syzbot


panic: ASan: Invalid access, 4-byte read in sctp_connectx_helper_find

Status: closed as invalid on 2021/09/17 21:46
Reported-by: syzbot+0e78c8825a5eccb99254@syzkaller.appspotmail.com
Fix commit: sctp: improve input validation of mapped addresses in send()
First crash: 1014d, last: 1014d

Sample crash report:
panic: ASan: Invalid access, 4-byte read at 0xfffffe009e2b6ab4, RedZonePartial(4)
cpuid = 1
time = 1625906559
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe00a3c91dd0
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe00a3c91f30
vpanic() at vpanic+0x2c5/frame 0xfffffe00a3c92010
panic() at panic+0xb5/frame 0xfffffe00a3c920d0
__asan_load4_noabort() at __asan_load4_noabort+0x20f/frame 0xfffffe00a3c92190
sctp_connectx_helper_find() at sctp_connectx_helper_find+0x1d4/frame 0xfffffe00a3c92270
sctp_do_connect_x() at sctp_do_connect_x+0x2e7/frame 0xfffffe00a3c92370
sctp_setopt() at sctp_setopt+0xe5c/frame 0xfffffe00a3c925d0
sctp_ctloutput() at sctp_ctloutput+0x3df/frame 0xfffffe00a3c926d0
sosetopt() at sosetopt+0x234/frame 0xfffffe00a3c92870
kern_setsockopt() at kern_setsockopt+0x23c/frame 0xfffffe00a3c929a0
sys_setsockopt() at sys_setsockopt+0x76/frame 0xfffffe00a3c929f0
amd64_syscall() at amd64_syscall+0x425/frame 0xfffffe00a3c92bf0
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00a3c92bf0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x287eda, rsp = 0x7fffdfffdf08, rbp = 0x7fffdfffdf70 ---
KDB: enter: panic
[ thread pid 4673 tid 106009 ]
Stopped at      kdb_enter+0x6b: movq    $0,0x28f9c5a(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b
es                        0x3b
fs                        0x13
gs                        0x1b
ss                        0x28
rax                       0x12
rcx         0xabf59168b92a7e78
rdx                    0x40001
rbx                          0
rsp         0xfffffe00a3c91f10
rbp         0xfffffe00a3c91f30
rsi                          0
rdi         0xfffffe009e3d7b68
r8                         0x3
r9          0xfffffe00a3c91a68
r10                          0
r11         0xfffffe009e37c8b0
r12         0xfffffe009e37c3a0
r13         0xfffffe00a3c91f01
r14         0xffffffff82c42700  .str.18
r15         0xffffffff82c42700  .str.18
rip         0xffffffff8178eddb  kdb_enter+0x6b
rflags                    0x46
kdb_enter+0x6b: movq    $0,0x28f9c5a(%rip)
db> show proc
Process 4673 (syz-executor.1) at 0xfffffe00a79aea70:
 state: NORMAL
 uid: 0  gids: 0, 0, 5
 parent: pid 787 at 0xfffffe009786ea70
 ABI: FreeBSD ELF64
 flag: 0x10000080  flag2: 0
 arguments: /root/syz-executor.1
 reaper: 0xfffffe0053d51538 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffffe00a799e000
   (map 0xfffffe00a799e000)
   (map.pmap 0xfffffe00a799e0c0)
   (pmap 0xfffffe00a799e120)
 threads: 2
105376                   RunQ                                syz-executor.1
106009                   Run     CPU 1                       syz-executor.1
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 4673   787   787     0  R       (threaded)                  syz-executor.1
105376                   RunQ                                syz-executor.1
106009                   Run     CPU 1                       syz-executor.1
 4672   785   785     0  R       (threaded)                  syz-executor.0
105408                   RunQ                                syz-executor.0
106008                   S       uwait   0xfffffe009bf29480  syz-executor.0
 3905     1   786     0  S       uwait   0xfffffe009e995180  syz-executor.2
 3902     1   786     0  S       uwait   0xfffffe00a706f280  syz-executor.2
 2217     1  2217    65  Ss      select  0xfffffe00a73e6ac0  dhclient
 2094     1   787     0  S       uwait   0xfffffe009e2b0980  syz-executor.1
 2093     1   789     0  S       uwait   0xfffffe009e2b0100  syz-executor.3
 2091     1   787     0  S       uwait   0xfffffe00a703e600  syz-executor.1
 2088     1   789     0  S       uwait   0xfffffe00a703ea00  syz-executor.3
 2081     1   787     0  S       uwait   0xfffffe00a706fc80  syz-executor.1
 2078     1   785     0  S       uwait   0xfffffe009bf29380  syz-executor.0
 2076     1   785     0  S       uwait   0xfffffe0097904d00  syz-executor.0
 2074     1   785     0  S       uwait   0xfffffe009bf29280  syz-executor.0
 2073     1   786     0  S       uwait   0xfffffe005874ea00  syz-executor.2
 2068     1   787     0  S       uwait   0xfffffe009bf29800  syz-executor.1
 2066     1   786     0  S       uwait   0xfffffe00a706fa80  syz-executor.2
 2062     1   787     0  S       uwait   0xfffffe00a7016e80  syz-executor.1
 2061     1   786     0  S       uwait   0xfffffe00573d9280  syz-executor.2
 2059     1   787     0  S       uwait   0xfffffe009e9f9d80  syz-executor.1
 2051     1   787     0  S       uwait   0xfffffe00a703eb00  syz-executor.1
 2050     1   787     0  S       uwait   0xfffffe009e9f9280  syz-executor.1
 1894     1  1894     0  Ss      select  0xfffffe00a73e6a40  dhclient
 1890     1  1890     0  Ss      select  0xfffffe00a73e69c0  dhclient
 1871     1  1871    65  Ss      select  0xfffffe00a706f1c0  dhclient
 1736     1   789 60928  S       uwait   0xfffffe009e2b0200  syz-executor.3
 1735     1   789     0  S       uwait   0xfffffe00a703ef00  syz-executor.3
 1671     1  1671     0  Ss      select  0xfffffe00a70161c0  dhclient
 1665     1  1665     0  Ss      select  0xfffffe00a70160c0  dhclient
 1636     1  1636    65  Ss      select  0xfffffe009bf29740  dhclient
 1369     1  1369     0  Ss      select  0xfffffe009e995240  dhclient
 1366     1  1366     0  Ss      select  0xfffffe00a703e140  dhclient
 1347     1  1347    65  Ss      select  0xfffffe009e995940  dhclient
  986     0     0     0  DL      aiordy  0xfffffe009786e538  [aiod4]
  985     0     0     0  DL      aiordy  0xfffffe00979e0000  [aiod3]
