syzbot


panic: _mtx_lock_sleep: recursed on non-recursive mutex sctp-tcb @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_pcb.

Status: closed as dup on 2021/09/07 22:01
Reported-by: syzbot+ef5214a70576d3b5f7b9@syzkaller.appspotmail.com
First crash: 1491d, last: 1287d
Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
panic: mtx_lock() of spin mutex (null) @ /syzkaller/managers/main/kernel/sys/netinet/tcp_output.c:LINE syz 707 1193d 2078d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
freebsd panic: _mtx_lock_sleep: recursed on non-recursive mutex sctp-tcb @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_pcb. (3) 1 512d 512d 0/2 auto-obsoleted due to no activity on 2023/09/26 23:02
freebsd panic: _mtx_lock_sleep: recursed on non-recursive mutex sctp-tcb @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_pcb. (2) 1 880d 880d 0/2 auto-obsoleted due to no activity on 2022/09/23 23:19

Sample crash report:
panic: _mtx_lock_sleep: recursed on non-recursive mutex sctp-tcb @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_pcb.c:3361

cpuid = 1
time = 1603411787
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0003635670
vpanic() at vpanic+0x1c7/frame 0xfffffe00036356d0
panic() at panic+0x43/frame 0xfffffe0003635730
__mtx_lock_sleep() at __mtx_lock_sleep+0x6e9/frame 0xfffffe00036357c0
__mtx_lock_flags() at __mtx_lock_flags+0x150/frame 0xfffffe0003635820
sctp_inpcb_free() at sctp_inpcb_free+0x4de/frame 0xfffffe00036358a0
sctp_free_assoc() at sctp_free_assoc+0x2890/frame 0xfffffe0003635930
sctp_load_addresses_from_init() at sctp_load_addresses_from_init+0x1201/frame 0xfffffe00036362c0
sctp_process_control() at sctp_process_control+0x9318/frame 0xfffffe0003636750
sctp_common_input_processing() at sctp_common_input_processing+0x7db/frame 0xfffffe00036368e0
sctp_input_with_port() at sctp_input_with_port+0x308/frame 0xfffffe00036369d0
sctp_input() at sctp_input+0x1f/frame 0xfffffe00036369f0
ip_input() at ip_input+0x388/frame 0xfffffe0003636a90
swi_net() at swi_net+0x20d/frame 0xfffffe0003636b10
ithread_loop() at ithread_loop+0x33f/frame 0xfffffe0003636bb0
fork_exit() at fork_exit+0xb3/frame 0xfffffe0003636bf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0003636bf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 12 tid 100020 ]
Stopped at      kdb_enter+0x67: movq    $0,0x1476e66(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b  ll+0x1a
es                        0x3b  ll+0x1a
fs                        0x13
gs                        0x1b
ss                           0
rax                       0x12
rcx                       0x80  ll+0x5f
rdx         0xffffffff8191e998
rbx                          0
rsp         0xfffffe0003635650
rbp         0xfffffe0003635670
rsi                        0x1
rdi                          0
r8                           0
r9                  0xffffffff
r10                          0
r11                     0x3de0  ll+0x3dbf
r12         0xffffffff82066b10  ddb_dbbe
r13                          0
r14         0xffffffff8196aa67
r15         0xffffffff8196aa67
rip         0xffffffff810dd017  kdb_enter+0x67
rflags                    0x82  ll+0x61
kdb_enter+0x67: movq    $0,0x1476e66(%rip)
db> show proc
Process 12 (intr) at 0xfffff800042a1a40:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff82506ad0
 ABI: null
 reaper: 0xffffffff82506ad0 reapsubtree: 12
 sigparent: 20
 vmspace: 0xffffffff82507720
   (map 0xffffffff82507720)
   (map.pmap 0xffffffff825077e0)
   (pmap 0xffffffff82507840)
 threads: 23
100011                   I                                   [swi6: Giant taskq]
100013                   I                                   [swi5: fast taskq]
100017                   I                                   [swi6: task queue]
100020                   Run     CPU 1                       [swi1: netisr 0]
100021                   RunQ                                [swi4: clock (0)]
100022                   I                                   [swi4: clock (1)]
100023                   I                                   [swi3: vm]
100035                   I                                   [irq24: virtio_pci0]
100036                   I                                   [irq25: virtio_pci0]
100037                   I                                   [irq26: virtio_pci0]
100038                   I                                   [irq27: virtio_pci0]
100039                   I                                   [irq28: virtio_pci1]
100040                   I                                   [irq29: virtio_pci1]
100041                   I                                   [irq30: virtio_pci1]
100042                   I                                   [irq31: virtio_pci1]
100043                   I                                   [irq32: virtio_pci1]
100048                   I                                   [irq10: virtio_pci2]
100050                   I                                   [irq1: atkbd0]
100051                   I                                   [irq12: psm0]
100052                   I                                   [swi0: uart uart++]
100060                   I                                   [swi1: pf send]
100073                   I                                   [swi1: hpts]
100074                   I                                   [swi1: hpts]
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 8029   770   770     0  R       CPU 0                       syz-executor.0
  805   794   805     0  Ss      select  0xfffff800422fc840  dhclient
  799     1   799     0  Ss      select  0xfffff800422fc7c0  dhclient
  794   785   424    65  S       select  0xfffff800422fc8c0  dhclient
  785   424   424     0  S       wait    0xfffff80004b84000  sh
  770   768   770     0  Ss      nanslp  0xffffffff825275c0  syz-executor.0
  768   766   766     0  R       (threaded)                  syz-execprog
100078                   S       uwait   0xfffff800046e5100  syz-execprog
100103                   S       nanslp  0xffffffff825275c0  syz-execprog
100104                   S       uwait   0xfffff80042082e80  syz-execprog
100105                   RunQ                                syz-execprog
100106                   S       kqread  0xfffff80004bd0000  syz-execprog
100107                   S       uwait   0xfffff80004bef200  syz-execprog
100108                   S       uwait   0xfffff80004bef300  syz-execprog
100781                   S       uwait   0xfffff80042412c80  syz-execprog
  766   764   766     0  Ss      pause   0xfffff800420075c8  csh
  764   682   764     0  Ss      select  0xfffff800046f92c0  sshd
  743     1   743     0  Ss+     ttyin   0xfffff8000470a4b0  getty
  742     1   742     0  Ss+     ttyin   0xfffff80004a128b0  getty
  741     1   741     0  Ss+     ttyin   0xfffff80004a12cb0  getty
  740     1   740     0  Ss+     ttyin   0xfffff80004a0a0b0  getty
  739     1   739     0  Ss+     ttyin   0xfffff80004a0a4b0  getty
  738     1   738     0  Ss+     ttyin   0xfffff80004a0a8b0  getty
  737     1   737     0  Ss+     ttyin   0xfffff80004a0acb0  getty
  736     1   736     0  Ss+     ttyin   0xfffff800049ad0b0  getty
  735     1   735     0  Ss+     ttyin   0xfffff800049ad4b0  getty
  686     1   686     0  Ss      nanslp  0xffffffff825275c0  cron
