syzbot


panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM

Status: fixed on 2025/07/29 23:20
Reported-by: syzbot+98c39c45a437812f7683@syzkaller.appspotmail.com
Fix commit: 2bc355c0182a ufs: Pass the new parent inode number to ufs_dirrewrite()
First crash: 5d12h, last: 5d00h

Sample crash report:
panic: handle_workitem_remove: file ino 105 negative i_nlink -1
cpuid = 0
time = 1753830692
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056cd07d0
kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056cd0930
vpanic() at vpanic+0x257/frame 0xfffffe0056cd0af0
panic() at panic+0xb5/frame 0xfffffe0056cd0bb0
handle_workitem_remove() at handle_workitem_remove+0xd45/frame 0xfffffe0056cd0cf0
process_worklist_item() at process_worklist_item+0x525/frame 0xfffffe0056cd0e40
softdep_process_worklist() at softdep_process_worklist+0xfd/frame 0xfffffe0056cd0e90
softdep_flush() at softdep_flush+0x1a4/frame 0xfffffe0056cd0ef0
fork_exit() at fork_exit+0xcc/frame 0xfffffe0056cd0f30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0056cd0f30
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 14 tid 100094 ]
Stopped at      kdb_enter+0x6e: movq    $0,0x25c45c7(%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         0xffffffff827cb4c0  .str.27
rsp         0xfffffe0056cd0910
rbp         0xfffffe0056cd0930
rsi                          0
rdi         0xffffffff81614a99  printf+0x149
r8                           0
r9                  0xffffffff
r10         0x55d1499911589920
r11                       0x19
r12         0xfffffe00540c3000
r13         0xfffffffffffffffe
r14         0xffffffff827cb4c0  .str.27
r15                          0
rip         0xffffffff815fe5ce  kdb_enter+0x6e
rflags                    0x46
kdb_enter+0x6e: movq    $0,0x25c45c7(%rip)
db> show proc
Process 14 (bufdaemon) at 0xfffffe000780a5c0:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff83b4d060
 ABI: null
 flag: 0x10000284  flag2: 0
 reaper: 0xffffffff83b4d060 reapsubtree: 14
 sigparent: 20
 vmspace: 0xffffffff83b4e040
   (map 0xffffffff83b4e040)
   (map.pmap 0xffffffff83b4e0e0)
   (pmap 0xffffffff83b4e150)
 threads: 3
100079                   D       psleep  0xffffffff83cbfd60  [bufdaemon]
100080                   D       -       0xffffffff83001ec0  [bufspacedaemon-0]
100094                   Run     CPU 0                       [/ worker]
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 1066   765   765     0  R       (threaded)                  syz-executor
100391                   RunQ                                syz-executor
100480                   Run     CPU 1                       syz-executor
 1065   763   763     0  R       (threaded)                  syz-executor
100097                   RunQ                                syz-executor
100473                   S       fifoow  0xfffffe0058576ef0  syz-executor
100474                   S       uwait   0xfffffe00584ec980  syz-executor
100475                   S       uwait   0xfffffe00584eb600  syz-executor
 1064   764   764 60928  R       (threaded)                  syz-executor
100456                   RunQ                                syz-executor
100476                   S       select  0xfffffe006dfa88c0  syz-executor
100477                   S       sbwait  0xfffffe0059ae6e0c  syz-executor
100479                   S       uwait   0xfffffe005825a680  syz-executor
 1062  1059   766     0  SV      uwait   0xfffffe0058258f00  syz-executor
 1059   766   766     0  T       (threaded)                  syz-executor
100462                   s                                   syz-executor
100465                   D       ppwait  0xfffffe0054157aa0  syz-executor
 1054     1   764     0  S       uwait   0xfffffe00598f4d00  syz-executor
 1053     1   764     0  S       umtxn   0xfffffe00598f2800  syz-executor
 1048     1   766     0  S       uwait   0xfffffe00598f5380  syz-executor
 1047     1   766     0  S       uwait   0xfffffe00598f3a80  syz-executor
 1044     1   766     0  S       uwait   0xfffffe00598f4100  syz-executor
 1041     1   765     0  S       uwait   0xfffffe00584ec180  syz-executor
 1038     1   766     0  S       uwait   0xfffffe0058259780  syz-executor
 1029     1   763     0  S       uwait   0xfffffe00584ebb00  syz-executor
 1024     1   765     0  S       uwait   0xfffffe00598f2700  syz-executor
 1015     1   763     0  S       uwait   0xfffffe0058259680  syz-executor
 1008     1   764     0  S       uwait   0xfffffe00598f3380  syz-executor
 1007     1   764     0  S       uwait   0xfffffe00598f4c00  syz-executor
 1006     1   764     0  S       uwait   0xfffffe00598f3180  syz-executor
 1002     1   765     0  S       uwait   0xfffffe00598f2500  syz-executor
  998     1   764     0  S       umtxn   0xfffffe00584ec080  syz-executor
  992     0     0     0  DL      -       0xffffffff83cb3e00  [soaiod4]
  991     0     0     0  DL      -       0xffffffff83cb3e00  [soaiod3]
  990     0     0     0  DL      -       0xffffffff83cb3e00  [soaiod2]
  989     0     0     0  DL      -       0xffffffff83cb3e00  [soaiod1]
  988     1   765     0  S       uwait   0xfffffe00598f3d80  syz-executor
  979     1   766     0  S       uwait   0xfffffe005825aa80  syz-executor
  973     1   764     0  S       uwait   0xfffffe005825ac80  syz-executor
  971     1   766     0  S       uwait   0xfffffe00598f4600  syz-executor
  969     1   766     0  S       uwait   0xfffffe00598f3680  syz-executor
  965     1   766     0  S       uwait   0xfffffe00598f4900  syz-executor
  945     1   764     0  S       uwait   0xfffffe00598f4800  syz-executor
  942     1   765     0  S       uwait   0xfffffe005825a280  syz-executor
  930     1   763     0  S       uwait   0xfffffe005825a780  syz-executor
  929     1   765     0  S       uwait   0xfffffe00598f5180  syz-executor
  925     1   765     0  S       uwait   0xfffffe00598f4000  syz-executor
  920     0     0     0  DL      (threaded)                  [so_splice]