  984     0     0     0  DL      aiordy  0xfffffe00a701b538  [aiod2]
  983     0     0     0  DL      aiordy  0xfffffe00a705b538  [aiod1]
  957     1   957     0  Ss      select  0xfffffe00a706ff40  dhclient
  954     1   954     0  Ss      select  0xfffffe00a706fec0  dhclient
  789   782   789     0  Rs                                  syz-executor.3
  787   782   787     0  Ss      nanslp  0xffffffff84055901  syz-executor.1
  786   782   786     0  Rs                                  syz-executor.2
  785   782   785     0  Rs                                  syz-executor.0
  782   780   780     0  R       (threaded)                  syz-fuzzer
100105                   S       uwait   0xfffffe0097904100  syz-fuzzer
100120                   RunQ                                syz-fuzzer
100121                   S       uwait   0xfffffe0097904000  syz-fuzzer
100122                   S       kqread  0xfffffe009e4c3800  syz-fuzzer
100123                   S       uwait   0xfffffe009e995e00  syz-fuzzer
100124                   S       uwait   0xfffffe009e995f00  syz-fuzzer
100125                   S       uwait   0xfffffe009bf29080  syz-fuzzer
100126                   RunQ                                syz-fuzzer
100127                   S       uwait   0xfffffe009e995b00  syz-fuzzer
  780   778   780     0  Ss      pause   0xfffffe009e4435e8  csh
  778   694   778     0  Ss      select  0xfffffe009e2b0cc0  sshd
  760     1   760     0  Ss+     ttyin   0xfffffe0056fe0cb0  getty
  759     1   759     0  Ss+     ttyin   0xfffffe00583ed0b0  getty
  758     1   758     0  Ss+     ttyin   0xfffffe00583ed4b0  getty
  757     1   757     0  Ss+     ttyin   0xfffffe00583ed8b0  getty
  756     1   756     0  Ss+     ttyin   0xfffffe00583edcb0  getty
  755     1   755     0  Ss+     ttyin   0xfffffe00583950b0  getty
  754     1   754     0  Ss+     ttyin   0xfffffe00583954b0  getty
  753     1   753     0  Ss+     ttyin   0xfffffe00583958b0  getty
  752     1   752     0  Ss+     ttyin   0xfffffe0058395cb0  getty
  698     1   698     0  Ss      nanslp  0xffffffff84055900  cron
  694     1   694     0  Ss      select  0xfffffe009bf29540  sshd
  507     1   507     0  Ss      select  0xfffffe009e2b0bc0  syslogd
  436     1   436     0  Ss      select  0xfffffe009bf29a40  devd
  435     1   435    65  Ss      select  0xfffffe009e2b0b40  dhclient
  350     1   350     0  Ss      select  0xfffffe009bf29940  dhclient
  347     1   347     0  Ss      select  0xfffffe009bf29c40  dhclient
   23     0     0     0  DL      syncer  0xffffffff8417ba40  [syncer]
   22     0     0     0  DL      vlruwt  0xfffffe0058747a70  [vnlru]
   21     0     0     0  DL      (threaded)                  [bufdaemon]
100083                   D       qsleep  0xffffffff84179940  [bufdaemon]
100086                   D       -       0xffffffff83411f80  [bufspacedaemon-0]
100097                   D       sdflush 0xfffffe0097923ce8  [/ worker]
   20     0     0     0  DL      psleep  0xffffffff841b1c80  [vmdaemon]
   19     0     0     0  DL      (threaded)                  [pagedaemon]
100081                   D       psleep  0xffffffff841a57b8  [dom0]
100087                   D       launds  0xffffffff841a57c4  [laundry: dom0]
100088                   D       umarcl  0xffffffff81e7e5e0  [uma]
   18     0     0     0  DL      -       0xffffffff83e0caa0  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff84c52460  [sctp_iterator]
   16     0     0     0  DL      pftm    0xffffffff84742d30  [pf purge]
   15     0     0     0  DL      -       0xffffffff84174dc0  [soaiod4]
    9     0     0     0  DL      -       0xffffffff84174dc0  [soaiod3]
    8     0     0     0  DL      -       0xffffffff84174dc0  [soaiod2]
    7     0     0     0  DL      -       0xffffffff84174dc0  [soaiod1]
    6     0     0     0  DL      (threaded)                  [cam]
100046                   D       -       0xffffffff83c92240  [doneq0]
100047                   D       -       0xffffffff83c921c0  [async]
100080                   D       -       0xffffffff83c92040  [scanner]
   14     0     0     0  DL      seqstat 0xfffffe0056aadc88  [sequencer 00]
    5     0     0     0  DL      crypto_ 0xfffffe00541abd80  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffffe00541abd30  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff8419f860  [crypto]
   13     0     0     0  DL      (threaded)                  [geom]
100037                   D       -       0xffffffff84028ec0  [g_event]
100038                   D       -       0xffffffff84028f00  [g_up]
100039                   D       -       0xffffffff84028f40  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100028                   D       -       0xfffffe0053e16e00  [thr_0]
100029                   D       -       0xfffffe0053e16e80  [thr_1]
   12     0     0     0  WL      (threaded)                  [intr]
100010                   I                                   [swi6: task queue]
100011                   I                                   [swi6: Giant taskq]
100014                   I                                   [swi5: fast taskq]
100030                   I                                   [swi1: netisr 0]
100031                   I                                   [swi3: vm]
100032                   I                                   [swi4: clock (0)]
100033                   I                                   [swi4: clock (1)]
100034                   I                                   [swi1: hpts]
100035                   I                                   [swi1: hpts]
100048                   I                                   [irq24: virtio_pci0]
100049                   I                                   [irq25: virtio_pci0]
100050                   I                                   [irq26: virtio_pci0]
