syzbot


Fatal trap 12: page fault in sctp_free_assoc

Status: auto-closed as invalid on 2021/06/30 08:45
Reported-by: syzbot+bc7116c82246c98af007@syzkaller.appspotmail.com
First crash: 843d, last: 788d

Sample crash report:
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address	= 0xfffffe019a557b10
fault code		= supervisor read data, page not present
instruction pointer	= 0x20:0xffffffff82bc4475
stack pointer	        = 0x28:0xfffffe00037ab8c0
frame pointer	        = 0x28:0xfffffe00037ab940
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 12 (swi4: clock (0))
trap number		= 12
panic: page fault
cpuid = 0
time = 1612520401
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe00037ab520
vpanic() at vpanic+0x1c7/frame 0xfffffe00037ab580
panic() at panic+0x43/frame 0xfffffe00037ab5e0
trap_fatal() at trap_fatal+0x4cd/frame 0xfffffe00037ab660
trap_pfault() at trap_pfault+0xd4/frame 0xfffffe00037ab6d0
trap() at trap+0x41d/frame 0xfffffe00037ab7f0
calltrap() at calltrap+0x8/frame 0xfffffe00037ab7f0
--- trap 0xc, rip = 0xffffffff82bc4475, rsp = 0xfffffe00037ab8c0, rbp = 0xfffffe00037ab940 ---
sctp_free_assoc() at sctp_free_assoc+0xcc5/frame 0xfffffe00037ab940
sctp_timeout_handler() at sctp_timeout_handler+0x121f/frame 0xfffffe00037aba00
softclock_call_cc() at softclock_call_cc+0x1f7/frame 0xfffffe00037abad0
softclock() at softclock+0xb0/frame 0xfffffe00037abb10
ithread_loop() at ithread_loop+0x33f/frame 0xfffffe00037abbb0
fork_exit() at fork_exit+0xb3/frame 0xfffffe00037abbf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00037abbf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 12 tid 100022 ]
Stopped at      kdb_enter+0x67: movq    $0,0x1450bae(%rip)
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         0xffffffff81117ec0  vprintf+0x140
rdx                        0x1
rbx                          0
rsp         0xfffffe00037ab500
rbp         0xfffffe00037ab520
rsi                          0
rdi         0xffffffff81117ef6  vprintf+0x176
r8                           0
r9                  0xffffffff
r10                          0
r11                     0xc9f8  ll+0xc9d7
r12         0xffffffff82067650  ddb_dbbe
r13                          0
r14         0xffffffff819c1363
r15         0xffffffff819c1363
rip         0xffffffff8110eed7  kdb_enter+0x67
rflags                    0x86
kdb_enter+0x67: movq    $0,0x1450bae(%rip)
db> show proc
Process 12 (intr) at 0xfffff80004469a50:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff82512fb0
 ABI: null
 flag: 0x10000284  flag2: 0
 reaper: 0xffffffff82512fb0 reapsubtree: 12
 sigparent: 20
 vmspace: 0xffffffff82513c00
   (map 0xffffffff82513c00)
   (map.pmap 0xffffffff82513cc0)
   (pmap 0xffffffff82513d20)
 threads: 23
100012                   I                                   [swi5: fast taskq]
100014                   I                                   [swi6: task queue]
100016                   I                                   [swi6: Giant taskq]
100020                   I                                   [swi3: vm]
100021                   I                                   [swi1: netisr 0]
100022                   Run     CPU 0                       [swi4: clock (0)]
100023                   I                                   [swi4: clock (1)]
100035                   I                                   [irq24: virtio_pci0]
100036                   I                                   [irq25: virtio_pci0]
100037                   I                                   [irq26: virtio_pci0]
100038                   I                                   [irq27: virtio_pci0]
100039                   I                                   [irq28: virtio_pci1]
100040                   I                                   [irq29: virtio_pci1]
100041                   I                                   [irq30: virtio_pci1]
100042                   I                                   [irq31: virtio_pci1]
100043                   I                                   [irq32: virtio_pci1]
100048                   I                                   [irq10: virtio_pci2]
100050                   I                                   [irq1: atkbd0]
100051                   I                                   [irq12: psm0]
100052                   I                                   [swi0: uart uart++]
100060                   I                                   [swi1: pf send]
100073                   I                                   [swi1: hpts]
100074                   I                                   [swi1: hpts]
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 6566   846   846     0  T       (threaded)                  syz-executor.2
105295                   s                                   syz-executor.2
106899                   L      *kernel  0xfffff80004b72300  syz-executor.2
106904                   Run     CPU 1                       syz-executor.2
 5640     1  5640    65  Ss      select  0xfffff8003a0cc040  dhclient
 4942     1  4942     0  Ss      select  0xfffff8003a52b7c0  dhclient
 4939     1  4939     0  Ss      select  0xfffff8003a0cc0c0  dhclient
 4920     1  4920    65  Ss      select  0xfffff8001846ff40  dhclient
 4220     1  4220     0  Ss      select  0xfffff8003a3eb4c0  dhclient
 4217     1  4217     0  Ss      select  0xfffff8003a52b740  dhclient
 4203     1  4203    65  Ss      select  0xfffff8001846fdc0  dhclient
 2549     1  2549     0  Ss      select  0xfffff80004f54140  dhclient
 2543     1  2543     0  Ss      select  0xfffff8001846fbc0  dhclient
 2516     1  2516    65  Ss      select  0xfffff80004f540c0  dhclient
 1762     1  1762     0  Ss      select  0xfffff8003a3eb640  dhclient
