syzbot


panic: _mtx_lock_sleep: recursed on non-recursive mutex sctp-create @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_p

Status: auto-closed as invalid on 2021/05/10 00:43
Reported-by: syzbot+c11212b62daf506133ef@syzkaller.appspotmail.com
First crash: 1381d, last: 1381d

Sample crash report:
panic: _mtx_lock_sleep: recursed on non-recursive mutex sctp-create @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_pcb.c:3330

cpuid = 1
time = 57
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0003778ca0
vpanic() at vpanic+0x1c7/frame 0xfffffe0003778d00
panic() at panic+0x43/frame 0xfffffe0003778d60
__mtx_lock_sleep() at __mtx_lock_sleep+0x6e9/frame 0xfffffe0003778df0
__mtx_lock_flags() at __mtx_lock_flags+0x150/frame 0xfffffe0003778e50
sctp_inpcb_free() at sctp_inpcb_free+0x2b6/frame 0xfffffe0003778ed0
sctp_free_assoc() at sctp_free_assoc+0x2890/frame 0xfffffe0003778f60
sctp_process_cookie_new() at sctp_process_cookie_new+0x3c4/frame 0xfffffe0003779250
sctp_process_control() at sctp_process_control+0x511e/frame 0xfffffe0003779750
sctp_common_input_processing() at sctp_common_input_processing+0x7db/frame 0xfffffe00037798e0
sctp_input_with_port() at sctp_input_with_port+0x306/frame 0xfffffe00037799d0
sctp_input() at sctp_input+0x1f/frame 0xfffffe00037799f0
ip_input() at ip_input+0x388/frame 0xfffffe0003779a90
swi_net() at swi_net+0x20d/frame 0xfffffe0003779b10
ithread_loop() at ithread_loop+0x33f/frame 0xfffffe0003779bb0
fork_exit() at fork_exit+0xb3/frame 0xfffffe0003779bf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0003779bf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 12 tid 100032 ]
Stopped at      kdb_enter+0x67: movq    $0,0x1444c4e(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b
es                        0x3b
fs                        0x13
gs                        0x1b
ss                           0
rax                       0x12
rcx         0xffffffff8112a920  vprintf+0x140
rdx                        0x1
rbx                          0
rsp         0xfffffe0003778c80
rbp         0xfffffe0003778ca0
rsi                          0
rdi         0xffffffff8112a956  vprintf+0x176
r8                           0
r9          0x8080808080808080
r10         0xfffffe0003778b70
r11               0xff00ff0100
r12         0xffffffff820678b0  ddb_dbbe
r13                          0
r14         0xffffffff81a49848
r15         0xffffffff81a49848
rip         0xffffffff81121937  kdb_enter+0x67
rflags                    0x82
kdb_enter+0x67: movq    $0,0x1444c4e(%rip)
db> show proc
Process 12 (intr) at 0xfffff800044b1a50:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff82519af0
 ABI: null
 flag: 0x10000284  flag2: 0
 reaper: 0xffffffff82519af0 reapsubtree: 12
 sigparent: 20
 vmspace: 0xffffffff8251a740
   (map 0xffffffff8251a740)
   (map.pmap 0xffffffff8251a800)
   (pmap 0xffffffff8251a860)
 threads: 23
100010                   I                                   [swi6: Giant taskq]
100015                   I                                   [swi5: fast taskq]
100017                   I                                   [swi6: task queue]
100029                   I                                   [swi4: clock (0)]
100030                   I                                   [swi4: clock (1)]
100031                   I                                   [swi3: vm]
100032                   Run     CPU 1                       [swi1: netisr 0]
100044                   I                                   [irq24: virtio_pci0]
100045                   I                                   [irq25: virtio_pci0]
100046                   I                                   [irq26: virtio_pci0]
100047                   I                                   [irq27: virtio_pci0]
100048                   I                                   [irq28: virtio_pci1]
100049                   I                                   [irq29: virtio_pci1]
100050                   I                                   [irq30: virtio_pci1]
100051                   I                                   [irq31: virtio_pci1]
100052                   I                                   [irq32: virtio_pci1]
100057                   I                                   [irq10: virtio_pci2]
100059                   I                                   [irq1: atkbd0]
100060                   I                                   [irq12: psm0]
100061                   I                                   [swi0: uart uart++]
100069                   I                                   [swi1: pf send]
100082                   I                                   [swi1: hpts]
100083                   I                                   [swi1: hpts]
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 6484   815   815     0  R       (threaded)                  syz-executor.2
100090                   RunQ                                syz-executor.2
107226                   RunQ                                syz-executor.2
107227                   RunQ                                syz-executor.2
 6483   816   816     0  R       (threaded)                  syz-executor.3
100197                   RunQ                                syz-executor.3
107223                   S       connec  0xfffff8002f5c30e0  syz-executor.3
107225                   S       uwait   0xfffff80018ed5700  syz-executor.3
 6481   786   786     0  LE     *sctp-cr 0xfffff800182d5900  syz-executor.1
 6480   785   785     0  T       (threaded)                  syz-executor.0
101816                   s                                   syz-executor.0
107216                   Run     CPU 0                       syz-executor.0
 3488     1  3488    65  Ss      select  0xfffff800182e7c40  dhclient
