Fatal trap 12: page fault in _callout_stop

Fatal trap 12: page fault in _callout_stop_safe
Status: fixed on 2020/11/19 21:16
Reported-by: syzbot+79569cd4d76636b2cc1c@syzkaller.appspotmail.com
Fix commit: a33fef5e25ac callout(9): Fix a race between CPU migration and callout_drain()
First crash: 548d, last: 548d

Sample crash report:
Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address	= 0x7
fault code		= supervisor read data, page not present
instruction pointer	= 0x20:0xffffffff81097aaa
stack pointer	        = 0x28:0xfffffe00255816f0
frame pointer	        = 0x28:0xfffffe0025581770
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= resume, IOPL = 0
current process		= 1122 (syz-executor2219171)
trap number		= 12
panic: page fault
cpuid = 1
time = 1605397642
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0025581350
vpanic() at vpanic+0x1c7/frame 0xfffffe00255813b0
panic() at panic+0x43/frame 0xfffffe0025581410
trap_fatal() at trap_fatal+0x4cd/frame 0xfffffe0025581490
trap_pfault() at trap_pfault+0xd4/frame 0xfffffe0025581500
trap() at trap+0x41d/frame 0xfffffe0025581620
calltrap() at calltrap+0x8/frame 0xfffffe0025581620
--- trap 0xc, rip = 0xffffffff81097aaa, rsp = 0xfffffe00255816f0, rbp = 0xfffffe0025581770 ---
_callout_stop_safe() at _callout_stop_safe+0x6da/frame 0xfffffe0025581770
filt_timerdetach() at filt_timerdetach+0x25/frame 0xfffffe0025581790
kqueue_drain() at kqueue_drain+0x394/frame 0xfffffe00255817e0
kqueue_close() at kqueue_close+0x9c/frame 0xfffffe0025581830
_fdrop() at _fdrop+0x3a/frame 0xfffffe0025581860
closef() at closef+0x2a1/frame 0xfffffe00255818f0
fdescfree_fds() at fdescfree_fds+0x125/frame 0xfffffe0025581950
fdescfree() at fdescfree+0x601/frame 0xfffffe0025581a30
exit1() at exit1+0x6c5/frame 0xfffffe0025581aa0
sys_sys_exit() at sys_sys_exit+0xd/frame 0xfffffe0025581ab0
amd64_syscall() at amd64_syscall+0x244/frame 0xfffffe0025581bf0
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0025581bf0
--- syscall (1, FreeBSD ELF64, sys_sys_exit), rip = 0x2910da, rsp = 0x7fffffffe9f8, rbp = 0x7fffffffea10 ---
KDB: enter: panic
[ thread pid 1122 tid 100105 ]
Stopped at      kdb_enter+0x67: movq    $0,0x147af76(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b
es                        0x3b
fs                        0x13
gs                        0x1b
ss                        0x28
rax                       0x12
rcx                       0x80
rdx         0xffffffff818cb183
rbx                          0
rsp         0xfffffe0025581330
rbp         0xfffffe0025581350
rsi                        0x1
rdi                          0
r8                           0
r9                  0xffffffff
r10         0xffffffff82196210  tcp_def_funcblk
r11         0xfffffe0003df4310
r12         0xffffffff820671c0  ddb_dbbe
r13                          0
r14         0xffffffff819733f1
r15         0xffffffff819733f1
rip         0xffffffff810e0607  kdb_enter+0x67
rflags                    0x86
kdb_enter+0x67: movq    $0,0x147af76(%rip)
db> show proc
Process 1122 (syz-executor2219171) at 0xfffff8003f035000:
 state: NORMAL
 uid: 0  gids: 0, 0, 5
 parent: pid 770 at 0xfffff8003f035520
 ABI: FreeBSD ELF64
 arguments: ./syz-executor221917190
 reaper: 0xfffff80004292520 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffffe00257ef9f0
   (map 0xfffffe00257ef9f0)
   (map.pmap 0xfffffe00257efab0)
   (pmap 0xfffffe00257efb10)
 threads: 1
100105                   Run     CPU 1                       syz-executor2219171
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 1122   770   768     0  RE      CPU 1                       syz-executor2219171
  770   768   768     0  R                                   syz-executor2219171
  768   766   768     0  Ss      pause   0xfffff8003f035ae8  csh
  766   682   766     0  Ss      select  0xfffff80026faccc0  sshd
  742     1   742     0  Ss+     ttyin   0xfffff80004697cb0  getty
  741     1   741     0  Ss+     ttyin   0xfffff800049910b0  getty
  740     1   740     0  Ss+     ttyin   0xfffff800049914b0  getty
  739     1   739     0  Ss+     ttyin   0xfffff800049918b0  getty
  738     1   738     0  Ss+     ttyin   0xfffff80004991cb0  getty
  737     1   737     0  Ss+     ttyin   0xfffff800049860b0  getty
  736     1   736     0  Ss+     ttyin   0xfffff800049864b0  getty
  735     1   735     0  Ss+     ttyin   0xfffff800049868b0  getty
  734     1   734     0  Ss+     ttyin   0xfffff80004986cb0  getty
  686     1   686     0  Ss      nanslp  0xffffffff8252ed01  cron
  682     1   682     0  Ss      select  0xfffff80026e17e40  sshd
  495     1   495     0  Ss      select  0xfffff80026e17dc0  syslogd
  424     1   424     0  Ss      select  0xfffff80026e17a40  devd
  423     1   423    65  Ss      select  0xfffff80004abb940  dhclient
  338     1   338     0  Ss      select  0xfffff80026e17d40  dhclient
  335     1   335     0  Ss      select  0xfffff80004abb740  dhclient
   23     0     0     0  DL      syncer  0xffffffff8261c0b8  [syncer]
   22     0     0     0  DL      vlruwt  0xfffff800049ad520  [vnlru]
   21     0     0     0  DL      (threaded)                  [bufdaemon]
100070                   D       qsleep  0xffffffff8261b180  [bufdaemon]
100077                   D       -       0xffffffff8200ac80  [bufspacedaemon-0]
100087                   D       sdflush 0xfffff80004a514e8  [/ worker]
   20     0     0     0  DL      psleep  0xffffffff82642648  [vmdaemon]
   19     0     0     0  DL      (threaded)                  [pagedaemon]
100068                   D       psleep  0xffffffff82636ab8  [dom0]
100075                   D       launds  0xffffffff82636ac4  [laundry: dom0]
100076                   D       umarcl  0xffffffff814eb9f0  [uma]
   18     0     0     0  DL      -       0xffffffff823634f8  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff82e16818  [sctp_iterator]
   16     0     0     0  DL      pftm    0xffffffff82c14390  [pf purge]
   15     0     0     0  DL      -       0xffffffff8261a75c  [soaiod4]
