syzbot


panic: sleeping thread holds tun_mtx

Status: upstream: reported on 2025/06/06 11:36
Reported-by: syzbot+5486c9a44f5c16ee0a4a@syzkaller.appspotmail.com
First crash: 59d, last: 3h08m

Sample crash report:
panic: sleeping thread holds tun_mtx
cpuid = 1
time = 1754352247
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056db64f0
kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056db6650
vpanic() at vpanic+0x257/frame 0xfffffe0056db6810
panic() at panic+0xb5/frame 0xfffffe0056db68d0
propagate_priority() at propagate_priority+0x521/frame 0xfffffe0056db6920
turnstile_wait() at turnstile_wait+0x663/frame 0xfffffe0056db6990
__mtx_lock_sleep() at __mtx_lock_sleep+0x452/frame 0xfffffe0056db6ad0
__mtx_lock_flags() at __mtx_lock_flags+0x1fe/frame 0xfffffe0056db6bc0
tunstart_l2() at tunstart_l2+0x74/frame 0xfffffe0056db6c20
tap_transmit() at tap_transmit+0x1d0/frame 0xfffffe0056db6c70
ether_output_frame() at ether_output_frame+0x30c/frame 0xfffffe0056db6d30
ether_output() at ether_output+0x114b/frame 0xfffffe0056db6ea0
ip6_output_send() at ip6_output_send+0x2f9/frame 0xfffffe0056db6f20
ip6_output() at ip6_output+0x4eb1/frame 0xfffffe0056db7470
rip6_send() at rip6_send+0xe3d/frame 0xfffffe0056db7770
sosend_generic_locked() at sosend_generic_locked+0xc62/frame 0xfffffe0056db7940
sosend_generic() at sosend_generic+0x87/frame 0xfffffe0056db79a0
sousrsend() at sousrsend+0x112/frame 0xfffffe0056db7a30
kern_sendit() at kern_sendit+0x4fe/frame 0xfffffe0056db7b90
sendit() at sendit+0x15f/frame 0xfffffe0056db7bf0
sys_sendto() at sys_sendto+0x181/frame 0xfffffe0056db7d10
amd64_syscall() at amd64_syscall+0x4e2/frame 0xfffffe0056db7f30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0056db7f30
--- syscall (198, FreeBSD ELF64, __syscall), rip = 0x3a1afa, rsp = 0x826a2ff08, rbp = 0x826a2ff80 ---
KDB: enter: panic
[ thread pid 814 tid 100129 ]
Stopped at      kdb_enter+0x6e: movq    $0,0x25c43c7(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b
es                        0x3b
fs                        0x13
gs                        0x1b
ss                        0x28
rax                       0x12
rcx         0xfffffe006f600000
rdx                    0x7ffff
rbx         0xffffffff827cd460  .str.27
rsp         0xfffffe0056db6630
rbp         0xfffffe0056db6650
rsi                    0x80001
rdi         0xffffffff81614c99  printf+0x149
r8                           0
r9                  0xffffffff
r10                          0
r11                        0x5
r12         0xfffffe005411b780
r13         0xfffffffffffffffd
r14         0xffffffff827cd460  .str.27
r15                          0
rip         0xffffffff815fe7ce  kdb_enter+0x6e
rflags                    0x46
kdb_enter+0x6e: movq    $0,0x25c43c7(%rip)
db> show proc
Process 814 (syz-executor) at 0xfffffe0054100560:
 state: NORMAL
 uid: 0  gids: 0, 5
 parent: pid 765 at 0xfffffe0054108000
 ABI: FreeBSD ELF64
 flag: 0x10000080  flag2: 0
 arguments: ./syz-executor exec
 reaper: 0xfffffe0007809040 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffffe000780fdb0
   (map 0xfffffe000780fdb0)
   (map.pmap 0xfffffe000780fe50)
   (pmap 0xfffffe000780fec0)
 threads: 3
100116                   RunQ                                syz-executor
100126                   S       pipdwt  0xfffffe005987b9e0  syz-executor
100129                   L      *tun_mtx 0xfffffe000782de40  syz-executor
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
  817   766   766     0  R       (threaded)                  syz-executor
100117                   RunQ                                syz-executor
100130                   S       uwait   0xfffffe006e51aa00  syz-executor
  816   799   763     0  S       uwait   0xfffffe0053e11580  syz-executor
  815   812   423     0  L      *tun_mtx 0xfffffe000782de40  ifconfig
  814   765   765     0  R       (threaded)                  syz-executor
100116                   RunQ                                syz-executor
100126                   S       pipdwt  0xfffffe005987b9e0  syz-executor
100129                   L      *tun_mtx 0xfffffe000782de40  syz-executor
  812   805   423     0  S       wait    0xfffffe005410ab00  sh
  811     1   811     0  Ss      select  0xfffffe0059742ac0  dhclient
  808   764   764     0  R       (threaded)                  syz-executor
100115                   RunQ                                syz-executor
100123                   S       uwait   0xfffffe00584f4000  syz-executor
  805   783   423     0  S       wait    0xfffffe00541025a0  dhclient
  799   763   763     0  T       (threaded)                  syz-executor
100113                   Run     CPU 0                       syz-executor
100119                   D       tun_ioc 0xffffffff83cc3a40  syz-executor
100127                   S       uwait   0xfffffe0053e11480  syz-executor
  783   423   423     0  S       wait    0xfffffe0054102b00  sh
  766   762   766     0  R                                   syz-executor
  765   762   765     0  R                                   syz-executor
  764   762   764     0  R                                   syz-executor
  763   762   763     0  R                                   syz-executor
  762   760   760     0  S       select  0xfffffe00596cb840  syz-executor
  760   758   760     0  Ss      sigsusp 0xfffffe00541010d0  csh
  758   681   758     0  Ss      select  0xfffffe00596cb8c0  sshd
  747     1   747     0  Ss+     ttyin   0xfffffe0058298cb0  getty
  746     1   746     0  Ss+     ttyin   0xfffffe00582978b0  getty
  745     1   745     0  Ss+     ttyin   0xfffffe00585becb0  getty
  744     1   744     0  Ss+     ttyin   0xfffffe00585bf0b0  getty
  743     1   743     0  Ss+     ttyin   0xfffffe00585bf4b0  getty
  742     1   742     0  Ss+     ttyin   0xfffffe0058297cb0  getty
  741     1   741     0  Ss+     ttyin   0xfffffe00585bf8b0  getty
  740     1   740     0  Ss+     ttyin   0xfffffe00585bfcb0  getty
  739     1   739     0  Ss+     ttyin   0xfffffe00585c00b0  getty
  737     1    17     0  S+      piperd  0xfffffe005986b5c0  logger
  736   735    17     0  S+      nanslp  0xffffffff83ba3c00  sleep
  735     1    17     0  S+      wait    0xfffffe00540a8000  sh
  685     1   685     0  Ss      nanslp  0xffffffff83ba3c00  cron
  681     1   681     0  Ss      select  0xfffffe0059743840  sshd
  494     1   494     0  Ss      select  0xfffffe00596cc0c0  syslogd
  423     1   423     0  Ss      wait    0xfffffe00540045a0  devd
  422     1   422    65  Ss      select  0xfffffe00596cbac0  dhclient
  337     1   337     0  Ss      select  0xfffffe00597437c0  dhclient
