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: 105d, last: 7h34m

Sample crash report:
panic: sleeping thread holds tun_mtx
cpuid = 1
time = 1758266816
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056a7c9d0
kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056a7cb30
vpanic() at vpanic+0x257/frame 0xfffffe0056a7ccf0
panic() at panic+0xb5/frame 0xfffffe0056a7cdb0
propagate_priority() at propagate_priority+0x521/frame 0xfffffe0056a7ce00
turnstile_wait() at turnstile_wait+0x663/frame 0xfffffe0056a7ce70
__mtx_lock_sleep() at __mtx_lock_sleep+0x452/frame 0xfffffe0056a7cfb0
__mtx_lock_flags() at __mtx_lock_flags+0x1fe/frame 0xfffffe0056a7d0a0
tunstart_l2() at tunstart_l2+0x74/frame 0xfffffe0056a7d100
tap_transmit() at tap_transmit+0x1d0/frame 0xfffffe0056a7d150
ether_output_frame() at ether_output_frame+0x30c/frame 0xfffffe0056a7d210
ether_output() at ether_output+0x114b/frame 0xfffffe0056a7d380
ip6_output_send() at ip6_output_send+0x1b6/frame 0xfffffe0056a7d400
ip6_output() at ip6_output+0x44de/frame 0xfffffe0056a7d930
mld_dispatch_packet() at mld_dispatch_packet+0x8d1/frame 0xfffffe0056a7da90
mld_fasttimo() at mld_fasttimo+0x1900/frame 0xfffffe0056a7dcd0
softclock_call_cc() at softclock_call_cc+0x422/frame 0xfffffe0056a7de80
softclock_thread() at softclock_thread+0x200/frame 0xfffffe0056a7def0
fork_exit() at fork_exit+0xcc/frame 0xfffffe0056a7df30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0056a7df30
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 2 tid 100031 ]
Stopped at      kdb_enter+0x6e: movq    $0,0x259e587(%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         0xffffffff828074a0  .str.27
rsp         0xfffffe0056a7cb10
rbp         0xfffffe0056a7cb30
rsi                          0
rdi         0xffffffff81643eb9  printf+0x149
r8                           0
r9                  0xffffffff
r10                        0x6
r11                        0x5
r12         0xfffffe000781a780
r13         0xfffffffffffffffd
r14         0xffffffff828074a0  .str.27
r15                          0
rip         0xffffffff8162d60e  kdb_enter+0x6e
rflags                    0x46
kdb_enter+0x6e: movq    $0,0x259e587(%rip)
db> show proc
Process 2 (clock) at 0xfffffe0007808008:
 state: NORMAL
 uid: 0 gid: 0 supp gids: 0
 parent: pid 0 at 0xffffffff83b56080
 ABI: null
 flag: 0x10000284  flag2: 0
 reaper: 0xffffffff83b56080 reapsubtree: 2
 sigparent: 20
 vmspace: 0xffffffff83b57060
   (map 0xffffffff83b57060)
   (map.pmap 0xffffffff83b57100)
   (pmap 0xffffffff83b57170)
 threads: 2
100031                   L      *tun_mtx 0xfffffe000782e300  [clock (0)]
100032                   I                                   [clock (1)]
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
  829   804   764     0  S       uwait   0xfffffe0057d91600  syz-executor
  828   766   766     0  R       (threaded)                  syz-executor
100087                   RunQ                                syz-executor
100146                   D       biowr   0xfffffe0007c46b00  syz-executor
100149                   D       ufs     0xfffffe006dfdec78  syz-executor
100151                   S       uwait   0xfffffe006def1480  syz-executor
  827   804   764     0  S       uwait   0xfffffe00584ecb00  syz-executor
  826   765   765 60929  R       (threaded)                  syz-executor
100089                   Run     CPU 0                       syz-executor
100142                   RunQ                                syz-executor
100148                   D       getblk  0xfffffe0007c02948  syz-executor
100150                   D       ufs     0xfffffe006e4b7070  syz-executor
  825   763   763     0  T       (threaded)                  syz-executor
100139                   s                                   syz-executor
100140                   s                                   syz-executor
100141                   RunQ                                syz-executor
100143                   D       biowr   0xfffffe0007cf6630  syz-executor
100144                   D       ufs     0xfffffe006dfdee30  syz-executor
100147                   s                                   syz-executor
  824     0     0     0  DL      -       0xffffffff83cbce00  [soaiod4]
  823     0     0     0  DL      -       0xffffffff83cbce00  [soaiod3]
  822     0     0     0  DL      -       0xffffffff83cbce00  [soaiod2]
  821     0     0     0  DL      -       0xffffffff83cbce00  [soaiod1]
  820     0     0     0  DL      aiordy  0xfffffe00540e6560  [aiod4]
  819     0     0     0  DL      aiordy  0xfffffe00540e6ab8  [aiod3]
  818     0     0     0  DL      aiordy  0xfffffe00540e7010  [aiod2]
  817     0     0     0  DL      aiordy  0xfffffe00540e7568  [aiod1]
  816   815   423     0  L      *tun_mtx 0xfffffe000782e300  ifconfig
  815   809   423     0  S       wait    0xfffffe00540e8570  sh
  814     1   814     0  Ss      select  0xfffffe0057df6f40  dhclient
  810     1   766     0  S       uwait   0xfffffe0057d92080  syz-executor
  809   791   423     0  S       wait    0xfffffe0054004010  dhclient
  804   764   764     0  R       (threaded)                  syz-executor
100117                   RunQ                                syz-executor
