syzbot


panic: tpcanpi_co:ut kpeurt

Status: closed as dup on 2022/08/29 03:58
Reported-by: syzbot+94372874a41ed485a2e2@syzkaller.appspotmail.com
First crash: 696d, last: 696d
Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
panic: tcp_output C 762 695d 696d

Sample crash report:
panic:  tpcanpi_co:ut kpeurt
nelStopped at     db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*283475  17650  32767        0x10  0x4000000    1  syz-executor.6
 222726  50397      0     0x14000      0x200    0  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(ffff800000bb9200) at tcp_output+0x2cd2 sys/netinet/tcp_output.c:727
tcp_send(fffffd807c6063d0,fffffd80784dda00,0,fffffd8078466b00) at tcp_send+0xc4 sys/netinet/tcp_usrreq.c:953
sosend(fffffd807c6063d0,0,ffff80002e4cb690,0,fffffd8078466b00,4) at sosend+0x62a pru_send sys/sys/protosw.h:331 [inline]
sosend(fffffd807c6063d0,0,ffff80002e4cb690,0,fffffd8078466b00,4) at sosend+0x62a sys/kern/uipc_socket.c:646
sendit(ffff80002b056540,13,ffff80002e4cb810,4,ffff80002e4cb900) at sendit+0x65d sys/kern/uipc_syscalls.c:694
sys_sendmsg(ffff80002b056540,ffff80002e4cb8b8,ffff80002e4cb900) at sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601
syscall(ffff80002e4cb980) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002e4cb980) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3b407dd7b50, 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{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
 cpu0: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_map.c", line 2486
*cpu1: tcp_output
ddb{1}> 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(ffff800000bb9200) at tcp_output+0x2cd2 sys/netinet/tcp_output.c:727
tcp_send(fffffd807c6063d0,fffffd80784dda00,0,fffffd8078466b00) at tcp_send+0xc4 sys/netinet/tcp_usrreq.c:953
sosend(fffffd807c6063d0,0,ffff80002e4cb690,0,fffffd8078466b00,4) at sosend+0x62a pru_send sys/sys/protosw.h:331 [inline]
sosend(fffffd807c6063d0,0,ffff80002e4cb690,0,fffffd8078466b00,4) at sosend+0x62a sys/kern/uipc_socket.c:646
sendit(ffff80002b056540,13,ffff80002e4cb810,4,ffff80002e4cb900) at sendit+0x65d sys/kern/uipc_syscalls.c:694
sys_sendmsg(ffff80002b056540,ffff80002e4cb8b8,ffff80002e4cb900) at sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601
syscall(ffff80002e4cb980) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002e4cb980) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3b407dd7b50, count: -9
ddb{1}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff80002e4cb2f0
rbx               0xffff800020dd9b8f
rdx               0xffff800000bfb800
rcx                                0
rax               0xffff80002b056540
r8                 0x101010101010101
r9                0x8080808080808080
r10               0xbe0adc3c9bc8e3ec
r11               0xa4565bf8dcb4df09
r12               0xffff800020dd9990
r13                                0
r14                                0
r15                              0x1
rip               0xffffffff81a16d08    db_enter+0x18
cs                               0x8
rflags                         0x246
rsp               0xffff80002e4cb2e0
ss                              0x10
db_enter+0x18:  addq    $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.6) pid=283475 stat=onproc
    flags process=10<SUGID> proc=4000000<THREAD>
    pri=32, usrpri=76, nice=20
    forw=0xffffffffffffffff, list=0xffff8000ffff2008,0xffff800027bfb7c0
    process=0xffff800027bed0b8 user=0xffff80002e4c6000, vmspace=0xfffffd80676e5468
    estcpu=36, cpticks=0, pctcpu=0.0
    user=0, sys=0, intr=0
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 72920  434899  36302  32767  2        0x10                syz-executor.5
 50784  510070  21808  32767  2        0x10                syz-executor.4
 50784  311537  21808  32767  3   0x4000090  fsleep        syz-executor.4
 17650  121531  91892  32767  2        0x10                syz-executor.6
*17650  283475  91892  32767  7   0x4000010                syz-executor.6
 98427  383158  76648  32767  2        0x10                syz-executor.3
 98427  161558  76648  32767  3   0x4000090  fsleep        syz-executor.3
 80250  395375      0      0  3     0x14200  bored         sosplice
 91892  260367  48019  32767  3        0x90  nanoslp       syz-executor.6
 48019  368775  70700      0  3        0x82  wait          syz-executor.6
 72746  189249  69848  32767  3        0x90  nanoslp       syz-executor.7
 69848  357459  70700      0  3        0x82  wait          syz-executor.7