  334     1   334     0  Ss      select  0xfffffe00596cba40  dhclient
   16     0     0     0  DL      syncer  0xffffffff83cc1820  [syncer]
   15     0     0     0  DL      vlruwt  0xfffffe000780a060  [vnlru]
   14     0     0     0  DL      (threaded)                  [bufdaemon]
100079                   D       psleep  0xffffffff83cbfd60  [bufdaemon]
100082                   D       -       0xffffffff83001ec0  [bufspacedaemon-0]
100093                   D       sdflush 0xfffffe0057dc74e8  [/ worker]
    9     0     0     0  DL      psleep  0xffffffff83d0ac80  [vmdaemon]
    8     0     0     0  DL      (threaded)                  [pagedaemon]
100077                   D       psleep  0xffffffff83cf0d48  [dom0]
100080                   D       launds  0xffffffff83cf0d54  [laundry: dom0]
100081                   D       umarcl  0xffffffff81de2520  [uma]
    7     0     0     0  DL      -       0xffffffff8391c5d8  [rand_harvestq]
    6     0     0     0  DL      pftm    0xffffffff843b29e0  [pf purge]
    5     0     0     0  DL      waiting 0xffffffff8484a700  [sctp_iterator]
    4     0     0     0  DL      (threaded)                  [cam]
100045                   D       -       0xffffffff838e6340  [doneq0]
100046                   D       -       0xffffffff838e62c0  [async]
100075                   D       -       0xffffffff838e6140  [scanner]
    3     0     0     0  DL      (threaded)                  [crypto]
100042                   D       crypto_ 0xffffffff83cec640  [crypto]
100043                   D       crypto_ 0xfffffe0053ea9030  [crypto returns 0]
100044                   D       crypto_ 0xfffffe0053ea9080  [crypto returns 1]
   13     0     0     0  DL      (threaded)                  [geom]
100037                   D       -       0xffffffff83b4c600  [g_event]
100038                   D       -       0xffffffff83b4c620  [g_up]
100039                   D       -       0xffffffff83b4c640  [g_down]
    2     0     0     0  WL      (threaded)                  [clock]
100031                   I                                   [clock (0)]
100032                   I                                   [clock (1)]
   12     0     0     0  WL      (threaded)                  [intr]
100013                   I                                   [swi6: task queue]
100014                   I                                   [swi6: Giant taskq]
100016                   I                                   [swi5: fast taskq]
100033                   I                                   [swi1: netisr 0]
100034                   I                                   [swi1: hpts]
100035                   I                                   [swi1: hpts]
100047                   I                                   [irq24: virtio_pci0]
100048                   I                                   [irq25: virtio_pci0]
100049                   I                                   [irq26: virtio_pci0]
100050                   I                                   [irq27: virtio_pci0]
100051                   I                                   [irq28: virtio_pci1]
100052                   I                                   [irq29: virtio_pci1]
100053                   I                                   [irq30: virtio_pci1]
100054                   I                                   [irq31: virtio_pci1]
100055                   I                                   [irq32: virtio_pci1]
100060                   I                                   [irq10: virtio_pci2]
100062                   I                                   [irq1: atkbd0]
100063                   I                                   [irq12: psm0]
100064                   I                                   [swi0: uart uart++]
100068                   I                                   [swi1: pf send]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffffe0007809040  [init]
   10     0     0     0  DL      audit_w 0xffffffff83ced0e0  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       parked  0xffffffff84c3eff0  [swapper]
100005                   D       -       0xfffffe00083f7000  [softirq_0]
100006                   D       -       0xfffffe00083f6e00  [softirq_1]
100007                   D       -       0xfffffe00083f6d00  [if_io_tqg_0]
100008                   D       -       0xfffffe00083f6c00  [if_io_tqg_1]
100009                   D       -       0xfffffe00083f6b00  [if_config_tqg_0]
100010                   D       -       0xfffffe00083f6a00  [kqueue_ctx taskq]
100011                   D       -       0xfffffe00083f6900  [jail_remove taskq]
100012                   D       -       0xfffffe00083f6800  [bus taskq]
100015                   D       -       0xfffffe00083f6500  [thread taskq]
100017                   D       -       0xfffffe00083f6300  [aiod_kick taskq]
100018                   D       -       0xfffffe00083f6200  [deferred_unmount ta]
100019                   D       -       0xfffffe00083f6100  [inm_free taskq]
100020                   D       -       0xfffffe00083f6000  [in6m_free taskq]
100021                   D       -       0xfffffe00083f5e00  [linuxkpi_irq_wq]
100022                   D       -       0xfffffe00083f5d00  [linuxkpi_short_wq_0]
100023                   D       -       0xfffffe00083f5d00  [linuxkpi_short_wq_1]
100024                   D       -       0xfffffe00083f5d00  [linuxkpi_short_wq_2]
100025                   D       -       0xfffffe00083f5d00  [linuxkpi_short_wq_3]
100026                   D       -       0xfffffe00083f5c00  [linuxkpi_long_wq_0]
100027                   D       -       0xfffffe00083f5c00  [linuxkpi_long_wq_1]
100028                   D       -       0xfffffe00083f5c00  [linuxkpi_long_wq_2]
100029                   D       -       0xfffffe00083f5c00  [linuxkpi_long_wq_3]
100036                   D       -       0xfffffe00083f5b00  [firmware taskq]
100040                   D       -       0xfffffe00083f5a00  [crypto_0]
100041                   D       -       0xfffffe00083f5a00  [crypto_1]
100056                   D       -       0xfffffe00083f5800  [vtnet0 rxq 0]
100057                   D       -       0xfffffe00083f5700  [vtnet0 txq 0]
100058                   D       -       0xfffffe00083f5600  [vtnet0 rxq 1]
100059                   D       -       0xfffffe00083f5500  [vtnet0 txq 1]
100061                   D       vtbslp  0xfffffe0057d80e00  [virtio_balloon]
100065                   D       -       0xffffffff827d1b41  [deadlkres]
100069                   D       -       0xfffffe005940b300  [acpi_task_0]
100070                   D       -       0xfffffe005940b300  [acpi_task_1]