 1759     1  1759     0  Ss      select  0xfffff8003a3eb7c0  dhclient
  853   780   853     0  Ss      piperd  0xfffff80018e065d0  syz-executor.3
  846   780   846     0  SWs     wait    0xfffff80018db5a50  syz-executor.2
  785   780   785     0  Ss      piperd  0xfffff80018d6a2e8  syz-executor.1
  783   780   783     0  Ss      piperd  0xfffff800185d9000  syz-executor.0
  780   778   778     0  R       (threaded)                  syz-fuzzer
100105                   S       uwait   0xfffff80004f3b380  syz-fuzzer
100109                   RunQ                                syz-fuzzer
100110                   S       uwait   0xfffff80004c0b100  syz-fuzzer
100111                   S       uwait   0xfffff80004c0b200  syz-fuzzer
100112                   S       uwait   0xfffff80004c0b300  syz-fuzzer
100113                   S       uwait   0xfffff80004c0b400  syz-fuzzer
100114                   S       uwait   0xfffff80004c0b500  syz-fuzzer
100115                   RunQ                                syz-fuzzer
100121                   S       uwait   0xfffff80018a01900  syz-fuzzer
  778   776   778     0  SWs     pause   0xfffff800183395d8  csh
  776   694   776     0  Ss      select  0xfffff8001846fa40  sshd
  760     1   760     0  Rs+                                 getty
  759     1   759     0  Ss+     ttyin   0xfffff80004c1acb0  getty
  758     1   758     0  Ss+     ttyin   0xfffff80004ba24b0  getty
  757     1   757     0  Ss+     ttyin   0xfffff80004ba2cb0  getty
  756     1   756     0  Ss+     ttyin   0xfffff80004ba64b0  getty
  755     1   755     0  Ss+     ttyin   0xfffff80004ba6cb0  getty
  754     1   754     0  Ss+     ttyin   0xfffff80004bab4b0  getty
  753     1   753     0  Ss+     ttyin   0xfffff80004babcb0  getty
  752     1   752     0  Ss+     ttyin   0xfffff80004bb14b0  getty
  698     1   698     0  Ss      nanslp  0xffffffff825331e0  cron
  694     1   694     0  Ss      select  0xfffff8001846fcc0  sshd
  507     1   507     0  Ss      select  0xfffff80004f54240  syslogd
  436     1   436     0  Ss      select  0xfffff80004f54940  devd
  435     1   435    65  Ss      select  0xfffff80004f545c0  dhclient
  350     1   350     0  Ss      select  0xfffff80004f547c0  dhclient
  347     1   347     0  Ss      select  0xfffff80004e128c0  dhclient
   23     0     0     0  DL      vlruwt  0xfffff80004dc4528  [vnlru]
   22     0     0     0  DL      syncer  0xffffffff826226b8  [syncer]
   21     0     0     0  RL      (threaded)                  [bufdaemon]
100070                   RunQ                                [bufdaemon]
100075                   D       -       0xffffffff8200ac80  [bufspacedaemon-0]
100087                   RunQ                                [/ worker]
   20     0     0     0  DL      psleep  0xffffffff82648cc8  [vmdaemon]
   19     0     0     0  LL      (threaded)                  [pagedaemon]
100068                   L      *kernel  0xfffff80004b72300  [dom0]
100076                   D       launds  0xffffffff8263d144  [laundry: dom0]
100077                   D       umarecl 0xffffffff8263c5a0  [uma]
   18     0     0     0  RL                                  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff82c1b818  [sctp_iterator]
   16     0     0     0  RL                                  [pf purge]
   15     0     0     0  DL      -       0xffffffff8261ed5c  [soaiod4]
    9     0     0     0  DL      -       0xffffffff8261ed5c  [soaiod3]
    8     0     0     0  DL      -       0xffffffff8261ed5c  [soaiod2]
    7     0     0     0  DL      -       0xffffffff8261ed5c  [soaiod1]
    6     0     0     0  DL      (threaded)                  [cam]
100034                   D       -       0xffffffff8223f2c0  [doneq0]
100067                   D       -       0xffffffff8223f190  [scanner]
   14     0     0     0  DL      seqstat 0xfffff8000458a888  [sequencer 00]
    5     0     0     0  DL      crypto_ 0xfffff80004539d90  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffff80004539d30  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff8263a630  [crypto]
   13     0     0     0  DL      (threaded)                  [geom]
100025                   D       -       0xffffffff82512a20  [g_event]
100026                   D       -       0xffffffff82512a28  [g_up]
100027                   D       -       0xffffffff82512a30  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100018                   D       -       0xfffff8000446e900  [thr_0]
100019                   D       -       0xfffff8000446e980  [thr_1]
   12     0     0     0  RL      (threaded)                  [intr]
100012                   I                                   [swi5: fast taskq]
100014                   I                                   [swi6: task queue]
100016                   I                                   [swi6: Giant taskq]
100020                   I                                   [swi3: vm]
100021                   I                                   [swi1: netisr 0]
100022                   Run     CPU 0                       [swi4: clock (0)]
100023                   I                                   [swi4: clock (1)]
100035                   I                                   [irq24: virtio_pci0]
100036                   I                                   [irq25: virtio_pci0]
100037                   I                                   [irq26: virtio_pci0]
100038                   I                                   [irq27: virtio_pci0]
100039                   I                                   [irq28: virtio_pci1]
100040                   I                                   [irq29: virtio_pci1]