    9     0     0     0  DL      -       0xffffffff8261a75c  [soaiod3]
    8     0     0     0  DL      -       0xffffffff8261a75c  [soaiod2]
    7     0     0     0  DL      -       0xffffffff8261a75c  [soaiod1]
    6     0     0     0  DL      (threaded)                  [cam]
100034                   D       -       0xffffffff8223b240  [doneq0]
100067                   D       -       0xffffffff8223b110  [scanner]
    5     0     0     0  DL      crypto_ 0xfffff8000417eb90  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffff8000417eb30  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff82633fb0  [crypto]
   14     0     0     0  DL      seqstat 0xfffff80004302888  [sequencer 00]
   13     0     0     0  DL      (threaded)                  [geom]
100025                   D       -       0xffffffff8250e8a0  [g_event]
100026                   D       -       0xffffffff8250e8a8  [g_up]
100027                   D       -       0xffffffff8250e8b0  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100018                   D       -       0xfffff80004184d00  [thr_0]
100019                   D       -       0xfffff80004184d80  [thr_1]
   12     0     0     0  RL      (threaded)                  [intr]
100011                   I                                   [swi6: task queue]
100012                   I                                   [swi6: Giant taskq]
100016                   I                                   [swi5: fast taskq]
100020                   I                                   [swi1: netisr 0]
100021                   RunQ                                [swi4: clock (0)]
100022                   Run     CPU 0                       [swi4: clock (1)]
100023                   I                                   [swi3: vm]
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    0xfffff80004292520  [init]
   10     0     0     0  DL      audit_w 0xffffffff826344d0  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff8250ee30  [swapper]
100005                   D       -       0xfffff800042aee00  [if_io_tqg_0]
100006                   D       -       0xfffff800042aed00  [if_io_tqg_1]
100007                   D       -       0xfffff800042aec00  [if_config_tqg_0]
100008                   D       -       0xfffff800042aeb00  [softirq_0]
100009                   D       -       0xfffff800042aea00  [softirq_1]
100010                   D       -       0xfffff800042ae900  [inm_free taskq]
100013                   D       -       0xfffff800042ae600  [aiod_kick taskq]
100014                   D       -       0xfffff800042ae500  [thread taskq]
100015                   D       -       0xfffff800042ae400  [in6m_free taskq]
100017                   D       -       0xfffff800042ae200  [kqueue_ctx taskq]
100024                   D       -       0xfffff800042ae100  [firmware taskq]
100029                   D       -       0xfffff800042f5400  [crypto_0]
100030                   D       -       0xfffff800042f5400  [crypto_1]
100044                   D       -       0xfffff800044c3000  [vtnet0 rxq 0]
100045                   D       -       0xfffff8000467de00  [vtnet0 txq 0]
100046                   D       -       0xfffff8000467dd00  [vtnet0 rxq 1]
100047                   D       -       0xfffff8000467dc00  [vtnet0 txq 1]
100049                   D       vtbslp  0xfffff80004686480  [virtio_balloon]
100053                   D       -       0xfffff8000467d000  [mca taskq]
100058                   D       -       0xffffffff81d1b2e1  [deadlkres]
100063                   D       -       0xfffff80004987e00  [acpi_task_0]
100064                   D       -       0xfffff80004987e00  [acpi_task_1]
100065                   D       -       0xfffff80004987e00  [acpi_task_2]
100066                   D       -       0xfffff8000447dc00  [CAM taskq]
db> show all locks
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
            devbuf         4214         4339K         4242
          tcp_hpts            5         3201K            5
             vtbuf           24         1968K           46
         sysctloid        29217         1704K        29281
              kobj          336         1344K          496
            newblk          130         1057K          562
          vfscache            3         1025K            3
               pcb           21          537K           75
          inodedep            2          513K           85
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc           96          196K         1175
            acpica         1674          184K        52377
         vnet_data            1          168K            1
           tidhash            3          141K            3
           pagedep            2          129K           61
        tfo_ccache            1          128K            1
               sem            4          106K            4
            DEVFS1          101          101K          110
            linker          254           97K          282
               bus          979           79K         3034
          mtx_pool            2           72K            2
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          507           64K          507
              temp           18           33K         1517
         hostcache            1           32K            1
               shm            1           32K            1
               msg            4           30K            4
            DEVFS3          120           30K          130
           kdtrace          143           28K         2301
              umtx          216           27K          216
        gtaskqueue           18           26K           18
              vmem            3           22K            4
            kbdmux            6           22K            6
        DEVFS_RULE           56           20K           56
               BPF           10           18K           10
         ufs_mount            5           17K            6
