syzbot


Fatal trap 18: integer divide fault in realtimer_expire_l

Status: fixed on 2021/05/14 02:24
Reported-by: syzbot+5ab360bd3d3e3c5a6e0e@syzkaller.appspotmail.com
Fix commit: 8b3c4231abf0 posix timers: Check for overflow when converting to ns
First crash: 662d, last: 634d

Sample crash report:
Fatal trap 18: integer divide fault while in kernel mode
cpuid = 1; apic id = 01
instruction pointer	= 0x20:0xffffffff810dec86
stack pointer	        = 0x0:0xfffffe000377e980
frame pointer	        = 0x0:0xfffffe000377ea00
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 12 (swi4: clock (0))
trap number		= 18
panic: integer divide fault
cpuid = 1
time = 1618483457
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe000377e650
vpanic() at vpanic+0x1c7/frame 0xfffffe000377e6b0
panic() at panic+0x43/frame 0xfffffe000377e710
trap_fatal() at trap_fatal+0x4cd/frame 0xfffffe000377e790
trap() at trap+0xf7/frame 0xfffffe000377e8b0
calltrap() at calltrap+0x8/frame 0xfffffe000377e8b0
--- trap 0x12, rip = 0xffffffff810dec86, rsp = 0xfffffe000377e980, rbp = 0xfffffe000377ea00 ---
realtimer_expire_l() at realtimer_expire_l+0x2e6/frame 0xfffffe000377ea00
softclock_call_cc() at softclock_call_cc+0x1f7/frame 0xfffffe000377ead0
softclock() at softclock+0xb0/frame 0xfffffe000377eb10
ithread_loop() at ithread_loop+0x33f/frame 0xfffffe000377ebb0
fork_exit() at fork_exit+0xb3/frame 0xfffffe000377ebf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe000377ebf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 12 tid 100031 ]
Stopped at      kdb_enter+0x67: movq    $0,0x143c72e(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b
es                        0x3b
fs                        0x13
gs                        0x1b
ss                           0
rax                       0x12
rcx                       0x80
rdx         0xffffffff819b05ed
rbx                          0
rsp         0xfffffe000377e630
rbp         0xfffffe000377e650
rsi                        0x1
rdi                          0
r8                           0
r9          0x8080808080808080
r10         0xfffffe000377e520
r11              0x1fffcfff59c
r12         0xffffffff82067ac0  ddb_dbbe
r13                          0
r14         0xffffffff81a6082c
r15         0xffffffff81a6082c
rip         0xffffffff8112b9d7  kdb_enter+0x67
rflags                    0x86
kdb_enter+0x67: movq    $0,0x143c72e(%rip)
db> show proc
Process 12 (intr) at 0xfffff80004474a70:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff8251b630
 ABI: null
 flag: 0x10000284  flag2: 0
 reaper: 0xffffffff8251b630 reapsubtree: 12
 sigparent: 20
 vmspace: 0xffffffff8251c2a0
   (map 0xffffffff8251c2a0)
   (map.pmap 0xffffffff8251c360)
   (pmap 0xffffffff8251c3c0)
 threads: 23
100014                   I                                   [swi6: task queue]
100016                   I                                   [swi6: Giant taskq]
100018                   I                                   [swi5: fast taskq]
100029                   I                                   [swi1: netisr 0]
100030                   I                                   [swi3: vm]
100031                   Run     CPU 1                       [swi4: clock (0)]
100032                   I                                   [swi4: clock (1)]
100045                   I                                   [irq24: virtio_pci0]
100046                   I                                   [irq25: virtio_pci0]
100047                   I                                   [irq26: virtio_pci0]
100048                   I                                   [irq27: virtio_pci0]
100049                   I                                   [irq28: virtio_pci1]
100050                   I                                   [irq29: virtio_pci1]
100051                   I                                   [irq30: virtio_pci1]
100052                   I                                   [irq31: virtio_pci1]
100053                   I                                   [irq32: virtio_pci1]
100058                   I                                   [irq10: virtio_pci2]
100060                   I                                   [irq1: atkbd0]
100061                   I                                   [irq12: psm0]
100062                   I                                   [swi0: uart uart++]
100070                   I                                   [swi1: pf send]
100083                   I                                   [swi1: hpts]
100084                   I                                   [swi1: hpts]
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
  937   789   787     0  LE     *itimer  0xfffff80004fdd6c0  syz-executor0765289
  789   787   787     0  L      *process 0xfffff8000487a540  syz-executor0765289
  787   785   787     0  Ss      pause   0xfffff800163f30b0  csh
  785   694   785     0  Ss      select  0xfffff800046cea40  sshd
  760     1   760     0  Ss+     ttyin   0xfffff80004865cb0  getty
  759     1   759     0  Ss+     ttyin   0xfffff80004b930b0  getty
  758     1   758     0  Ss+     ttyin   0xfffff80004b934b0  getty
  757     1   757     0  Ss+     ttyin   0xfffff80004b938b0  getty
  756     1   756     0  Ss+     ttyin   0xfffff80004b93cb0  getty
  755     1   755     0  Ss+     ttyin   0xfffff80004b9d0b0  getty
  754     1   754     0  Ss+     ttyin   0xfffff80004b9d4b0  getty
  753     1   753     0  Ss+     ttyin   0xfffff80004b9d8b0  getty
  752     1   752     0  Ss+     ttyin   0xfffff80004b9dcb0  getty
  750     1    24     0  S+      piperd  0xfffff80004e445d0  logger
  749   748    24     0  S+      nanslp  0xffffffff8253b860  sleep
  748     1    24     0  S+      wait    0xfffff800163d4538  sh
  698     1   698     0  Ss      nanslp  0xffffffff8253b860  cron
  694     1   694     0  Ss      select  0xfffff80004aff8c0  sshd
  507     1   507     0  Ss      select  0xfffff80004aff940  syslogd
  436     1   436     0  Ss      select  0xfffff80004affec0  devd
  435     1   435    65  Ss      select  0xfffff80004affcc0  dhclient
  350     1   350     0  Ss      select  0xfffff800046ced40  dhclient