100041                   I                                   [irq30: virtio_pci1]
100042                   I                                   [irq31: virtio_pci1]
100043                   I                                   [irq32: virtio_pci1]
100048                   I                                   [irq10: virtio_pci2]
100050                   I                                   [irq1: atkbd0]
100051                   I                                   [irq12: psm0]
100052                   I                                   [swi0: uart uart++]
100060                   I                                   [swi1: pf send]
100073                   I                                   [swi1: hpts]
100074                   I                                   [swi1: hpts]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffff8000448b528  [init]
   10     0     0     0  DL      audit_w 0xffffffff8263ab50  [audit]
    0     0     0     0  RLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff82512fb0  [swapper]
100005                   D       -       0xfffff8000446ee00  [if_config_tqg_0]
100006                   D       -       0xfffff8000446ed00  [softirq_0]
100007                   D       -       0xfffff8000446ec00  [softirq_1]
100008                   D       -       0xfffff8000446eb00  [if_io_tqg_0]
100009                   D       -       0xfffff8000446ea00  [if_io_tqg_1]
100010                   D       -       0xfffff8000446de00  [thread taskq]
100011                   D       -       0xfffff8000446dd00  [aiod_kick taskq]
100013                   D       -       0xfffff8000446db00  [kqueue_ctx taskq]
100015                   D       -       0xfffff8000446d900  [in6m_free taskq]
100017                   D       -       0xfffff8000446d700  [inm_free taskq]
100024                   D       -       0xfffff8000446d600  [firmware taskq]
100028                   D       -       0xfffff800044a9b00  [crypto_0]
100029                   D       -       0xfffff800044a9b00  [crypto_1]
100044                   D       -       0xfffff800044a9400  [vtnet0 rxq 0]
100045                   D       -       0xfffff800044a9300  [vtnet0 txq 0]
100046                   D       -       0xfffff800044a9200  [vtnet0 rxq 1]
100047                   D       -       0xfffff800044a9100  [vtnet0 txq 1]
100049                   D       vtbslp  0xfffff8000466a980  [virtio_balloon]
100053                   D       -       0xfffff800044a9000  [mca taskq]
100058                   RunQ                                [deadlkres]
100062                   D       -       0xfffff800044a9900  [acpi_task_0]
100063                   D       -       0xfffff800044a9900  [acpi_task_1]
100064                   D       -       0xfffff800044a9900  [acpi_task_2]
100066                   D       -       0xfffff800044a9500  [CAM taskq]
db> show all locks
Process 6566 (syz-executor.2) thread 0xfffffe0094e7b700 (106904)
exclusive rw kernel vm object (kernel vm object) r = 0 (0xffffffff8263c980) locked @ /syzkaller/managers/main/kernel/sys/vm/vm_kern.c:478
Process 19 (pagedaemon) thread 0xfffffe0051def100 (100068)
shared rw UMA lock (UMA lock) r = 0 (0xffffffff820442c0) locked @ /syzkaller/managers/main/kernel/sys/vm/uma_core.c:2831
exclusive sx umareclaim (umareclaim) r = 0 (0xffffffff8263c5a0) locked @ /syzkaller/managers/main/kernel/sys/vm/uma_core.c:4911
Process 12 (intr) thread 0xfffffe0004126c00 (100022)
exclusive sleep mutex sctp-send-tcb (tcbs) r = 0 (0xfffffe0095118c90) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:4837
exclusive sleep mutex sctp-tcb (tcb) r = 0 (0xfffffe0095118c70) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:4836
exclusive rw sctp-info (sctp-info) r = 0 (0xfffffe00041b22d8) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:4834
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
               pcb         4564         5642K        18849
            devbuf         4216         4340K         4244
          tcp_hpts            5         3201K            5
         sctp_stro         2267         2267K         5749
             vtbuf           24         1968K           46
         sysctloid        30605         1795K        30671
         sctp_atcl         4536         1701K        17138
              kobj          329         1316K          489
            newblk            7         1026K        11569
          vfscache            3         1025K            3
          inodedep            9          515K         6944
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
         sctp_atky         6979          309K        25264
           subproc          142          271K         6658
            acpica         1674          184K        58233
         vnet_data            1          168K            1
           tidhash            3          141K            3
           pagedep            9          130K        11614
        tfo_ccache            1          128K            1
               sem            4          106K            4
            DEVFS1          105          105K          122
            linker          278          100K          313
          filedesc           12           89K        11209
               BPF           46           88K           46
               bus          983           80K         3364
          mtx_pool            2           72K            2
         sctp_athm         4536           71K        17207
          sctp_map         4534           71K        11498
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          503           63K          503
              umtx          342           43K          342