              proc            3           17K            3
               tty           16           16K           16
           ithread           99           16K           99
            bus-sc           30           14K         1415
            KTRACE          100           13K          100
            ifaddr           32           12K           32
              kenv           92           12K           92
      eventhandler          132           12K          132
              GEOM           60           10K          489
              rman           82           10K          423
         bmsafemap            2            9K           44
              UART           12            9K           12
           devstat            4            9K            4
               rpc            2            8K            2
             shmfd            1            8K            1
       pfs_vncache            1            8K            1
         pfs_nodes           20            8K           20
     audit_evclass          233            8K          291
           CAM DEV            3            6K          510
            sglist            5            6K            5
         CAM queue            5            6K         1528
         taskqueue           48            6K           48
              cred           20            5K          243
       ufs_dirhash           24            5K           24
             ifnet            3            5K            3
                vt           11            5K           11
               UMA          254            5K          254
           memdesc            1            4K            1
               MCA           32            4K           32
            plimit           16            4K          338
          filedesc            1            4K            1
             evdev            4            4K            4
            kqueue           47            4K         2181
          routetbl           15            4K           15
             hhook           13            4K           13
       ether_multi           40            4K           50
           lltable           11            4K           11
          pf_ifnet            5            3K            6
         in6_multi           25            3K           25
          terminal           11            3K           11
           acpisem           22            3K           22
           session           19            3K           32
              pgrp           19            3K           32
           uidinfo            3            3K            9
             selfd           33            3K        13064
        local_apic            1            2K            1
           io_apic            1            2K            1
         ipsec-saq            2            2K            2
             lockf           16            2K           26
            select           13            2K           13
           CAM XPT           22            2K          543
         proc-args           36            2K          474
            Unitno           25            2K           37
       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           20
      NFSD session            1            1K            1
        CAM periph            4            1K          271
             ipsec            3            1K            3
             nhops            6            1K            6
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           89
          pci_link           10            1K           10
          sctp_ifa            5            1K            7
            ip6ndp            4            1K            5
 encap_export_host           12            1K           12
            crypto            3            1K            3
          in_multi            2            1K            4
              pfil            4            1K            4
           CAM SIM            2            1K            2
              cdev            2            1K            2
    chacha20random            1            1K            1
               osd            3            1K            9
          sctp_ifn            2            1K            7
          indirdep            1            1K            3
               mld            2            1K            2
              igmp            2            1K            2
            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
       inpcbpolicy            6            1K          129
        loginclass            3            1K            7
            prison            6            1K            6
     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
          freework            1            1K           26
            diradd            1            1K           36
           tcpfunc            2            1K            2
          procdesc            1            1K            6
          pmchooks            1            1K            1
            DEVFSP            2            1K            2
            soname            4            1K         3053
               tun            3            1K            3
          nexusdev            5            1K            5
          sctp_vrf            1            1K            1
           entropy            2            1K           35
              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
          filecaps            1            1K           63
        sctp_mcore            0            0K            0
        sctp_socko            0            0K            0
         sctp_iter            0            0K            3
         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            3
         sctp_aadr            0            0K            0
         sctp_stro            0            0K            0
         sctp_stri            0            0K            0
          sctp_map            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