100071                   D       -       0xfffffe005940b300  [acpi_task_2]
100073                   D       -       0xfffffe00083f7100  [mca taskq]
100074                   D       -       0xfffffe00083f5900  [CAM taskq]
100076                   D       -       0xfffffe005940b200  [ipsec_offload]
db> show all locks
Process 815 (ifconfig) thread 0xfffffe0054113000 (100120)
exclusive sx tun_ioctl (tun_ioctl) r = 0 (0xffffffff83cc3a40) locked @ /syzkaller/managers/main/kernel/sys/net/if_tuntap.c:1340
exclusive sx in_control (in_control) r = 0 (0xffffffff83cc6660) locked @ /syzkaller/managers/main/kernel/sys/netinet/in.c:367
Process 814 (syz-executor) thread 0xfffffe005411b780 (100129)
exclusive rw rawinp (rawinp) r = 0 (0xfffffe006dddfaa0) locked @ /syzkaller/managers/main/kernel/sys/netinet6/raw_ip6.c:402
exclusive sx so_snd_sx (so_snd_sx) r = 0 (0xfffffe006b748580) locked @ /syzkaller/managers/main/kernel/sys/kern/uipc_socket.c:4835
Process 799 (syz-executor) thread 0xfffffe00540fd000 (100113)
exclusive sleep mutex process lock (process lock) r = 0 (0xfffffe0054103188) locked @ /syzkaller/managers/main/kernel/sys/kern/kern_exit.c:259
Process 799 (syz-executor) thread 0xfffffe0054113780 (100119)
exclusive sleep mutex tun_mtx (tun_mtx) r = 0 (0xfffffe006de15688) locked @ /syzkaller/managers/main/kernel/sys/net/if_tuntap.c:1641
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            6        12804K            6
            linker          376         5079K          489
          tcp_hpts            7         4801K            7
            devbuf         4187         4323K         4212
         sysctloid        34891         2055K        34966
             vtbuf           24         1968K           46
              kobj          330         1320K          494
            newblk          408         1126K          444
          vfscache            3         1025K            3
               pcb           28          671K           57
          inodedep           72          539K           98
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          120          238K          885
         vnet_data            2          224K            2
          acpitask            1          224K            1
            KTRACE          100          200K          100
            acpica         1674          184K        54426
          filedesc           20          153K           73
              vmem            5          144K            7
           tidhash            3          141K            3
           pagedep           22          134K           30
        tfo_ccache            1          128K            1
          IP reass            1          128K            1
               sem            4          106K            4
            DEVFS1          106          106K          123
        gtaskqueue           18           98K           18
               bus          997           82K         5063
          mtx_pool            3           74K            3
          syncache            1           68K            1
     NFSD srvcache            3           68K            3
            module          521           66K          521
       ddb_capture            1           64K            1
           kdtrace          182           36K          949
              umtx          272           34K          272
         hostcache            1           32K            1
               shm            1           32K            1
            DEVFS3          125           32K          135
               msg            4           30K            4
            kbdmux            6           28K            6
              temp           31           21K         1824
        DEVFS_RULE           56           20K           56
            ifaddr           67           19K           69
               BPF           14           19K           14
         ufs_mount            4           17K            5
              proc            3           17K            3
               LRO           16           17K           16
               tty           16           16K           16
          routetbl          124           16K          395
           ithread           90           15K           90
            bus-sc           34           15K         1647
           lltable           44           14K           44
      eventhandler          163           14K          163
             ifnet            7           13K            7
       ether_multi          152           13K          162
              kenv           95           12K           95
              GEOM           49           11K          431
         CAM queue            5           11K         1528
              rman           82           10K          437
            plimit           24            9K          333
               rpc            8            9K            8
              cred           23            9K          180
         in6_multi           65            9K           65
         bmsafemap            3            9K           65
           devstat            4            9K            4
              UART           12            9K           12
              ksem            1            8K            1
             shmfd            1            8K            1
       pfs_vncache            1            8K            1
     audit_evclass          240            8K          303
         taskqueue           69            8K           69
            sglist            6            7K            6
           CAM DEV            3            6K          510
            kqueue           62            6K          831
         pfs_nodes           22            6K           22
            dirrem           21            6K           45
       ufs_dirhash           24            5K           24
               UMA          266            5K          266
          pf_ifnet           10            5K           19
            diradd           34            5K           62
                vt           11            5K           11
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
           acpisem           28            4K           28
           pwddesc           53            4K          818
             selfd           45            3K         7105
          terminal           11            3K           11
            DEVFSP           44            3K           47
         proc-args           85            3K         1864
           session           21            3K           32
          indirdep           10            3K           10
           acpidev           20            3K           20
