syzbot


panic: refcount ADDR wraparound

Status: fixed on 2020/03/20 00:05
Reported-by: syzbot+0c9b05e2b727aae21eef@syzkaller.appspotmail.com
Fix commit: adbdb897689b fd: always nullify *fdp in fget* routines
First crash: 1099d, last: 1099d
similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
freebsd panic: refcount ADDR wraparound (4) 21 375d 442d 2/2 fixed on 2022/02/09 04:03
freebsd panic: refcount ADDR wraparound (3) C 9 624d 625d 2/2 fixed on 2021/05/23 21:08
freebsd panic: refcount ADDR wraparound (2) 3883 1016d 1017d 0/2 auto-closed as invalid on 2020/06/25 21:25

Sample crash report:
login: panic: refcount 0xfffff80003314c08 wraparound
cpuid = 0
time = 1580799161
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe00244bd760
vpanic() at vpanic+0x1ce/frame 0xfffffe00244bd7d0
panic() at panic+0x43/frame 0xfffffe00244bd830
_refcount_update_saturated() at _refcount_update_saturated+0x15/frame 0xfffffe00244bd840
refcount_release_last() at refcount_release_last+0xfb/frame 0xfffffe00244bd880
closef() at closef+0x2b2/frame 0xfffffe00244bd910
fdescfree_fds() at fdescfree_fds+0xa4/frame 0xfffffe00244bd960
fdescfree() at fdescfree+0x60f/frame 0xfffffe00244bda30
exit1() at exit1+0x765/frame 0xfffffe00244bdaa0
sys_sys_exit() at sys_sys_exit+0xd/frame 0xfffffe00244bdab0
amd64_syscall() at amd64_syscall+0x499/frame 0xfffffe00244bdbf0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe00244bdbf0
--- syscall (1, FreeBSD ELF64, sys_sys_exit), rip = 0x44761a, rsp = 0x7fffffffead8, rbp = 0x7fffffffeaf0 ---
KDB: enter: panic
[ thread pid 771 tid 100106 ]
Stopped at      kdb_enter+0x67: movq    $0,0x1466a56(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b  ll+0x1a
es                        0x3b  ll+0x1a
fs                        0x13
gs                        0x1b
ss                        0x28  ll+0x7
rax                       0x12
rcx                       0x80  ll+0x5f
rdx         0xffffffff81899f5d
rbx                          0
rsp         0xfffffe00244bd740
rbp         0xfffffe00244bd760
rsi                        0x1
rdi                          0
r8                           0
r9                  0xffffffff
r10                          0
r11                 0xa4d5dfbb
r12         0xffffffff82068d90  ddb_dbbe
r13                          0
r14         0xffffffff81938dcf
r15         0xffffffff81938dcf
rip         0xffffffff810af647  kdb_enter+0x67
rflags                    0x86  ll+0x65
kdb_enter+0x67: movq    $0,0x1466a56(%rip)
db> show proc
Process 771 (syz-executor7406054) at 0xfffff8003a69a000:
 state: NORMAL
 uid: 0  gids: 0, 0, 5
 parent: pid 769 at 0xfffff8003a69b000
 ABI: FreeBSD ELF64
 arguments: ./syz-executor740605470
 reaper: 0xfffff80003300a60 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffff8003a867000
   (map 0xfffff8003a867000)
   (map.pmap 0xfffff8003a8670c0)
   (pmap 0xfffff8003a867120)
 threads: 1
100106                   Run     CPU 0                       syz-executor7406054
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
  771   769   769     0  RE      CPU 0                       syz-executor7406054
  769   767   769     0  Ss      pause   0xfffff8003a69b0a8  csh
  767   680   767     0  Ss      select  0xfffff80003ce1e40  sshd
  746     1   746     0  Ss+     ttyin   0xfffff800034030b0  getty
  745     1   745     0  Ss+     ttyin   0xfffff80003acb4b0  getty
  744     1   744     0  Ss+     ttyin   0xfffff80003acb8b0  getty
  743     1   743     0  Ss+     ttyin   0xfffff80003acbcb0  getty
  742     1   742     0  Ss+     ttyin   0xfffff80003aca0b0  getty
  741     1   741     0  Ss+     ttyin   0xfffff80003aca4b0  getty
  740     1   740     0  Ss+     ttyin   0xfffff80003aca8b0  getty
  739     1   739     0  Ss+     ttyin   0xfffff80003acacb0  getty
  738     1   738     0  Ss+     ttyin   0xfffff80003acf0b0  getty
  736     1    22     0  S+      piperd  0xfffff80003d9b5f0  logger
  735   734    22     0  S+      nanslp  0xffffffff824feca0  sleep
  734     1    22     0  S+      wait    0xfffff80003e1b000  sh
  684     1   684     0  Ss      nanslp  0xffffffff824feca1  cron
  680     1   680     0  Ss      select  0xfffff80003d36840  sshd
  493     1   493     0  Ss      select  0xfffff80003d366c0  syslogd
  422     1   422     0  Ss      select  0xfffff80003ced8c0  devd
  421     1   421    65  Ss      select  0xfffff80003d367c0  dhclient
  336     1   336     0  Ss      select  0xfffff80003ced2c0  dhclient
  333     1   333     0  Ss      select  0xfffff80003ced240  dhclient
   21     0     0     0  DL      vlruwt  0xfffff80003b14a60  [vnlru]
   20     0     0     0  DL      syncer  0xffffffff825d5158  [syncer]
   19     0     0     0  DL      (threaded)                  [bufdaemon]
100065                   D       qsleep  0xffffffff825d4658  [bufdaemon]
100066                   D       -       0xffffffff8200a980  [bufspacedaemon-0]
100081                   D       sdflush 0xfffff80003db2ce8  [/ worker]
   18     0     0     0  DL      psleep  0xffffffff825f00c8  [vmdaemon]
   17     0     0     0  DL      (threaded)                  [pagedaemon]
100063                   D       psleep  0xffffffff8261cfd8  [dom0]
100069                   D       launds  0xffffffff8261cfe4  [laundry: dom0]
100070                   D       umarcl  0xffffffff8153f840  [uma]
   16     0     0     0  DL      -       0xffffffff82359530  [rand_harvestq]
   15     0     0     0  DL      waiting 0xffffffff826625a0  [sctp_iterator]
    9     0     0     0  DL      -       0xffffffff825d405c  [soaiod4]