           kdtrace          207           41K        13493
              vmem            3           34K            6
              temp           35           33K         2293
         hostcache            1           32K            1
               shm            1           32K            5
            DEVFS3          124           31K          134
         sctp_timw          120           30K          120
               msg            4           30K            4
        gtaskqueue           18           26K           18
            kbdmux            6           22K            6
            ifaddr           72           21K           72
        DEVFS_RULE           56           20K           56
         ufs_mount            5           17K            6
              proc            3           17K            3
               tty           16           16K           16
           ithread           99           16K           99
            bus-sc           32           14K         1598
            KTRACE          100           13K          100
             ifnet            7           13K            7
       ether_multi          152           13K          162
           lltable           39           12K           44
              kenv           93           12K           93
      eventhandler          129           11K          129
              GEOM           60           10K          489
              rman           82           10K          423
         in6_multi           65            9K           65
         bmsafemap            3            9K         6019
              UART           12            9K           12
           devstat            4            9K            4
              ksem            1            8K            3
               rpc            2            8K            2
             shmfd            1            8K            7
       pfs_vncache            1            8K            1
         pfs_nodes           20            8K           20
     audit_evclass          236            8K          294
            sglist            5            7K            5
           CAM DEV            3            6K          510
            plimit           24            6K          424
              cred           24            6K          251
            kqueue           62            6K         6584
         CAM queue            5            6K         1528
         taskqueue           48            6K           48
            ip6opt           20            5K           65
            DEVFSP           78            5K           82
           session           35            5K           50
          pf_ifnet           10            5K           19
       ufs_dirhash           12            5K           24
               UMA          260            5K          260
                vt           11            5K           11
           memdesc            1            4K            1
               MCA           32            4K           32
          kcovinfo           64            4K           68
             evdev            4            4K            4
           pwddesc           60            4K         6576
          routetbl           24            4K           24
             selfd           55            4K       114252
             lockf           32            4K           86
             hhook           13            4K           13
         proc-args           52            3K          676
          terminal           11            3K           11
           acpisem           22            3K           22
            select           19            3K           57
           uidinfo            3            3K           16
        local_apic            1            2K            1
           io_apic            1            2K            1
       fpukern_ctx            2            2K            2
         ipsec-saq            2            2K            2
            ip6ndp           12            2K           14
            Unitno           30            2K           52
          sctp_ifa           13            2K           14
           CAM XPT           22            2K          543
          in_multi            6            2K            8
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
               msi            9            2K            9
             clone            9            2K            9
               tun            7            2K            7
           softdep            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
             nhops            6            1K            8
       vnodemarker            2            1K           36
      NFSD session            1            1K            1
        CAM periph            4            1K          271
             ipsec            3            1K            3
          sctp_ifn            6            1K           14
               mld            6            1K            6
              igmp            6            1K            6
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           89
          pci_link           10            1K           10
             mkdir            5            1K        11186
            crypto            4            1K            4
 encap_export_host           12            1K           12
          procdesc            5            1K           18
         newdirblk            4            1K         5593
            diradd            4            1K         5822
              pfil            4            1K            4
           CAM SIM            2            1K            2
