syzbot


Fatal trap NUM: page fault in tcp_usr_shutdown

Status: fixed on 2021/12/28 15:41
Reported-by: syzbot+794ae8467b82a939b808@syzkaller.appspotmail.com
Fix commit: 4287aa56197f tcp_usr_shutdown: don't cast inp_ppcb to tcpcb before checking inp_flags
First crash: 822d, last: 821d

Sample crash report:
Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address	= 0x0
fault code		= supervisor read data, page not present
instruction pointer	= 0x20:0xffffffff81b37b9e
stack pointer	        = 0x28:0xfffffe008fe64b40
frame pointer	        = 0x28:0xfffffe008fe64c20
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		= 778 (syz-executor8138523)
trap number		= 12
panic: page fault
cpuid = 1
time = 1640605246
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe008fe64350
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe008fe644b0
vpanic() at vpanic+0x2b8/frame 0xfffffe008fe64590
panic() at panic+0xb5/frame 0xfffffe008fe64650
trap_fatal() at trap_fatal+0x6a4/frame 0xfffffe008fe64750
trap_pfault() at trap_pfault+0x186/frame 0xfffffe008fe64890
trap() at trap+0x5e4/frame 0xfffffe008fe64a70
calltrap() at calltrap+0x8/frame 0xfffffe008fe64a70
--- trap 0xc, rip = 0xffffffff81b37b9e, rsp = 0xfffffe008fe64b40, rbp = 0xfffffe008fe64c20 ---
tcp_usr_shutdown() at tcp_usr_shutdown+0x22e/frame 0xfffffe008fe64c20
soshutdown() at soshutdown+0x2d1/frame 0xfffffe008fe64c70
kern_shutdown() at kern_shutdown+0x112/frame 0xfffffe008fe64d30
amd64_syscall() at amd64_syscall+0x410/frame 0xfffffe008fe64f30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe008fe64f30
--- syscall (0, FreeBSD ELF64, nosys), rip = 0x2b3c9a, rsp = 0x7fffffffea58, rbp = 0x7fffffffea70 ---
KDB: enter: panic
[ thread pid 778 tid 100108 ]
Stopped at      kdb_enter+0x6b: movq    $0,0x250d50a(%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         0x981981030e005f6f
rdx         0xdffff7c000000000
rbx                          0
rsp         0xfffffe008fe64490
rbp         0xfffffe008fe644b0
rsi                        0x1
rdi                          0
r8                         0x3
r9                  0xffffffff
r10                          0
r11         0xfffffe0058d58530
r12         0xfffffe0058d58020
r13         0xfffffe008fe64501
r14         0xffffffff82b44980  .str.18
r15         0xffffffff82b44980  .str.18
rip         0xffffffff81754d0b  kdb_enter+0x6b
rflags                    0x46
kdb_enter+0x6b: movq    $0,0x250d50a(%rip)
db> show proc
Process 778 (syz-executor8138523) at 0xfffffe00929ad000:
 state: NORMAL
 uid: 0  gids: 0, 0, 5
 parent: pid 776 at 0xfffffe00929ad548
 ABI: FreeBSD ELF64
 flag: 0x10004000  flag2: 0
 arguments: ./syz-executor813852372
 reaper: 0xfffffe0053de5000 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffffe009275b9f8
   (map 0xfffffe009275b9f8)
   (map.pmap 0xfffffe009275bab8)
   (pmap 0xfffffe009275bb20)
 threads: 1
100108                   Run     CPU 1                       syz-executor8138523
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
  778   776   776     0  R       CPU 1                       syz-executor8138523
  776   774   776     0  Ss      pause   0xfffffe00929ad5f8  csh
  774   687   774     0  Ss      select  0xfffffe00925710c0  sshd
  756     1   756     0  Rs+     CPU 0                       getty
  755     1   755     0  Ss+     ttyin   0xfffffe005863acb0  getty
  754     1   754     0  Ss+     ttyin   0xfffffe005863b4b0  getty
  753     1   753     0  Ss+     ttyin   0xfffffe005863bcb0  getty
  752     1   752     0  Ss+     ttyin   0xfffffe005863c4b0  getty
  751     1   751     0  Ss+     ttyin   0xfffffe005863ccb0  getty
  750     1   750     0  Ss+     ttyin   0xfffffe005863d4b0  getty
  749     1   749     0  Ss+     ttyin   0xfffffe005863dcb0  getty
  748     1   748     0  Ss+     ttyin   0xfffffe00576ee4b0  getty
  746     1    17     0  S+      piperd  0xfffffe0058b952e8  logger
  745   744    17     0  S+      nanslp  0xffffffff83c2f8c0  sleep
  744     1    17     0  S+      wait    0xfffffe00929a9000  sh
  692     1   692     0  Ss      nanslp  0xffffffff83c2f8c1  cron
  687     1   687     0  Ss      select  0xfffffe00925715c0  sshd
  500     1   500     0  Ss      select  0xfffffe0092572740  syslogd
  429     1   429     0  Ss      select  0xfffffe00925720c0  devd
  428     1   428    65  Ss      select  0xfffffe0058b2c3c0  dhclient
  343     1   343     0  Ss      select  0xfffffe0092571dc0  dhclient
  340     1   340     0  Ss      select  0xfffffe00542384c0  dhclient
   16     0     0     0  DL      vlruwt  0xfffffe005888ba90  [vnlru]
   15     0     0     0  DL      syncer  0xffffffff83d550c0  [syncer]
    9     0     0     0  DL      (threaded)                  [bufdaemon]
100078                   D       qsleep  0xffffffff83d536e0  [bufdaemon]
100081                   D       -       0xffffffff83011f80  [bufspacedaemon-0]
100094                   D       sdflush 0xfffffe0058c8ace8  [/ worker]
    8     0     0     0  DL      psleep  0xffffffff83d86b80  [vmdaemon]
    7     0     0     0  DL      (threaded)                  [pagedaemon]
100076                   D       psleep  0xffffffff83d7aa38  [dom0]
100079                   D       launds  0xffffffff83d7aa44  [laundry: dom0]
100080                   D       umarcl  0xffffffff81e44af0  [uma]
    6     0     0     0  DL      -       0xffffffff839eb788  [rand_harvestq]
    5     0     0     0  DL      waiting 0xffffffff845941c0  [sctp_iterator]
    4     0     0     0  DL      pftm    0xffffffff8488f530  [pf purge]
    3     0     0     0  DL      (threaded)                  [cam]
100045                   D       -       0xffffffff8388d740  [doneq0]
100046                   D       -       0xffffffff8388d6c0  [async]
100075                   D       -       0xffffffff8388d540  [scanner]