100051                   I                                   [irq27: virtio_pci0]
100052                   I                                   [irq28: virtio_pci1]
100053                   I                                   [irq29: virtio_pci1]
100054                   I                                   [irq30: virtio_pci1]
100055                   I                                   [irq31: virtio_pci1]
100056                   I                                   [irq32: virtio_pci1]
100061                   I                                   [irq10: virtio_pci2]
100063                   I                                   [irq1: atkbd0]
100064                   I                                   [irq12: psm0]
100065                   I                                   [swi0: uart uart++]
100073                   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    0xfffffe0053d51538  [init]
   10     0     0     0  DL      audit_w 0xffffffff841a0800  [audit]
    0     0     0     0  RLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff84029dc0  [swapper]
100005                   D       -       0xfffffe0053c0d800  [softirq_0]
100006                   D       -       0xfffffe0053c0d600  [softirq_1]
100007                   D       -       0xfffffe0053c0d400  [if_io_tqg_0]
100008                   D       -       0xfffffe0053c0d200  [if_io_tqg_1]
100009                   D       -       0xfffffe0053c0d000  [if_config_tqg_0]
100012                   Run     CPU 0                       [thread taskq]
100013                   D       -       0xfffffe000791a400  [inm_free taskq]
100015                   D       -       0xfffffe000791a200  [kqueue_ctx taskq]
100016                   D       -       0xfffffe000791a100  [linuxkpi_irq_wq]
100017                   D       -       0xfffffe000791a000  [aiod_kick taskq]
100018                   D       -       0xfffffe0053df6e00  [in6m_free taskq]
100019                   D       -       0xfffffe0053df6d00  [pci_hp taskq]
100020                   D       -       0xfffffe0053df6c00  [linuxkpi_short_wq_0]
100021                   D       -       0xfffffe0053df6c00  [linuxkpi_short_wq_1]
100022                   D       -       0xfffffe0053df6c00  [linuxkpi_short_wq_2]
100023                   D       -       0xfffffe0053df6c00  [linuxkpi_short_wq_3]
100024                   D       -       0xfffffe0053df6b00  [linuxkpi_long_wq_0]
100025                   D       -       0xfffffe0053df6b00  [linuxkpi_long_wq_1]
100026                   D       -       0xfffffe0053df6b00  [linuxkpi_long_wq_2]
100027                   D       -       0xfffffe0053df6b00  [linuxkpi_long_wq_3]
100036                   D       -       0xfffffe0053df6a00  [firmware taskq]
100040                   D       -       0xfffffe0053df6900  [crypto_0]
100041                   D       -       0xfffffe0053df6900  [crypto_1]
100057                   D       -       0xfffffe0053df6700  [vtnet0 rxq 0]
100058                   D       -       0xfffffe0053df6600  [vtnet0 txq 0]
100059                   D       -       0xfffffe0053df6500  [vtnet0 rxq 1]
100060                   D       -       0xfffffe0053df6400  [vtnet0 txq 1]
100062                   D       vtbslp  0xfffffe0056fc0380  [virtio_balloon]
100066                   D       -       0xfffffe0053df6300  [mca taskq]
100071                   D       -       0xffffffff82c49681  [deadlkres]
100076                   D       -       0xfffffe0058394e00  [acpi_task_0]
100077                   D       -       0xfffffe0058394e00  [acpi_task_1]
100078                   D       -       0xfffffe0058394e00  [acpi_task_2]
100079                   D       -       0xfffffe0053df6800  [CAM taskq]
db> show all locks
Process 4673 (syz-executor.1) thread 0xfffffe009e37c3a0 (106009)
exclusive sleep mutex sctp-create (inp_create) r = 0 (0xfffffe00a74e1988) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_usrreq.c:1377
Process 0 (kernel) thread 0xfffffe0053df21e0 (100012)
exclusive sleep mutex kernel arena domain (kernel arena domain) r = 0 (0xfffff800064b9000) locked @ /syzkaller/managers/main/kernel/sys/kern/subr_vmem.c:789
exclusive sleep mutex vmem list lock (vmem list lock) r = 0 (0xffffffff83409bc0) locked @ /syzkaller/managers/main/kernel/sys/kern/subr_vmem.c:784
db> show malloc
              Type        InUse        MemUse     Requests
         sctp_stro           90        12390K         2201
           pf_hash            5        11524K            5
            devbuf         4216         4338K         4244
          tcp_hpts            6         3201K            6
         sysctloid        34320         2027K        34387
             vtbuf           24         1968K           46
              kobj          326         1304K          486
            newblk            9         1026K        10148
          vfscache            3         1025K            3
               pcb          280          821K        10808
          inodedep          154          570K         4030
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
          filedesc           52          409K         7313
           subproc          188          379K         4777
              vmem            3          274K            5
            acpica         1674          184K        54806
         vnet_data            1          168K            1
           tidhash            3          141K            3
            linker          357          140K          397
           pagedep            9          130K         3682
        tfo_ccache            1          128K            1
            DEVFS1          107          107K          124
               sem            4          106K            4
               BPF           46           88K           59
         sctp_atcl          222           84K         7545