100120                   D       tun_ioc 0xffffffff83ccca40  syz-executor
100129                   RunQ                                syz-executor
  791   423   423     0  S       wait    0xfffffe005410c000  sh
  766   762   766     0  S       nanslp  0xffffffff83bacc41  syz-executor
  765   762   765     0  S       nanslp  0xffffffff83bacc41  syz-executor
  764   762   764     0  R                                   syz-executor
  763   762   763     0  R                                   syz-executor
  762   760   760     0  S       select  0xfffffe0057df7640  syz-executor
  760   758   760     0  Ss      sigsusp 0xfffffe00540ce0c0  csh
  758   681   758     0  Ss      select  0xfffffe0057ddb9c0  sshd
  747     1   747     0  Ss+     ttyin   0xfffffe0058279cb0  getty
  746     1   746     0  Ss+     ttyin   0xfffffe005862f4b0  getty
  745     1   745     0  Ss+     ttyin   0xfffffe005862f8b0  getty
  744     1   744     0  Ss+     ttyin   0xfffffe0058278cb0  getty
  743     1   743     0  Ss+     ttyin   0xfffffe005862fcb0  getty
  742     1   742     0  Ss+     ttyin   0xfffffe00586300b0  getty
  741     1   741     0  Ss+     ttyin   0xfffffe00586304b0  getty
  740     1   740     0  Ss+     ttyin   0xfffffe00586308b0  getty
  739     1   739     0  Ss+     ttyin   0xfffffe0058630cb0  getty
  737     1    17     0  S+      piperd  0xfffffe006b4512e0  logger
  736   735    17     0  S+      nanslp  0xffffffff83bacc41  sleep
  735     1    17     0  S+      wait    0xfffffe0054005018  sh
  685     1   685     0  Ss      nanslp  0xffffffff83bacc40  cron
  681     1   681     0  Ss      select  0xfffffe00586137c0  sshd
  494     1   494     0  Ss      select  0xfffffe0057ddbc40  syslogd
  423     1   423     0  Ss      wait    0xfffffe00540a9ab8  devd
  422     1   422    65  Ss      select  0xfffffe0058613940  dhclient
  337     1   337     0  Ss      select  0xfffffe0057ddbec0  dhclient
  334     1   334     0  Ss      select  0xfffffe0057ddbf40  dhclient
   16     0     0     0  DL      syncer  0xffffffff83cca820  [syncer]
   15     0     0     0  RL                                  [vnlru]
   14     0     0     0  RL      (threaded)                  [bufdaemon]
100079                   RunQ                                [bufdaemon]
100082                   RunQ                                [bufspacedaemon-0]
100095                   D       sdflush 0xfffffe005862e4e8  [/ worker]
    9     0     0     0  DL      psleep  0xffffffff83d13c80  [vmdaemon]
    8     0     0     0  RL      (threaded)                  [pagedaemon]
100077                   RunQ                                [dom0]
100080                   D       launds  0xffffffff83cf9d54  [laundry: dom0]
100081                   D       umarcl  0xffffffff81e12340  [uma]
    7     0     0     0  DL      -       0xffffffff839255d8  [rand_harvestq]
    6     0     0     0  RL                                  [pf purge]
    5     0     0     0  DL      waiting 0xffffffff84541700  [sctp_iterator]
    4     0     0     0  RL      (threaded)                  [cam]
100045                   RunQ                                [doneq0]
100046                   D       -       0xffffffff838ef2c0  [async]
100075                   D       -       0xffffffff838ef140  [scanner]
    3     0     0     0  DL      (threaded)                  [crypto]
100042                   D       crypto_ 0xffffffff83cf5620  [crypto]
100043                   D       crypto_ 0xfffffe0053ee4d30  [crypto returns 0]
100044                   D       crypto_ 0xfffffe0053ee4d80  [crypto returns 1]
   13     0     0     0  DL      (threaded)                  [geom]
100037                   D       -       0xffffffff83b55640  [g_event]
100038                   D       -       0xffffffff83b55660  [g_up]
100039                   D       -       0xffffffff83b55680  [g_down]
    2     0     0     0  LL      (threaded)                  [clock]
100031                   L      *tun_mtx 0xfffffe000782e300  [clock (0)]
100032                   I                                   [clock (1)]
   12     0     0     0  RL      (threaded)                  [intr]
100013                   I                                   [swi6: task queue]
100014                   I                                   [swi6: Giant taskq]
100016                   I                                   [swi5: fast taskq]
100033                   I                                   [swi1: netisr 0]
100034                   RunQ                                [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                   RunQ                                [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 0xffffffff83cf60c0  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       parked  0xffffffff84c51ff0  [swapper]
100005                   D       -       0xfffffe0053ea0100  [softirq_0]
100006                   D       -       0xfffffe0053ea0000  [softirq_1]
100007                   D       -       0xfffffe0053e9fe00  [if_io_tqg_0]
100008                   D       -       0xfffffe0053e9fd00  [if_io_tqg_1]
100009                   D       -       0xfffffe0053e9fc00  [if_config_tqg_0]
100010                   D       -       0xfffffe000776aa00  [kqueue_ctx taskq]
