syzbot


panic:p antcicp_:o uketrpunetl

Status: closed as dup on 2022/08/29 03:58
Reported-by: syzbot+d87442770d61755bf39a@syzkaller.appspotmail.com
First crash: 687d, last: 687d
Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
panic: tcp_output C 762 685d 687d

Sample crash report:
panic:p  antcicp_:o uketrpunetl
 Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*151221  89214  32767        0x10  0x4000000    0  syz-executor.3
 236939  91763      0     0x14000      0x200    1  reaper
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8257b2ef) at panic+0x177 sys/kern/subr_prf.c:198
tcp_output(ffff800000d898b0) at tcp_output+0x2cd2 sys/netinet/tcp_output.c:727
tcp_send(fffffd807d16ed90,fffffd8079a89000,0,fffffd80781e9100) at tcp_send+0xc4 sys/netinet/tcp_usrreq.c:953
sosend(fffffd807d16ed90,0,ffff80002e4a4460,0,fffffd80781e9100,0) at sosend+0x62a pru_send sys/sys/protosw.h:331 [inline]
sosend(fffffd807d16ed90,0,ffff80002e4a4460,0,fffffd80781e9100,0) at sosend+0x62a sys/kern/uipc_socket.c:646
sendit(ffff8000247b3cf0,5,ffff80002e4a45e0,0,ffff80002e4a46d0) at sendit+0x65d sys/kern/uipc_syscalls.c:694
sys_sendmsg(ffff8000247b3cf0,ffff80002e4a4688,ffff80002e4a46d0) at sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601
syscall(ffff80002e4a4750) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002e4a4750) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb93ce5b2890, count: 6
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: tcp_output
 cpu1: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_map.c", line 2486
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8257b2ef) at panic+0x177 sys/kern/subr_prf.c:198
tcp_output(ffff800000d898b0) at tcp_output+0x2cd2 sys/netinet/tcp_output.c:727
tcp_send(fffffd807d16ed90,fffffd8079a89000,0,fffffd80781e9100) at tcp_send+0xc4 sys/netinet/tcp_usrreq.c:953
sosend(fffffd807d16ed90,0,ffff80002e4a4460,0,fffffd80781e9100,0) at sosend+0x62a pru_send sys/sys/protosw.h:331 [inline]
sosend(fffffd807d16ed90,0,ffff80002e4a4460,0,fffffd80781e9100,0) at sosend+0x62a sys/kern/uipc_socket.c:646
sendit(ffff8000247b3cf0,5,ffff80002e4a45e0,0,ffff80002e4a46d0) at sendit+0x65d sys/kern/uipc_syscalls.c:694
sys_sendmsg(ffff8000247b3cf0,ffff80002e4a4688,ffff80002e4a46d0) at sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601
syscall(ffff80002e4a4750) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002e4a4750) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb93ce5b2890, count: -9
ddb{0}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff80002e4a40c0
rbx               0xffffffff829a1b8f    cpu_info_full_primary+0x2b8f
rdx               0xffff800000be4940
rcx                                0
rax               0xffff8000247b3cf0
r8                 0x101010101010101
r9                0x8080808080808080
r10               0x9ac660af431bd637
r11               0x466cbee1bb0f7f48
r12               0xffffffff829a1990    cpu_info_full_primary+0x2990
r13                                0
r14                                0
r15                              0x1
rip               0xffffffff81a16d08    db_enter+0x18
cs                               0x8
rflags                         0x246
rsp               0xffff80002e4a40b0
ss                              0x10
db_enter+0x18:  addq    $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.3) pid=151221 stat=onproc
    flags process=10<SUGID> proc=4000000<THREAD>
    pri=32, usrpri=82, nice=20
    forw=0xffffffffffffffff, list=0xffff8000247b3270,0xffffffff82af9b68
    process=0xffff8000ffff2dd0 user=0xffff80002e49f000, vmspace=0xfffffd8068b17188
    estcpu=36, cpticks=0, pctcpu=0.0
    user=0, sys=0, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 85949  309215   4388  32767  2        0x10                syz-executor.7
 85949  235690   4388  32767  3   0x4000090  fsleep        syz-executor.7
 85949  504480   4388  32767  3   0x4000090  fsleep        syz-executor.7
 85949  475718   4388  32767  2   0x4000010                syz-executor.7
 89214  403202  35324  32767  2        0x10                syz-executor.3
*89214  151221  35324  32767  7   0x4000010                syz-executor.3