              cdev            2            1K            2
          freework            2            1K         7871
    chacha20random            1            1K            1
       inpcbpolicy           11            1K         1557
               osd            3            1K           10
            dirrem            1            1K         5783
          freeblks            1            1K         5926
            vnodes            1            1K            1
              ktls            1            1K            1
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
            feeder            7            1K            7
           tcpfunc            3            1K            3
        loginclass            3            1K            6
            prison            6            1K            6
        aesni_data            2            1K            2
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
            apmdev            1            1K            1
          atkbddev            2            1K            2
          CAM path            4            1K         1034
          freefile            1            1K         5781
          pmchooks            1            1K            1
            soname            4            1K        16060
          nexusdev            6            1K            6
          filecaps            5            1K          112
          sctp_vrf            1            1K            1
           entropy            2            1K           42
              vnet            1            1K            1
               pmc            1            1K            1
          acpiintr            1            1K            1
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          p1003.1b            1            1K            1
            mqdata            0            0K            0
          pf_table            0            0K            0
           pf_rule            0            0K            0
           pf_altq            0            0K            0
           pf_osfp            0            0K            0
           pf_temp            0            0K            0
        sctp_mcore            0            0K            0
        sctp_socko            0            0K         4621
         sctp_iter            0            0K            9
         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            9
         sctp_aadr            0            0K          501
         sctp_stri            0            0K         1468
         ciss_data            0            0K            0
           ath_hal            0            0K            0
            athdev            0            0K            0
        madt_table            0            0K            2
          smartpqi            0            0K            0
           ata_pci            0            0K            0
           ata_dma            0            0K            0
       ata_generic            0            0K            0
            pvscsi            0            0K            0
               amr            0            0K            0
           scsi_da            0            0K           69
            ata_da            0            0K            0
              iavf            0            0K            0
               ixl            0            0K            0
           scsi_ch            0            0K            0
           scsi_cd            0            0K            0
            USBdev            0            0K            0
               USB            0            0K            0
       AHCI driver            0            0K            0
               agp            0            0K            0
        ice-resmgr            0            0K            0
         ice-osdep            0            0K            0
               ice            0            0K            0
             axgbe            0            0K            0
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8347       2     1642027       0     125   34197504        0
         sctp_asoc   2288    2267     763        5749       0     126    6932640        0
       malloc-2048   2048    2275     703        9333       0       8    6098944        0
        RADIX NODE    144   24098    9667      556104       0      62    4862160        0
           sctp_ep   1280    2269     707        9327       0     128    3809280        0
      mbuf_cluster   2048    1343     197        1545       0     128    3153920        0
       malloc-1024   1024    2267     721        5749       0      16    3059712        0
              mbuf    256    9843     949     2563025       0     254    2762752        0
              pbuf   2632       0    1005           0       0       2    2645160        0
        malloc-384    384    4556    1644       24132       0      30    2380800        0
        sctp_raddr    736    2267     450        9087       0     131    1999712        0
          BUF TRIE    144     181   13287       10941       0      62    1939392        0
        malloc-384    384    4168       2        4169       0      30    1601280        0
       UMA Slabs 0    112   12024    1077       13206       0     126    1467312        0
       malloc-4096   4096     336       0         499       0       2    1376256        0
        malloc-128    128   10039     160       15902       0     126    1305472        0
        malloc-256    256    2485     770       16322       0      62     833280        0
         FFS inode   1128     514      25        6296       0       8     607992        0
        sctp_chunk    152    2197     507        7057       0     154     411008        0
