syzbot


panic: TCP stack bbr requested tcp_drop(ADDR) at connect()

Status: auto-closed as invalid on 2022/04/11 21:54
Reported-by: syzbot+4e6cf75cf26e4cb0d4a5@syzkaller.appspotmail.com
First crash: 807d, last: 807d

Sample crash report:
panic: TCP stack bbr requested tcp_drop(0xfffffe009290c000) at connect()
cpuid = 1
time = 1641938030
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe008fe7a7d0
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe008fe7a930
vpanic() at vpanic+0x2b8/frame 0xfffffe008fe7aa10
panic() at panic+0xb5/frame 0xfffffe008fe7aad0
tcp_usr_connect() at tcp_usr_connect+0x4ee/frame 0xfffffe008fe7abb0
soconnectat() at soconnectat+0x1d6/frame 0xfffffe008fe7ac10
kern_connectat() at kern_connectat+0x28a/frame 0xfffffe008fe7acf0
sys_connect() at sys_connect+0xfb/frame 0xfffffe008fe7ad30
amd64_syscall() at amd64_syscall+0x410/frame 0xfffffe008fe7af30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe008fe7af30
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x28a42a, rsp = 0x43f08, rbp = 0x43f70 ---
KDB: enter: panic
[ thread pid 2441 tid 102391 ]
Stopped at      kdb_enter+0x6b: movq    $0,0x2710baa(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b
es                        0x3b
fs                        0x13
gs                        0x1b
ss                        0x28
rax                       0x12
rcx         0xab0a36e249bd346c
rdx                        0x1
rbx                          0
rsp         0xfffffe008fe7a910
rbp         0xfffffe008fe7a930
rsi                          0
rdi         0xffffffff817621ea  vprintf+0x35a
r8                           0
r9                  0xffffffff
r10                          0
r11                 0x7bcf7aa8
r12         0xfffffe0092d94560
r13         0xfffffe008fe7a901
r14         0xffffffff82b59840  .str.18
r15         0xffffffff82b59840  .str.18
rip         0xffffffff8175576b  kdb_enter+0x6b
rflags                    0x46
kdb_enter+0x6b: movq    $0,0x2710baa(%rip)
db> show proc
Process 2441 (syz-executor.1) at 0xfffffe0097c40000:
 state: NORMAL
 uid: 0  gids: 0, 0, 5
 parent: pid 780 at 0xfffffe0092935a90
 ABI: FreeBSD ELF64
 flag: 0x10080480  flag2: 0
 arguments: /root/syz-executor.1 exec
 reaper: 0xfffffe0053de2000 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffffe00998843f0
   (map 0xfffffe00998843f0)
   (map.pmap 0xfffffe00998844b0)
   (pmap 0xfffffe0099884518)
 threads: 4
102383                   RunQ                                syz-executor.1
102390                   s                                   syz-executor.1
102391                   Run     CPU 1                       syz-executor.1
102392                   RunQ                                syz-executor.1
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 2442   792   792     0  R       (threaded)                  syz-executor.3
102386                   RunQ                                syz-executor.3
102389                   RunQ                                syz-executor.3
102393                   S       uwait   0xfffffe0092d9a000  syz-executor.3
 2441   780   780     0  T       (threaded)                  syz-executor.1
102383                   RunQ                                syz-executor.1
102390                   s                                   syz-executor.1
102391                   Run     CPU 1                       syz-executor.1
102392                   RunQ                                syz-executor.1
 2439   779   779     0  R       (threaded)                  syz-executor.0
102356                   RunQ                                syz-executor.0
102382                   S       connec  0xfffffe009002d0da  syz-executor.0
102388                   S       uwait   0xfffffe0092d99d80  syz-executor.0
 2437   788   788     0  S       (threaded)                  syz-executor.2
102348                   S       nanslp  0xffffffff83e339c1  syz-executor.2
102380                   S       sbwait  0xfffffe009002e5c4  syz-executor.2
 2281     1   792     0  S       umtxn   0xfffffe0092d9af00  syz-executor.3
 2275     1   792     0  S       uwait   0xfffffe0092d9bc80  syz-executor.3
 2274     1   792     0  S       uwait   0xfffffe0092d9c200  syz-executor.3
 2273     1   792     0  S       uwait   0xfffffe005731bb00  syz-executor.3
 2270     1   792     0  S       uwait   0xfffffe0092d9c100  syz-executor.3
 2234     0     0     0  DL      aiordy  0xfffffe009989ca90  [aiod4]
 2233     0     0     0  DL      aiordy  0xfffffe00998a0000  [aiod3]
 2232     0     0     0  DL      aiordy  0xfffffe00998a0548  [aiod2]
 2231     0     0     0  DL      aiordy  0xfffffe0097c41548  [aiod1]
 2035  2029  2035     0  Ss      select  0xfffffe0097d7af40  dhclient
 2032     1  2032     0  Ss      select  0xfffffe0097d7aec0  dhclient
 2029  2022   430    65  S       select  0xfffffe0097d7b040  dhclient
 2022   430   430     0  S       wait    0xfffffe0058c27548  sh
 2009     1  2009    65  Ss      select  0xfffffe0097d33740  dhclient
 1473     1  1473     0  Ss      select  0xfffffe0097d7bac0  dhclient
 1470     1  1470     0  Ss      select  0xfffffe00587acf40  dhclient
 1450     1  1450    65  Ss      select  0xfffffe0097d33340  dhclient
  998     1   998     0  Ss      select  0xfffffe0097d33dc0  dhclient
  995     1   995     0  Ss      select  0xfffffe00587a9540  dhclient
  877     1   780     0  S       uwait   0xfffffe0092d9c000  syz-executor.1
  864     1   780     0  S       uwait   0xfffffe0057875180  syz-executor.1
  861     1   780     0  S       uwait   0xfffffe005731a480  syz-executor.1
  856     1   780     0  S       uwait   0xfffffe005731be80  syz-executor.1
  792   774   792     0  Rs                                  syz-executor.3
  788   774   788     0  Rs                                  syz-executor.2
  780   774   780     0  Ss      nanslp  0xffffffff83e339c1  syz-executor.1
  779   774   779     0  Ss      nanslp  0xffffffff83e339c1  syz-executor.0
  774   772   772     0  S       (threaded)                  syz-fuzzer
100095                   S       uwait   0xfffffe005731ac00  syz-fuzzer
100114                   S       uwait   0xfffffe0057874d00  syz-fuzzer
