syzbot


panic: filt_timerattach: periodic timer has a calculated zero timeout

Status: fixed on 2021/10/02 06:44
Reported-by: syzbot+1c8d1154f560b3930042@syzkaller.appspotmail.com
Fix commit: 2f4dbe279f6b kqueue: fix recent assertion
First crash: 493d, last: 493d

Sample crash report:
panic: filt_timerattach: periodic timer has a calculated zero timeout
cpuid = 1
time = 1633147672
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe00a5cd10b0
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe00a5cd1210
vpanic() at vpanic+0x2c5/frame 0xfffffe00a5cd12f0
panic() at panic+0xb5/frame 0xfffffe00a5cd13b0
filt_timerattach() at filt_timerattach+0x3c3/frame 0xfffffe00a5cd1490
kqueue_register() at kqueue_register+0xe5e/frame 0xfffffe00a5cd15d0
kqueue_kevent() at kqueue_kevent+0x218/frame 0xfffffe00a5cd19e0
kern_kevent_fp() at kern_kevent_fp+0xec/frame 0xfffffe00a5cd1a30
kern_kevent() at kern_kevent+0x157/frame 0xfffffe00a5cd1b10
kern_kevent_generic() at kern_kevent_generic+0x17c/frame 0xfffffe00a5cd1bf0
sys_kevent() at sys_kevent+0x1e6/frame 0xfffffe00a5cd1d30
amd64_syscall() at amd64_syscall+0x425/frame 0xfffffe00a5cd1f30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00a5cd1f30
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x289e7a, rsp = 0x7fffdfffdf08, rbp = 0x7fffdfffdf70 ---
KDB: enter: panic
[ thread pid 1877 tid 101333 ]
Stopped at      kdb_enter+0x6b: movq    $0,0x28df52a(%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          0x22aa3f31af28226
rdx                    0x3ffff
rbx                          0
rsp         0xfffffe00a5cd11f0
rbp         0xfffffe00a5cd1210
rsi                    0x40001
rdi         0xffffffff817be81a  vprintf+0x35a
r8                           0
r9          0xfffffe00a5cd0d28
r10                          0
r11         0xfffffe00a6e24c50
r12         0xfffffe00a6e24740
r13         0xfffffe00a5cd1201
r14         0xffffffff82c82d60  .str.18
r15         0xffffffff82c82d60  .str.18
rip         0xffffffff817b218b  kdb_enter+0x6b
rflags                    0x46
kdb_enter+0x6b: movq    $0,0x28df52a(%rip)
db> show proc
Process 1877 (syz-executor.1) at 0xfffffe009eaa3a70:
 state: NORMAL
 uid: 0  gids: 0, 0, 5
 parent: pid 786 at 0xfffffe009e4dc000
 ABI: FreeBSD ELF64
 flag: 0x10000080  flag2: 0
 arguments: /root/syz-executor.1 exec
 reaper: 0xfffffe0053d59538 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffffe009ea303e0
   (map 0xfffffe009ea303e0)
   (map.pmap 0xfffffe009ea304a0)
   (pmap 0xfffffe009ea30500)
 threads: 2
100147                   RunQ                                syz-executor.1
101333                   Run     CPU 1                       syz-executor.1
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 1877   786   786     0  R       (threaded)                  syz-executor.1
100147                   RunQ                                syz-executor.1
101333                   Run     CPU 1                       syz-executor.1
 1874   809   809     0  R       (threaded)                  syz-executor.2
100807                   Run     CPU 0                       syz-executor.2
101330                   RunQ                                syz-executor.2
 1136  1130  1136     0  Ss      select  0xfffffe00588b40c0  dhclient
 1133     1  1133     0  Ss      select  0xfffffe00588b4540  dhclient
 1130  1119   436    65  S       select  0xfffffe00588b4440  dhclient
 1119   436   436     0  S       wait    0xfffffe00588c3000  sh
 1069     1   786     0  S       uwait   0xfffffe009eaf5900  syz-executor.1
 1066     1   826     0  S       uwait   0xfffffe0058783200  syz-executor.3
 1064     1   809     0  S       uwait   0xfffffe005884b280  syz-executor.2
 1060     1   786     0  S       uwait   0xfffffe005884be80  syz-executor.1
 1058     1   826     0  S       uwait   0xfffffe0058783100  syz-executor.3
 1057     1   809     0  S       uwait   0xfffffe009eaf5c00  syz-executor.2
 1049     1   786     0  S       uwait   0xfffffe0058783300  syz-executor.1
 1047     1   809     0  S       uwait   0xfffffe0057016300  syz-executor.2
 1045     1   826     0  S       uwait   0xfffffe0058783800  syz-executor.3
 1032     1   809     0  S       uwait   0xfffffe005884db00  syz-executor.2
 1029     1   809     0  S       uwait   0xfffffe0058855e80  syz-executor.2
  826   780   826     0  Rs                                  syz-executor.3
  809   780   809     0  Rs                                  syz-executor.2
  786   780   786     0  Ss      nanslp  0xffffffff8405e581  syz-executor.1
  785   780   785     0  Rs                                  syz-executor.0
  780   778   778     0  S       (threaded)                  syz-fuzzer
100122                   S       uwait   0xfffffe0058855d80  syz-fuzzer
100123                   S       uwait   0xfffffe0057599180  syz-fuzzer
100124                   S       uwait   0xfffffe0057599280  syz-fuzzer
100125                   S       uwait   0xfffffe0057599380  syz-fuzzer
100126                   S       uwait   0xfffffe0058855c80  syz-fuzzer
100127                   S       uwait   0xfffffe0058850400  syz-fuzzer
100128                   S       uwait   0xfffffe0058850300  syz-fuzzer
100129                   S       uwait   0xfffffe0058855b80  syz-fuzzer
100130                   S       kqread  0xfffffe005759da00  syz-fuzzer
  778   776   778     0  Ss      pause   0xfffffe009e3f8b20  csh
  776   694   776     0  Ss      select  0xfffffe00588b4040  sshd
  760     1   760     0  Ss+     ttyin   0xfffffe005700f8b0  getty
  759     1   759     0  Ss+     ttyin   0xfffffe00575f48b0  getty
  758     1   758     0  Ss+     ttyin   0xfffffe00575f10b0  getty
  757     1   757     0  Ss+     ttyin   0xfffffe00575f18b0  getty
  756     1   756     0  Ss+     ttyin   0xfffffe00575ed0b0  getty
  755     1   755     0  Ss+     ttyin   0xfffffe00575ed8b0  getty
