panic: Bad link elm ADDR next->prev != elm (3)

Status: closed as dup on 2021/09/07 22:53
Reported-by: syzbot+8752a350d00374f1f353@syzkaller.appspotmail.com
First crash: 2211d, last: 1789d
▶ ▼ Duplicate of
Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported
panic: Bad list head ADDR first->prev != head 2 C 3409 1789d 2686d
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
freebsd panic: Bad link elm ADDR next->prev != elm (4) 2 2 488d 510d 2/2 fixed on 2025/04/13 04:19
freebsd panic: Bad link elm ADDR next->prev != elm 2 11 2623d 2640d 0/2 auto-closed as invalid on 2019/10/25 08:44
freebsd panic: Bad link elm ADDR next->prev != elm (2) 2 1 2375d 2375d 0/2 auto-closed as invalid on 2020/04/22 16:29

Sample crash report:
panic: Bad link elm 0xfffffe009ee6ca00 next->prev != elm
cpuid = 0
time = 1629039542
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe0053b5e750
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe0053b5e8b0
vpanic() at vpanic+0x2c5/frame 0xfffffe0053b5e990
panic() at panic+0xb5/frame 0xfffffe0053b5ea60
sctp_inpcb_free() at sctp_inpcb_free+0x20ef/frame 0xfffffe0053b5eaf0
sctp_free_assoc() at sctp_free_assoc+0x421a/frame 0xfffffe0053b5ec30
sctp_process_control() at sctp_process_control+0x7b7d/frame 0xfffffe0053b5f300
sctp_common_input_processing() at sctp_common_input_processing+0xb26/frame 0xfffffe0053b5f560
sctp6_input_with_port() at sctp6_input_with_port+0x5a1/frame 0xfffffe0053b5f730
sctp6_input() at sctp6_input+0x1f/frame 0xfffffe0053b5f750
ip6_input() at ip6_input+0x2531/frame 0xfffffe0053b5f9b0
swi_net() at swi_net+0x2e5/frame 0xfffffe0053b5fa50
ithread_loop() at ithread_loop+0x4f1/frame 0xfffffe0053b5fbb0
fork_exit() at fork_exit+0xd0/frame 0xfffffe0053b5fbf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0053b5fbf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 12 tid 100034 ]
Stopped at      kdb_enter+0x6b: movq    $0,0x28ea9ca(%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         0x6e635d97e0ea7bf4
rdx         0xdffff7c000000000
rbx                          0
rsp         0xfffffe0053b5e890
rbp         0xfffffe0053b5e8b0
rsi                        0x1
rdi         0xffffffff840889c0  cov_trace_pc
r8                         0x3
r9          0xfffffe0053b5e3c8
r10                          0
r11                       0xbf
r12         0xfffffe0053e2b1e0
r13         0xfffffe0053b5e901
r14         0xffffffff82c65780  .str.18
r15         0xffffffff82c65780  .str.18
rip         0xffffffff817a096b  kdb_enter+0x6b
rflags                    0x46
kdb_enter+0x6b: movq    $0,0x28ea9ca(%rip)
db> show proc
Process 12 (intr) at 0xfffffe0053df6a70:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff8402c6c0
 ABI: null
 flag: 0x10000284  flag2: 0
 reaper: 0xffffffff8402c6c0 reapsubtree: 12
 sigparent: 20
 vmspace: 0xffffffff8402d640
   (map 0xffffffff8402d640)
   (map.pmap 0xffffffff8402d700)
   (pmap 0xffffffff8402d760)
 threads: 23
100012                   I                                   [swi6: task queue]
100013                   I                                   [swi6: Giant taskq]
100015                   I                                   [swi5: fast taskq]
100032                   I                                   [swi4: clock (0)]
100033                   I                                   [swi4: clock (1)]
100034                   Run     CPU 0                       [swi1: netisr 0]
100035                   I                                   [swi3: vm]
100036                   I                                   [swi1: hpts]
100037                   I                                   [swi1: hpts]
100050                   I                                   [irq24: virtio_pci0]
100051                   I                                   [irq25: virtio_pci0]
100052                   I                                   [irq26: virtio_pci0]
100053                   I                                   [irq27: virtio_pci0]
100054                   I                                   [irq28: virtio_pci1]
100055                   I                                   [irq29: virtio_pci1]
100056                   I                                   [irq30: virtio_pci1]
100057                   I                                   [irq31: virtio_pci1]
100058                   I                                   [irq32: virtio_pci1]
100063                   I                                   [irq10: virtio_pci2]
100065                   I                                   [irq1: atkbd0]
100066                   I                                   [irq12: psm0]
100067                   I                                   [swi0: uart uart++]
100075                   I                                   [swi1: pf send]
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 4072   794   790     0  RE      CPU 1                       syz-executor6584781
 4071   796   790     0  R       (threaded)                  syz-executor6584781
103811                   RunQ                                syz-executor6584781
104488                   S       uwait   0xfffffe009e9a4800  syz-executor6584781
104489                   S       uwait   0xfffffe009e9a4e00  syz-executor6584781
104490                   S       uwait   0xfffffe009e467d80  syz-executor6584781
  796   792   790     0  S       nanslp  0xffffffff84058201  syz-executor6584781
  795   792   790     0  R                                   syz-executor6584781
  794   792   790     0  S       nanslp  0xffffffff84058200  syz-executor6584781
  793   792   790     0  R                                   syz-executor6584781
  792   790   790     0  S       nanslp  0xffffffff84058201  syz-executor6584781
  790   788   790     0  Ss      pause   0xfffffe009e4cf5e8  csh
  788   694   788     0  Ss      select  0xfffffe009e9a4c40  sshd
  762     1   762     0  Ss+     ttyin   0xfffffe0057000cb0  getty
  761     1   761     0  Ss+     ttyin   0xfffffe00575f24b0  getty
  760     1   760     0  Ss+     ttyin   0xfffffe00575f28b0  getty
  759     1   759     0  Ss+     ttyin   0xfffffe00575f2cb0  getty
  758     1   758     0  Ss+     ttyin   0xfffffe00583b70b0  getty
  757     1   757     0  Ss+     ttyin   0xfffffe00583b74b0  getty
  756     1   756     0  Ss+     ttyin   0xfffffe00583b78b0  getty
  755     1   755     0  Ss+     ttyin   0xfffffe00583b7cb0  getty
  754     1   754     0  Ss+     ttyin   0xfffffe00574770b0  getty
  698     1   698     0  Ss      nanslp  0xffffffff84058200  cron
  694     1   694     0  Ss      select  0xfffffe009521b0c0  sshd
  507     1   507     0  Ds      bo_wwai 0xfffffe009e4586a8  syslogd
  436     1   436     0  Ss      select  0xfffffe009e396f40  devd
