syzbot


panic: ASan: Invalid access, 8-byte read in kern_sendit

Status: fixed on 2021/09/19 21:04
Reported-by: syzbot+7cc64cd0c49605acd421@syzkaller.appspotmail.com
Fix commit: fea1a98ead91 freebsd32: Fix a double copyin in sendmsg() and recvmsg()
First crash: 548d, last: 508d

Sample crash report:
panic: ASan: Invalid access, 8-byte read at 0xfffffe00589e6f88, MallocRedZone(fb)
cpuid = 1
time = 1628349600
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe00a1b802d0
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe00a1b80430
vpanic() at vpanic+0x2c5/frame 0xfffffe00a1b80510
panic() at panic+0xb5/frame 0xfffffe00a1b805d0
__asan_load8_noabort() at __asan_load8_noabort+0x376/frame 0xfffffe00a1b80690
kern_sendit() at kern_sendit+0x478/frame 0xfffffe00a1b807f0
freebsd32_sendmsg() at freebsd32_sendmsg+0x559/frame 0xfffffe00a1b809f0
ia32_syscall() at ia32_syscall+0x41f/frame 0xfffffe00a1b80bf0
int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0xfbfbaf78
KDB: enter: panic
[ thread pid 7026 tid 106356 ]
Stopped at      kdb_enter+0x6b: movq    $0,0x28eba0a(%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         0x28b0dede6adb9ded
rdx                    0x40001
rbx                          0
rsp         0xfffffe00a1b80410
rbp         0xfffffe00a1b80430
rsi                          0
rdi         0xfffffe009e4b6ce8
r8                         0x3
r9          0xfffffe00a1b7ff48
r10                          0
r11         0xfffffe00a8728c50
r12         0xfffffe00a8728740
r13         0xfffffe00a1b80401
r14         0xffffffff82c612e0  .str.18
r15         0xffffffff82c612e0  .str.18
rip         0xffffffff8179f92b  kdb_enter+0x6b
rflags                0x200046  kernload+0x46
kdb_enter+0x6b: movq    $0,0x28eba0a(%rip)
db> show proc
Process 7026 (syz-executor.2) at 0xfffffe00a4932a70:
 state: NORMAL
 uid: 0  gids: 0, 0, 5
 parent: pid 785 at 0xfffffe009e988a70
 ABI: FreeBSD ELF32
 flag: 0x10000080  flag2: 0
 arguments: /root/syz-executor.2
 reaper: 0xfffffe0053d4f538 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffffe00a844a000
   (map 0xfffffe00a844a000)
   (map.pmap 0xfffffe00a844a0c0)
   (pmap 0xfffffe00a844a120)
 threads: 5
105987                   Run     CPU 0                       syz-executor.2
106346                   S       connec  0xfffffe00a87bf490  syz-executor.2
106350                   S       connec  0xfffffe00a87bfbf0  syz-executor.2
106356                   Run     CPU 1                       syz-executor.2
106357                   CanRun                              syz-executor.2
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 7026   785   785     0  R       (threaded)                  syz-executor.2
105987                   Run     CPU 0                       syz-executor.2
106346                   S       connec  0xfffffe00a87bf490  syz-executor.2
106350                   S       connec  0xfffffe00a87bfbf0  syz-executor.2
106356                   Run     CPU 1                       syz-executor.2
106357                   CanRun                              syz-executor.2
 6622     1  6622    65  Ss      select  0xfffffe00a8729a40  dhclient
 5499     1  5499     0  Ss      select  0xfffffe00a7d35240  dhclient
 5496     1  5496     0  Ss      select  0xfffffe00a7d350c0  dhclient
 5477     1  5477    65  Ss      select  0xfffffe00a7d947c0  dhclient
 3932     1  3932     0  Ss      select  0xfffffe00a7d35540  dhclient
 3916     1  3916     0  Ss      select  0xfffffe00a7d946c0  dhclient
 3802     1  3802    65  Ss      select  0xfffffe00a7d355c0  dhclient
 2858     0     0     0  DL      (threaded)                  [zfskern]
102002                   D       t->zthr 0xfffffe00a7c6ae48  [arc_evict]
102092                   D       t->zthr 0xfffffe00a7c6ad48  [arc_reap]
102093                   D       -       0xfffffe009e876700  [dbu_evict]
102094                   D       dbuf_ev 0xffffffff85a9df80  [dbuf_evict_thread]
102095                   D       -       0xfffffe009e876600  [z_vdev_file_0]
102096                   D       -       0xfffffe009e876600  [z_vdev_file_1]
102097                   D       -       0xfffffe009e876600  [z_vdev_file_2]
102098                   D       -       0xfffffe009e876600  [z_vdev_file_3]
102099                   D       -       0xfffffe009e876600  [z_vdev_file_4]
102100                   D       -       0xfffffe009e876600  [z_vdev_file_5]
102101                   D       -       0xfffffe009e876600  [z_vdev_file_6]
102102                   D       -       0xfffffe009e876600  [z_vdev_file_7]
102103                   D       -       0xfffffe009e876600  [z_vdev_file_8]
102104                   D       -       0xfffffe009e876600  [z_vdev_file_9]
102105                   D       -       0xfffffe009e876600  [z_vdev_file_10]
102106                   D       -       0xfffffe009e876600  [z_vdev_file_11]
102107                   D       -       0xfffffe009e876600  [z_vdev_file_12]
102108                   D       -       0xfffffe009e876600  [z_vdev_file_13]
102109                   D       -       0xfffffe009e876600  [z_vdev_file_14]
102110                   D       -       0xfffffe009e876600  [z_vdev_file_15]
102111                   D       l2arc_f 0xffffffff85a8cf80  [l2arc_feed_thread]
102112                   D       -       0xfffffe009e876500  [zfsvfs]
102113                   S       zevent_ 0xffffffff85a9ef40  [sysevent]
 2772     0     0     0  DL      aiordy  0xfffffe009e9f2538  [aiod4]
 2770     0     0     0  DL      aiordy  0xfffffe0056aa3000  [aiod3]
 2769     0     0     0  DL      aiordy  0xfffffe009e4f7000  [aiod2]
 2768     0     0     0  DL      aiordy  0xfffffe009e9f2000  [aiod1]
 2652     1  2652     0  Ss      select  0xfffffe00a49853c0  dhclient
 2632     1  2632     0  Ss      select  0xfffffe00a4985540  dhclient
 2560     1  2560    65  Ss      select  0xfffffe009e9cdcc0  dhclient
 1576     1  1576     0  Ss      select  0xfffffe009e9cdbc0  dhclient
 1568     1  1568     0  Ss      select  0xfffffe009e470c40  dhclient
  794   780   794     0  Ss      piperd  0xfffffe009e8a9ba0  syz-executor.1
  785   780   785     0  Ss      nanslp  0xffffffff84058201  syz-executor.2
  784   780   784     0  Ss      piperd  0xfffffe009e97e8b8  syz-executor.3
  783   780   783     0  Ss      piperd  0xfffffe009e9635d0  syz-executor.0
  780   778   778     0  S       (threaded)                  syz-fuzzer
100100                   S       uwait   0xfffffe0056ff8680  syz-fuzzer
100118                   S       uwait   0xfffffe009e35d400  syz-fuzzer
100119                   S       uwait   0xfffffe009e35d500  syz-fuzzer
100120                   S       kqread  0xfffffe009e43ea00  syz-fuzzer
100121                   S       uwait   0xfffffe009e35d700  syz-fuzzer
