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: 193d, last: 34m

Sample crash report:
panic: sleeping thread holds tun_mtx
cpuid = 0
time = 1765883898
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056c829d0
kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056c82b30
vpanic() at vpanic+0x257/frame 0xfffffe0056c82cf0
panic() at panic+0xb5/frame 0xfffffe0056c82db0
propagate_priority() at propagate_priority+0x521/frame 0xfffffe0056c82e00
turnstile_wait() at turnstile_wait+0x663/frame 0xfffffe0056c82e70
__mtx_lock_sleep() at __mtx_lock_sleep+0x452/frame 0xfffffe0056c82fb0
__mtx_lock_flags() at __mtx_lock_flags+0x1fe/frame 0xfffffe0056c830a0
tunstart_l2() at tunstart_l2+0x74/frame 0xfffffe0056c83100
tap_transmit() at tap_transmit+0x1d0/frame 0xfffffe0056c83150
ether_output_frame() at ether_output_frame+0x30c/frame 0xfffffe0056c83210
ether_output() at ether_output+0x114b/frame 0xfffffe0056c83380
ip6_output_send() at ip6_output_send+0x1b6/frame 0xfffffe0056c83400
ip6_output() at ip6_output+0x44de/frame 0xfffffe0056c83930
mld_dispatch_packet() at mld_dispatch_packet+0x8d1/frame 0xfffffe0056c83a90
mld_fasttimo() at mld_fasttimo+0x1900/frame 0xfffffe0056c83cd0
softclock_call_cc() at softclock_call_cc+0x422/frame 0xfffffe0056c83e80
softclock_thread() at softclock_thread+0x200/frame 0xfffffe0056c83ef0
fork_exit() at fork_exit+0xcc/frame 0xfffffe0056c83f30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0056c83f30
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 2 tid 100031 ]
Stopped at      kdb_enter+0x6e: movq    $0,0x2589ee7(%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         0xfffffe0002bf1850
rdx                          0
rbx         0xffffffff82837620  .str.27
rsp         0xfffffe0056c82b10
rbp         0xfffffe0056c82b30
rsi                          0
rdi         0xffffffff81660bc9  printf+0x149
r8                           0
r9                  0xffffffff
r10                        0x6
r11                        0x5
r12         0xfffffe000781a780
r13         0xfffffffffffffffe
r14         0xffffffff82837620  .str.27
r15                          0
rip         0xffffffff81649fae  kdb_enter+0x6e
rflags                    0x46
kdb_enter+0x6e: movq    $0,0x2589ee7(%rip)
db> show proc
Process 2 (clock) at 0xfffffe0007808008:
 state: NORMAL
 uid: 0 gid: 0 supp gids: 0
 parent: pid 0 at 0xffffffff83b5df60
 ABI: null
 flag: 0x10000284  flag2: 0
 reaper: 0xffffffff83b5df60 reapsubtree: 2
 sigparent: 20
 vmspace: 0xffffffff83b5ef40
   (map 0xffffffff83b5ef40)
   (map.pmap 0xffffffff83b5efe0)
   (pmap 0xffffffff83b5f050)
 threads: 2
100031                   L      *tun_mtx 0xfffffe000782dc00  [clock (0)]
100032                   I                                   [clock (1)]
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
  821   766   821     0  Ds      (threaded)                  syz-executor
100136                   S       nanslp  0xffffffff83bb4f41  syz-executor
100137                   D       bo_wwai 0xfffffe006e03ed70  syz-executor
100138                   D       ufs     0xfffffe006e03ec78  syz-executor
100139                   D       ufs     0xfffffe006e03ee30  syz-executor
100140                   D       ufs     0xfffffe006e03ec78  syz-executor
100141                   D       ufs     0xfffffe006e03ee30  syz-executor
100142                   S       uwait   0xfffffe005948a200  syz-executor
  818   816   423     0  L      *tun_mtx 0xfffffe000782dc00  ifconfig
  817     1   766     0  S       uwait   0xfffffe006dfb7c80  syz-executor
  816   806   423     0  S       wait    0xfffffe00586f6ab8  sh
  815     1   815     0  Ss      select  0xfffffe005808b140  dhclient
  812     0     0     0  DL      aiordy  0xfffffe00586f8018  [aiod4]
  811     0     0     0  DL      aiordy  0xfffffe00586f8570  [aiod3]
  810     0     0     0  DL      aiordy  0xfffffe005869e008  [aiod2]
  809     0     0     0  DL      aiordy  0xfffffe005869d000  [aiod1]
  807   764   764     0  D       tun_ioc 0xffffffff83ce4ce0  ifconfig
  806   787   423     0  S       wait    0xfffffe0058711ac0  dhclient
  805   763   763     0  T       (threaded)                  syz-executor
100117                   Run     CPU 1                       syz-executor
100121                   D       tun_ioc 0xffffffff83ce4ce0  syz-executor
100135                   S       uwait   0xfffffe0059489d80  syz-executor
  804   765   765     0  S       (threaded)                  syz-executor
100092                   S       nanslp  0xffffffff83bb4f40  syz-executor
100120                   S       select  0xfffffe005808b040  syz-executor
100130                   S       uwait   0xfffffe006dfb7d80  syz-executor
  787   423   423     0  S       wait    0xfffffe005870f000  sh
  766   762   766     0  S       nanslp  0xffffffff83bb4f40  syz-executor
  765   762   765     0  S       nanslp  0xffffffff83bb4f40  syz-executor
  764   762   764     0  S       wait    0xfffffe00586d5018  syz-executor
  763   762   763     0  S       nanslp  0xffffffff83bb4f40  syz-executor
  762   760   760     0  S       select  0xfffffe005808b640  syz-executor
  760   758   760     0  Ss      sigsusp 0xfffffe00586d5620  csh
  758   681   758     0  Ss      select  0xfffffe005808b740  sshd
  747     1   747     0  Ss+     ttyin   0xfffffe00084ec8b0  getty
  746     1   746     0  Ss+     ttyin   0xfffffe00594928b0  getty
  745     1   745     0  Ss+     ttyin   0xfffffe0059492cb0  getty
  744     1   744     0  Ss+     ttyin   0xfffffe00594930b0  getty
  743     1   743     0  Ss+     ttyin   0xfffffe00594934b0  getty
  742     1   742     0  Ss+     ttyin   0xfffffe00594938b0  getty
  741     1   741     0  Ss+     ttyin   0xfffffe0059493cb0  getty
  740     1   740     0  Ss+     ttyin   0xfffffe00084eb4b0  getty
  739     1   739     0  Ss+     ttyin   0xfffffe00084eb8b0  getty