  435     1   435    65  Ss      select  0xfffffe009e2f01c0  dhclient
  350     1   350     0  Ss      select  0xfffffe009e2f02c0  dhclient
  347     1   347     0  Ss      select  0xfffffe009e2f0340  dhclient
   23     0     0     0  DL      syncer  0xffffffff84180380  [syncer]
   22     0     0     0  DL      vlruwt  0xfffffe0058537538  [vnlru]
   21     0     0     0  DL      (threaded)                  [bufdaemon]
100085                   D       qsleep  0xffffffff8417e1a0  [bufdaemon]
100088                   D       -       0xffffffff83411f80  [bufspacedaemon-0]
100099                   D       sdflush 0xfffffe0095280ce8  [/ worker]
   20     0     0     0  DL      psleep  0xffffffff841b65c0  [vmdaemon]
   19     0     0     0  DL      (threaded)                  [pagedaemon]
100083                   D       psleep  0xffffffff841aa0f8  [dom0]
100089                   D       launds  0xffffffff841aa104  [laundry: dom0]
100090                   D       umarcl  0xffffffff81e9c3e0  [uma]
   18     0     0     0  DL      -       0xffffffff83e0f320  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff84be2460  [sctp_iterator]
   16     0     0     0  DL      pftm    0xffffffff848fee20  [pf purge]
   15     0     0     0  DL      -       0xffffffff841794c0  [soaiod4]
    9     0     0     0  DL      -       0xffffffff841794c0  [soaiod3]
    8     0     0     0  DL      -       0xffffffff841794c0  [soaiod2]
    7     0     0     0  DL      -       0xffffffff841794c0  [soaiod1]
    6     0     0     0  DL      (threaded)                  [cam]
100048                   D       -       0xffffffff83c94ac0  [doneq0]
100049                   D       -       0xffffffff83c94a40  [async]
100082                   D       -       0xffffffff83c948c0  [scanner]
   14     0     0     0  DL      seqstat 0xfffffe0056abc888  [sequencer 00]
    5     0     0     0  DL      crypto_ 0xfffffe0053c0cc80  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffffe0053c0cc30  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff841a41a0  [crypto]
   13     0     0     0  DL      (threaded)                  [geom]
100039                   D       -       0xffffffff8402b7c0  [g_event]
100040                   D       -       0xffffffff8402b800  [g_up]
100041                   D       -       0xffffffff8402b840  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100029                   D       -       0xfffffe0053dff000  [thr_0]
100030                   D       -       0xfffffe0053dff080  [thr_1]
100031                   D       -       0xffffffff8417a748  [alloc_0]
   12     0     0     0  RL      (threaded)                  [intr]
100012                   I                                   [swi6: task queue]
100013                   I                                   [swi6: Giant taskq]
100015                   I                                   [swi5: fast taskq]
100032                   I                                   [swi4: clock (0)]
100033                   I                                   [swi4: clock (1)]
100034                   Run     CPU 0                       [swi1: netisr 0]
100035                   I                                   [swi3: vm]
100036                   I                                   [swi1: hpts]
100037                   I                                   [swi1: hpts]
100050                   I                                   [irq24: virtio_pci0]
100051                   I                                   [irq25: virtio_pci0]
100052                   I                                   [irq26: virtio_pci0]
100053                   I                                   [irq27: virtio_pci0]
100054                   I                                   [irq28: virtio_pci1]
100055                   I                                   [irq29: virtio_pci1]
100056                   I                                   [irq30: virtio_pci1]
100057                   I                                   [irq31: virtio_pci1]
100058                   I                                   [irq32: virtio_pci1]
100063                   I                                   [irq10: virtio_pci2]
100065                   I                                   [irq1: atkbd0]
100066                   I                                   [irq12: psm0]
100067                   I                                   [swi0: uart uart++]
100075                   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    0xfffffe0053d54538  [init]
   10     0     0     0  DL      audit_w 0xffffffff841a5140  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff8402c6c0  [swapper]
100005                   D       -       0xfffffe0053df0e00  [if_config_tqg_0]
100006                   D       -       0xfffffe0053df0d00  [softirq_0]
100007                   D       -       0xfffffe0053df0c00  [softirq_1]
100008                   D       -       0xfffffe0053df0b00  [if_io_tqg_0]
100009                   D       -       0xfffffe0053df0a00  [if_io_tqg_1]
100010                   D       -       0xfffffe0053c07c00  [in6m_free taskq]
100011                   D       -       0xfffffe0053c07b00  [deferred_unmount ta]
100014                   D       -       0xfffffe0053c07800  [thread taskq]
100016                   D       -       0xfffffe0053c07600  [linuxkpi_irq_wq]
100017                   D       -       0xfffffe0053c07500  [kqueue_ctx taskq]
100018                   D       -       0xfffffe0053c07400  [aiod_kick taskq]
100019                   D       -       0xfffffe0053c07300  [pci_hp taskq]
100020                   D       -       0xfffffe0053c07200  [inm_free taskq]
100021                   D       -       0xfffffe0053c07100  [linuxkpi_short_wq_0]
100022                   D       -       0xfffffe0053c07100  [linuxkpi_short_wq_1]
100023                   D       -       0xfffffe0053c07100  [linuxkpi_short_wq_2]
100024                   D       -       0xfffffe0053c07100  [linuxkpi_short_wq_3]
100025                   D       -       0xfffffe0053c07000  [linuxkpi_long_wq_0]
100026                   D       -       0xfffffe0053c07000  [linuxkpi_long_wq_1]
100027                   D       -       0xfffffe0053c07000  [linuxkpi_long_wq_2]
100028                   D       -       0xfffffe0053c07000  [linuxkpi_long_wq_3]
100038                   D       -       0xfffffe0054189e00  [firmware taskq]
100042                   D       -       0xfffffe0054189d00  [crypto_0]
100043                   D       -       0xfffffe0054189d00  [crypto_1]
100059                   D       -       0xfffffe0054189900  [vtnet0 rxq 0]