             hhook            8            3K           10
             clone            9            3K            9
           uidinfo            3            3K            6
          kcovinfo           36            3K           36
        local_apic            1            2K            1
           io_apic            1            2K            1
             mkdir           16            2K           40
         ipsec-saq            2            2K            2
            ip6ndp           12            2K           13
             lockf           18            2K           25
            Unitno           28            2K           50
          sctp_ifa           13            2K           14
           CAM XPT           22            2K          543
         newdirblk           12            2K           20
          in_multi            6            2K            8
               tun            4            2K            4
         toponodes            6            2K            6
       ipsecpolicy            2            2K            2
            select           10            2K           28
               msi            9            2K            9
           netlink            2            2K           70
           softdep            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
            CC Mem            8            1K           10
             nhops            6            1K            8
       vnodemarker            2            1K            8
      NFSD session            1            1K            1
        CAM periph            4            1K          271
          sctp_ifn            6            1K           14
             ipsec            3            1K            3
               mld            6            1K            6
              igmp            6            1K            6
              pfil            6            1K            6
            isadev            6            1K            6
             mount           16            1K           89
          pci_link           10            1K           10
               osd           13            1K           27
            crypto            4            1K            4
 encap_export_host           12            1K           12
       inpcbpolicy           18            1K          160
              cdev            2            1K            2
       lkpikmalloc            8            1K            9
      counter_rate           13            1K           13
         sctp_atcl            1            1K            3
    chacha20random            1            1K            1
            biobuf            1            1K            1
            ip6opt            2            1K            5
         sctp_timw            1            1K            1
          freefile            2            1K           11
            vnodes            1            1K            1
          procdesc            2            1K            8
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
           CAM SIM            2            1K            2
            feeder            7            1K            7
           tcpfunc            3            1K            3
        loginclass            3            1K            5
            prison            6            1K            6
            soname            5            1K         3312
         cryptodev            2            1K           35
          nexusdev            8            1K            8
            apmdev            1            1K            1
          atkbddev            2            1K            2
          pmchooks            1            1K            1
          CAM path            4            1K         1034
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
          filecaps            4            1K           70
          sctp_vrf            1            1K            1
              vnet            1            1K            1
               pmc            1            1K            1
           entropy            2            1K           32
          acpiintr            1            1K            1
         sctp_atky            1            1K            4
              cpus            2            1K            2
      ip6_moptions            1            1K            1
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
         sctp_athm            1            1K            3
          freework            1            1K           30
          p1003.1b            1            1K            1
           filemon            0            0K            0
        sctp_mcore            0            0K            0
        sctp_socko            0            0K            0
         sctp_iter            0            0K           10
         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           10
         sctp_aadr            0            0K            0
         sctp_stro            0            0K            1
         sctp_stri            0            0K            0
          sctp_map            0            0K            2
            ipcomp            0            0K            0
               esp            0            0K            0
                ah            0            0K            0
            mqdata            0            0K            0
      tcp_pcm_rack            0            0K            0
       tcp_do_rack            0            0K            0
      tcp_fsb_rack            0            0K            0
          pf_table            0            0K            0
           pf_rule            0            0K            0
           pf_altq            0            0K            0
           pf_osfp            0            0K            0
     pf_krule_item            0            0K            0
           pf_temp            0            0K            0
        madt_table            0            0K            2
          smartpqi            0            0K            0
               ixl            0            0K            0
        ice-resmgr            0            0K            0
         ice-osdep            0            0K            0
               ice            0            0K            0
              iavf            0            0K            0
             axgbe            0            0K            0
       fpukern_ctx            0            0K            0
          xen_intr            0            0K            0
           xen_hvm            0            0K            0
         legacydrv            0            0K            0