  754     1   754     0  Ss+     ttyin   0xfffffe00575e70b0  getty
  753     1   753     0  Ss+     ttyin   0xfffffe00575e78b0  getty
  752     1   752     0  Ss+     ttyin   0xfffffe005757b0b0  getty
  698     1   698     0  Ss      nanslp  0xffffffff8405e580  cron
  694     1   694     0  Ss      select  0xfffffe00588b41c0  sshd
  507     1   507     0  Ss      select  0xfffffe00588b49c0  syslogd
  436     1   436     0  Ss      wait    0xfffffe0058b52000  devd
  435     1   435    65  Ss      select  0xfffffe00588b4340  dhclient
  350     1   350     0  Ss      select  0xfffffe009e3148c0  dhclient
  347     1   347     0  Ss      select  0xfffffe00588b4ac0  dhclient
   23     0     0     0  DL      syncer  0xffffffff84186960  [syncer]
   22     0     0     0  DL      vlruwt  0xfffffe005877ca70  [vnlru]
   21     0     0     0  DL      (threaded)                  [bufdaemon]
100085                   D       qsleep  0xffffffff84184660  [bufdaemon]
100088                   D       -       0xffffffff83411f80  [bufspacedaemon-0]
100097                   D       sdflush 0xfffffe00081ea0e8  [/ worker]
   20     0     0     0  DL      psleep  0xffffffff841bcb80  [vmdaemon]
   19     0     0     0  DL      (threaded)                  [pagedaemon]
100083                   D       psleep  0xffffffff841b06b8  [dom0]
100089                   D       launds  0xffffffff841b06c4  [laundry: dom0]
100090                   D       umarcl  0xffffffff81eb6670  [uma]
   18     0     0     0  DL      -       0xffffffff83e14ba0  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff84ac16e0  [sctp_iterator]
   16     0     0     0  DL      pftm    0xffffffff8474b2f0  [pf purge]
   15     0     0     0  DL      -       0xffffffff8417f880  [soaiod4]
    9     0     0     0  DL      -       0xffffffff8417f880  [soaiod3]
    8     0     0     0  DL      -       0xffffffff8417f880  [soaiod2]
    7     0     0     0  DL      -       0xffffffff8417f880  [soaiod1]
    6     0     0     0  DL      (threaded)                  [cam]
100048                   D       -       0xffffffff83c9a3c0  [doneq0]
100049                   D       -       0xffffffff83c9a340  [async]
100082                   D       -       0xffffffff83c9a1c0  [scanner]
   14     0     0     0  DL      seqstat 0xfffffe0056ac6888  [sequencer 00]
    5     0     0     0  DL      crypto_ 0xfffffe0053e06880  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffffe0053e06830  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff841aa760  [crypto]
   13     0     0     0  DL      (threaded)                  [geom]
100039                   D       -       0xffffffff84031a80  [g_event]
100040                   D       -       0xffffffff84031ac0  [g_up]
100041                   D       -       0xffffffff84031b00  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100029                   D       -       0xfffffe0053df9b00  [thr_0]
100030                   D       -       0xfffffe0053df9b80  [thr_1]
100031                   D       -       0xffffffff84180c08  [alloc_0]
   12     0     0     0  WL      (threaded)                  [intr]
100011                   I                                   [swi6: task queue]
100012                   I                                   [swi6: Giant taskq]
100014                   I                                   [swi5: fast taskq]
100032                   I                                   [swi1: netisr 0]
100033                   I                                   [swi3: vm]
100034                   I                                   [swi4: clock (0)]
100035                   I                                   [swi4: clock (1)]
100036                   I                                   [swi1: hpts]
100037                   I                                   [swi1: hpts]
100050                   I                                   [irq24: virtio_pci0]
100051                   I                                   [irq25: virtio_pci0]
100052                   I                                   [irq26: virtio_pci0]
100053                   I                                   [irq27: virtio_pci0]
100054                   I                                   [irq28: virtio_pci1]
100055                   I                                   [irq29: virtio_pci1]
100056                   I                                   [irq30: virtio_pci1]
100057                   I                                   [irq31: virtio_pci1]
100058                   I                                   [irq32: virtio_pci1]
100063                   I                                   [irq10: virtio_pci2]
100065                   I                                   [irq1: atkbd0]
100066                   I                                   [irq12: psm0]
100067                   I                                   [swi0: uart uart++]
100075                   I                                   [swi1: pf send]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffffe0053d59538  [init]
   10     0     0     0  DL      audit_w 0xffffffff841ab700  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff84032980  [swapper]
100005                   D       -       0xfffffe0053df2e00  [softirq_0]
100006                   D       -       0xfffffe0053df2d00  [softirq_1]
100007                   D       -       0xfffffe0053df2c00  [if_io_tqg_0]
100008                   D       -       0xfffffe0053df2b00  [if_io_tqg_1]
100009                   D       -       0xfffffe0053df2a00  [if_config_tqg_0]
100010                   D       -       0xfffffe0053df2900  [deferred_unmount ta]
100013                   D       -       0xfffffe0053df2600  [thread taskq]
100015                   D       -       0xfffffe0053df2400  [linuxkpi_irq_wq]
100016                   D       -       0xfffffe0053df2300  [kqueue_ctx taskq]
