syzbot


panic: pipe_destroy_write_buffer: pipe map for ADDR contains residual data

Status: fixed on 2019/11/12 03:52
Reported-by: syzbot+5cce271bf2cb1b1e1876@syzkaller.appspotmail.com
Fix commit: 1cbfe73da570 Fix handling of PIPE_EOF in the direct write path.
First crash: 1235d, last: 1192d

Sample crash report:
login: panic: pipe_destroy_write_buffer: pipe map for 0xfffff800366ef5f0 contains residual data
cpuid = 0
time = 1572767885
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe00242fb820
vpanic() at vpanic+0x1c7/frame 0xfffffe00242fb890
panic() at panic+0x43/frame 0xfffffe00242fb8f0
pipe_write() at pipe_write+0x1fd1/frame 0xfffffe00242fb9c0
dofilewrite() at dofilewrite+0xb0/frame 0xfffffe00242fba10
kern_writev() at kern_writev+0x63/frame 0xfffffe00242fba50
sys_write() at sys_write+0xd1/frame 0xfffffe00242fbac0
amd64_syscall() at amd64_syscall+0x473/frame 0xfffffe00242fbbf0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe00242fbbf0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x4132ba, rsp = 0x7fffdfffdf38, rbp = 0x3 ---
KDB: enter: panic
[ thread pid 811 tid 100125 ]
Stopped at      kdb_enter+0x67: movq    $0,0x1469a56(%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         0xffffffff81877586
rbx                          0
rsp         0xfffffe00242fb800
rbp         0xfffffe00242fb820
rsi                          0
rdi                          0
r8                           0
r9                  0xffffffff
r10                          0
r11         0xfffff80003c934f0
r12         0xffffffff82068cf0  ddb_dbbe
r13                          0
r14         0xffffffff81914cb9
r15         0xffffffff81914cb9
rip         0xffffffff810a9b97  kdb_enter+0x67
rflags                    0x86  ll+0x65
kdb_enter+0x67: movq    $0,0x1469a56(%rip)
db> show proc
Process 811 (syz-executor.0) at 0xfffff80003c91000:
 state: NORMAL
 uid: 0  gids: 0, 0, 5
 parent: pid 777 at 0xfffff8000397f000
 ABI: FreeBSD ELF64
 arguments: /root/syz-executor.0
 reaper: 0xfffff800031ea530 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffff800366d5000
   (map 0xfffff800366d5000)
   (map.pmap 0xfffff800366d50d0)
   (pmap 0xfffff800366d5130)
 threads: 3
100079                   s                                   syz-executor.0
100125                   Run     CPU 0                       syz-executor.0
100126                   D       pipecl  0xfffff800366ef5f0  syz-executor.0
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
  811   777   777     0  T       (threaded)                  syz-executor.0
100079                   s                                   syz-executor.0
100125                   Run     CPU 0                       syz-executor.0
100126                   D       pipecl  0xfffff800366ef5f0  syz-executor.0
  806   799   806     0  Ss      select  0xfffff80003914e40  dhclient
  802     1   802     0  Ss      select  0xfffff80003915040  dhclient
  799   792   410    65  S       select  0xfffff8000343c440  dhclient
  792   410   410     0  S       wait    0xfffff800365a3000  sh
  777   775   777     0  Ss      nanslp  0xffffffff824fc1e1  syz-executor.0
  775   773   773     0  S       (threaded)                  syz-execprog
100093                   S       uwait   0xfffff80003c32180  syz-execprog
100104                   S       uwait   0xfffff80003c32480  syz-execprog
100105                   S       uwait   0xfffff80003c31800  syz-execprog
100106                   S       uwait   0xfffff80003c31a00  syz-execprog
100107                   S       uwait   0xfffff80003c31100  syz-execprog
100108                   S       uwait   0xfffff800038f3980  syz-execprog
100109                   S       uwait   0xfffff800038f3a80  syz-execprog
100110                   S       kqread  0xfffff80003de8200  syz-execprog
100111                   S       uwait   0xfffff800038f3c80  syz-execprog
  773   771   773     0  Ss      pause   0xfffff80003b450a8  csh
  771   668   771     0  Ss      select  0xfffff8000343c340  sshd
  734     1   734     0  Ss+     ttyin   0xfffff800032cacb0  getty
  733     1   733     0  Ss+     ttyin   0xfffff800032c80b0  getty
  732     1   732     0  Ss+     ttyin   0xfffff800032c84b0  getty
  731     1   731     0  Ss+     ttyin   0xfffff800032c88b0  getty
  730     1   730     0  Ss+     ttyin   0xfffff800032c8cb0  getty
  729     1   729     0  Ss+     ttyin   0xfffff800032c90b0  getty
  728     1   728     0  Ss+     ttyin   0xfffff800032c94b0  getty
  727     1   727     0  Ss+     ttyin   0xfffff800032c98b0  getty
  726     1   726     0  Ss+     ttyin   0xfffff800032c9cb0  getty
  672     1   672     0  Ss      nanslp  0xffffffff824fc1e1  cron
  668     1   668     0  Ss      select  0xfffff8000343c5c0  sshd
  481     1   481     0  Ss      select  0xfffff8000343c140  syslogd
  410     1   410     0  Ss      wait    0xfffff8000397aa60  devd
  409     1   409    65  Ss      select  0xfffff80003915340  dhclient
  324     1   324     0  Ss      select  0xfffff800039154c0  dhclient
  321     1   321     0  Ss      select  0xfffff8000343c4c0  dhclient
   21     0     0     0  DL      syncer  0xffffffff825d26b0  [syncer]
   20     0     0     0  DL      vlruwt  0xfffff8000340d000  [vnlru]
   19     0     0     0  DL      (threaded)                  [bufdaemon]
100063                   D       qsleep  0xffffffff825d1b58  [bufdaemon]
100064                   D       -       0xffffffff8200a900  [bufspacedaemon-0]
100080                   D       sdflush 0xfffff80003b4a0e8  [/ worker]