      NMI handlers            0            0K            0
            bounce            0            0K            0
            busdma            0            0K            0
            qpidrv            0            0K            0
      dmar_idpgtbl            0            0K            0
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8322    1076       12258       0     254   38494208        0
              mbuf    256    8647    1015       14624       0     254    2473472        0
          BUF TRIE    152     207   11597         455       0      62    1794208        0
        malloc-384    384    4157      43        4169       0      30    1612800        0
        malloc-128    128   12058     187       12652       0     126    1567360        0
       malloc-4096   4096     333       3        1053       0       2    1376256        0
           tcp_log    416     463    2840        3769       0     254    1374048        0
       UMA Slabs 0    112   10975      35       10975       0     126    1233120        0
      mbuf_cluster   2048     508       0         508       0     254    1040384        0
        RADIX NODE    152    6199     140       26339       0      62     963528        0
         vmem btag     56   16196     115       16196       0     254     913416        0
      malloc-65536  65536      13       0          16       0       1     851968        0
         FFS inode   1168     538      15         549       0       8     645904        0
         sctp_asoc   2256       0     255           1       0     254     575280        0
            socket   1024      32     476        1353       0     254     520192        0
          lkpicurr    168       2    3094           2       0      62     520128        0
              pbuf   2624       0     198           0       0       2     519552        0
       malloc-2048   2048       5     179         514       0       8     376832        0
        256 Bucket   2048     130      16        1010       0       8     299008        0
           sctp_ep   1152       1     258           2       0     254     298368        0
         VM OBJECT    248    1129      55       13332       0      62     293632        0
             VNODE    440     575      28         588       0      30     265320        0
         malloc-64     64    4002      93        4035       0     254     262080        0
            THREAD   1860     128       8         130       0       8     252960        0
       malloc-4096   4096      54       4         823       0       2     237568        0
         malloc-16     16   14417      83       14543       0     254     232000        0
      malloc-32768  32768       7       0           7       0       1     229376        0
      malloc-16384  16384      13       1          39       0       1     229376        0
       malloc-2048   2048     104       8         128       0       8     229376        0
            DEVCTL   1024      20     200         147       0       0     225280        0
        sctp_raddr    736       0     264           1       0     254     194304        0
         UMA Zones    768     238       1         238       0      16     183552        0
         malloc-32     32    5325     345        5385       0     254     181440        0
        malloc-128    128    1156     239       25544       0     126     178560        0
            lkpimm     56       1    3095           1       0     254     173376        0
             unpcb    320      11     505        1165       0     254     165120        0
       FFS2 dinode    256     538      92         549       0      62     161280        0
       malloc-1024   1024     122      22         146       0      16     147456        0
         MAP ENTRY     96    1314     198       41448       0     126     145152        0
      malloc-65536  65536       2       0           2       0       1     131072        0
      malloc-65536  65536       0       2          56       0       1     131072        0
      malloc-65536  65536       0       2         110       0       1     131072        0
      malloc-65536  65536       2       0           2       0       1     131072        0
        malloc-256    256     432      78         590       0      62     130560        0
       mbuf_packet    256       4     504         131       0     254     130048        0
       S VFS Cache    104     996     174        1043       0     126     121680        0
     FPU_save_area    832     130      14         139       0      16     119808        0
          ksiginfo    112      46     998          63       0     126     116928        0
              PROC   1376      52      14         817       0       8      90816        0
       malloc-4096   4096      16       6          64       0       2      90112        0
          UMA Kegs    384     225       8         225       0      30      89472        0
        128 Bucket   1024      41      42         246       0      16      84992        0
        malloc-256    256     224      91         364       0      62      80640        0
         filedesc0   1072      53      17         818       0       8      75040        0
         malloc-64     64     627     444        2630       0     254      68544        0
         malloc-64     64     512     559        1558       0     254      68544        0
        malloc-128    128     324     203         327       0     126      67456        0
        malloc-128    128     344     183         674       0     126      67456        0
      malloc-65536  65536       0       1           8       0       1      65536        0
      malloc-32768  32768       0       2         120       0       1      65536        0
       malloc-4096   4096      13       3          25       0       2      65536        0
        malloc-256    256     155     100         592       0      62      65280        0
             g_bio    408       0     150        4829       0      30      61200        0
        malloc-384    384     116      34         476       0      30      57600        0
        malloc-256    256     101      94         218       0      62      49920        0
         32 Bucket    256      57     138         456       0      62      49920        0
           DIRHASH   1024      34      14          34       0      16      49152        0
             NAMEI   1024       0      48       12659       0      16      49152        0
      malloc-16384  16384       1       2         191       0       1      49152        0
       malloc-8192   8192       6       0           7       0       1      49152        0