  737   735    17     0  S+      nanslp  0xffffffff83bb4f40  sleep
  736     1    17     0  S+      piperd  0xfffffe00598f68a0  logger
  735     1    17     0  S+      wait    0xfffffe00586d2558  sh
  685     1   685     0  Ss      nanslp  0xffffffff83bb4f40  cron
  681     1   681     0  Ss      select  0xfffffe005808bb40  sshd
  494     1   494     0  Ss      select  0xfffffe00580731c0  syslogd
  423     1   423     0  Ss      wait    0xfffffe005869f568  devd
  422     1   422    65  Ss      select  0xfffffe00580732c0  dhclient
  337     1   337     0  Ss      select  0xfffffe005806dec0  dhclient
  334     1   334     0  Ss      select  0xfffffe00542a8840  dhclient
   16     0     0     0  DL      syncer  0xffffffff83ce2ae0  [syncer]
   15     0     0     0  DL      vlruwt  0xfffffe000780a018  [vnlru]
   14     0     0     0  DL      (threaded)                  [bufdaemon]
100079                   D       psleep  0xffffffff83ce1020  [bufdaemon]
100082                   D       -       0xffffffff83001ec0  [bufspacedaemon-0]
100093                   D       sdflush 0xfffffe0057f14ce8  [/ worker]
    9     0     0     0  DL      psleep  0xffffffff83d22340  [vmdaemon]
    8     0     0     0  DL      (threaded)                  [pagedaemon]
100077                   D       psleep  0xffffffff83d08408  [dom0]
100080                   D       launds  0xffffffff83d08414  [laundry: dom0]
100081                   D       umarcl  0xffffffff81e34010  [uma]
    7     0     0     0  DL      -       0xffffffff8392d510  [rand_harvestq]
    6     0     0     0  DL      pftm    0xffffffff843e1f80  [pf purge]
    5     0     0     0  DL      waiting 0xffffffff8486d700  [sctp_iterator]
    4     0     0     0  DL      (threaded)                  [cam]
100045                   D       -       0xffffffff838f7340  [doneq0]
100046                   D       -       0xffffffff838f72c0  [async]
100075                   D       -       0xffffffff838f7140  [scanner]
    3     0     0     0  DL      (threaded)                  [crypto]
100042                   D       crypto_ 0xffffffff83d03ca0  [crypto]
100043                   D       crypto_ 0xfffffe00084ff030  [crypto returns 0]
100044                   D       crypto_ 0xfffffe00084ff080  [crypto returns 1]
   13     0     0     0  DL      (threaded)                  [geom]
100037                   D       -       0xffffffff83b5d520  [g_event]
100038                   D       -       0xffffffff83b5d540  [g_up]
100039                   D       -       0xffffffff83b5d560  [g_down]
    2     0     0     0  LL      (threaded)                  [clock]
100031                   L      *tun_mtx 0xfffffe000782dc00  [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    0xfffffe0007809010  [init]
   10     0     0     0  DL      audit_w 0xffffffff83d04740  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       -       0xffffffff84c5bff0  [kernel]
100005                   D       -       0xfffffe0007771000  [softirq_0]
100006                   D       -       0xfffffe0007770b00  [softirq_1]
100007                   D       -       0xfffffe0007770a00  [if_io_tqg_0]
100008                   D       -       0xfffffe0007770900  [if_io_tqg_1]
100009                   D       -       0xfffffe0007770800  [if_config_tqg_0]
100010                   D       -       0xfffffe00077ff000  [kqueue_ctx taskq]
100011                   D       -       0xfffffe00077fee00  [jail_remove taskq]
100012                   D       -       0xfffffe00077fed00  [bus taskq]
100015                   D       -       0xfffffe00077fea00  [thread taskq]
100017                   D       -       0xfffffe00077fe800  [aiod_kick taskq]
100018                   D       -       0xfffffe00077fe700  [deferred_unmount ta]
100019                   D       -       0xfffffe00077fe600  [inm_free taskq]
100020                   D       -       0xfffffe00077fe500  [in6m_free taskq]
100021                   D       -       0xfffffe00077fe400  [linuxkpi_irq_wq]
100022                   D       -       0xfffffe00077fe300  [linuxkpi_short_wq_0]
100023                   D       -       0xfffffe00077fe300  [linuxkpi_short_wq_1]
100024                   D       -       0xfffffe00077fe300  [linuxkpi_short_wq_2]
100025                   D       -       0xfffffe00077fe300  [linuxkpi_short_wq_3]
100026                   D       -       0xfffffe00077fe200  [linuxkpi_long_wq_0]
100027                   D       -       0xfffffe00077fe200  [linuxkpi_long_wq_1]
100028                   D       -       0xfffffe00077fe200  [linuxkpi_long_wq_2]
100029                   D       -       0xfffffe00077fe200  [linuxkpi_long_wq_3]
100036                   D       -       0xfffffe00077fe100  [firmware taskq]
100040                   D       -       0xfffffe00077fe000  [crypto_0]
100041                   D       -       0xfffffe00077fe000  [crypto_1]
100056                   D       -       0xfffffe00077fdd00  [vtnet0 rxq 0]
100057                   D       -       0xfffffe00077fdc00  [vtnet0 txq 0]
100058                   D       -       0xfffffe00077fdb00  [vtnet0 rxq 1]
100059                   D       -       0xfffffe00077fda00  [vtnet0 txq 1]
100061                   D       vtbslp  0xfffffe0058073580  [virtio_balloon]
100065                   D       -       0xffffffff8283bd01  [deadlkres]
100069                   D       -       0xfffffe0059484300  [acpi_task_0]
100070                   D       -       0xfffffe0059484300  [acpi_task_1]
100071                   D       -       0xfffffe0059484300  [acpi_task_2]
100073                   D       -       0xfffffe00077ff100  [mca taskq]
100074                   D       -       0xfffffe00077fde00  [CAM taskq]
100076                   D       -       0xfffffe0059483900  [ipsec_offload]
db> show all locks
Process 821 (syz-executor) thread 0xfffffe005871d000 (100137)