   14     0     0     0  DL      seqstat 0xfffffe005714cc88  [sequencer 00]
    2     0     0     0  DL      (threaded)                  [crypto]
100041                   D       crypto_ 0xffffffff83d76280  [crypto]
100042                   D       crypto_ 0xfffffe0053fb8030  [crypto returns 0]
100043                   D       crypto_ 0xfffffe0053fb8080  [crypto returns 1]
   13     0     0     0  DL      (threaded)                  [geom]
100036                   D       -       0xffffffff83c04f80  [g_event]
100037                   D       -       0xffffffff83c04fa0  [g_up]
100038                   D       -       0xffffffff83c04fc0  [g_down]
   12     0     0     0  WL      (threaded)                  [intr]
100013                   I                                   [swi6: task queue]
100014                   I                                   [swi6: Giant taskq]
100020                   I                                   [swi5: fast taskq]
100029                   I                                   [swi4: clock (0)]
100030                   I                                   [swi4: clock (1)]
100031                   I                                   [swi3: vm]
100032                   I                                   [swi1: netisr 0]
100033                   I                                   [swi1: hpts]
100034                   I                                   [swi1: hpts]
100047                   I                                   [irq24: virtio_pci0]
100048                   I                                   [irq25: virtio_pci0]
100049                   I                                   [irq26: virtio_pci0]
100050                   I                                   [irq27: virtio_pci0]
100051                   I                                   [irq28: virtio_pci1]
100052                   I                                   [irq29: virtio_pci1]
100053                   I                                   [irq30: virtio_pci1]
100054                   I                                   [irq31: virtio_pci1]
100055                   I                                   [irq32: virtio_pci1]
100060                   I                                   [irq10: virtio_pci2]
100062                   I                                   [irq1: atkbd0]
100063                   I                                   [irq12: psm0]
100064                   I                                   [swi0: uart uart++]
100067                   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    0xfffffe0053de5000  [init]
   10     0     0     0  DL      audit_w 0xffffffff83d76d60  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff83c05a20  [swapper]
100005                   D       -       0xfffffe0053e15000  [if_io_tqg_0]
100006                   D       -       0xfffffe0053e14e00  [if_io_tqg_1]
100007                   D       -       0xfffffe0053e14d00  [if_config_tqg_0]
100008                   D       -       0xfffffe0053e14c00  [softirq_0]
100009                   D       -       0xfffffe0053e14b00  [softirq_1]
100010                   D       -       0xfffffe00081db000  [kqueue_ctx taskq]
100011                   D       -       0xfffffe00081dae00  [pci_hp taskq]
100012                   D       -       0xfffffe00081dad00  [linuxkpi_irq_wq]
100015                   D       -       0xfffffe00081daa00  [aiod_kick taskq]
100016                   D       -       0xfffffe00081da900  [inm_free taskq]
100017                   D       -       0xfffffe00081da800  [in6m_free taskq]
100018                   D       -       0xfffffe00081da700  [deferred_unmount ta]
100019                   D       -       0xfffffe00081da600  [thread taskq]
100021                   D       -       0xfffffe00081da400  [linuxkpi_short_wq_0]
100022                   D       -       0xfffffe00081da400  [linuxkpi_short_wq_1]
100023                   D       -       0xfffffe00081da400  [linuxkpi_short_wq_2]
100024                   D       -       0xfffffe00081da400  [linuxkpi_short_wq_3]
100025                   D       -       0xfffffe00081da300  [linuxkpi_long_wq_0]
100026                   D       -       0xfffffe00081da300  [linuxkpi_long_wq_1]
100027                   D       -       0xfffffe00081da300  [linuxkpi_long_wq_2]
100028                   D       -       0xfffffe00081da300  [linuxkpi_long_wq_3]
100035                   D       -       0xfffffe0053f69300  [firmware taskq]
100039                   D       -       0xfffffe0053f68800  [crypto_0]
100040                   D       -       0xfffffe0053f68800  [crypto_1]
100056                   D       -       0xfffffe0053f67e00  [vtnet0 rxq 0]
100057                   D       -       0xfffffe0053f67d00  [vtnet0 txq 0]
100058                   D       -       0xfffffe0053f67c00  [vtnet0 rxq 1]
100059                   D       -       0xfffffe0053f67b00  [vtnet0 txq 1]
100061                   D       vtbslp  0xfffffe00571a5600  [virtio_balloon]
100065                   D       -       0xffffffff82b4a460  [deadlkres]
100070                   D       -       0xfffffe0053f67900  [acpi_task_0]
100071                   D       -       0xfffffe0053f67900  [acpi_task_1]
100072                   D       -       0xfffffe0053f67900  [acpi_task_2]
100073                   D       -       0xfffffe00081db100  [mca taskq]
100074                   D       -       0xfffffe0053f68100  [CAM taskq]
db> show all locks
Process 778 (syz-executor8138523) thread 0xfffffe0058d58020 (100108)
exclusive rw tcpinp (tcpinp) r = 0 (0xfffffe0092937360) locked @ /syzkaller/managers/main/kernel/sys/netinet/tcp_usrreq.c:902
Process 756 (getty) thread 0xfffffe00929a41e0 (100115)