100060                   D       -       0xfffffe0054189800  [vtnet0 txq 0]
100061                   D       -       0xfffffe0054189700  [vtnet0 rxq 1]
100062                   D       -       0xfffffe0054189600  [vtnet0 txq 1]
100064                   D       vtbslp  0xfffffe0056b20a00  [virtio_balloon]
100068                   D       -       0xfffffe0054189400  [mca taskq]
100073                   D       -       0xffffffff82c6c701  [deadlkres]
100078                   D       -       0xfffffe0058344b00  [acpi_task_0]
100079                   D       -       0xfffffe0058344b00  [acpi_task_1]
100080                   D       -       0xfffffe0058344b00  [acpi_task_2]
100081                   D       -       0xfffffe0054189a00  [CAM taskq]
db> show all locks
Process 4072 (syz-executor6584781) thread 0xfffffe009e9b5020 (103596)
exclusive sleep mutex sctp-create (inp_create) r = 0 (0xfffffe009ee8b488) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3330
Process 795 (syz-executor6584781) thread 0xfffffe0095341740 (100108)
exclusive lockmgr ufs (ufs) r = 0 (0xfffffe009e473cb0) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_subr.c:3009
exclusive lockmgr ufs (ufs) r = 0 (0xfffffe009e50a070) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_cache.c:4488
Process 793 (syz-executor6584781) thread 0xfffffe009e4cac80 (100114)
exclusive rw bufobj interlock (bufobj interlock) r = 0 (0xfffffe00587727e0) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_bio.c:2873
exclusive lockmgr bufwait (bufwait) r = 0 (0xfffffe0007a52e30) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_bio.c:3937
exclusive lockmgr ufs (ufs) r = 0 (0xfffffe009e9e5070) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_subr.c:3009
exclusive lockmgr ufs (ufs) r = 0 (0xfffffe009e9a9e70) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_cache.c:4488
Process 507 (syslogd) thread 0xfffffe009533f3a0 (100100)
exclusive lockmgr ufs (ufs) r = 0 (0xfffffe009e4585b0) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_syscalls.c:3543
Process 12 (intr) thread 0xfffffe0053e2b1e0 (100034)
exclusive sleep mutex sctp-inp (inp) r = 0 (0xfffffe009ee6ce68) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3333
exclusive rw sctp-info (sctp-info) r = 0 (0xfffffe00081b37e0) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3331
exclusive sleep mutex sctp-create (inp_create) r = 0 (0xfffffe009ee6ce88) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3330
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
            devbuf         4217         4339K         4245
          tcp_hpts            6         3201K            6
         sysctloid        34385         2031K        34456
             vtbuf           24         1968K           46
              kobj          327         1308K          486
            newblk          127         1056K         4007
          vfscache            3         1025K            3
          inodedep         1284          994K         3353
               pcb           35          550K        39317
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
            dirrem         1275          319K         3301
           subproc          116          222K         4140
            acpica         1674          184K        55752
         vnet_data            1          168K            1
          freefile         1275          160K         3299
              vmem            3          146K            4
           tidhash            3          141K            3
            linker          356          140K          384
           pagedep            9          130K         3300
        tfo_ccache            1          128K            1
               sem            4          106K            4
            DEVFS1          104          104K          113
         sctp_timw          373           94K          373
               bus          989           81K         3490
          mtx_pool            2           72K            2
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          510           64K          510
              umtx          308           39K          308
           kdtrace          187           38K         8566
              temp           18           33K         1643
         hostcache            1           32K            1
               shm            1           32K            1
            DEVFS3          123           31K          133
               msg            4           30K            4
        gtaskqueue           18           26K           18
            kbdmux            6           22K            6
        DEVFS_RULE           56           20K           56
               BPF           10           18K           10
         ufs_mount            4           17K            5
              proc            3           17K            3
               tty           16           16K           16
           ithread           99           16K           99
            bus-sc           34           15K         1693
            KTRACE          100           13K          100
              kenv           95           12K           95
      eventhandler          133           12K          133
            ifaddr           30           12K           32
          routetbl           50           11K          176
         CAM queue            5           11K         1528
              GEOM           61           10K          489
              rman           84           10K          425
         bmsafemap            2            9K         3323
              UART           12            9K           12
           devstat            4            9K            4
              ksem            1            8K            1
               rpc            2            8K            2
             shmfd            1            8K         6541
       pfs_vncache            1            8K            1
         pfs_nodes           20            8K           20
     audit_evclass          237            8K          295
         taskqueue           63            7K           63
            sglist            5            7K            5
           CAM DEV            3            6K          510
              cred           22            6K          253
       ufs_dirhash           24            5K           24
               UMA          270            5K          270
                vt           11            5K           11
             ifnet            3            5K            3
           memdesc            1            4K            1
               MCA           32            4K           32
            plimit           16            4K          353