100115                   S       uwait   0xfffffe0057874e00  syz-fuzzer
100116                   S       uwait   0xfffffe0057874f00  syz-fuzzer
100117                   S       uwait   0xfffffe0053decf00  syz-fuzzer
100118                   S       uwait   0xfffffe0092d9c300  syz-fuzzer
100119                   S       uwait   0xfffffe0057875080  syz-fuzzer
100120                   S       kqread  0xfffffe005792ae00  syz-fuzzer
100121                   S       uwait   0xfffffe0053dec200  syz-fuzzer
  772   770   772     0  Ss      pause   0xfffffe009007f0b0  csh
  770   688   770     0  Ss      select  0xfffffe0056f277c0  sshd
  754     1   754     0  Ss+     ttyin   0xfffffe0056f544b0  getty
  753     1   753     0  Ss+     ttyin   0xfffffe00579ba8b0  getty
  752     1   752     0  Ss+     ttyin   0xfffffe00579bacb0  getty
  751     1   751     0  Ss+     ttyin   0xfffffe00579bb0b0  getty
  750     1   750     0  Ss+     ttyin   0xfffffe00579bb4b0  getty
  749     1   749     0  Ss+     ttyin   0xfffffe00579bb8b0  getty
  748     1   748     0  Ss+     ttyin   0xfffffe00579bbcb0  getty
  747     1   747     0  Ss+     ttyin   0xfffffe00579bc0b0  getty
  746     1   746     0  Ss+     ttyin   0xfffffe00579bc4b0  getty
  692     1   692     0  Ss      nanslp  0xffffffff83e339c0  cron
  688     1   688     0  Ss      select  0xfffffe0056f278c0  sshd
  501     1   501     0  Ss      select  0xfffffe0056f27540  syslogd
  430     1   430     0  Ss      wait    0xfffffe0058c26548  devd
  429     1   429    65  Ss      select  0xfffffe0056f27740  dhclient
  344     1   344     0  Ss      select  0xfffffe0056f27840  dhclient
  341     1   341     0  Ss      select  0xfffffe0056f27ac0  dhclient
   17     0     0     0  DL      syncer  0xffffffff83f591c0  [syncer]
   16     0     0     0  DL      vlruwt  0xfffffe0056f7da90  [vnlru]
   15     0     0     0  DL      (threaded)                  [bufdaemon]
100078                   D       qsleep  0xffffffff83f577e0  [bufdaemon]
100081                   D       -       0xffffffff83211f80  [bufspacedaemon-0]
100093                   D       sdflush 0xfffffe0058ac50e8  [/ worker]
    9     0     0     0  DL      psleep  0xffffffff83f8acc0  [vmdaemon]
    8     0     0     0  DL      (threaded)                  [pagedaemon]
100076                   D       psleep  0xffffffff83f7eb78  [dom0]
100079                   D       launds  0xffffffff83f7eb84  [laundry: dom0]
100080                   D       umarcl  0xffffffff81e582c0  [uma]
    7     0     0     0  DL      -       0xffffffff83bef908  [rand_harvestq]
    6     0     0     0  DL      pftm    0xffffffff84b66530  [pf purge]
    5     0     0     0  DL      waiting 0xffffffff847ae4a0  [sctp_iterator]
    4     0     0     0  DL      (threaded)                  [cam]
100045                   D       -       0xffffffff83a918c0  [doneq0]
100046                   D       -       0xffffffff83a91840  [async]
100075                   D       -       0xffffffff83a916c0  [scanner]
   14     0     0     0  DL      seqstat 0xfffffe0053fc4488  [sequencer 00]
    3     0     0     0  DL      (threaded)                  [crypto]
100041                   D       crypto_ 0xffffffff83f7a3c0  [crypto]
100042                   D       crypto_ 0xfffffe0053f4a030  [crypto returns 0]
100043                   D       crypto_ 0xfffffe0053f4a080  [crypto returns 1]
   13     0     0     0  DL      (threaded)                  [geom]
100036                   D       -       0xffffffff83e090a0  [g_event]
100037                   D       -       0xffffffff83e090c0  [g_up]
100038                   D       -       0xffffffff83e090e0  [g_down]
    2     0     0     0  WL      (threaded)                  [clock]
100030                   I                                   [clock (0)]
100031                   I                                   [clock (1)]
   12     0     0     0  RL      (threaded)                  [intr]
100015                   I                                   [swi5: fast taskq]
100018                   I                                   [swi6: task queue]
100019                   I                                   [swi6: Giant taskq]
100029                   I                                   [swi1: netisr 0]
100032                   Run     CPU 0                       [swi1: hpts]
100033                   I                                   [swi1: hpts]
100034                   I                                   [swi3: busdma]
100047                   I                                   [irq24: virtio_pci0]
100048                   I                                   [irq25: virtio_pci0]
100049                   I                                   [irq26: virtio_pci0]
100050                   I                                   [irq27: virtio_pci0]
100051                   I                                   [irq28: virtio_pci1]
100052                   I                                   [irq29: virtio_pci1]
100053                   I                                   [irq30: virtio_pci1]
100054                   I                                   [irq31: virtio_pci1]
100055                   I                                   [irq32: virtio_pci1]
100060                   I                                   [irq10: virtio_pci2]
100062                   I                                   [irq1: atkbd0]
100063                   I                                   [irq12: psm0]
100064                   I                                   [swi0: uart uart++]
100068                   I                                   [swi1: pf send]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffffe0053de2000  [init]
   10     0     0     0  DL      audit_w 0xffffffff83f7aea0  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff83e09b40  [swapper]
100005                   D       -       0xfffffe000818d000  [softirq_0]
100006                   D       -       0xfffffe000818ce00  [softirq_1]
100007                   D       -       0xfffffe000818cd00  [if_io_tqg_0]
100008                   D       -       0xfffffe000818cc00  [if_io_tqg_1]
100009                   D       -       0xfffffe000818cb00  [if_config_tqg_0]