            nvlist            0            0K            0
          SCSI ENC            0            0K            0
           SCSI sa            0            0K            0
        madt_table            0            0K            2
         scsi_pass            0            0K            0
         ciss_data            0            0K            0
          smartpqi            0            0K            0
            pvscsi            0            0K            0
           ath_hal            0            0K            0
            athdev            0            0K            0
           ata_pci            0            0K            0
           ata_dma            0            0K            0
       ata_generic            0            0K            0
               amr            0            0K            0
           scsi_da            0            0K           69
              iavf            0            0K            0
               ixl            0            0K            0
            ata_da            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
        ice-resmgr            0            0K            0
         ice-osdep            0            0K            0
               ice            0            0K            0
             axgbe            0            0K            0
       fpukern_ctx            0            0K            0
               agp            0            0K            0
          xen_intr            0            0K            0
           xen_hvm            0            0K            0
         legacydrv            0            0K            0
            qpidrv            0            0K            0
           nvme_da            0            0K            0
      dmar_idpgtbl            0            0K            0
          dmar_dom            0            0K            0
          dmar_ctx            0            0K            0
           acpipwr            0            0K            0
            twsbuf            0            0K            0
      twe_commands            0            0K            0
              isci            0            0K            0
      iommu_dmamap            0            0K            0
      twa_commands            0            0K            0
     hyperv_socket            0            0K            0
           bxe_ilt            0            0K            0
            xenbus            0            0K            0
       tcp_log_dev            0            0K            0
      midi buffers            0            0K            0
             mixer            0            0K            0
     vm_fictitious            0            0K            0
              ac97            0            0K            0
             hdacc            0            0K            0
              hdac            0            0K            0
              hdaa            0            0K            0
         acpi_perf            0            0K            0
         acpicmbat            0            0K            0
       SIIS driver            0            0K            0
           CAM CCB            0            0K         2021
           UMAHash            0            0K            0
         vm_pgdata            0            0K            0
           jblocks            0            0K            0
          savedino            0            0K            8
          sentinel            0            0K            0
            jfsync            0            0K            0
            jtrunc            0            0K            0
             sbdep            0            0K            5
           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
         newdirblk            0            0K            8
            dirrem            0            0K           28
             mkdir            0            0K           16
          freefile            0            0K           26
          freeblks            0            0K           25
          freefrag            0            0K            7
        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
             xform            0            0K            0
               NLM            0            0K            0
    ipsec-spdcache            0            0K            0
         ipsec-reg            0            0K            0
        ipsec-misc            0            0K            0
      ipsecrequest            0            0K            0
            ip6opt            0            0K            3
       ip6_msource            0            0K            0
      ip6_moptions            0            0K            0
       in6_mfilter            0            0K            0
             frag6            0            0K            0
            tcplog            0            0K            0
               PUC            0            0K            0
               LRO            0            0K            0
      newreno data            0            0K            0
        ip_msource            0            0K            0
       ip_moptions            0            0K            0
        in_mfilter            0            0K            0
              ipid            0            0K            0
         80211scan            0            0K            0
      80211ratectl            0            0K            0
        80211power            0            0K            0
       80211nodeie            0            0K            0
         80211node            0            0K            0
      80211mesh_gt            0            0K            0
      80211mesh_rt            0            0K            0
         80211perr            0            0K            0
         80211prep            0            0K            0
         80211preq            0            0K            0
          80211dfs            0            0K            0
       80211crypto            0            0K            0
          80211vap            0            0K            0