  347     1   347     0  Ss      select  0xfffff80004affbc0  dhclient
   23     0     0     0  DL      vlruwt  0xfffff80004dae538  [vnlru]
   22     0     0     0  DL      syncer  0xffffffff8262acd0  [syncer]
   21     0     0     0  DL      (threaded)                  [bufdaemon]
100080                   D       qsleep  0xffffffff82629d80  [bufdaemon]
100085                   D       -       0xffffffff8200ae00  [bufspacedaemon-0]
100096                   D       sdflush 0xfffff80004e0f4e8  [/ worker]
   20     0     0     0  DL      psleep  0xffffffff82651b88  [vmdaemon]
   19     0     0     0  DL      (threaded)                  [pagedaemon]
100078                   D       psleep  0xffffffff82645ff8  [dom0]
100086                   D       launds  0xffffffff82646004  [laundry: dom0]
100087                   D       umarcl  0xffffffff815b8f00  [uma]
   18     0     0     0  DL      -       0xffffffff8236fbe8  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff82d04818  [sctp_iterator]
   16     0     0     0  DL      pftm    0xffffffff82e153c0  [pf purge]
   15     0     0     0  DL      -       0xffffffff826273dc  [soaiod4]
    9     0     0     0  DL      -       0xffffffff826273dc  [soaiod3]
    8     0     0     0  DL      -       0xffffffff826273dc  [soaiod2]
    7     0     0     0  DL      -       0xffffffff826273dc  [soaiod1]
    6     0     0     0  DL      (threaded)                  [cam]
100043                   D       -       0xffffffff822470c0  [doneq0]
100044                   D       -       0xffffffff82247040  [async]
100077                   D       -       0xffffffff82246f10  [scanner]
   14     0     0     0  DL      seqstat 0xfffff80004510888  [sequencer 00]
    5     0     0     0  DL      crypto_ 0xfffff800044ae280  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffff800044ae230  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff82643520  [crypto]
   13     0     0     0  DL      (threaded)                  [geom]
100034                   D       -       0xffffffff8251b0a0  [g_event]
100035                   D       -       0xffffffff8251b0a8  [g_up]
100036                   D       -       0xffffffff8251b0b0  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100027                   D       -       0xfffff80004344b00  [thr_0]
100028                   D       -       0xfffff80004344b80  [thr_1]
   12     0     0     0  RL      (threaded)                  [intr]
100014                   I                                   [swi6: task queue]
100016                   I                                   [swi6: Giant taskq]
100018                   I                                   [swi5: fast taskq]
100029                   I                                   [swi1: netisr 0]
100030                   I                                   [swi3: vm]
100031                   Run     CPU 1                       [swi4: clock (0)]
100032                   I                                   [swi4: clock (1)]
100045                   I                                   [irq24: virtio_pci0]
100046                   I                                   [irq25: virtio_pci0]
100047                   I                                   [irq26: virtio_pci0]
100048                   I                                   [irq27: virtio_pci0]
100049                   I                                   [irq28: virtio_pci1]
100050                   I                                   [irq29: virtio_pci1]
100051                   I                                   [irq30: virtio_pci1]
100052                   I                                   [irq31: virtio_pci1]
100053                   I                                   [irq32: virtio_pci1]
100058                   I                                   [irq10: virtio_pci2]
100060                   I                                   [irq1: atkbd0]
100061                   I                                   [irq12: psm0]
100062                   I                                   [swi0: uart uart++]
100070                   I                                   [swi1: pf send]
100083                   I                                   [swi1: hpts]
100084                   I                                   [swi1: hpts]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   Run     CPU 0                       [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffff80004457538  [init]
   10     0     0     0  DL      audit_w 0xffffffff82643a30  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff8251b630  [swapper]
100005                   D       -       0xfffff80004089800  [softirq_0]
100006                   D       -       0xfffff80004089700  [softirq_1]
100007                   D       -       0xfffff80004089600  [if_io_tqg_0]
100008                   D       -       0xfffff80004089500  [if_io_tqg_1]
100009                   D       -       0xfffff80004089400  [if_config_tqg_0]
100010                   D       -       0xfffff8000434bd00  [in6m_free taskq]
100011                   D       -       0xfffff8000434bc00  [kqueue_ctx taskq]
100012                   D       -       0xfffff8000434bb00  [inm_free taskq]
100013                   D       -       0xfffff8000434ba00  [linuxkpi_irq_wq]
100015                   D       -       0xfffff8000434b800  [aiod_kick taskq]
100017                   D       -       0xfffff8000434b600  [thread taskq]
100019                   D       -       0xfffff8000434b400  [linuxkpi_short_wq_0]
100020                   D       -       0xfffff8000434b400  [linuxkpi_short_wq_1]
100021                   D       -       0xfffff8000434b400  [linuxkpi_short_wq_2]
100022                   D       -       0xfffff8000434b400  [linuxkpi_short_wq_3]
100023                   D       -       0xfffff8000434b300  [linuxkpi_long_wq_0]
100024                   D       -       0xfffff8000434b300  [linuxkpi_long_wq_1]
100025                   D       -       0xfffff8000434b300  [linuxkpi_long_wq_2]
100026                   D       -       0xfffff8000434b300  [linuxkpi_long_wq_3]
