syzbot


panic: ASan: Invalid access, NUM-byte write at ADDR, StackMiddle(f2) (2)

Status: fixed on 2022/04/02 08:59
Reported-by: syzbot+04cee5d8805dfbb63c06@syzkaller.appspotmail.com
Fix commit: 39a22011bbb8 sctp: clear pointer to stack when returning from function.
First crash: 312d, last: 312d
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
freebsd panic: ASan: Invalid access, NUM-byte write at ADDR, StackMiddle(f2) 1 420d 420d 0/2 auto-closed as invalid on 2022/03/13 10:25

Sample crash report:
panic: ASan: Invalid access, 4-byte write at 0xfffffe009ae29620, StackMiddle(f2)
cpuid = 1
time = 126
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe0053bf5650
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe0053bf57b0
vpanic() at vpanic+0x2b8/frame 0xfffffe0053bf5890
panic() at panic+0xb5/frame 0xfffffe0053bf5960
kasan_report() at kasan_report+0xdc/frame 0xfffffe0053bf5a30
sctp_free_assoc() at sctp_free_assoc+0x727/frame 0xfffffe0053bf5b90
sctp_timeout_handler() at sctp_timeout_handler+0xda4/frame 0xfffffe0053bf5cd0
softclock_call_cc() at softclock_call_cc+0x3d7/frame 0xfffffe0053bf5e80
softclock_thread() at softclock_thread+0x1ff/frame 0xfffffe0053bf5ef0
fork_exit() at fork_exit+0xd0/frame 0xfffffe0053bf5f30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0053bf5f30
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 2 tid 100030 ]
Stopped at      kdb_enter+0x6b: movq    $0,0x270a03a(%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          0x53d1ea9c2e1ee97
rdx                        0x1
rbx                          0
rsp         0xfffffe0053bf5790
rbp         0xfffffe0053bf57b0
rsi                          0
rdi         0xffffffff8177ac4a  vprintf+0x35a
r8                           0
r9                  0xffffffff
r10                          0
r11         0xfffffe0092ddd8b0
r12         0xfffffe0053ec43a0
r13         0xfffffe0053bf5801
r14         0xffffffff82bbace0  .str.26
r15         0xffffffff82bbace0  .str.26
rip         0xffffffff8176e1db  kdb_enter+0x6b
rflags                    0x46
kdb_enter+0x6b: movq    $0,0x270a03a(%rip)
db> show proc
Process 2 (clock) at 0xfffffe0053ee9000:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff83e1b8c0
 ABI: null
 flag: 0x10000284  flag2: 0
 reaper: 0xffffffff83e1b8c0 reapsubtree: 2
 sigparent: 20
 vmspace: 0xffffffff83e1c860
   (map 0xffffffff83e1c860)
   (map.pmap 0xffffffff83e1c920)
   (pmap 0xffffffff83e1c988)
 threads: 2
100030                   Run     CPU 1                       [clock (0)]
100031                   I                                   [clock (1)]
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 8036   777   777     0  S       (threaded)                  syz-executor.0
109389                   S       nanslp  0xffffffff83e458c1  syz-executor.0
109395                   S       sbwait  0xfffffe0058d9b204  syz-executor.0
109399                   S       uwait   0xfffffe009aa3e200  syz-executor.0
 6349     1   777     0  S       uwait   0xfffffe0058c5cb80  syz-executor.0
 6343     1   777     0  S       uwait   0xfffffe0057a74e00  syz-executor.0
 6337     1   777     0  S       uwait   0xfffffe0057a72e80  syz-executor.0
 6332     1   777     0  S       umtxn   0xfffffe009aa3e500  syz-executor.0
 5270     1   780     0  S       uwait   0xfffffe0057a72d80  syz-executor.2
 5266     1   780     0  S       uwait   0xfffffe0057a72b80  syz-executor.2
 5261     1   780     0  S       umtxn   0xfffffe0058c5b700  syz-executor.2
 5254     1   780     0  S       umtxn   0xfffffe0057a75900  syz-executor.2
 5221     1  5221    65  Ss      select  0xfffffe0053dd08c0  dhclient
 4773     1   780     0  SV      uwait   0xfffffe0058c5c180  syz-executor.2
 4761     1   780     0  SV      uwait   0xfffffe009aa3e100  syz-executor.2
 4752     1   780     0  SV      uwait   0xfffffe0058c5bc00  syz-executor.2
 4743     1   780     0  SV      uwait   0xfffffe0057a73000  syz-executor.2
 4346     1  4346     0  Ss      select  0xfffffe0053dd2740  dhclient
 4343     1  4343     0  Ss      select  0xfffffe0007852dc0  dhclient
 4324     1  4324    65  Ss      select  0xfffffe0053dd06c0  dhclient
 3809     0     0     0  DL      -       0xffffffff83f655c0  [soaiod4]
 3808     0     0     0  DL      -       0xffffffff83f655c0  [soaiod3]
 3807     0     0     0  DL      -       0xffffffff83f655c0  [soaiod2]
 3806     0     0     0  DL      -       0xffffffff83f655c0  [soaiod1]
 3542     1   780     0  S       uwait   0xfffffe0058c5be00  syz-executor.2
 3532     1   780     0  S       uwait   0xfffffe0058c5d200  syz-executor.2
 3525     1   780     0  S       umtxn   0xfffffe0057a75e00  syz-executor.2
 3516     1   780     0  S       umtxn   0xfffffe0058c5b400  syz-executor.2
 3331     1   780     0  S       uwait   0xfffffe0058c5b280  syz-executor.2
 3254     1  3254     0  Ss      select  0xfffffe0053dd0840  dhclient
 3251     1  3251     0  Ss      select  0xfffffe0053dd01c0  dhclient
 3232     1  3232    65  Ss      select  0xfffffe0053dd0ac0  dhclient
 2409     1  2409     0  Ss      select  0xfffffe0053dd0cc0  dhclient
 2401     1  2401     0  Ss      select  0xfffffe0053dd0640  dhclient
 2382     1  2382    65  Ss      select  0xfffffe0053dd03c0  dhclient
 1911     0     0     0  DL      aiordy  0xfffffe009983aa90  [aiod4]
 1909     0     0     0  DL      aiordy  0xfffffe009a940a90  [aiod3]
 1908     0     0     0  DL      aiordy  0xfffffe009a408a90  [aiod2]
 1907     0     0     0  DL      aiordy  0xfffffe009a407000  [aiod1]
 1290     1  1290     0  Ss      select  0xfffffe0053dd2a40  dhclient