100010                   D       -       0xfffffe000818ca00  [linuxkpi_irq_wq]
100011                   D       -       0xfffffe000818c900  [inm_free taskq]
100012                   D       -       0xfffffe000818c800  [in6m_free taskq]
100013                   D       -       0xfffffe000818c700  [deferred_unmount ta]
100014                   D       -       0xfffffe000818c600  [thread taskq]
100016                   D       -       0xfffffe000818c400  [kqueue_ctx taskq]
100017                   D       -       0xfffffe000818c300  [pci_hp taskq]
100020                   D       -       0xfffffe000818c000  [aiod_kick taskq]
100021                   D       -       0xfffffe000818be00  [linuxkpi_short_wq_0]
100022                   D       -       0xfffffe000818be00  [linuxkpi_short_wq_1]
100023                   D       -       0xfffffe000818be00  [linuxkpi_short_wq_2]
100024                   D       -       0xfffffe000818be00  [linuxkpi_short_wq_3]
100025                   D       -       0xfffffe000818bd00  [linuxkpi_long_wq_0]
100026                   D       -       0xfffffe000818bd00  [linuxkpi_long_wq_1]
100027                   D       -       0xfffffe000818bd00  [linuxkpi_long_wq_2]
100028                   D       -       0xfffffe000818bd00  [linuxkpi_long_wq_3]
100035                   D       -       0xfffffe000818bb00  [firmware taskq]
100039                   D       -       0xfffffe000818b100  [crypto_0]
100040                   D       -       0xfffffe000818b100  [crypto_1]
100056                   D       -       0xfffffe0056fcc800  [vtnet0 rxq 0]
100057                   D       -       0xfffffe0056fcc700  [vtnet0 txq 0]
100058                   D       -       0xfffffe0056fcc600  [vtnet0 rxq 1]
100059                   D       -       0xfffffe0056fcc500  [vtnet0 txq 1]
100061                   D       vtbslp  0xfffffe0056f28280  [virtio_balloon]
100065                   D       -       0xffffffff82b5f320  [deadlkres]
100069                   D       -       0xfffffe000818ab00  [acpi_task_0]
100070                   D       -       0xfffffe000818ab00  [acpi_task_1]
100071                   D       -       0xfffffe000818ab00  [acpi_task_2]
100072                   D       -       0xfffffe000818d100  [mca taskq]
100074                   D       -       0xfffffe000818a900  [CAM taskq]
db> show all locks
Process 2442 (syz-executor.3) thread 0xfffffe0097d4f560 (102389)
exclusive rw tcpinp (tcpinp) r = 0 (0xfffffe00928d2010) locked @ /syzkaller/managers/main/kernel/sys/netinet/tcp_usrreq.c:1007
exclusive sx so_snd_sx (so_snd_sx) r = 0 (0xfffffe009002dc80) locked @ /syzkaller/managers/main/kernel/sys/kern/uipc_socket.c:4176
Process 2437 (syz-executor.2) thread 0xfffffe0097c0fc80 (102380)
exclusive sx so_rcv_sx (so_rcv_sx) r = 0 (0xfffffe009002e540) locked @ /syzkaller/managers/main/kernel/sys/kern/uipc_socket.c:4176
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
          tcp_hpts            6         4801K            6
            devbuf         4213         4323K         4241
         sysctloid        35454         2089K        35525
             vtbuf           24         1968K           46
              kobj          322         1288K          480
            newblk            6         1026K         2108
          vfscache            3         1025K            3
          inodedep          157          571K         1579
               pcb           42          559K         3371
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          150          303K         2525
          filedesc           36          281K         3011
            acpica         1674          184K        56282
         vnet_data            1          168K            1
              vmem            3          146K            5
           tidhash            3          141K            3
            linker          354          134K          382
           pagedep            9          130K         1499
        tfo_ccache            1          128K            1
            DEVFS1          109          109K          126
               sem            4          106K            4
               bus          973           80K         3426
          mtx_pool            2           72K            2
               BPF           38           71K           38
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          505           64K          505
           kdtrace          232           46K         4837
              umtx          352           44K          352
            dirrem          148           37K         1487
              temp           34           33K         2208
            DEVFS3          128           32K          138
         hostcache            1           32K            1
               shm            1           32K            1
               msg            4           30K            4
        gtaskqueue           18           26K           18
            kbdmux            6           22K            6
            ifaddr           70           20K           72
        DEVFS_RULE           56           20K           56
          freefile          145           19K         1476
         ufs_mount            4           17K            5
              proc            3           17K            3
               tty           16           16K           16
          routetbl          136           16K          428
           ithread           93           15K           93
           lltable           46           15K           49
            bus-sc           34           15K         1651
       ether_multi          157           13K          167
            KTRACE          100           13K          100
             ifnet            7           13K            7
              kenv           95           12K           95
      eventhandler          133           12K          133
         CAM queue            5           11K         1528
              GEOM           61           10K          488
              rman           84           10K          425
         in6_multi           71            9K           71
         bmsafemap            2            9K         1538
