C 22 1863d 1888d 3/3 fixed on 2020/06/28 14:37

Sample crash report:
panic: unhandled af 18
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 496392  50326      0           0        0x1    0  syz-executor
*245423  18967      0         0x2          0    1  syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83429240) at panic+0x1e5 sys/kern/subr_prf.c:198
unhandled_af(12) at unhandled_af+0x1a sys/net/if.c:-1
if_output_tso(ffff800000039058,ffff80002a2a6d80,ffff8000014a0180,fffffd807a042790,5dc) at if_output_tso+0x241 sys/net/if.c:898
ip_output(fffffd80646adb00,0,fffffd806f4b6448,0,0,fffffd806f4b64e0,23886c75692c19ae) at ip_output+0x12aa sys/netinet/ip_output.c:437
tcp_output(ffff80000144a420) at tcp_output+0x3566 sys/netinet/tcp_output.c:1093
tcp_send(ffff800010fe16d0,fffffd8079df8900,0,0) at tcp_send+0x191 sys/netinet/tcp_usrreq.c:857
sosend(ffff800010fe16d0,0,ffff80002a2a71b8,0,0,80) at sosend+0x804 sys/kern/uipc_socket.c:-1
dofilewritev(ffff80002a2a87c8,3,ffff80002a2a71b8,0,ffff80002a2a7270) at dofilewritev+0x23c sys/kern/sys_generic.c:380
sys_write(ffff80002a2a87c8,ffff80002a2a7320,ffff80002a2a7270) at sys_write+0xa2 sys/kern/sys_generic.c:300
syscall(ffff80002a2a7320) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2a7320) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7364a03542d0, count: 3
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports.  Insufficient info makes it difficult to find and fix bugs.
ddb{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: unhandled af 18
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83429240) at panic+0x1e5 sys/kern/subr_prf.c:198
unhandled_af(12) at unhandled_af+0x1a sys/net/if.c:-1
if_output_tso(ffff800000039058,ffff80002a2a6d80,ffff8000014a0180,fffffd807a042790,5dc) at if_output_tso+0x241 sys/net/if.c:898
ip_output(fffffd80646adb00,0,fffffd806f4b6448,0,0,fffffd806f4b64e0,23886c75692c19ae) at ip_output+0x12aa sys/netinet/ip_output.c:437
tcp_output(ffff80000144a420) at tcp_output+0x3566 sys/netinet/tcp_output.c:1093
tcp_send(ffff800010fe16d0,fffffd8079df8900,0,0) at tcp_send+0x191 sys/netinet/tcp_usrreq.c:857
sosend(ffff800010fe16d0,0,ffff80002a2a71b8,0,0,80) at sosend+0x804 sys/kern/uipc_socket.c:-1
dofilewritev(ffff80002a2a87c8,3,ffff80002a2a71b8,0,ffff80002a2a7270) at dofilewritev+0x23c sys/kern/sys_generic.c:380
sys_write(ffff80002a2a87c8,ffff80002a2a7320,ffff80002a2a7270) at sys_write+0xa2 sys/kern/sys_generic.c:300
syscall(ffff80002a2a7320) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2a7320) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7364a03542d0, count: -12
ddb{1}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff80002a2a6b50
rbx               0xffff8000299dedd7
rdx                                0
rcx               0xffff80002a2a87c8
rax               0xffff8000299ddff0
r8                 0x101010101010101
r9                0x8080808080808080
r10               0x40fa3925d1e5fb5e
r11               0x82a951a26349e5fa
r12               0xffff8000299debd8
r13                                0
r14                                0
r15                              0x1
rip               0xffffffff81d50e95    db_enter+0x25
cs                               0x8
rflags                         0x246
rsp               0xffff80002a2a6b40
ss                              0x10
db_enter+0x25:  addq    $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor) tid=245423 pid=18967 tcnt=1 stat=onproc
    flags process=2<EXEC> proc=0
    runpri=64, usrpri=64, slppri=24, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff80002a2a8a58,0xffff80002a2a8548
    process=0xffff80002a2b1850 user=0xffff80002a2a2000, vmspace=0xfffffd800b0fb3d0
    estcpu=14, cpticks=4, pctcpu=0.24, user=2, sys=91, intr=12
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 59977  318624  32159      0  2         0x1                syz-executor
 59977  219726  32159      0  3   0x4000080  fsleep        syz-executor
 50326  496392  33257      0  7         0x1                syz-executor
 50326  432821  33257      0  3   0x4000080  fsleep        syz-executor
  5907  373470  44802      0  2           0                syz-executor
  5907   60252  44802      0  3   0x4000080  fsleep        syz-executor
  5907  400116  44802      0  3   0x4000080  fsleep        syz-executor
 80206  135843  76539      0  2           0                syz-executor
 80206  267241  76539      0  3   0x4000000  netlock       syz-executor
 80206  202417  76539      0  3   0x4000080  fsleep        syz-executor
 80206   79823  76539      0  3   0x4000080  fsleep        syz-executor
 36119   51614  12759      0  3        0x80  nanoslp       syz-executor
 36119  328864  12759      0  3   0x4000080  ttyin         syz-executor