exclusive lockmgr ufs (ufs) r = 0 (0xfffffe006e03ec78) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_subr.c:3395
Process 821 (syz-executor) thread 0xfffffe005870c000 (100138)
exclusive lockmgr ufs (ufs) r = 0 (0xfffffe006e03ee30) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_cache.c:4899
Process 821 (syz-executor) thread 0xfffffe00586a2000 (100140)
exclusive sx filemon (filemon) r = 0 (0xfffffe006e91e000) locked @ /syzkaller/managers/main/kernel/sys/dev/filemon/filemon.c:367
Process 818 (ifconfig) thread 0xfffffe005871d780 (100131)
exclusive sx tun_ioctl (tun_ioctl) r = 0 (0xffffffff83ce4ce0) locked @ /syzkaller/managers/main/kernel/sys/net/if_tuntap.c:1440
exclusive sx in_control (in_control) r = 0 (0xffffffff83ce7940) locked @ /syzkaller/managers/main/kernel/sys/netinet/in.c:366
Process 807 (ifconfig) thread 0xfffffe00586d1780 (100099)
exclusive sx in6_control (in6_control) r = 0 (0xffffffff83cfee80) locked @ /syzkaller/managers/main/kernel/sys/netinet6/in6.c:430
Process 805 (syz-executor) thread 0xfffffe005870d780 (100117)
exclusive sleep mutex process lock (process lock) r = 0 (0xfffffe00586d4690) locked @ /syzkaller/managers/main/kernel/sys/kern/kern_exit.c:259
Process 805 (syz-executor) thread 0xfffffe00586a3780 (100121)
exclusive sleep mutex tun_mtx (tun_mtx) r = 0 (0xfffffe006e034b18) locked @ /syzkaller/managers/main/kernel/sys/net/if_tuntap.c:1741
Process 2 (clock) thread 0xfffffe000781a780 (100031)
exclusive sleep mutex mld_mtx (mld_mtx) r = 0 (0xffffffff83cff3e0) locked @ /syzkaller/managers/main/kernel/sys/netinet6/mld6.c:1348
exclusive sleep mutex in6_multi_list_mtx (in6_multi_list_mtx) r = 0 (0xffffffff83cfefc0) locked @ /syzkaller/managers/main/kernel/sys/netinet6/mld6.c:1347
shared rw vnet_rwlock (vnet_rwlock) r = 0 (0xffffffff83ce70e0) locked @ /syzkaller/managers/main/kernel/sys/netinet6/mld6.c:1306
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            6        12804K            6
            linker          385         5207K          499
          tcp_hpts            8         4865K            8
            devbuf         4187         4324K         4212
         sysctloid        35057         2066K        35132
             vtbuf           24         1968K           46
              kobj          337         1348K          501
            newblk          426         1131K          449
          vfscache            3         1025K            3
               pcb           24          669K           52
          inodedep           70          538K           96
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          137          258K          902
         vnet_data            2          224K            2
          acpitask            1          224K            1
            KTRACE          100          200K          100
            acpica         1674          184K        56977
          filedesc           20          153K           73
              vmem            5          144K            6
           tidhash            3          141K            3
           pagedep           24          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         1015           83K         5167
               LRO           18           81K           18
          mtx_pool            3           74K            3
          syncache            1           68K            1
     NFSD srvcache            3           68K            3
            module          529           67K          529
       ddb_capture            1           64K            1
           kdtrace          195           39K          965
              umtx          288           36K          288
               shm            2           34K            3
         hostcache            1           32K            1
            DEVFS3          125           32K          135
               msg            4           30K            4
            kbdmux            6           28K            6
              temp           32           22K         1820
        DEVFS_RULE           56           20K           56
            ifaddr           66           19K           69
               BPF           14           19K           14
         ufs_mount            4           17K            5
              proc            3           17K            3
               tty           16           16K           16
          routetbl          108           16K          355
           ithread           90           15K           90
            bus-sc           34           15K         1690
      eventhandler          161           14K          161
           lltable           41           13K           41
             ifnet            7           13K            7
              kenv           95           12K           95
       ether_multi          134           11K          144
              GEOM           49           11K          431
         CAM queue            5           11K         1528
              rman           75           10K          430
               rpc            8            9K            8
            plimit           23            9K          332
              cred           23            9K          182
         bmsafemap            2            9K           63
           devstat            4            9K            4
              UART           12            9K           12
              ksem            1            8K            1
           filemon            1            8K            2
             shmfd            1            8K            2
       pfs_vncache            1            8K            1
     audit_evclass          240            8K          306
         in6_multi           55            8K           55
         taskqueue           69            8K           69
            kqueue           63            7K          831