    8     0     0     0  DL      -       0xffffffff825d405c  [soaiod3]
    7     0     0     0  DL      -       0xffffffff825d405c  [soaiod2]
    6     0     0     0  DL      -       0xffffffff825d405c  [soaiod1]
    5     0     0     0  DL      (threaded)                  [cam]
100031                   D       -       0xffffffff82234940  [doneq0]
100062                   D       -       0xffffffff82234808  [scanner]
    4     0     0     0  DL      crypto_ 0xfffff800031fb090  [crypto returns 1]
    3     0     0     0  DL      crypto_ 0xfffff800031fb030  [crypto returns 0]
    2     0     0     0  DL      crypto_ 0xffffffff825ea138  [crypto]
   14     0     0     0  DL      seqstat 0xfffff80003370c88  [sequencer 00]
   13     0     0     0  DL      (threaded)                  [geom]
100022                   D       -       0xffffffff8261b608  [g_event]
100023                   D       -       0xffffffff8261b618  [g_up]
100024                   D       -       0xffffffff8261b610  [g_down]
   12     0     0     0  WL      (threaded)                  [intr]
100006                   I                                   [swi5: fast taskq]
100010                   I                                   [swi6: task queue]
100011                   I                                   [swi6: Giant taskq]
100017                   I                                   [swi3: vm]
100018                   I                                   [swi4: clock (0)]
100019                   I                                   [swi4: clock (1)]
100020                   I                                   [swi1: netisr 0]
100032                   I                                   [irq24: virtio_pci0]
100033                   I                                   [irq25: virtio_pci0]
100034                   I                                   [irq26: virtio_pci0]
100035                   I                                   [irq27: virtio_pci0]
100036                   I                                   [irq28: virtio_pci1]
100037                   I                                   [irq29: virtio_pci1]
100038                   I                                   [irq30: virtio_pci1]
100039                   I                                   [irq31: virtio_pci1]
100040                   I                                   [irq32: virtio_pci1]
100045                   I                                   [irq10: virtio_pci2]
100047                   I                                   [irq1: atkbd0]
100048                   I                                   [irq12: psm0]
100049                   I                                   [swi0: uart uart++]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   Run     CPU 1                       [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffff80003300a60  [init]
   10     0     0     0  DL      audit_w 0xffffffff82663230  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff82609c48  [swapper]
100005                   D       -       0xfffff8000334e100  [thread taskq]
100007                   D       -       0xfffff8000334be00  [kqueue_ctx taskq]
100008                   D       -       0xfffff8000334bd00  [config_0]
100009                   D       -       0xfffff8000334bc00  [aiod_kick taskq]
100012                   D       -       0xfffff8000334b900  [if_config_tqg_0]
100013                   D       -       0xfffff8000334b800  [if_io_tqg_0]
100014                   D       -       0xfffff8000334b700  [if_io_tqg_1]
100015                   D       -       0xfffff8000334b600  [softirq_0]
100016                   D       -       0xfffff8000334b500  [softirq_1]
100021                   D       -       0xfffff8000334b400  [firmware taskq]
100026                   D       -       0xfffff8000334b300  [crypto_0]
100027                   D       -       0xfffff8000334b300  [crypto_1]
100041                   D       -       0xfffff8000334b100  [vtnet0 rxq 0]
100042                   D       -       0xfffff8000334b000  [vtnet0 txq 0]
100043                   D       -       0xfffff8000334ce00  [vtnet0 rxq 1]
100044                   D       -       0xfffff8000334cd00  [vtnet0 txq 1]
100046                   D       vtbslp  0xfffff800034dc580  [virtio_balloon]
100050                   D       -       0xfffff8000334cc00  [mca taskq]
100054                   D       -       0xffffffff81cdce21  [deadlkres]
100057                   D       -       0xfffff80003b45300  [acpi_task_0]
100058                   D       -       0xfffff80003b45300  [acpi_task_1]
100059                   D       -       0xfffff80003b45300  [acpi_task_2]
100061                   D       -       0xfffff8000334b200  [CAM taskq]
db> show all locks
db> show malloc
              Type        InUse        MemUse     Requests
            devbuf         4213         4851K         4238
             vtbuf           24         1968K           46
         sysctloid        26737         1565K        26801
              kobj          332         1328K          488
            newblk          525         1155K          543
          vfscache            4         1025K            4
               pcb           22          537K           76
          inodedep           49          536K           72
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          388K            4
           subproc          105          207K          833
            acpica         1674          185K        49750
         vnet_data            1          168K            1