   18     0     0     0  DL      psleep  0xffffffff825ed008  [vmdaemon]
   17     0     0     0  DL      (threaded)                  [pagedaemon]
100061                   D       psleep  0xffffffff82618d98  [dom0]
100067                   D       launds  0xffffffff82618da4  [laundry: dom0]
100068                   D       umarcl  0xffffffff8152b190  [uma]
   16     0     0     0  DL      -       0xffffffff82357e20  [rand_harvestq]
   15     0     0     0  DL      waiting 0xffffffff8265e370  [sctp_iterator]
    9     0     0     0  DL      -       0xffffffff825d155c  [soaiod4]
    8     0     0     0  DL      -       0xffffffff825d155c  [soaiod3]
    7     0     0     0  DL      -       0xffffffff825d155c  [soaiod2]
    6     0     0     0  DL      -       0xffffffff825d155c  [soaiod1]
    5     0     0     0  DL      (threaded)                  [cam]
100031                   D       -       0xffffffff822331c0  [doneq0]
100060                   D       -       0xffffffff82233088  [scanner]
    4     0     0     0  DL      crypto_ 0xfffff800032d4090  [crypto returns 1]
    3     0     0     0  DL      crypto_ 0xfffff800032d4030  [crypto returns 0]
    2     0     0     0  DL      crypto_ 0xffffffff825e7648  [crypto]
   14     0     0     0  DL      seqstat 0xfffff80003254c88  [sequencer 00]
   13     0     0     0  DL      (threaded)                  [geom]
100022                   D       -       0xffffffff82617390  [g_event]
100023                   D       -       0xffffffff826173a0  [g_up]
100024                   D       -       0xffffffff82617398  [g_down]
   12     0     0     0  WL      (threaded)                  [intr]
100005                   I                                   [swi6: Giant taskq]
100007                   I                                   [swi5: fast taskq]
100011                   I                                   [swi6: task queue]
100017                   I                                   [swi4: clock (0)]
100018                   I                                   [swi4: clock (1)]
100019                   I                                   [swi3: vm]
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                                   [irq1: atkbd0]
100046                   I                                   [irq12: psm0]
100047                   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    0xfffff800031ea530  [init]
   10     0     0     0  DL      audit_w 0xffffffff8265f000  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff82606b68  [swapper]
100006                   D       -       0xfffff800031d4400  [thread taskq]
100008                   D       -       0xfffff800031df600  [config_0]
100009                   D       -       0xfffff800031d4100  [kqueue_ctx taskq]
100010                   D       -       0xfffff800031d4000  [aiod_kick taskq]
100012                   D       -       0xfffff800031df100  [softirq_0]
100013                   D       -       0xfffff800031dee00  [softirq_1]
100014                   D       -       0xfffff800031dec00  [if_io_tqg_0]
100015                   D       -       0xfffff800031dea00  [if_io_tqg_1]
100016                   D       -       0xfffff800031de800  [if_config_tqg_0]
100021                   D       -       0xfffff800031d3800  [firmware taskq]
100026                   D       -       0xfffff800031d3700  [crypto_0]
100027                   D       -       0xfffff800031d3700  [crypto_1]
100041                   D       -       0xfffff800031d3100  [vtnet0 rxq 0]
100042                   D       -       0xfffff800031d3000  [vtnet0 txq 0]
100043                   D       -       0xfffff800031d2e00  [vtnet0 rxq 1]
100044                   D       -       0xfffff800031d2d00  [vtnet0 txq 1]
100048                   D       -       0xfffff800031d2600  [mca taskq]
100052                   D       -       0xffffffff824faf61  [deadlkres]
100055                   D       -       0xfffff800039aa100  [acpi_task_0]
100056                   D       -       0xfffff800039aa100  [acpi_task_1]
100057                   D       -       0xfffff800039aa100  [acpi_task_2]
100059                   D       -       0xfffff800031d3600  [CAM taskq]
db> show all locks
Process 811 (syz-executor.0) thread 0xfffff800366f36e0 (100125)
exclusive sleep mutex pipe mutex (pipe mutex) r = 0 (0xfffff800366ef8c0) locked @ /syzkaller/managers/main/kernel/sys/kern/sys_pipe.c:836
db> show malloc
              Type        InUse        MemUse     Requests
            devbuf         4200         4764K         4227
             vtbuf           24         1968K           46
           callout            3         1672K            3
              kobj          332         1328K          488
            newblk           11         1027K          427
          vfscache            4         1025K            4
               pcb           22          537K           78
          inodedep           15          519K           89
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
              intr            4          388K            4
           subproc          111          220K          876
            acpica         1674          185K        47809
         vnet_data            1          168K            1
           pagedep            6          130K           31
        tfo_ccache            1          128K            1
         sysctloid         2038          107K         2098
               sem            4          106K            4