100017                   D       -       0xfffffe0053df2200  [pci_hp taskq]
100018                   D       -       0xfffffe0053df2100  [aiod_kick taskq]
100019                   D       -       0xfffffe0053df2000  [inm_free taskq]
100020                   D       -       0xfffffe0053e06e00  [in6m_free taskq]
100021                   D       -       0xfffffe0053e06d00  [linuxkpi_short_wq_0]
100022                   D       -       0xfffffe0053e06d00  [linuxkpi_short_wq_1]
100023                   D       -       0xfffffe0053e06d00  [linuxkpi_short_wq_2]
100024                   D       -       0xfffffe0053e06d00  [linuxkpi_short_wq_3]
100025                   D       -       0xfffffe0053e06c00  [linuxkpi_long_wq_0]
100026                   D       -       0xfffffe0053e06c00  [linuxkpi_long_wq_1]
100027                   D       -       0xfffffe0053e06c00  [linuxkpi_long_wq_2]
100028                   D       -       0xfffffe0053e06c00  [linuxkpi_long_wq_3]
100038                   D       -       0xfffffe0053e06b00  [firmware taskq]
100042                   D       -       0xfffffe0053e06900  [crypto_0]
100043                   D       -       0xfffffe0053e06900  [crypto_1]
100059                   D       -       0xfffffe0053e06600  [vtnet0 rxq 0]
100060                   D       -       0xfffffe0053e06500  [vtnet0 txq 0]
100061                   D       -       0xfffffe0053e06400  [vtnet0 rxq 1]
100062                   D       -       0xfffffe0053e06300  [vtnet0 txq 1]
100064                   D       vtbslp  0xfffffe0056ff6e80  [virtio_balloon]
100068                   D       -       0xfffffe0053e06200  [mca taskq]
100073                   D       -       0xffffffff82c89ce1  [deadlkres]
100077                   D       -       0xfffffe005759dc00  [acpi_task_0]
100078                   D       -       0xfffffe005759dc00  [acpi_task_1]
100079                   D       -       0xfffffe005759dc00  [acpi_task_2]
100081                   D       -       0xfffffe0053e06700  [CAM taskq]
db> show all locks
Process 1874 (syz-executor.2) thread 0xfffffe009eaf0000 (100807)
exclusive sleep mutex umtxql (umtxql) r = 0 (0xffffffff840860c0) locked @ /syzkaller/managers/main/kernel/sys/kern/kern_umtx.c:1247
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
            devbuf         4213         4323K         4241
          tcp_hpts            6         3201K            6
         sysctloid        35175         2072K        35246
             vtbuf           24         1968K           46
              kobj          326         1304K          483
            newblk          123         1055K         2357
          vfscache            3         1025K            3
               pcb          221          741K         4007
          inodedep          477          691K         1054
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          146          287K         1960
          filedesc           36          281K         1959
            acpica         1674          184K        55237
         vnet_data            1          168K            1
              vmem            3          146K            4
           tidhash            3          141K            3
            linker          355          140K          399
           pagedep           24          134K          969
        tfo_ccache            1          128K            1
            dirrem          444          111K          987
            DEVFS1          108          108K          125
               sem            4          106K            4
               bus          986           80K         3474
         sctp_stro           77           77K          637
          mtx_pool            2           72K            2
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          509           64K          509
         sctp_atcl          168           63K         2636
          freefile          445           56K          973
              umtx          374           47K          374
           kdtrace          223           44K         3212
               BPF           22           36K           32
              temp           34           33K         2007
         hostcache            1           32K            1
               shm            1           32K            1
            DEVFS3          127           32K          137
               msg            4           30K            4
        gtaskqueue           18           26K           18
            kbdmux            6           22K            6
        DEVFS_RULE           56           20K           56
            ifaddr           67           19K           69
         ufs_mount            4           17K            5
              proc            3           17K            3
          routetbl          132           17K          421
               tty           16           16K           16
           lltable           50           16K           54
           ithread           99           16K           99
            bus-sc           34           15K         1691
         sctp_timw           53           14K           53
            KTRACE          100           13K          100
             ifnet            7           13K            7
       ether_multi          152           13K          162
              ksem           18           12K           41
              kenv           95           12K           95
      eventhandler          133           12K          133
         sctp_atky          245           11K         3326
         CAM queue            5           11K         1528
              GEOM           61           10K          487
              rman           84           10K          425
          freework           38           10K         1234
         in6_multi           65            9K           65