           pagedep           14          132K           18
        tfo_ccache            1          128K            1
               sem            4          106K            4
            DEVFS1          101          101K          110
            linker          222           89K          241
               bus          964           78K         3300
          mtx_pool            2           72K            2
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          494           62K          494
        gtaskqueue           22           34K           22
         hostcache            1           32K            1
               shm            1           32K            1
               msg            4           30K            4
            DEVFS3          120           30K          130
              umtx          228           29K          228
           kdtrace          140           27K         1596
        DEVFS_RULE           56           27K           56
            kbdmux            6           22K            6
              vmem            3           19K            4
               BPF           10           18K           10
              temp           17           17K         1533
         ufs_mount            3           17K            4
              proc            3           17K            3
               tty           16           16K           16
           tidhash            1           16K            1
           ithread           89           15K           89
            bus-sc           30           14K         1394
            KTRACE          100           13K          100
            ifaddr           30           12K           32
              kenv           95           12K           99
      eventhandler          122           11K          122
         pfs_nodes           20           10K           20
              GEOM           60           10K          487
              rman           82           10K          423
         bmsafemap            3            9K           41
           devstat            4            9K            4
              UART           12            9K           12
               rpc            2            8K            2
             shmfd            1            8K            1
       pfs_vncache            1            8K            1
     audit_evclass          231            8K          289
              cred           27            7K          234
           CAM DEV            3            6K          510
                vt           11            6K           11
            sglist            5            6K            5
         CAM queue            5            6K         1528
          routetbl           28            5K           32
       ufs_dirhash           24            5K           24
         taskqueue           42            5K           42
            dirrem           17            5K           28
            plimit           17            5K          322
             ifnet            3            5K            3
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
          filedesc            1            4K            1
               UMA          236            4K          236
           lltable           11            4K           11
            diradd           26            4K           37
             hhook           13            4K           13
       ether_multi           40            4K           45
         in6_multi           25            3K           25
           acpisem           22            3K           22
          terminal           11            3K           11
            kqueue           44            3K          774
           session           20            3K           31
              pgrp           20            3K           31
           uidinfo            4            3K            4
            select           18            3K           18
        local_apic            1            2K            1
           io_apic            1            2K            1
         ipsec-saq            2            2K            2
         proc-args           39            2K          472
           CAM XPT           22            2K          543
             lockf           15            2K           22
            Unitno           25            2K           37
           acpidev           20            2K           20
            crypto            2            2K            2
               msi            9            2K            9
           softdep            1            1K            1
       ipsecpolicy            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
             clone            8            1K            8
       vnodemarker            2            1K            8
      NFSD session            1            1K            1
        CAM periph            4            1K          271
          indirdep            3            1K            3
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           86
          pci_link           10            1K           10
            ip6ndp            4            1K            5
          sctp_ifa            5            1K            5
           CAM SIM            2            1K            2
         newdirblk            4            1K            8
             mkdir            4            1K           16
          in_multi            2            1K            3
              pfil            4            1K            4
    chacha20random            1            1K            1