 3004     1  3004     0  Ss      select  0xfffff800182e7cc0  dhclient
 3001     1  3001     0  Ss      select  0xfffff80018f94cc0  dhclient
 2982     1  2982    65  Ss      select  0xfffff800182e7540  dhclient
 2357     1  2357     0  Ss      select  0xfffff80018f94c40  dhclient
 2351     1  2351     0  Ss      select  0xfffff80018f94d40  dhclient
 2332     1  2332    65  Ss      select  0xfffff80018f94dc0  dhclient
 1685     1  1685     0  Ss      select  0xfffff800182e7040  dhclient
 1682     1  1682     0  Ss      select  0xfffff800182e70c0  dhclient
 1658     1  1658    65  Ss      select  0xfffff800182e71c0  dhclient
 1036     1  1036     0  Ss      select  0xfffff800182e74c0  dhclient
 1033     1  1033     0  Ss      select  0xfffff80004b366c0  dhclient
  816   780   816     0  Rs                                  syz-executor.3
  815   780   815     0  Rs                                  syz-executor.2
  786   780   786     0  Rs                                  syz-executor.1
  785   780   785     0  Rs                                  syz-executor.0
  780   778   778     0  S       (threaded)                  syz-fuzzer
100098                   S       uwait   0xfffff80004a89900  syz-fuzzer
100120                   S       uwait   0xfffff80004d36e00  syz-fuzzer
100121                   S       uwait   0xfffff80004d36f00  syz-fuzzer
100122                   S       uwait   0xfffff80004b5e080  syz-fuzzer
100123                   S       kqread  0xfffff80004f27400  syz-fuzzer
100124                   S       uwait   0xfffff80018229600  syz-fuzzer
100125                   S       uwait   0xfffff80004b5e280  syz-fuzzer
100126                   S       uwait   0xfffff800184c5d80  syz-fuzzer
100127                   S       uwait   0xfffff80018a29e00  syz-fuzzer
  778   776   778     0  Ss      pause   0xfffff80004ed2b00  csh
  776   694   776     0  Ss      select  0xfffff800182e73c0  sshd
  760     1   760     0  Ss+     ttyin   0xfffff8000485e4b0  getty
  759     1   759     0  Ss+     ttyin   0xfffff80004bb5cb0  getty
  758     1   758     0  Ss+     ttyin   0xfffff80004bb94b0  getty
  757     1   757     0  Ss+     ttyin   0xfffff80004bb9cb0  getty
  756     1   756     0  Ss+     ttyin   0xfffff80004b414b0  getty
  755     1   755     0  Ss+     ttyin   0xfffff80004b41cb0  getty
  754     1   754     0  Ss+     ttyin   0xfffff80004b474b0  getty
  753     1   753     0  Ss+     ttyin   0xfffff80004b47cb0  getty
  752     1   752     0  Ss+     ttyin   0xfffff80004b4c4b0  getty
  698     1   698     0  Ss      nanslp  0xffffffff82539d21  cron
  694     1   694     0  Ss      select  0xfffff800182e76c0  sshd
  507     1   507     0  Ss      select  0xfffff800182c5f40  syslogd
  436     1   436     0  Ss      select  0xfffff800182e7740  devd
  435     1   435    65  Ss      select  0xfffff800182e7e40  dhclient
  350     1   350     0  Ss      select  0xfffff800182e7dc0  dhclient
  347     1   347     0  Ss      select  0xfffff800182e7640  dhclient
   23     0     0     0  DL      vlruwt  0xfffff80004d55528  [vnlru]
   22     0     0     0  DL      syncer  0xffffffff82629138  [syncer]
   21     0     0     0  DL      (threaded)                  [bufdaemon]
100079                   D       qsleep  0xffffffff82628200  [bufdaemon]
100084                   D       -       0xffffffff8200ad00  [bufspacedaemon-0]
100093                   D       sdflush 0xfffff80004dfa8e8  [/ worker]
   20     0     0     0  DL      psleep  0xffffffff82650008  [vmdaemon]
   19     0     0     0  RL      (threaded)                  [pagedaemon]
100077                   RunQ                                [dom0]
100085                   D       launds  0xffffffff82644484  [laundry: dom0]
100086                   D       umarcl  0xffffffff815a8850  [uma]
   18     0     0     0  DL      -       0xffffffff8236e0a8  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff82d7d818  [sctp_iterator]
   16     0     0     0  DL      pftm    0xffffffff82b73430  [pf purge]
   15     0     0     0  DL      -       0xffffffff8262585c  [soaiod4]
    9     0     0     0  DL      -       0xffffffff8262585c  [soaiod3]
    8     0     0     0  DL      -       0xffffffff8262585c  [soaiod2]
    7     0     0     0  DL      -       0xffffffff8262585c  [soaiod1]
    6     0     0     0  DL      (threaded)                  [cam]
100043                   D       -       0xffffffff822459c0  [doneq0]
100076                   D       -       0xffffffff82245890  [scanner]
   14     0     0     0  DL      seqstat 0xfffff80004614488  [sequencer 00]
    5     0     0     0  DL      crypto_ 0xfffff80004342490  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffff80004342430  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff82641960  [crypto]
   13     0     0     0  DL      (threaded)                  [geom]
100034                   D       -       0xffffffff82519560  [g_event]
100035                   D       -       0xffffffff82519568  [g_up]
100036                   D       -       0xffffffff82519570  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100027                   D       -       0xfffff80004342700  [thr_0]
100028                   D       -       0xfffff80004342780  [thr_1]
   12     0     0     0  RL      (threaded)                  [intr]
100010                   I                                   [swi6: Giant taskq]
100015                   I                                   [swi5: fast taskq]
100017                   I                                   [swi6: task queue]
100029                   I                                   [swi4: clock (0)]
100030                   I                                   [swi4: clock (1)]
100031                   I                                   [swi3: vm]