100100                   D       -       0xfffffe00598f2b00  [thr_0]
100218                   D       -       0xfffffe00598f2b40  [thr_1]
  915     1   764     0  S       uwait   0xfffffe00584eba00  syz-executor
  909     1   764     0  S       uwait   0xfffffe005825a580  syz-executor
  906     1   764     0  S       uwait   0xfffffe00598f3280  syz-executor
  902     1   766     0  S       uwait   0xfffffe00584ebf00  syz-executor
  901     1   766     0  S       uwait   0xfffffe00584eb700  syz-executor
  893   780   423     0  S       kqread  0xfffffe006de0c100  rtsol
  872     1   766     0  S       uwait   0xfffffe00584eb500  syz-executor
  867   859   763     0  S       uwait   0xfffffe00598f4700  syz-executor
  859     1   763     0  SV      uwait   0xfffffe00584eb200  syz-executor
  858     1   766     0  S       uwait   0xfffffe00584eb300  syz-executor
  826     1   763     0  S       uwait   0xfffffe005825ab80  syz-executor
  824     1   765     0  S       uwait   0xfffffe00598f2e00  syz-executor
  821     1   764     0  S       uwait   0xfffffe00598f2f00  syz-executor
  816     0     0     0  DL      (threaded)                  [KTLS]
100127                   D       -       0xfffffe0058568300  [thr_0]
100130                   D       -       0xfffffe0058568380  [thr_1]
100131                   D       -       0xffffffff83cb5628  [reclaim_0]
  809     0     0     0  DL      aiordy  0xfffffe005410eb00  [aiod4]
  808     0     0     0  DL      aiordy  0xfffffe00540a6b00  [aiod3]
  806     0     0     0  DL      aiordy  0xfffffe00540f3b00  [aiod2]
  805     0     0     0  DL      aiordy  0xfffffe00540da020  [aiod1]
  780     1   423     0  S       wait    0xfffffe00540045a0  sh
  766   762   766     0  S       nanslp  0xffffffff83ba3c40  syz-executor
  765   762   765     0  S       nanslp  0xffffffff83ba3c41  syz-executor
  764   762   764     0  S       nanslp  0xffffffff83ba3c41  syz-executor
  763   762   763     0  S       nanslp  0xffffffff83ba3c41  syz-executor
  762   760   760     0  S       select  0xfffffe006dfaa3c0  syz-executor
  760   758   760     0  Ss      sigsusp 0xfffffe00540a7670  csh
  758     1   758     0  Ss      select  0xfffffe0057d65cc0  sshd
   16     0     0     0  DL      syncer  0xffffffff83cc1820  [syncer]
   15     0     0     0  DL      vlruwt  0xfffffe000780a060  [vnlru]
   14     0     0     0  RL      (threaded)                  [bufdaemon]
100079                   D       psleep  0xffffffff83cbfd60  [bufdaemon]
100080                   D       -       0xffffffff83001ec0  [bufspacedaemon-0]
100094                   Run     CPU 0                       [/ worker]
    9     0     0     0  DL      psleep  0xffffffff83d0acc0  [vmdaemon]
    8     0     0     0  DL      (threaded)                  [pagedaemon]
100077                   D       psleep  0xffffffff83cf0d88  [dom0]
100081                   D       launds  0xffffffff83cf0d94  [laundry: dom0]
100082                   D       umarcl  0xffffffff81de0e10  [uma]
    7     0     0     0  DL      -       0xffffffff8391c5d8  [rand_harvestq]
    6     0     0     0  DL      pftm    0xffffffff847d99e0  [pf purge]
    5     0     0     0  DL      waiting 0xffffffff844d9700  [sctp_iterator]
    4     0     0     0  DL      (threaded)                  [cam]
100045                   D       -       0xffffffff838e6340  [doneq0]
100046                   D       -       0xffffffff838e62c0  [async]
100075                   D       -       0xffffffff838e6140  [scanner]
    3     0     0     0  DL      (threaded)                  [crypto]
100042                   D       crypto_ 0xffffffff83cec640  [crypto]
100043                   D       crypto_ 0xfffffe0057d43030  [crypto returns 0]
100044                   D       crypto_ 0xfffffe0057d43080  [crypto returns 1]
   13     0     0     0  DL      (threaded)                  [geom]
100037                   D       -       0xffffffff83b4c620  [g_event]
100038                   D       -       0xffffffff83b4c640  [g_up]
100039                   D       -       0xffffffff83b4c660  [g_down]
    2     0     0     0  WL      (threaded)                  [clock]
100031                   I                                   [clock (0)]
100032                   I                                   [clock (1)]
   12     0     0     0  WL      (threaded)                  [intr]
100013                   I                                   [swi6: task queue]
100014                   I                                   [swi6: Giant taskq]
100016                   I                                   [swi5: fast taskq]
100033                   I                                   [swi1: netisr 0]
100034                   I                                   [swi1: hpts]
100035                   I                                   [swi1: hpts]
100047                   I                                   [irq24: virtio_pci0]
100048                   I                                   [irq25: virtio_pci0]
100049                   I                                   [irq26: virtio_pci0]
100050                   I                                   [irq27: virtio_pci0]
100051                   I                                   [irq28: virtio_pci1]
100052                   I                                   [irq29: virtio_pci1]
100053                   I                                   [irq30: virtio_pci1]
100054                   I                                   [irq31: virtio_pci1]
100055                   I                                   [irq32: virtio_pci1]
100060                   I                                   [irq10: virtio_pci2]
100062                   I                                   [irq1: atkbd0]
100063                   I                                   [irq12: psm0]
100064                   I                                   [swi0: uart uart++]