100033                   D       -       0xfffff8000434b200  [firmware taskq]
100037                   D       -       0xfffff8000434b100  [crypto_0]
100038                   D       -       0xfffff8000434b100  [crypto_1]
100054                   D       -       0xfffff8000469ec00  [vtnet0 rxq 0]
100055                   D       -       0xfffff8000469eb00  [vtnet0 txq 0]
100056                   D       -       0xfffff8000469ea00  [vtnet0 rxq 1]
100057                   D       -       0xfffff8000469e900  [vtnet0 txq 1]
100059                   D       vtbslp  0xfffff800046cf080  [virtio_balloon]
100063                   D       -       0xfffff8000469e800  [mca taskq]
100066                   D       -       0xffffffff81e0c241  [deadlkres]
100073                   D       -       0xfffff80004ba0e00  [acpi_task_0]
100074                   D       -       0xfffff80004ba0e00  [acpi_task_1]
100075                   D       -       0xfffff80004ba0e00  [acpi_task_2]
100076                   D       -       0xfffff8000434b000  [CAM taskq]
db> show all locks
Process 937 (syz-executor0765289) thread 0xfffffe0094c2ec00 (100114)
exclusive sleep mutex process lock (process lock) r = 0 (0xfffff800165b6660) locked @ /syzkaller/managers/main/kernel/sys/kern/kern_time.c:1382
Process 789 (syz-executor0765289) thread 0xfffffe00557d7500 (100097)
exclusive sx proctree (proctree) r = 0 (0xffffffff82002900) locked @ /syzkaller/managers/main/kernel/sys/kern/kern_exit.c:1251
Process 12 (intr) thread 0xfffffe000410cc00 (100031)
exclusive sleep mutex itimer lock (itimer lock) r = 0 (0xfffff80016998840) locked @ /syzkaller/managers/main/kernel/sys/kern/kern_mutex.c:211
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
            devbuf         4216         4340K         4241
          tcp_hpts            5         3201K            5
             vtbuf           24         1968K           46
         sysctloid        30935         1814K        31002
              kobj          332         1328K          492
            newblk          575         1168K          605
          vfscache            3         1025K            3
               pcb           21          537K           74
          inodedep           50          531K           76
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          100          208K         1138
            acpica         1674          184K        55406
         vnet_data            1          168K            1
           tidhash            3          141K            3
           pagedep           15          132K           19
        tfo_ccache            1          128K            1
               sem            4          106K            4
            DEVFS1          102          102K          111
            linker          287          101K          310
               bus          995           81K         3509
          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         1588
         hostcache            1           32K            1
               shm            1           32K            1
           kdtrace          162           32K         1053
              umtx          252           32K          252
            DEVFS3          121           31K          131
               msg            4           30K            4
              vmem            3           26K            4
        gtaskqueue           18           26K           18
            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           33           14K         1719
            KTRACE          100           13K          100
              kenv           93           12K           93
      eventhandler          133           12K          133
            ifaddr           30           12K           32
              rman           84           10K          425
              GEOM           60           10K          488
         bmsafemap            2            9K           43
              UART           12            9K           12
           devstat            4            9K            4
              ksem            1            8K            1
               rpc            2            8K            2
             shmfd            1            8K            1
       pfs_vncache            1            8K            1
         pfs_nodes           20            8K           20
     audit_evclass          236            8K          294
            sglist            5            7K            5
           CAM DEV            3            6K          510
         taskqueue           57            6K           57
              cred           21            6K          243
         CAM queue            5            6K         1528
       ufs_dirhash           24            5K           24
               UMA          263            5K          263
            dirrem           17            5K           28
            plimit           17            5K          337
                vt           11            5K           11
             ifnet            3            5K            3
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
          filedesc            1            4K            1
           acpisem           28            4K           28
            diradd           26            4K           37
             hhook           13            4K           13
          routetbl           14            4K           14
       ether_multi           40            4K           50
           lltable           11            4K           11
          pf_ifnet            5            3K            6
       fpukern_ctx            3            3K            3
         in6_multi           25            3K           25
            kqueue           47            3K          940
           pwddesc           47            3K          938
          terminal           11            3K           11
           session           20            3K           32
           uidinfo            3            3K            9
        local_apic            1            2K            1