100011                   D       -       0xfffffe000776a900  [jail_remove taskq]
100012                   D       -       0xfffffe000776a800  [bus taskq]
100015                   D       -       0xfffffe000776a500  [thread taskq]
100017                   D       -       0xfffffe000776a300  [aiod_kick taskq]
100018                   D       -       0xfffffe000776a200  [deferred_unmount ta]
100019                   D       -       0xfffffe000776a100  [inm_free taskq]
100020                   D       -       0xfffffe000776a000  [in6m_free taskq]
100021                   D       -       0xfffffe0007769e00  [linuxkpi_irq_wq]
100022                   D       -       0xfffffe0007769d00  [linuxkpi_short_wq_0]
100023                   D       -       0xfffffe0007769d00  [linuxkpi_short_wq_1]
100024                   D       -       0xfffffe0007769d00  [linuxkpi_short_wq_2]
100025                   D       -       0xfffffe0007769d00  [linuxkpi_short_wq_3]
100026                   D       -       0xfffffe0007769c00  [linuxkpi_long_wq_0]
100027                   D       -       0xfffffe0007769c00  [linuxkpi_long_wq_1]
100028                   D       -       0xfffffe0007769c00  [linuxkpi_long_wq_2]
100029                   D       -       0xfffffe0007769c00  [linuxkpi_long_wq_3]
100036                   D       -       0xfffffe0007769a00  [firmware taskq]
100040                   D       -       0xfffffe0007769900  [crypto_0]
100041                   D       -       0xfffffe0007769900  [crypto_1]
100056                   D       -       0xfffffe0057de6d00  [vtnet0 rxq 0]
100057                   D       -       0xfffffe0057de6c00  [vtnet0 txq 0]
100058                   D       -       0xfffffe0057de6b00  [vtnet0 rxq 1]
100059                   D       -       0xfffffe0057de6a00  [vtnet0 txq 1]
100061                   D       vtbslp  0xfffffe0057de0380  [virtio_balloon]
100065                   D       -       0xffffffff8280bb80  [deadlkres]
100069                   D       -       0xfffffe00593fd500  [acpi_task_0]
100070                   D       -       0xfffffe00593fd500  [acpi_task_1]
100071                   D       -       0xfffffe00593fd500  [acpi_task_2]
100073                   D       -       0xfffffe000776ab00  [mca taskq]
100074                   D       -       0xfffffe0007769700  [CAM taskq]
100076                   D       -       0xfffffe00593fd400  [ipsec_offload]
db> show all locks
Process 828 (syz-executor) thread 0xfffffe0054129780 (100146)
exclusive lockmgr bufwait (bufwait) r = 0 (0xfffffe0007c46b80) locked @ /syzkaller/managers/main/kernel/sys/ufs/ffs/ffs_softdep.c:14492
exclusive lockmgr bufwait (bufwait) r = 0 (0xfffffe0007c02948) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_bio.c:4022
exclusive lockmgr ufs (ufs) r = 0 (0xfffffe006dfdec78) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_vnops.c:1711
Process 828 (syz-executor) thread 0xfffffe0054125000 (100149)
shared lockmgr ufs (ufs) r = 0 (0xfffffe006df34908) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_cache.c:5257
Process 826 (syz-executor) thread 0xfffffe0054125780 (100148)
exclusive lockmgr ufs (ufs) r = 0 (0xfffffe006e4b7070) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_syscalls.c:3595
Process 826 (syz-executor) thread 0xfffffe0054124780 (100150)
shared lockmgr ufs (ufs) r = 0 (0xfffffe006e4b7228) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_lookup.c:1169
Process 825 (syz-executor) thread 0xfffffe005411d780 (100141)
exclusive sx so_snd_sx (so_snd_sx) r = 0 (0xfffffe006b4e8980) locked @ /syzkaller/managers/main/kernel/sys/kern/uipc_socket.c:4835
Process 825 (syz-executor) thread 0xfffffe0054120000 (100143)
exclusive lockmgr bufwait (bufwait) r = 0 (0xfffffe0007cf66b0) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_bio.c:1752
exclusive lockmgr ufs (ufs) r = 0 (0xfffffe006dfdee30) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_vnops.c:1243
Process 825 (syz-executor) thread 0xfffffe005412a780 (100144)
shared lockmgr ufs (ufs) r = 0 (0xfffffe006e4b73e0) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_cache.c:5257
Process 816 (ifconfig) thread 0xfffffe00540fd000 (100124)
exclusive sx tun_ioctl (tun_ioctl) r = 0 (0xffffffff83ccca40) locked @ /syzkaller/managers/main/kernel/sys/net/if_tuntap.c:1387
exclusive sx in_control (in_control) r = 0 (0xffffffff83ccf660) locked @ /syzkaller/managers/main/kernel/sys/netinet/in.c:367
Process 804 (syz-executor) thread 0xfffffe00540a0000 (100120)
exclusive sleep mutex tun_mtx (tun_mtx) r = 0 (0xfffffe0058125808) locked @ /syzkaller/managers/main/kernel/sys/net/if_tuntap.c:1688
Process 2 (clock) thread 0xfffffe000781a780 (100031)
exclusive sleep mutex mld_mtx (mld_mtx) r = 0 (0xffffffff83cf0d60) locked @ /syzkaller/managers/main/kernel/sys/netinet6/mld6.c:1349
exclusive sleep mutex in6_multi_list_mtx (in6_multi_list_mtx) r = 0 (0xffffffff83cf0b80) locked @ /syzkaller/managers/main/kernel/sys/netinet6/mld6.c:1348
shared rw vnet_rwlock (vnet_rwlock) r = 0 (0xffffffff83ccede0) locked @ /syzkaller/managers/main/kernel/sys/netinet6/mld6.c:1307
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            6        12804K            6