exclusive sleep mutex ttymtx (ttymtx) r = 0 (0xfffffe00576e3808) locked @ /syzkaller/managers/main/kernel/sys/kern/tty_ttydisc.c:489
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
          tcp_hpts            6         4801K            6
            devbuf         4213         4323K         4238
         sysctloid        35454         2089K        35525
             vtbuf           24         1968K           46
              kobj          322         1288K          481
            newblk          706         1201K          718
          vfscache            3         1025K            3
               pcb           19          537K           38
          inodedep           49          530K           71
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
            acpica         1674          184K        56282
           subproc           88          175K          828
         vnet_data            1          168K            1
           tidhash            3          141K            3
              vmem            3          137K            3
            linker          353          134K          381
           pagedep           14          132K           18
        tfo_ccache            1          128K            1
               sem            4          106K            4
            DEVFS1          105          105K          114
               bus          973           80K         3426
          mtx_pool            2           72K            2
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          505           64K          505
              temp           17           33K         1606
         hostcache            1           32K            1
               shm            1           32K            1
           kdtrace          156           32K          896
            DEVFS3          124           31K          134
              umtx          242           31K          242
               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         1651
            KTRACE          100           13K          100
              kenv           95           12K           95
      eventhandler          136           12K          136
            ifaddr           30           12K           32
          routetbl           50           11K          176
         CAM queue            5           11K         1528
              GEOM           61           10K          490
              rman           84           10K          425
              cred           37           10K          234
         bmsafemap            4            9K           40
              UART           12            9K           12
           devstat            4            9K            4
              ksem            1            8K            1
               rpc            2            8K            2
             shmfd            1            8K            1
       pfs_vncache            1            8K            1
         pfs_nodes           20            8K           20
     audit_evclass          237            8K          296
         taskqueue           63            7K           63
            sglist            5            7K            5
           CAM DEV            3            6K          510
       ufs_dirhash           24            5K           24
               UMA          272            5K          272
            dirrem           17            5K           28
            plimit           17            5K          322
                vt           11            5K           11
             ifnet            3            5K            3
           memdesc            1            4K            1
               MCA           32            4K           32
          filedesc            1            4K            1
             evdev            4            4K            4
           acpisem           28            4K           28
             hhook           15            4K           17
       ether_multi           40            4K           50
            diradd           25            4K           36
           lltable           11            4K           11
          pf_ifnet            5            3K            6
         in6_multi           25            3K           25
          terminal           11            3K           11
           session           20            3K           31
            kqueue           39            3K          781
           pwddesc           39            3K          779
           uidinfo            3            3K            8
         proc-args           62            3K         1720
        local_apic            1            2K            1
           io_apic            1            2K            1
       fpukern_ctx            2            2K            2
         ipsec-saq            2            2K            2
             selfd           27            2K        10715
            Unitno           27            2K           39
           CAM XPT           22            2K          543
             lockf           15            2K           22
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
               msi            9            2K            9
             clone            9            2K            9
           softdep            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
       vnodemarker            2            1K            8
      NFSD session            1            1K            1
        CAM periph            4            1K          271
            select            7            1K           29
             ipsec            3            1K            3
          indirdep            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
         newdirblk            4            1K            8