             evdev            4            4K            4
          filedesc            1            4K            1
           acpisem           28            4K           28
             hhook           15            4K           17
       ether_multi           40            4K           50
           lltable           11            4K           11
            kqueue           49            4K         4075
          pf_ifnet            5            3K            6
           pwddesc           48            3K         4073
         in6_multi           25            3K           25
          terminal           11            3K           11
           session           19            3K           33
         sctp_atcl            6            3K        29427
           uidinfo            3            3K           10
        local_apic            1            2K            1
           io_apic            1            2K            1
       fpukern_ctx            2            2K            2
         ipsec-saq            2            2K            2
             lockf           16            2K           26
            Unitno           27            2K           39
           CAM XPT           22            2K          543
         proc-args           36            2K          500
             selfd           22            2K        52288
             mkdir           10            2K         6576
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
               msi            9            2K            9
             clone            9            2K            9
           softdep            1            1K            1
            diradd            8            1K         3317
            sahead            1            1K            1
          secasvar            1            1K            1
       vnodemarker            2            1K           34
      NFSD session            1            1K            1
         newdirblk            7            1K         3288
        CAM periph            4            1K          271
            select            7            1K           29
             ipsec            3            1K            3
             nhops            6            1K            6
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           89
          pci_link           10            1K           10
          sctp_ifa            5            1K            6
            crypto            4            1K            4
            ip6ndp            4            1K            5
 encap_export_host           12            1K           12
          in_multi            2            1K            4
              pfil            4            1K            4
              cdev            2            1K            2
    chacha20random            1            1K            1
               osd            7            1K           18
       inpcbpolicy           10            1K          137
          sctp_ifn            2            1K            6
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
            DEVFSP            4            1K            9
             DEVFS            9            1K           10
          indirdep            1            1K            3
               mld            2            1K            2
              igmp            2            1K            2
            vnodes            1            1K            1
           CAM SIM            2            1K            2
              ktls            1            1K            1
            feeder            7            1K            7
         sctp_atky            6            1K        39234
           tcpfunc            3            1K            3
        loginclass            3            1K            7
            prison            6            1K            6
       lkpikmalloc            5            1K            6
        aesni_data            2            1K            2
          nexusdev            8            1K            8
            apmdev            1            1K            1
          atkbddev            2            1K            2
     CAM dev queue            2            1K            2
             xform            2            1K           49
 CAM I/O Scheduler            1            1K            1
          CAM path            4            1K         1034
          procdesc            1            1K            6
          pmchooks            1            1K            1
            soname            4            1K        16555
         sctp_athm            6            1K        32696
               tun            3            1K            3
          sctp_vrf            1            1K            1
              vnet            1            1K            1
           entropy            2            1K           40
          acpiintr            1            1K            1
               pmc            1            1K            1
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          freework            1            1K         3299
          p1003.1b            1            1K            1
          filecaps            1            1K           70
            tcp_do            0            0K            0
           tcp_fsb            0            0K            0
        sctp_mcore            0            0K            0
        sctp_socko            0            0K         6539
         sctp_iter            0            0K            4
         sctp_mvrf            0            0K            0
         sctp_cpal            0            0K            0
         sctp_cmsg            0            0K            0
         sctp_stre            0            0K            0
         sctp_athi            0            0K            0
         sctp_a_it            0            0K            4
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8320     988       16314       0     254   38125568        0
              pbuf   2624       0     989           0       0       2    2595136        0
              mbuf    256    8581     989      107685       0     254    2449920        0
        malloc-128    128   13366     212       15433       0     126    1737984        0
          BUF TRIE    144     182   11578         615       0      62    1693440        0
        malloc-384    384    4162       8        4163       0      30    1601280        0
       malloc-4096   4096     376       6        4559       0       2    1564672        0
       UMA Slabs 0    112   10164      21       10164       0     126    1140720        0
         vmem btag     56   16138      37       16138       0     254     905800        0