         bmsafemap            2            9K         1042
              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          237            8K          295
            kqueue           68            7K         1886
         taskqueue           63            7K           63
            sglist            5            7K            5
            DEVFSP           96            6K          175
           CAM DEV            3            6K          510
              cred           24            6K          231
            plimit           21            6K          364
       ufs_dirhash           24            5K           24
               UMA          270            5K          270
          pf_ifnet           10            5K           21
                vt           11            5K           11
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
          kcovinfo           64            4K           68
           pwddesc           64            4K         1867
           acpisem           28            4K           28
             hhook           15            4K           17
          freeblks           13            4K          993
           session           25            4K           39
            diradd           24            3K         1019
          indirdep           12            3K          419
          terminal           11            3K           11
         sctp_athm          168            3K         2661
         newdirblk           21            3K          956
          sctp_map          154            3K         1274
         proc-args           44            3K          591
           uidinfo            3            3K            8
             lockf           20            3K           33
        local_apic            1            2K            1
           io_apic            1            2K            1
       fpukern_ctx            2            2K            2
         ipsec-saq            2            2K            2
             selfd           31            2K        67793
            ip6ndp           12            2K           13
             mkdir           14            2K         1912
          sctp_ifa           13            2K           14
            Unitno           27            2K           47
           CAM XPT           22            2K          543
             xform           24            2K          179
          in_multi            6            2K            8
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
            select           10            2K           58
               msi            9            2K            9
             clone            9            2K            9
               tun            7            2K            7
           softdep            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
             nhops            6            1K            8
       vnodemarker            2            1K           28
      NFSD session            1            1K            1
       inpcbpolicy           28            1K          430
        CAM periph            4            1K          271
          sctp_ifn            6            1K           14
             ipsec            3            1K            3
               mld            6            1K            6
              igmp            6            1K            6
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           89
          pci_link           10            1K           10
               osd           24            1K          185
           tcp_fsb            5            1K           19
            crypto            4            1K           42
 encap_export_host           12            1K           12
         sctp_stri            1            1K          100
              pfil            4            1K            4
              cdev            2            1K            2
    chacha20random            1            1K            1
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
            vnodes            1            1K            4
           CAM SIM            2            1K            2
              ktls            1            1K            1
          procdesc            2            1K           12
            feeder            7            1K            7
           pf_osfp            2            1K            2
           tcpfunc            3            1K            3
        loginclass            3            1K            6
            prison            6            1K            6
       lkpikmalloc            5            1K            6
        aesni_data            2            1K            2
          nexusdev            8            1K            8
            apmdev            1            1K            1
          atkbddev            2            1K            2
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
          CAM path            4            1K         1034
          pmchooks            1            1K            1
            soname            4            1K         4510
          sctp_vrf            1            1K            1
              vnet            1            1K            1
           entropy            2            1K           39
          acpiintr            1            1K            1
               pmc            1            1K            1
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          filecaps            2            1K           90
          p1003.1b            1            1K            1
            tcp_do            0            0K            0
          chd data            0            0K            0
        cubic data            0            0K            0
        dctcp data            0            0K            8
         htcp data            0            0K            5
            mqdata            0            0K            0