             mkdir            4            1K           16
          in_multi            2            1K            4
              pfil            4            1K            4
              cdev            2            1K            2
    chacha20random            1            1K            1
               osd            7            1K           19
       inpcbpolicy           11            1K          140
          sctp_ifn            2            1K            6
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
            DEVFSP            4            1K            9
             DEVFS            9            1K           10
               mld            2            1K            2
              igmp            2            1K            2
            vnodes            1            1K            1
           CAM SIM            2            1K            2
            feeder            7            1K            7
           tcpfunc            3            1K            3
            CC Mem            3            1K            8
        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
             xform            2            1K           49
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
          CAM path            4            1K         1034
          procdesc            1            1K            6
          pmchooks            1            1K            1
            soname            4            1K         3473
          filecaps            4            1K           66
               tun            3            1K            3
          sctp_vrf            1            1K            1
              vnet            1            1K            1
           entropy            2            1K           35
          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           26
          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
            tcp_do            0            0K            0
           tcp_fsb            0            0K            0
        sctp_mcore            0            0K            0
        sctp_socko            0            0K            0
         sctp_iter            0            0K            4
         sctp_mvrf            0            0K            0
         sctp_timw            0            0K            0
         sctp_cpal            0            0K            0
         sctp_cmsg            0            0K            0
         sctp_stre            0            0K            0
         sctp_athi            0            0K            0
         sctp_athm            0            0K            0
         sctp_atky            0            0K            0
         sctp_atcl            0            0K            0
         sctp_a_it            0            0K            4
         sctp_aadr            0            0K            0
         sctp_stro            0            0K            0
         sctp_stri            0            0K            0
          sctp_map            0            0K            0
           filemon            0            0K            0
     NFSCL flayout            0            0K            0
      NFSCL layout            0            0K            0
        madt_table            0            0K            2
          smartpqi            0            0K            0
     NFSD rollback            0            0K            0
      NFSCL diroff            0            0K            0
       NEWdirectio            0            0K            0
               ixl            0            0K            0
        NEWNFSnode            0            0K            0
         NFSCL lck            0            0K            0
      NFSCL lckown            0            0K            0
      NFSCL client            0            0K            0
       NFSCL deleg            0            0K            0
        NFSCL open            0            0K            0
       NFSCL owner            0            0K            0
        ice-resmgr            0            0K            0
         ice-osdep            0            0K            0
               ice            0            0K            0
              iavf            0            0K            0
             axgbe            0            0K            0
            NFS fh            0            0K            0
           NFS req            0            0K            0
     NFSD usrgroup            0            0K            0
       NFSD string            0            0K            0
       NFSD V4lock            0            0K            0
      NFSD V4state            0            0K            0
     NFSD srvcache            0            0K            0
       msdosfs_fat            0            0K            0
          xen_intr            0            0K            0
     msdosfs_mount            0            0K            0
      msdosfs_node            0            0K            0
           xen_hvm            0            0K            0
         legacydrv            0            0K            0
            qpidrv            0            0K            0
      dmar_idpgtbl            0            0K            0
          dmar_dom            0            0K            0
          dmar_ctx            0            0K            0
            DEVFS4            0            0K            0
              isci            0            0K            0
      iommu_dmamap            0            0K            0
     hyperv_socket            0            0K            0
           bxe_ilt            0            0K            0
            DEVFS2            0            0K            0
            xenbus            0            0K            0
            gntdev            0            0K            0
       privcmd_dev            0            0K            0