100122                   S       uwait   0xfffffe009e35d800  syz-fuzzer
100123                   S       uwait   0xfffffe009e35d900  syz-fuzzer
100124                   S       uwait   0xfffffe009e4c5e80  syz-fuzzer
100125                   S       uwait   0xfffffe009e35d000  syz-fuzzer
103907                   S       uwait   0xfffffe009e4c5680  syz-fuzzer
  778   776   778     0  Ss      pause   0xfffffe009e3e75e8  csh
  776   694   776     0  Ss      select  0xfffffe009e4c5b40  sshd
  760     1   760     0  Ss+     ttyin   0xfffffe0056fe2cb0  getty
  759     1   759     0  Ss+     ttyin   0xfffffe00575fc8b0  getty
  758     1   758     0  Ss+     ttyin   0xfffffe00575fccb0  getty
  757     1   757     0  Ss+     ttyin   0xfffffe00583e10b0  getty
  756     1   756     0  Ss+     ttyin   0xfffffe00583e14b0  getty
  755     1   755     0  Ss+     ttyin   0xfffffe00583e18b0  getty
  754     1   754     0  Ss+     ttyin   0xfffffe00583e1cb0  getty
  753     1   753     0  Ss+     ttyin   0xfffffe005752d0b0  getty
  752     1   752     0  Ss+     ttyin   0xfffffe005752d4b0  getty
  698     1   698     0  Ss      nanslp  0xffffffff84058200  cron
  694     1   694     0  Ss      select  0xfffffe005883e040  sshd
  507     1   507     0  Ss      select  0xfffffe009e35dd40  syslogd
  436     1   436     0  Ss      select  0xfffffe0056ff8140  devd
  435     1   435    65  Ss      select  0xfffffe005883e0c0  dhclient
  350     1   350     0  Ss      select  0xfffffe005883ee40  dhclient
  347     1   347     0  Ss      select  0xfffffe0056ff81c0  dhclient
   23     0     0     0  DL      vlruwt  0xfffffe0058511000  [vnlru]
   22     0     0     0  DL      syncer  0xffffffff84180380  [syncer]
   21     0     0     0  DL      (threaded)                  [bufdaemon]
100085                   D       qsleep  0xffffffff8417e1a0  [bufdaemon]
100088                   D       -       0xffffffff83411f80  [bufspacedaemon-0]
100097                   D       sdflush 0xfffffe0058910ce8  [/ worker]
   20     0     0     0  DL      psleep  0xffffffff841b6640  [vmdaemon]
   19     0     0     0  DL      (threaded)                  [pagedaemon]
100083                   D       psleep  0xffffffff841aa178  [dom0]
100089                   D       launds  0xffffffff841aa184  [laundry: dom0]
100090                   D       umarcl  0xffffffff81e9a570  [uma]
   18     0     0     0  DL      -       0xffffffff83e0f320  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff84a54460  [sctp_iterator]
   16     0     0     0  DL      pftm    0xffffffff84d92e20  [pf purge]
   15     0     0     0  DL      -       0xffffffff841794c0  [soaiod4]
    9     0     0     0  DL      -       0xffffffff841794c0  [soaiod3]
    8     0     0     0  DL      -       0xffffffff841794c0  [soaiod2]
    7     0     0     0  DL      -       0xffffffff841794c0  [soaiod1]
    6     0     0     0  DL      (threaded)                  [cam]
100048                   D       -       0xffffffff83c94ac0  [doneq0]
100049                   D       -       0xffffffff83c94a40  [async]
100082                   D       -       0xffffffff83c948c0  [scanner]
   14     0     0     0  DL      seqstat 0xfffffe0056a9dc88  [sequencer 00]
    5     0     0     0  DL      crypto_ 0xfffffe0053c01b80  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffffe0053c01b30  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff841a4220  [crypto]
   13     0     0     0  DL      (threaded)                  [geom]
100039                   D       -       0xffffffff8402b7c0  [g_event]
100040                   D       -       0xffffffff8402b800  [g_up]
100041                   D       -       0xffffffff8402b840  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100029                   D       -       0xfffffe0053df5300  [thr_0]
100030                   D       -       0xfffffe0053df5380  [thr_1]
100031                   D       -       0xffffffff8417a748  [alloc_0]
   12     0     0     0  WL      (threaded)                  [intr]
100012                   I                                   [swi6: task queue]
100013                   I                                   [swi6: Giant taskq]
100015                   I                                   [swi5: fast taskq]
100032                   I                                   [swi4: clock (0)]
100033                   I                                   [swi4: clock (1)]
100034                   I                                   [swi1: netisr 0]
100035                   I                                   [swi3: vm]
100036                   I                                   [swi1: hpts]
100037                   I                                   [swi1: hpts]
100050                   I                                   [irq24: virtio_pci0]
100051                   I                                   [irq25: virtio_pci0]
100052                   I                                   [irq26: virtio_pci0]
100053                   I                                   [irq27: virtio_pci0]
100054                   I                                   [irq28: virtio_pci1]
100055                   I                                   [irq29: virtio_pci1]
100056                   I                                   [irq30: virtio_pci1]
100057                   I                                   [irq31: virtio_pci1]
100058                   I                                   [irq32: virtio_pci1]
100063                   I                                   [irq10: virtio_pci2]
100065                   I                                   [irq1: atkbd0]
100066                   I                                   [irq12: psm0]
100067                   I                                   [swi0: uart uart++]
100075                   I                                   [swi1: pf send]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffffe0053d4f538  [init]
   10     0     0     0  DL      audit_w 0xffffffff841a51c0  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff8402c6c0  [swapper]
100005                   D       -       0xfffffe0053de6e00  [if_config_tqg_0]
100006                   D       -       0xfffffe0053de6d00  [softirq_0]
100007                   D       -       0xfffffe0053de6c00  [softirq_1]
100008                   D       -       0xfffffe0053de6b00  [if_io_tqg_0]
100009                   D       -       0xfffffe0053de6a00  [if_io_tqg_1]
100010                   D       -       0xfffffe0053de6900  [in6m_free taskq]
100011                   D       -       0xfffffe0053de6800  [deferred_unmount ta]
100014                   D       -       0xfffffe0053de6500  [thread taskq]
100016                   D       -       0xfffffe0053de6300  [linuxkpi_irq_wq]