         FFS inode   1160     496      29        3795       0       8     609000        0
        malloc-384    384    1283     217        3353       0      30     576000        0
        RADIX NODE    144    3127     228       80420       0      62     483120        0
        malloc-256    256    1284     261       26253       0      62     395520        0
            lkpimm    168       1    2327           1       0      62     391104        0
          lkpicurr    168       2    2326           2       0      62     391104        0
        malloc-256    256     140    1150        2476       0      62     330240        0
            socket    944      22     318       20955       0     254     320960        0
           sctp_ep   1280       6     243       19620       0     254     318720        0
        256 Bucket   2048     132       8       11220       0       8     286720        0
            THREAD   1808     137      17        4492       0       8     278432        0
             VNODE    448     526      77        3827       0      30     270144        0
      malloc-65536  65536       4       0           4       0       1     262144        0
         malloc-64     64    3949     146       12029       0     254     262080        0
         VM OBJECT    264     913      77       53245       0      30     261360        0
         malloc-16     16   14021     229       14088       0     254     228000        0
            DEVCTL   1024       0     220         126       0       0     225280        0
      malloc-65536  65536       1       2         137       0       1     196608        0
         UMA Zones    768     242       2         242       0      16     187392        0
         malloc-32     32    5302     368        6355       0     254     181440        0
        malloc-256    256     535      95        7824       0      62     161280        0
        malloc-128    128    1184      56       25994       0     126     158720        0
      mbuf_cluster   2048      75       1          75       0     254     155648        0
       S VFS Cache    104     988     377        4305       0     126     141960        0
       FFS2 dinode    256     496      29        3794       0      62     134400        0
      malloc-65536  65536       0       2          54       0       1     131072        0
      malloc-65536  65536       2       0           2       0       1     131072        0
         sctp_asoc   2288       0      55        6538       0     254     125840        0
       malloc-1024   1024     114       6         124       0      16     122880        0
          ksiginfo    112      49     995          77       0     126     116928        0
         MAP ENTRY     96     851     367       93084       0     126     116928        0
       malloc-4096   4096      26       0          37       0       2     106496        0
           VMSPACE   2544      26      10        4051       0       4      91584        0
          UMA Kegs    384     227       6         227       0      30      89472        0
              PROC   1336      48      18        4072       0       8      88176        0
       malloc-8192   8192       7       3          35       0       1      81920        0
       malloc-2048   2048       9      29       19632       0       8      77824        0
         filedesc0   1072      49      21        4073       0       8      75040        0
             g_bio    408       4     166        5189       0      30      69360        0
        malloc-256    256     151     119        4508       0      62      69120        0
      malloc-65536  65536       1       0           1       0       1      65536        0
      malloc-65536  65536       1       0           1       0       1      65536        0
      malloc-32768  32768       2       0           2       0       1      65536        0
      malloc-32768  32768       0       2         130       0       1      65536        0
       malloc-2048   2048       6      26        1063       0       8      65536        0
         malloc-64     64     482     526       53186       0     254      64512        0
         64 Bucket    512      84      36        2669       0      30      61440        0
        128 Bucket   1024      44      11         728       0      16      56320        0
        malloc-384    384      64      76       29485       0      30      53760        0
      malloc-16384  16384       3       0           3       0       1      49152        0
       malloc-8192   8192       6       0           6       0       1      49152        0
        sctp_raddr    736       0      66        6538       0     254      48576        0
        malloc-128    128     329      43        3759       0     126      47616        0
         32 Bucket    256      60     120        3268       0      62      46080        0
       malloc-1024   1024       6      38        1404       0      16      45056        0
         malloc-64     64     537     156        1644       0     254      44352        0
            clpbuf   2624       0      16          25       0      16      41984        0
       malloc-8192   8192       4       1           6       0       1      40960        0
       malloc-1024   1024       2      38        6580       0      16      40960        0
        malloc-128    128      66     244        7551       0     126      39680        0
           DIRHASH   1024      34       2          34       0      16      36864        0
             NAMEI   1024       1      35       25552       0      16      36864        0
        malloc-512    512       8      64        6546       0      30      36864        0
            pcpu-8      8    4229     379        4257       0     254      36864        0
         malloc-64     64     149     418        4739       0     254      36288        0
            da_ccb    544       1      62        1423       0      16      34272        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-16384  16384       2       0          17       0       1      32768        0
      malloc-16384  16384       2       0           2       0       1      32768        0
      malloc-16384  16384       0       2         160       0       1      32768        0
           pcpu-64     64     487      25         487       0     254      32768        0
               PWD     32      15     867        3384       0     254      28224        0
             Files     80      71     279       36103       0     126      28000        0
        malloc-384    384      69       1          79       0      30      26880        0
        malloc-256    256      67      38       10323       0      62      26880        0