         VM OBJECT    264    1261     104       95546       0      30     360360        0
       mbuf_packet    256     717     626       29299       0     254     343808        0
             VNODE    488     550      90        6334       0      30     312320        0
            THREAD   1792     146      25        6916       0       8     306432        0
      malloc-65536  65536       4       0           4       0       1     262144        0
       malloc-4096   4096      60       2        6577       0       2     253952        0
         malloc-64     64    2803     851        8857       0     254     233856        0
         malloc-64     64    3210     318        9729       0     254     225792        0
         malloc-32     32    4697    1729       20010       0     254     205632        0
         malloc-16     16   12663      87       12726       0     254     204000        0
         MAP ENTRY     96    1529     445      352811       0     126     189504        0
         UMA Zones    768     232       2         232       0      16     179712        0
         vmem btag     56    3002      82        3002       0     254     172704        0
        malloc-128    128    1194     108       40443       0     126     166656        0
         malloc-32     32    4819      95        4838       0     254     157248        0
       FFS2 dinode    256     514      86        6295       0      62     153600        0
       S VFS Cache    104    1016     349        6833       0     126     141960        0
        malloc-128    128     681     404        9534       0     126     138880        0
      malloc-65536  65536       2       0           2       0       1     131072        0
       malloc-1024   1024     125       3         143       0      16     131072        0
           VMSPACE   2544      37      14        6554       0       4     129744        0
            socket    944      36      92       12131       0     132     120832        0
        malloc-256    256      71     394       48043       0      62     119040        0
        256 Bucket   2048      56       2       21579       0       8     118784        0
      malloc-16384  16384       7       0        5604       0       1     114688        0
              PROC   1320      59      22        6575       0       8     106920        0
            DEVCTL   1024       0     100         129       0       0     102400        0
         malloc-16     16    4580    1670       21779       0     254     100000        0
         malloc-16     16    4563    1687       14718       0     254     100000        0
         filedesc0   1072      60      24        6576       0       8      90048        0
       malloc-4096   4096      21       0          23       0       2      86016        0
          UMA Kegs    384     218       5         218       0      30      85632        0
        malloc-256    256     197      88       11884       0      62      72960        0
       malloc-4096   4096      17       0          34       0       2      69632        0
        malloc-128    128     361     166        6167       0     126      67456        0
      malloc-65536  65536       1       0           1       0       1      65536        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-128    128     379      55        1326       0     126      55552        0
             g_bio    408       0     130       99203       0      30      53040        0
      malloc-16384  16384       3       0           3       0       1      49152        0
      malloc-16384  16384       3       0           9       0       1      49152        0
       malloc-8192   8192       6       0          97       0       1      49152        0
         malloc-64     64     353     340        7457       0     254      44352        0
        malloc-256    256     155      10         431       0      62      42240        0
       malloc-2048   2048       7      13       26211       0       8      40960        0
            pcpu-8      8    4605     515        4753       0     254      40960        0
         malloc-64     64     489     141        1039       0     254      40320        0
        malloc-384    384      83      17         195       0      30      38400        0
        malloc-256    256     137      13         137       0      62      38400        0
         64 Bucket    512      25      47       73045       0      30      36864        0
         malloc-64     64     170     397      130798       0     254      36288        0
      malloc-32768  32768       1       0           1       0       1      32768        0
       malloc-8192   8192       4       0          29       0       1      32768        0
           pcpu-64     64     456      56         456       0     254      32768        0
         malloc-64     64     127     377        6705       0     254      32256        0
             Files     80     232     168       27986       0     126      32000        0
        128 Bucket   1024      17      10        1235       0      16      27648        0
              pipe    744      23      12         425       0      16      26040        0
         TURNSTILE    136     172      17         172       0      62      25704        0
       malloc-8192   8192       3       0           3       0       1      24576        0
             KNOTE    160      28     122      516042       0      62      24000        0
            ttyinq    160     135      15         300       0      62      24000        0
             tcpcb   1048       4      18          85       0     128      23056        0