            linker          384         5188K          498
          tcp_hpts            7         4801K            7
            devbuf         4187         4324K         4212
         sysctloid        35125         2069K        35200
             vtbuf           24         1968K           46
              kobj          331         1324K          495
            newblk          423         1130K          457
          vfscache            3         1025K            3
               pcb           28          673K           64
          inodedep           70          538K          100
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          130          278K          897
         vnet_data            2          224K            2
          acpitask            1          224K            1
            KTRACE          100          200K          100
          filedesc           24          185K           81
            acpica         1674          184K        54444
              vmem            5          144K            6
           tidhash            3          141K            3
           pagedep           23          134K           29
        tfo_ccache            1          128K            1
          IP reass            1          128K            1
               sem            4          106K            4
            DEVFS1          106          106K          123
        gtaskqueue           18           98K           18
               bus         1000           82K         5086
          mtx_pool            3           74K            3
          syncache            1           68K            1
     NFSD srvcache            3           68K            3
            module          523           66K          523
       ddb_capture            1           64K            1
           kdtrace          208           41K          983
              umtx          320           40K          320
         hostcache            1           32K            1
               shm            1           32K            2
            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           15
         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         1657
      eventhandler          163           14K          163
           lltable           43           14K           43
             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
              cred           25           10K          184
               rpc            8            9K            8
         bmsafemap            4            9K           68
            plimit           23            9K          332
         in6_multi           65            9K           65
           devstat            4            9K            4
              UART           12            9K           12
              ksem            1            8K            2
             shmfd            1            8K            1
       pfs_vncache            1            8K            1
     audit_evclass          240            8K          306
         taskqueue           69            8K           69
            sglist            6            7K            6
           CAM DEV            3            6K          510
         pfs_nodes           22            6K           22
       ufs_dirhash           24            5K           24
            dirrem           18            5K           44
               UMA          268            5K          268
            diradd           35            5K           62
          pf_ifnet           10            5K           19
            kqueue           65            5K          837
                vt           11            5K           11
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
           pwddesc           63            4K          832
             mount           36            4K          114
           acpisem           28            4K           28
             selfd           45            3K         7130
         proc-args           87            3K         1868
          terminal           11            3K           11
            DEVFSP           44            3K           49
           session           21            3K           32
          indirdep           10            3K           10
           acpidev           20            3K           20
           uidinfo            4            3K            8
             hhook            8            3K           10
             clone            9            3K            9
          kcovinfo           36            3K           36
             lockf           21            3K           28
             mkdir           17            3K           38
           netlink            2            3K           70
          filecaps            5            3K           71
        local_apic            1            2K            1
           io_apic            1            2K            1
         ipsec-saq            2            2K            2
            ip6ndp           12            2K           13
            Unitno           32            2K          195
          sctp_ifa           13            2K           14
         newdirblk           13            2K           19
           CAM XPT           22            2K          543