 31560    9368  59379  32767  3        0x90  nanoslp       syz-executor.1
 31560  266176  59379  32767  3   0x4000090  fsleep        syz-executor.1
 37428  392788  23100  32767  2        0x10                syz-executor.0
 37428  180532  23100  32767  3   0x4000090  fsleep        syz-executor.0
 55656   88267  42718  32767  2        0x10                syz-executor.5
 59379  238086  29803  32767  3        0x90  nanoslp       syz-executor.1
 29803  416806  83845      0  3        0x82  wait          syz-executor.1
 35324  234000  41914  32767  3        0x90  nanoslp       syz-executor.3
 41914  410635  83845      0  3        0x82  wait          syz-executor.3
  4388   23650  64867  32767  3        0x90  nanoslp       syz-executor.7
 64867  172953  83845      0  3        0x82  wait          syz-executor.7
 42718   37871   5664  32767  3        0x90  nanoslp       syz-executor.5
  5664  256041  83845      0  3        0x82  wait          syz-executor.5
 23100  217663  66705  32767  3        0x90  nanoslp       syz-executor.0
 66705  176463  83845      0  3        0x82  wait          syz-executor.0
 39343  156302  46509  32767  3        0x90  nanoslp       syz-executor.4
 46509   73675  83845      0  3        0x82  wait          syz-executor.4
  5077   94864  97009  32767  2        0x10                syz-executor.2
 97009  268104  83845      0  3        0x82  wait          syz-executor.2
 96980  128966      0      0  3     0x14200  bored         sosplice
 24752   85361  45881  32767  3        0x90  nanoslp       syz-executor.6
 45881  419461  83845      0  3        0x82  wait          syz-executor.6
 83845  376445   8615      0  3        0x82  wait          syz-fuzzer
 83845  198180   8615      0  3   0x4000082  nanoslp       syz-fuzzer
 83845  493719   8615      0  3   0x4000082  thrsleep      syz-fuzzer
 83845  140810   8615      0  3   0x4000082  wait          syz-fuzzer
 83845  435522   8615      0  3   0x4000082  wait          syz-fuzzer
 83845  407232   8615      0  3   0x4000082  thrsleep      syz-fuzzer
 83845  410877   8615      0  3   0x4000082  wait          syz-fuzzer
 83845  368331   8615      0  3   0x4000082  thrsleep      syz-fuzzer
 83845  391023   8615      0  3   0x4000082  kqread        syz-fuzzer
 83845   62469   8615      0  3   0x4000082  thrsleep      syz-fuzzer
 83845    2132   8615      0  3   0x4000082  wait          syz-fuzzer
 83845    4287   8615      0  3   0x4000082  wait          syz-fuzzer
 83845  424368   8615      0  3   0x4000082  wait          syz-fuzzer
 83845  481586   8615      0  3   0x4000082  nanoslp       syz-fuzzer
 83845  235064   8615      0  3   0x4000082  wait          syz-fuzzer
 83845   26033   8615      0  3   0x4000082  thrsleep      syz-fuzzer
  8615  269715  86700      0  3    0x10008a  sigsusp       ksh
 86700  137441  74256      0  3        0x9a  kqread        sshd
  4329  357818      1      0  3    0x100083  ttyin         getty
 74256  170963      1      0  3        0x88  kqread        sshd
 33908  367195  51128     73  3   0x1100090  kqread        syslogd
 51128  453150      1      0  3    0x100082  netio         syslogd
 46742  234122      1      0  3    0x100080  kqread        resolvd
 44744   82319  36216     77  3    0x100092  kqread        dhcpleased
 12431  394672  36216     77  3    0x100092  kqread        dhcpleased
 36216  128017      1      0  3        0x80  kqread        dhcpleased
 57376   13789      0      0  3     0x14200  bored         smr
 47083  112512      0      0  2     0x14200                zerothread
 25865  493879      0      0  3     0x14200  aiodoned      aiodoned
 98842   78030      0      0  3     0x14200  syncer        update
 23709  374088      0      0  3     0x14200  cleaner       cleaner
 91763  236939      0      0  7     0x14200                reaper
 74889  419455      0      0  3     0x14200  pgdaemon      pagedaemon
 23511   90345      0      0  3     0x14200  bored         viomb
 82140  269008      0      0  3  0x40014200  acpi0         acpi0
 90839  274797      0      0  3  0x40014200                idle1
 47550  421617      0      0  3     0x14200  bored         softnet