            sglist            6            7K            6
           CAM DEV            3            6K          510
         pfs_nodes           22            6K           22
       ufs_dirhash           24            5K           24
               UMA          268            5K          268
            diradd           35            5K           60
          pf_ifnet           10            5K           19
            dirrem           17            5K           42
                vt           11            5K           11
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
             mount           36            4K          139
           pwddesc           57            4K          822
           acpisem           28            4K           28
          indirdep           12            3K           12
             selfd           47            3K         7078
            DEVFSP           46            3K           50
         proc-args           86            3K         1860
          terminal           11            3K           11
           session           22            3K           33
           acpidev           20            3K           20
             hhook            8            3K           10
           uidinfo            3            3K            6
          kcovinfo           36            3K           36
             mkdir           17            3K           40
           netlink            2            3K           67
        local_apic            1            2K            1
           io_apic            1            2K            1
         ipsec-saq            2            2K            2
             clone            8            2K            8
             lockf           18            2K           25
         newdirblk           14            2K           20
          in_multi            7            2K            9
            Unitno           30            2K           49
            ip6ndp           11            2K           12
           CAM XPT           22            2K          543
          sctp_ifa           12            2K           13
               tun            4            2K            4
         toponodes            6            2K            6
       ipsecpolicy            2            2K            2
            select           11            2K           31
               msi            9            2K            9
           softdep            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
             nhops            6            1K            8
       vnodemarker            2            1K            8
      NFSD session            1            1K            1
        CAM periph            4            1K          271
             ipsec            3            1K            3
          sctp_ifn            6            1K           13
               mld            6            1K            6
              igmp            6            1K            6
              pfil            6            1K            6
            isadev            6            1K            6
          pci_link           10            1K           10
            crypto            4            1K            4
            CC Mem            5            1K           10
 encap_export_host           12            1K           12
               osd           10            1K           27
       inpcbpolicy           16            1K          161
              cdev            2            1K            2
       lkpikmalloc            8            1K            9
      counter_rate           13            1K           13
    chacha20random            1            1K            1
            biobuf            1            1K            1
           inotify            1            1K            2
            vnodes            1            1K            1
          procdesc            2            1K            8
          ioctlops            1            1K           98
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
           CAM SIM            2            1K            2
         cryptodev            3            1K           36
           tcpfunc            3            1K            3
        loginclass            3            1K            5
            prison            6            1K            6
          nexusdev            8            1K            8
            apmdev            1            1K            1
          atkbddev            2            1K            2
           VN POLL            1            1K            1
               aio            4            1K            4
          pmchooks            1            1K            1
          CAM path            4            1K         1034
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
            soname            4            1K         3309
          filecaps            4            1K           70
          sctp_vrf            1            1K            1
          freework            1            1K           28
       ip_moptions            1            1K            1
        in_mfilter            1            1K            1
              vnet            1            1K            1
               pmc            1            1K            1
             sigio            1            1K            2
           entropy            2            1K           32
          acpiintr            1            1K            1
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          p1003.1b            1            1K            1
            mqdata            0            0K            0
            ipcomp            0            0K            0
               esp            0            0K            0
                ah            0            0K            0
        sctp_mcore            0            0K            0