 1286     1  1286     0  Ss      select  0xfffffe0057036840  dhclient
 1135     1   778     0  S       uwait   0xfffffe0057a73100  syz-executor.1
 1127     1   788     0  S       uwait   0xfffffe0057a74400  syz-executor.3
 1124     1   780     0  S       uwait   0xfffffe0057a74200  syz-executor.2
 1119     1   778     0  S       uwait   0xfffffe0007975100  syz-executor.1
 1114     1   777     0  S       uwait   0xfffffe0058c5d800  syz-executor.0
 1111     1   780     0  S       uwait   0xfffffe0058c5da00  syz-executor.2
 1110     1   778     0  S       uwait   0xfffffe0058c5ce80  syz-executor.1
 1104     1   780     0  S       uwait   0xfffffe0058c5c680  syz-executor.2
 1103     1   777     0  S       uwait   0xfffffe0058c5c780  syz-executor.0
 1102     1   788     0  S       uwait   0xfffffe0057a73300  syz-executor.3
 1097     1   780     0  S       uwait   0xfffffe0058c5c880  syz-executor.2
 1096     1   778     0  S       uwait   0xfffffe0058c5d300  syz-executor.1
 1092     1   777     0  S       uwait   0xfffffe0058c5c980  syz-executor.0
 1090     1   780     0  S       uwait   0xfffffe0057a73900  syz-executor.2
 1086     1   788     0  S       uwait   0xfffffe0057a73b80  syz-executor.3
 1082     1   788     0  S       uwait   0xfffffe0058c5cc80  syz-executor.3
 1078     1   780     0  S       uwait   0xfffffe0057a73800  syz-executor.2
 1076     1   778     0  S       uwait   0xfffffe0058c5de00  syz-executor.1
 1074     1   777     0  S       uwait   0xfffffe0058c5d100  syz-executor.0
 1070     1   780     0  S       uwait   0xfffffe0058c5d700  syz-executor.2
 1066     1   788     0  S       uwait   0xfffffe0058c5d600  syz-executor.3
 1063     1   778     0  S       uwait   0xfffffe0007976080  syz-executor.1
 1062     1   780     0  S       uwait   0xfffffe0058c5df00  syz-executor.2
 1057     1   788     0  S       uwait   0xfffffe0058c5dd00  syz-executor.3
 1056     1   777     0  S       uwait   0xfffffe0057a73400  syz-executor.0
 1053     1   780     0  S       uwait   0xfffffe0057a73200  syz-executor.2
 1051     1   777     0  S       uwait   0xfffffe0058c5e100  syz-executor.0
 1040     1   788     0  S       uwait   0xfffffe0058c5ca80  syz-executor.3
  788   774   788     0  Ss      piperd  0xfffffe0058b975d0  syz-executor.3
  780   774   780     0  Ss      piperd  0xfffffe0058b992e8  syz-executor.2
  778   774   778     0  Ss      piperd  0xfffffe0058b878b8  syz-executor.1
  777   774   777     0  Ss      nanslp  0xffffffff83e458c0  syz-executor.0
  774   772   772     0  S       (threaded)                  syz-fuzzer
100106                   S       uwait   0xfffffe0058c5e400  syz-fuzzer
100114                   S       uwait   0xfffffe0007975300  syz-fuzzer
100115                   S       uwait   0xfffffe0057a73500  syz-fuzzer
100116                   S       uwait   0xfffffe0057a73600  syz-fuzzer
100117                   S       uwait   0xfffffe0057a73e80  syz-fuzzer
100118                   S       uwait   0xfffffe0057a74000  syz-fuzzer
100119                   S       uwait   0xfffffe0057a73700  syz-fuzzer
100120                   S       uwait   0xfffffe0057a74100  syz-fuzzer
105252                   S       kqread  0xfffffe0007970500  syz-fuzzer
  772   770   772     0  Ss      pause   0xfffffe00926990b0  csh
  770   688   770     0  Ss      select  0xfffffe0053dd2040  sshd
  754     1   754     0  Ss+     ttyin   0xfffffe0056fe74b0  getty
  753     1   753     0  Ss+     ttyin   0xfffffe0056fe48b0  getty
  752     1   752     0  Ss+     ttyin   0xfffffe0056fe4cb0  getty
  751     1   751     0  Ss+     ttyin   0xfffffe0056fe50b0  getty
  750     1   750     0  Ss+     ttyin   0xfffffe0056fe54b0  getty
  749     1   749     0  Ss+     ttyin   0xfffffe0056fe58b0  getty
  748     1   748     0  Ss+     ttyin   0xfffffe0056fe5cb0  getty
  747     1   747     0  Ss+     ttyin   0xfffffe0056fe60b0  getty
  746     1   746     0  Ss+     ttyin   0xfffffe0056fe64b0  getty
  692     1   692     0  Ss      nanslp  0xffffffff83e458c1  cron
  688     1   688     0  Ss      select  0xfffffe0053dd2440  sshd
  501     1   501     0  Ss      select  0xfffffe0053dd2940  syslogd
  430     1   430     0  Ss      select  0xfffffe0057036f40  devd
  429     1   429    65  Ss      select  0xfffffe0057036dc0  dhclient
  344     1   344     0  Ss      select  0xfffffe005700e3c0  dhclient
  341     1   341     0  Ss      select  0xfffffe0057036ec0  dhclient
   17     0     0     0  DL      syncer  0xffffffff83f6b0e0  [syncer]
   16     0     0     0  DL      vlruwt  0xfffffe0053ddb000  [vnlru]
   15     0     0     0  DL      (threaded)                  [bufdaemon]
100080                   D       psleep  0xffffffff83f696e0  [bufdaemon]
100083                   D       -       0xffffffff83211f80  [bufspacedaemon-0]
100095                   D       sdflush 0xfffffe0053f6a4e8  [/ worker]
    9     0     0     0  DL      psleep  0xffffffff83f9d180  [vmdaemon]
    8     0     0     0  DL      (threaded)                  [pagedaemon]
100078                   D       psleep  0xffffffff83f91038  [dom0]
100081                   D       launds  0xffffffff83f91044  [laundry: dom0]
100082                   D       umarcl  0xffffffff81ea5030  [uma]
    7     0     0     0  DL      -       0xffffffff83c01688  [rand_harvestq]
    6     0     0     0  DL      pftm    0xffffffff846fc530  [pf purge]
    5     0     0     0  DL      waiting 0xffffffff84a424e0  [sctp_iterator]
    4     0     0     0  DL      (threaded)                  [cam]
100045                   D       -       0xffffffff83aa35c0  [doneq0]