100032                   Run     CPU 1                       [swi1: netisr 0]
100044                   I                                   [irq24: virtio_pci0]
100045                   I                                   [irq25: virtio_pci0]
100046                   I                                   [irq26: virtio_pci0]
100047                   I                                   [irq27: virtio_pci0]
100048                   I                                   [irq28: virtio_pci1]
100049                   I                                   [irq29: virtio_pci1]
100050                   I                                   [irq30: virtio_pci1]
100051                   I                                   [irq31: virtio_pci1]
100052                   I                                   [irq32: virtio_pci1]
100057                   I                                   [irq10: virtio_pci2]
100059                   I                                   [irq1: atkbd0]
100060                   I                                   [irq12: psm0]
100061                   I                                   [swi0: uart uart++]
100069                   I                                   [swi1: pf send]
100082                   I                                   [swi1: hpts]
100083                   I                                   [swi1: hpts]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffff80004457528  [init]
   10     0     0     0  DL      audit_w 0xffffffff82641e80  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff82519af0  [swapper]
100005                   D       -       0xfffff80004342c00  [if_io_tqg_0]
100006                   D       -       0xfffff80004342b00  [if_io_tqg_1]
100007                   D       -       0xfffff80004342a00  [if_config_tqg_0]
100008                   D       -       0xfffff80004342900  [softirq_0]
100009                   D       -       0xfffff80004342800  [softirq_1]
100011                   D       -       0xfffff8000408c800  [inm_free taskq]
100012                   D       -       0xfffff8000408c700  [linuxkpi_irq_wq]
100013                   D       -       0xfffff8000408c600  [thread taskq]
100014                   D       -       0xfffff8000408c500  [aiod_kick taskq]
100016                   D       -       0xfffff8000408c300  [kqueue_ctx taskq]
100018                   D       -       0xfffff8000408c100  [in6m_free taskq]
100019                   D       -       0xfffff8000408c000  [linuxkpi_short_wq_0]
100020                   D       -       0xfffff8000408c000  [linuxkpi_short_wq_1]
100021                   D       -       0xfffff8000408c000  [linuxkpi_short_wq_2]
100022                   D       -       0xfffff8000408c000  [linuxkpi_short_wq_3]
100023                   D       -       0xfffff800044ace00  [linuxkpi_long_wq_0]
100024                   D       -       0xfffff800044ace00  [linuxkpi_long_wq_1]
100025                   D       -       0xfffff800044ace00  [linuxkpi_long_wq_2]
100026                   D       -       0xfffff800044ace00  [linuxkpi_long_wq_3]
100033                   D       -       0xfffff800044acd00  [firmware taskq]
100037                   D       -       0xfffff800044acc00  [crypto_0]
100038                   D       -       0xfffff800044acc00  [crypto_1]
100053                   D       -       0xfffff800044ac700  [vtnet0 rxq 0]
100054                   D       -       0xfffff800044ac600  [vtnet0 txq 0]
100055                   D       -       0xfffff800044ac500  [vtnet0 rxq 1]
100056                   D       -       0xfffff800044ac400  [vtnet0 txq 1]
100058                   D       vtbslp  0xfffff80004868e80  [virtio_balloon]
100062                   D       -       0xfffff800044ac300  [mca taskq]
100066                   D       -       0xffffffff81df4800  [deadlkres]
100071                   D       -       0xfffff800044f3d00  [acpi_task_0]
100072                   D       -       0xfffff800044f3d00  [acpi_task_1]
100073                   D       -       0xfffff800044f3d00  [acpi_task_2]
100075                   D       -       0xfffff800044aca00  [CAM taskq]
db> show all locks
Process 6480 (syz-executor.0) thread 0xfffffe0094c44800 (107216)
exclusive sleep mutex pmap (pmap) r = 0 (0xffffffff8267d740) locked @ /syzkaller/managers/i386/kernel/sys/amd64/amd64/pmap.c:6039
Process 19 (pagedaemon) thread 0xfffffe0051d8e100 (100077)
shared rw vnet_rwlock (vnet_rwlock) r = 0 (0xffffffff8262b028) locked @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_pcb.c:6975
Process 12 (intr) thread 0xfffffe0004126500 (100032)
exclusive sleep mutex sctp-create (inp_create) r = 0 (0xfffff8002f629988) locked @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_input.c:4972
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
            devbuf         4216         4340K         4244
          tcp_hpts            5         3201K            5
             vtbuf           24         1968K           46
         sysctloid        30827         1808K        30893
              kobj          331         1324K          491
            newblk            5         1025K         7946
          vfscache            3         1025K            3
               pcb          356          898K        11898
          inodedep           29          523K         7292
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          145          283K         6569
            acpica         1674          184K        56345
         vnet_data            1          168K            1
         sctp_stro          157          157K         2709
           tidhash            3          141K            3
          filedesc           18          137K        11027
           pagedep            9          130K        11513
        tfo_ccache            1          128K            1