              UART           12            9K           12
           devstat            4            9K            4
              ksem            1            8K            1
               rpc            2            8K            2
             shmfd            1            8K            4
       pfs_vncache            1            8K            1
         sctp_timw           31            8K           31
         pfs_nodes           20            8K           20
     audit_evclass          237            8K          296
              cred           27            7K          230
         taskqueue           63            7K           63
            kqueue           70            7K         2452
            sglist            5            7K            5
         sctp_atcl           16            6K         1739
         sctp_stro            6            6K           83
           CAM DEV            3            6K          510
            plimit           23            6K          394
       ufs_dirhash           24            5K           24
               UMA          272            5K          272
          pf_ifnet           10            5K           19
           pwddesc           68            5K         2443
            DEVFSP           66            5K           83
                vt           11            5K           11
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
           session           31            4K           54
           acpisem           28            4K           28
         proc-args           97            4K         3700
             hhook           15            4K           17
          kcovinfo           52            4K           52
             lockf           28            3K           47
             selfd           45            3K        39240
          terminal           11            3K           11
           uidinfo            3            3K            8
        local_apic            1            2K            1
           io_apic            1            2K            1
       fpukern_ctx            2            2K            2
         ipsec-saq            2            2K            2
            select           16            2K           49
            ip6ndp           12            2K           15
          sctp_ifa           14            2K           15
            Unitno           27            2K           47
           CAM XPT           22            2K          543
          in_multi            6            2K            8
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
               msi            9            2K            9
             clone            9            2K            9
               tun            7            2K            7
          freework            5            2K         1478
           softdep            1            1K            1
             mkdir            8            1K         2952
          freeblks            4            1K         1477
            sahead            1            1K            1
          secasvar            1            1K            1
             nhops            6            1K            8
       vnodemarker            2            1K           56
      NFSD session            1            1K            1
         sctp_atky           22            1K         1902
        CAM periph            4            1K          271
             ipsec            3            1K            3
          sctp_ifn            6            1K           15
               mld            6            1K            6
              igmp            6            1K            6
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           89
          pci_link           10            1K           10
            crypto            4            1K           43
 encap_export_host           12            1K           12
       inpcbpolicy           17            1K         1960
         newdirblk            4            1K         1476
            diradd            4            1K         1524
              pfil            4            1K            4
          procdesc            4            1K           16
              cdev            2            1K            2
            CC Mem            7            1K         1722
               osd           11            1K         1733
    chacha20random            1            1K            1
         sctp_athm           16            1K         1739
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
            vnodes            1            1K            1
           CAM SIM            2            1K            2
            feeder            7            1K            7
          sctp_map           12            1K          166
           tcpfunc            3            1K            3
        loginclass            3            1K            6
            prison            6            1K            6
       lkpikmalloc            5            1K            6
            soname            7            1K         7404
        aesni_data            2            1K            2
          nexusdev            8            1K            8
            apmdev            1            1K            1
          atkbddev            2            1K            2
             xform            2            1K           81
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
          CAM path            4            1K         1034
          pmchooks            1            1K            1
          sctp_vrf            1            1K            1
              vnet            1            1K            1
           entropy            2            1K           41
               iov            1            1K        17471
          acpiintr            1            1K            1
               pmc            1            1K            1
          filecaps            4            1K          104
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          p1003.1b            1            1K            1
          pf_table            0            0K            0
           pf_rule            0            0K            0