100046                   D       -       0xffffffff83aa3540  [async]
100077                   D       -       0xffffffff83aa33c0  [scanner]
   14     0     0     0  DL      seqstat 0xfffffe0056f1ac88  [sequencer 00]
    3     0     0     0  DL      (threaded)                  [crypto]
100041                   D       crypto_ 0xffffffff83f8c840  [crypto]
100042                   D       crypto_ 0xfffffe0053effd30  [crypto returns 0]
100043                   D       crypto_ 0xfffffe0053effd80  [crypto returns 1]
   13     0     0     0  DL      (threaded)                  [geom]
100036                   D       -       0xffffffff83e1ae80  [g_event]
100037                   D       -       0xffffffff83e1aea0  [g_up]
100038                   D       -       0xffffffff83e1aec0  [g_down]
    2     0     0     0  RL      (threaded)                  [clock]
100030                   Run     CPU 1                       [clock (0)]
100031                   I                                   [clock (1)]
   12     0     0     0  WL      (threaded)                  [intr]
100010                   I                                   [swi6: Giant taskq]
100017                   I                                   [swi5: fast taskq]
100020                   I                                   [swi6: task queue]
100029                   I                                   [swi1: netisr 0]
100032                   I                                   [swi3: busdma]
100033                   I                                   [swi1: hpts]
100034                   I                                   [swi1: hpts]
100047                   I                                   [irq24: virtio_pci0]
100048                   I                                   [irq25: virtio_pci0]
100049                   I                                   [irq26: virtio_pci0]
100050                   I                                   [irq27: virtio_pci0]
100051                   I                                   [irq28: virtio_pci1]
100052                   I                                   [irq29: virtio_pci1]
100053                   I                                   [irq30: virtio_pci1]
100054                   I                                   [irq31: virtio_pci1]
100055                   I                                   [irq32: virtio_pci1]
100060                   I                                   [irq33: virtio_pci2]
100061                   I                                   [irq34: virtio_pci2]
100062                   I                                   [irq35: virtio_pci2]
100064                   I                                   [irq1: atkbd0]
100065                   I                                   [irq12: psm0]
100066                   I                                   [swi0: uart uart++]
100070                   I                                   [swi1: pf send]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   Run     CPU 0                       [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffffe0053ddc000  [init]
   10     0     0     0  DL      audit_w 0xffffffff83f8d340  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff83e1b8c0  [swapper]
100005                   D       -       0xfffffe0007973100  [softirq_0]
100006                   D       -       0xfffffe0007973000  [softirq_1]
100007                   D       -       0xfffffe0007972e00  [if_io_tqg_0]
100008                   D       -       0xfffffe0007972d00  [if_io_tqg_1]
100009                   D       -       0xfffffe0007972c00  [if_config_tqg_0]
100011                   D       -       0xfffffe0007972a00  [aiod_kick taskq]
100012                   D       -       0xfffffe0007972900  [inm_free taskq]
100013                   D       -       0xfffffe0007972800  [linuxkpi_irq_wq]
100014                   D       -       0xfffffe0007972700  [in6m_free taskq]
100015                   D       -       0xfffffe0007972600  [deferred_unmount ta]
100016                   D       -       0xfffffe0007972500  [thread taskq]
100018                   D       -       0xfffffe0007972300  [kqueue_ctx taskq]
100019                   D       -       0xfffffe0007972200  [pci_hp taskq]
100021                   D       -       0xfffffe0007972000  [linuxkpi_short_wq_0]
100022                   D       -       0xfffffe0007972000  [linuxkpi_short_wq_1]
100023                   D       -       0xfffffe0007972000  [linuxkpi_short_wq_2]
100024                   D       -       0xfffffe0007972000  [linuxkpi_short_wq_3]
100025                   D       -       0xfffffe0007971e00  [linuxkpi_long_wq_0]
100026                   D       -       0xfffffe0007971e00  [linuxkpi_long_wq_1]
100027                   D       -       0xfffffe0007971e00  [linuxkpi_long_wq_2]
100028                   D       -       0xfffffe0007971e00  [linuxkpi_long_wq_3]
100035                   D       -       0xfffffe0053f21300  [firmware taskq]
100039                   D       -       0xfffffe0053f21100  [crypto_0]
100040                   D       -       0xfffffe0053f21100  [crypto_1]
100056                   D       -       0xfffffe0053f1e000  [vtnet0 rxq 0]
100057                   D       -       0xfffffe0007974e00  [vtnet0 txq 0]
100058                   D       -       0xfffffe0007974d00  [vtnet0 rxq 1]
100059                   D       -       0xfffffe0007974c00  [vtnet0 txq 1]
100063                   D       vtbslp  0xfffffe005700e800  [virtio_balloon]
100067                   D       -       0xffffffff82bc0b60  [deadlkres]