           io_apic            1            2K            1
         ipsec-saq            2            2K            2
             selfd           27            2K        11059
         proc-args           39            2K          495
            Unitno           27            2K           39
           CAM XPT           22            2K          543
             lockf           15            2K           22
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
               msi            9            2K            9
             clone            9            2K            9
           softdep            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
       vnodemarker            2            1K           10
      NFSD session            1            1K            1
        CAM periph            4            1K          271
            select            7            1K           29
             ipsec            3            1K            3
          indirdep            3            1K            3
             nhops            6            1K            6
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           89
          pci_link           10            1K           10
          sctp_ifa            5            1K            6
            crypto            4            1K            4
            ip6ndp            4            1K            5
 encap_export_host           12            1K           12
      linuxcurrent            3            1K            4
         newdirblk            4            1K            8
             mkdir            4            1K           16
          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           10
          sctp_ifn            2            1K            6
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
               mld            2            1K            2
              igmp            2            1K            2
            vnodes            1            1K            1
              ktls            1            1K            1
            feeder            7            1K            7
       inpcbpolicy            6            1K          126
           tcpfunc            3            1K            3
        loginclass            3            1K            7
            prison            6            1K            6
             linux            5            1K            6
        aesni_data            2            1K            2
            DEVFSP            2            1K            2
            apmdev            1            1K            1
          atkbddev            2            1K            2
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
          freework            1            1K           26
          freefrag            1            1K            9
          CAM path            4            1K         1034
          procdesc            1            1K            6
          pmchooks            1            1K            1
          nexusdev            7            1K            7
            soname            4            1K         3212
          filecaps            4            1K           70
               tun            3            1K            3
          sctp_vrf            1            1K            1
              vnet            1            1K            1
           entropy            2            1K           35
          acpiintr            1            1K            1
               pmc            1            1K            1
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          p1003.1b            1            1K            1
          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
            mqdata            0            0K            0
        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
       NFSD string            0            0K            0
       NFSD V4lock            0            0K            0
        madt_table            0            0K            2
          smartpqi            0            0K            0
      NFSD V4state            0            0K            0
     NFSD srvcache            0            0K            0
       msdosfs_fat            0            0K            0
     msdosfs_mount            0            0K            0
      msdosfs_node            0            0K            0
              iavf            0            0K            0
               ixl            0            0K            0
            DEVFS4            0            0K            0
            DEVFS2            0            0K            0
            gntdev            0            0K            0
       privcmd_dev            0            0K            0
        ice-resmgr            0            0K            0
         ice-osdep            0            0K            0
               ice            0            0K            0
             axgbe            0            0K            0
        evtchn_dev            0            0K            0
          xenstore            0            0K            0
         ciss_data            0            0K            0
         BACKLIGHT            0            0K            0
               xnb            0            0K            0
              xbbd            0            0K            0
               xbd            0            0K            0
           Balloon            0            0K            0
          sysmouse            0            0K            0
            vtfont            0            0K            0
          xen_intr            0            0K            0
           xen_hvm            0            0K            0
         legacydrv            0            0K            0
            qpidrv            0            0K            0
           ath_hal            0            0K            0
            athdev            0            0K            0
      dmar_idpgtbl            0            0K            0
          dmar_dom            0            0K            0
          dmar_ctx            0            0K            0
           ata_pci            0            0K            0