        evtchn_dev            0            0K            0
     vm_fictitious            0            0K            0
          xenstore            0            0K            0
         scsi_pass            0            0K            0
         ciss_data            0            0K            0
               xnb            0            0K            0
              xbbd            0            0K            0
               xbd            0            0K            0
           Balloon            0            0K            0
          sysmouse            0            0K            0
            vtfont            0            0K            0
           UMAHash            0            0K            0
         BACKLIGHT            0            0K            0
           ath_hal            0            0K            0
         vm_pgdata            0            0K            0
           jblocks            0            0K            0
          savedino            0            0K           16
          sentinel            0            0K            0
            jfsync            0            0K            0
            jtrunc            0            0K            0
             sbdep            0            0K            2
           jsegdep            0            0K            0
              jseg            0            0K            0
         jfreefrag            0            0K            0
          jfreeblk            0            0K            0
           jnewblk            0            0K            0
            jmvref            0            0K            0
           jremref            0            0K            0
           jaddref            0            0K            0
           freedep            0            0K            0
          freefile            0            0K            9
          freeblks            0            0K           25
          freefrag            0            0K            1
        allocindir            0            0K            0
       allocdirect            0            0K            0
          ufs_trim            0            0K            0
           mactemp            0            0K            0
     audit_trigger            0            0K            0
 audit_pipe_presel            0            0K            0
     audit_pipeent            0            0K            0
        audit_pipe            0            0K            0
      audit_evname            0            0K            0
         audit_bsm            0            0K            0
      audit_gidset            0            0K            0
        audit_text            0            0K            0
        audit_path            0            0K            0
        audit_data            0            0K            0
        audit_cred            0            0K            0
            athdev            0            0K            0
           ata_pci            0            0K            0
           ata_dma            0            0K            0
       ata_generic            0            0K            0
            pvscsi            0            0K            0
           scsi_da            0            0K           69
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               USB            0            0K            0
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               agp            0            0K            0
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        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
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        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
            MLX5EN            0            0K            0
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        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
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              ipid            0            0K            0
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         80211node            0            0K            0
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            statfs            0            0K          195
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ag_tgt_map_t malloc            0            0K            0
ag_slr_map_t malloc            0            0K            0
lDevFlags * malloc            0            0K            0
tiDeviceHandle_t * malloc            0            0K            0
ag_portal_data_t malloc            0            0K            0
ag_device_t malloc            0            0K            0
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8320    1078       14572       0     254   38494208        0
              mbuf    256    8577    1084       17450       0     254    2473216        0
              pbuf   2624       0     794           0       0       2    2083456        0
          BUF TRIE    144     183   11605         504       0      62    1697472        0
        malloc-384    384    4117      53        4118       0      30    1601280        0
        malloc-128    128   11681     192       11789       0     126    1519744        0
       malloc-4096   4096     323       1         483       0       2    1327104        0
       UMA Slabs 0    112   10432       2       10432       0     126    1168608        0
         vmem btag     56   16258      53       16258       0     254     913416        0
         FFS inode   1160     499      19         508       0       8     600880        0
             tcpcb   1096       3     508           8       0     254     560056        0
      mbuf_cluster   2048     254       0         254       0     254     520192        0
        RADIX NODE    144    3281     158       19874       0      62     495216        0