         sctp_atcl          319          120K         8696
            DEVFS1          106          106K          123
               sem            4          106K            4
            linker          285          101K          320
               BPF           46           88K           46
               bus          989           81K         3493
          mtx_pool            2           72K            2
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          505           64K          505
              umtx          360           45K          360
           kdtrace          222           44K        13713
              temp           36           35K         2891
         hostcache            1           32K            1
               shm            1           32K           10
            DEVFS3          125           32K          135
               msg            4           30K            4
              vmem            3           26K            4
        gtaskqueue           18           26K           18
            kbdmux            6           22K            6
            ifaddr           72           21K           72
         sctp_atky          477           20K        11566
        DEVFS_RULE           56           20K           56
         sctp_timw           78           20K           78
         ufs_mount            5           17K            6
              proc            3           17K            3
               tty           16           16K           16
           ithread           99           16K           99
           lltable           45           14K          101
            bus-sc           32           14K         1718
            KTRACE          100           13K          100
             ifnet            7           13K            7
       ether_multi          152           13K          170
              kenv           93           12K           93
      eventhandler          133           12K          133
              GEOM           60           10K          489
              rman           82           10K          423
         in6_multi           65            9K           65
         bmsafemap            2            9K         5916
              UART           12            9K           12
           devstat            4            9K            4
              ksem            1            8K          126
               rpc            2            8K            2
             shmfd            1            8K           65
       pfs_vncache            1            8K            1
         pfs_nodes           20            8K           20
     audit_evclass          236            8K          294
              cred           26            7K          312
            kqueue           65            7K         6509
            sglist            5            7K            5
           CAM DEV            3            6K          510
            plimit           24            6K          437
         taskqueue           57            6K           57
         CAM queue            5            6K         1528
            dirrem           20            5K         5739
         sctp_athm          319            5K         8783
          sctp_map          314            5K         5332
            DEVFSP           78            5K           82
       ufs_dirhash           24            5K           24
           session           35            5K           50
          pf_ifnet           10            5K           51
               UMA          262            5K          262
                vt           11            5K           11
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
          kcovinfo           64            4K           68
           pwddesc           62            4K         6485
          routetbl           24            4K          204
             selfd           55            4K        92946
             lockf           32            4K          613
             hhook           13            4K           13
       fpukern_ctx            3            3K            3
         proc-args           52            3K          675
           acpisem           22            3K           22
          terminal           11            3K           11
          freefile           20            3K         5729
           uidinfo            5            3K           17
            select           19            3K          153
        local_apic            1            2K            1
           io_apic            1            2K            1
         ipsec-saq            2            2K            2
            ip6ndp           12            2K           14
          sctp_ifa           13            2K           14
            Unitno           27            2K           47
           CAM XPT           22            2K          543
          in_multi            6            2K           12
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
               msi            9            2K            9
             clone            9            2K            9
               tun            7            2K            7
         sctp_stri            2            1K          417
           pf_rule            1            1K           33
           softdep            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
             nhops            6            1K            8
       vnodemarker            2            1K           44
      NFSD session            1            1K            1
        CAM periph            4            1K          271
             ipsec            3            1K            3
          sctp_ifn            6            1K           14
               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