           ata_dma            0            0K            0
       ata_generic            0            0K            0
              isci            0            0K            0
      iommu_dmamap            0            0K            0
               amr            0            0K            0
     hyperv_socket            0            0K            0
           bxe_ilt            0            0K            0
            xenbus            0            0K            0
            pvscsi            0            0K            0
           scsi_da            0            0K           69
     vm_fictitious            0            0K            0
            ata_da            0            0K            0
           scsi_ch            0            0K            0
           scsi_cd            0            0K            0
       AHCI driver            0            0K            0
            USBdev            0            0K            0
               USB            0            0K            0
               agp            0            0K            0
           nvme_da            0            0K            0
           UMAHash            0            0K            0
           acpipwr            0            0K            0
         acpi_perf            0            0K            0
         vm_pgdata            0            0K            0
           jblocks            0            0K            0
          savedino            0            0K           17
          sentinel            0            0K            0
            jfsync            0            0K            0
            jtrunc            0            0K            0
             sbdep            0            0K            3
           jsegdep            0            0K            0
              jseg            0            0K            0
         jfreefrag            0            0K            0
          jfreeblk            0            0K            0
           jnewblk            0            0K            0
            jmvref            0            0K            0
           jremref            0            0K            0
           jaddref            0            0K            0
           freedep            0            0K            0
          freefile            0            0K            9
          freeblks            0            0K           25
        allocindir            0            0K            0
       allocdirect            0            0K            0
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           mactemp            0            0K            0
     audit_trigger            0            0K            0
 audit_pipe_presel            0            0K            0
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        audit_pipe            0            0K            0
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             xform            0            0K            0
            twsbuf            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
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        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
            MLX5EN            0            0K            0
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        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
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        MLX5EEPROM            0            0K            0
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               NLM            0            0K            0
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              ipid            0            0K            0
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      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
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           VN POLL            0            0K            0
      twa_commands            0            0K            0
            statfs            0            0K          197
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       export_host            0            0K            0
        cl_savebuf            0            0K            6
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      midi buffers            0            0K            0
             mixer            0            0K            0
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             hdacc            0            0K            0
              hdac            0            0K            0
              hdaa            0            0K            0
         acpicmbat            0            0K            0
       SIIS driver            0            0K            0
           CAM CCB            0            0K         1798
               PUC            0            0K            0
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agtiapi_MemAlloc malloc            0            0K            0
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          mbuf_tag            0            0K           27
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
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               iov            0            0K        13861
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filedesc_to_leader            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     862       13380       0     254   37609472        0
              pbuf   2624       0     989           0       0       2    2595136        0
              mbuf    256    8577     828       15874       0     254    2407680        0
          BUF TRIE    144     168   13300         442       0      62    1939392        0
        malloc-384    384    4184      16        4331       0      30    1612800        0
        malloc-128    128   10729      59       11257       0     126    1380864        0
       malloc-4096   4096     333       1         576       0       2    1368064        0
       UMA Slabs 0    112    9969       0        9969       0     126    1116528        0
         FFS inode   1160     501      17         511       0       8     600880        0