             iflib            0            0K            0
              vlan            0            0K            0
               gif            0            0K            0
           ifdescr            0            0K            0
              zlib            0            0K            0
           fadvise            0            0K            0
           VN POLL            0            0K            0
          ppbusdev            0            0K            0
            statfs            0            0K          200
     namei_tracker            0            0K            0
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agtiapi_MemAlloc malloc            0            0K            0
    osti_cacheable            0            0K            0
          tempbuff            0            0K            0
          tempbuff            0            0K            0
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
     STLock malloc            0            0K            0
          CCB List            0            0K            0
            sr_iov            0            0K            0
               OCS            0            0K            0
               OCS            0            0K            0
              nvme            0            0K            0
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              sbuf            0            0K          288
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
      mbuf_cluster   2048    9593       1        9593       0     254   19648512        0
       mbuf_packet    256    8192    1273       25591       0     254    2423040        0
          BUF TRIE    144     167   13301         652       0      62    1939392        0
        malloc-384    384    4188       2        4461       0      30    1608960        0
       malloc-4096   4096     380       4        1619       0       2    1572864        0
        malloc-128    128    9594     171        9987       0     126    1249920        0
              pbuf    832       0     969           0       0       2     806208        0
       UMA Slabs 0    112    5571       6        5571       0     126     624624        0
         FFS inode   1128     486      18         512       0       8     568512        0
      malloc-65536  65536       4       2         157       0       1     393216        0
        RADIX NODE    144    1982     199       24005       0      62     314064        0
             VNODE    488     515      37         543       0      30     269376        0
         VM OBJECT    264     855      75       15228       0      30     245520        0
        256 Bucket   2048     100      18        7153       0       8     241664        0
            DEVCTL   1024       0     208         109       0       0     212992        0
         malloc-16     16   12224     276       12288       0     254     200000        0
         malloc-64     64    2975     112        4078       0     254     197568        0
            THREAD   1792     105       3         105       0       8     193536        0
              mbuf    256     385     320        3194       0     254     180480        0
         UMA Zones    768     226       3         226       0      16     175872        0
        malloc-256    256     359     301        1669       0      62     168960        0
        malloc-128    128    1191      49       24464       0     126     158720        0
         malloc-32     32    4764     150        5855       0     254     157248        0
       malloc-1024   1024     114      18        1163       0      16     135168        0
      malloc-65536  65536       2       0           2       0       1     131072        0
      malloc-65536  65536       1       1           9       0       1     131072        0
       FFS2 dinode    256     486      24         512       0      62     130560        0
          ksiginfo    112      35    1009          55       0     126     116928        0
         MAP ENTRY     96     772     446       41039       0     126     116928        0
       S VFS Cache    104     969      84        1013       0     126     109512        0
         vmem btag     56    1652      64        1652       0     254      96096        0
       malloc-2048   2048       6      40        2218       0       8      94208        0
        malloc-128    128     669      44        1604       0     126      91264        0
       malloc-8192   8192       7       4         124       0       1      90112        0
      malloc-16384  16384       5       0         144       0       1      81920        0
          UMA Kegs    384     212       1         212       0      30      81792        0
           VMSPACE   2544      21       9        1101       0       4      76320        0
        malloc-128    128     553      36        3527       0     126      75392        0
        128 Bucket   1024      36      31        1586       0      16      68608        0
         filedesc0   1080      44      19        1123       0       8      68040        0
              PROC   1312      43       8        1122       0       8      66912        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
             g_bio    408       0     160        5738       0      30      65280        0
       malloc-4096   4096      13       2          25       0       2      61440        0
        malloc-256    256      58     137         489       0      62      49920        0
       malloc-2048   2048       7      17         559       0       8      49152        0
         malloc-64     64     563     130        2758       0     254      44352        0
         32 Bucket    256      41     124         915       0      62      42240        0
       malloc-8192   8192       5       0           5       0       1      40960        0
         malloc-64     64     540      90         766       0     254      40320        0
            clpbuf    832       0      48         132       0      16      39936        0