100071                   D       -       0xfffffe0007973200  [mca taskq]
100073                   D       -       0xfffffe00574c1200  [acpi_task_0]
100074                   D       -       0xfffffe00574c1200  [acpi_task_1]
100075                   D       -       0xfffffe00574c1200  [acpi_task_2]
100076                   D       -       0xfffffe0053f20e00  [CAM taskq]
db> show all locks
Process 8036 (syz-executor.0) thread 0xfffffe009a63e740 (109395)
exclusive sx so_rcv_sx (so_rcv_sx) r = 0 (0xfffffe0058d9b180) locked @ /syzkaller/managers/i386/kernel/sys/kern/uipc_socket.c:4193
Process 2 (clock) thread 0xfffffe0053ec43a0 (100030)
exclusive sleep mutex sctp-tcb (tcb) r = 0 (0xfffffe00996c51a0) locked @ /syzkaller/managers/i386/kernel/sys/netinet/sctputil.c:1777
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
         sctp_stro          595         5551K         3722
          tcp_hpts            6         4801K            6
            devbuf         4217         4323K         4245
         sysctloid        35306         2080K        35377
             vtbuf           24         1968K           46
               pcb         1239         1905K        19257
              kobj          327         1308K          488
            newblk           11         1027K        21234
          vfscache            3         1025K            3
          filedesc          102          810K        14073
          inodedep          653          757K         7891
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
           subproc          237          477K         8175
              intr            4          472K            4
         sctp_atcl         1206          453K        13646
              vmem            3          274K            6
            acpica         1674          184K        56014
         vnet_data            1          168K            1
            dirrem          642          161K         7544
           tidhash            3          141K            3
            linker          358          134K          386
           pagedep            9          130K         7069
        tfo_ccache            1          128K            1
            DEVFS1          109          109K          126
               sem            4          106K            4
               BPF           46           88K           54
               bus          991           81K         5140
          freefile          642           81K         7467
         sctp_atky         1807           76K        17931
          mtx_pool            2           72K            2
          syncache            1           68K            1
            module          512           64K          512
          acpitask            1           64K            1
       ddb_capture            1           64K            1
              umtx          484           61K          484
           kdtrace          315           59K        17447
           filemon            5           40K          219
              temp           35           35K         4512
            DEVFS3          128           32K          138
         hostcache            1           32K            1
               shm            1           32K            1
               msg            4           30K            4
        gtaskqueue           18           26K           18
            kbdmux            6           22K            6
            ifaddr           71           21K           73
        DEVFS_RULE           56           20K           56
         sctp_athm         1206           19K        13977
          sctp_map         1190           19K         7440
          routetbl          144           19K         1148
         ufs_mount            4           17K            5
              proc            3           17K            3
         sctp_timw           65           17K           65
               tty           16           16K           16
           ithread          100           16K          100
           lltable           47           15K          249
            bus-sc           34           15K         1651
              ksem           33           13K           73
            KTRACE          101           13K          131
       ether_multi          157           13K          187
             ifnet            7           13K            7
              kenv           95           12K           95
      eventhandler          134           12K          134
              rman           88           11K          429
              GEOM           61           11K          490
         CAM queue            5           11K         1528
         in6_multi           71            9K           71
            kqueue          109            9K         8059
         bmsafemap            2            9K         7914
              UART           12            9K           12
           devstat            4            9K            4
               rpc            2            8K            2
             shmfd            1            8K           18
       pfs_vncache            1            8K            1
         pfs_nodes           20            8K           20
     audit_evclass          237            8K          296
           pwddesc          107            7K         8129
         taskqueue           63            7K           63
              cred           26            7K          339
            sglist            5            7K            5
           CAM DEV            3            6K          510