 36302  194343  14669  32767  3        0x90  nanoslp       syz-executor.5
 21808  161551  79340  32767  3        0x90  nanoslp       syz-executor.4
 14669  227882  70700      0  3        0x82  wait          syz-executor.5
 79340  396466  70700      0  3        0x82  wait          syz-executor.4
 76648   38131  59473  32767  3        0x90  nanoslp       syz-executor.3
 59473  337373  70700      0  3        0x82  wait          syz-executor.3
 90708  163247  81745  32767  3        0x10  biowait       syz-executor.2
 93174  217437   6686  32767  3        0x90  nanoslp       syz-executor.1
 81745  469458  70700      0  3        0x82  wait          syz-executor.2
  6686  277406  70700      0  3        0x82  wait          syz-executor.1
 49795   10946  46406  32767  3        0x90  nanoslp       syz-executor.0
 46406  313942  70700      0  3        0x82  wait          syz-executor.0
 70700  290688  11921      0  3        0x82  kqread        syz-fuzzer
 70700  522285  11921      0  3   0x4000082  nanoslp       syz-fuzzer
 70700  466102  11921      0  3   0x4000082  wait          syz-fuzzer
 70700  491965  11921      0  3   0x4000082  wait          syz-fuzzer
 70700  205424  11921      0  3   0x4000082  thrsleep      syz-fuzzer
 70700  351060  11921      0  3   0x4000082  thrsleep      syz-fuzzer
 70700  382922  11921      0  3   0x4000082  wait          syz-fuzzer
 70700  393418  11921      0  3   0x4000082  wait          syz-fuzzer
 70700  176758  11921      0  3   0x4000082  thrsleep      syz-fuzzer
 70700  399140  11921      0  3   0x4000082  wait          syz-fuzzer
 70700    7375  11921      0  3   0x4000082  wait          syz-fuzzer
 70700   54646  11921      0  3   0x4000082  wait          syz-fuzzer
 70700  385733  11921      0  3   0x4000082  thrsleep      syz-fuzzer
 70700  257508  11921      0  3   0x4000082  wait          syz-fuzzer
 70700  123696  11921      0  3   0x4000082  nanoslp       syz-fuzzer
 70700  197760  11921      0  3   0x4000082  thrsleep      syz-fuzzer
 11921  279670  22182      0  3    0x10008a  sigsusp       ksh
 22182  273110  48396      0  3        0x9a  kqread        sshd
 20251  108459      1      0  3    0x100083  ttyin         getty
 48396  504152      1      0  3        0x88  kqread        sshd
 49891   16729  29530     73  3   0x1100090  kqread        syslogd
 29530  415158      1      0  3    0x100082  netio         syslogd
  7550  182560      1      0  3    0x100080  kqread        resolvd
 69370   55165  84046     77  3    0x100092  kqread        dhcpleased
 97754  403720  84046     77  3    0x100092  kqread        dhcpleased
 84046  375908      1      0  3        0x80  kqread        dhcpleased
 77591  174911      0      0  3     0x14200  bored         smr
 51336  207994      0      0  2     0x14200                zerothread
 48522   88095      0      0  3     0x14200  aiodoned      aiodoned
 97045   90914      0      0  3     0x14200  syncer        update
 15699  141874      0      0  3     0x14200  cleaner       cleaner
 50397  222726      0      0  7     0x14200                reaper
 80894  312090      0      0  3     0x14200  pgdaemon      pagedaemon
  5910  428576      0      0  3     0x14200  bored         viomb
 38891  492898      0      0  3  0x40014200  acpi0         acpi0
 49827  231308      0      0  3  0x40014200                idle1
  8317  355964      0      0  3     0x14200  bored         softnet
 37172   75370      0      0  3     0x14200  bored         softnet
  9855  120141      0      0  3     0x14200  bored         softnet
 17835  147325      0      0  3     0x14200  bored         softnet
 44093  394903      0      0  3     0x14200  bored         systqmp
 36551  296443      0      0  3     0x14200  bored         systq
 76629  327894      0      0  2  0x40014200                softclock
 28458  276916      0      0  3  0x40014200                idle0
     1  277656      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{1}> show all locks
CPU 0:
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 17650 (syz-executor.6) thread 0xffff80002b056540 (283475)
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 90708 (syz-executor.2) thread 0xffff8000ffff4fc0 (163247)
exclusive rrwlock inode r = 0 (0xfffffd80689ae2c8)
#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 (0xfffffd8067f595e8)
#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 50397 (reaper) thread 0xffff800021233508 (222726)
exclusive kernel: protection fault trap, code=0
Faulted in DDB; continuing...