             epoch            4            1K            4
              cdev            2            1K            2
 encap_export_host            8            1K            8
               osd            3            1K            9
               mld            2            1K            2
          sctp_ifn            2            1K            2
              igmp            2            1K            2
            vnodes            1            1K            1
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
       inpcbpolicy            7            1K          132
            feeder            7            1K            7
        loginclass            3            1K            3
          CAM path            4            1K         1034
            apmdev            1            1K            1
          atkbddev            2            1K            2
          pmchooks            1            1K            1
            prison            4            1K            4
            DEVFSP            2            1K            2
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
            soname            4            1K         5740
          filecaps            4            1K           66
               tun            3            1K            3
          nexusdev            5            1K            5
           entropy            2            1K           35
           tcpfunc            1            1K            1
          sctp_vrf            1            1K            1
              vnet            1            1K            1
          acpiintr            1            1K            1
               pmc            1            1K            1
              cpus            2            1K            2
          freework            1            1K           26
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          p1003.1b            1            1K            1
           CAM CCB            0            0K         1794
        madt_table            0            0K            2
               PUC            0            0K            0
          ppbusdev            0            0K            0
agtiapi_MemAlloc malloc            0            0K            0
    osti_cacheable            0            0K            0
          tempbuff            0            0K            0
          tempbuff            0            0K            0
            pvscsi            0            0K            0
          smartpqi            0            0K            0
ag_tgt_map_t malloc            0            0K            0
ag_slr_map_t malloc            0            0K            0
lDevFlags * malloc            0            0K            0
tiDeviceHandle_t * malloc            0            0K            0
ag_portal_data_t malloc            0            0K            0
ag_device_t malloc            0            0K            0
     STLock malloc            0            0K            0
          CCB List            0            0K            0
              iavf            0            0K            0
               ixl            0            0K            0
            sr_iov            0            0K            0
               OCS            0            0K            0
               OCS            0            0K            0
              nvme            0            0K            0
               nvd            0            0K            0
            netmap            0            0K            0
            mwldev            0            0K            0
        MVS driver            0            0K            0
       fpukern_ctx            0            0K            0
          xen_intr            0            0K            0
     CAM ccb queue            0            0K            0
           xen_hvm            0            0K            0
         legacydrv            0            0K            0
            qpidrv            0            0K            0
          mrsasbuf            0            0K            0
          mpt_user            0            0K            0
      dmar_idpgtbl            0            0K            0
          dmar_dom            0            0K            0
          dmar_ctx            0            0K            0
       dmar_dmamap            0            0K            0
          mps_user            0            0K            0
            MPSSAS            0            0K            0
              isci            0            0K            0
           bxe_ilt            0            0K            0
            xenbus            0            0K            0
     vm_fictitious            0            0K            0
               mps            0            0K            0
          mpr_user            0            0K            0
            MPRSAS            0            0K            0
           UMAHash            0            0K            0
         vm_pgdata            0            0K            0
           jblocks            0            0K            0
          savedino            0            0K           13
          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
          freefrag            0            0K            7
        allocindir            0            0K            0
       allocdirect            0            0K            0
          ufs_trim            0            0K            0
           mactemp            0            0K            0
     audit_trigger            0            0K            0