            DEVFS1          102          102K          113
               bus          948           77K         2905
            linker          205           76K          222
          mtx_pool            2           72K            2
          syncache            1           68K            1
           UMAHash            3           67K            3
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          493           62K          494
          filedesc            5           37K           27
               BPF           19           36K           19
        gtaskqueue           22           34K           22
         hostcache            1           32K            1
               shm            1           32K            1
            DEVFS3          121           31K          131
               msg            4           30K            4
              umtx          240           30K          240
           kdtrace          152           30K         1692
        DEVFS_RULE           56           27K           56
            kbdmux            6           22K            6
              vmem            3           19K            4
              temp           22           17K         1680
         ufs_mount            3           17K            4
              proc            3           17K            3
            ifaddr           43           17K           43
               tty           16           16K           16
           tidhash            1           16K            1
           ithread           87           15K           87
            bus-sc           26           13K         1128
            KTRACE          100           13K          100
              kenv           95           12K           99
      eventhandler          122           11K          122
         pfs_nodes           20           10K           20
              GEOM           60           10K          487
              rman           77            9K          418
         bmsafemap            2            9K           55
           devstat            4            9K            4
              UART           12            9K           12
               rpc            2            8K            2
             shmfd            1            8K            1
       pfs_vncache            1            8K            1
              cred           30            8K          287
     audit_evclass          230            8K          288
           lltable           20            7K           20
             ifnet            4            7K            4
           CAM DEV            3            6K          508
       ether_multi           73            6K           78
                vt           11            6K           11
            kqueue           49            6K          816
            sglist            5            6K            5
         CAM queue            5            6K         1522
         in6_multi           41            5K           41
          routetbl           37            5K           41
       ufs_dirhash           24            5K           24
            plimit           18            5K          420
         taskqueue           42            5K           42
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
             hhook           13            4K           13
          terminal           11            3K           11
           session           22            3K           39
              pgrp           22            3K           39
           acpisem           20            3K           20
           uidinfo            5            3K            8
            select           19            3K           19
         proc-args           41            3K          520
             lockf           20            3K           39
        local_apic            1            2K            1
           io_apic            1            2K            1
         ipsec-saq            2            2K            2
           CAM XPT           22            2K          542
            Unitno           25            2K           39
            ip6ndp            8            2K            9
           acpidev           20            2K           20
            crypto            2            2K            2
               msi            9            2K            9
            diradd            8            1K           52
       ipsecpolicy            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
          sctp_ifa            8            1K            8
             clone            8            1K            8
              cdev            4            1K            4
      NFSD session            1            1K            1
        CAM periph            4            1K          270
          in_multi            3            1K            4
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           86
          pci_link           10            1K           10
            dirrem            5            1K           34
             mkdir            5            1K           32
          freefile            5            1K           31
           CAM SIM            2            1K            2
           softdep            1            1K            1
          indirdep            2            1K            4
    chacha20random            1            1K            1
             epoch            4            1K            4
 encap_export_host            8            1K            8
               mld            3            1K            3