               bus          986           80K         3469
          mtx_pool            2           72K            2
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          510           64K          510
              umtx          418           53K          418
           kdtrace          264           51K        10684
            dirrem          145           37K         3833
              temp           36           35K         2725
         hostcache            1           32K            1
               shm            1           32K           10
            DEVFS3          126           32K          136
               msg            4           30K            4
        gtaskqueue           18           26K           18
            kbdmux            6           22K            6
            ifaddr           71           21K           73
        DEVFS_RULE           56           20K           56
          routetbl          145           19K          522
          freefile          145           19K         3809
         ufs_mount            5           17K            6
              proc            3           17K            3
               tty           16           16K           16
           ithread           99           16K           99
            bus-sc           33           14K         1684
         sctp_atky          312           13K        10275
           lltable           42           13K          139
       ether_multi          157           13K          169
            KTRACE          100           13K          100
             ifnet            7           13K            7
              ksem           31           12K           57
              kenv           95           12K           95
      eventhandler          133           12K          133
         CAM queue            5           11K         1528
              rman           84           10K          425
              GEOM           60           10K          489
         in6_multi           71            9K           71
         sctp_timw           34            9K           34
         bmsafemap            2            9K         4018
              UART           12            9K           12
           devstat            4            9K            4
               rpc            2            8K            2
             shmfd            1            8K           40
       pfs_vncache            1            8K            1
            kqueue           87            8K         4703
         pfs_nodes           20            8K           20
     audit_evclass          236            8K          294
              cred           27            7K          299
         taskqueue           60            7K           60
            sglist            5            7K            5
            DEVFSP           96            6K          599
           CAM DEV            3            6K          510
            plimit           24            6K          500
           pwddesc           84            6K         4712
       ufs_dirhash           24            5K           24
          pf_ifnet           12            5K           39
               UMA          270            5K          270
           session           35            5K           59
           pf_rule            3            5K           47
                vt           11            5K           11
          pf_table            2            4K           21
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
          kcovinfo           64            4K           68
             lockf           33            4K          149
           acpisem           28            4K           28
         sctp_athm          222            4K         7806
             selfd           55            4K        79045
             hhook           15            4K           17
         sctp_stri            6            3K          516
       fpukern_ctx            3            3K            3
          sctp_map          180            3K         4400
         proc-args           52            3K          705
          terminal           11            3K           11
            select           19            3K          226
           uidinfo            4            3K           16
        local_apic            1            2K            1
           io_apic            1            2K            1
         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            9
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
               msi            9            2K            9
             xform           18            2K          849
             clone            9            2K            9
               tun            7            2K            7
          freework            5            2K         6016
           softdep            1            1K            1
             mkdir            8            1K         7286
          freeblks            4            1K         3927
            sahead            1            1K            1
          secasvar            1            1K            1
             nhops            6            1K            8
       vnodemarker            2            1K          192
filedesc_to_leader           16            1K           31
      NFSD session            1            1K            1
        CAM periph            4            1K          271
           pf_osfp            8            1K            8
          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          249
 encap_export_host           12            1K           12
          procdesc            5            1K           18
         newdirblk            4            1K         3643
            diradd            4            1K         3873
              pfil            4            1K            4