 audit_pipe_presel            0            0K            0
     audit_pipeent            0            0K            0
        audit_pipe            0            0K            0
      audit_evname            0            0K            0
         audit_bsm            0            0K            0
      audit_gidset            0            0K            0
        audit_text            0            0K            0
        audit_path            0            0K            0
        audit_data            0            0K            0
        audit_cred            0            0K            0
             xform            0            0K            0
               NLM            0            0K            0
 nfsclient_nlminfo            0            0K            0
    nfsclient_lock            0            0K            0
           NFS FHA            0            0K            0
    ipsec-spdcache            0            0K            0
         ipsec-reg            0            0K            0
        ipsec-misc            0            0K            0
      ipsecrequest            0            0K            0
            ip6opt            0            0K            3
       ip6_msource            0            0K            0
      ip6_moptions            0            0K            0
       in6_mfilter            0            0K            0
             frag6            0            0K            0
            tcplog            0            0K            0
               LRO            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
      newreno data            0            0K            0
        ip_msource            0            0K            0
       ip_moptions            0            0K            0
        in_mfilter            0            0K            0
              ipid            0            0K            0
         80211scan            0            0K            0
      80211ratectl            0            0K            0
        80211power            0            0K            0
       80211nodeie            0            0K            0
         80211node            0            0K            0
      80211mesh_gt            0            0K            0
      80211mesh_rt            0            0K            0
         80211perr            0            0K            0
         80211prep            0            0K            0
         80211preq            0            0K            0
          80211dfs            0            0K            0
       80211crypto            0            0K            0
          80211vap            0            0K            0
             iflib            0            0K            0
              vlan            0            0K            0
               gif            0            0K            0
           ifdescr            0            0K            0
              zlib            0            0K            0
           fadvise            0            0K            0
               mpr            0            0K            0
            statfs            0            0K          195
       export_host            0            0K            0
        cl_savebuf            0            0K            3
            biobuf            0            0K            0
              aios            0            0K            0
               lio            0            0K            0
               acl            0            0K            0
            mfibuf            0            0K            0
          mbuf_tag            0            0K           25
              accf            0            0K            0
               pts            0            0K            0
               iov            0            0K        12991
          ioctlops            0            0K           86
           Witness            0            0K            0
             stack            0            0K            0
        md_sectors            0            0K            0
              sbuf            0            0K          288
           md_disk            0            0K            0
        compressor            0            0K            0
           malodev            0            0K            0
              SWAP            0            0K            0
               LED            0            0K            0
         sysctltmp            0            0K          567
            sysctl            0            0K            1
              ekcd            0            0K            0
            dumper            0            0K            0
              rctl            0            0K            0
          ix_sriov            0            0K            0
        aacraidcam            0            0K            0
                ix            0            0K            0
            ipsbuf            0            0K            0
            iirbuf            0            0K            0
             cache            0            0K            0
       aacraid_buf            0            0K            0
          kcovinfo            0            0K            0
      prison_racct            0            0K            0
       Fail Points            0            0K            0
             sigio            0            0K            1
filedesc_to_leader            0            0K            0
       tty console            0            0K            0
            aaccam            0            0K            0
            aacbuf            0            0K            0