           pf_altq            0            0K            0
           pf_osfp            0            0K            0
           pf_temp            0            0K            0
            mqdata            0            0K            0
            tcp_do            0            0K            0
           tcp_fsb            0            0K            0
        sctp_mcore            0            0K            0
        sctp_socko            0            0K          277
         sctp_iter            0            0K           11
         sctp_mvrf            0            0K            0
         sctp_cpal            0            0K            0
         sctp_cmsg            0            0K            0
         sctp_stre            0            0K            0
         sctp_athi            0            0K            0
         sctp_a_it            0            0K           11
         sctp_aadr            0            0K            0
         sctp_stri            0            0K            0
           filemon            0            0K            0
     NFSCL flayout            0            0K            0
      NFSCL layout            0            0K            0
        madt_table            0            0K            2
          smartpqi            0            0K            0
     NFSD rollback            0            0K            0
      NFSCL diroff            0            0K            0
       NEWdirectio            0            0K            0
               ixl            0            0K            0
        NEWNFSnode            0            0K            0
         NFSCL lck            0            0K            0
      NFSCL lckown            0            0K            0
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8321    1077      841656       0     254   38494208        0
              mbuf    256    8873     790     1291988       0     254    2473728        0
              pbuf   2624       0     794           0       0       2    2083456        0
          BUF TRIE    144     182   11606         776       0      62    1697472        0
        malloc-384    384    4189      41        4529       0      30    1624320        0
      mbuf_cluster   2048     762       0         762       0     254    1560576        0
        RADIX NODE    144   10460     147       74884       0      62    1527408        0
        malloc-128    128   11677     196       13209       0     126    1519744        0
       malloc-4096   4096     334       2         504       0       2    1376256        0
       UMA Slabs 0    112   10878      24       10878       0     126    1221024        0
         sctp_asoc   2288       6     504          83       0     254    1166880        0
         vmem btag     56   17452      83       17452       0     254     981960        0
         FFS inode   1160     521      25        1997       0       8     633360        0
           sctp_ep   1208      10     500        1656       0     254     616080        0
         VM OBJECT    264    2249      61       61874       0      30     609840        0
             tcpcb   1096       7     504        1722       0     254     560056        0
            socket    960      42     466        4891       0     254     487680        0
      malloc-65536  65536       4       3         140       0       1     458752        0
       malloc-2048   2048      15     201        2470       0       8     442368        0
            lkpimm    168       1    2327           1       0      62     391104        0
          lkpicurr    168       2    2326           2       0      62     391104        0
        sctp_raddr    736       6     511          83       0     254     380512        0
      malloc-16384  16384      19       4        1505       0       1     376832        0
        256 Bucket   2048     171       9        3865       0       8     368640        0
         MAP ENTRY     96    3088     314      178496       0     126     326592        0
            THREAD   1808     163      13        2393       0       8     318208        0
       tcp_bbr_map    128       6    2412       12066       0     126     309504        0
             VNODE    448     559     107        2037       0      30     298368        0
       malloc-4096   4096      68       4        2443       0       2     294912        0
         malloc-64     64    4147     200        6538       0     254     278208        0
         malloc-16     16   14671     329       14751       0     254     240000        0
        malloc-256    256     293     637        4872       0      62     238080        0
            DEVCTL   1024      15     205         154       0       0     225280        0
       mbuf_packet    256      19     743        2614       0     254     195072        0
         malloc-32     32    5413     509        7384       0     254     189504        0
         UMA Zones    768     244       0         244       0      16     187392        0
        malloc-128    128    1202     193       26285       0     126     178560        0
     FPU_save_area    832     165      33        7654       0      16     164736        0
       malloc-1024   1024     124      36         867       0      16     163840        0
       FFS2 dinode    256     521     109        1997       0      62     161280        0
       S VFS Cache    104    1013     391        2539       0     126     146016        0
           VMSPACE   2552      47      10        2423       0       4     145464        0
    ertt_txseginfo     40       0    3333       23746       0     254     133320        0
      malloc-65536  65536       2       0           2       0       1     131072        0
      malloc-65536  65536       2       0           2       0       1     131072        0
      malloc-65536  65536       0       2         140       0       1     131072        0
      malloc-32768  32768       0       4         120       0       1     131072        0
             unpcb    256      17     493        1242       0     254     130560        0
        malloc-384    384     156     174        1579       0      30     126720        0