            socket    960      19     489        1336       0     254     487680        0
         VM OBJECT    264    1409     121       24236       0      30     403920        0
          lkpicurr    168       2    2350           2       0      62     395136        0
      malloc-65536  65536       6       0           6       0       1     393216        0
            lkpimm    168       1    2327           1       0      62     391104        0
        256 Bucket   2048     130      16         997       0       8     299008        0
         malloc-64     64    3932     415        4716       0     254     278208        0
             VNODE    448     529      47         540       0      30     258048        0
        malloc-256    256     895     110        1032       0      62     257280        0
         malloc-16     16   14664     336       14733       0     254     240000        0
            DEVCTL   1024       0     220         126       0       0     225280        0
            THREAD   1808     116       5         116       0       8     218768        0
             ripcb    424       1     512           4       0     254     217512        0
         tcp_inpcb    424       4     509           8       0     254     217512        0
         udp_inpcb    424       6     507         128       0     254     217512        0
         MAP ENTRY     96    1561     581       83797       0     126     205632        0
      malloc-65536  65536       0       3         136       0       1     196608        0
         UMA Zones    768     244       0         244       0      16     187392        0
         malloc-32     32    5374     296        5431       0     254     181440        0
        malloc-128    128    1207     188       26343       0     126     178560        0
       malloc-4096   4096      39       3         779       0       2     172032        0
       malloc-1024   1024     129      15         138       0      16     147456        0
       FFS2 dinode    256     499      71         508       0      62     145920        0
      malloc-65536  65536       0       2          46       0       1     131072        0
      malloc-65536  65536       0       2           8       0       1     131072        0
      malloc-32768  32768       0       4         120       0       1     131072        0
        malloc-128    128     947      76        5164       0     126     130944        0
             unpcb    256       7     503        1179       0     254     130560        0
       S VFS Cache    104     966     204        1007       0     126     121680        0
          ksiginfo    112      40    1004          55       0     126     116928        0
     FPU_save_area    832     118      17         130       0      16     112320        0
          UMA Kegs    384     230       3         230       0      30      89472        0
        128 Bucket   1024      44      39         461       0      16      84992        0
       malloc-8192   8192       8       2          10       0       1      81920        0
       malloc-4096   4096      17       3          28       0       2      81920        0
       malloc-2048   2048       7      33        1039       0       8      81920        0
        malloc-256    256     220      95         419       0      62      80640        0
           VMSPACE   2552      23       7         764       0       4      76560        0
             g_bio    408       0     180        4474       0      30      73440        0
         malloc-64     64     548     523        1882       0     254      68544        0
        malloc-128    128     311     216         375       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-8192   8192       6       2          34       0       1      65536        0
       mbuf_packet    256       0     254          93       0     254      65024        0
              PROC   1352      38      10         778       0       8      64896        0
         filedesc0   1072      39      17         779       0       8      60032        0
         64 Bucket    512      64      40        1642       0      30      53248        0
         malloc-64     64     473     346       11356       0     254      52416        0
        malloc-256    256      93     102         568       0      62      49920        0
         32 Bucket    256      51     144        6162       0      62      49920        0
           DIRHASH   1024      34      14          34       0      16      49152        0
             NAMEI   1024       0      48       12227       0      16      49152        0
      malloc-16384  16384       3       0           3       0       1      49152        0
      malloc-16384  16384       0       3         160       0       1      49152        0
       malloc-8192   8192       3       3         104       0       1      49152        0
       malloc-1024   1024      11      37        1430       0      16      49152        0
        malloc-384    384      72      48          91       0      30      46080        0
          syncache    168       0     264           5       0     254      44352        0
            clpbuf   2624       0      16          22       0      16      41984        0
       malloc-4096   4096       7       3          12       0       2      40960        0
       Mountpoints   2752       2      12           2       0       4      38528        0
            pcpu-8      8    4253     355        4281       0     254      36864        0
         malloc-64     64      33     534          33       0     254      36288        0
         malloc-64     64      38     529       13347       0     254      36288        0
         malloc-64     64      69     498        1372       0     254      36288        0