       inpcbpolicy           21            1K         1455
             mkdir            5            1K        11030
            crypto            4            1K            4
 encap_export_host           12            1K           12
          procdesc            5            1K           18
      linuxcurrent            3            1K            4
         newdirblk            4            1K         5515
            diradd            4            1K         5778
              pfil            4            1K            4
           CAM SIM            2            1K            2
              cdev            2            1K            2
    chacha20random            1            1K            1
           pf_osfp            3            1K            3
               osd            3            1K           10
            vnodes            1            1K            5
              ktls            1            1K            1
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
            feeder            7            1K            7
           tcpfunc            3            1K            3
        loginclass            3            1K            6
            prison            6            1K            6
             linux            5            1K            6
        aesni_data            2            1K            2
            soname            6            1K         8662
            apmdev            1            1K            1
     CAM dev queue            2            1K            2
          atkbddev            2            1K            2
 CAM I/O Scheduler            1            1K            1
          freework            1            1K         6285
          CAM path            4            1K         1034
          pmchooks            1            1K            1
          nexusdev            6            1K            6
          filecaps            5            1K          112
          sctp_vrf            1            1K            1
              vnet            1            1K            1
           entropy            2            1K           42
          acpiintr            1            1K            1
               pmc            1            1K            1
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
               iov            1            1K        18433
          p1003.1b            1            1K            1
            mqdata            0            0K            0
        sctp_mcore            0            0K            0
        sctp_socko            0            0K         4550
         sctp_iter            0            0K           16
         sctp_mvrf            0            0K            0
         sctp_cpal            0            0K            7
         sctp_cmsg            0            0K            0
         sctp_stre            0            0K            0
         sctp_athi            0            0K            0
         sctp_a_it            0            0K            9
         sctp_aadr            0            0K            0
          pf_table            0            0K           45
           pf_altq            0            0K            0
           pf_temp            0            0K            0
            DEVFS4            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     950     1266622       0     254   37974016        0
        RADIX NODE    144   32851     158      249422       0      62    4753296        0
              mbuf    256    9024    1911     2750119       0     254    2799360        0
              pbuf   2632       0     989           0       0       2    2603048        0
           tcp_log    416       0    6102       32485       0     254    2538432        0
          BUF TRIE    144     182   13286        8741       0      62    1939392        0
        malloc-384    384    4130      20        4177       0      30    1593600        0
       malloc-4096   4096     334       5        6194       0       2    1388544        0
        malloc-128    128   10225      67       13675       0     126    1317376        0
      mbuf_cluster   2048     615       1         615       0     254    1261568        0
       UMA Slabs 0    112   10653       0       10653       0     126    1193136        0
       tcp_bbr_map    128       0    5084       71645       0     126     650752        0
         FFS inode   1128     514      25        6249       0       8     607992        0
      malloc-65536  65536       6       3         214       0       1     589824        0
         sctp_asoc   2288     157      43        2666       0     254     457600        0
       malloc-2048   2048     162      44        5820       0       8     421888        0
       malloc-4096   4096      85       5        7108       0       2     368640        0
        256 Bucket   2048     172       6       18549       0       8     364544        0
         VM OBJECT    264    1315      65       94713       0      30     364320        0
            THREAD   1792     158      22        7227       0       8     322560        0
             VNODE    488     550      82        6287       0      30     308416        0
           sctp_ep   1280     160      47        5562       0     254     264960        0
      malloc-65536  65536       0       4          11       0       1     262144        0
      malloc-32768  32768       1       7           8       0       1     262144        0
      malloc-16384  16384      12       4        5521       0       1     262144        0
        sctp_raddr    736     162     190        3769       0     254     259072        0
         malloc-64     64    3405     564       12816       0     254     254016        0