            plimit           24            6K          440
       ufs_dirhash           24            5K           24
          pf_ifnet           12            5K          175
            DEVFSP           73            5K          774
               UMA          272            5K          272
           session           35            5K          166
                vt           11            5K           11
         proc-args          134            5K         9371
          pf_table            2            4K          180
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
           acpisem           28            4K           28
             selfd           55            4K       113775
             lockf           32            4K           71
             hhook           15            4K           17
          kcovinfo           52            4K           52
          terminal           11            3K           11
            select           19            3K          109
           uidinfo            3            3K           52
        local_apic            1            2K            1
           io_apic            1            2K            1
       fpukern_ctx            2            2K            2
         ipsec-saq            2            2K            2
           pf_osfp           17            2K           17
            ip6ndp           12            2K           15
          sctp_ifa           14            2K           15
filedesc_to_leader           28            2K           56
            Unitno           30            2K          151
           CAM XPT           22            2K          543
         sctp_stri            3            2K          710
               msi           12            2K           12
          in_multi            6            2K           12
         sctp_aadr           21            2K           72
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8358    1040     1192641       0     254   38494208        0
           tcp_log    416       0   15246      456880       0     254    6342336        0
              mbuf    256    9757    7782     3243549       0     254    4489984        0
         sctp_asoc   2288     595     425        3666       0     254    2333760        0
      mbuf_cluster   2048    1016       0        1016       0     254    2080768        0
        RADIX NODE    144   13663     248      216678       0      62    2003184        0
              pbuf   2624       0     762           0       0       2    1999488        0
       malloc-4096   4096     435       7        8615       0       2    1810432        0
          BUF TRIE    144     204   11584       13180       0      62    1697472        0
        malloc-384    384    4165       5        4165       0      30    1601280        0
        malloc-128    128   11634     239       11640       0     126    1519744        0
       malloc-2048   2048     617      63       10849       0       8    1392640        0
       UMA Slabs 0    112   11718      12       11718       0     126    1313760        0
           sctp_ep   1208     608     412        9567       0     254    1232160        0
         vmem btag     56   21928      71       21928       0     254    1231944        0
       tcp_bbr_map    128       0    8835      280587       0     127    1130880        0
      malloc-16384  16384      51       7        7035       0       1     950272        0
    ertt_txseginfo     40       0   21109      816173       0     254     844360        0
        256 Bucket   2048     378      18        9901       0       8     811008        0
        sctp_raddr    736     610     413        3930       0     254     752928        0
         VM OBJECT    264    2632     128      132570       0      30     728640        0
         FFS inode   1160     566      36        8036       0       8     698320        0
       malloc-1024   1024     593      31        3621       0      16     638976        0
       malloc-8192   8192       7      68         222       0       1     614400        0
             tcpcb   1104      14     497        2171       0     254     564144        0
        malloc-384    384    1338      72       14118       0      30     541440        0
            socket    960      64     444       14089       0     254     487680        0
      malloc-65536  65536       0       7         176       0       1     458752        0
            THREAD   1808     207      35        9403       0       8     437536        0
        malloc-256    256     989     631       26489       0      62     414720        0
         MAP ENTRY     96    3788     370      343290       0     126     399168        0
          lkpicurr    168       2    2350           2       0      62     395136        0
            lkpimm    168       1    2327           1       0      62     391104        0
        sctp_chunk    152     357    1931       38435       0     254     347776        0
      malloc-65536  65536       5       0           5       0       1     327680        0
             VNODE    448     606     114        8078       0      30     322560        0
        malloc-384    384     652      68        7931       0      30     276480        0
         malloc-64     64    3865     230        3881       0     254     262080        0
       mbuf_packet    256     263     753       29599       0     254     260096        0
           VMSPACE   2552      82      14        8019       0       4     244992        0
         malloc-16     16   14605     145       14699       0     254     236000        0