        malloc-256    256     119      31        1200       0      62      38400        0
           DIRHASH   1024      34       2          34       0      16      36864        0
             NAMEI   1024       0      36       11598       0      16      36864        0
       malloc-4096   4096       9       0           9       0       2      36864        0
   mbuf_jumbo_page   4096       0       8          10       0     254      32768        0
      malloc-32768  32768       0       1         112       0       1      32768        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-16384  16384       2       0           2       0       1      32768        0
        malloc-512    512       4      60         373       0      30      32768        0
           pcpu-64     64     451      61         451       0     254      32768        0
            pcpu-8      8    3859     237        3863       0     254      32768        0
         64 Bucket    512      54      10         624       0      30      32768        0
       malloc-4096   4096       5       2         457       0       2      28672        0
       malloc-4096   4096       6       1           9       0       2      28672        0
        malloc-384    384      10      60          93       0      30      26880        0
            socket    944      14      14        1186       0     254      26432        0
       malloc-8192   8192       2       1           4       0       1      24576        0
          4 Bucket     48      11     493        9506       0     254      24192        0
            ttyinq    160     135      15         300       0      62      24000        0
             tcpcb   1048       3      19           7       0     254      23056        0
           ttyoutq    256      72      18         160       0      62      23040        0
        malloc-384    384      53       7          72       0      30      23040        0
       malloc-1024   1024      16       4          19       0      16      20480        0
       malloc-1024   1024      16       4          16       0      16      20480        0
             KNOTE    160       1     124         359       0      62      20000        0
             Files     80      66     184        6695       0     126      20000        0
       Mountpoints   2752       2       5           2       0       4      19264        0
        malloc-256    256      22      53         297       0      62      19200        0
              pipe    744       6      19         280       0      16      18600        0
         TURNSTILE    136     109      17         109       0      62      17136        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
         malloc-32     32     257     247        2946       0     254      16128        0
          2 Bucket     32      44     460        9777       0     254      16128        0
          8 Bucket     80      40     160        5163       0     126      16000        0
        malloc-128    128     103      21         124       0     126      15872        0
       malloc-2048   2048       5       1           6       0       8      12288        0
       malloc-1024   1024       7       5           7       0      16      12288        0
         malloc-64     64     123      66         129       0     254      12096        0
         malloc-16     16     493     257        1888       0     254      12000        0
        malloc-128    128      71      22          84       0     126      11904        0
         udp_inpcb    488       2      22         118       0     254      11712        0
        malloc-384    384      14      16          14       0      30      11520        0
        malloc-256    256      39       6         447       0      62      11520        0
        SLEEPQUEUE     88     109      19         109       0     126      11264        0
       malloc-4096   4096       0       2         200       0       2       8192        0
       malloc-4096   4096       2       0           2       0       2       8192        0
       malloc-2048   2048       3       1           3       0       8       8192        0
       malloc-2048   2048       2       2           2       0       8       8192        0
       malloc-2048   2048       0       4         256       0       8       8192        0
       malloc-1024   1024       4       4           8       0      16       8192        0
       malloc-1024   1024       5       3           5       0      16       8192        0
        malloc-512    512       5      11         672       0      30       8192        0
        malloc-512    512       9       7           9       0      30       8192        0
        malloc-512    512       2      14           3       0      30       8192        0
           rtentry    176      14      32          18       0      62       8096        0
          rl_entry     40      27     175          27       0     254       8080        0
             udpcb     32       2     250         118       0     254       8064        0
               PWD     32      10     242         100       0     254       8064        0
         malloc-64     64      15     111       12962       0     254       8064        0
         malloc-64     64      40      86       13097       0     254       8064        0
         malloc-64     64       3     123          20       0     254       8064        0
         malloc-64     64       2     124          24       0     254       8064        0
         malloc-32     32      38     214         303       0     254       8064        0
         malloc-32     32       6     246          18       0     254       8064        0
         malloc-32     32     176      76        1603       0     254       8064        0
         malloc-32     32      16     236          63       0     254       8064        0
         malloc-32     32      11     241          51       0     254       8064        0