      malloc-32768  32768       0       7        1210       0       1     229376        0
            DEVCTL   1024       0     216         130       0       0     221184        0
         malloc-16     16   13118     382       24467       0     254     216000        0
       malloc-1024   1024     160      40        2700       0      16     204800        0
         MAP ENTRY     96    1684     290      356453       0     126     189504        0
         malloc-32     32    5465     205       17671       0     254     181440        0
         UMA Zones    768     234       0         234       0      16     179712        0
        malloc-384    384     372      88        8749       0      30     176640        0
       FFS2 dinode    256     514     131        6248       0      62     165120        0
       mbuf_packet    256     102     513       16205       0     254     157440        0
        malloc-128    128    1182      27       26504       0     126     154752        0
       malloc-1024   1024     136       8        1514       0      16     147456        0
       S VFS Cache    104    1019     385        6834       0     126     146016        0
        malloc-256    256      15     525        7981       0      62     138240        0
        128 Bucket   1024      94      37        1876       0      16     134144        0
      malloc-65536  65536       0       2          18       0       1     131072        0
      malloc-65536  65536       0       2         136       0       1     131072        0
      malloc-65536  65536       2       0           2       0       1     131072        0
      malloc-65536  65536       1       1           9       0       1     131072        0
        malloc-128    128    1005      18        1021       0     126     130944        0
           VMSPACE   2544      40      11        6468       0       4     129744        0
         vmem btag     56    2194      98        2194       0     254     128352        0
        sctp_chunk    152      95     737        5808       0     254     126464        0
          ksiginfo    112      66     978        1293       0     126     116928        0
        malloc-256    256     197     238       35040       0      62     111360        0
       malloc-2048   2048       7      47       18672       0       8     110592        0
            socket    944      51      65        8746       0     254     109504        0
              PROC   1320      62      19        6484       0       8     106920        0
         64 Bucket    512      77      99       12766       0      30      90112        0
         filedesc0   1072      63      21        6485       0       8      90048        0
        malloc-256    256     220     125        7685       0      62      88320        0
          UMA Kegs    384     220       3         220       0      30      85632        0
        malloc-128    128     382     269       11820       0     126      83328        0
         malloc-64     64     668     529       24153       0     254      76608        0
             g_bio    408       0     180       72061       0      30      73440        0
        malloc-384    384      29     151        7382       0      30      69120        0
      malloc-32768  32768       1       1           3       0       1      65536        0
        malloc-256    256     194      61        6282       0      62      65280        0
             tcpcb   1048      14      41         914       0     254      57640        0
       malloc-4096   4096      11       3          38       0       2      57344        0
       malloc-4096   4096      12       1          23       0       2      53248        0
       malloc-2048   2048      17       9         634       0       8      53248        0
         malloc-64     64     450     369       93500       0     254      52416        0
         32 Bucket    256      61     134        7663       0      62      49920        0
       malloc-8192   8192       5       1           7       0       1      49152        0
        malloc-128    128      53     319       11599       0     126      47616        0
        malloc-128    128      96     276        6614       0     126      47616        0
        malloc-384    384     103      17         507       0      30      46080        0
            pcpu-8      8    4621    1011        5719       0     254      45056        0
         malloc-64     64     180     513        6603       0     254      44352        0
         tcp_inpcb    488      14      74         914       0     254      42944        0
        malloc-256    256     135      30        1204       0      62      42240        0
            clpbuf   2632       0      16          19       0      16      42112        0
       malloc-8192   8192       5       0           5       0       1      40960        0
       malloc-2048   2048       4      16         240       0       8      40960        0
           DIRHASH   1024      34       2          34       0      16      36864        0
             NAMEI   1024       0      36       37968       0      16      36864        0
         malloc-64     64     449     118         639       0     254      36288        0
        malloc-256    256      86      49       11858       0      62      34560        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-16384  16384       0       2         170       0       1      32768        0
       malloc-8192   8192       0       4          33       0       1      32768        0
       malloc-8192   8192       4       0           4       0       1      32768        0
       malloc-8192   8192       2       2         103       0       1      32768        0
           pcpu-64     64     479      33         479       0     254      32768        0