           ttyoutq    256      72      18         160       0      62      23040        0
        malloc-256    256      69      21         806       0      62      23040        0
           DIRHASH   1024      12       8          34       0      16      20480        0
             NAMEI   1024       0      20       38396       0      16      20480        0
       malloc-4096   4096       4       1        6375       0       2      20480        0
       malloc-2048   2048       9       1          27       0       8      20480        0
               PWD     32      19     611        5686       0     254      20160        0
        malloc-128    128     113      42        2402       0     126      19840        0
       Mountpoints   2752       2       5           2       0       4      19264        0
        malloc-384    384      39      11          39       0      30      19200        0
        malloc-256    256      18      57        8279       0      62      19200        0
        SLEEPQUEUE     88     172      20         172       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           4       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-2048   2048       5       3         197       0       8      16384        0
       malloc-1024   1024      12       4          21       0      16      16384        0
       malloc-1024   1024      11       5          11       0      16      16384        0
         malloc-32     32     335     169         653       0     254      16128        0
        malloc-128    128      95      29          96       0     126      15872        0
         32 Bucket    256      43      17      460254       0      62      15360        0
       malloc-1024   1024      11       1          21       0      16      12288        0
        malloc-512    512      10      14         636       0      30      12288        0
sctp_stream_msg_out    112      87      21        2543       0     186      12096        0
          ksiginfo    112      66      42        1440       0     126      12096        0
         malloc-64     64      90      99         127       0     254      12096        0
         malloc-32     32      62     316       15327       0     254      12096        0
         16 Bucket    144      33      51        1364       0      62      12096        0
          8 Bucket     80      60      90        5140       0     126      12000        0
     routing nhops    256      27      18          34       0      62      11520        0
             unpcb    256      20      25        1205       0     155      11520        0
        malloc-384    384      21       9         333       0      30      11520        0
        malloc-384    384      16      14          22       0      30      11520        0
            cpuset    104       8      85          75       0     126       9672        0
       malloc-8192   8192       1       0          30       0       1       8192        0
       malloc-8192   8192       1       0          21       0       1       8192        0
       malloc-2048   2048       3       1          48       0       8       8192        0
       malloc-1024   1024       6       2          49       0      16       8192        0
        malloc-512    512      13       3          47       0      30       8192        0
           rtentry    176      30      16          34       0      62       8096        0
              PGRP     88      35      57          50       0     126       8096        0
          rl_entry     40      81     121          81       0     254       8080        0
         malloc-64     64      26     100          26       0     254       8064        0
         malloc-32     32      68     184         953       0     254       8064        0
         malloc-32     32      61     191         197       0     254       8064        0
         malloc-32     32      19     233        1180       0     254       8064        0
         malloc-16     16       6     494           6       0     254       8000        0
         malloc-16     16      35     465        1701       0     254       8000        0
         malloc-16     16      25     475          46       0     254       8000        0
         malloc-16     16     265     235       27068       0     254       8000        0
             ripcb    488       5      11         116       0     139       7808        0
         tcp_inpcb    488       4      12          85       0     139       7808        0
        malloc-256    256      14      16         349       0      62       7680        0
     FPU_save_area    832       1       8           1       0      16       7488        0
 epoch_record pcpu    256       4      12           4       0      62       4096        0
       malloc-4096   4096       1       0           1       0       2       4096        0
       malloc-4096   4096       1       0          29       0       2       4096        0
       malloc-2048   2048       1       1           1       0       8       4096        0
       malloc-2048   2048       2       0           2       0       8       4096        0
       malloc-1024   1024       2       2         156       0      16       4096        0
       malloc-1024   1024       2       2        1274       0      16       4096        0
        malloc-512    512       1       7           1       0      30       4096        0
        malloc-512    512       4       4          59       0      30       4096        0
        malloc-512    512       1       7           1       0      30       4096        0
           pcpu-16     16       7     249           7       0     254       4096        0