100017                   D       -       0xfffffe0053de6200  [kqueue_ctx taskq]
100018                   D       -       0xfffffe0053de6100  [aiod_kick taskq]
100019                   D       -       0xfffffe0053de6000  [pci_hp taskq]
100020                   D       -       0xfffffe0053df6e00  [inm_free taskq]
100021                   D       -       0xfffffe0053df6d00  [linuxkpi_short_wq_0]
100022                   D       -       0xfffffe0053df6d00  [linuxkpi_short_wq_1]
100023                   D       -       0xfffffe0053df6d00  [linuxkpi_short_wq_2]
100024                   D       -       0xfffffe0053df6d00  [linuxkpi_short_wq_3]
100025                   D       -       0xfffffe0053df6c00  [linuxkpi_long_wq_0]
100026                   D       -       0xfffffe0053df6c00  [linuxkpi_long_wq_1]
100027                   D       -       0xfffffe0053df6c00  [linuxkpi_long_wq_2]
100028                   D       -       0xfffffe0053df6c00  [linuxkpi_long_wq_3]
100038                   D       -       0xfffffe0053df6a00  [firmware taskq]
100042                   D       -       0xfffffe0053df6000  [crypto_0]
100043                   D       -       0xfffffe0053df6000  [crypto_1]
100059                   D       -       0xfffffe0056b83500  [vtnet0 rxq 0]
100060                   D       -       0xfffffe0056b83400  [vtnet0 txq 0]
100061                   D       -       0xfffffe0056b83300  [vtnet0 rxq 1]
100062                   D       -       0xfffffe0056b83200  [vtnet0 txq 1]
100064                   D       vtbslp  0xfffffe0056fb0480  [virtio_balloon]
100068                   D       -       0xfffffe0056fc6100  [mca taskq]
100073                   D       -       0xffffffff82c68261  [deadlkres]
100077                   D       -       0xfffffe0056a42900  [acpi_task_0]
100078                   D       -       0xfffffe0056a42900  [acpi_task_1]
100079                   D       -       0xfffffe0056a42900  [acpi_task_2]
100081                   D       -       0xfffffe0056a42700  [CAM taskq]
102086                   D       -       0xfffffe009e874b00  [system_taskq_0]
102087                   D       -       0xfffffe009e874b00  [system_taskq_1]
102088                   D       -       0xfffffe009e874600  [system_delay_taskq_]
102089                   D       -       0xfffffe009e874600  [system_delay_taskq_]
102090                   D       -       0xfffffe009e876800  [arc_prune_0]
102091                   D       -       0xfffffe009e876800  [arc_prune_1]
db> show all locks
Process 7026 (syz-executor.2) thread 0xfffffe00a8726ac0 (105987)
exclusive sleep mutex umtxql (umtxql) r = 0 (0xffffffff840791c0) locked @ /syzkaller/managers/i386/kernel/sys/kern/kern_umtx.c:1278
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
            linker          379        10017K          427
            devbuf         4216         4338K         4245
          tcp_hpts            6         3201K            6
           solaris          129         2804K          199
         sysctloid        46320         2732K        46423
               pcb         1971         2720K        18894
             vtbuf           24         1968K           46
              kobj          326         1304K          485
            newblk            9         1026K         6639
          vfscache            3         1025K            3
         sctp_stro          963          963K         4281
         sctp_atcl         1933          725K        13113
          inodedep          150          568K         6148
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          150          292K         7122
              vmem            3          274K            5
            acpica         1674          184K        55752
         vnet_data            1          168K            1
           tidhash            3          141K            3
           pagedep            9          130K         6068
        tfo_ccache            1          128K            1
         sctp_atky         2896          121K        17555
            DEVFS1          108          108K          125
               sem            4          106K            4
          filedesc           12           89K        12119
               BPF           46           88K           46
               bus          984           80K         3475
          mtx_pool            2           72K            2
          syncache            1           68K            1
            module          513           65K          513
          acpitask            1           64K            1
       ddb_capture            1           64K            1
           kdtrace          259           53K        13394
              umtx          418           53K          418
            dirrem          141           36K         6056
              temp           35           33K         2926
         hostcache            1           32K            1
               shm            1           32K            2
            DEVFS3          127           32K          137
         sctp_athm         1933           31K        13298
          sctp_map         1926           31K         8562
               msg            4           30K            4
         sctp_timw          102           26K          102
        gtaskqueue           18           26K           18
            kbdmux            6           22K            6
            ifaddr           71           21K           73
        DEVFS_RULE           56           20K           56
          freefile          141           18K         6054
        kstat_data           17           17K           17
         ufs_mount            4           17K            5
              proc            3           17K            3
          routetbl          137           17K          433
               tty           16           16K           16
           ithread           99           16K           99
            bus-sc           33           14K         1692
           lltable           42           13K           70
       ether_multi          157           13K          167
            KTRACE          100           13K          100
             ifnet            7           13K            7
              kenv           95           12K           95
      eventhandler          136           12K          136
         CAM queue            5           11K         1528
              GEOM           61           10K          493
              rman           84           10K          425
         in6_multi           71            9K           71
         taskqueue           81            9K           81
         bmsafemap            2            9K         6112