  682     1   682     0  Ss      select  0xfffff800046f96c0  sshd
  495     1   495     0  Ss      select  0xfffff80004aad5c0  syslogd
  424     1   424     0  Ss      wait    0xfffff8001ef15000  devd
  423     1   423    65  Ss      select  0xfffff80004aad1c0  dhclient
  338     1   338     0  Ss      select  0xfffff80004aad4c0  dhclient
  335     1   335     0  Ss      select  0xfffff80004aad640  dhclient
   23     0     0     0  DL      syncer  0xffffffff82614978  [syncer]
   22     0     0     0  DL      vlruwt  0xfffff80004a68a40  [vnlru]
   21     0     0     0  DL      (threaded)                  [bufdaemon]
100070                   D       qsleep  0xffffffff82613a50  [bufdaemon]
100077                   D       -       0xffffffff8200ae00  [bufspacedaemon-0]
100088                   D       sdflush 0xfffff800049834e8  [/ worker]
   20     0     0     0  DL      psleep  0xffffffff8263af48  [vmdaemon]
   19     0     0     0  DL      (threaded)                  [pagedaemon]
100068                   D       psleep  0xffffffff8262f378  [dom0]
100075                   D       launds  0xffffffff8262f384  [laundry: dom0]
100076                   D       umarcl  0xffffffff814e3fe0  [uma]
   18     0     0     0  DL      -       0xffffffff8235b108  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff82d931d8  [sctp_iterator]
   16     0     0     0  DL      pftm    0xffffffff82b9c390  [pf purge]
   15     0     0     0  DL      -       0xffffffff8261302c  [soaiod4]
    9     0     0     0  DL      -       0xffffffff8261302c  [soaiod3]
    8     0     0     0  DL      -       0xffffffff8261302c  [soaiod2]
    7     0     0     0  DL      -       0xffffffff8261302c  [soaiod1]
    6     0     0     0  DL      (threaded)                  [cam]
100034                   D       -       0xffffffff82232e40  [doneq0]
100067                   D       -       0xffffffff82232d10  [scanner]
    5     0     0     0  DL      crypto_ 0xfffff80004326d90  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffff80004326d30  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff8262c870  [crypto]
   14     0     0     0  DL      seqstat 0xfffff800042ff888  [sequencer 00]
   13     0     0     0  DL      (threaded)                  [geom]
100025                   D       -       0xffffffff82506530  [g_event]
100026                   D       -       0xffffffff82506538  [g_up]
100027                   D       -       0xffffffff82506540  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100018                   D       -       0xfffff8000429a800  [thr_0]
100019                   D       -       0xfffff8000429a880  [thr_1]
   12     0     0     0  RL      (threaded)                  [intr]
100011                   I                                   [swi6: Giant taskq]
100013                   I                                   [swi5: fast taskq]
100017                   I                                   [swi6: task queue]
100020                   Run     CPU 1                       [swi1: netisr 0]
100021                   RunQ                                [swi4: clock (0)]
100022                   I                                   [swi4: clock (1)]
100023                   I                                   [swi3: vm]
100035                   I                                   [irq24: virtio_pci0]
100036                   I                                   [irq25: virtio_pci0]
100037                   I                                   [irq26: virtio_pci0]
100038                   I                                   [irq27: virtio_pci0]
100039                   I                                   [irq28: virtio_pci1]
100040                   I                                   [irq29: virtio_pci1]
100041                   I                                   [irq30: virtio_pci1]
100042                   I                                   [irq31: virtio_pci1]
100043                   I                                   [irq32: virtio_pci1]
100048                   I                                   [irq10: virtio_pci2]
100050                   I                                   [irq1: atkbd0]
100051                   I                                   [irq12: psm0]
100052                   I                                   [swi0: uart uart++]
100060                   I                                   [swi1: pf send]
100073                   I                                   [swi1: hpts]
100074                   I                                   [swi1: hpts]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffff80004284520  [init]
   10     0     0     0  DL      audit_w 0xffffffff8262cd90  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff82506ad0  [swapper]
100005                   D       -       0xfffff8000429ad00  [if_io_tqg_0]
100006                   D       -       0xfffff8000429ac00  [if_io_tqg_1]
100007                   D       -       0xfffff8000429ab00  [if_config_tqg_0]
100008                   D       -       0xfffff8000429aa00  [softirq_0]
100009                   D       -       0xfffff8000429a900  [softirq_1]
100010                   D       -       0xfffff80004087e00  [inm_free taskq]
100012                   D       -       0xfffff80004087a00  [thread taskq]
100014                   D       -       0xfffff80004087800  [kqueue_ctx taskq]
100015                   D       -       0xfffff80004087700  [in6m_free taskq]
100016                   D       -       0xfffff80004087600  [aiod_kick taskq]
100024                   D       -       0xfffff80004087400  [firmware taskq]
100029                   D       -       0xfffff80004087300  [crypto_0]
100030                   D       -       0xfffff80004087300  [crypto_1]
100044                   D       -       0xfffff80004087100  [vtnet0 rxq 0]
100045                   D       -       0xfffff80004087000  [vtnet0 txq 0]
100046                   D       -       0xfffff800046f2e00  [vtnet0 rxq 1]
100047                   D       -       0xfffff800046f2d00  [vtnet0 txq 1]
100049                   D       vtbslp  0xfffff800046f9e80  [virtio_balloon]
100053                   D       -       0xfffff800046f2c00  [mca taskq]
100056                   D       -       0xffffffff81d127e0  [deadlkres]
100062                   D       -       0xfffff8000497aa00  [acpi_task_0]
100063                   D       -       0xfffff8000497aa00  [acpi_task_1]
100064                   D       -       0xfffff8000497aa00  [acpi_task_2]
100066                   D       -       0xfffff80004087200  [CAM taskq]
db> show all locks
Process 12 (intr) thread 0xfffffe00048b2a00 (100020)
exclusive sleep mutex sctp-inp (inp) r = 0 (0xfffff80042608e68) locked @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_pcb.c:3333
exclusive rw sctp-info (sctp-info) r = 0 (0xfffffe0004941208) locked @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_pcb.c:3331
exclusive sleep mutex sctp-create (inp_create) r = 0 (0xfffff80042608e88) locked @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_pcb.c:3330
exclusive sleep mutex sctp-tcb (tcb) r = 0 (0xfffffe00258408b0) locked @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_pcb.c:1473
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
            devbuf         4214         4854K         4242