         malloc-32     32      17     235          35       0     254       8064        0
         16 Bucket    144      31      25         196       0      62       8064        0
      vtnet_tx_hdr     24       0     334        1892       0     254       8016        0
         malloc-16     16       1     499         192       0     254       8000        0
         malloc-16     16      10     490          49       0     254       8000        0
         malloc-16     16      31     469       23593       0     254       8000        0
         malloc-16     16       8     492         120       0     254       8000        0
        malloc-128    128       4      58         198       0     126       7936        0
        malloc-128    128      11      51         275       0     126       7936        0
         tcp_inpcb    488       3      13           7       0     254       7808        0
              kenv    258       3      27         997       0      30       7740        0
     routing nhops    256      11      19          18       0      62       7680        0
             unpcb    256       7      23        1040       0     254       7680        0
        malloc-384    384      12       8          13       0      30       7680        0
        malloc-256    256       1      29         360       0      62       7680        0
        malloc-256    256      14      16          19       0      62       7680        0
        malloc-256    256       8      22         265       0      62       7680        0
     FPU_save_area    832       1       8           1       0      16       7488        0
            cpuset    104       7      55           7       0     126       6448        0
 epoch_record pcpu    256       4      12           4       0      62       4096        0
       malloc-4096   4096       0       1           2       0       2       4096        0
       malloc-2048   2048       2       0           2       0       8       4096        0
       malloc-2048   2048       2       0           2       0       8       4096        0
       malloc-1024   1024       1       3           1       0      16       4096        0
        malloc-512    512       2       6           2       0      30       4096        0
           pcpu-16     16       7     249           7       0     254       4096        0
        sctp_laddr     48       0      84           4       0     254       4032        0
         hostcache     96       1      41           1       0     254       4032        0
          syncache    168       0      24           5       0     254       4032        0
         malloc-16     16       1     249           1       0     254       4000        0
         malloc-16     16       3     247           4       0     254       4000        0
             ripcb    488       1       7           4       0     254       3904        0
       UMA Slabs 1    176       7      15           7       0      62       3872        0
        malloc-384    384       1       9           1       0      30       3840        0
        malloc-384    384       1       9           1       0      30       3840        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           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   1280       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    296       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_bbr_pcb    832       0       0           0       0      16          0        0
       tcp_bbr_map    128       0       0           0       0     126          0        0
     udplite_inpcb    488       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     88       0       0           0       0     254          0        0
               ipq     56       0       0           0       0     254          0        0
    IPsec SA lft_c     16       0       0           0       0     254          0        0
            itimer    352       0       0           0       0      30          0        0
            AIOLIO    272       0       0           0       0      30          0        0
             AIOCB    744       0       0           0       0      16          0        0
              AIOP     32       0       0           0       0     254          0        0
               AIO    208       0       0           0       0      62          0        0
        TMPFS node    224       0       0           0       0      62          0        0
           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
    crypto_session     72       0       0           0       0     126          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     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    832       0       0           0       0      62          0        0
            mdpbuf    832       0       0           0       0       4          0        0
           nfspbuf    832       0       0           0       0      16          0        0
            swwbuf    832       0       0           0       0       8          0        0
            swrbuf    832       0       0           0       0      16          0        0
          umtx_shm     88       0       0           0       0     126          0        0
           umtx pi     96       0       0           0       0     126          0        0
rangeset pctrie nodes    144       0       0           0       0      62          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-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-1024   1024       0       0           0       0      16          0        0
        malloc-512    512       0       0           0       0      30          0        0
        malloc-512    512       0       0           0       0      30          0        0
        malloc-512    512       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 (1):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-freebsd-main	2020/11/14 23:49	freebsd	5374f9a26da6	1bf9a662		log	report	syz	C