         TURNSTILE    136     155      34         155       0      62      25704        0
       malloc-8192   8192       2       1         103       0       1      24576        0
       malloc-1024   1024      18       6          22       0      16      24576        0
    ertt_txseginfo     40       1     605        3462       0     254      24240        0
            ttyinq    160     135      15         300       0      62      24000        0
        malloc-128    128     141      45         500       0     126      23808        0
           ttyoutq    256      72      18         160       0      62      23040        0
        malloc-256    256      61      29        4080       0      62      23040        0
       malloc-4096   4096       3       2         634       0       2      20480        0
       malloc-1024   1024      19       1          19       0      16      20480        0
         malloc-64     64     251      64       13675       0     254      20160        0
         malloc-32     32      49     581         579       0     254      20160        0
        malloc-128    128     122      33        3478       0     126      19840        0
       Mountpoints   2752       2       5           2       0       4      19264        0
       mbuf_packet    256       0      75       19710       0     254      19200        0
        malloc-256    256      46      29         431       0      62      19200        0
        SLEEPQUEUE     88     155      37         155       0     126      16896        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-4096   4096       3       1           6       0       2      16384        0
       malloc-2048   2048       7       1           7       0       8      16384        0
       malloc-2048   2048       7       1           7       0       8      16384        0
         malloc-32     32     293     211        1251       0     254      16128        0
         16 Bucket    144      46      66         326       0      62      16128        0
      vtnet_tx_hdr     24       0     668        5556       0     254      16032        0
          8 Bucket     80      44     156        1310       0     126      16000        0
        malloc-256    256      55       5         596       0      62      15360        0
             tcpcb   1080       3      11           7       0     254      15120        0
       malloc-4096   4096       1       2           3       0       2      12288        0
       malloc-4096   4096       1       2        3480       0       2      12288        0
       malloc-2048   2048       4       2          16       0       8      12288        0
         malloc-64     64      35     154       13111       0     254      12096        0
         malloc-32     32      54     324       26257       0     254      12096        0
        malloc-128    128      48      45        3366       0     126      11904        0
        sctp_chunk    152       0      78        3269       0     254      11856        0
              kenv    258      15      30        1026       0      30      11610        0
        malloc-384    384      20      10         367       0      30      11520        0
              pipe    744       6       9         289       0      16      11160        0
       malloc-4096   4096       0       2           5       0       2       8192        0
       malloc-2048   2048       0       4          40       0       8       8192        0
       malloc-2048   2048       3       1           3       0       8       8192        0
       malloc-2048   2048       1       3         192       0       8       8192        0
       malloc-1024   1024       3       5        6703       0      16       8192        0
       malloc-1024   1024       2       6          22       0      16       8192        0
        malloc-512    512       1      15         119       0      30       8192        0
        malloc-512    512       2      14          61       0      30       8192        0
           rtentry    176      13      33          17       0      62       8096        0
              PGRP     88      19      73          33       0     126       8096        0
          rl_entry     40      27     175          27       0     254       8080        0
        sctp_laddr     48       0     168           4       0     254       8064        0
          syncache    168       0      48           5       0     254       8064        0
             udpcb     32       6     246         126       0     254       8064        0
              ertt     72       3     109           7       0     126       8064        0
         malloc-64     64      30      96          47       0     254       8064        0
         malloc-64     64      11     115          74       0     254       8064        0
         malloc-32     32     128     124       13244       0     254       8064        0
         malloc-32     32      24     228          43       0     254       8064        0
         malloc-32     32      56     196        2939       0     254       8064        0
          4 Bucket     48       5     163         108       0     254       8064        0
          2 Bucket     32      49     203         532       0     254       8064        0
         malloc-16     16      18     482          50       0     254       8000        0
         malloc-16     16      51     449         258       0     254       8000        0
         malloc-16     16      57     443       32950       0     254       8000        0
         malloc-16     16     191     309        1429       0     254       8000        0
         malloc-16     16       9     491           9       0     254       8000        0
         malloc-16     16     270     230       13347       0     254       8000        0
         malloc-16     16      14     486       25355       0     254       8000        0
             ripcb    496       1      15           4       0     254       7936        0
         tcp_inpcb    496       3      13           7       0     254       7936        0
         udp_inpcb    496       6      10         126       0     254       7936        0
        malloc-128    128      29      33          79       0     126       7936        0
     routing nhops    256      10      20          17       0      62       7680        0
             unpcb    256       7      23        1181       0     254       7680        0
        malloc-384    384       8      12          10       0      30       7680        0
        malloc-384    384       1      19          20       0      30       7680        0
     FPU_save_area    832       1       8           1       0      16       7488        0