          tcp_hpts            5         3201K            5
             vtbuf           24         1968K           46
          inodedep         2724         1874K         7311
         sysctloid        28902         1686K        28966
              kobj          336         1344K          496
            newblk            6         1026K         7625
          vfscache            3         1025K            3
               pcb          249          781K        86640
            dirrem         2715          679K         7258
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
         sctp_timw         1936          484K         1936
              intr            4          472K            4
          freefile         2715          340K         7256
           subproc          116          230K         8097
            acpica         1674          185K        52444
         vnet_data            1          168K            1
           pagedep            6          130K         7254
        tfo_ccache            1          128K            1
         sctp_atcl          223          112K       115288
               sem            4          106K            4
            DEVFS1          102          102K          113
         sctp_stro          100          100K        28922
            linker          254           99K          285
               bus          979           79K         3032
          mtx_pool            2           72K            2
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          507           64K          507
              umtx          306           39K          306
          filedesc            5           37K        14477
               BPF           19           36K           19
              temp           23           33K         1638
         hostcache            1           32K            1
               shm            1           32K            1
           kdtrace          160           31K        30459
            DEVFS3          121           31K          131
               msg            4           30K            4
        DEVFS_RULE           56           27K           56
        gtaskqueue           18           26K           18
              vmem            3           22K            5
            kbdmux            6           22K            6
         ufs_mount            5           17K            6
              proc            3           17K            3
            ifaddr           43           17K           43
               tty           16           16K           16
           tidhash            1           16K            1
           ithread           99           16K           99
         sctp_atky          322           14K       129847
            bus-sc           30           14K         1413
            KTRACE          100           13K          100
              kenv           92           12K           92
      eventhandler          132           12K          132
         pfs_nodes           20           10K           20
              GEOM           60           10K          489
              rman           82           10K          423
         bmsafemap            2            9K         7276
              UART           12            9K           12
           devstat            4            9K            4
               rpc            2            8K            2
             shmfd            1            8K            1
       pfs_vncache            1            8K            1
     audit_evclass          233            8K          291
           lltable           20            7K           20
             ifnet            4            7K            4
           CAM DEV            3            6K          510
       ether_multi           73            6K           83
                vt           11            6K           11
            kqueue           51            6K         8034
              cred           21            6K          239
            sglist            5            6K            5
         CAM queue            5            6K         1528
         taskqueue           48            6K           48
         in6_multi           41            5K           41
       ufs_dirhash           24            5K           24
            plimit           18            5K          345
               UMA          251            5K          251
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
          routetbl           18            4K           18
          pf_ifnet            7            4K           10
         sctp_athm          223            4K       115288
             hhook           13            4K           13
          sctp_map          200            4K        57844
          terminal           11            3K           11
           acpisem           22            3K           22
           session           22            3K           34
              pgrp           22            3K           34
            select           19            3K           19
           uidinfo            3            3K            8
         proc-args           41            3K          508
        local_apic            1            2K            1
           io_apic            1            2K            1
         ipsec-saq            2            2K            2
             lockf           19            2K           29
            Unitno           28            2K        26668
           CAM XPT           22            2K          543
         sctp_stri            3            2K        28724
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
               msi            9            2K            9
             clone            9            2K            9
          sctp_ifa            8            1K           10
           softdep            1            1K            1
            diradd            8            1K         7274
            sahead            1            1K            1
          secasvar            1            1K            1
       vnodemarker            2            1K           24
      NFSD session            1            1K            1
            ip6ndp            6            1K            9
        CAM periph            4            1K          271
             ipsec            3            1K            3
          in_multi            3            1K            5
             nhops            6            1K            6
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           89
          pci_link           10            1K           10
 encap_export_host           12            1K           12
            crypto            3            1K            3
             mkdir            4            1K        14482
              pfil            4            1K            4
    chacha20random            1            1K            1
           CAM SIM            2            1K            2
              cdev            2            1K            2
          sctp_ifn            3            1K           10
         newdirblk            3            1K         7241
               mld            3            1K            3
              igmp            3            1K            3
               tun            4            1K            4