  4344  273827      0      0  3     0x14200  bored         softnet
 77580   49018      0      0  3     0x14200  bored         softnet
 87908  239455      0      0  3     0x14200  bored         softnet
 13817  267634      0      0  3     0x14200  bored         systqmp
 24079  442665      0      0  3     0x14200  bored         systq
   575  151015      0      0  3  0x40014200  bored         softclock
 36195  403806      0      0  3  0x40014200                idle0
     1  225308      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{0}> show all locks
CPU 1:
exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff82add780)
#0  witness_lock+0x44d
#1  mtx_enter_try+0x100
#2  mtx_enter+0x4b sys/kern/kern_lock.c:266
#3  uvm_pmr_freepageq+0xcc sys/uvm/uvm_pmemrange.c:1333
#4  amap_wipeout+0x1ff sys/uvm/uvm_amap.c:523
#5  uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1351
#6  uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2541
#7  uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436
#8  reaper+0x19a sys/kern/kern_exit.c:448
#9  proc_trampoline+0x1c
Process 89214 (syz-executor.3) thread 0xffff8000247b3cf0 (151221)
exclusive rwlock netlock r = 0 (0xffffffff8291ebe0)
#0  witness_lock+0x44d
#1  sosend+0x500 sys/kern/uipc_socket.c:632
#2  sendit+0x65d sys/kern/uipc_syscalls.c:694
#3  sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601
#4  syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#4  syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
#5  Xsyscall+0x128
Process 5077 (syz-executor.2) thread 0xffff80002e48b7a8 (94864)
exclusive rrwlock inode r = 0 (0xfffffd806c5e8e70)
#0  witness_lock+0x44d
#1  rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3  VOP_LOCK+0x87 sys/kern/vfs_vops.c:518
#4  ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140
#5  ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1353
#6  ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#7  ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150
#8  VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388
#9  domkdirat+0x121 sys/kern/vfs_syscalls.c:3112
#10 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#10 syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806c0fc5f0)
#0  witness_lock+0x44d
#1  rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2  rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3  VOP_LOCK+0x87 sys/kern/vfs_vops.c:518
#4  vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5  vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412
#6  namei+0x36a sys/kern/vfs_lookup.c:244
#7  domkdirat+0x75 sys/kern/vfs_syscalls.c:3097
#8  syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#8  syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#9  Xsyscall+0x128
Process 91763 (reaper) thread 0xffff800021232d28 (236939)
exclusive rwlock amaplk r = 0 (0xfffffd8078fcac50)
#0  witness_lock+0x44d
#1  amap_unref+0x2b sys/uvm/uvm_amap.c:1363
#2  uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1351
#3  uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2541
#4  uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436
#5  reaper+0x19a sys/kern/kern_exit.c:448
#6  proc_trampoline+0x1c
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10224   6414K    6419K  78643K     11439        0
            pcb    13     16K      20K  78643K        19        0
         rtable   242      6K       7K  78643K      3324        0
         ifaddr    82     17K      17K  78643K       375        0
         sysctl     3      1K       5K  78643K         7        0
       counters    56     35K      35K  78643K       138        0
       ioctlops     0      0K       2K  78643K       572        0
            iov     0      0K      36K  78643K      4823        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         4        0
         vnodes  1271     79K      79K  78643K      8274        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     2      1K       9K  78643K       317        0
         VM map     2      1K       1K  78643K         2        0
            sem    12      0K       0K  78643K      4602        0