       malloc-8192   8192       4       2          87       0       1      49152        0
       malloc-2048   2048      15       9          31       0       8      49152        0
       malloc-2048   2048       2      22         575       0       8      49152        0
       malloc-1024   1024      11      37         519       0      16      49152        0
         64 Bucket    512      65      31        1745       0      30      49152        0
          syncache    168       0     264           3       0     254      44352        0
       malloc-8192   8192       5       0           5       0       1      40960        0
            pcpu-8      8    4698     422        4855       0     254      40960        0
              pipe    736      21      34         289       0      16      40480        0
            da_ccb    544       0      70        1307       0      16      38080        0
         udp_inpcb    408       7      83         143       0      30      36720        0
         malloc-64     64      15     552          48       0     254      36288        0
         malloc-64     64     277     290       13588       0     254      36288        0
         malloc-64     64     100     467        8499       0     254      36288        0
         malloc-64     64      19     548          78       0     254      36288        0
         malloc-64     64      45     522          47       0     254      36288        0
        malloc-128    128      51     228         117       0     126      35712        0
        malloc-128    128      36     243        3284       0     126      35712        0
        malloc-128    128     126     153         628       0     126      35712        0
        malloc-128    128      95     184         107       0     126      35712        0
     routing nhops    256      26     109          34       0      62      34560        0
           ttyoutq    256      72      63         160       0      62      34560        0
        malloc-384    384      69      21          69       0      30      34560        0
        malloc-384    384      53      37          54       0      30      34560        0
        malloc-256    256      55      80          69       0      62      34560        0
        malloc-256    256      48      87         128       0      62      34560        0
        malloc-256    256      29     106         372       0      62      34560        0
        malloc-256    256      19     116         969       0      62      34560        0
      malloc-32768  32768       0       1          11       0       1      32768        0
      malloc-16384  16384       2       0           2       0       1      32768        0
       malloc-8192   8192       2       2          21       0       1      32768        0
       malloc-2048   2048       9       7          21       0       8      32768        0
       malloc-2048   2048       4      12          50       0       8      32768        0
       malloc-2048   2048       3      13           3       0       8      32768        0
       malloc-2048   2048       2      14         195       0       8      32768        0
       malloc-1024   1024       2      30          46       0      16      32768        0
       malloc-1024   1024       1      31         983       0      16      32768        0
       malloc-1024   1024       5      27         162       0      16      32768        0
       malloc-1024   1024      10      22          14       0      16      32768        0
       malloc-1024   1024      19      13          24       0      16      32768        0
       malloc-1024   1024       1      31          16       0      16      32768        0
        malloc-512    512       0      64         110       0      30      32768        0
        malloc-512    512       6      58          11       0      30      32768        0
        malloc-512    512       1      63          15       0      30      32768        0
        malloc-512    512       4      60          57       0      30      32768        0
        malloc-512    512       2      62          22       0      30      32768        0
        malloc-512    512       8      56           8       0      30      32768        0
           pcpu-64     64     498      14         498       0     254      32768        0
            ttyinq    160     135      65         300       0      62      32000        0
              PGRP    120      25     239          36       0     126      31680        0
            clpbuf   2624       0      12          19       0       4      31488        0
           VMSPACE    584      37      12         803       0      16      28616        0
        sctp_laddr     48       0     588          12       0     254      28224        0
         malloc-32     32     379     503        2339       0     254      28224        0
         16 Bucket    144      50     146         246       0      62      28224        0
          4 Bucket     48       7     581           9       0     254      28224        0
         TURNSTILE    136     137      52         137       0      62      25704        0
            cpuset    200       7     121           7       0      62      25600        0
       malloc-8192   8192       3       0           3       0       1      24576        0
       malloc-4096   4096       3       3         186       0       2      24576        0
    ertt_txseginfo     40       0     606         162       0     254      24240        0
               PWD     40      19     587         101       0     254      24240        0
           rtentry    168      29     115          34       0      62      24192        0
             Files     80     181     119        6795       0     126      24000        0
          8 Bucket     80      63     237         323       0     126      24000        0
         tcp_inpcb   1304       8      10          10       0       8      23472        0
        malloc-384    384      23      37          26       0      30      23040        0
        malloc-384    384      23      37         523       0      30      23040        0
        malloc-384    384       7      53           7       0      30      23040        0
             ripcb    376       3      57           7       0      30      22560        0
       Mountpoints   2816       2       6           2       0       4      22528        0
        SLEEPQUEUE     88     137     119         137       0     126      22528        0
         hostcache     64       1     314           1       0     254      20160        0
              ertt     72       8     272          10       0     126      20160        0