              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          237            8K          295
               UMA          365            7K          365
              cred           26            7K          242
            kqueue           67            7K         7042
            sglist            5            7K            5
           CAM DEV            3            6K          510
            plimit           24            6K          428
            DEVFSP           80            5K           88
       ufs_dirhash           24            5K           24
           session           35            5K           50
          pf_ifnet           10            5K           19
                vt           11            5K           11
           pwddesc           65            5K         7036
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
          kcovinfo           64            4K           68
           acpisem           28            4K           28
             selfd           55            4K       100130
             lockf           32            4K           57
             hhook           15            4K           17
         proc-args           52            3K          675
          terminal           11            3K           11
            select           19            3K           58
           uidinfo            3            3K            9
        local_apic            1            2K            1
           io_apic            1            2K            1
       fpukern_ctx            2            2K            2
         ipsec-saq            2            2K            2
            ip6ndp           12            2K           15
          sctp_ifa           14            2K           15
            Unitno           27            2K           47
           CAM XPT           22            2K          543
          in_multi            6            2K            8
       vnodemarker            3            2K           61
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
               msi            9            2K            9
             clone            9            2K            9
               tun            7            2K            7
          freework            5            2K         6058
           softdep            1            1K            1
             mkdir            8            1K        12096
          freeblks            4            1K         6057
            sahead            1            1K            1
          secasvar            1            1K            1
             nhops            6            1K            8
      NFSD session            1            1K            1
        CAM periph            4            1K          271
               osd           33            1K         2504
          sctp_ifn            6            1K           15
             ipsec            3            1K            3
               mld            6            1K            6
              igmp            6            1K            6
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           89
          pci_link           10            1K           10
            crypto            4            1K            4
 encap_export_host           12            1K           12
          procdesc            5            1K           18
       inpcbpolicy           18            1K         3417
         newdirblk            4            1K         6048
            diradd            4            1K         6095
              pfil            4            1K            4
              cdev            2            1K            2
    chacha20random            1            1K            1
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
            vnodes            1            1K            1
           CAM SIM            2            1K            2
              ktls            1            1K            1
            prison            8            1K            8
            feeder            7            1K            7
             taskq            2            1K            2
           tcpfunc            3            1K            3
        loginclass            3            1K            6
       lkpikmalloc            5            1K            6
            soname            6            1K        13220
        aesni_data            2            1K            2
            apmdev            1            1K            1
          atkbddev            2            1K            2
     CAM dev queue            2            1K            2
             xform            2            1K           42
 CAM I/O Scheduler            1            1K            1
          CAM path            4            1K         1034
          pmchooks            1            1K            1
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    9389     451      819534       0     254   40304640        0
              mbuf    256   10109     496     1262304       0     254    2714880        0
              pbuf   2624       0     957           0       0       2    2511168        0
         sctp_asoc   2288     963      62        4281       0     254    2345200        0
        malloc-128    128   15327    1599       27607       0     126    2166528        0
       malloc-2048   2048     974      12        8870       0       8    2019328        0
          BUF TRIE    144     224   11536         909       0      62    1693440        0
        malloc-384    384    4274       6        4628       0      30    1643520        0
        RADIX NODE    144   11068     267      202550       0      62    1632240        0
      mbuf_cluster   2048     735       1         735       0     254    1507328        0
       malloc-4096   4096     326       2         497       0       2    1343488        0
           sctp_ep   1280     970      77        8675       0     254    1340160        0
       UMA Slabs 0    112   11818      23       11818       0     126    1326192        0
         vmem btag     56   19430      57       19430       0     254    1091272        0
       malloc-1024   1024     964      28        4282       0      16    1015808        0
        malloc-256    256     165    3240       24193       0      62     871680        0
        malloc-384    384    1934      56       13114       0      30     764160        0
        sctp_raddr    736     963      71        4281       0     254     761024        0
        malloc-384    384     181    1569        6230       0      30     672000        0
         FFS inode   1160     515      24        6569       0       8     625240        0
      malloc-65536  65536       4       2         316       0       1     393216        0