               osd            3            1K            9
            DEVFSP            5            1K            5
            vnodes            1            1K            1
              ktls            1            1K            1
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
            feeder            7            1K            7
       inpcbpolicy            7            1K          147
        loginclass            3            1K            7
            prison            6            1K            6
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
            apmdev            1            1K            1
          atkbddev            2            1K            2
          CAM path            4            1K         1034
          freework            1            1K         7256
           tcpfunc            2            1K            2
          pmchooks            1            1K            1
            soname            4            1K        40428
          nexusdev            5            1K            5
          sctp_vrf            1            1K            1
           entropy            2            1K           39
              vnet            1            1K            1
               pmc            1            1K            1
          acpiintr            1            1K            1
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          filecaps            2            1K           69
          p1003.1b            1            1K            1
        sctp_mcore            0            0K            0
        sctp_socko            0            0K            0
         sctp_iter            0            0K            5
         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            5
         sctp_aadr            0            0K            0
          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
            nvlist            0            0K            0
          SCSI ENC            0            0K            0
           SCSI sa            0            0K            0
        madt_table            0            0K            2
         scsi_pass            0            0K            0
         ciss_data            0            0K            0
          smartpqi            0            0K            0
            pvscsi            0            0K            0
           ath_hal            0            0K            0
            athdev            0            0K            0
           ata_pci            0            0K            0
           ata_dma            0            0K            0
       ata_generic            0            0K            0
               amr            0            0K            0
           scsi_da            0            0K           69
              iavf            0            0K            0
               ixl            0            0K            0
            ata_da            0            0K            0
           scsi_ch            0            0K            0
           scsi_cd            0            0K            0
            USBdev            0            0K            0
               USB            0            0K            0
       AHCI driver            0            0K            0
        ice-resmgr            0            0K            0
         ice-osdep            0            0K            0
               ice            0            0K            0
             axgbe            0            0K            0
       fpukern_ctx            0            0K            0
               agp            0            0K            0
          xen_intr            0            0K            0
           xen_hvm            0            0K            0
         legacydrv            0            0K            0
            qpidrv            0            0K            0
           nvme_da            0            0K            0
      dmar_idpgtbl            0            0K            0
          dmar_dom            0            0K            0
          dmar_ctx            0            0K            0
           acpipwr            0            0K            0
            twsbuf            0            0K            0
      twe_commands            0            0K            0
              isci            0            0K            0
      iommu_dmamap            0            0K            0
      twa_commands            0            0K            0
     hyperv_socket            0            0K            0
           bxe_ilt            0            0K            0
            xenbus            0            0K            0
       tcp_log_dev            0            0K            0
      midi buffers            0            0K            0
             mixer            0            0K            0
     vm_fictitious            0            0K            0
              ac97            0            0K            0
             hdacc            0            0K            0
              hdac            0            0K            0
              hdaa            0            0K            0
         acpi_perf            0            0K            0
         acpicmbat            0            0K            0
       SIIS driver            0            0K            0
           CAM CCB            0            0K         2012
           UMAHash            0            0K            0
         vm_pgdata            0            0K            0
           jblocks            0            0K            0
          savedino            0            0K         2912
          sentinel            0            0K            0
            jfsync            0            0K            0
            jtrunc            0            0K            0
             sbdep            0            0K            6
           jsegdep            0            0K            0
              jseg            0            0K            0
         jfreefrag            0            0K            0
          jfreeblk            0            0K            0
           jnewblk            0            0K            0
            jmvref            0            0K            0
           jremref            0            0K            0
           jaddref            0            0K            0
           freedep            0            0K            0
          freeblks            0            0K         7255
          freefrag            0            0K            6
        allocindir            0            0K            0
          indirdep            0            0K            4
       allocdirect            0            0K            0
          ufs_trim            0            0K            0
           mactemp            0            0K            0
     audit_trigger            0            0K            0
 audit_pipe_presel            0            0K            0
     audit_pipeent            0            0K            0
        audit_pipe            0            0K            0
      audit_evname            0            0K            0
         audit_bsm            0            0K            0
      audit_gidset            0            0K            0
        audit_text            0            0K            0
        audit_path            0            0K            0
        audit_data            0            0K            0