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10199   6410K    6419K  78643K     11290        0
            pcb    13     12K      14K  78643K        17        0
         rtable   236      6K       7K  78643K       536        0
         ifaddr    82     16K      16K  78643K        84        0
         sysctl     2      0K       0K  78643K         2        0
       counters    56     35K      35K  78643K        56        0
       ioctlops     0      0K       2K  78643K        45        0
            iov     0      0K      32K  78643K       133        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         4        0
         vnodes  1270     79K      79K  78643K      1492        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     2      1K       5K  78643K        28        0
         VM map     2      1K       1K  78643K         2        0
            sem    12      0K       0K  78643K       801        0
        dirhash    12      2K       2K  78643K        12        0
           ACPI  1697    195K     286K  78643K     12548        0
      file desc    22     81K     109K  78643K      1800        0
          sigio     0      0K       0K  78643K         2        0
           proc    56     78K     115K  78643K       551        0
        subproc   104      6K       6K  78643K       104        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
    ip_moptions     0      0K       0K  78643K       323        0
       in_multi    99      6K       6K  78643K       105        0
    ether_multi     1      0K       0K  78643K         4        0
    ISOFS mount     1     32K      32K  78643K         1        0
  MSDOSFS mount     1     16K      16K  78643K         1        0
           ttys   175    784K     784K  78643K       175        0
           exec     0      0K       2K  78643K       695        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   274     84K     101K  78643K     12574        0
       UVM aobj   118      7K       7K  78643K       120        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
    ip6_options     0      0K       0K  78643K        53        0
            NDP    11      0K       2K  78643K        27        0
           temp   124   4726K    4854K  78643K      7449        0
         kqueue    12     18K      28K  78643K       303        0
      SYN cache     2     16K      16K  78643K         2        0
ddb{1}> 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      266    0      263     4     3     1     2     0     8    0
rtentry    112      114    0        3     4     0     4     4     0     8    0
unpcb      144     2787    0     2771    33    27     6    10     0     8    5
syncache   296       19    0       19     5     5     0     1     0     8    0
tcpqe       32       18    0       18     4     4     0     1     0     8    0
tcpcb      768     2373    0     2344    65    56     9    22     0     8    5
arp        120       18    0        0     1     0     1     1     0     8    0
ipq         40        2    0        2     1     1     0     1     0     8    0
ipqe        40        6    0        6     1     1     0     1     0     8    0
inpcb      368     3327    0     3305    35    27     8    14     0     8    5
nd6         48       27    0        2     1     0     1     1     0     8    0
kcovpl      48        8    0        0     1     0     1     1     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256      464    0        4    29     0    29    29     0     8    0
art_table   32      465    0        4     4     0     4     4     0     8    0
art_node    16      113    0       12     1     0     1     1     0     8    0
sysvmsgpl   40       40    0        0     1     0     1     1     0     8    0
semupl     112        5    0        5     1     1     0     1     0     8    0
semapl     112      799    0      789     1     0     1     1     0     8    0
shmpl      112      117    0        2     4     0     4     4     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256     3686    0     2253    90     0    90    90     0     8    0
ffsino     272     3686    0     2253    96     0    96    96     0     8    0
nchpl      144     6193    0     4521    63     0    63    63     0     8    0