          cdg data            0            0K            0
        vegas data            0            0K            8
        sctp_mcore            0            0K            0
        sctp_socko            0            0K         1279
         sctp_iter            0            0K           12
         sctp_mvrf            0            0K            0
         sctp_cpal            0            0K            0
         sctp_cmsg            0            0K            0
         sctp_stre            0            0K            0
         sctp_athi            0            0K            0
         sctp_a_it            0            0K           12
         sctp_aadr            0            0K            8
          pf_table            0            0K            0
           pf_rule            0            0K            2
           pf_altq            0            0K            0
           pf_temp            0            0K            0
      NFSCL diroff            0            0K            0
       NEWdirectio            0            0K            0
        madt_table            0            0K            2
          smartpqi            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
            NFS fh            0            0K            0
              iavf            0            0K            0
               ixl            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
        ice-resmgr            0            0K            0
         ice-osdep            0            0K            0
               ice            0            0K            0
             axgbe            0            0K            0
     NFSD srvcache            0            0K            0
       msdosfs_fat            0            0K            0
     msdosfs_mount            0            0K            0
      msdosfs_node            0            0K            0
            DEVFS4            0            0K            0
          xen_intr            0            0K            0
            DEVFS2            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     989     2484730       0     254   38129664        0
        RADIX NODE    144   19684     247      118039       0      62    2870064        0
              pbuf   2624       0     973           0       0       2    2553152        0
              mbuf    256    8894     676     3772835       0     254    2449920        0
          BUF TRIE    144     197   11563        1357       0      62    1693440        0
        malloc-384    384    4151       9        4151       0      30    1597440        0
        malloc-128    128   11631      56       15096       0     126    1495936        0
      mbuf_cluster   2048     675       1         675       0     254    1384448        0
       malloc-4096   4096     336       1        1124       0       2    1380352        0
       UMA Slabs 0    112   10590      27       10590       0     126    1189104        0
         vmem btag     56   16666      85       16666       0     254     938056        0
         FFS inode   1160     519      27        1493       0       8     633360        0
      malloc-65536  65536       6       1          14       0       1     458752        0
      malloc-16384  16384      20       6         980       0       1     425984        0
            lkpimm    168       1    2327           1       0      62     391104        0
          lkpicurr    168       2    2326           2       0      62     391104        0
         VM OBJECT    264    1271     109       28467       0      30     364320        0
            THREAD   1808     158      29        1333       0       8     338096        0
        256 Bucket   2048     151       9       25774       0       8     327680        0
       malloc-4096   4096      67       9        3026       0       2     311296        0
             VNODE    448     558      72        1534       0      30     282240        0
      malloc-32768  32768       2       6         389       0       1     262144        0
         malloc-64     64    3999      96        7908       0     254     262080        0
         malloc-16     16   14569     181       15304       0     254     236000        0
         MAP ENTRY     96    1854     498       99086       0     126     225792        0
            DEVCTL   1024      21     199         151       0       0     225280        0
       malloc-2048   2048      93      15        1920       0       8     221184        0
         sctp_asoc   2288      77      18         637       0     254     217360        0
        malloc-384    384     496      64        1073       0      30     215040        0
    ertt_txseginfo     40       1    5150       33213       0     254     206040        0
      malloc-65536  65536       1       2         137       0       1     196608        0
        malloc-256    256     650     100        1531       0      62     192000        0
         UMA Zones    768     242       2         242       0      16     187392        0
         malloc-32     32    5622     174        6782       0     254     185472        0
        malloc-256    256     123     582        2612       0      62     180480        0
       mbuf_packet    256     188     487        3469       0     254     172800        0
        malloc-128    128    1272      30       26233       0     126     166656        0
     FPU_save_area    832     160      38        6530       0      16     164736        0
           sctp_ep   1272      90      33        1917       0     254     156456        0
        malloc-128    128    1072     137        2481       0     126     154752        0
       malloc-1024   1024     135       5         156       0      16     143360        0
       FFS2 dinode    256     519      21        1493       0      62     138240        0