        dirhash    12      2K       2K  78643K        12        0
           ACPI  1697    195K     286K  78643K     12548        0
      file desc    23     85K     121K  78643K     24654        0
          sigio     0      0K       0K  78643K       925        0
           proc    56     78K     115K  78643K      3534        0
        subproc   104      6K       6K  78643K       637        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
    ip_moptions     0      0K       0K  78643K      2017        0
       in_multi    99      6K       7K  78643K       813        0
    ether_multi     1      0K       0K  78643K        85        0
            mrt     1      0K       0K  78643K         1        0
    ISOFS mount     1     32K      32K  78643K         1        0
  MSDOSFS mount     1     16K      16K  78643K         1        0
           ttys   325   1447K    1447K  78643K       325        0
           exec     0      0K       2K  78643K      5485        0
            tdb     3      0K       0K  78643K         3        0
        pagedep     1      8K       8K  78643K         1        0
       inodedep     1     32K      32K  78643K         1        0
         newblk     1      0K       0K  78643K         1        0
        VM swap     8     62K      62K  78643K         8        0
       UVM amap   376     93K     108K  78643K    150658        0
       UVM aobj   131     11K      11K  78643K       133        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
    ip6_options     0      0K       0K  78643K       697        0
            NDP    11      0K       2K  78643K       150        0
           temp   124   4726K    4854K  78643K     63264        0
         kqueue    13     20K      28K  78643K      2399        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
plcache    128       22    0        0     1     0     1     1     0     8    0
rtpcb      120     2890    0     2887    43    40     3     5     0     8    2
rtentry    112      583    0      469     4     0     4     4     0     8    0
unpcb      144    25244    0    25230   212   209     3    11     0     8    2
syncache   296      283    0      283    54    53     1     1     0     8    1
sackhl      24        1    0        1     1     1     0     1     0     8    0
tcpqe       32       96    0       96    29    28     1     1     0     8    1
tcpcb      768    29669    0    29649   636   625    11    29     0     8    7
arp        120      104    0       85     1     0     1     1     0     8    0
ipq         40       90    0       90    13    13     0     1     0     8    0
ipqe        40      277    0      277    13    13     0     1     0     8    0
inpcb      368    38679    0    38664   446   436    10    25     0     8    8
ip6q        72        1    0        1     1     1     0     1     0     8    0
ip6af       40        1    0        1     1     1     0     1     0     8    0
nd6         48      164    0      137     1     0     1     1     0     8    0
kcovpl      48       49    0       41     1     0     1     1     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256     2325    0     1858    32     2    30    30     0     8    0
art_table   32     2326    0     1858     4     0     4     4     0     8    0
art_node    16      582    0      478     1     0     1     1     0     8    0
sysvmsgpl   40       13    0       10     2     1     1     1     0     8    0
semupl     112        4    0        4     1     1     0     1     0     8    0
semapl     112     4600    0     4590     1     0     1     1     0     8    0
shmpl      112      130    0        2     4     0     4     4     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256    36735    0    35263    93     0    93    93     0     8    0
ffsino     272    36735    0    35263    99     0    99    99     0     8    0
nchpl      144    70188    0    68547    63     0    63    63     0     8    0
uvmvnodes   80     5926    0        0   121     0   121   121     0     8    0
vnodes     216     5926    0        0   330     0   330   330     0     8    0