uvmvnodes   80     3799    0        0    78     0    78    78     0     8    0
vnodes     216     3799    0        0   212     0   212   212     0     8    0
namei      1024   20628    0    20627     2     1     1     2     0     8    0
percpumem   16       40    0        0     1     0     1     1     0     8    0
kstatmem   264       22    0        0     2     0     2     2     0     8    0
scxspl     216    18900    0    18899    16    13     3     8     0     8    2
plimitpl   152      365    0      343     3     1     2     2     0     8    1
sigapl     424     2085    0     2031     7     0     7     7     0     8    0
futexpl     64    16562    0    16560     1     0     1     1     0     8    0
knotepl    120      559    0        0    17     0    17    17     0     8    0
kqueuepl   216      617    0      609     9     6     3     5     0     8    2
pipepl     320      422    0      394    11     8     3     6     0     8    0
fdescpl    496     2067    0     2034     7     2     5     6     0     8    0
filepl     152    15885    0    15633    45    30    15    22     0     8    5
lockfpl    104      295    0      293     1     0     1     1     0     8    0
lockfspl    48       70    0       68     1     0     1     1     0     8    0
sessionpl  144       23    0        7     1     0     1     1     0     8    0
pgrppl      48      171    0      155     1     0     1     1     0     8    0
ucredpl    104     1936    0     1918     1     0     1     1     0     8    0
zombiepl   144     2034    0     2031     1     0     1     1     0     8    0
processpl  1064    2085    0     2031     4     0     4     4     0     8    0
procpl     672     5581    0     5504    12     4     8     9     0     8    1
sosppl     168       18    0       16     2     1     1     1     0     8    0
sockpl     488     6440    0     6399   161   148    13    43     0     8    7
mcl64k     65536     13    0        0     2     0     2     2     0     8    0
mcl16k     16384      7    0        0     1     0     1     1     0     8    0
mcl12k     12288     16    0        0     2     0     2     2     0     8    0
mcl9k      9216       6    0        0     1     0     1     1     0     8    0
mcl8k      8192      15    0        0     2     0     2     2     0     8    0
mcl4k      4096      10    0        0     2     0     2     2     0     8    0
mcl2k2     2112       5    0        0     1     0     1     1     0     8    0
mcl2k      2048     353    0        0    44     1    43    44     0     8    0
mtagpl      96        2    0        0     1     0     1     1     0     8    0
mbufpl     256      689    0        0    40     0    40    40     0     8    0
bufpl      288     6660    0      330   453     0   453   453     0     8    0
anonpl      24   433962    0   421659   159    49   110   123     0   186   20
amapchunkpl 152   36029    0    35373    44     6    38    41     0   158    7
amappl16   200     7384    0     7016    62    39    23    38     0     8    0
amappl15   192      524    0      516     1     0     1     1     0     8    0
amappl14   184      461    0      452     1     0     1     1     0     8    0
amappl13   176       82    0       81     1     0     1     1     0     8    0
amappl12   168       13    0       10     1     0     1     1     0     8    0
amappl11   160       81    0       67     1     0     1     1     0     8    0
amappl10   152      633    0      628     1     0     1     1     0     8    0
amappl9    144      713    0      707     1     0     1     1     0     8    0
amappl8    136      832    0      758     3     0     3     3     0     8    0
amappl7    128      329    0      308     1     0     1     1     0     8    0
amappl6    120      417    0      403     2     1     1     2     0     8    0
amappl5    112     2183    0     2153     1     0     1     1     0     8    0
amappl4    104     1035    0     1008     2     1     1     2     0     8    0
amappl3     96     5840    0     5783     2     0     2     2     0     8    0
amappl2     88      522    0      490     2     1     1     2     0     8    0
amappl1     80    53871    0    53161    19     2    17    19     0     8    0
amappl      88    12032    0    11855     5     0     5     5     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      119    0        2     3     0     3     3     0     8    0