      malloc-65536  65536       4       2          12       0       1     393216        0
      malloc-65536  65536       5       0           5       0       1     327680        0
        RADIX NODE    144    2068     169       22211       0      62     322128        0
       malloc-4096   4096      71       1        1504       0       2     294912        0
         VM OBJECT    264     903      57       13963       0      30     253440        0
             VNODE    448     530      19         542       0      30     245952        0
        256 Bucket   2048     101      15       10200       0       8     237568        0
            THREAD   1792     114      12         114       0       8     225792        0
            DEVCTL   1024       0     216         115       0       0     221184        0
         malloc-64     64    3328      74        4240       0     254     217728        0
         malloc-16     16   12814     186       12915       0     254     208000        0
        malloc-256    256     764      16        1428       0      62     199680        0
         UMA Zones    768     235       4         235       0      16     183552        0
        malloc-128    128    1326      38       26205       0     126     174592        0
         malloc-32     32    4876      38        4902       0     254     157248        0
      malloc-65536  65536       0       2          42       0       1     131072        0
      malloc-65536  65536       0       2         136       0       1     131072        0
       FFS2 dinode    256     501       9         510       0      62     130560        0
       malloc-1024   1024     113       7         281       0      16     122880        0
          ksiginfo    112      34    1010          50       0     126     116928        0
         MAP ENTRY     96     848     370       39868       0     126     116928        0
         vmem btag     56    1891     113        1891       0     254     112224        0
       S VFS Cache    104     975      78        1017       0     126     109512        0
      malloc-32768  32768       1       2         131       0       1      98304        0
       malloc-2048   2048       5      39        2566       0       8      90112        0
          UMA Kegs    384     220       3         220       0      30      85632        0
           VMSPACE   2544      24       9         916       0       4      83952        0
        malloc-128    128     576      13        3700       0     126      75392        0
       malloc-8192   8192       7       2         110       0       1      73728        0
             g_bio    408       0     170        4648       0      30      69360        0
              PROC   1336      46       5         937       0       8      68136        0
         filedesc0   1072      47      16         938       0       8      67536        0
      mbuf_cluster   2048      30       2          30       0     254      65536        0
      malloc-16384  16384       4       0           4       0       1      65536        0
        128 Bucket   1024      39      20         585       0      16      60416        0
       malloc-8192   8192       7       0           7       0       1      57344        0
         malloc-64     64     752     130        2078       0     254      56448        0
        malloc-256    256     155      55         549       0      62      53760        0
      malloc-16384  16384       1       2         171       0       1      49152        0
         32 Bucket    256      46     134        5269       0      62      46080        0
         malloc-64     64     555     138        1679       0     254      44352        0
            clpbuf   2624       0      16          20       0      16      41984        0
           DIRHASH   1024      34       2          34       0      16      36864        0
             NAMEI   1024       0      36       12073       0      16      36864        0
        malloc-512    512      10      62         519       0      30      36864        0
            pcpu-8      8    4147     461        4175       0     254      36864        0
         64 Bucket    512      48      24        1397       0      30      36864        0
        malloc-128    128      19     260         295       0     126      35712        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-16384  16384       1       1           7       0       1      32768        0
       malloc-8192   8192       4       0           4       0       1      32768        0
       malloc-1024   1024      26       6          27       0      16      32768        0
           pcpu-64     64     479      33         479       0     254      32768        0
        malloc-256    256     105      15         138       0      62      30720        0
        malloc-384    384      62       8          65       0      30      26880        0
       malloc-8192   8192       0       3          28       0       1      24576        0
       malloc-4096   4096       6       0           6       0       2      24576        0
       malloc-2048   2048      11       1          12       0       8      24576        0
       malloc-1024   1024      16       8         922       0      16      24576        0
         malloc-32     32     345     411        4232       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      49      11          92       0      30      23040        0
        malloc-256    256      34      56         780       0      62      23040        0
            socket    944      14      10        1237       0     254      22656        0
       malloc-2048   2048       6       4         237       0       8      20480        0
         malloc-64     64       5     310         246       0     254      20160        0
         TURNSTILE    136     127      20         127       0      62      19992        0
       Mountpoints   2752       2       5           2       0       4      19264        0