100068                   I                                   [swi1: pf send]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffffe0007809040  [init]
   10     0     0     0  DL      audit_w 0xffffffff83ced0e0  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       parked  0xffffffff84c3dff0  [swapper]
100005                   D       -       0xfffffe0007768d00  [softirq_0]
100006                   D       -       0xfffffe0007768b00  [softirq_1]
100007                   D       -       0xfffffe0007768900  [if_io_tqg_0]
100008                   D       -       0xfffffe0007768700  [if_io_tqg_1]
100009                   D       -       0xfffffe0007768500  [if_config_tqg_0]
100010                   D       -       0xfffffe00083db100  [kqueue_ctx taskq]
100011                   D       -       0xfffffe00083db000  [jail_remove taskq]
100012                   D       -       0xfffffe00083dae00  [bus taskq]
100015                   D       -       0xfffffe00083da900  [thread taskq]
100017                   D       -       0xfffffe00083da600  [aiod_kick taskq]
100018                   D       -       0xfffffe00083da500  [deferred_unmount ta]
100019                   D       -       0xfffffe00083da400  [inm_free taskq]
100020                   D       -       0xfffffe00083da300  [in6m_free taskq]
100021                   D       -       0xfffffe00083da200  [linuxkpi_irq_wq]
100022                   D       -       0xfffffe00083da100  [linuxkpi_short_wq_0]
100023                   D       -       0xfffffe00083da100  [linuxkpi_short_wq_1]
100024                   D       -       0xfffffe00083da100  [linuxkpi_short_wq_2]
100025                   D       -       0xfffffe00083da100  [linuxkpi_short_wq_3]
100026                   D       -       0xfffffe00083da000  [linuxkpi_long_wq_0]
100027                   D       -       0xfffffe00083da000  [linuxkpi_long_wq_1]
100028                   D       -       0xfffffe00083da000  [linuxkpi_long_wq_2]
100029                   D       -       0xfffffe00083da000  [linuxkpi_long_wq_3]
100036                   D       -       0xfffffe00083d9900  [firmware taskq]
100040                   D       -       0xfffffe0057d47300  [crypto_0]
100041                   D       -       0xfffffe0057d47300  [crypto_1]
100056                   D       -       0xfffffe00083dd200  [vtnet0 rxq 0]
100057                   D       -       0xfffffe0058145500  [vtnet0 txq 0]
100058                   D       -       0xfffffe0058145400  [vtnet0 rxq 1]
100059                   D       -       0xfffffe0058145300  [vtnet0 txq 1]
100061                   D       vtbslp  0xfffffe0057d67400  [virtio_balloon]
100065                   D       -       0xffffffff827cfba1  [deadlkres]
100069                   D       -       0xfffffe0057d46e00  [acpi_task_0]
100070                   D       -       0xfffffe0057d46e00  [acpi_task_1]
100071                   D       -       0xfffffe0057d46e00  [acpi_task_2]
100073                   D       -       0xfffffe00083dca00  [mca taskq]
100074                   D       -       0xfffffe0057d46b00  [CAM taskq]
100076                   D       -       0xfffffe0057d47000  [ipsec_offload]
100379                   D       -       0xfffffe006e47f300  [netlink_socket (PID]
db> show all locks
Process 1066 (syz-executor) thread 0xfffffe0054136780 (100480)
shared sx vm map (user) (vm map (user)) r = 0 (0xfffffe00541412a8) locked @ /syzkaller/managers/main/kernel/sys/vm/vm_map.c:4998
Process 1064 (syz-executor) thread 0xfffffe0054152780 (100477)
exclusive sx so_snd_sx (so_snd_sx) r = 0 (0xfffffe0059ae7180) locked @ /syzkaller/managers/main/kernel/sys/kern/uipc_socket.c:4835
Process 14 (bufdaemon) thread 0xfffffe00540c3000 (100094)
exclusive rw SUrw (SUrw) r = 0 (0xfffffe005828d800) locked @ /syzkaller/managers/main/kernel/sys/ufs/ffs/ffs_softdep.c:10022
exclusive lockmgr ufs (ufs) r = 0 (0xfffffe00778243e0) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_subr.c:3384
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            6        12804K            6
            linker          400         5474K         1079
          tcp_hpts            7         4801K            7
            devbuf         4187         4323K         4212
         sysctloid        35221         2075K        35296
             vtbuf           24         1968K           46
              kobj          330         1320K          494
            newblk            4         1025K         1898
          vfscache            3         1025K            3
          filedesc           93          742K          439
               pcb           56          692K          193
          inodedep           14          517K          500
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          179          354K         1167
         vnet_data            2          224K            2
          acpitask            1          224K            1
            KTRACE          101          201K         4295
            acpica         1674          184K        54426
              vmem            5          144K            7
           tidhash            3          141K            3
           pagedep            8          130K          222
        tfo_ccache            1          128K            1
          IP reass            1          128K            1
             selfd         1761          111K        54624
               sem            4          106K            4
            DEVFS1          106          106K          123
        gtaskqueue           18           98K           18
               bus          997           82K         5063
          mtx_pool            3           74K            3
          syncache            1           68K            1
     NFSD srvcache            3           68K            3
            module          522           66K          522
       ddb_capture            1           64K            1