        sctp_socko            0            0K            0
         sctp_iter            0            0K           11
         sctp_mvrf            0            0K            0
         sctp_timw            0            0K            0
         sctp_cpal            0            0K            0
         sctp_cmsg            0            0K            0
         sctp_stre            0            0K            0
         sctp_athi            0            0K            0
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8320    1840       18544       0     254   41615360        0
              mbuf    256    8612    1815       20336       0     254    2669312        0
          BUF TRIE    152     211   11593         418       0      62    1794208        0
        malloc-384    384    4242      48        4440       0      30    1647360        0
       malloc-4096   4096     395       3        1324       0       2    1630208        0
        malloc-128    128   12394      99       12446       0     126    1599104        0
       UMA Slabs 0    112   11673      21       11673       0     126    1309728        0
           tcp_log    416     519    2028        3010       0     254    1059552        0
      mbuf_cluster   2048     508       0         508       0     254    1040384        0
      malloc-65536  65536      13       2          82       0       1     983040        0
        RADIX NODE    152    6156     131       26391       0      62     955624        0
         vmem btag     56   16903      56       16903       0     254     949704        0
         FFS inode   1168     537      23         549       0       8     654080        0
              pbuf   2664       0     202           0       0       2     538128        0
            socket   1024      29     479        1354       0     254     520192        0
          lkpicurr    168       2    3094           2       0      62     520128        0
         VM OBJECT    248    1142     106       13331       0      62     309504        0
        256 Bucket   2048     131      15        1082       0       8     299008        0
           sctp_ep   1152       0     259           1       0     254     298368        0
         malloc-64     64    4029     318        5597       0     254     278208        0
            THREAD   1860     137       7         142       0       8     267840        0
             VNODE    440     574      29         588       0      30     265320        0
      malloc-65536  65536       4       0           4       0       1     262144        0
       malloc-2048   2048     107      13         379       0       8     245760        0
         malloc-16     16   14461     289       14532       0     254     236000        0
            DEVCTL   1024      19     201         146       0       0     225280        0
      malloc-16384  16384      10       3         225       0       1     212992        0
       malloc-2048   2048      15      89        1108       0       8     212992        0
         UMA Zones    768     240       4         240       0      16     187392        0
         malloc-32     32    5352     318        6424       0     254     181440        0
        malloc-128    128    1224     171       26653       0     126     178560        0
        malloc-256    256     624      66        1303       0      62     176640        0
            lkpimm     56       1    3095           1       0     254     173376        0
             unpcb    320      11     505        1167       0     254     165120        0
      malloc-32768  32768       3       2         123       0       1     163840        0
       FFS2 dinode    256     537      93         549       0      62     161280        0
         MAP ENTRY     96    1345     167       41504       0     126     145152        0
     FPU_save_area    832     139      23         153       0      16     134784        0
       S VFS Cache    104     996     291        1040       0     126     133848        0
      malloc-65536  65536       0       2         110       0       1     131072        0
      malloc-32768  32768       3       1          14       0       1     131072        0
       malloc-1024   1024     118      10         272       0      16     131072        0
       mbuf_packet    256       1     507         131       0     254     130048        0
          ksiginfo    112      51     993          69       0     126     116928        0
              PROC   1368      56      21         821       0       8     105336        0
      malloc-16384  16384       6       0           8       0       1      98304        0
       malloc-8192   8192      10       1          13       0       1      90112        0
          UMA Kegs    384     227       6         227       0      30      89472        0
        128 Bucket   1024      41      42         242       0      16      84992        0
         malloc-64     64     937     386        9247       0     254      84672        0
        malloc-128    128     395     256        4615       0     126      83328        0
         filedesc0   1072      57      13         822       0       8      75040        0
         malloc-64     64     563     508        1641       0     254      68544        0
             g_bio    440       4     149        4850       0      30      67320        0
      malloc-65536  65536       1       0           1       0       1      65536        0
      malloc-32768  32768       2       0           2       0       1      65536        0
       malloc-4096   4096      14       2         499       0       2      65536        0
       malloc-4096   4096      13       3          66       0       2      65536        0
         64 Bucket    512      67      61        1639       0      30      65536        0
        malloc-384    384     131      19         132       0      30      57600        0