        sctp_laddr     48       8      76        1677       0     254       4032        0
         hostcache     96       1      41           1       0     187       4032        0
             udpcb     32       2     124        1356       0     254       4032        0
         malloc-32     32       6     120          28       0     254       4032        0
          4 Bucket     48       1      83         265       0     254       4032        0
          2 Bucket     32       2     124        2362       0     254       4032        0
      vtnet_tx_hdr     24       0     167      821099       0     254       4008        0
         malloc-16     16     195      55        1369       0     254       4000        0
        malloc-128    128       5      26           5       0     126       3968        0
         udp_inpcb    488       2       6         204       0     139       3904        0
       UMA Slabs 1    176       9      13           9       0      62       3872        0
              kenv    258       3      12        1053       0      30       3870        0
            mqnode    416       3       6           3       0      30       3744        0
        KMAP ENTRY     96      12      27          12       0       0       3744        0
              vmem   1856       1       1           1       0       8       3712        0
           SMR CPU     32       2      29           2       0     254        992        0
        SMR SHARED     24       2      29           2       0     254        744        0
       FFS1 dinode    128       0       0           0       0     126          0        0
             swblk    136       0       0           0       0      62          0        0
          swpctrie    144       0       0           0       0      62          0        0
   sctp_asconf_ack     48       0       0         479       0     254          0        0
       sctp_asconf     40       0       0           0       0     254          0        0
        sctp_readq    152       0       0          11       0     154          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     155          0        0
     pf state keys     88       0       0           0       0     126          0        0
         pf states    296       0       0           0       0     139          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    704       0       0           1       0      16          0        0
      tcp_rack_map    120       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
    IPsec SA lft_c     16       0       0           0       0     254          0        0
     udplite_inpcb    488       0       0        1152       0     139          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     139          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
          sackhole     32       0       0           2       0     254          0        0
          syncache    168       0       0           4       0     155          0        0
             tcptw     88       0       0           0       0     187          0        0
               ipq     56       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
        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    224       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
   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     125          0        0
     mbuf_jumbo_9k   9216       0       0           0       0     125          0        0
      audit_record   1280       0       0           0       0       8          0        0
         domainset     40       0       0          64       0     254          0        0
        MAC labels     40       0       0           0       0     254          0        0
            vnpbuf   2632       0       0           0       0      31          0        0
            clpbuf   2632       0       0          20       0       7          0        0
            mdpbuf   2632       0       0           0       0       3          0        0
           nfspbuf   2632       0       0           0       0       7          0        0
            swwbuf   2632       0       0           0       0       4          0        0
            swrbuf   2632       0       0           0       0       7          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         124       0       1          0        0
      malloc-65536  65536       0       0         180       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         117       0       1          0        0
      malloc-32768  32768       0       0        3078       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         153       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-4096   4096       0       0           1       0       2          0        0
       malloc-2048   2048       0       0          36       0       8          0        0
        malloc-512    512       0       0           0       0      30          0        0
        malloc-512    512       0       0        1468       0      30          0        0
        malloc-512    512       0       0           1       0      30          0        0
        malloc-384    384       0       0           0       0      30          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 (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2021/02/05 10:19 freebsd-src 7d4dceec1030 42b90a7c console log report ci-freebsd-main Fatal trap 12: page fault in sctp_free_assoc
2021/04/01 08:45 freebsd-src 4084b1ab0413 6a81331a console log report ci-freebsd-i386 Fatal trap 12: page fault in sctp_free_assoc
* Struck through repros no longer work on HEAD.