              cdev            2            1K            2
       inpcbpolicy           15            1K         2349
               osd            8            1K          983
    chacha20random            1            1K            1
        ip_msource            5            1K            5
      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
            feeder            7            1K            7
           tcpfunc            3            1K            3
        loginclass            3            1K            6
            prison            6            1K            6
       lkpikmalloc            5            1K            6
        aesni_data            2            1K            2
            apmdev            1            1K            1
          atkbddev            2            1K            2
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
          CAM path            4            1K         1034
          pmchooks            1            1K            1
             sigio            2            1K            3
          nexusdev            7            1K            7
            soname            4            1K         8464
          filecaps            5            1K          116
          sctp_vrf            1            1K            1
              vnet            1            1K            1
           entropy            2            1K           47
          acpiintr            1            1K            1
               pmc            1            1K            1
        sctp_socko            1            1K         3820
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          p1003.1b            1            1K            1
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            statfs            0            0K         3845
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ag_tgt_map_t malloc            0            0K            0
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lDevFlags * malloc            0            0K            0
tiDeviceHandle_t * malloc            0            0K            0
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ag_device_t malloc            0            0K            0
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8320    1820     1374396       0     254   41533440        0
           tcp_log    416       0   15048      160894       0     254    6259968        0
        RADIX NODE    144   15628    7747      204853       0      62    3366000        0
              mbuf    256    8882    4003     2637062       0     254    3298560        0
              pbuf   2624       0     957           0       0       2    2511168        0
          BUF TRIE    144     313   11447        7186       0      62    1693440        0
        malloc-384    384    4238      32        4335       0      30    1639680        0
        malloc-128    128   11348      29       11626       0     126    1456256        0
       malloc-4096   4096     327       3         556       0       2    1351680        0
       UMA Slabs 0    112   11589       0       11589       0     126    1297968        0
      mbuf_cluster   2048     630       2         630       0     254    1294336        0
         vmem btag     56   20006      57       20006       0     254    1123528        0
    ertt_txseginfo     40       0   17978      462030       0     254     719120        0
         FFS inode   1160     533      27        4342       0       8     649600        0
        256 Bucket   2048     279      15       19143       0       8     602112        0
       tcp_bbr_map    128       0    4278      190900       0     126     547584        0
      malloc-16384  16384      26       6        3657       0       1     524288        0
         sctp_asoc   2288      90     115        2200       0     254     469040        0
       malloc-4096   4096     108       6        5229       0       2     466944        0
         VM OBJECT    264    1543     107       70030       0      30     435600        0
            THREAD   1808     178      31        6009       0       8     377872        0
            lkpimm    160       1    2324           1       0      62     372000        0
          lkpicurr    160       2    2323           2       0      62     372000        0
       malloc-2048   2048     128      40        5068       0       8     344064        0
         malloc-64     64    4197     465       83586       0     254     298368        0
             VNODE    448     572      76        4383       0      30     290304        0
         MAP ENTRY     96    2662     362      267121       0     126     290304        0
           sctp_ep   1280     126      84        5064       0     254     268800        0
      malloc-65536  65536       4       0           4       0       1     262144        0
         malloc-16     16   14211     539       21223       0     254     236000        0
      malloc-32768  32768       0       7        1953       0       1     229376        0
            DEVCTL   1024       0     220         154       0       0     225280        0
        malloc-256    256     272     508       24312       0      62     199680        0
      malloc-65536  65536       1       2         108       0       1     196608        0
         UMA Zones    768     242       2         242       0      16     187392        0
        sctp_raddr    736     120     133        2598       0     254     186208        0
         malloc-32     32    5365     179        5742       0     254     177408        0
           VMSPACE   2544      58      11        4648       0       4     175536        0
        malloc-128    128    1264      69       33229       0     126     170624        0
        malloc-128    128    1200      71        9870       0     126     162688        0