           kdtrace          248           48K         1552
              umtx          368           46K          368
               shm            2           34K            5
         hostcache            1           32K            1
            DEVFS3          125           32K          135
               msg            4           30K            4
              temp           33           29K         2400
            kbdmux            6           28K            6
        DEVFS_RULE           56           20K           56
            ifaddr           66           19K           68
         ufs_mount            4           17K            5
              proc            3           17K            3
               LRO           16           17K           16
               tty           16           16K           16
          routetbl          124           16K          395
            kqueue          101           16K         1356
           ithread           90           15K           90
            bus-sc           34           15K         1647
      eventhandler          163           14K          163
           lltable           43           14K           44
       ether_multi          157           13K          193
             ifnet            7           13K            7
              kenv           95           12K           95
              GEOM           49           11K          431
         CAM queue            5           11K         1528
              rman           82           10K          437
               rpc            8            9K            8
         in6_multi           66            9K           69
         bmsafemap            2            9K          380
           devstat            4            9K            4
              UART           12            9K           12
              ksem            1            8K            2
             shmfd            1            8K            7
       pfs_vncache            1            8K            1
     audit_evclass          240            8K          303
         taskqueue           72            8K           81
            sglist            6            7K            6
           CAM DEV            3            6K          510
         pfs_nodes           22            6K           22
           pwddesc           79            5K         1155
         sctp_atcl           13            5K           58
       ufs_dirhash           24            5K           27
               UMA          269            5K          269
          pf_ifnet           10            5K           19
                vt           11            5K           11
           memdesc            1            4K            1
               MCA           32            4K           32
            crypto           13            4K           49
              cred           16            4K          238
             evdev            4            4K            4
           acpisem           28            4K           28
            plimit            9            4K          471
         sctp_stro            3            3K            8
            DEVFSP           46            3K           74
            CC Mem           22            3K          201
          terminal           11            3K           11
           acpidev           20            3K           20
           uidinfo            4            3K           17
             hhook            8            3K           10
             clone            9            3K            9
          kcovinfo           36            3K           36
        local_apic            1            2K            1
           io_apic            1            2K            1
         ipsec-saq            2            2K            2
            ip6ndp           12            2K           14
            Unitno           30            2K           69
         proc-args           79            2K         2122
          sctp_ifa           13            2K           14
           CAM XPT           22            2K          543
             lockf           14            2K          255
          in_multi            6            2K           11
               tun            4            2K            4
         toponodes            6            2K            6
       ipsecpolicy            2            2K            2
       inpcbpolicy           44            2K          598
         sctp_timw            5            2K            5
               msi            9            2K            9
           netlink            2            2K           76
            ip6opt            6            2K           24
           softdep            1            1K            1
            dirrem            4            1K          336
            diradd            8            1K          355
            sahead            1            1K            1
          secasvar            1            1K            1
             nhops            6            1K            8
       vnodemarker            2            1K           42
      NFSD session            1            1K            1
               osd           27            1K          219
        CAM periph            4            1K          271
             ipsec            3            1K            3
          sctp_ifn            6            1K           14
               mld            6            1K            6
              igmp            6            1K            6
              pfil            6            1K            6
               BPF            6            1K           14
            isadev            6            1K            6
             mount           16            1K          572
          pci_link           10            1K           10
         cryptodev            9            1K          105
 encap_export_host           12            1K           12
         sctp_atky           16            1K           70