          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
            CC Mem            9            2K           14
           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
          sctp_ifn            6            1K           14
         sctp_atcl            2            1K            6
             ipsec            3            1K            3
               mld            6            1K            6
              igmp            6            1K            6
              pfil            6            1K            6
            isadev            6            1K            6
          pci_link           10            1K           10
               osd           14            1K           31
       inpcbpolicy           21            1K          168
            crypto            4            1K            4
 encap_export_host           12            1K           12
              cdev            2            1K            2
       lkpikmalloc            8            1K            9
      counter_rate           13            1K           13
    chacha20random            1            1K            1
            biobuf            1            1K            1
            ip6opt            2            1K            5
             frag6            3            1K            3
            vnodes            1            1K            2
          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
         cryptodev            2            1K           36
          nexusdev            8            1K            8
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8328    1070       13855       0     254   38494208        0
              mbuf    256    8623    1039       18088       0     254    2473472        0
          BUF TRIE    152     209   11595         433       0      62    1794208        0
        malloc-384    384    4140      30        4152       0      30    1601280        0
        malloc-128    128   11546     172       11557       0     126    1499904        0
       malloc-4096   4096     334       2         577       0       2    1376256        0
           tcp_log    416     589    2714        3599       0     254    1374048        0
       UMA Slabs 0    112   10905      33       10905       0     126    1225056        0
      mbuf_cluster   2048     508       0         508       0     254    1040384        0
        RADIX NODE    152    6370      99       26496       0      62     983288        0
      malloc-65536  65536      14       0          17       0       1     917504        0
         vmem btag     56   16117      50       16117       0     254     905352        0
         FFS inode   1168     537      23         554       0       8     654080        0
            socket   1024      39     469        1370       0     254     520192        0
          lkpicurr    168       2    3094           2       0      62     520128        0
              pbuf   2624       0     198           0       0       2     519552        0
         VM OBJECT    248    1162      86       13387       0      62     309504        0
           sctp_ep   1152       2     257           6       0     254     298368        0
            THREAD   1860     144      16         152       0       8     297600        0
       malloc-4096   4096      69       1         836       0       2     286720        0
             VNODE    440     573      30         592       0      30     265320        0
        256 Bucket   2048     127       1        1002       0       8     262144        0
         malloc-64     64    3855     240        3862       0     254     262080        0
       malloc-2048   2048     109      11         354       0       8     245760        0
         malloc-16     16   14471     279       14539       0     254     236000        0
            DEVCTL   1024      20     200         147       0       0     225280        0
      malloc-16384  16384      11       1          38       0       1     196608        0
         UMA Zones    768     240       4         240       0      16     187392        0
         malloc-32     32    5325     345        5369       0     254     181440        0
        malloc-128    128    1225     170       25569       0     126     178560        0
            lkpimm     56       1    3095           1       0     254     173376        0
             unpcb    320      15     501        1171       0     254     165120        0
       FFS2 dinode    256     537      93         553       0      62     161280        0
     FPU_save_area    832     145      35         162       0      16     149760        0
       malloc-2048   2048       6      66        1039       0       8     147456        0
        malloc-256    256     486      84         643       0      62     145920        0
         MAP ENTRY     96    1394     118       41681       0     126     145152        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-65536  65536       1       1           9       0       1     131072        0
      malloc-32768  32768       2       2          13       0       1     131072        0
       malloc-1024   1024     117      11         302       0      16     131072        0