            lkpimm    168       1    2327           1       0      62     391104        0
          lkpicurr    168       2    2326           2       0      62     391104        0
            THREAD   1808     193      16        6357       0       8     377872        0
         VM OBJECT    264    1255     110      100480       0      30     360360        0
         malloc-64     64    5347      71       12379       0     254     346752        0
       malloc-4096   4096      73       7        7671       0       2     327680        0
        256 Bucket   2048     135      15       15412       0       8     307200        0
         malloc-16     16   18800     200       18946       0     254     304000        0
             VNODE    448     554      76        6610       0      30     282240        0
      malloc-16384  16384      10       7        6237       0       1     278528        0
        malloc-256    256     993      87        8735       0      62     276480        0
         UMA Zones    768     337       2         337       0      16     260352        0
         malloc-32     32    7419     141        8531       0     254     241920        0
            DEVCTL   1024       0     220         155       0       0     225280        0
            socket    944      52     164       13371       0     254     203904        0
        malloc-256    256     360     435        8121       0      62     203520        0
         MAP ENTRY     96    1527     447      377433       0     126     189504        0
       mbuf_packet    256     119     616       11798       0     254     188160        0
        malloc-128    128    1205      66       26038       0     126     162688        0
       malloc-1024   1024     124      24        2182       0      16     151552        0
       S VFS Cache    104    1018     347        7130       0     126     141960        0
       FFS2 dinode    256     515      25        6569       0      62     138240        0
zio_buf_comb_131072 131072       0       1           1       0       1     131072        0
      malloc-65536  65536       2       0           2       0       1     131072        0
      malloc-65536  65536       2       0           2       0       1     131072        0
      malloc-65536  65536       1       1           9       0       1     131072        0
           VMSPACE   2544      37      14        7014       0       4     129744        0
            clpbuf   2624       0      48          52       0      16     125952        0
          UMA Kegs    384     322       1         322       0      30     124032        0
          ksiginfo    112      69     975        1701       0     126     116928        0
        malloc-128    128     877      22        2194       0     126     115072        0
              PROC   1336      64      20        7035       0       8     112224        0
         malloc-64     64    1513     125        7074       0     254     104832        0
        malloc-256    256     339      66       13111       0      62     103680        0
sctp_stream_msg_out    112     826      74        1166       0     254     100800        0
       malloc-8192   8192       8       4         137       0       1      98304        0
         filedesc0   1072      65      26        7036       0       8      97552        0
             tcpcb   1080       4      80        2463       0     254      90720        0
       malloc-4096   4096      22       0          22       0       2      90112        0
         64 Bucket    512     129      39        6924       0      30      86016        0
       malloc-2048   2048      12      28        1046       0       8      81920        0
             g_bio    408       0     180        6963       0      30      73440        0
        128 Bucket   1024      59      12        1327       0      16      72704        0
        malloc-128    128     527      31        4675       0     126      71424        0
         malloc-32     32    1962     180       16373       0     254      68544        0
      malloc-65536  65536       1       0           1       0       1      65536        0
      malloc-32768  32768       0       2         130       0       1      65536        0
      malloc-32768  32768       2       0           2       0       1      65536        0
       malloc-4096   4096      13       3          28       0       2      65536        0
         tcp_inpcb    496      13     107        2463       0     254      59520        0
       malloc-8192   8192       7       0           7       0       1      57344        0
         32 Bucket    256     108     102        5942       0      62      53760        0
         malloc-64     64     584     235        1664       0     254      52416        0
zio_data_buf_16384  16384       0       3           9       0       1      49152        0
            pcpu-8      8    5220     412        5376       0     254      45056        0
         malloc-16     16    2489     261       10505       0     254      44000        0
             NAMEI   1024       0      40       39109       0      16      40960        0
       malloc-8192   8192       5       0           5       0       1      40960        0
         malloc-64     64     144     486      107274       0     254      40320        0
            da_ccb    544       0      70        1901       0      16      38080        0
           DIRHASH   1024      34       2          34       0      16      36864        0
       malloc-4096   4096       9       0           9       0       2      36864        0
             Files     80     244     206       26946       0     126      36000        0
         malloc-16     16    1937     313       13303       0     254      36000        0
     zio_buf_16384  16384       0       2          10       0       1      32768        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-16384  16384       2       0           2       0       1      32768        0
       malloc-8192   8192       2       2           4       0       1      32768        0
       malloc-1024   1024      31       1          31       0      16      32768        0
           pcpu-64     64     492      20         492       0     254      32768        0
        malloc-128    128     157      91        6315       0     126      31744        0
         TURNSTILE    136     210      21         210       0      62      31416        0
              pipe    744      23      17         421       0      16      29760        0
       malloc-2048   2048       7       7          31       0       8      28672        0
       malloc-8192   8192       3       0           3       0       1      24576        0
       malloc-8192   8192       2       1           4       0       1      24576        0