        128 Bucket   1024      74      41         755       0      16     117760        0
          ksiginfo    112      71     973        5387       0     126     116928        0
        malloc-256    256      17     418        1569       0      62     111360        0
        malloc-256    256     190     245        7091       0      62     111360        0
        malloc-256    256     220     215        3357       0      62     111360        0
              PROC   1352      67      14        2442       0       8     109512        0
        malloc-128    128     549     226        4021       0     126      99200        0
        malloc-128    128     557     218        2022       0     126      99200        0
       malloc-8192   8192       7       5         137       0       1      98304        0
       malloc-2048   2048       6      42         575       0       8      98304        0
        malloc-384    384      17     223        1777       0      30      92160        0
         filedesc0   1072      68      16        2443       0       8      90048        0
          UMA Kegs    384     230       3         230       0      30      89472        0
         64 Bucket    512      92      76        3641       0      30      86016        0
         malloc-64     64     669     654        8348       0     254      84672        0
        sctp_chunk    152       7     513           7       0     254      79040        0
       malloc-4096   4096      18       0          21       0       2      73728        0
             g_bio    408       0     180        6229       0      30      73440        0
         malloc-64     64     640     431        1401       0     254      68544        0
        malloc-128    128     375     152        1290       0     126      67456        0
      malloc-65536  65536       1       0           1       0       1      65536        0
      malloc-32768  32768       2       0           2       0       1      65536        0
      malloc-16384  16384       4       0         164       0       1      65536        0
         32 Bucket    256      86     169        2235       0      62      65280        0
sctp_stream_msg_out    112       1     539           7       0     254      60480        0
         tcp_inpcb    424       7     119        1722       0      30      53424        0
         malloc-64     64      55     764       39311       0     254      52416        0
             Files     80     213     437       13552       0     126      52000        0
        malloc-128    128     144     259         674       0     126      51584        0
        malloc-128    128     139     264        4712       0     126      51584        0
        malloc-256    256     130      65         851       0      62      49920        0
           DIRHASH   1024      34      14          34       0      16      49152        0
             NAMEI   1024       0      48       20725       0      16      49152        0
       malloc-8192   8192       6       0           6       0       1      49152        0
       malloc-1024   1024      30      18          34       0      16      49152        0
              pipe    744      22      43         427       0      16      48360        0
        malloc-384    384      82      38          83       0      30      46080        0
       tcp_bbr_pcb    832       3      51         881       0      16      44928        0
          syncache    168       0     264           4       0     254      44352        0
            clpbuf   2624       0      16          31       0      16      41984        0
       malloc-8192   8192       5       0           5       0       1      40960        0
       malloc-4096   4096       8       2           8       0       2      40960        0
            pcpu-8      8    4720     400        4876       0     254      40960        0
       Mountpoints   2752       2      12           2       0       4      38528        0
         udp_inpcb    424       6      84         197       0      30      38160        0
            da_ccb    544       0      70        1672       0      16      38080        0
         malloc-64     64      86     481       15737       0     254      36288        0
         malloc-64     64     139     428         156       0     254      36288        0
         malloc-64     64       9     558          51       0     254      36288        0
        malloc-128    128       0     279          26       0     126      35712        0
     routing nhops    256      27     108          35       0      62      34560        0
           ttyoutq    256      72      63         160       0      62      34560        0
        malloc-256    256      15     120          17       0      62      34560        0
        malloc-256    256       2     133          17       0      62      34560        0
        malloc-256    256      13     122         341       0      62      34560        0
         TURNSTILE    136     177      75         177       0      62      34272        0
        SLEEPQUEUE     88     177     207         177       0     126      33792        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-16384  16384       1       1          16       0       1      32768        0
       malloc-8192   8192       3       1           5       0       1      32768        0
       malloc-4096   4096       4       4           7       0       2      32768        0
       malloc-2048   2048       8       8           8       0       8      32768        0
       malloc-2048   2048       2      14          26       0       8      32768        0
       malloc-2048   2048       8       8          10       0       8      32768        0
       malloc-2048   2048       1      15          54       0       8      32768        0
       malloc-1024   1024       8      24          16       0      16      32768        0
       malloc-1024   1024       8      24          85       0      16      32768        0
       malloc-1024   1024       6      26           6       0      16      32768        0
       malloc-1024   1024       0      32        1154       0      16      32768        0