          freefile            4            1K          263
            select            4            1K           53
           session            4            1K           45
              cdev            2            1K            2
       lkpikmalloc            8            1K            9
      counter_rate           13            1K           13
         newdirblk            3            1K          186
             mkdir            3            1K          372
    chacha20random            1            1K            1
            biobuf            1            1K            1
           inotify            2            1K           13
              ktls            3            1K           29
            vnodes            2            1K           12
        ip_msource            4            1K           15
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
           CAM SIM            2            1K            2
            feeder            7            1K            7
         sctp_athm           13            1K           60
       ip6_msource            3            1K            6
           tcpfunc            3            1K            3
        loginclass            3            1K            5
            prison            6            1K            6
          nexusdev            8            1K            8
            apmdev            1            1K            1
          atkbddev            2            1K            2
          ktls_ocf            1            1K            6
           VN POLL            1            1K            7
               aio            4            1K            5
               iov            2            1K        14414
          pmchooks            1            1K            1
             sigio            2            1K            5
          CAM path            4            1K         1034
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
          sctp_map            6            1K           16
          sctp_vrf            1            1K            1
              vnet            1            1K            1
               pmc            1            1K            1
filedesc_to_leader            1            1K            2
           entropy            2            1K           34
          acpiintr            1            1K            1
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           fadvise            1            1K            2
           Per-cpu            1            1K            1
          freework            1            1K          441
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8324    1074       16657       0     254   38494208        0
           tcp_log    416    2628    4995       20213       0     254    3171168        0
              mbuf    256    8877     785       25180       0     254    2473472        0
          BUF TRIE    152     264   11540        1966       0      62    1794208        0
       malloc-4096   4096     409       3        1556       0       2    1687552        0
        malloc-384    384    4121      49        4469       0      30    1601280        0
        malloc-128    128   11568     150       12011       0     126    1499904        0
        RADIX NODE    152    8239     388       37098       0      62    1311304        0
       UMA Slabs 0    112   11043       3       11043       0     126    1237152        0
         sctp_asoc   2256       3     507           8       0     254    1150560        0
      mbuf_cluster   2048     508       0         508       0     254    1040384        0
         malloc-64     64    2284   13466       56217       0     254    1008000        0
         vmem btag     56   17541      66       17541       0     254     985992        0
      malloc-16384  16384      47       2         218       0       1     802816        0
         FFS inode   1168     566      29         843       0       8     694960        0
      malloc-65536  65536      10       0          13       0       1     655360        0
           sctp_ep   1152      10     501          48       0     254     588672        0
            socket   1024      65     443        1919       0     254     520192        0
          lkpicurr    168       2    3094           2       0      62     520128        0
              pbuf   2624       0     198           0       0       2     519552        0
        256 Bucket   2048     215      17        1355       0       8     475136        0
      malloc-65536  65536       4       2         116       0       1     393216        0
        sctp_raddr    736       3     514           8       0     254     380512        0
      malloc-32768  32768       4       7         410       0       1     360448        0
            THREAD   1860     168      16         480       0       8     342240        0
         VM OBJECT    248    1212     164       16254       0      62     341248        0
       malloc-2048   2048     106      54         652       0       8     327680        0
             VNODE    440     603      90         883       0      30     304920        0
         malloc-64     64    4242     357        6271       0     254     294336        0
         malloc-16     16   14543     207       14698       0     254     236000        0
            DEVCTL   1024      22     198         147       0       0     225280        0
        malloc-256    256     318     492        3376       0      62     207360        0
        malloc-128    128    1231     288       25569       0     126     194432        0
         MAP ENTRY     96    1727     289       53031       0     126     193536        0
         UMA Zones    768     241       3         241       0      16     187392        0
         malloc-32     32    5377     293        5918       0     254     181440        0
     FPU_save_area    832     170      46         648       0      16     179712        0