         malloc-32     32      62     568         186       0     254      20160        0
         malloc-32     32      41     589         480       0     254      20160        0
         malloc-32     32     119     511         148       0     254      20160        0
         malloc-32     32     109     521         287       0     254      20160        0
         malloc-32     32      40     590        2683       0     254      20160        0
          2 Bucket     32      53     577         323       0     254      20160        0
             KNOTE    160       2     123          10       0      62      20000        0
              vmem   1856       2       7           2       0       8      16704        0
 epoch_record pcpu    256       4      60           4       0      62      16384        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-8192   8192       1       1          27       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-4096   4096       3       1           3       0       2      16384        0
       malloc-4096   4096       1       3           3       0       2      16384        0
       malloc-4096   4096       0       4           3       0       2      16384        0
        malloc-512    512       2      30           2       0      30      16384        0
        malloc-512    512       1      31           2       0      30      16384        0
           SMR CPU     32       8     503           8       0     254      16352        0
              kenv    258      17      43        1066       0      30      15480        0
            mqnode    416       3      33           3       0      30      14976        0
        SMR SHARED     24       8     503           8       0     254      12264        0
         malloc-32     32       3     375          22       0     254      12096        0
         malloc-16     16      18     732          56       0     254      12000        0
         malloc-16     16      45     705         197       0     254      12000        0
         malloc-16     16      37     713          43       0     254      12000        0
         malloc-16     16     233     517        4475       0     254      12000        0
         malloc-16     16       4     746           6       0     254      12000        0
         malloc-16     16     266     484         267       0     254      12000        0
         malloc-16     16      20     730       24807       0     254      12000        0
           pcpu-16     16       8     504           8       0     254       8192        0
      vtnet_tx_hdr     24       0     167        1297       0     254       4008        0
       UMA Slabs 1    176       9      13           9       0      62       3872        0
        KMAP ENTRY     96      12      27          14       0       0       3744        0
       FFS1 dinode    128       0       0           0       0     126          0        0
           ada_ccb    272       0       0           0       0      30          0        0
             swblk    136       0       0           0       0      62          0        0
          swpctrie    152       0       0           0       0      62          0        0
   cdg_qdiffsample     16       0       0           0       0     254          0        0
   pf state scrubs     40       0       0           0       0     254          0        0
   pf frag entries     40       0       0           0       0     254          0        0
  pf fragment node     72       0       0           0       0     126          0        0
          pf frags    232       0       0           0       0      62          0        0
  pf table entries    160       0       0           0       0     254          0        0
pf table entry counters     64       0       0           0       0     254          0        0
   pf UDP mappings    104       0       0           0       0     126          0        0
   pf source nodes    152       0       0           0       0     254          0        0
     pf state keys     88       0       0           0       0     126          0        0
         pf states    384       0       0           0       0     254          0        0
           pf tags    104       0       0           0       0     126          0        0
          pf mtags    184       0       0           0       0      62          0        0
       tcp_bbr_pcb    896       0       0           0       0      16          0        0
       tcp_bbr_map    128       0       0           0       0     126          0        0
      tcp_rack_pcb   1088       0       0           0       0       8          0        0
      tcp_rack_map    128       0       0           0       0     126          0        0
tfo_ccache_entries     80       0       0           0       0     126          0        0
               tfo      4       0       0           0       0     254          0        0
          sackhole     32       0       0           0       0     254          0        0
               ipq     56       0       0           0       0     254          0        0
   sctp_asconf_ack     48       0       0           0       0     254          0        0
       sctp_asconf     40       0       0           0       0     254          0        0
sctp_stream_msg_out    112       0       0           0       0     254          0        0
        sctp_readq    152       0       0           0       0     254          0        0
        sctp_chunk    152       0       0           0       0     254          0        0
   tcp_log_id_node    120       0       0           0       0     126          0        0
 tcp_log_id_bucket    176       0       0           0       0      62          0        0
          tcpreass     48       0       0           0       0     254          0        0
     udplite_inpcb    408       0       0           0       0      30          0        0
    IPsec SA lft_c     16       0       0           0       0     254          0        0
            itimer    352       0       0           0       0      30          0        0
            AIOLIO    272       0       0           0       0      30          0        0
             AIOCB    552       0       0           0       0      16          0        0
               AIO    208       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
        TMPFS node    240       0       0           0       0      62          0        0
           NCLNODE    608       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     32       0       0           0       0     254          0        0