       mbuf_packet    256       1     507         133       0     254     130048        0
       S VFS Cache    104     998     172        1045       0     126     121680        0
          ksiginfo    112      54     990          72       0     126     116928        0
        malloc-128    128     727     172        3978       0     126     115072        0
        malloc-128    128     653     122        1267       0     126      99200        0
      malloc-32768  32768       3       0           3       0       1      98304        0
              PROC   1368      62       4         829       0       8      90288        0
       malloc-8192   8192       9       2          92       0       1      90112        0
         filedesc0   1072      63      21         832       0       8      90048        0
          UMA Kegs    384     227       6         227       0      30      89472        0
             g_bio    408      12     198        4902       0      30      85680        0
      malloc-16384  16384       5       0           7       0       1      81920        0
       malloc-4096   4096      15       3         211       0       2      73728        0
        128 Bucket   1024      41      26         230       0      16      68608        0
         malloc-64     64     813     258        2361       0     254      68544        0
         malloc-64     64     648     423        8784       0     254      68544        0
      malloc-32768  32768       0       2         120       0       1      65536        0
      malloc-32768  32768       2       0           2       0       1      65536        0
       malloc-8192   8192       8       0           9       0       1      65536        0
       malloc-1024   1024      26      38         557       0      16      65536        0
        malloc-256    256     171      84         850       0      62      65280        0
        malloc-256    256     151     104         542       0      62      65280        0
        malloc-256    256     190      65         251       0      62      65280        0
        malloc-384    384     111      39         473       0      30      57600        0
       malloc-4096   4096      12       2         495       0       2      57344        0
        malloc-256    256      47     148         213       0      62      49920        0
         32 Bucket    256      60     135         842       0      62      49920        0
           DIRHASH   1024      34      14          34       0      16      49152        0
             NAMEI   1024       3      45       12665       0      16      49152        0
      malloc-16384  16384       1       2         191       0       1      49152        0
       malloc-2048   2048      10      14          28       0       8      49152        0
         64 Bucket    512      64      32        1691       0      30      49152        0
          syncache    168       0     264           3       0     254      44352        0
            pcpu-8      8    4709     411        4872       0     254      40960        0
              pipe    736      21      34         291       0      16      40480        0
            da_ccb    544       3      67        1323       0      16      38080        0
         udp_inpcb    408      10      80         147       0      30      36720        0
         malloc-64     64      26     541       13547       0     254      36288        0
         malloc-64     64      33     534          53       0     254      36288        0
         malloc-64     64     220     347        1014       0     254      36288        0
         malloc-64     64      72     495         913       0     254      36288        0
        malloc-128    128      19     260         162       0     126      35712        0
        malloc-128    128       6     273          28       0     126      35712        0
        malloc-128    128     121     158         588       0     126      35712        0
        malloc-128    128      28     251         288       0     126      35712        0
     routing nhops    256      26     109          33       0      62      34560        0
           ttyoutq    256      72      63         160       0      62      34560        0
        malloc-384    384      72      18          75       0      30      34560        0
        malloc-384    384      73      17          73       0      30      34560        0
        malloc-256    256      27     108         501       0      62      34560        0
        malloc-256    256       3     132          57       0      62      34560        0
        malloc-256    256      17     118         281       0      62      34560        0
         TURNSTILE    136     161      91         161       0      62      34272        0
        SLEEPQUEUE     88     161     223         161       0     126      33792        0
       malloc-2048   2048       3      13           3       0       8      32768        0
       malloc-2048   2048       3      13          48       0       8      32768        0
       malloc-2048   2048       9       7          32       0       8      32768        0
       malloc-2048   2048       8       8           8       0       8      32768        0