       malloc-1024   1024      18       6          25       0      16      24576        0
    ertt_txseginfo     40       0     606       12476       0     254      24240        0
             KNOTE    160      28     122       85766       0      62      24000        0
            ttyinq    160     135      15         300       0      62      24000        0
          8 Bucket     80      45     255        2338       0     126      24000        0
        sctp_chunk    152     144      12         433       0     254      23712        0
           ttyoutq    256      72      18         160       0      62      23040        0
        SLEEPQUEUE     88     210      46         210       0     126      22528        0
       tcp_bbr_pcb    832       0      27         423       0      16      22464        0
               PWD     32      19     611        6140       0     254      20160        0
         malloc-64     64     183     132       23253       0     254      20160        0
         malloc-32     32     256     374        7585       0     254      20160        0
        malloc-128    128      71      84       12309       0     126      19840        0
       Mountpoints   2752       2       5           2       0       4      19264        0
        malloc-384    384      37      13          37       0      30      19200        0
      malloc-16384  16384       1       0           1       0       1      16384        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-4096   4096       1       3        6238       0       2      16384        0
       malloc-2048   2048       4       4          13       0       8      16384        0
       malloc-2048   2048       4       4           8       0       8      16384        0
       malloc-2048   2048       3       5         111       0       8      16384        0
         malloc-64     64     204      48         243       0     254      16128        0
         16 Bucket    144      58      54         638       0      62      16128        0
      vtnet_tx_hdr     24       0     668      412004       0     254      16032        0
        malloc-128    128      81      43         103       0     126      15872        0
      tcp_rack_pcb    832       0      18          20       0      16      14976        0
       malloc-1024   1024       6       6           6       0      16      12288        0
        malloc-512    512       6      18         254       0      30      12288        0
              ertt     72       4     164        2463       0     126      12096        0
         malloc-32     32     250     128         338       0     254      12096        0
       tcp_bbr_map    128       0      93         609       0     126      11904        0
             ripcb    496       5      19         643       0     254      11904        0
         udp_inpcb    496       6      18         309       0     254      11904        0
              kenv    258      15      30        1044       0      30      11610        0
             unpcb    256      20      25        1241       0     254      11520        0
        malloc-384    384      24       6          26       0      30      11520        0
        malloc-256    256      20      25        8573       0      62      11520        0
        malloc-256    256      34      11          45       0      62      11520        0
        malloc-256    256      28      17         246       0      62      11520        0
        malloc-256    256      14      31         942       0      62      11520        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-1024   1024       1       7          10       0      16       8192        0
       malloc-1024   1024       7       1           7       0      16       8192        0
        malloc-512    512       8       8           9       0      30       8192        0
        malloc-512    512       1      15         315       0      30       8192        0
        malloc-512    512      10       6          10       0      30       8192        0
           rtentry    176      31      15          35       0      62       8096        0
             tcptw     88       3      89           6       0     254       8096        0
              PGRP     88      35      57          50       0     126       8096        0
          rl_entry     40      57     145          57       0     254       8080        0
        sctp_laddr     48       0     168        1418       0     254       8064        0
             udpcb     32       6     246         311       0     254       8064        0
              AIOP     32       4     248           4       0     254       8064        0
         malloc-64     64      59      67          80       0     254       8064        0
         malloc-64     64       8     118          12       0     254       8064        0
         malloc-32     32      35     217        9475       0     254       8064        0
         malloc-32     32     175      77         334       0     254       8064        0
         malloc-32     32      56     196        3468       0     254       8064        0
         malloc-32     32       0     252           8       0     254       8064        0
          4 Bucket     48       6     162         179       0     254       8064        0
          2 Bucket     32      57     195        1086       0     254       8064        0
         malloc-16     16       8     492        6141       0     254       8000        0
         malloc-16     16       6     494           7       0     254       8000        0
         malloc-16     16      24     476          62       0     254       8000        0
         malloc-16     16      57     443       27843       0     254       8000        0
         malloc-16     16       8     492         122       0     254       8000        0
        malloc-128    128      13      49          45       0     126       7936        0
        sctp_readq    152       0      52          69       0     254       7904        0
            itimer    352       0      22           2       0      30       7744        0
     routing nhops    256      27       3          35       0      62       7680        0
        malloc-384    384       0      20          41       0      30       7680        0
           tcp_log    416       0      18           6       0     254       7488        0
     FPU_save_area    832       1       8           1       0      16       7488        0
            cpuset    104       8      54           8       0     126       6448        0
         abd_chunk   4096       1       0           1       0       2       4096        0
 epoch_record pcpu    256       4      12           4       0      62       4096        0