         malloc-64     64     257     310        1037       0     254      36288        0
         malloc-64     64      99     468         109       0     254      36288        0
        malloc-128    128      10     269          10       0     126      35712        0
        malloc-128    128      25     254          35       0     126      35712        0
        malloc-128    128      65     214         210       0     126      35712        0
        malloc-128    128      53     226         307       0     126      35712        0
     routing nhops    256      10     125          17       0      62      34560        0
           ttyoutq    256      72      63         160       0      62      34560        0
        malloc-384    384      61      29          93       0      30      34560        0
        malloc-384    384      50      40          50       0      30      34560        0
        malloc-256    256       2     133          90       0      62      34560        0
        malloc-256    256      19     116         312       0      62      34560        0
        malloc-256    256      29     106        1067       0      62      34560        0
        malloc-256    256      17     118          85       0      62      34560        0
        malloc-256    256      19     116         275       0      62      34560        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-16384  16384       1       1          16       0       1      32768        0
      malloc-16384  16384       2       0           2       0       1      32768        0
       malloc-8192   8192       4       0           4       0       1      32768        0
       malloc-8192   8192       4       0           4       0       1      32768        0
       malloc-4096   4096       4       4         820       0       2      32768        0
       malloc-2048   2048       2      14           2       0       8      32768        0
       malloc-2048   2048       2      14           2       0       8      32768        0
       malloc-2048   2048       1      15          38       0       8      32768        0
       malloc-2048   2048       5      11          14       0       8      32768        0
       malloc-2048   2048       0      16          50       0       8      32768        0
       malloc-2048   2048       8       8           8       0       8      32768        0
       malloc-2048   2048       5      11         196       0       8      32768        0
       malloc-1024   1024       0      32           4       0      16      32768        0
       malloc-1024   1024       9      23          10       0      16      32768        0
       malloc-1024   1024       6      26          26       0      16      32768        0
       malloc-1024   1024       8      24           8       0      16      32768        0
       malloc-1024   1024       2      30           2       0      16      32768        0
        malloc-512    512      11      53          60       0      30      32768        0
           pcpu-64     64     479      33         479       0     254      32768        0
            ttyinq    160     135      65         300       0      62      32000        0
            cpuset    104       7     272           7       0     126      29016        0
        sctp_laddr     48       0     588           4       0     254      28224        0
         malloc-32     32     305     577        4317       0     254      28224        0
         16 Bucket    144      45     151         224       0      62      28224        0
          4 Bucket     48       6     582          48       0     254      28224        0
            da_ccb    544       0      49        1239       0      16      26656        0
              pipe    744       7      28         284       0      16      26040        0
         TURNSTILE    136     122      67         122       0      62      25704        0
       malloc-4096   4096       3       3           5       0       2      24576        0
           rtentry    176      13     125          17       0      62      24288        0
              PGRP     88      20     256          31       0     126      24288        0
          rl_entry     40      33     573          33       0     254      24240        0
             Files     80      72     228        6581       0     126      24000        0
          8 Bucket     80      39     261         223       0     126      24000        0
        malloc-384    384       1      59         341       0      30      23040        0
        malloc-384    384      34      26          36       0      30      23040        0
        malloc-384    384       4      56           4       0      30      23040        0
        SLEEPQUEUE     88     122     134         122       0     126      22528        0
         hostcache     64       1     314           1       0     254      20160        0
         tcp_inpcb     32       1     629           2       0     254      20160        0
             udpcb     32       6     624         128       0     254      20160        0
         udp_inpcb     32       3     627          40       0     254      20160        0
              ertt     72       3     277           8       0     126      20160        0
               PWD     32      10     620         100       0     254      20160        0
         malloc-32     32       3     627          15       0     254      20160        0
         malloc-32     32      21     609          35       0     254      20160        0
         malloc-32     32     129     501         684       0     254      20160        0
         malloc-32     32      52     578         894       0     254      20160        0