namei      1024  248641    0   248640     7     6     1     2     0     8    0
percpumem   16       81    0       41     1     0     1     1     0     8    0
kstatmem   264      104    0       82     2     0     2     2     0     8    0
scxspl     216   220718    0   220718    61    60     1     8     0     8    1
plimitpl   152     6231    0     6208    25    24     1     2     0     8    0
sigapl     424    24851    0    24797     7     0     7     7     0     8    0
futexpl     64   222836    0   222832    13    12     1     1     0     8    0
knotepl    120     1523    0        0    19     2    17    17     0     8    0
kqueuepl   216     8094    0     8085   151   150     1    10     0     8    0
pipepl     320     5723    0     5694   135   132     3     9     0     8    0
fdescpl    496    24833    0    24799     7     2     5     6     0     8    0
filepl     152   197827    0   197579   329   314    15    24     0     8    5
lockfpl    104     3501    0     3499     7     6     1     2     0     8    0
lockfspl    48      918    0      916     1     0     1     1     0     8    0
sessionpl  144       64    0       48     1     0     1     1     0     8    0
pgrppl      48      444    0      428     1     0     1     1     0     8    0
ucredpl    104    37075    0    37057     1     0     1     1     0     8    0
zombiepl   144    24799    0    24797     1     0     1     1     0     8    0
processpl  1064   24851    0    24797     5     1     4     5     0     8    0
procpl     672    73007    0    72931    45    37     8     9     0     8    0
sosppl     168      410    0      410    39    38     1     1     0     8    1
sockpl     488    67501    0    67471  1318  1305    13    51     0     8    8
mcl64k     65536     73    0        0     8     5     3     8     0     8    0
mcl16k     16384     25    0        0     3     0     3     3     0     8    0
mcl12k     12288     49    0        0     2     0     2     2     0     8    0
mcl9k      9216      20    0        0     2     0     2     2     0     8    0
mcl8k      8192      57    0        0     6     3     3     3     0     8    0
mcl4k      4096      81    0        0     4     1     3     4     0     8    0
mcl2k2     2112      25    0        0     2     0     2     2     0     8    0
mcl2k      2048     626    0        0    45    28    17    45     0     8    0
mtagpl      96        5    0        0     1     0     1     1     0     8    0
mbufpl     256     8078    0        0   430     1   429   429     0     8    0
bufpl      288    42517    0    36184   453     0   453   453     0     8    0
anonpl      24  8311998    0  8298344   531   399   132   157     0   186    3
amapchunkpl 152  490993    0   490325   281   251    30    50     0   158    1
amappl16   200   264049    0   263665  1169  1136    33    60     0     8    8
amappl15   192      660    0      651     1     0     1     1     0     8    0
amappl14   184      999    0      995     1     0     1     1     0     8    0
amappl13   176     4449    0     4446     1     0     1     1     0     8    0
amappl12   168     3447    0     3438     1     0     1     1     0     8    0
amappl11   160     5669    0     5648     1     0     1     1     0     8    0
amappl10   152     4312    0     4305     2     1     1     1     0     8    0
amappl9    144     4087    0     4085     1     0     1     1     0     8    0
amappl8    136     3925    0     3755     7     0     7     7     0     8    1
amappl7    128     2474    0     2453     1     0     1     1     0     8    0
amappl6    120     4187    0     4165     2     1     1     2     0     8    0
amappl5    112    20344    0    20327     1     0     1     1     0     8    0
amappl4    104    11457    0    11413     2     0     2     2     0     8    0
amappl3     96    81018    0    80948     5     2     3     3     0     8    1
amappl2     88     9509    0     9455     5     3     2     2     0     8    0
amappl1     80   622638    0   621895    20     3    17    19     0     8    0
amappl      88   148244    0   148046     8     2     6     6     0    92    0
dma4096    4096       1    0        1     1     1     0     1     0     8    0