          sctp_ifn            3            1K            3
              igmp            3            1K            3
              pfil            3            1K            3
               tun            4            1K            4
               osd            3            1K            9
            DEVFSP            5            1K            5
          freework            2            1K           31
          freeblks            1            1K           30
            vnodes            1            1K            1
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
       inpcbpolicy            7            1K          147
            feeder            7            1K            7
         newdirblk            3            1K           16
        loginclass            3            1K            3
            apmdev            1            1K            1
          atkbddev            2            1K            2
          pmchooks            1            1K            1
            prison            4            1K            4
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
          CAM path            4            1K         1030
            soname            4            1K         5528
          nexusdev            5            1K            5
           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
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          filecaps            2            1K           77
           entropy            1            1K           39
          p1003.1b            1            1K            1
          ppbusdev            0            0K            0
agtiapi_MemAlloc malloc            0            0K            0
    osti_cacheable            0            0K            0
        madt_table            0            0K            2
          tempbuff            0            0K            0
          tempbuff            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
         vm_pgdata            0            0K            0
           jblocks            0            0K            0
          savedino            0            0K           16
          sentinel            0            0K            0
            jfsync            0            0K            0
            jtrunc            0            0K            0
             sbdep            0            0K            8
           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
          freefrag            0            0K            5
        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            5
         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            5
         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
       vnodemarker            0            0K           70
               mpr            0            0K            0
            statfs            0            0K          223
       export_host            0            0K            0
        cl_savebuf            0            0K            2
            biobuf            0            0K            0
              aios            0            0K            0
               lio            0            0K            0
               acl            0            0K            0
            mfibuf            0            0K            0
          mbuf_tag            0            0K           48
              accf            0            0K            0
               pts            0            0K            0
               iov            0            0K        13341
          ioctlops            0            0K           90
           Witness            0            0K            0
             stack            0            0K            0
        md_sectors            0            0K            0
              sbuf            0            0K          364
           md_disk            0            0K            0
        compressor            0            0K            0
           malodev            0            0K            0
              SWAP            0            0K            0
               LED            0            0K            0
         sysctltmp            0            0K          572
            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
           CAM CCB            0            0K         1899
               PUC            0            0K            0
db> show ktr
No such command; use "help" to list available commands

Crashes (11):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-freebsd-main 2019/11/03 08:10 freebsd 440ae126f5cb d603afc9 console log report syz
ci-freebsd-main 2019/11/01 10:44 freebsd 6c69c9389300 a41ca8fa console log report syz
ci-freebsd-main 2019/10/28 11:15 freebsd 4c3dd4e31966 25bb509e console log report syz
ci-freebsd-i386 2019/11/03 05:57 freebsd 440ae126f5cb d603afc9 console log report syz
ci-freebsd-i386 2019/11/01 08:34 freebsd 6c69c9389300 a41ca8fa console log report syz
ci-freebsd-i386 2019/10/28 10:57 freebsd 4c3dd4e31966 25bb509e console log report syz
ci-freebsd-main 2019/09/20 19:41 freebsd 14aef6dfca96 d96e88f3 console log report
ci-freebsd-i386 2019/11/03 02:25 freebsd 440ae126f5cb d603afc9 console log report
ci-freebsd-i386 2019/11/01 01:15 freebsd 6c69c9389300 a41ca8fa console log report
ci-freebsd-i386 2019/10/29 20:53 freebsd b47a3a5a27e9 5ea87a66 console log report
ci-freebsd-i386 2019/10/28 04:45 freebsd 4c3dd4e31966 25bb509e console log report
* Struck through repros no longer work on HEAD.