         malloc-64     64       1     818         568       0     254      52416        0
        malloc-256    256     138      57         502       0      62      49920        0
        malloc-256    256     136      59         316       0      62      49920        0
         32 Bucket    256      58     137         665       0      62      49920        0
           DIRHASH   1024      34      14          34       0      16      49152        0
             NAMEI   1024       4      44       12624       0      16      49152        0
       malloc-8192   8192       5       1          86       0       1      49152        0
       malloc-1024   1024      15      33        1000       0      16      49152        0
       malloc-1024   1024       4      44         512       0      16      49152        0
          syncache    168       0     264           3       0     254      44352        0
       malloc-8192   8192       3       2          29       0       1      40960        0
            pcpu-8      8    4703     417        4859       0     254      40960        0
           VMSPACE    584      37      33         803       0      16      40880        0
         udp_inpcb    408       9      81         146       0      30      36720        0
         malloc-64     64      21     546       13312       0     254      36288        0
         malloc-64     64      70     497          70       0     254      36288        0
         malloc-64     64      13     554          68       0     254      36288        0
         malloc-64     64       7     560          27       0     254      36288        0
        malloc-128    128      30     249         110       0     126      35712        0
        malloc-128    128      30     249          38       0     126      35712        0
        malloc-128    128      16     263         124       0     126      35712        0
        malloc-128    128      95     184         462       0     126      35712        0
        malloc-128    128      89     190          91       0     126      35712        0
     routing nhops    256      24     111          31       0      62      34560        0
           ttyoutq    256      72      63         160       0      62      34560        0
        malloc-256    256      49      86         587       0      62      34560        0
        malloc-256    256      30     105         106       0      62      34560        0
        malloc-256    256       8     127         338       0      62      34560        0
        malloc-256    256      35     100          35       0      62      34560        0
        malloc-256    256      52      83         119       0      62      34560        0
      malloc-32768  32768       1       0           1       0       1      32768        0
       malloc-4096   4096       4       4          84       0       2      32768        0
       malloc-4096   4096       6       2           6       0       2      32768        0
       malloc-2048   2048       5      11          19       0       8      32768        0
       malloc-2048   2048       6      10           6       0       8      32768        0
       malloc-2048   2048       3      13           3       0       8      32768        0
       malloc-2048   2048       8       8          31       0       8      32768        0
       malloc-1024   1024       3      29          46       0      16      32768        0
       malloc-1024   1024      17      15          32       0      16      32768        0
       malloc-1024   1024      12      20          17       0      16      32768        0
       malloc-1024   1024       1      31           7       0      16      32768        0
        malloc-512    512      10      54          16       0      30      32768        0
        malloc-512    512      14      50          34       0      30      32768        0
        malloc-512    512       2      62          59       0      30      32768        0
        malloc-512    512       2      62          20       0      30      32768        0
        malloc-512    512       3      61           4       0      30      32768        0
           pcpu-64     64     503       9         503       0     254      32768        0
            ttyinq    160     135      65         300       0      62      32000        0
             Files     80     179     221        6790       0     126      32000        0
              PGRP    120      26     238          37       0     126      31680        0
         malloc-32     32      32     850         478       0     254      28224        0
         16 Bucket    144      51     145         259       0      62      28224        0
          4 Bucket     48       5     583           6       0     254      28224        0
            da_ccb    544       1      48        1313       0      16      26656        0
         TURNSTILE    136     145      44         145       0      62      25704        0
            cpuset    200       7     121           7       0      62      25600        0
       malloc-8192   8192       3       0           3       0       1      24576        0
       malloc-8192   8192       1       2          21       0       1      24576        0
              pipe    736      21      12         292       0      16      24288        0
    ertt_txseginfo     40       0     606         177       0     254      24240        0
               PWD     40      19     587         102       0     254      24240        0
           rtentry    168      27     117          31       0      62      24192        0
          8 Bucket     80      48     252         312       0     126      24000        0
         tcp_inpcb   1304       5      13          10       0       8      23472        0
        malloc-384    384      11      49          11       0      30      23040        0