       S VFS Cache    104    1016     310        2016       0     126     137904        0
           VMSPACE   2544      41      13        1856       0       4     137376        0
      malloc-65536  65536       0       2           5       0       1     131072        0
      malloc-65536  65536       0       2          66       0       1     131072        0
      malloc-65536  65536       2       0           2       0       1     131072        0
        sctp_raddr    736      82      94         847       0     254     129536        0
          ksiginfo    112      65     979        5292       0     126     116928        0
            socket    960      64      56        3634       0     254     115200        0
              PROC   1336      63      18        1877       0       8     108216        0
       tcp_bbr_map    128      22     815        2438       0     126     107136        0
       malloc-1024   1024      87      13        1145       0      16     102400        0
         filedesc0   1072      64      20        1867       0       8      90048        0
          UMA Kegs    384     227       6         227       0      30      89472        0
        malloc-256    256     268      62        3958       0      62      84480        0
            clpbuf   2624       0      32          27       0      16      83968        0
        128 Bucket   1024      55      24         826       0      16      80896        0
        malloc-128    128     560      29        2770       0     126      75392        0
        malloc-384    384     170      20        2638       0      30      72960        0
      malloc-32768  32768       0       2         130       0       1      65536        0
      malloc-16384  16384       3       1          18       0       1      65536        0
         64 Bucket    512      77      43        4497       0      30      61440        0
        malloc-256    256     190      35        3572       0      62      57600        0
       malloc-4096   4096      12       2          15       0       2      57344        0
             g_bio    408       0     140       10998       0      30      57120        0
         malloc-64     64     433     449       68356       0     254      56448        0
        malloc-384    384     135       5         162       0      30      53760        0
       malloc-4096   4096      12       1          23       0       2      53248        0
       malloc-2048   2048       3      23         510       0       8      53248        0
       malloc-8192   8192       4       2          32       0       1      49152        0
         malloc-64     64     618     138       16192       0     254      48384        0
        malloc-128    128     312      60        2275       0     126      47616        0
         32 Bucket    256      56     124        3071       0      62      46080        0
       malloc-2048   2048       0      22         573       0       8      45056        0
           DIRHASH   1024      34       6          34       0      16      40960        0
       malloc-8192   8192       4       1           6       0       1      40960        0
       malloc-8192   8192       5       0           5       0       1      40960        0
       malloc-8192   8192       5       0           5       0       1      40960        0
            pcpu-8      8    4660     460        4878       0     254      40960        0
             tcpcb   1080      20      15         174       0     254      37800        0
             NAMEI   1024       0      32       17792       0      16      32768        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-16384  16384       0       2         160       0       1      32768        0
       malloc-2048   2048      14       2          16       0       8      32768        0
           pcpu-64     64     487      25         487       0     254      32768        0
         malloc-64     64     444      60         634       0     254      32256        0
         malloc-64     64     102     402        1397       0     254      32256        0
        malloc-256    256      68      52         336       0      62      30720        0
              pipe    744      20      20         373       0      16      29760        0
         TURNSTILE    136     188      22         188       0      62      28560        0
             KNOTE    160      29     146      122955       0      62      28000        0
             Files     80     246     104       11082       0     126      28000        0
            da_ccb    544       0      49        2874       0      16      26656        0
       malloc-8192   8192       3       0           3       0       1      24576        0
       malloc-2048   2048       8       4          50       0       8      24576        0
       malloc-1024   1024       2      22          50       0      16      24576        0
            ttyinq    160     135      15         300       0      62      24000        0
          8 Bucket     80      47     253        2552       0     126      24000        0
           ttyoutq    256      72      18         160       0      62      23040        0
        malloc-256    256      76      14         187       0      62      23040        0
       tcp_bbr_pcb    832      11      16          88       0      16      22464        0
       malloc-2048   2048       3       7          77       0       8      20480        0
               PWD     32      27     603        1045       0     254      20160        0
         malloc-32     32     176     454        3116       0     254      20160        0
         16 Bucket    144      58      82         437       0      62      20160        0
        sctp_chunk    152      66      64         343       0     254      19760        0
        SLEEPQUEUE     88     188      36         188       0     126      19712        0