       FFS2 dinode    256     566     124         842       0      62     176640        0
            lkpimm     56       1    3095           1       0     254     173376        0
             unpcb    320      12     504        1233       0     254     165120        0
      malloc-32768  32768       4       1          16       0       1     163840        0
       malloc-1024   1024     124      36         868       0      16     163840        0
       S VFS Cache    104    1026     378        1374       0     126     146016        0
              PROC   1376      78      21        1070       0       8     136224        0
      malloc-65536  65536       2       0           2       0       1     131072        0
      malloc-65536  65536       2       0           2       0       1     131072        0
      malloc-65536  65536       0       2          74       0       1     131072        0
       mbuf_packet    256       0     508         817       0     254     130048        0
         tcp_inpcb   1304      22      74         201       0       8     125184        0
          ksiginfo    112      80     964         224       0     126     116928        0
        malloc-128    128     523     252        3941       0     126      99200        0
         filedesc0   1072      79      12        1155       0       8      97552        0
        malloc-256    256     218     157        1448       0      62      96000        0
    ertt_txseginfo     40       0    2323        4320       0     254      92920        0
          UMA Kegs    384     227       6         227       0      30      89472        0
             g_bio    408       0     210       12112       0      30      85680        0
        128 Bucket   1024      53      30         270       0      16      84992        0
        malloc-128    128     422     229        1258       0     126      83328        0
        sctp_chunk    152       3     517           9       0     254      79040        0
        malloc-128    128     389     138        1230       0     126      67456        0
      malloc-32768  32768       0       2         122       0       1      65536        0
      malloc-16384  16384       3       1         193       0       1      65536        0
       malloc-8192   8192       8       0           9       0       1      65536        0
       malloc-4096   4096      13       3          27       0       2      65536        0
       malloc-2048   2048      14      18         771       0       8      65536        0
         64 Bucket    512      98      30        2204       0      30      65536        0
         32 Bucket    256      81     174         804       0      62      65280        0
        malloc-384    384     120      30         127       0      30      57600        0
       malloc-8192   8192       7       0           7       0       1      57344        0
       malloc-4096   4096      10       4          57       0       2      57344        0
         malloc-64     64     666     153        2774       0     254      52416        0
       tcp_bbr_map    128       0     403         596       0     126      51584        0
     udplite_inpcb    408       2     124          81       0      30      51408        0
        malloc-256    256       0     195         864       0      62      49920        0
        malloc-256    256      79     116         673       0      62      49920        0
        malloc-256    256      28     167         797       0      62      49920        0
           DIRHASH   1024      34      14          36       0      16      49152        0
             NAMEI   1024       6      42       15950       0      16      49152        0
      malloc-16384  16384       3       0           4       0       1      49152        0
       malloc-8192   8192       4       2         111       0       1      49152        0
       malloc-2048   2048      16       8          39       0       8      49152        0
       malloc-1024   1024      28      20         311       0      16      49152        0
           VMSPACE    584      52      32        1041       0      16      49056        0
        malloc-384    384      19     101         506       0      30      46080        0
             ripcb    376      11     109         120       0      30      45120        0
          syncache    168       0     264           3       0     254      44352        0
             Files     80     211     339        8849       0     126      44000        0
       malloc-4096   4096       4       6          11       0       2      40960        0
            pcpu-8      8    4706     414        4878       0     254      40960        0
              pipe    736      19      36         352       0      16      40480        0
            ttyinq    160       0     250         555       0      62      40000        0
        sctp_readq    152       0     260           1       0     254      39520        0
         udp_inpcb    408       9      81         196       0      30      36720        0
         malloc-64     64      57     510       14356       0     254      36288        0
         malloc-64     64     160     407         202       0     254      36288        0
         malloc-64     64      13     554         784       0     254      36288        0
         malloc-64     64      14     553          33       0     254      36288        0
        malloc-128    128     153     126         706       0     126      35712        0
        malloc-128    128      62     217         520       0     126      35712        0
        malloc-128    128       3     276          10       0     126      35712        0
      ktls_session    256       1     134           8       0      62      34560        0
     routing nhops    256      26     109          35       0      62      34560        0
           ttyoutq    256       0     135         296       0      62      34560        0