        audit_cred            0            0K            0
             xform            0            0K            0
               NLM            0            0K            0
    ipsec-spdcache            0            0K            0
         ipsec-reg            0            0K            0
        ipsec-misc            0            0K            0
      ipsecrequest            0            0K            0
            ip6opt            0            0K            3
       ip6_msource            0            0K            0
      ip6_moptions            0            0K            0
       in6_mfilter            0            0K            0
             frag6            0            0K            0
            tcplog            0            0K            0
               PUC            0            0K            0
               LRO            0            0K            0
      newreno data            0            0K            0
        ip_msource            0            0K            0
       ip_moptions            0            0K            0
        in_mfilter            0            0K            0
              ipid            0            0K            0
         80211scan            0            0K            0
      80211ratectl            0            0K            0
        80211power            0            0K            0
       80211nodeie            0            0K            0
         80211node            0            0K            0
      80211mesh_gt            0            0K            0
      80211mesh_rt            0            0K            0
         80211perr            0            0K            0
         80211prep            0            0K            0
         80211preq            0            0K            0
          80211dfs            0            0K            0
       80211crypto            0            0K            0
          80211vap            0            0K            0
             iflib            0            0K            0
              vlan            0            0K            0
               gif            0            0K            0
           ifdescr            0            0K            0
              zlib            0            0K            0
           fadvise            0            0K            0
          ppbusdev            0            0K            0
            statfs            0            0K         7430
       export_host            0            0K            0
        cl_savebuf            0            0K            2
agtiapi_MemAlloc malloc            0            0K            0
    osti_cacheable            0            0K            0
          tempbuff            0            0K            0
          tempbuff            0            0K            0
ag_tgt_map_t malloc            0            0K            0
ag_slr_map_t malloc            0            0K            0
lDevFlags * malloc            0            0K            0
tiDeviceHandle_t * malloc            0            0K            0
ag_portal_data_t malloc            0            0K            0
ag_device_t malloc            0            0K            0
     STLock malloc            0            0K            0
          CCB List            0            0K            0
            sr_iov            0            0K            0
               OCS            0            0K            0
               OCS            0            0K            0
              nvme            0            0K            0
               nvd            0            0K            0
            netmap            0            0K            0
            mwldev            0            0K            0
        MVS driver            0            0K            0
            biobuf            0            0K            0
              aios            0            0K            0
               lio            0            0K            0
               acl            0            0K            0
          mbuf_tag            0            0K           50
              accf            0            0K            0
               pts            0            0K            0
               iov            0            0K        21857
          ioctlops            0            0K           90
           Witness            0            0K            0
             stack            0            0K            0
     CAM ccb queue            0            0K            0
          mrsasbuf            0            0K            0
          mpt_user            0            0K            0
          mps_user            0            0K            0
            MPSSAS            0            0K            0
              sbuf            0            0K          288
               mps            0            0K            0
          firmware            0            0K            0
        compressor            0            0K            0
          mpr_user            0            0K            0
              SWAP            0            0K            0
            MPRSAS            0            0K            0
               mpr            0            0K            0
         sysctltmp            0            0K          611
            sysctl            0            0K            1
            mfibuf            0            0K            0
              ekcd            0            0K            0
            dumper            0            0K            0
          sendfile            0            0K            0
              rctl            0            0K            0
        md_sectors            0            0K            0
           md_disk            0            0K            0
           malodev            0            0K            0
               LED            0            0K            0
             cache            0            0K            0
          ix_sriov            0            0K            0
          kcovinfo            0            0K            0
      prison_racct            0            0K            0
       Fail Points            0            0K            0
             sigio            0            0K            1
filedesc_to_leader            0            0K            0
               pwd            0            0K            0
       tty console            0            0K            0
        aacraidcam            0            0K            0
                ix            0            0K            0
            ipsbuf            0            0K            0
            iirbuf            0            0K            0
       aacraid_buf            0            0K            0
            aaccam            0            0K            0
        isofs_node            0            0K            0
       isofs_mount            0            0K            0
     tr_raid5_data            0            0K            0
    tr_raid1e_data            0            0K            0
     tr_raid1_data            0            0K            0
     tr_raid0_data            0            0K            0
    tr_concat_data            0            0K            0
       md_sii_data            0            0K            0
   md_promise_data            0            0K            0
    md_nvidia_data            0            0K            0