uaddrrnd    24     2067    0     2033     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     2067    0     2033     1     0     1     1     0     8    0
vmmpekpl   168    20178    0    20119     3     0     3     3     0     8    0
vmmpepl    168   206079    0   203456   160    31   129   142     0   357    2
vmsppl     368     2066    0     2033     4     0     4     4     0     8    0
rwobjpl     56    58284    0    53014    78     2    76    76     0     8    0
pdppl      4096    4141    0     4066   133    52    81    87     0     8    6
pvpl        32   877948    0   860668   281    83   198   248     0   265   42
pmappl     248     2066    0     2033     4     1     3     3     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112      940    0       83    25     0    25    25     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x1a:        addq    $0x8,%rsp
x86_ipi_db(ffffffff829a0ff0) 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_write_1(3f8,0,6c) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:771
comcnputc(800,6c) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline]
comcnputc(800,6c) at comcnputc+0x128 sys/dev/ic/com.c:1263
cnputc(6c) at cnputc+0x4b sys/dev/cons.c:218
db_putchar(6c) 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(fffffd80676e5b98) at uvm_map_teardown+0x2e8 sys/uvm/uvm_map.c:2488
uvmspace_free(fffffd80676e5b98) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436
reaper(ffff800021233508) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: 1
ddb{0}> trace
x86_ipi_db(ffffffff829a0ff0) 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_write_1(3f8,0,6c) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:771
comcnputc(800,6c) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline]
comcnputc(800,6c) at comcnputc+0x128 sys/dev/ic/com.c:1263
cnputc(6c) at cnputc+0x4b sys/dev/cons.c:218
db_putchar(6c) 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(fffffd80676e5b98) at uvm_map_teardown+0x2e8 sys/uvm/uvm_map.c:2488
uvmspace_free(fffffd80676e5b98) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436
reaper(ffff800021233508) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: -14
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
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(ffff800000bb9200) at tcp_output+0x2cd2 sys/netinet/tcp_output.c:727
tcp_send(fffffd807c6063d0,fffffd80784dda00,0,fffffd8078466b00) at tcp_send+0xc4 sys/netinet/tcp_usrreq.c:953
sosend(fffffd807c6063d0,0,ffff80002e4cb690,0,fffffd8078466b00,4) at sosend+0x62a pru_send sys/sys/protosw.h:331 [inline]
sosend(fffffd807c6063d0,0,ffff80002e4cb690,0,fffffd8078466b00,4) at sosend+0x62a sys/kern/uipc_socket.c:646
sendit(ffff80002b056540,13,ffff80002e4cb810,4,ffff80002e4cb900) at sendit+0x65d sys/kern/uipc_syscalls.c:694
sys_sendmsg(ffff80002b056540,ffff80002e4cb8b8,ffff80002e4cb900) at sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601
syscall(ffff80002e4cb980) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002e4cb980) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3b407dd7b50, count: 6
ddb{1}> 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(ffff800000bb9200) at tcp_output+0x2cd2 sys/netinet/tcp_output.c:727
tcp_send(fffffd807c6063d0,fffffd80784dda00,0,fffffd8078466b00) at tcp_send+0xc4 sys/netinet/tcp_usrreq.c:953
sosend(fffffd807c6063d0,0,ffff80002e4cb690,0,fffffd8078466b00,4) at sosend+0x62a pru_send sys/sys/protosw.h:331 [inline]
sosend(fffffd807c6063d0,0,ffff80002e4cb690,0,fffffd8078466b00,4) at sosend+0x62a sys/kern/uipc_socket.c:646
sendit(ffff80002b056540,13,ffff80002e4cb810,4,ffff80002e4cb900) at sendit+0x65d sys/kern/uipc_syscalls.c:694
sys_sendmsg(ffff80002b056540,ffff80002e4cb8b8,ffff80002e4cb900) at sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601
syscall(ffff80002e4cb980) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002e4cb980) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3b407dd7b50, count: -9

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/08/28 13:55 openbsd 293c01dc0e68 07177916 .config console log report ci-openbsd-setuid panic: tpcanpi_co:ut kpeurt
* Struck through repros no longer work on HEAD.