       malloc-4096   4096       1       0           1       0       2       4096        0
       malloc-4096   4096       0       1           2       0       2       4096        0
       malloc-2048   2048       2       0           2       0       8       4096        0
       malloc-2048   2048       0       2           1       0       8       4096        0
        malloc-512    512       2       6           2       0      30       4096        0
        malloc-512    512       1       7           1       0      30       4096        0
        malloc-512    512       1       7           1       0      30       4096        0
        malloc-512    512       6       2           7       0      30       4096        0
           pcpu-16     16       7     249           7       0     254       4096        0
         hostcache     64       1      62           1       0     254       4032        0
          syncache    168       0      24           4       0     254       4032        0
     udplite_inpcb    496       0       8           2       0     254       3968        0
               AIO    208       0      19           1       0      62       3952        0
       UMA Slabs 1    176      10      12          10       0      62       3872        0
             AIOCB    552       0       7           1       0      16       3864        0
        malloc-384    384       1       9           1       0      30       3840        0
        malloc-384    384       3       7           3       0      30       3840        0
            mqnode    416       3       6           3       0      30       3744        0
        KMAP ENTRY     96      18      21          24       0       0       3744        0
              vmem   1856       1       1           1       0       8       3712        0
           SMR CPU     32       3      60           3       0     254       2016        0
        SMR SHARED     24       3      60           3       0     254       1512        0
   zfs_znode_cache    464       0       0           0       0      30          0        0
       sio_cache_2    168       0       0           0       0      62          0        0
       sio_cache_1    152       0       0           0       0      62          0        0
       sio_cache_0    136       0       0           0       0      62          0        0
     zil_zcw_cache     80       0       0           0       0     126          0        0
     zil_lwb_cache    352       0       0           0       0      30          0        0
    dmu_buf_impl_t    408       0       0           0       0      30          0        0
         arc_buf_t     64       0       0           0       0     254          0        0
arc_buf_hdr_t_l2only     96       0       0           0       0     126          0        0
arc_buf_hdr_t_full_crypt    424       0       0           0       0      30          0        0
arc_buf_hdr_t_full    360       0       0           0       0      30          0        0
           dnode_t   1032       0       0           0       0       8          0        0
          sa_cache    296       0       0           0       0      30          0        0
zio_buf_comb_16777216 16777216       0       0           0       0       1          0        0
zio_buf_comb_14680064 14680064       0       0           0       0       1          0        0
zio_buf_comb_12582912 12582912       0       0           0       0       1          0        0
zio_buf_comb_10485760 10485760       0       0           0       0       1          0        0
zio_buf_comb_8388608 8388608       0       0           0       0       1          0        0
zio_buf_comb_7340032 7340032       0       0           0       0       1          0        0
zio_buf_comb_6291456 6291456       0       0           0       0       1          0        0
zio_buf_comb_5242880 5242880       0       0           0       0       1          0        0
zio_buf_comb_4194304 4194304       0       0           0       0       1          0        0
zio_buf_comb_3670016 3670016       0       0           0       0       1          0        0
zio_buf_comb_3145728 3145728       0       0           0       0       1          0        0
zio_buf_comb_2621440 2621440       0       0           0       0       1          0        0
zio_buf_comb_2097152 2097152       0       0           0       0       1          0        0
zio_buf_comb_1835008 1835008       0       0           0       0       1          0        0
zio_buf_comb_1572864 1572864       0       0           0       0       1          0        0
zio_buf_comb_1310720 1310720       0       0           0       0       1          0        0
zio_buf_comb_1048576 1048576       0       0           0       0       1          0        0
zio_buf_comb_917504 917504       0       0           0       0       1          0        0
zio_buf_comb_786432 786432       0       0           0       0       1          0        0
zio_buf_comb_655360 655360       0       0           0       0       1          0        0
zio_buf_comb_524288 524288       0       0           0       0       1          0        0
zio_buf_comb_458752 458752       0       0           0       0       1          0        0
zio_buf_comb_393216 393216       0       0           0       0       1          0        0
zio_buf_comb_327680 327680       0       0           0       0       1          0        0
zio_buf_comb_262144 262144       0       0           0       0       1          0        0
zio_buf_comb_229376 229376       0       0           0       0       1          0        0
zio_buf_comb_196608 196608       0       0           0       0       1          0        0
zio_buf_comb_163840 163840       0       0           0       0       1          0        0
zio_buf_comb_114688 114688       0       0           0       0       1          0        0
zio_buf_comb_98304  98304       0       0           0       0       1          0        0
zio_buf_comb_81920  81920       0       0           0       0       1          0        0
zio_buf_comb_65536  65536       0       0           0       0       1          0        0
zio_buf_comb_57344  57344       0       0           0       0       1          0        0
zio_buf_comb_49152  49152       0       0           0       0       1          0        0
zio_buf_comb_40960  40960       0       0           0       0       1          0        0
zio_buf_comb_32768  32768       0       0           0       0       1          0        0
zio_buf_comb_28672  28672       0       0           0       0       1          0        0
zio_buf_comb_24576  24576       0       0           0       0       1          0        0
zio_buf_comb_20480  20480       0       0           0       0       1          0        0