   md_jmicron_data            0            0K            0
     md_intel_data            0            0K            0
       md_ddf_data            0            0K            0
         raid_data            0            0K           72
     geom_flashmap            0            0K            0
        tmpfs name            0            0K            0
       tmpfs mount            0            0K            0
           NFS FHA            0            0K            0
         newnfsmnt            0            0K            0
  newnfsclient_req            0            0K            0
   NFSCL layrecall            0            0K            0
     NFSCL session            0            0K            0
     NFSCL sockreq            0            0K            0
     NFSCL devinfo            0            0K            0
     NFSCL flayout            0            0K            0
      NFSCL layout            0            0K            0
     NFSD rollback            0            0K            0
NFSCL diroffdiroff            0            0K            0
       NEWdirectio            0            0K            0
        NEWNFSnode            0            0K            0
         NFSCL lck            0            0K            0
      NFSCL lckown            0            0K            0
      NFSCL client            0            0K            0
       NFSCL deleg            0            0K            0
        NFSCL open            0            0K            0
       NFSCL owner            0            0K            0
            NFS fh            0            0K            0
           NFS req            0            0K            0
     NFSD usrgroup            0            0K            0
       NFSD string            0            0K            0
       NFSD V4lock            0            0K            0
      NFSD V4state            0            0K            0
     NFSD srvcache            0            0K            0
       msdosfs_fat            0            0K            0
     msdosfs_mount            0            0K            0
      msdosfs_node            0            0K            0
            DEVFS4            0            0K            0
            DEVFS2            0            0K            0
            gntdev            0            0K            0
       privcmd_dev            0            0K            0
        evtchn_dev            0            0K            0
          xenstore            0            0K            0
            aacbuf            0            0K            0
               xnb            0            0K            0
              xbbd            0            0K            0
               xbd            0            0K            0
           Balloon            0            0K            0
          sysmouse            0            0K            0
            vtfont            0            0K            0
              zstd            0            0K            0
db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
      mbuf_cluster   2048    8963       1        8963       0     254   18358272        0
       mbuf_packet    256    8395     440       74034       0     254    2261760        0
               512    512    2735    1625        7346       0      30    2232320        0
               512    512    4136       8        4565       0      30    2121728        0
          BUF TRIE    144     165   13303         540       0      62    1939392        0
              4096   4096     336       1         496       0       2    1380352        0
               128    128    9467     174       31231       0     126    1234048        0
         sctp_asoc   2288     101     419       28922       0     254    1189760        0
               256    256    2750    1645        7969       0      62    1125120        0
               256    256     345    2820       55194       0      62     810240        0
              pbuf    832       0     969           0       0       2     806208        0
       UMA Slabs 0    112    6550      35        6550       0     126     737520        0
           sctp_ep   1280     120     408       43281       0     254     675840        0
               128    128    3098    1645       14996       0     126     607104        0
               256    256    2066      34       45234       0      62     537600        0
        sctp_raddr    736     113     426       86366       0     254     396704        0
        RADIX NODE    144    2212     389      208490       0      63     374544        0
        256 Bucket   2048     146      20        7093       0       8     339968        0
            socket    960      20     328       44502       0     254     334080        0
             65536  65536       4       1         114       0       1     327680        0
             VNODE    496     522      78        7781       0      30     297600        0
            THREAD   1792     128      25       14465       0       8     274176        0
         VM OBJECT    264     960      75      121343       0      30     273240        0
              2048   2048     111       9       43476       0       8     245760        0
              mbuf    256     725     220      822493       0     254     241920        0
              4096   4096      51       4        8032       0       2     225280        0
            DEVCTL   1024       0     208         113       0       0     212992        0
                64     64    2946     267       10967       0     254     205632        0
             65536  65536       1       2           9       0       1     196608        0
                16     16   12098     152       12419       0     254     196000        0
               512    512     296      64      144082       0      30     184320        0
         UMA Zones    768     226       1         226       0      16     174336        0
             16384  16384       6       4        7378       0       1     163840        0
               128    128    1185      55       24426       0     126     158720        0
                32     32    4713     201        5691       0     254     157248        0
              2048   2048       2      70        2014       0       8     147456        0
              1024   1024     107      29       28929       0      16     139264        0
              1024   1024     117      15         303       0      16     135168        0
       S VFS Cache    104     975     312        8274       0     126     133848        0
             65536  65536       2       0           2       0       1     131072        0
             65536  65536       0       2          55       0       1     131072        0
       FFS2 dinode    256     491      19        7747       0      62     130560        0
          ksiginfo    112      51     993          83       0     126     116928        0
         MAP ENTRY     96     957     261      190665       0     126     116928        0
             g_bio    408       0     280        5702       0      30     114240        0
         vmem btag     56    1817     115        1817       0     254     108192        0
         FFS inode    160     491     134        7748       0      62     100000        0
           VMSPACE   2536      26      10        8010       0       4      91296        0