        malloc-512    512       3      61          57       0      30      32768        0
        malloc-512    512      12      52         178       0      30      32768        0
        malloc-512    512       1      63          62       0      30      32768        0
        malloc-512    512       8      56          23       0      30      32768        0
           pcpu-64     64     484      28         484       0     254      32768        0
             KNOTE    160      28     172       44039       0      62      32000        0
            ttyinq    160     135      65         300       0      62      32000        0
            cpuset    104       7     272           7       0     126      29016        0
        sctp_laddr     48       0     588         221       0     254      28224        0
   tcp_inpcb ports     32       4     878         854       0     254      28224        0
               PWD     32      27     855        1569       0     254      28224        0
         malloc-32     32     298     584        6483       0     254      28224        0
         16 Bucket    144      62     134         277       0      62      28224        0
          4 Bucket     48       6     582          83       0     254      28224        0
               AIO    208       1     132           9       0      62      27664        0
             ripcb    424       4      59          38       0      30      26712        0
       malloc-8192   8192       3       0           3       0       1      24576        0
       malloc-4096   4096       3       3         626       0       2      24576        0
       malloc-4096   4096       1       5        1703       0       2      24576        0
           rtentry    176      31     107          35       0      62      24288        0
              PGRP     88      31     245          58       0     126      24288        0
          rl_entry     40      52     554          52       0     254      24240        0
          8 Bucket     80      67     233        1097       0     126      24000        0
        malloc-384    384      23      37          25       0      30      23040        0
        malloc-384    384      36      24          61       0      30      23040        0
        malloc-384    384      28      32          28       0      30      23040        0
         hostcache     64       1     314           1       0     254      20160        0
             udpcb     32       6     624         200       0     254      20160        0
   udp_inpcb ports     32       3     627          33       0     254      20160        0
              ertt     72       7     273        1722       0     126      20160        0
         malloc-64     64       3     312           4       0     254      20160        0
         malloc-32     32      36     594        2065       0     254      20160        0
         malloc-32     32      90     540         123       0     254      20160        0
         malloc-32     32     137     493        1401       0     254      20160        0
         malloc-32     32     143     487         188       0     254      20160        0
         malloc-32     32      22     608        1083       0     254      20160        0
          2 Bucket     32      55     575         488       0     254      20160        0
             AIOCB    552       0      35          25       0      16      19320        0
            AIOLIO    272       0      70           7       0      30      19040        0
 epoch_record pcpu    256       4      60           4       0      62      16384        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-4096   4096       1       3           4       0       2      16384        0
       malloc-2048   2048       3       5           3       0       8      16384        0
       malloc-2048   2048       2       6           2       0       8      16384        0
       malloc-1024   1024       2      14           2       0      16      16384        0
        malloc-512    512       0      32           1       0      30      16384        0
           SMR CPU     32       7     504           7       0     254      16352        0
      vtnet_tx_hdr     24       0     668      418689       0     254      16032        0
         malloc-16     16     508     492        1771       0     254      16000        0
              kenv    258      15      45        1042       0      30      15480        0
     udplite_inpcb    424       0      36           3       0      30      15264        0
            mqnode    416       3      33           3       0      30      14976        0
              vmem   1856       1       7           1       0       8      14848        0
        SMR SHARED     24       7     504           7       0     254      12264        0
              AIOP     32       4     374           4       0     254      12096        0
         malloc-32     32       6     372           6       0     254      12096        0
         malloc-16     16      51     699        7185       0     254      12000        0
         malloc-16     16      31     719         145       0     254      12000        0
         malloc-16     16      38     712       27553       0     254      12000        0
         malloc-16     16       2     748           3       0     254      12000        0
         malloc-16     16      54     696        1989       0     254      12000        0
        malloc-384    384       1      29           1       0      30      11520        0
       malloc-8192   8192       1       0           1       0       1       8192        0
           pcpu-16     16      14     498          14       0     254       8192        0
         malloc-16     16       7     493           9       0     254       8000        0
       UMA Slabs 1    176       9      13           9       0      62       3872        0
        KMAP ENTRY     96      12      27          14       0       0       3744        0
       FFS1 dinode    128       0       0           0       0     126          0        0
           ada_ccb    272       0       0           0       0      30          0        0
             swblk    136       0       0           0       0      62          0        0