       mbuf_packet    256     101     529       17124       0     254     161280        0
       malloc-1024   1024      94      54        2680       0      16     151552        0
            socket    944      76      80        8965       0     254     147264        0
       FFS2 dinode    256     533      37        4342       0      62     145920        0
        malloc-384    384     153     217        4056       0      30     142080        0
       S VFS Cache    104    1027     338        4926       0     126     141960        0
              PROC   1336      84      18        4673       0       8     136272        0
      malloc-65536  65536       2       0           2       0       1     131072        0
      malloc-65536  65536       0       2         420       0       1     131072        0
      malloc-65536  65536       2       0           2       0       1     131072        0
      malloc-65536  65536       0       2           8       0       1     131072        0
            clpbuf   2624       0      48         497       0      16     125952        0
       malloc-2048   2048       7      53       13353       0       8     122880        0
        malloc-384    384     222      98        7592       0      30     122880        0
        128 Bucket   1024      86      33        2490       0      16     121856        0
       malloc-1024   1024     110       6         127       0      16     118784        0
          ksiginfo    112      87     957        5886       0     126     116928        0
        malloc-256    256     191     259       14167       0      62     115200        0
         filedesc0   1072      84      21        4712       0       8     112560        0
        malloc-128    128     448     327        4267       0     126      99200        0
          UMA Kegs    384     227       6         227       0      30      89472        0
      malloc-16384  16384       4       1         179       0       1      81920        0
       malloc-8192   8192       5       4         134       0       1      73728        0
         64 Bucket    512      96      48       23898       0      30      73728        0
             g_bio    408       0     180       45704       0      30      73440        0
        malloc-256    256     177      93        5551       0      62      69120        0
      malloc-32768  32768       0       2         130       0       1      65536        0
      malloc-32768  32768       2       0           2       0       1      65536        0
       malloc-8192   8192       5       3          20       0       1      65536        0
         32 Bucket    256      67     143      258038       0      62      53760        0
       malloc-4096   4096      12       1          23       0       2      53248        0
        sctp_chunk    152     100     238        1810       0     254      51376        0
        malloc-256    256     151      44         375       0      62      49920        0
      malloc-16384  16384       3       0           3       0       1      49152        0
       malloc-8192   8192       6       0           6       0       1      49152        0
       malloc-2048   2048       4      20         511       0       8      49152        0
         malloc-64     64     597     159       22716       0     254      48384        0
        malloc-256    256     114      51        1167       0      62      42240        0
            pcpu-8      8    4773     347        5790       0     254      40960        0
             tcpcb   1080       4      31         972       0     254      37800        0
           DIRHASH   1024      34       2          34       0      16      36864        0
             NAMEI   1024       0      36       31360       0      16      36864        0
       malloc-4096   4096       9       0           9       0       2      36864        0
         malloc-64     64     478      89         690       0     254      36288        0
             Files     80     318     132       21186       0     126      36000        0
        malloc-384    384      79      11         179       0      30      34560        0
              pipe    744      25      20         489       0      16      33480        0
      malloc-32768  32768       1       0           1       0       1      32768        0
       malloc-8192   8192       4       0           4       0       1      32768        0
           pcpu-64     64     487      25         487       0     254      32768        0
         TURNSTILE    136     210      21         210       0      62      31416        0
       malloc-2048   2048      12       2         203       0       8      28672        0
       malloc-1024   1024      13      15        1546       0      16      28672        0
             KNOTE    160      28     147       96606       0      62      28000        0
            ttyinq    160     135      40         300       0      62      28000        0
          8 Bucket     80      53     297        2236       0     126      28000        0
     udplite_inpcb    496       0      56         957       0     254      27776        0
         tcp_inpcb    496       4      52         972       0     254      27776        0
       malloc-8192   8192       2       1           4       0       1      24576        0
       malloc-4096   4096       3       3        3849       0       2      24576        0
       malloc-2048   2048       8       4         230       0       8      24576        0
               PWD     32      37     719        3738       0     254      24192        0
         malloc-64     64     273     105        9568       0     254      24192        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         491       0      16      22464        0