            cpuset    104       8      54           8       0     126       6448        0
 epoch_record pcpu    256       4      12           4       0      62       4096        0
       malloc-1024   1024       2       2           2       0      16       4096        0
        malloc-512    512       7       1           7       0      30       4096        0
        malloc-512    512       2       6          44       0      30       4096        0
        malloc-512    512       1       7           1       0      30       4096        0
        malloc-512    512       0       8           1       0      30       4096        0
        malloc-512    512       1       7           1       0      30       4096        0
           pcpu-16     16       7     249           7       0     254       4096        0
          sackhole     32       0     126           2       0     254       4032        0
         hostcache     64       1      62           1       0     254       4032        0
         malloc-32     32      22     104          43       0     254       4032        0
             KNOTE    160       0      25           8       0      62       4000        0
       UMA Slabs 1    176       8      14           8       0      62       3872        0
            mqnode    416       3       6           3       0      30       3744        0
        KMAP ENTRY     96      12      27          14       0       0       3744        0
              vmem   1856       1       1           1       0       8       3712        0
           SMR CPU     32       3      60           3       0     254       2016        0
        SMR SHARED     24       3      60           3       0     254       1512        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    144       0       0           0       0      62          0        0
   cdg_qdiffsample     16       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
   pf state scrubs     40       0       0           0       0     254          0        0
   pf frag entries     40       0       0           0       0     254          0        0
          pf frags    248       0       0           0       0      62          0        0
  pf table entries    160       0       0           0       0      62          0        0
pf table entry counters     64       0       0           0       0     254          0        0
   pf source nodes    136       0       0           0       0     254          0        0
     pf state keys     88       0       0           0       0     126          0        0
         pf states    312       0       0           0       0     254          0        0
           pf tags    104       0       0           0       0     126          0        0
          pf mtags     48       0       0           0       0     254          0        0
      tcp_rack_pcb    832       0       0           0       0      16          0        0
      tcp_rack_map    112       0       0           0       0     126          0        0
       tcp_bbr_pcb    832       0       0           0       0      16          0        0
       tcp_bbr_map    128       0       0           0       0     126          0        0
     udplite_inpcb    496       0       0           0       0     254          0        0
      tcp_log_node    120       0       0           0       0     126          0        0
    tcp_log_bucket    176       0       0           0       0      62          0        0
           tcp_log    416       0       0           0       0     254          0        0
          tcpreass     48       0       0           0       0     254          0        0
tfo_ccache_entries     80       0       0           0       0     126          0        0
               tfo      4       0       0           0       0     254          0        0
             tcptw     88       0       0           0       0     254          0        0
               ipq     56       0       0           0       0     254          0        0
    IPsec SA lft_c     16       0       0           0       0     254          0        0
            itimer    352       0       0           0       0      30          0        0
            AIOLIO    272       0       0           0       0      30          0        0
             AIOCB    552       0       0           0       0      16          0        0
              AIOP     32       0       0           0       0     254          0        0
               AIO    208       0       0           0       0      62          0        0
        TMPFS node    224       0       0           0       0      62          0        0
        mqnotifier    216       0       0           0       0      62          0        0
            mvdata     64       0       0           0       0     254          0        0
            mqueue    248       0       0           0       0      62          0        0
           NCLNODE    592       0       0           0       0      16          0        0
     LTS VFS Cache    360       0       0           0       0      30          0        0
       L VFS Cache    320       0       0           0       0      30          0        0
     STS VFS Cache    144       0       0           0       0      62          0        0
           cryptop    280       0       0           0       0      30          0        0
  linux_dma_object     24       0       0           0       0     254          0        0
  linux_dma_pctrie    144       0       0           0       0      62          0        0
   IOMMU_MAP_ENTRY    120       0       0           0       0     126          0        0
      ktls_session    192       0       0           0       0      62          0        0
    mbuf_jumbo_16k  16384       0       0           0       0     254          0        0
     mbuf_jumbo_9k   9216       0       0           0       0     254          0        0
      audit_record   1280       0       0           0       0       8          0        0
         domainset     40       0       0           0       0     254          0        0
        MAC labels     40       0       0           0       0     254          0        0
            vnpbuf   2624       0       0           0       0      64          0        0
            mdpbuf   2624       0       0           0       0       3          0        0
           nfspbuf   2624       0       0           0       0      16          0        0
            swwbuf   2624       0       0           0       0       8          0        0
            swrbuf   2624       0       0           0       0      16          0        0