zio_data_buf_14336  14336       0       0           0       0       1          0        0
     zio_buf_14336  14336       0       0           0       0       1          0        0
zio_data_buf_12288  12288       0       0           0       0       1          0        0
     zio_buf_12288  12288       0       0           0       0       1          0        0
zio_data_buf_10240  10240       0       0           0       0       1          0        0
     zio_buf_10240  10240       0       0           0       0       1          0        0
 zio_data_buf_8192   8192       0       0           0       0       1          0        0
      zio_buf_8192   8192       0       0           0       0       1          0        0
 zio_data_buf_7168   7168       0       0           0       0       1          0        0
      zio_buf_7168   7168       0       0           0       0       1          0        0
 zio_data_buf_6144   6144       0       0           0       0       1          0        0
      zio_buf_6144   6144       0       0           0       0       1          0        0
 zio_data_buf_5120   5120       0       0           0       0       1          0        0
      zio_buf_5120   5120       0       0           0       0       1          0        0
 zio_data_buf_4096   4096       0       0           0       0       2          0        0
      zio_buf_4096   4096       0       0           0       0       2          0        0
 zio_data_buf_3584   3584       0       0           0       0       2          0        0
      zio_buf_3584   3584       0       0           0       0       2          0        0
 zio_data_buf_3072   3072       0       0           0       0       4          0        0
      zio_buf_3072   3072       0       0           0       0       4          0        0
 zio_data_buf_2560   2560       0       0           0       0       4          0        0
      zio_buf_2560   2560       0       0           0       0       4          0        0
 zio_data_buf_2048   2048       0       0           0       0       8          0        0
      zio_buf_2048   2048       0       0           0       0       8          0        0
 zio_data_buf_1536   1536       0       0           0       0       8          0        0
      zio_buf_1536   1536       0       0           0       0       8          0        0
 zio_data_buf_1024   1024       0       0           0       0      16          0        0
      zio_buf_1024   1024       0       0           0       0      16          0        0
  zio_data_buf_512    512       0       0           0       0      30          0        0
       zio_buf_512    512       0       0           0       0      30          0        0
    zio_link_cache     48       0       0           0       0     254          0        0
         zio_cache   1232       0       0           0       0       8          0        0
   ddt_entry_cache    392       0       0           0       0      30          0        0
         ddt_cache  24824       0       0           0       0       1          0        0
metaslab_alloc_trace_cache     72       0       0           0       0     126          0        0
zfs_btree_leaf_cache   4096       0       0           0       0       2          0        0
reference_history_cache      8       0       0           0       0     254          0        0
   reference_cache     40       0       0           0       0     254          0        0
        taskq_zone    192       0       0           0       0      62          0        0
       FFS1 dinode    128       0       0           0       0     126          0        0
           ada_ccb    272       0       0           0       0      30          0        0
             swblk    136       0       0           0       0      62          0        0
          swpctrie    144       0       0           0       0      62          0        0
   cdg_qdiffsample     16       0       0           0       0     254          0        0
   sctp_asconf_ack     48       0       0           0       0     254          0        0
       sctp_asconf     40       0       0           0       0     254          0        0
   pf state scrubs     40       0       0           0       0     254          0        0
   pf frag entries     40       0       0           0       0     254          0        0
          pf frags    248       0       0           0       0      62          0        0
  pf table entries    160       0       0           0       0      62          0        0
pf table entry counters     64       0       0           0       0     254          0        0
   pf source nodes    136       0       0           0       0     254          0        0
     pf state keys     88       0       0           0       0     126          0        0
         pf states    312       0       0           0       0     254          0        0
           pf tags    104       0       0           0       0     126          0        0
          pf mtags     48       0       0           0       0     254          0        0
      tcp_rack_map    112       0       0           0       0     126          0        0
      tcp_log_node    120       0       0           0       0     126          0        0
    tcp_log_bucket    176       0       0           0       0      62          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
               ipq     56       0       0           0       0     254          0        0
    IPsec SA lft_c     16       0       0           0       0     254          0        0
            AIOLIO    272       0       0           0       0      30          0        0
           NCLNODE    592       0       0           0       0      16          0        0
        mqnotifier    216       0       0           0       0      62          0        0
            mvdata     64       0       0           0       0     254          0        0
            mqueue    248       0       0           0       0      62          0        0
        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-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
       malloc-8192   8192       0       0           0       0       1          0        0
       malloc-1024   1024       0       0           0       0      16          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 (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-freebsd-i386 2021/08/07 15:19 freebsd-src c18c74a87c15 6972b106 console log report panic: ASan: Invalid access, 8-byte read in kern_sendit
ci-freebsd-i386 2021/09/16 21:08 freebsd-src 12061d2626e0 7612dc77 console log report panic: ASan: Invalid access, NUM-byte read in kern_sendit
* Struck through repros no longer work on HEAD.