       malloc-4096   4096       2       3          85       0       2      20480        0
       malloc-4096   4096       2       3           5       0       2      20480        0
       malloc-2048   2048       2       8         200       0       8      20480        0
       malloc-1024   1024      17       3          17       0      16      20480        0
         malloc-64     64     132     183        4606       0     254      20160        0
         malloc-32     32     242     388        7965       0     254      20160        0
        malloc-128    128      90      65        3823       0     126      19840        0
       Mountpoints   2752       2       5           2       0       4      19264        0
        malloc-384    384      36      14          36       0      30      19200        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-2048   2048       4       4          23       0       8      16384        0
       malloc-1024   1024      11       5          13       0      16      16384        0
        malloc-512    512       6      26         525       0      30      16384        0
         malloc-64     64     158      94         212       0     254      16128        0
         malloc-32     32     311     193       12939       0     254      16128        0
         16 Bucket    144      66      46         631       0      62      16128        0
          2 Bucket     32      60     444        1267       0     254      16128        0
      vtnet_tx_hdr     24       0     668      986344       0     254      16032        0
             unpcb    256      20      40        1506       0     254      15360        0
        malloc-384    384      36       4          38       0      30      15360        0
        malloc-256    256      44      16         352       0      62      15360        0
        malloc-256    256      29      31        3844       0      62      15360        0
        malloc-256    256      34      26        1646       0      62      15360        0
      tcp_rack_pcb    832       0      18         185       0      16      14976        0
       malloc-1024   1024       8       4           9       0      16      12288        0
        malloc-512    512       3      21         193       0      30      12288        0
        malloc-512    512      10      14         201       0      30      12288        0
        malloc-512    512      12      12          25       0      30      12288        0
sctp_stream_msg_out    112      38      70         663       0     254      12096        0
         malloc-64     64     103      86         606       0     254      12096        0
         malloc-32     32     161     217         280       0     254      12096        0
         malloc-16     16     346     404         610       0     254      12000        0
             ripcb    496       5      19         130       0     254      11904        0
         udp_inpcb    496       6      18         290       0     254      11904        0
        malloc-128    128       7      86         490       0     126      11904        0
              kenv    258      15      30        1042       0      30      11610        0
     routing nhops    256      27      18          35       0      62      11520        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-1024   1024       2       6          15       0      16       8192        0
       malloc-1024   1024       1       7          93       0      16       8192        0
        malloc-512    512       1      15          10       0      30       8192        0
        malloc-512    512       4      12           4       0      30       8192        0
           pf tags    104       0      78          23       0     126       8112        0
           rtentry    176      31      15          35       0      62       8096        0
              PGRP     88      35      57          59       0     126       8096        0
          rl_entry     40      95     107          95       0     254       8080        0
   sctp_asconf_ack     48       0     168          33       0     254       8064        0
        sctp_laddr     48      20     148        1151       0     254       8064        0
      tcp_rack_map    112       0      72         279       0     126       8064        0
             udpcb     32       6     246        1247       0     254       8064        0
              ertt     72       4     108         972       0     126       8064        0
         malloc-64     64      17     109         118       0     254       8064        0
         malloc-32     32     148     104         199       0     254       8064        0
         malloc-32     32      21     231          53       0     254       8064        0
         malloc-32     32      38     214         854       0     254       8064        0
          4 Bucket     48       7     161         117       0     254       8064        0
         malloc-16     16       6     494         987       0     254       8000        0
         malloc-16     16      16     484          21       0     254       8000        0
         malloc-16     16     187     313        1417       0     254       8000        0
         malloc-16     16      29     471       28838       0     254       8000        0
         malloc-16     16     230     270        8013       0     254       8000        0
        malloc-128    128      25      37         130       0     126       7936        0
        malloc-128    128      12      50         214       0     126       7936        0
        sctp_readq    152       1      51         356       0     254       7904        0
               AIO    208       0      38           4       0      62       7904        0
           cryptop    280       0      28          41       0      30       7840        0