        malloc-384    384      52      38          59       0      30      34560        0
        malloc-256    256      18     117          24       0      62      34560        0
        malloc-256    256      30     105          49       0      62      34560        0
        malloc-256    256      15     120         688       0      62      34560        0
         TURNSTILE    136     185      67         185       0      62      34272        0
        SLEEPQUEUE     88     185     199         185       0     126      33792        0
       malloc-8192   8192       3       1           5       0       1      32768        0
       malloc-4096   4096       5       3         563       0       2      32768        0
       malloc-4096   4096       3       5         219       0       2      32768        0
       malloc-2048   2048       2      14           2       0       8      32768        0
       malloc-2048   2048       5      11          87       0       8      32768        0
       malloc-2048   2048       9       7          12       0       8      32768        0
       malloc-1024   1024       0      32           3       0      16      32768        0
       malloc-1024   1024       9      23          22       0      16      32768        0
       malloc-1024   1024       7      25          17       0      16      32768        0
       malloc-1024   1024       9      23          15       0      16      32768        0
       malloc-1024   1024       0      32        1029       0      16      32768        0
        malloc-512    512       4      60         166       0      30      32768        0
        malloc-512    512       2      62          31       0      30      32768        0
        malloc-512    512       1      63          17       0      30      32768        0
        malloc-512    512       2      62          46       0      30      32768        0
        malloc-512    512       7      57          62       0      30      32768        0
        malloc-512    512       8      56          26       0      30      32768        0
           pcpu-64     64     501      11         501       0     254      32768        0
sctp_stream_msg_out    112       0     288           3       0     254      32256        0
              PGRP    120       8     256          51       0     126      31680        0
            clpbuf   2624       0      12          99       0       4      31488        0
        sctp_laddr     48       4     584          17       0     254      28224        0
          rl_entry     48      12     576          16       0     254      28224        0
         malloc-32     32     332     550        3344       0     254      28224        0
         16 Bucket    144      68     128         386       0      62      28224        0
          4 Bucket     48       6     582          15       0     254      28224        0
               AIO    208       2     131          33       0      62      27664        0
            da_ccb    544       0      49        3147       0      16      26656        0
            cpuset    200      10     118          60       0      62      25600        0
       malloc-4096   4096       2       4          11       0       2      24576        0
               PWD     40      44     562         241       0     254      24240        0
           rtentry    168      29     115          35       0      62      24192        0
          8 Bucket     80      63     237         449       0     126      24000        0
            itimer    352       0      66          17       0      30      23232        0
        malloc-384    384      19      41          21       0      30      23040        0
        malloc-384    384      23      37         493       0      30      23040        0
        malloc-384    384      15      45          85       0      30      23040        0
         domainset     40       0     567          47       0     254      22680        0
       Mountpoints   2816       2       6           6       0       4      22528        0
         hostcache     64       3     312           3       0     254      20160        0
              ertt     72      22     258         201       0     126      20160        0
         malloc-64     64       3     312           3       0     254      20160        0
         malloc-32     32      45     585         302       0     254      20160        0
         malloc-32     32      93     537         155       0     254      20160        0
         malloc-32     32     147     483        1444       0     254      20160        0
         malloc-32     32     173     457        2454       0     254      20160        0
         malloc-32     32      26     604        1087       0     254      20160        0
          2 Bucket     32      59     571         480       0     254      20160        0
             KNOTE    160       7     118         173       0      62      20000        0
           cryptop    280       0      70           8       0      30      19600        0
             AIOCB    552       1      34          52       0      16      19320        0
       L VFS Cache    320       1      59          27       0      30      19200        0
            AIOLIO    272       0      70           7       0      30      19040        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       1       1          21       0       1      16384        0
       malloc-4096   4096       0       4           8       0       2      16384        0
       malloc-2048   2048       4       4           4       0       8      16384        0
       malloc-2048   2048       2       6          55       0       8      16384        0
        malloc-512    512       1      31           1       0      30      16384        0
           SMR CPU     32       8     503           8       0     254      16352        0