          umtx_shm     88       0       0           0       0     126          0        0
           umtx pi     96       0       0           0       0     126          0        0
rangeset pctrie nodes    144       0       0           0       0      62          0        0
      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-8192   8192       0       0           0       0       1          0        0
       malloc-4096   4096       0       0           0       0       2          0        0
        malloc-384    384       0       0           0       0      30          0        0
           pcpu-32     32       0       0           0       0     254          0        0
            pcpu-4      4       0       0           0       0     254          0        0
            fakepg    104       0       0           0       0     126          0        0
          UMA Hash    256       0       0           0       0      62          0        0

Crashes (97):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/08/15 15:06 freebsd-src 8afe9481cfa3 2489ab88 console log report syz C ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2020/11/27 13:52 freebsd 219284e64fa7 486f93ef console log report syz ci-freebsd-main
2020/11/16 01:30 freebsd 7d967e2081cc 1bf9a662 console log report syz ci-freebsd-main
2020/11/16 01:47 freebsd 7d967e2081cc 1bf9a662 console log report syz ci-freebsd-i386
2020/07/04 20:54 freebsd fc498f7385bd 695ef2dd console log report syz ci-freebsd-i386
2021/08/31 01:54 freebsd-src d39e65b5bdc0 8f58a0ef console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/29 23:05 freebsd-src d98954e22981 be2c130d console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/27 23:00 freebsd-src b54eec836660 57b01c6e console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/27 19:20 freebsd-src b54eec836660 57b01c6e console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/26 10:11 freebsd-src 8d7cd10ba633 b599f2fc console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/25 03:24 freebsd-src 71fbc6faed62 b599f2fc console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/23 19:47 freebsd-src 5de5419b5e86 b599f2fc console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/23 15:25 freebsd-src ddce862ad859 b599f2fc console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/20 22:40 freebsd-src c4622b01d2f1 b599f2fc console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/20 14:22 freebsd-src 464a166c27bb b599f2fc console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/20 09:48 freebsd-src 464a166c27bb b599f2fc console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/20 08:15 freebsd-src a313b5240a47 b599f2fc console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/19 17:24 freebsd-src a313b5240a47 e2da378b console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/19 08:26 freebsd-src 35b253d9d238 a2fe1cb5 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/17 15:36 freebsd-src aa68b3bb2e11 a2fe1cb5 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/16 15:14 freebsd-src cc1345056b11 6652437d console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/16 11:30 freebsd-src cc1345056b11 6652437d console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/16 02:33 freebsd-src 4a77a9b64910 2489ab88 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/14 12:40 freebsd-src 288e553623d3 2489ab88 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/14 01:21 freebsd-src 57aaefdceccd 2489ab88 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/11 04:14 freebsd-src e7a13643b17c 6972b106 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/10 20:05 freebsd-src e7a13643b17c 6972b106 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/09 04:09 freebsd-src e5018628e76a 6972b106 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/07 09:16 freebsd-src c18c74a87c15 6972b106 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/02 18:31 freebsd-src 1b1bb6f17880 6c236867 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/01 12:48 freebsd-src 60fb9e10c74c 6c236867 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/07/29 22:59 freebsd-src cbf6f55e77a9 8a799410 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/07/29 18:57 freebsd-src cbf6f55e77a9 8a799410 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/07/26 13:24 freebsd-src ccc510b46340 fd511809 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/07/26 08:24 freebsd-src 0c47338023d4 fd511809 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/07/24 06:42 freebsd-src 47aeda7b7055 bc5f1d88 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/07/21 14:28 freebsd-src 8bc3dc01005e 29c3f20f console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/07/20 15:24 freebsd-src 75cb2382b84d e6a17580 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/07/19 13:37 freebsd-src db0f26439357 e6a17580 console log report ci-freebsd-main panic: Bad link elm ADDR next->prev != elm
2021/08/28 07:24 freebsd-src 08b9cc316a31 d5a29e53 console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/08/27 01:08 freebsd-src da3a09d8941d b318694d console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/08/24 07:41 freebsd-src 159258afb50a b599f2fc console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/08/18 07:55 freebsd-src 045001075ed1 a2fe1cb5 console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/08/13 16:45 freebsd-src d4da692862f1 3fd2ea69 console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/08/13 14:27 freebsd-src d4da692862f1 3fd2ea69 console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/08/09 16:03 freebsd-src 6bddade6114a 6972b106 console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/08/06 17:16 freebsd-src 362fef2f4a99 6972b106 console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/08/05 05:21 freebsd-src f3a3b0612169 7f7bb950 console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/08/03 20:20 freebsd-src 30e1773fdef4 6c236867 console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/07/30 00:04 freebsd-src cbf6f55e77a9 8a799410 console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/07/29 14:40 freebsd-src e3707726c168 b44001ce console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/07/27 12:51 freebsd-src 85ae35ef37c0 fd511809 console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/07/19 17:36 freebsd-src db0f26439357 e6a17580 console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/07/19 03:42 freebsd-src d72d5ced80f1 f115ae98 console log report ci-freebsd-i386 panic: Bad link elm ADDR next->prev != elm
2021/01/16 23:23 freebsd-src 7593c13e180f 65a7a854 console log report ci-freebsd-main
* Struck through repros no longer work on HEAD.