         64 Bucket    512     123      53        1437       0      30      90112        0
              PROC   1312      48      18        8029       0       8      86592        0
        128 Bucket   1024      62      21        2958       0      16      84992        0
        sctp_chunk    152     103     443       86266       0     254      82992        0
          UMA Kegs    384     212       4         212       0      30      82944        0
        sctp_readq    152       9     511        8330       0     254      79040        0
         filedesc0   1080      49      21        8030       0       8      75600        0
              8192   8192       9       0           9       0       1      73728        0
              4096   4096      17       1         479       0       2      73728        0
               128    128     520      38        3422       0     126      71424        0
                64     64     624     447       59283       0     254      68544        0
             65536  65536       1       0           1       0       1      65536        0
             65536  65536       1       0           1       0       1      65536        0
         32 Bucket    256      95     160        3134       0      62      65280        0
              8192   8192       2       5         119       0       1      57344        0
                64     64     572     310        8781       0     254      56448        0
               128    128     357      46         900       0     126      51584        0
              2048   2048       4      20         511       0       8      49152        0
               512    512      89       7         111       0      30      49152        0
   mbuf_jumbo_page   4096       0      10          10       0     254      40960        0
              8192   8192       4       1           6       0       1      40960        0
              4096   4096      10       0          10       0       2      40960        0
            clpbuf    832       0      48          89       0      16      39936        0
           DIRHASH   1024      34       2          34       0      16      36864        0
             NAMEI   1024       0      36       41000       0      16      36864        0
             32768  32768       1       0           1       0       1      32768        0
             32768  32768       0       1         112       0       1      32768        0
             32768  32768       1       0           1       0       1      32768        0
             32768  32768       1       0           1       0       1      32768        0
             16384  16384       2       0           5       0       1      32768        0
              1024   1024      26       6          31       0      16      32768        0
           64 pcpu      8    3930     166        3934       0     254      32768        0
              4096   4096       2       5        7433       0       2      28672        0
              4096   4096       7       0          10       0       2      28672        0
     mt_stats_zone     64     446       2         446       0     254      28672        0
          4 Bucket     48      11     577       27782       0     254      28224        0
             Files     80      94     256       42791       0     126      28000        0
          8 Bucket     80      52     298       35245       0     126      28000        0
               128    128     165      52         658       0     126      27776        0
               256    256      86      19         694       0      62      26880        0
              8192   8192       3       0           3       0       1      24576        0
               PWD     32      13     743        7332       0     254      24192        0
         16 Bucket    144      36     132         407       0      62      24192        0
            ttyinq    160     135      15         300       0      62      24000        0
               128    128     152      34         406       0     126      23808        0
           ttyoutq    256      72      18         160       0      62      23040        0
             tcpcb   1040       3      19           7       0     254      22880        0
         TURNSTILE    136     154      14         154       0      62      22848        0
       Mountpoints   2816       2       6           2       0       4      22528        0
              2048   2048       7       3          52       0       8      20480        0
                32     32     111     519       26816       0     254      20160        0
                32     32     323     307        8309       0     254      20160        0
                32     32     250     380       74862       0     254      20160        0
          2 Bucket     32      53     577       14757       0     254      20160        0
        SLEEPQUEUE     88     154      38         154       0     126      16896        0
             16384  16384       1       0           1       0       1      16384        0
             16384  16384       1       0           1       0       1      16384        0
              2048   2048       7       1           8       0       8      16384        0
              pipe    760      11       9         293       0      16      15200        0
              1024   1024       8       4          22       0      16      12288        0
              1024   1024       3       9         918       0      16      12288        0
               512    512      14      10         523       0      30      12288        0
                64     64     156      33         197       0     254      12096        0
           mt_zone     24     446      55         446       0     254      12024        0
                16     16     460     290        1554       0     254      12000        0
                16     16     247     503      138981       0     254      12000        0
                16     16     215     535       57906       0     254      12000        0
         udp_inpcb    488       2      22         135       0     254      11712        0
               256    256      15      30         374       0      62      11520        0
               256    256      14      31        7564       0      62      11520        0
              8192   8192       1       0           1       0       1       8192        0
              8192   8192       1       0           1       0       1       8192        0
              4096   4096       1       1           4       0       2       8192        0
              2048   2048       3       1           3       0       8       8192        0
              2048   2048       0       4         256       0       8       8192        0
              2048   2048       2       2           3       0       8       8192        0
               512    512       4      12           7       0      30       8192        0
           rtentry    176      20      26          24       0      62       8096        0
          rl_entry     40      29     173          29       0     254       8080        0
             selfd     64      40      86        4300       0     254       8064        0
sctp_stream_msg_out    112       0      72        8431       0     254       8064        0