 36119  309365  12759      0  3   0x4000080  fsleep        syz-executor
  6731   11951      0      0  3     0x14200  acct          acct
 96441  210564  18967      0  3         0x2  biowait       syz-executor
 32159  261664  18967      0  3        0x82  nanoslp       syz-executor
  4493  134360      0      0  3     0x14280  nfsidl        nfsio
 18623  214110      0      0  3     0x14280  nfsidl        nfsio
 13827  111567      0      0  3     0x14280  nfsidl        nfsio
 33502  414827      0      0  3     0x14280  nfsidl        nfsio
 26322  227995      0      0  3     0x14280  nfsidl        nfsio
 85976  103180      0      0  3     0x14280  nfsidl        nfsio
 74946  341010      0      0  3     0x14280  nfsidl        nfsio
 57524  502009      0      0  3     0x14280  nfsidl        nfsio
 14703  230985      0      0  3     0x14280  nfsidl        nfsio
    77  238548      0      0  3     0x14280  nfsidl        nfsio
 32258  503820      0      0  3     0x14280  nfsidl        nfsio
  8546  198951      0      0  3     0x14280  nfsidl        nfsio
 94984  258203      0      0  3     0x14280  nfsidl        nfsio
 26088   10182      0      0  3     0x14280  nfsidl        nfsio
 84319  344206      0      0  3     0x14280  nfsidl        nfsio
 24225  325722      0      0  3     0x14280  nfsidl        nfsio
  7658  451612      0      0  3     0x14280  nfsidl        nfsio
  1297  448747      0      0  3     0x14280  nfsidl        nfsio
 20039  441618      0      0  3     0x14280  nfsidl        nfsio
 30727  145910      0      0  3     0x14280  nfsidl        nfsio
 32413  147075      0      0  3     0x14200  bored         sosplice
 52484  478743      1      0  3    0x100083  ttyopn        getty
 33257  131047  18967      0  3        0x82  nanoslp       syz-executor
 76539  236662  18967      0  3        0x82  nanoslp       syz-executor
 50999  319006  18967      0  3         0x2  biowait       syz-executor
 12759  261478  18967      0  3        0x82  nanoslp       syz-executor
 71889  459625  18967      0  3         0x2  biowait       syz-executor
 44802   33011  18967      0  3        0x82  nanoslp       syz-executor
*18967  245423  83247      0  7         0x2                syz-executor
 83247  445945  92847      0  3    0x10008a  sigsusp       ksh
 92847  191196  61673      0  3        0x98  kqread        sshd-session
 61673   66566  11932      0  3        0x92  kqread        sshd-session
 11932   34781      1      0  3        0x88  kqread        sshd
 32225  198397  36424     74  3   0x1100092  bpf           pflogd
 36424  350187      1      0  3        0x80  sbwait        pflogd
 47817  390370  13135     73  3   0x1100090  kqread        syslogd
 13135  272315      1      0  3    0x100082  sbwait        syslogd
 74860   73938      1      0  3    0x100080  kqread        resolvd
 79130   42786  16824     77  3    0x100092  kqread        dhcpleased
 63056  479245  16824     77  3    0x100092  kqread        dhcpleased
 16824  108086      1      0  3        0x80  kqread        dhcpleased
 65184  223400      0      0  3     0x14200  bored         smr
 56503  407659      0      0  2     0x14200                zerothread
 76883  496050      0      0  3     0x14200  aiodoned      aiodoned
 23165  331769      0      0  3     0x14200  syncer        update
 49529   12078      0      0  3     0x14200  cleaner       cleaner
 34048   62667      0      0  3     0x14200  reaper        reaper
 60193  412003      0      0  3     0x14200  pgdaemon      pagedaemon
 28828  289842      0      0  3     0x14200  bored         viomb
 50080  432037      0      0  3  0x40014200  acpi0         acpi0
 83138  295839      0      0  3  0x40014200                idle1
 80424  235371      0      0  3     0x14200  bored         softnet7
 64126  412107      0      0  3     0x14200  bored         softnet6
 21088  133321      0      0  3     0x14200  bored         softnet5
 94108  413169      0      0  3     0x14200  bored         softnet4
 91826   98937      0      0  3     0x14200  bored         softnet3
 63908  430954      0      0  3     0x14200  bored         softnet2
 48420  246838      0      0  3     0x14200  bored         softnet1
 61365   89383      0      0  3     0x14200  bored         softnet0
 62672  300603      0      0  3     0x14200  smrbar        systqmp
 40559   62005      0      0  3     0x14200  bored         systq
 91290   60235      0      0  3     0x14200  tmoslp        softclockmp
 52844  350888      0      0  3  0x40014200  tmoslp        softclock
 48948  322395      0      0  3  0x40014200                idle0
     1  186147      0      0  3     0x80082  wait          init
     0       0     -1      0  3  0x10010200  scheduler     swapper
ddb{1}> show all locks