         malloc-32     32      75     555         129       0     254      20160        0
         malloc-32     32      16     614          45       0     254      20160        0
          2 Bucket     32      55     575         303       0     254      20160        0
 epoch_record pcpu    256       4      60           4       0      62      16384        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-1024   1024       4      12         157       0      16      16384        0
        malloc-512    512       1      31           1       0      30      16384        0
        malloc-512    512       3      29           3       0      30      16384        0
        malloc-512    512       2      30         135       0      30      16384        0
        malloc-512    512       0      32           1       0      30      16384        0
        malloc-512    512       1      31           1       0      30      16384        0
        malloc-512    512       0      32           1       0      30      16384        0
           SMR CPU     32       7     504           7       0     254      16352        0
              kenv    258      15      45        1029       0      30      15480        0
            mqnode    416       3      33           3       0      30      14976        0
              vmem   1856       1       7           1       0       8      14848        0
        SMR SHARED     24       7     504           7       0     254      12264        0
    ertt_txseginfo     40       0     303         239       0     254      12120        0
             KNOTE    160       0      75           8       0      62      12000        0
         malloc-16     16       5     745           6       0     254      12000        0
         malloc-16     16       7     743          39       0     254      12000        0
         malloc-16     16      58     692         338       0     254      12000        0
         malloc-16     16     192     558        1373       0     254      12000        0
         malloc-16     16      34     716         159       0     254      12000        0
         malloc-16     16     312     438       27100       0     254      12000        0
         malloc-16     16       6     744          22       0     254      12000        0
        malloc-384    384       0      30           1       0      30      11520        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-4096   4096       1       1           2       0       2       8192        0
           pcpu-16     16      14     498          14       0     254       8192        0
      vtnet_tx_hdr     24       0     334        2009       0     254       8016        0
       UMA Slabs 1    176       8      14           8       0      62       3872        0
        KMAP ENTRY     96      12      27          14       0       0       3744        0
       FFS1 dinode    128       0       0           0       0     126          0        0
           ada_ccb    272       0       0           0       0      30          0        0
             swblk    136       0       0           0       0      62          0        0
          swpctrie    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
        sctp_chunk    152       0       0           0       0     254          0        0
        sctp_raddr    736       0       0           0       0     254          0        0
         sctp_asoc   2288       0       0           0       0     254          0        0
           sctp_ep   1208       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    896       0       0           0       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
             ripcb     32       0       0           0       0     254          0        0
     udplite_inpcb     32       0       0           0       0     254          0        0
     udplite_inpcb    424       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
          sackhole     32       0       0           0       0     254          0        0
             tcptw     72       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
        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    608       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     32       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
    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-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-8192   8192       0       0           0       0       1          0        0
       malloc-4096   4096       0       0           0       0       2          0        0
        malloc-512    512       0       0           0       0      30          0        0
           pcpu-32     32       0       0           0       0     254          0        0
            pcpu-4      4       0       0           0       0     254          0        0
            fakepg    104       0       0           0       0     126          0        0
          UMA Hash    256       0       0           0       0      62          0        0

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/12/27 11:42 freebsd-src a82907ed131a e4f103c4 console log report syz C ci-freebsd-main Fatal trap NUM: page fault in tcp_usr_shutdown
2021/12/28 06:51 freebsd-src d11f81afd5a4 6b3c5e64 console log report ci-freebsd-main Fatal trap NUM: page fault in tcp_usr_shutdown
2021/12/27 20:26 freebsd-src d740faa30a4a 5140bd58 console log report ci-freebsd-main Fatal trap NUM: page fault in tcp_usr_shutdown
2021/12/27 11:25 freebsd-src a82907ed131a e4f103c4 console log report ci-freebsd-main Fatal trap NUM: page fault in tcp_usr_shutdown
2021/12/27 21:03 freebsd-src d740faa30a4a 5140bd58 console log report ci-freebsd-i386 Fatal trap NUM: page fault in tcp_usr_shutdown
* Struck through repros no longer work on HEAD.