        malloc-384    384      37      23          39       0      30      23040        0
        malloc-384    384       2      58         359       0      30      23040        0
        malloc-384    384      24      36         333       0      30      23040        0
        malloc-384    384       7      53          31       0      30      23040        0
             ripcb    376       2      58           5       0      30      22560        0
       Mountpoints   2816       2       6           2       0       4      22528        0
        SLEEPQUEUE     88     145     111         145       0     126      22528        0
            clpbuf   2664       0       8          16       0       4      21312        0
         hostcache     64       1     314           1       0     254      20160        0
              ertt     72       5     275          10       0     126      20160        0
         malloc-32     32     251     379         354       0     254      20160        0
         malloc-32     32     101     529         265       0     254      20160        0
         malloc-32     32     174     456        1053       0     254      20160        0
         malloc-32     32      42     588        2929       0     254      20160        0
         malloc-32     32      76     554          78       0     254      20160        0
         malloc-32     32      25     605          69       0     254      20160        0
          2 Bucket     32      49     581         336       0     254      20160        0
             KNOTE    160       2     123          11       0      62      20000        0
             AIOCB    552       1      34           3       0      16      19320        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           2       0       1      16384        0
       malloc-4096   4096       0       4           4       0       2      16384        0
       malloc-4096   4096       2       2         185       0       2      16384        0
       malloc-2048   2048       1       7           1       0       8      16384        0
       malloc-2048   2048       1       7           3       0       8      16384        0
       malloc-1024   1024       5      11           5       0      16      16384        0
        malloc-512    512       1      31         111       0      30      16384        0
           SMR CPU     32       8     503           8       0     254      16352        0
        sctp_laddr     48       0     336          11       0     254      16128        0
         malloc-16     16     558     442        4846       0     254      16000        0
               AIO    208       1      75           3       0      62      15808        0
              kenv    258      17      43        1067       0      30      15480        0
            mqnode    416       3      33           3       0      30      14976        0
        SMR SHARED     24       8     503           8       0     254      12264        0
         malloc-16     16      19     731         117       0     254      12000        0
         malloc-16     16      37     713       26161       0     254      12000        0
         malloc-16     16      12     738          13       0     254      12000        0
         malloc-16     16      20     730          25       0     254      12000        0
         malloc-16     16       1     749           8       0     254      12000        0
            itimer    352       1      32           1       0      30      11616        0
       L VFS Cache    320       1      35           1       0      30      11520        0
        malloc-384    384       0      30           2       0      30      11520        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-4096   4096       0       2           1       0       2       8192        0
           pcpu-16     16       8     504           8       0     254       8192        0
      vtnet_tx_hdr     24       0     334         700       0     254       8016        0
         malloc-16     16      22     478          22       0     254       8000        0
       UMA Slabs 1    176       9      13           9       0      62       3872        0
        KMAP ENTRY     96      12      27          14       0       0       3744        0
       FFS1 dinode    128       0       0           0       0     126          0        0
           ada_ccb    272       0       0           0       0      30          0        0
             swblk    136       0       0           0       0      62          0        0
          swpctrie    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 Ethernet anchors   1240       0       0           0       0      64          0        0
        pf anchors   1664       0       0           0       0      64          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
        sctp_raddr    736       0       0           0       0     254          0        0
         sctp_asoc   2256       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
            AIOLIO    272       0       0           0       0      30          0        0
        mqnotifier    216       0       0           0       0      62          0        0
            mvdata     64       0       0           0       0     254          0        0
            mqueue    248       0       0           0       0      62          0        0
        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
     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   2664       0       0           0       0      16          0        0
           nfspbuf   2664       0       0           0       0       4          0        0
            swwbuf   2664       0       0           0       0       2          0        0