      malloc-32768  32768       0       7        6332       0       1     229376        0
            DEVCTL   1024       0     220         155       0       0     225280        0
        malloc-256    256     816      54        9000       0      62     222720        0
     FPU_save_area    832     209      52       21939       0      16     217152        0
        malloc-128    128    1398     245       41053       0     126     210304        0
        malloc-256    256     100     710       21638       0      62     207360        0
      malloc-65536  65536       3       0           3       0       1     196608        0
         UMA Zones    768     244       0         244       0      16     187392        0
         malloc-32     32    5317     353        5340       0     254     181440        0
       FFS2 dinode    256     566     124        8036       0      62     176640        0
              PROC   1352     106      23        8042       0       8     174408        0
        128 Bucket   1024      91      56        2249       0      16     150528        0
       S VFS Cache    104    1021     383        8723       0     126     146016        0
         filedesc0   1072     107      26        8129       0       8     142576        0
      malloc-65536  65536       0       2          65       0       1     131072        0
      malloc-65536  65536       0       2         234       0       1     131072        0
       malloc-1024   1024     121       7         331       0      16     131072        0
        malloc-128    128     805     218        4327       0     126     130944        0
             unpcb    256      20     490        1357       0     254     130560        0
            clpbuf   2624       0      48         243       0      16     125952        0
sctp_stream_msg_out    112     636     408        1645       0     254     116928        0
          ksiginfo    112     119     925       12880       0     126     116928        0
        malloc-128    128     643     256        7534       0     126     115072        0
         malloc-64     64     904     671      126056       0     254     100800        0
         malloc-64     64    1354     221       14983       0     254     100800        0
        malloc-128    128     659     116       16667       0     126      99200        0
      malloc-32768  32768       1       2          15       0       1      98304        0
       malloc-8192   8192       9       2          15       0       1      90112        0
       malloc-4096   4096      22       0          22       0       2      90112        0
          UMA Kegs    384     230       3         230       0      30      89472        0
          syncache    168       0     528           9       0     254      88704        0
         64 Bucket    512      99      69       10161       0      30      86016        0
              pipe    744      23      92         611       0      16      85560        0
        sctp_readq    152       0     520         453       0     254      79040        0
       malloc-4096   4096      15       3          30       0       2      73728        0
             g_bio    408       0     180      102360       0      30      73440        0
         malloc-32     32    1602     540       20923       0     254      68544        0
      malloc-65536  65536       1       0           1       0       1      65536        0
      malloc-32768  32768       2       0           2       0       1      65536        0
      malloc-16384  16384       4       0           4       0       1      65536        0
       malloc-8192   8192       7       1         110       0       1      65536        0
       malloc-1024   1024      21      43         547       0      16      65536        0
        malloc-256    256      76     179        9081       0      62      65280        0
         32 Bucket    256      96     159       14258       0      62      65280        0
         tcp_inpcb    424      14     139        2171       0      30      64872        0
       malloc-4096   4096      10       4         555       0       2      57344        0
         malloc-64     64     119     700        8143       0     254      52416        0
             Files     80     285     365       31102       0     126      52000        0
        malloc-256    256      10     185       20145       0      62      49920        0
           DIRHASH   1024      34      14          34       0      16      49152        0
             NAMEI   1024       0      48       47436       0      16      49152        0
       malloc-2048   2048      12      12          15       0       8      49152        0
       malloc-2048   2048       5      19         203       0       8      49152        0
       malloc-1024   1024      19      29        1332       0      16      49152        0
            pcpu-8      8    4749    1395        9041       0     254      49152        0
      tcp_rack_pcb    896       5      49         344       0      16      48384        0
       tcp_bbr_pcb    832       0      54        1042       0      16      44928        0
         TURNSTILE    136     243      72         243       0      62      42840        0
       Mountpoints   2752       2      12           3       0       4      38528        0
             ripcb    424       5      85         199       0      30      38160        0
     udplite_inpcb    424       0      90         131       0      30      38160        0
         udp_inpcb    424       6      84         612       0      30      38160        0