dma1024    1024       1    0        0     1     0     1     1     0     8    0
dma256     256        6    0        6     1     1     0     1     0     8    0
dma128     128      253    0      253     1     1     0     1     0     8    0
dma64       64        6    0        6     1     1     0     1     0     8    0
dma32       32        7    0        7     1     1     0     1     0     8    0
dma16       16       18    0       17     1     0     1     1     0     8    0
aobjpl      72      132    0        2     3     0     3     3     0     8    0
uaddrrnd    24    24833    0    24798     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24    24833    0    24798     1     0     1     1     0     8    0
vmmpekpl   168   203712    0   203659     3     0     3     3     0     8    0
vmmpepl    168  2655479    0  2652573   726   574   152   165     0   357   15
vmsppl     368    24832    0    24798     4     0     4     4     0     8    0
rwobjpl     56   802716    0   795146   155    41   114   118     0     8    0
pdppl      4096   49673    0    49596   698   617    81    93     0     8    4
pvpl        32 13138692    0 13119397  1093   872   221   257     0   265   14
pmappl     248    24832    0    24798     4     1     3     3     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112     2335    0     1101    36     0    36    36     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:437
panic(ffffffff8257b2ef) at panic+0x177 sys/kern/subr_prf.c:198
tcp_output(ffff800000d898b0) at tcp_output+0x2cd2 sys/netinet/tcp_output.c:727
tcp_send(fffffd807d16ed90,fffffd8079a89000,0,fffffd80781e9100) at tcp_send+0xc4 sys/netinet/tcp_usrreq.c:953
sosend(fffffd807d16ed90,0,ffff80002e4a4460,0,fffffd80781e9100,0) at sosend+0x62a pru_send sys/sys/protosw.h:331 [inline]
sosend(fffffd807d16ed90,0,ffff80002e4a4460,0,fffffd80781e9100,0) at sosend+0x62a sys/kern/uipc_socket.c:646
sendit(ffff8000247b3cf0,5,ffff80002e4a45e0,0,ffff80002e4a46d0) at sendit+0x65d sys/kern/uipc_syscalls.c:694
sys_sendmsg(ffff8000247b3cf0,ffff80002e4a4688,ffff80002e4a46d0) at sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601
syscall(ffff80002e4a4750) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002e4a4750) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb93ce5b2890, count: -9
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x1a:        addq    $0x8,%rsp
x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x28 sys/arch/amd64/amd64/bus_space.c:651
comcnputc(800,64) at comcnputc+0x97 sys/dev/ic/com.c:1259
cnputc(64) at cnputc+0x4b sys/dev/cons.c:218
db_putchar(64) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1064
db_printf(ffffffff8261b4d8) at db_printf+0x85 sys/kern/subr_prf.c:498
panic(ffffffff825a14be) at panic+0xd7 sys/kern/subr_prf.c:216
__assert(ffffffff82619d34,ffffffff826406ea,9b6,ffffffff825d59fb) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd806ff73a20) at uvm_map_teardown+0x2e8 sys/uvm/uvm_map.c:2488
uvmspace_free(fffffd806ff73a20) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436
reaper(ffff800021232d28) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: 1
ddb{1}> trace
x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x28 sys/arch/amd64/amd64/bus_space.c:651
comcnputc(800,64) at comcnputc+0x97 sys/dev/ic/com.c:1259
cnputc(64) at cnputc+0x4b sys/dev/cons.c:218
db_putchar(64) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1064
db_printf(ffffffff8261b4d8) at db_printf+0x85 sys/kern/subr_prf.c:498
panic(ffffffff825a14be) at panic+0xd7 sys/kern/subr_prf.c:216
__assert(ffffffff82619d34,ffffffff826406ea,9b6,ffffffff825d59fb) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd806ff73a20) at uvm_map_teardown+0x2e8 sys/uvm/uvm_map.c:2488
uvmspace_free(fffffd806ff73a20) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436
reaper(ffff800021232d28) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: -14

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/08/28 06:31 openbsd 293c01dc0e68 07177916 .config console log report ci-openbsd-setuid panic:p antcicp_:o uketrpunetl
* Struck through repros no longer work on HEAD.