             AIOCB    552       0      14          16       0      16       7728        0
        malloc-384    384       1      19         349       0      30       7680        0
            AIOLIO    272       0      28           4       0      30       7616        0
     FPU_save_area    832       1       8           1       0      16       7488        0
            cpuset    104       7      55           9       0     126       6448        0
 epoch_record pcpu    256       4      12           4       0      62       4096        0
       malloc-2048   2048       1       1           1       0       8       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
              AIOP     32       4     122           4       0     254       4032        0
       UMA Slabs 1    176       9      13           9       0      62       3872        0
        malloc-384    384       1       9           2       0      30       3840        0
            mqnode    416       3       6           3       0      30       3744        0
        KMAP ENTRY     96      12      27          14       0       0       3744        0
              vmem   1856       1       1           1       0       8       3712        0
tfo_ccache_entries     80       1      31           1       0     126       2560        0
         domainset     40       0      63           2       0     254       2520        0
           SMR CPU     32       3      60           3       0     254       2016        0
        SMR SHARED     24       3      60           3       0     254       1512        0
       FFS1 dinode    128       0       0           0       0     126          0        0
            da_ccb    544       0       0           0       0      16          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
       sctp_asconf     40       0       0           0       0     254          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      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    304       0       0           0       0     254          0        0
          pf mtags     48       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
               tfo      4       0       0           0       0     254          0        0
          sackhole     32       0       0           0       0     254          0        0
             tcptw     88       0       0           0       0     254          0        0
               ipq     56       0       0           0       0     254          0        0
    IPsec SA lft_c     16       0       0           0       0     254          0        0
            itimer    352       0       0           0       0      30          0        0
           NCLNODE    584       0       0           0       0      16          0        0
        mqnotifier    216       0       0           0       0      62          0        0
            mvdata     64       0       0           0       0     254          0        0
            mqueue    248       0       0           0       0      62          0        0
        TMPFS node    224       0       0           0       0      62          0        0
     LTS VFS Cache    360       0       0           0       0      30          0        0
       L VFS Cache    320       0       0           0       0      30          0        0
     STS VFS Cache    144       0       0           0       0      62          0        0
  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
        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-16384  16384       0       0           0       0       1          0        0
       malloc-8192   8192       0       0           0       0       1          0        0
       malloc-4096   4096       0       0           0       0       2          0        0
        malloc-512    512       0       0           0       0      30          0        0
        malloc-512    512       0       0           0       0      30          0        0
         malloc-32     32       0       0           0       0     254          0        0
         malloc-16     16       0       0           0       0     254          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 (10):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/07/10 08:42 freebsd-src 105b68b42dd1 8f5a7b8c console log report ci-freebsd-main panic: ASan: Invalid access, 4-byte read in sctp_connectx_helper_find
2021/07/10 06:48 freebsd-src 105b68b42dd1 8f5a7b8c console log report ci-freebsd-main panic: ASan: Invalid access, 4-byte read in sctp_connectx_helper_find
2021/07/10 02:22 freebsd-src 105b68b42dd1 8f5a7b8c console log report ci-freebsd-main panic: ASan: Invalid access, 4-byte read in sctp_connectx_helper_find
2021/07/10 00:49 freebsd-src 105b68b42dd1 8f5a7b8c console log report ci-freebsd-main panic: ASan: Invalid access, 4-byte read in sctp_connectx_helper_find
2021/07/10 13:09 freebsd-src 63ca9ea4f34d 8f5a7b8c console log report ci-freebsd-i386 panic: ASan: Invalid access, 4-byte read in sctp_connectx_helper_find
2021/07/10 11:27 freebsd-src 63ca9ea4f34d 8f5a7b8c console log report ci-freebsd-i386 panic: ASan: Invalid access, 4-byte read in sctp_connectx_helper_find
2021/07/10 08:30 freebsd-src 63ca9ea4f34d 8f5a7b8c console log report ci-freebsd-i386 panic: ASan: Invalid access, 4-byte read in sctp_connectx_helper_find
2021/07/10 04:36 freebsd-src 63ca9ea4f34d 8f5a7b8c console log report ci-freebsd-i386 panic: ASan: Invalid access, 4-byte read in sctp_connectx_helper_find
2021/07/10 02:03 freebsd-src a65fe39d5418 8f5a7b8c console log report ci-freebsd-i386 panic: ASan: Invalid access, 4-byte read in sctp_connectx_helper_find
2021/07/09 23:07 freebsd-src a65fe39d5418 8f5a7b8c console log report ci-freebsd-i386 panic: ASan: Invalid access, 4-byte read in sctp_connectx_helper_find
* Struck through repros no longer work on HEAD.