       Mountpoints   2752       2       5           2       0       4      19264        0
        malloc-256    256      54      21         828       0      62      19200        0
        malloc-256    256      20      55        1427       0      62      19200        0
      malloc-16384  16384       1       0           1       0       1      16384        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-8192   8192       1       1         102       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-4096   4096       2       2           6       0       2      16384        0
       malloc-1024   1024      10       6         169       0      16      16384        0
        malloc-512    512       2      30         119       0      30      16384        0
      vtnet_tx_hdr     24       0     668     1246586       0     254      16032        0
         tcp_inpcb    496      20      12         174       0     254      15872        0
         udp_inpcb    496       6      26         180       0     254      15872        0
        malloc-384    384      29      11          56       0      30      15360        0
      tcp_rack_pcb    832       5      13          19       0      16      14976        0
       malloc-4096   4096       1       2           9       0       2      12288        0
       malloc-2048   2048       2       4          14       0       8      12288        0
       malloc-2048   2048       2       4         198       0       8      12288        0
       malloc-1024   1024       7       5        1094       0      16      12288        0
        malloc-512    512       1      23         100       0      30      12288        0
           rtentry    176      30      39          34       0      62      12144        0
         malloc-64     64     128      61        2114       0     254      12096        0
         malloc-32     32     116     262        1321       0     254      12096        0
         malloc-32     32     140     238        1204       0     254      12096        0
          2 Bucket     32      61     317         759       0     254      12096        0
              kenv    258      15      30        1031       0      30      11610        0
     routing nhops    256      27      18          34       0      62      11520        0
             unpcb    256      11      34        1258       0     254      11520        0
        malloc-384    384      21       9          24       0      30      11520        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-4096   4096       0       2           4       0       2       8192        0
       malloc-1024   1024       4       4          34       0      16       8192        0
        malloc-512    512       2      14          43       0      30       8192        0
        malloc-512    512      10       6          14       0      30       8192        0
        malloc-512    512       6      10          67       0      30       8192        0
              PGRP     88      25      67          39       0     126       8096        0
          rl_entry     40      48     154          48       0     254       8080        0
sctp_stream_msg_out    112      10      62          72       0     254       8064        0
        sctp_laddr     48     112      56         801       0     254       8064        0
      tcp_rack_map    112      15      57          43       0     126       8064        0
             udpcb     32       6     246         241       0     254       8064        0
              ertt     72      20      92         174       0     126       8064        0
         malloc-64     64      77      49          96       0     254       8064        0
         malloc-64     64      36      90          43       0     254       8064        0
         malloc-32     32      80     172          83       0     254       8064        0
         malloc-32     32      34     218         750       0     254       8064        0
         malloc-32     32      38     214        2747       0     254       8064        0
          4 Bucket     48       7     161          80       0     254       8064        0
         malloc-16     16      35     465        1178       0     254       8000        0
         malloc-16     16     288     212         491       0     254       8000        0
         malloc-16     16     208     292        1394       0     254       8000        0
         malloc-16     16     194     306        1419       0     254       8000        0
         malloc-16     16      24     476       25430       0     254       8000        0
         malloc-16     16     184     316        2698       0     254       8000        0
             ripcb    496       2      14          15       0     254       7936        0
     udplite_inpcb    496       0      16          61       0     254       7936        0
        malloc-128    128      22      40          91       0     126       7936        0
        malloc-128    128      43      19          66       0     126       7936        0
        malloc-128    128       3      59          28       0     126       7936        0
        sctp_readq    152       0      52          31       0     254       7904        0
           cryptop    280       0      28           5       0      30       7840        0
        malloc-384    384      11       9          11       0      30       7680        0
        malloc-384    384       1      19         341       0      30       7680        0
            cpuset    104       8      54           8       0     126       6448        0
 epoch_record pcpu    256       4      12           4       0      62       4096        0
       malloc-1024   1024       4       0           4       0      16       4096        0
        malloc-512    512       5       3           6       0      30       4096        0