Process 96441 (syz-executor) thread 0xffff800037c11740 (210564)
exclusive rrwlock inode r = 0 (0xfffffd80696b02e0)
#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  vget+0x2bd sys/kern/vfs_subr.c:693
#6  ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7  ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8  ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478
#9  VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
#11 namei+0x7aa sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864
#13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806e0bf0b0)
#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  dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864
#8  syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0xb08 sys/arch/amd64/amd64/trap.c:748
#9  Xsyscall+0x128
Process 50999 (syz-executor) thread 0xffff8000ffff3c40 (319006)
exclusive rrwlock inode r = 0 (0xfffffd806eca3be0)
#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  ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline]
#4  ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159
#5  ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232
#6  ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393
#7  ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112
#8  VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394
#9  domkdirat+0x179 sys/kern/vfs_syscalls.c:3109
#10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80790840d8)
#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  domkdirat+0x8b sys/kern/vfs_syscalls.c:3094
#8  syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0xb08 sys/arch/amd64/amd64/trap.c:748
#9  Xsyscall+0x128
Process 71889 (syz-executor) thread 0xffff80002a2a9728 (459625)
exclusive rrwlock inode r = 0 (0xfffffd806f50d1e8)
#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  ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline]
#4  ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159
#5  ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232
#6  ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393
#7  ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112
#8  VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394
#9  domkdirat+0x179 sys/kern/vfs_syscalls.c:3109
#10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806cc88e50)
#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  domkdirat+0x8b sys/kern/vfs_syscalls.c:3094
#8  syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0xb08 sys/arch/amd64/amd64/trap.c:748
#9  Xsyscall+0x128
Process 18967 (syz-executor) thread 0xffff80002a2a87c8 (245423)
exclusive rwlock inet46 r = 0 (0xffff800010fe16f0)
#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  sosend+0x78e sys/kern/uipc_socket.c:-1
#3  dofilewritev+0x23c sys/kern/sys_generic.c:380
#4  sys_write+0xa2 sys/kern/sys_generic.c:300
#5  syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5  syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748
#6  Xsyscall+0x128
shared rwlock netlock r = 0 (0xffffffff838b8e60)
#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  solock_shared+0x6e sys/kern/uipc_socket2.c:343
#3  sosend+0x78e sys/kern/uipc_socket.c:-1
#4  dofilewritev+0x23c sys/kern/sys_generic.c:380
#5  sys_write+0xa2 sys/kern/sys_generic.c:300
#6  syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6  syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748
#7  Xsyscall+0x128
exclusive rwlock sbufsnd r = 0 (0xffff800010fe18a8)
#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  sblock+0xb7 sys/kern/uipc_socket2.c:536
#3  sosend+0x2e2 sys/kern/uipc_socket.c:627
#4  dofilewritev+0x23c sys/kern/sys_generic.c:380
#5  sys_write+0xa2 sys/kern/sys_generic.c:300
#6  syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6  syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748
#7  Xsyscall+0x128
Process 62672 (systqmp) thread 0xffff8000ffffe520 (300603)
shared rwlock systqmp r = 0 (0xffffffff83869278)
#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 10223  11029K   12477K 166960K     13095        0
            pcb    17     16K      21K 166960K       530        0
         rtable   160      7K       9K 166960K       445        0
             pf    33     17K      24K 166960K       103        0
         ifaddr    33      5K       7K 166960K        78        0
        ifgroup    47      2K       2K 166960K       110        0
         sysctl     4      1K       9K 166960K        81        0
       counters    64     36K      37K 166960K       114        0
       ioctlops     0      0K       4K 166960K      1668        0
            iov     1     12K      32K 166960K        74        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1529     96K      97K 166960K      2332        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     3      5K      13K 166960K        22        0