          swpctrie    144       0       0           0       0      62          0        0
   cdg_qdiffsample     16       0       0           0       0     254          0        0
   pf state scrubs     40       0       0           0       0     254          0        0
   pf frag entries     40       0       0           0       0     254          0        0
          pf frags    248       0       0           0       0      62          0        0
  pf table entries    160       0       0           0       0      62          0        0
pf table entry counters     64       0       0           0       0     254          0        0
   pf source nodes    136       0       0           0       0     254          0        0
     pf state keys     88       0       0           0       0     126          0        0
         pf states    312       0       0           0       0     254          0        0
           pf tags    104       0       0           0       0     126          0        0
          pf mtags     48       0       0           0       0     254          0        0
      tcp_rack_pcb    896       0       0           0       0      16          0        0
      tcp_rack_map    120       0       0           0       0     126          0        0
tfo_ccache_entries     80       0       0           0       0     126          0        0
               tfo      4       0       0           0       0     254          0        0
          sackhole     32       0       0           0       0     254          0        0
             tcptw     72       0       0           0       0     254          0        0
               ipq     56       0       0           0       0     254          0        0
      tcp_log_node    120       0       0           0       0     126          0        0
    tcp_log_bucket    176       0       0           0       0      62          0        0
           tcp_log    416       0       0           0       0     254          0        0
          tcpreass     48       0       0           0       0     254          0        0
   sctp_asconf_ack     48       0       0           0       0     254          0        0
       sctp_asconf     40       0       0           0       0     254          0        0
        sctp_readq    152       0       0           0       0     254          0        0
       ripcb ports     32       0       0           0       0     254          0        0
udplite_inpcb ports     32       0       0           0       0     254          0        0
    IPsec SA lft_c     16       0       0           0       0     254          0        0
            itimer    352       0       0           0       0      30          0        0
        mqnotifier    216       0       0           0       0      62          0        0
            mvdata     64       0       0           0       0     254          0        0
            mqueue    248       0       0           0       0      62          0        0
           NCLNODE    608       0       0           0       0      16          0        0
        TMPFS node    224       0       0           0       0      62          0        0
     LTS VFS Cache    360       0       0           0       0      30          0        0
       L VFS Cache    320       0       0           0       0      30          0        0
     STS VFS Cache    144       0       0           0       0      62          0        0
           cryptop    280       0       0           0       0      30          0        0
  linux_dma_object     32       0       0           0       0     254          0        0
  linux_dma_pctrie    144       0       0           0       0      62          0        0
   IOMMU_MAP_ENTRY    120       0       0           0       0     126          0        0
    mbuf_jumbo_16k  16384       0       0           0       0     254          0        0
     mbuf_jumbo_9k   9216       0       0           0       0     254          0        0
      audit_record   1280       0       0           0       0       8          0        0
         domainset     40       0       0           0       0     254          0        0
        MAC labels     40       0       0           0       0     254          0        0
            vnpbuf   2624       0       0           0       0      64          0        0
            mdpbuf   2624       0       0           0       0       3          0        0
           nfspbuf   2624       0       0           0       0      16          0        0
            swwbuf   2624       0       0           0       0       8          0        0
            swrbuf   2624       0       0           0       0      16          0        0
          umtx_shm     88       0       0           0       0     126          0        0
           umtx pi     96       0       0           0       0     126          0        0
rangeset pctrie nodes    144       0       0           0       0      62          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
       malloc-8192   8192       0       0           0       0       1          0        0
       malloc-8192   8192       0       0           0       0       1          0        0
       malloc-1024   1024       0       0           0       0      16          0        0
        malloc-512    512       0       0           0       0      30          0        0
        malloc-512    512       0       0           0       0      30          0        0
        malloc-512    512       0       0           0       0      30          0        0
           pcpu-32     32       0       0           0       0     254          0        0
            pcpu-4      4       0       0           0       0     254          0        0
            fakepg    104       0       0           0       0     126          0        0
          UMA Hash    256       0       0           0       0      62          0        0

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/01/11 21:54 freebsd-src ebc1c246955d 44d1319a console log report ci-freebsd-main panic: TCP stack bbr requested tcp_drop(ADDR) at connect()
* Struck through repros no longer work on HEAD.