           pcpu-16     16       7     249           7       0     254       4096        0
         hostcache     64       1      62           1       0     254       4032        0
          syncache    168       0      24           4       0     254       4032        0
         malloc-32     32      41      85         231       0     254       4032        0
         malloc-16     16      10     240          10       0     254       4000        0
       UMA Slabs 1    176       9      13           9       0      62       3872        0
            mqnode    416       3       6           3       0      30       3744        0
        KMAP ENTRY     96      12      27          14       0       0       3744        0
              vmem   1856       1       1           1       0       8       3712        0
           SMR CPU     32       3      60           3       0     254       2016        0
        SMR SHARED     24       3      60           3       0     254       1512        0
       FFS1 dinode    128       0       0           0       0     126          0        0
           ada_ccb    272       0       0           0       0      30          0        0
             swblk    136       0       0           0       0      62          0        0
          swpctrie    144       0       0           0       0      62          0        0
   cdg_qdiffsample     16       0       0           0       0     254          0        0
   sctp_asconf_ack     48       0       0           0       0     254          0        0
       sctp_asconf     40       0       0           0       0     254          0        0
   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_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    552       0       0           0       0      16          0        0
              AIOP     32       0       0           0       0     254          0        0
               AIO    208       0       0           0       0      62          0        0
        TMPFS node    224       0       0           0       0      62          0        0
           NCLNODE    592       0       0           0       0      16          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
     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
  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
      ktls_session    192       0       0           0       0      62          0        0
    mbuf_jumbo_16k  16384       0       0           0       0     254          0        0
     mbuf_jumbo_9k   9216       0       0           0       0     254          0        0
      audit_record   1280       0       0           0       0       8          0        0
         domainset     40       0       0           0       0     254          0        0
        MAC labels     40       0       0           0       0     254          0        0
            vnpbuf   2624       0       0           0       0      64          0        0
            mdpbuf   2624       0       0           0       0       3          0        0
           nfspbuf   2624       0       0           0       0      16          0        0
            swwbuf   2624       0       0           0       0       8          0        0
            swrbuf   2624       0       0           0       0      16          0        0
          umtx_shm     88       0       0           0       0     126          0        0
           umtx pi     96       0       0           0       0     126          0        0
rangeset pctrie nodes    144       0       0           0       0      62          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-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-4096   4096       0       0           0       0       2          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
           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 (12):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-freebsd-main 2021/10/02 04:07 freebsd-src 433be7f21fd1 db0f5787 console log report panic: filt_timerattach: periodic timer has a calculated zero timeout
ci-freebsd-main 2021/10/02 03:49 freebsd-src 433be7f21fd1 db0f5787 console log report panic: filt_timerattach: periodic timer has a calculated zero timeout
ci-freebsd-main 2021/10/02 02:48 freebsd-src 433be7f21fd1 db0f5787 console log report panic: filt_timerattach: periodic timer has a calculated zero timeout
ci-freebsd-main 2021/10/01 20:29 freebsd-src 433be7f21fd1 db0f5787 console log report panic: filt_timerattach: periodic timer has a calculated zero timeout
ci-freebsd-main 2021/10/01 18:59 freebsd-src 433be7f21fd1 db0f5787 console log report panic: filt_timerattach: periodic timer has a calculated zero timeout
ci-freebsd-main 2021/10/01 18:11 freebsd-src 433be7f21fd1 db0f5787 console log report panic: filt_timerattach: periodic timer has a calculated zero timeout
ci-freebsd-main 2021/10/01 17:19 freebsd-src 433be7f21fd1 db0f5787 console log report panic: filt_timerattach: periodic timer has a calculated zero timeout
ci-freebsd-i386 2021/10/02 04:36 freebsd-src a36230f75e0a db0f5787 console log report panic: filt_timerattach: periodic timer has a calculated zero timeout
ci-freebsd-i386 2021/10/02 03:35 freebsd-src a36230f75e0a db0f5787 console log report panic: filt_timerattach: periodic timer has a calculated zero timeout
ci-freebsd-i386 2021/10/02 00:56 freebsd-src a36230f75e0a db0f5787 console log report panic: filt_timerattach: periodic timer has a calculated zero timeout
ci-freebsd-i386 2021/10/01 19:05 freebsd-src a36230f75e0a db0f5787 console log report panic: filt_timerattach: periodic timer has a calculated zero timeout
ci-freebsd-i386 2021/10/01 16:55 freebsd-src a36230f75e0a db0f5787 console log report panic: filt_timerattach: periodic timer has a calculated zero timeout
* Struck through repros no longer work on HEAD.