         VM map     2      1K       1K 166960K         2        0
            sem    12      0K       0K 166960K        44        0
        dirhash    12      2K       2K 166960K        27        0
           ACPI  1692    195K     286K 166960K     12470        0
      file desc    15     53K      89K 166960K      1052        0
          sigio     0      0K       0K 166960K        20        0
           proc    73     91K     115K 166960K       672        0
        subproc    72      4K       4K 166960K        90        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     0      0K       0K 166960K       107        0
       in_multi    65      4K       7K 166960K       152        0
    ether_multi     1      0K       0K 166960K        12        0
            mrt     2      0K       0K 166960K         7        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys   199    890K     890K 166960K       199        0
           exec     0      0K       1K 166960K       698        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   232    159K     178K 166960K     11767        0
       UVM aobj    41      6K       8K 166960K        42        0
     pinsyscall    40     80K     105K 166960K      2201        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       1K 166960K        48        0
            NDP    10      0K       2K 166960K        48        0
           temp    64   8680K    8804K 166960K     49938        0
         kqueue    13     20K      28K 166960K       196        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      134    0      131     2     1     1     2     0     8    0
rtentry    176      146    0       86     5     0     5     5     0     8    0
unpcb      144      739    0      720     9     5     4     4     0     8    3
syncache   336        6    0        6     2     2     0     1     0     8    0
tcpqe       32        1    0        1     1     1     0     1     0     8    0
tcpcb      736      346    0      341     8     6     2     7     0     8    1
arp        128       16    0        8     1     0     1     1     0     8    0
inpcb      328     1362    0     1352    25    17     8    15     0     8    7
nd6        144       28    0       17     1     0     1     1     0     8    0
pkpcb       40        2    0        2     2     2     0     1     0     8    0
kcovpl      48       10    0        2     1     0     1     1     0     8    0
ppxss      1192      15    0       15     5     4     1     1     0     8    1
pppxif     1504       4    0        4     3     2     1     1     0     8    1
pfstscr     40        1    0        1     1     1     0     1     0     8    0
pffrag     232       14    0        4     1     0     1     1     0   482    0
pffrnode    88       14    0        4     1     0     1     1     0     8    0
pffrent     40       21    0       11     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       1    0        1     1     1     0     1     0     8    0
pfstitem    24       77    0       23     1     0     1     1     0     8    0
pfstkey    128       78    0       24     2     0     2     2     0     8    0
pfstate    384       78    0       24     6     0     6     6     0     8    0
pfrule     1344      24    0       18     2     1     1     2     0     8    0
rttmr      136        1    0        1     1     1     0     1     0     8    0
art_heap8  4096       2    0        0     2     0     2     2     0     8    0
art_heap4  256      694    0      389    30     8    22    30     0     8    0
art_table   40      696    0      389     5     0     5     5     0     8    0
art_node    32      144    0       92     1     0     1     1     0     8    0
sysvmsgpl   40       15    0        9     2     1     1     1     0     8    0
semapl     112       40    0       30     1     0     1     1     0     8    0
shmpl      112       39    0        1     2     0     2     2     0     8    0
dirhash    1024      28    0       11     3     0     3     3     0     8    0
dino2pl    256     3288    0     1785    96     0    96    96     0     8    0
ffsino     288     3288    0     1785   109     0   109   109     0     8    0
nchpl      144     4757    0     3065    64     0    64    64     0     8    0
rtmask      32        1    0        1     1     1     0     1     0     8    0
uvmvnodes   80     3986    0        0    82     0    82    82     0     8    0
vnodes     216     3986    0        0   222     0   222   222     0     8    0
namei      1024   17782    0    17780     6     4     2     3     0     8    1
percpumem   16       72    0       25     1     0     1     1     0     8    0