            swrbuf   2664       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-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-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-512    512       0       0           0       0      30          0        0
        malloc-512    512       0       0           0       0      30          0        0
           pcpu-32     32       0       0           0       0     254          0        0
            pcpu-4      4       0       0           0       0     254          0        0
            fakepg     88       0       0           0       0     126          0        0
          UMA Hash    256       0       0           0       0      62          0        0
db> show all tcpcbs/bl

Crashes (899):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/12/16 11:18 freebsd-src 52395203f9ac a066d2bc console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/12/13 19:16 freebsd-src c42bce238abd a066d2bc console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/12/13 10:07 freebsd-src c42bce238abd a066d2bc console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/12/12 02:55 freebsd-src e3fa0a22dd37 a066d2bc console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/12/11 10:48 freebsd-src e3fa0a22dd37 48b27acc console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/12/11 06:10 freebsd-src a0347b0f3a60 48b27acc console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/12/11 02:25 freebsd-src a0347b0f3a60 48b27acc console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/12/10 13:27 freebsd-src cc1e4aae5a67 48b27acc console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/12/08 05:31 freebsd-src 3f10e5985044 cee4cb10 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/12/07 09:25 freebsd-src 3f10e5985044 cee4cb10 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/12/07 00:19 freebsd-src 6f4debc004c3 cee4cb10 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/12/06 07:53 freebsd-src ced74610217f cee4cb10 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/27 19:53 freebsd-src 39cbfc78b50c e8331348 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/27 04:34 freebsd-src 3e69618d4bfb e8331348 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/27 02:32 freebsd-src 3e69618d4bfb e8331348 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/22 03:35 freebsd-src a8740ba860bf 4fb8ef37 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/21 16:49 freebsd-src 8158b813d90f 52ed5c96 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/21 14:53 freebsd-src 8158b813d90f 52ed5c96 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/14 09:51 freebsd-src 8cd9c39195b5 07e030de console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/14 06:55 freebsd-src 8cd9c39195b5 07e030de console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/13 02:00 freebsd-src 539726e86d69 07e030de console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/10 14:25 freebsd-src 80ca573fc4e6 4e1406b4 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/09 14:23 freebsd-src 8b92a6ad597e 4e1406b4 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/08 15:59 freebsd-src 385796001c41 4e1406b4 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/07 11:43 freebsd-src 36095c942031 4e1406b4 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/06 15:07 freebsd-src 1ca7542a1b31 a6c9c731 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/05 14:38 freebsd-src b8697ac70ebf a6c9c731 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/05 05:37 freebsd-src f999ffdce381 a6c9c731 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/04 16:50 freebsd-src f999ffdce381 686bf657 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/11/03 23:47 freebsd-src 40d216183821 e6c64ba8 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/10/31 18:37 freebsd-src 0837b2ebd570 2c50b6a9 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/12/15 20:41 freebsd-src 4bf8ce037dc8 a066d2bc console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/12/08 14:24 freebsd-src 3f10e5985044 fc20f974 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/12/08 10:12 freebsd-src 3f10e5985044 cee4cb10 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/12/07 15:15 freebsd-src 3f10e5985044 cee4cb10 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/29 03:28 freebsd-src 3d91a746380e 01c07bfe console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/25 12:37 freebsd-src b87f6330013f 64219f15 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/24 04:03 freebsd-src 5cc34a83e1cc 4fb8ef37 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/22 11:18 freebsd-src a8740ba860bf 4fb8ef37 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/21 11:39 freebsd-src 8158b813d90f 52ed5c96 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/20 15:56 freebsd-src 896dc30bc9bc 2cc4c24a console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/18 18:42 freebsd-src 8012c61bef3b ef766cd7 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/16 11:31 freebsd-src 07e6bfeae5a1 f7988ea4 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/13 16:35 freebsd-src b19e61f223a1 07e030de console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/13 16:28 freebsd-src b19e61f223a1 07e030de console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/11 07:51 freebsd-src d6f10a5d013f 4e1406b4 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/10 17:54 freebsd-src 978aaa72f319 4e1406b4 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/09 01:54 freebsd-src 335fc09ab8d2 4e1406b4 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/06 21:07 freebsd-src d7a138207fa4 4e1406b4 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/03 13:14 freebsd-src 088ced14a69b 2c50b6a9 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/11/02 16:40 freebsd-src 92a533ed1d3c 2c50b6a9 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.