        malloc-256    256      60      15         450       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       2       0           2       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-1024   1024       3      13          43       0      16      16384        0
         malloc-64     64      69     183       14226       0     254      16128        0
         malloc-32     32      43     461         813       0     254      16128        0
          8 Bucket     80      35     165         478       0     126      16000        0
        malloc-128    128      82      42         422       0     126      15872        0
        malloc-384    384      31       9          31       0      30      15360        0
              pipe    744       7      13         287       0      16      14880        0
        SLEEPQUEUE     88     127      33         127       0     126      14080        0
       malloc-4096   4096       1       2         202       0       2      12288        0
        malloc-512    512       0      24         118       0      30      12288        0
         malloc-64     64      58     131       11147       0     254      12096        0
             Files     80      69      81        6532       0     126      12000        0
         malloc-16     16     471     279        1773       0     254      12000        0
              kenv    258      15      30        1049       0      30      11610        0
        malloc-256    256       3      42          99       0      62      11520        0
       malloc-4096   4096       1       1           2       0       2       8192        0
       malloc-2048   2048       1       3          13       0       8       8192        0
       malloc-2048   2048       3       1           3       0       8       8192        0
       malloc-2048   2048       1       3           2       0       8       8192        0
       malloc-1024   1024       0       8           4       0      16       8192        0
       malloc-1024   1024       5       3           5       0      16       8192        0
       malloc-1024   1024       2       6           6       0      16       8192        0
        malloc-512    512       5      11          13       0      30       8192        0
        malloc-512    512       2      14          61       0      30       8192        0
        malloc-512    512       3      13           3       0      30       8192        0
           rtentry    176      13      33          17       0      62       8096        0
              PGRP     88      20      72          32       0     126       8096        0
          rl_entry     40      27     175          27       0     254       8080        0
             udpcb     32       2     250         116       0     254       8064        0
               PWD     32      10     242         102       0     254       8064        0
         malloc-64     64       9     117          14       0     254       8064        0
         malloc-32     32       7     245          77       0     254       8064        0
         malloc-32     32     125     127         987       0     254       8064        0
         malloc-32     32      12     240          12       0     254       8064        0
         malloc-32     32      10     242         132       0     254       8064        0
         16 Bucket    144      34      22         200       0      62       8064        0
          4 Bucket     48       7     161          82       0     254       8064        0
          2 Bucket     32      43     209         493       0     254       8064        0
      vtnet_tx_hdr     24       0     334        1532       0     254       8016        0
         malloc-16     16      13     487          72       0     254       8000        0
         malloc-16     16      26     474          71       0     254       8000        0
         malloc-16     16      37     463       25456       0     254       8000        0
         malloc-16     16      24     476          30       0     254       8000        0
         malloc-16     16       6     494           7       0     254       8000        0
        malloc-128    128      29      33         101       0     126       7936        0
        malloc-128    128      18      44          36       0     126       7936        0
        malloc-128    128      22      40          32       0     126       7936        0
         tcp_inpcb    488       3      13           7       0     254       7808        0
         udp_inpcb    488       2      14         116       0     254       7808        0
            itimer    352       1      21         148       0      30       7744        0
     routing nhops    256      10      20          17       0      62       7680        0
             unpcb    256       7      23        1094       0     254       7680        0
       mbuf_packet    256       0      30          95       0     254       7680        0
        malloc-384    384       1      19         347       0      30       7680        0
        malloc-384    384       2      18           2       0      30       7680        0
        malloc-256    256      12      18         268       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-4096   4096       1       0           1       0       2       4096        0
       malloc-2048   2048       1       1           1       0       8       4096        0
       malloc-1024   1024       2       2           2       0      16       4096        0
        malloc-512    512       1       7           1       0      30       4096        0
           pcpu-16     16       7     249           7       0     254       4096        0
        sctp_laddr     48       0      84           4       0     254       4032        0
          syncache    168       0      24           5       0     254       4032        0
         malloc-64     64       1      62           1       0     254       4032        0
         malloc-32     32      19     107          52       0     254       4032        0
         hostcache     80       1      49           1       0     254       4000        0
             KNOTE    160       0      25           3       0      62       4000        0