       tcp_bbr_pcb    896       0      18           4       0      16      16128        0
         malloc-16     16     484     516        3612       0     254      16000        0
              kenv    258      17      43        1065       0      30      15480        0
      tcp_rack_pcb   1088       0      14           2       0       8      15232        0
            mqnode    416       3      33           3       0      30      14976        0
        SMR SHARED     24       8     503           8       0     254      12264        0
         malloc-32     32       7     371           7       0     254      12096        0
         malloc-16     16      53     697        1804       0     254      12000        0
         malloc-16     16      23     727         155       0     254      12000        0
         malloc-16     16      17     733        1524       0     254      12000        0
         malloc-16     16      53     697       25057       0     254      12000        0
         malloc-16     16      10     740          11       0     254      12000        0
         malloc-16     16      54     696         267       0     254      12000        0
            splice    184       0      63           1       0      62      11592        0
        malloc-384    384      29       1          40       0      30      11520        0
       malloc-8192   8192       0       1           1       0       1       8192        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-8192   8192       1       0           1       0       1       8192        0
           pcpu-16     16       8     504           8       0     254       8192        0
      vtnet_tx_hdr     24       0     334        5139       0     254       8016        0
       UMA Slabs 1    176       9      13           9       0      62       3872        0
        KMAP ENTRY     96      15      24          19       0       0       3744        0
       FFS1 dinode    128       0       0           0       0     126          0        0
           ada_ccb    272       0       0           0       0      30          0        0
             swblk    136       0       0           0       0      62          0        0
          swpctrie    152       0       0           0       0      62          0        0
   cdg_qdiffsample     16       0       0           0       0     254          0        0
   pf state scrubs     40       0       0           0       0     254          0        0
   pf frag entries     40       0       0           0       0     254          0        0
  pf fragment node     72       0       0           0       0     126          0        0
          pf frags    232       0       0           0       0      62          0        0
  pf table entries    160       0       0           0       0     254          0        0
pf table entry counters     64       0       0           0       0     254          0        0
   pf UDP mappings    104       0       0           0       0     126          0        0
   pf source nodes    152       0       0           0       0     254          0        0
     pf state keys     88       0       0           0       0     126          0        0
         pf states    384       0       0           0       0     254          0        0
           pf tags    104       0       0           0       0     126          0        0
          pf mtags    184       0       0           0       0      62          0        0
      tcp_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
   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
    IPsec SA lft_c     16       0       0           0       0     254          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
  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
        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
      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-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-1024   1024       0       0           0       0      16          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 (24):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/07/29 23:11 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 21:31 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 19:04 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 17:26 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 16:14 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 16:06 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 16:02 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 16:02 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 16:01 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 16:00 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 15:09 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 15:07 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 15:04 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 15:04 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 15:01 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 13:37 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 11:49 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 11:14 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 11:14 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 11:14 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-main panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 22:22 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-i386 panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 21:50 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-i386 panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 19:44 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-i386 panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
2025/07/29 15:33 freebsd-src 0ded4647215c 8e9d1dc1 console log report ci-freebsd-i386 panic: handle_workitem_remove: file ino NUM negative i_nlink -NUM
* Struck through repros no longer work on HEAD.