              zstd            0            0K            0
            nvlist            0            0K            0
          SCSI ENC            0            0K            0
           SCSI sa            0            0K            0
        isofs_node            0            0K            0
       isofs_mount            0            0K            0
     tr_raid5_data            0            0K            0
    tr_raid1e_data            0            0K            0
     tr_raid1_data            0            0K            0
     tr_raid0_data            0            0K            0
    tr_concat_data            0            0K            0
       md_sii_data            0            0K            0
   md_promise_data            0            0K            0
    md_nvidia_data            0            0K            0
   md_jmicron_data            0            0K            0
     md_intel_data            0            0K            0
       md_ddf_data            0            0K            0
         raid_data            0            0K           72
     geom_flashmap            0            0K            0
         newnfsmnt            0            0K            0
  newnfsclient_req            0            0K            0
   NFSCL layrecall            0            0K            0
     NFSCL session            0            0K            0
     NFSCL sockreq            0            0K            0
     NFSCL devinfo            0            0K            0
     NFSCL flayout            0            0K            0
      NFSCL layout            0            0K            0
     NFSD rollback            0            0K            0
NFSCL diroffdiroff            0            0K            0
       NEWdirectio            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
           NFS req            0            0K            0
     NFSD usrgroup            0            0K            0
       NFSD string            0            0K            0
       NFSD V4lock            0            0K            0
      NFSD V4state            0            0K            0
     NFSD srvcache            0            0K            0
       msdosfs_fat            0            0K            0
     msdosfs_mount            0            0K            0
      msdosfs_node            0            0K            0
            DEVFS4            0            0K            0
            DEVFS2            0            0K            0
            gntdev            0            0K            0
       privcmd_dev            0            0K            0
        evtchn_dev            0            0K            0
          xenstore            0            0K            0
         scsi_pass            0            0K            0
         ciss_data            0            0K            0
               xnb            0            0K            0
              xbbd            0            0K            0
               xbd            0            0K            0
           Balloon            0            0K            0
          sysmouse            0            0K            0
            vtfont            0            0K            0
           ath_hal            0            0K            0
            athdev            0            0K            0
           ata_pci            0            0K            0
           ata_dma            0            0K            0
       ata_generic            0            0K            0
               amr            0            0K            0
           scsi_da            0            0K           69
            ata_da            0            0K            0
           scsi_ch            0            0K            0
           scsi_cd            0            0K            0
            USBdev            0            0K            0
               USB            0            0K            0
       AHCI driver            0            0K            0
               agp            0            0K            0
           nvme_da            0            0K            0
           acpipwr            0            0K            0
            twsbuf            0            0K            0
      twe_commands            0            0K            0
      twa_commands            0            0K            0
       tcp_log_dev            0            0K            0
      midi buffers            0            0K            0
             mixer            0            0K            0
              ac97            0            0K            0
             hdacc            0            0K            0
              hdac            0            0K            0
              hdaa            0            0K            0
         acpi_perf            0            0K            0
         acpicmbat            0            0K            0
       SIIS driver            0            0K            0
db> show ktr
No such command; use "help" to list available commands

Crashes (6):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-freebsd-main 2020/02/04 06:55 freebsd 41f5785ede42 93e5e335 console log report syz C
ci-freebsd-main 2020/02/04 05:31 freebsd 41f5785ede42 93e5e335 console log report syz C
ci-freebsd-i386 2020/02/04 06:46 freebsd 41f5785ede42 93e5e335 console log report syz
ci-freebsd-i386 2020/02/04 06:29 freebsd 41f5785ede42 93e5e335 console log report syz
ci-freebsd-main 2020/02/04 04:23 freebsd 41f5785ede42 93e5e335 console log report
ci-freebsd-i386 2020/02/04 05:05 freebsd 41f5785ede42 93e5e335 console log report
* Struck through repros no longer work on HEAD.