         malloc-16     16       0     250           1       0     254       4000        0
             ripcb    488       1       7           3       0     254       3904        0
       UMA Slabs 1    176       8      14           8       0      62       3872        0
        malloc-384    384       0      10           1       0      30       3840        0
            mqnode    416       3       6           3       0      30       3744        0
        KMAP ENTRY     96      12      27          12       0       0       3744        0
              vmem   1856       1       1           1       0       8       3712        0
           SMR CPU     32       2      61           2       0     254       2016        0
        SMR SHARED     24       2      61           2       0     254       1512        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_rack_pcb    704       0       0           0       0      16          0        0
      tcp_rack_map    120       0       0           0       0     126          0        0
       tcp_bbr_pcb    832       0       0           0       0      16          0        0
       tcp_bbr_map    128       0       0           0       0     126          0        0
    IPsec SA lft_c     16       0       0           0       0     254          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
            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
           NCLNODE    584       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
        TMPFS node    224       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
           cryptop    280       0       0           0       0      30          0        0
  linux_dma_object     24       0       0           0       0     254          0        0
  linux_dma_pctrie    144       0       0           0       0      62          0        0
   IOMMU_MAP_ENTRY    120       0       0           0       0     126          0        0
      ktls_session    192       0       0           0       0      62          0        0
    mbuf_jumbo_16k  16384       0       0           0       0     254          0        0
     mbuf_jumbo_9k   9216       0       0           0       0     254          0        0
      audit_record   1280       0       0           0       0       8          0        0
         domainset     40       0       0           0       0     254          0        0
        MAC labels     40       0       0           0       0     254          0        0
            vnpbuf   2624       0       0           0       0      64          0        0
            mdpbuf   2624       0       0           0       0       3          0        0
           nfspbuf   2624       0       0           0       0      16          0        0
            swwbuf   2624       0       0           0       0       8          0        0
            swrbuf   2624       0       0           0       0      16          0        0
          umtx_shm     88       0       0           0       0     126          0        0
           umtx pi     96       0       0           0       0     126          0        0
rangeset pctrie nodes    144       0       0           0       0      62          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
       malloc-8192   8192       0       0           0       0       1          0        0
       malloc-8192   8192       0       0           0       0       1          0        0
       malloc-4096   4096       0       0           0       0       2          0        0
       malloc-2048   2048       0       0           0       0       8          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
        malloc-256    256       0       0           0       0      62          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 (15):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-freebsd-main 2021/04/15 10:46 freebsd-src 8e84712d01eb fcdb12ba console log report syz C Fatal trap 18: integer divide fault in realtimer_expire_l
ci-freebsd-main 2021/05/12 17:17 freebsd-src 8c39e25220bb 29b1aea5 console log report Fatal trap 18: integer divide fault in realtimer_expire_l
ci-freebsd-main 2021/05/12 00:37 freebsd-src b8f113cab91f 86294427 console log report Fatal trap 18: integer divide fault in realtimer_expire_l
ci-freebsd-main 2021/05/11 04:07 freebsd-src c55b340f824d ca873091 console log report Fatal trap 18: integer divide fault in realtimer_expire_l
ci-freebsd-main 2021/05/09 22:54 freebsd-src c2c9ef3cedf6 bc5434be console log report Fatal trap 18: integer divide fault in realtimer_expire_l
ci-freebsd-main 2021/05/06 04:32 freebsd-src 4e1e1d667fc8 06c27ff5 console log report Fatal trap 18: integer divide fault in realtimer_expire_l
ci-freebsd-main 2021/05/03 19:47 freebsd-src cff133b05ba1 ad61f371 console log report Fatal trap 18: integer divide fault in realtimer_expire_l
ci-freebsd-main 2021/05/01 06:54 freebsd-src a6ca7519f89c 77e2b668 console log report Fatal trap 18: integer divide fault in realtimer_expire_l
ci-freebsd-main 2021/05/01 05:38 freebsd-src a6ca7519f89c 77e2b668 console log report Fatal trap 18: integer divide fault in realtimer_expire_l
ci-freebsd-main 2021/04/30 08:35 freebsd-src 420d30f5bdbf 77e2b668 console log report Fatal trap 18: integer divide fault in realtimer_expire_l
ci-freebsd-main 2021/04/25 23:59 freebsd-src 8e491aaeac6e 33592cee console log report Fatal trap 18: integer divide fault in realtimer_expire_l
ci-freebsd-main 2021/04/22 23:55 freebsd-src 2183bfcce46b 590921a5 console log report Fatal trap 18: integer divide fault in realtimer_expire_l
ci-freebsd-main 2021/04/18 00:06 freebsd-src 0f29396e493b 7e2b734b console log report Fatal trap 18: integer divide fault in realtimer_expire_l
ci-freebsd-main 2021/04/16 23:36 freebsd-src 4b45c2bb83a1 7e2b734b console log report Fatal trap 18: integer divide fault in realtimer_expire_l
ci-freebsd-main 2021/04/15 10:33 freebsd-src 8e84712d01eb fcdb12ba console log report Fatal trap 18: integer divide fault in realtimer_expire_l
* Struck through repros no longer work on HEAD.