kstatmem   264       60    0       36     4     2     2     3     0     8    0
scsiplug    72        6    0        6     3     2     1     1     0     8    1
scxspl     216    44370    0    44367    11    10     1     8     1     8    0
plimitpl   152      220    0      201     1     0     1     1     0     8    0
sigapl     424     1379    0     1306     9     0     9     9     0     8    0
knotepl    120      582    0        0    18     0    18    18     0     8    0
kqueuepl   224      369    0      360     5     4     1     3     0     8    0
pipepl     336      292    0      265    11     8     3     8     0     8    0
fdescpl    520     1332    0     1303     3     0     3     3     0     8    0
filepl     160     9396    0     9172    27    12    15    17     0     8    4
lockfpl    104      690    0      687     4     3     1     3     0     8    0
lockfspl    48      276    0      273     2     1     1     2     0     8    0
sessionpl  144       28    0       19     1     0     1     1     0     8    0
pgrppl      48       49    0       32     1     0     1     1     0     8    0
ucredpl    104     1402    0     1388     1     0     1     1     0     8    0
zombiepl   144     1650    0     1650     2     1     1     1     0     8    1
processpl  1240    1379    0     1306     6     0     6     6     0     8    0
procpl     656     3062    0     2980     9     0     9     9     0     8    0
sosppl     168        5    0        5     3     3     0     1     0     8    0
sockpl     728     2256    0     2224    38    27    11    18     0     8    7
mcl64k     65536      5    0        0     1     0     1     1     0     8    0
mcl16k     16384      2    0        0     1     0     1     1     0     8    0
mcl12k     12288      1    0        0     1     0     1     1     0     8    0
mcl9k      9216       1    0        0     1     0     1     1     0     8    0
mcl8k      8192       4    0        0     1     0     1     1     0     8    0
mcl4k      4096     131    0        0    17     0    17    17     0     8    0
mcl2k      2048      39    0        0     5     0     5     5     0     8    0
mtagpl      96       73    0        0     2     0     2     2     0     8    0
mbufpl     256      254    0        0    16     0    16    16     0     8    0
bufpl      280    19487    0    13345   441     1   440   440     0     8    0
anonpl      32    15254    0        0   123     0   123   123     0   246    0
amapchunkpl 152   39112    0    38630    53    29    24    35     0   158    2
amappl16   200     6344    0     6087    73    59    14    34     0     8    0
amappl15   192       30    0       30     2     2     0     1     0     8    0
amappl14   184      122    0      110     1     0     1     1     0     8    0
amappl13   176        4    0        4     1     1     0     1     0     8    0
amappl12   168     2011    0     1980     3     1     2     2     0     8    0
amappl11   160       53    0       38     1     0     1     1     0     8    0
amappl10   152        4    0        4     1     1     0     1     0     8    0
amappl9    144      251    0      251     1     1     0     1     0     8    0
amappl8    136       25    0       22     1     0     1     1     0     8    0
amappl7    128      111    0       99     1     0     1     1     0     8    0
amappl6    120      210    0      207     1     0     1     1     0     8    0
amappl5    112      132    0      122     1     0     1     1     0     8    0
amappl4    104      317    0      295     1     0     1     1     0     8    0
amappl3     96     7588    0     7484     4     0     4     4     0     8    0
amappl2     88      687    0      622     2     0     2     2     0     8    0
amappl1     80    12697    0    12103    16     1    15    15     0     8    0
amappl      88    10849    0    10692     5     0     5     5     0    92    0
dma32768   32768      1    0        1     1     1     0     1     0     8    0
dma16384   16384      2    0        2     1     1     0     1     0     8    0
dma4096    4096       1    0        1     1     1     0     1     0     8    0
dma1024    1024       1    0        0     1     0     1     1     0     8    0
dma256     256        7    0        7     2     1     1     1     0     8    1
dma128     128      255    0      255     3     2     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       18    0       17     1     0     1     1     0     8    0
aobjpl      72       41    0        1     1     0     1     1     0     8    0
uaddrrnd    24     1332    0     1303     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     1332    0     1303     1     0     1     1     0     8    0
vmmpekpl   168    12999    0    12949     3     0     3     3     0     8    0