        sctp_laddr     48       0     168           7       0     254       8064        0
          syncache    168       0      48           5       0     254       8064        0
             udpcb     32       2     250         135       0     254       8064        0
                64     64       8     118       13027       0     254       8064        0
                64     64       2     124           2       0     254       8064        0
                64     64      19     107         265       0     254       8064        0
                64     64       7     119          27       0     254       8064        0
                32     32       9     243          17       0     254       8064        0
                32     32      46     206          47       0     254       8064        0
                32     32      29     223         167       0     254       8064        0
                32     32       5     247        1054       0     254       8064        0
      vtnet_tx_hdr     24       0     334         664       0     254       8016        0
             KNOTE    160       8      42       38943       0      62       8000        0
                16     16       7     493       46004       0     254       8000        0
                16     16      30     470         182       0     254       8000        0
                16     16       5     495           6       0     254       8000        0
                16     16       1     499           6       0     254       8000        0
               128    128       0      62          64       0     126       7936        0
          procdesc    136       2      56           8       0      62       7888        0
         tcp_inpcb    488       3      13           7       0     254       7808        0
        KMAP ENTRY     96      12      69          12       0     126       7776        0
              kenv    258       3      27         999       0      30       7740        0
     routing nhops    256      16      14          24       0      62       7680        0
             unpcb    256      11      19        1054       0     254       7680        0
               256    256      26       4          33       0      62       7680        0
               256    256       4      26          18       0      62       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
              1024   1024       1       3           1       0      16       4096        0
              1024   1024       0       4           3       0      16       4096        0
              1024   1024       1       3           1       0      16       4096        0
               512    512       0       8           1       0      30       4096        0
               512    512       1       7           1       0      30       4096        0
         hostcache     96       1      41           1       0     254       4032        0
             ripcb    488       2       6           5       0     254       3904        0
       UMA Slabs 1    176       8      14           8       0      62       3872        0
              vmem   1856       1       1           1       0       8       3712        0
          int pcpu      4      34     478          34       0     254       2048        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 tags    104       0       0           0       0     126          0        0
          pf mtags     48       0       0           0       0     254          0        0
       tcp_bbr_pcb    832       0       0           0       0      16          0        0
       tcp_bbr_map    128       0       0           0       0     126          0        0
     udplite_inpcb    488       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
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     88       0       0           0       0     254          0        0
               ipq     56       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
            AIOLIO    280       0       0           0       0      30          0        0
             AIOCB    752       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    232       0       0           0       0      62          0        0
      TMPFS dirent     64       0       0           0       0     254          0        0
           NCLNODE    592       0       0           0       0      16          0        0
             rentr     24       0       0           0       0     254          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
         VNODEPOLL    120       0       0           0       0     126          0        0
    crypto_session     72       0       0           0       0     126          0        0
           cryptop    280       0       0           0       0      30          0        0
      nvme_request    128       0       0           0       0     126          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    832       0       0           0       0      62          0        0
            mdpbuf    832       0       0           0       0       4          0        0
           nfspbuf    832       0       0           0       0      16          0        0
            swwbuf    832       0       0           0       0       8          0        0
            swrbuf    832       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
             65536  65536       0       0           0       0       1          0        0
             65536  65536       0       0           0       0       1          0        0
             32768  32768       0       0           0       0       1          0        0
             32768  32768       0       0           0       0       1          0        0
             32768  32768       0       0           0       0       1          0        0
             32768  32768       0       0           0       0       1          0        0
             16384  16384       0       0           0       0       1          0        0
             16384  16384       0       0           0       0       1          0        0
             16384  16384       0       0           0       0       1          0        0
             16384  16384       0       0           0       0       1          0        0
              8192   8192       0       0           0       0       1          0        0
              8192   8192       0       0           0       0       1          0        0
              4096   4096       0       0           0       0       2          0        0
            fakepg    104       0       0           0       0     126          0        0
          UMA Hash    256       0       0           0       0      62          0        0

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/10/23 00:13 freebsd 193170539e0a 4e740c00 console log report syz ci-freebsd-i386
2021/05/14 16:40 freebsd-src ca1ce50b2b5e 8bdd5343 console log report ci-freebsd-i386 panic: _mtx_lock_sleep: recursed on non-recursive mutex sctp-tcb @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_pcb.
2021/04/28 08:35 freebsd-src f33f2365eeef 77e2b668 console log report ci-freebsd-i386 panic: _mtx_lock_sleep: recursed on non-recursive mutex sctp-tcb @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_pcb.
* Struck through repros no longer work on HEAD.