            da_ccb    544       0      70       25838       0      16      38080        0
         hostcache     64       3     564           3       0     254      36288        0
         malloc-64     64      45     522       17064       0     254      36288        0
         malloc-64     64      26     541          75       0     254      36288        0
         malloc-64     64     196     371        1279       0     254      36288        0
         malloc-64     64      11     556          74       0     254      36288        0
         16 Bucket    144      93     159        1528       0      62      36288        0
        malloc-128    128      42     237         851       0     126      35712        0
        malloc-128    128      98     181         665       0     126      35712        0
        malloc-128    128      45     234         212       0     126      35712        0
     routing nhops    256      27     108          35       0      62      34560        0
           ttyoutq    256      72      63         160       0      62      34560        0
        malloc-384    384      47      43         405       0      30      34560        0
        malloc-384    384      59      31         437       0      30      34560        0
        malloc-256    256      25     110        1693       0      62      34560        0
        malloc-256    256      11     124         679       0      62      34560        0
        malloc-256    256      42      93        7253       0      62      34560        0
        SLEEPQUEUE     88     243     141         243       0     126      33792        0
      malloc-32768  32768       0       1         120       0       1      32768        0
      malloc-16384  16384       0       2           3       0       1      32768        0
      malloc-16384  16384       2       0          17       0       1      32768        0
      malloc-16384  16384       1       1         161       0       1      32768        0
       malloc-8192   8192       4       0           4       0       1      32768        0
       malloc-4096   4096       2       6        7212       0       2      32768        0
       malloc-2048   2048       0      16          18       0       8      32768        0
       malloc-2048   2048       7       9           7       0       8      32768        0
       malloc-2048   2048       2      14         267       0       8      32768        0
       malloc-2048   2048       1      15          25       0       8      32768        0
       malloc-2048   2048       2      14         347       0       8      32768        0
       malloc-1024   1024       2      30         144       0      16      32768        0
       malloc-1024   1024       3      29          12       0      16      32768        0
       malloc-1024   1024       1      31          18       0      16      32768        0
        malloc-512    512       0      64         119       0      30      32768        0
        malloc-512    512       2      62           2       0      30      32768        0
        malloc-512    512       3      61         206       0      30      32768        0
        malloc-512    512       0      64          58       0      30      32768        0
        malloc-512    512      10      54          68       0      30      32768        0
        malloc-512    512       3      61         711       0      30      32768        0
        malloc-512    512       0      64          46       0      30      32768        0
        malloc-512    512      11      53          15       0      30      32768        0
           pcpu-64     64     492      20         492       0     254      32768        0
             KNOTE    160      28     172       93769       0      62      32000        0
            ttyinq    160     135      65         300       0      62      32000        0
          8 Bucket     80      56     344        2477       0     126      32000        0
      tcp_rack_map    120      19     245        1203       0     126      31680        0
            cpuset    104       7     272         214       0     126      29016        0
        sctp_laddr     48      60     528        3022       0     254      28224        0
   tcp_inpcb ports     32       3     879        1261       0     254      28224        0
              ertt     72      14     378        2171       0     126      28224        0
               PWD     32      64     818        7063       0     254      28224        0
          4 Bucket     48       7     581         224       0     254      28224        0
          2 Bucket     32     105     777        2305       0     254      28224        0
         malloc-16     16    1250     500       35267       0     254      28000        0
         malloc-16     16    1212     538       13985       0     254      28000        0
               AIO    208       0     133          44       0      62      27664        0
       malloc-4096   4096       1       5          11       0       2      24576        0
           rtentry    176      31     107          35       0      62      24288        0
              PGRP     88      35     241         166       0     126      24288        0
          rl_entry     40     120     486         121       0     254      24240        0
            itimer    352       0      66           2       0      30      23232        0
        malloc-384    384       0      60           4       0      30      23040        0
        malloc-384    384      11      49          11       0      30      23040        0