  linux_dma_pctrie    152       0       0           0       0      62          0        0
   IOMMU_MAP_ENTRY    112       0       0           0       0     126          0        0
            skbuff   1808       0       0           0       0       8          0        0
    mbuf_jumbo_16k  16384       0       0           0       0     254          0        0
     mbuf_jumbo_9k   9216       0       0           0       0     254          0        0
      audit_record   1280       0       0           0       0       8          0        0
         domainset     40       0       0           0       0     254          0        0
        MAC labels     40       0       0           0       0     254          0        0
            vnpbuf   2624       0       0           0       0      16          0        0
           nfspbuf   2624       0       0           0       0       4          0        0
            swwbuf   2624       0       0           0       0       2          0        0
            swrbuf   2624       0       0           0       0       4          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    152       0       0           0       0      62          0        0
          rl_entry     48       0       0           0       0     254          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
       malloc-8192   8192       0       0           0       0       1          0        0
        malloc-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     88       0       0           0       0     126          0        0
          UMA Hash    256       0       0           0       0      62          0        0
db> show all tcpcbs/bl

Crashes (276):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/05 00:04 freebsd-src 9a1b3303352b 8e9d1dc1 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/08/03 22:11 freebsd-src 877e70e6087f 8e9d1dc1 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/08/02 11:27 freebsd-src d1095367eb51 8e9d1dc1 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/08/02 00:14 freebsd-src 011efaa5cd24 8e9d1dc1 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/07/31 22:18 freebsd-src 3a686b851f8f 8e9d1dc1 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/07/31 12:25 freebsd-src a01ce3b87d83 8e9d1dc1 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/07/30 13:10 freebsd-src 14598537acec 8e9d1dc1 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/07/30 07:56 freebsd-src 507f8523f5f6 8e9d1dc1 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/07/30 00:53 freebsd-src 507f8523f5f6 8e9d1dc1 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/07/27 06:46 freebsd-src 92dfc3fbcd79 8e9d1dc1 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/08/05 02:55 freebsd-src 9a1b3303352b 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/05 01:38 freebsd-src 9a1b3303352b 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/04 21:13 freebsd-src 9a1b3303352b 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/04 13:50 freebsd-src 37056594f0ef 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/04 10:07 freebsd-src 37056594f0ef 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/04 08:26 freebsd-src 37056594f0ef 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/04 05:29 freebsd-src 37056594f0ef 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/03 16:08 freebsd-src 877e70e6087f 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/03 13:56 freebsd-src 877e70e6087f 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/03 10:18 freebsd-src 95f8c3e1ed0c 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/03 08:49 freebsd-src 95f8c3e1ed0c 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/03 06:05 freebsd-src 95f8c3e1ed0c 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/03 03:30 freebsd-src 95f8c3e1ed0c 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/02 17:38 freebsd-src d1095367eb51 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/02 07:43 freebsd-src 011efaa5cd24 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/02 04:39 freebsd-src 011efaa5cd24 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/02 01:17 freebsd-src 011efaa5cd24 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/01 15:58 freebsd-src f61c48f4403f 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/01 10:32 freebsd-src f61c48f4403f 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/01 09:25 freebsd-src f61c48f4403f 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/01 02:09 freebsd-src ada5bba476bf 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/08/01 01:18 freebsd-src ada5bba476bf 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/31 16:12 freebsd-src ada5bba476bf 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/31 07:10 freebsd-src a01ce3b87d83 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/30 23:45 freebsd-src 14598537acec 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/30 21:41 freebsd-src 14598537acec 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/30 19:19 freebsd-src 14598537acec 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/30 17:37 freebsd-src 14598537acec 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/30 15:15 freebsd-src 14598537acec 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/30 11:54 freebsd-src 507f8523f5f6 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/30 11:51 freebsd-src 507f8523f5f6 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/30 10:20 freebsd-src 507f8523f5f6 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/29 14:47 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/29 13:21 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/29 06:56 freebsd-src 9f0f30bc1f5f 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/29 01:17 freebsd-src 9f0f30bc1f5f 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/28 14:09 freebsd-src c0fae431fd6a 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/28 12:26 freebsd-src c0fae431fd6a 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/28 07:34 freebsd-src c0fae431fd6a 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/28 01:39 freebsd-src f2de5a6dd7bb 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/28 00:29 freebsd-src f2de5a6dd7bb 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/27 17:09 freebsd-src f2de5a6dd7bb 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/07/27 07:58 freebsd-src 92dfc3fbcd79 8e9d1dc1 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/06/06 11:36 freebsd-src 6d46fd2cbea4 3d899f2c console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
* Struck through repros no longer work on HEAD.