vmmpepl    168    91562    0    89442   127    21   106   119     0   357    6
vmsppl     480     1331    0     1303     7     2     5     5     0     8    0
rwobjpl     72    31749    0    26567    96     1    95    95     0     8    0
pdppl      4096    2672    0     2606   106    34    72    84     0     8    6
pvpl        32    27868    0        0   227     2   225   225     0   265    0
pmappl     256     1331    0     1303     3     0     3     3     0     8    0
extentpl    40       45    0       27     1     0     1     1     0     8    0
phpool     112      423    0       66    11     0    11    11     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
x86_ipi_db(ffffffff837ffff0) 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(ffffffff8398af58) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff8398af58) at __mp_lock+0x192 sys/kern/kern_lock.c:165
intr_handler(ffff8000317eb8c0,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff8398af58) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff8398af58) at __mp_lock+0x192 sys/kern/kern_lock.c:165
ktrsyscall(ffff800037c11220,4a,18,ffff8000317ebb70) at ktrsyscall+0x2b3 ktrwrite sys/kern/kern_ktrace.c:-1 [inline]
ktrsyscall(ffff800037c11220,4a,18,ffff8000317ebb70) at ktrsyscall+0x2b3 sys/kern/kern_ktrace.c:183
syscall(ffff8000317ebb70) at syscall+0x2e6 mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff8000317ebb70) at syscall+0x2e6 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x71327f06d6d0, count: 5
ddb{0}> trace
x86_ipi_db(ffffffff837ffff0) 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(ffffffff8398af58) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff8398af58) at __mp_lock+0x192 sys/kern/kern_lock.c:165
intr_handler(ffff8000317eb8c0,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff8398af58) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff8398af58) at __mp_lock+0x192 sys/kern/kern_lock.c:165
ktrsyscall(ffff800037c11220,4a,18,ffff8000317ebb70) at ktrsyscall+0x2b3 ktrwrite sys/kern/kern_ktrace.c:-1 [inline]
ktrsyscall(ffff800037c11220,4a,18,ffff8000317ebb70) at ktrsyscall+0x2b3 sys/kern/kern_ktrace.c:183
syscall(ffff8000317ebb70) at syscall+0x2e6 mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff8000317ebb70) at syscall+0x2e6 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x71327f06d6d0, count: -10
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(ffffffff83429240) at panic+0x1e5 sys/kern/subr_prf.c:198
unhandled_af(12) at unhandled_af+0x1a sys/net/if.c:-1
if_output_tso(ffff800000039058,ffff80002a2a6d80,ffff8000014a0180,fffffd807a042790,5dc) at if_output_tso+0x241 sys/net/if.c:898
ip_output(fffffd80646adb00,0,fffffd806f4b6448,0,0,fffffd806f4b64e0,23886c75692c19ae) at ip_output+0x12aa sys/netinet/ip_output.c:437
tcp_output(ffff80000144a420) at tcp_output+0x3566 sys/netinet/tcp_output.c:1093
tcp_send(ffff800010fe16d0,fffffd8079df8900,0,0) at tcp_send+0x191 sys/netinet/tcp_usrreq.c:857
sosend(ffff800010fe16d0,0,ffff80002a2a71b8,0,0,80) at sosend+0x804 sys/kern/uipc_socket.c:-1
dofilewritev(ffff80002a2a87c8,3,ffff80002a2a71b8,0,ffff80002a2a7270) at dofilewritev+0x23c sys/kern/sys_generic.c:380
sys_write(ffff80002a2a87c8,ffff80002a2a7320,ffff80002a2a7270) at sys_write+0xa2 sys/kern/sys_generic.c:300
syscall(ffff80002a2a7320) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2a7320) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7364a03542d0, count: 3
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83429240) at panic+0x1e5 sys/kern/subr_prf.c:198
unhandled_af(12) at unhandled_af+0x1a sys/net/if.c:-1
if_output_tso(ffff800000039058,ffff80002a2a6d80,ffff8000014a0180,fffffd807a042790,5dc) at if_output_tso+0x241 sys/net/if.c:898
ip_output(fffffd80646adb00,0,fffffd806f4b6448,0,0,fffffd806f4b64e0,23886c75692c19ae) at ip_output+0x12aa sys/netinet/ip_output.c:437
tcp_output(ffff80000144a420) at tcp_output+0x3566 sys/netinet/tcp_output.c:1093
tcp_send(ffff800010fe16d0,fffffd8079df8900,0,0) at tcp_send+0x191 sys/netinet/tcp_usrreq.c:857
sosend(ffff800010fe16d0,0,ffff80002a2a71b8,0,0,80) at sosend+0x804 sys/kern/uipc_socket.c:-1
dofilewritev(ffff80002a2a87c8,3,ffff80002a2a71b8,0,ffff80002a2a7270) at dofilewritev+0x23c sys/kern/sys_generic.c:380
sys_write(ffff80002a2a87c8,ffff80002a2a7320,ffff80002a2a7270) at sys_write+0xa2 sys/kern/sys_generic.c:300
syscall(ffff80002a2a7320) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2a7320) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7364a03542d0, count: -12

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/07/19 19:12 openbsd 0e7ce4eb8da0 3cda49cf .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: unhandled af
* Struck through repros no longer work on HEAD.