       malloc-1024   1024       3      29          43       0      16      32768        0
       malloc-1024   1024      17      15         999       0      16      32768        0
       malloc-1024   1024       2      30           6       0      16      32768        0
       malloc-1024   1024       3      29           8       0      16      32768        0
       malloc-1024   1024       2      30           2       0      16      32768        0
        malloc-512    512       0      64         110       0      30      32768        0
        malloc-512    512       0      64          14       0      30      32768        0
        malloc-512    512       2      62          49       0      30      32768        0
        malloc-512    512      10      54          30       0      30      32768        0
        malloc-512    512       2      62           8       0      30      32768        0
           pcpu-64     64     501      11         501       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          20       0       4      31488        0
         tcp_inpcb   1304       9      15          14       0       8      31296        0
           VMSPACE    584      39      10         807       0      16      28616        0
        sctp_laddr     48       0     588          12       0     254      28224        0
         malloc-32     32     354     528        4190       0     254      28224        0
         16 Bucket    144      49     147         243       0      62      28224        0
          4 Bucket     48       6     582           8       0     254      28224        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          43       0       2      24576        0
    ertt_txseginfo     40       0     606         184       0     254      24240        0
               PWD     40      20     586         103       0     254      24240        0
           rtentry    168      29     115          33       0      62      24192        0
             Files     80     183     117        6828       0     126      24000        0
          8 Bucket     80      45     255         264       0     126      24000        0
        malloc-384    384       1      59           2       0      30      23040        0
        malloc-384    384      12      48          12       0      30      23040        0
        malloc-384    384      29      31         537       0      30      23040        0
             ripcb    376       2      58           7       0      30      22560        0
       Mountpoints   2816       2       6           2       0       4      22528        0
         hostcache     64       1     314           1       0     254      20160        0
              ertt     72       9     271          14       0     126      20160        0
         malloc-64     64       3     312           3       0     254      20160        0
         malloc-32     32      64     566         352       0     254      20160        0
         malloc-32     32      22     608         254       0     254      20160        0
         malloc-32     32     158     472        1396       0     254      20160        0
         malloc-32     32      60     570          87       0     254      20160        0
         malloc-32     32     125     505         133       0     254      20160        0
         malloc-32     32      16     614          20       0     254      20160        0
          2 Bucket     32      52     578         332       0     254      20160        0
             KNOTE    160       0     125           7       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-16384  16384       1       0           1       0       1      16384        0
       malloc-8192   8192       0       2          26       0       1      16384        0
       malloc-8192   8192       0       2          20       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-4096   4096       1       3           6       0       2      16384        0
       malloc-2048   2048       0       8          12       0       8      16384        0
       malloc-1024   1024       0      16           1       0      16      16384        0
        malloc-512    512       2      30           2       0      30      16384        0
        malloc-512    512      12      20          17       0      30      16384        0
        malloc-512    512       3      29           5       0      30      16384        0
           SMR CPU     32       8     503           8       0     254      16352        0
         malloc-16     16     517     483        3405       0     254      16000        0
               AIO    208       0      76           1       0      62      15808        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-16     16      44     706        1382       0     254      12000        0
         malloc-16     16      41     709          94       0     254      12000        0
         malloc-16     16      48     702       25025       0     254      12000        0
         malloc-16     16      15     735          16       0     254      12000        0
         malloc-16     16      10     740          16       0     254      12000        0