             Files     80     237     163       22416       0     126      32000        0
        malloc-256    256      22      98        6738       0      62      30720        0
              pipe    744      23      17         595       0      16      29760        0
        malloc-512    512       4      52         929       0      30      28672        0
         TURNSTILE    136     181      29         181       0      62      28560        0
             KNOTE    160      28     147      409059       0      62      28000        0
          8 Bucket     80      54     296        3080       0     126      28000        0
       malloc-8192   8192       3       0           3       0       1      24576        0
               PWD     32      21     735        5595       0     254      24192        0
            ttyinq    160     135      15         300       0      62      24000        0
           ttyoutq    256      72      18         160       0      62      23040        0
        malloc-256    256      50      40         146       0      62      23040        0
        sctp_laddr     48     197     223        2224       0     254      20160        0
         malloc-32     32      96     534        5780       0     254      20160        0
          2 Bucket     32      68     562        1739       0     254      20160        0
        SLEEPQUEUE     88     181      43         181       0     126      19712        0
     udplite_inpcb    488       0      40         235       0     254      19520        0
       Mountpoints   2752       2       5           2       0       4      19264        0
      malloc-16384  16384       1       0           1       0       1      16384        0
      malloc-16384  16384       1       0           1       0       1      16384        0
      malloc-16384  16384       1       0           1       0       1      16384        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-1024   1024      11       5          27       0      16      16384        0
sctp_stream_msg_out    112      77      67         370       0     254      16128        0
         16 Bucket    144      57      55         517       0      62      16128        0
          4 Bucket     48       6     330         235       0     254      16128        0
      vtnet_tx_hdr     24       0     668      779201       0     254      16032        0
      tcp_rack_pcb    704      10      12         111       0      16      15488        0
        malloc-384    384      26      14          34       0      30      15360        0
       tcp_bbr_pcb    832       0      18         270       0      16      14976        0
       malloc-4096   4096       0       3           6       0       2      12288        0
       malloc-4096   4096       2       1           3       0       2      12288        0
       malloc-1024   1024       2      10          42       0      16      12288        0
       malloc-1024   1024       5       7           6       0      16      12288        0
       malloc-1024   1024      10       2          10       0      16      12288        0
         malloc-64     64      40     149        1045       0     254      12096        0
         malloc-16     16     325     425        9189       0     254      12000        0
             ripcb    488       5      19          71       0     254      11712        0
         udp_inpcb    488       2      22         235       0     254      11712        0
              kenv    258      15      30        1065       0      30      11610        0
     routing nhops    256      27      18          34       0      62      11520        0
             unpcb    256      20      25        1677       0     254      11520        0
        malloc-384    384      21       9          21       0      30      11520        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-2048   2048       3       1           3       0       8       8192        0
       malloc-2048   2048       0       4          40       0       8       8192        0
       malloc-1024   1024       2       6         161       0      16       8192        0
       malloc-1024   1024       3       5           3       0      16       8192        0
        malloc-512    512       0      16         118       0      30       8192        0
        malloc-512    512      10       6          52       0      30       8192        0
        malloc-512    512      12       4          71       0      30       8192        0
           rtentry    176      30      16          34       0      62       8096        0
              PGRP     88      35      57          50       0     126       8096        0
          rl_entry     40      80     122          80       0     254       8080        0
             udpcb     32       2     250         470       0     254       8064        0
         malloc-64     64      12     114          59       0     254       8064        0
         malloc-64     64      15     111         320       0     254       8064        0
         malloc-32     32      33     219        1471       0     254       8064        0
         malloc-32     32      49     203          69       0     254       8064        0
         malloc-32     32      38     214         805       0     254       8064        0
         malloc-32     32      67     185        2862       0     254       8064        0
         malloc-32     32      55     197        1334       0     254       8064        0
         malloc-16     16     256     244         256       0     254       8000        0
         malloc-16     16      83     417         338       0     254       8000        0
         malloc-16     16     189     311        1440       0     254       8000        0
         malloc-16     16      20     480       27404       0     254       8000        0