         domainset     40       0     567         157       0     254      22680        0
             udpcb     32       6     624         743       0     254      20160        0
udplite_inpcb ports     32       0     630          15       0     254      20160        0
   udp_inpcb ports     32       3     627          47       0     254      20160        0
         malloc-32     32      35     595         795       0     254      20160        0
         malloc-32     32      57     573        7215       0     254      20160        0
         malloc-32     32     132     498        7697       0     254      20160        0
         malloc-32     32      81     549         258       0     254      20160        0
         malloc-32     32     109     521         111       0     254      20160        0
         malloc-32     32       7     623          19       0     254      20160        0
           cryptop    280       0      70          51       0      30      19600        0
             AIOCB    552       0      35         124       0      16      19320        0
            AIOLIO    272       0      70          22       0      30      19040        0
 epoch_record pcpu    256       4      60           4       0      62      16384        0
       malloc-8192   8192       0       2          28       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-4096   4096       0       4          11       0       2      16384        0
       malloc-4096   4096       0       4          41       0       2      16384        0
       malloc-1024   1024       4      12           5       0      16      16384        0
           SMR CPU     32       7     504           7       0     254      16352        0
      vtnet_tx_hdr     24       0     668      845519       0     254      16032        0
         malloc-16     16     510     490        9143       0     254      16000        0
              kenv    258      15      45        1039       0      30      15480        0
            mqnode    416       3      33           3       0      30      14976        0
              vmem   1856       1       7           1       0       8      14848        0
        SMR SHARED     24       7     504           7       0     254      12264        0
              AIOP     32       4     374           4       0     254      12096        0
         malloc-16     16     106     644       17839       0     254      12000        0
         malloc-16     16      13     737          27       0     254      12000        0
         malloc-16     16      39     711         181       0     254      12000        0
       malloc-8192   8192       0       1           1       0       1       8192        0
       malloc-8192   8192       1       0           1       0       1       8192        0
           pcpu-16     16      14     498          14       0     254       8192        0
         malloc-16     16       0     500           2       0     254       8000        0
       UMA Slabs 1    176      11      11          11       0      62       3872        0
        KMAP ENTRY     96      12      27          14       0       0       3744        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
   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     254          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       0          0        0
           pf tags    104       0       0           0       0     126          0        0
          pf mtags     56       0       0           0       0     254          0        0
tfo_ccache_entries     80       0       0           0       0     126          0        0
               tfo      4       0       0           0       0     254          0        0
          sackhole     32       0       0           0       0     254          0        0
             tcptw     72       0       0           0       0     254          0        0
               ipq     56       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
      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
       ripcb ports     32       0       0           0       0     254          0        0
    IPsec SA lft_c     16       0       0           0       0     254          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
           NCLNODE    608       0       0           0       0      16          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
  linux_dma_object     32       0       0           0       0     254          0        0
  linux_dma_pctrie    144       0       0           0       0      62          0        0
   IOMMU_MAP_ENTRY    120       0       0           0       0     126          0        0
    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
        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-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-384    384       0       0           0       0      30          0        0
           pcpu-32     32       0       0           0       0     254          0        0
            pcpu-4      4       0       0           0       0     254          0        0
            fakepg    104       0       0           0       0     126          0        0
          UMA Hash    256       0       0           0       0      62          0        0

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-freebsd-i386 2022/03/31 18:13 freebsd-src ab8ac4c28574 7c337266 console log report panic: ASan: Invalid access, NUM-byte write at ADDR, StackMiddle(f2)
* Struck through repros no longer work on HEAD.