             AIOCB    552       0      21           1       0      16      11592        0
       L VFS Cache    320       0      36           1       0      30      11520        0
        malloc-384    384       1      29           2       0      30      11520        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-4096   4096       0       2           4       0       2       8192        0
           pcpu-16     16       8     504           8       0     254       8192        0
      vtnet_tx_hdr     24       0     334        1157       0     254       8016        0
         malloc-16     16       9     491          14       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
            itimer    352       0       0           0       0      30          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   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-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-8192   8192       0       0           0       0       1          0        0
       malloc-4096   4096       0       0           0       0       2          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 (662):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/09/19 07:27 freebsd-src d5984d5f29a7 e2beed91 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/09/19 06:06 freebsd-src d5984d5f29a7 e2beed91 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/09/18 07:43 freebsd-src 7c0bc6c703ee e2beed91 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/09/14 13:45 freebsd-src bd7032e0b058 e2beed91 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/09/14 01:07 freebsd-src 8a4e4c95244b e2beed91 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/09/13 08:10 freebsd-src d4282cfa97d6 e2beed91 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/09/11 20:01 freebsd-src 70afc95fc6ec e2beed91 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/09/11 12:51 freebsd-src 70afc95fc6ec e2beed91 console log report ci-freebsd-main panic: sleeping thread holds tun_mtx
2025/09/19 04:55 freebsd-src a37825313f62 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/18 18:37 freebsd-src 7c0bc6c703ee e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/18 17:33 freebsd-src 7c0bc6c703ee e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/18 11:20 freebsd-src 7c0bc6c703ee e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/18 05:19 freebsd-src 2b0f8c6907b9 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/18 02:12 freebsd-src 2b0f8c6907b9 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/18 01:08 freebsd-src 2b0f8c6907b9 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/17 21:58 freebsd-src 2b0f8c6907b9 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/17 10:55 freebsd-src dea1dd669054 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/17 07:21 freebsd-src dea1dd669054 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/17 03:35 freebsd-src dea1dd669054 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/16 23:45 freebsd-src 99213b3c352c e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/16 11:10 freebsd-src 969be39fb3ca e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/15 07:33 freebsd-src 52096ba6b769 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/15 05:15 freebsd-src 52096ba6b769 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/14 23:23 freebsd-src 52096ba6b769 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/14 18:50 freebsd-src bd7032e0b058 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/14 16:57 freebsd-src bd7032e0b058 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/14 14:59 freebsd-src bd7032e0b058 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/14 09:29 freebsd-src bd7032e0b058 e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/14 05:04 freebsd-src cbba9f7eeead e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/13 17:29 freebsd-src cbba9f7eeead e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/13 16:23 freebsd-src c806defe8fee e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/13 14:57 freebsd-src c806defe8fee e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/13 13:21 freebsd-src c806defe8fee e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/13 10:30 freebsd-src c806defe8fee e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/13 03:27 freebsd-src c806defe8fee e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/13 01:20 freebsd-src dbcaac13e49c e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/12 17:52 freebsd-src dbcaac13e49c e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/12 15:19 freebsd-src dbcaac13e49c e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/12 10:02 freebsd-src d869395ac4bd e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/12 06:46 freebsd-src d869395ac4bd e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/12 03:04 freebsd-src d869395ac4bd e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/12 01:26 freebsd-src d869395ac4bd e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/11 18:56 freebsd-src 70afc95fc6ec e2beed91 console log report ci-freebsd-i386 panic: sleeping thread holds tun_mtx
2025/09/11 14:51 freebsd-src 70afc95fc6ec e2beed91 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.