         malloc-16     16       9     491          16       0     254       8000        0
        malloc-128    128      33      29         108       0     126       7936        0
        malloc-128    128      12      50         386       0     126       7936        0
      tcp_rack_map    120      20      46         132       0     126       7920        0
        malloc-384    384      11       9          11       0      30       7680        0
     FPU_save_area    832       1       8           1       0      16       7488        0
            cpuset    104       7      55           7       0     126       6448        0
 epoch_record pcpu    256       4      12           4       0      62       4096        0
       malloc-4096   4096       1       0           1       0       2       4096        0
       malloc-2048   2048       0       2          12       0       8       4096        0
       malloc-2048   2048       1       1           1       0       8       4096        0
        malloc-512    512       1       7           1       0      30       4096        0
        malloc-512    512       2       6           7       0      30       4096        0
        malloc-512    512       1       7           1       0      30       4096        0
        malloc-512    512       1       7           2       0      30       4096        0
           pcpu-16     16       7     249           7       0     254       4096        0
           pf tags    104       1      38           1       0     126       4056        0
    tcp_log_bucket    176       0      23           1       0      62       4048        0
          sackhole     32       0     126           2       0     254       4032        0
         hostcache     96       1      41           1       0     254       4032        0
          syncache    168       0      24           4       0     254       4032        0
         malloc-32     32       8     118         641       0     254       4032        0
         malloc-16     16       7     243           7       0     254       4000        0
      tcp_log_node    120       0      33           3       0     126       3960        0
        sctp_readq    152       0      26         418       0     254       3952        0
            itimer    352       0      11           4       0      30       3872        0
       UMA Slabs 1    176      10      12          10       0      62       3872        0
            mqnode    416       3       6           3       0      30       3744        0
        KMAP ENTRY     96      12      27          12       0       0       3744        0
              vmem   1856       1       1           1       0       8       3712        0
           SMR CPU     32       2      29           2       0     254        992        0
        SMR SHARED     24       2      29           2       0     254        744        0
       FFS1 dinode    128       0       0           0       0     126          0        0
             swblk    136       0       0           0       0      62          0        0
          swpctrie    144       0       0           0       0      62          0        0
   sctp_asconf_ack     48       0       0           0       0     254          0        0
       sctp_asconf     40       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    296       0       0           0       0     254          0        0
          pf mtags     48       0       0           0       0     254          0        0
    IPsec SA lft_c     16       0       0           0       0     254          0        0
          tcpreass     48       0       0           0       0     254          0        0
tfo_ccache_entries     80       0       0           0       0     126          0        0
               tfo      4       0       0           0       0     254          0        0
             tcptw     88       0       0           0       0     254          0        0
               ipq     56       0       0           0       0     254          0        0
            AIOLIO    272       0       0           0       0      30          0        0
             AIOCB    552       0       0           0       0      16          0        0
              AIOP     32       0       0           0       0     254          0        0
               AIO    208       0       0           0       0      62          0        0
        TMPFS node    224       0       0           0       0      62          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    592       0       0           0       0      16          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     24       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
      ktls_session    192       0       0           0       0      62          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   2632       0       0           0       0      64          0        0
            mdpbuf   2632       0       0           0       0       3          0        0
           nfspbuf   2632       0       0           0       0      16          0        0
            swwbuf   2632       0       0           0       0       8          0        0
            swrbuf   2632       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-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-4096   4096       0       0           0       0       2          0        0
        malloc-384    384       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
2021/02/09 00:42 freebsd-src 9600aa31aa63 2bd9619f console log report ci-freebsd-i386 panic: _mtx_lock_sleep: recursed on non-recursive mutex sctp-create @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_p
* Struck through repros no longer work on HEAD.