panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)

Status: auto-closed as invalid on 2021/09/07 18:42
Reported-by: syzbot+d5a1c5a3c85f69017e7b@syzkaller.appspotmail.com
First crash: 1852d, last: 1849d
▶ ▼ Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
freebsd panic: ASan: Invalid access, NUM-byte read at ADDR, UMAUseAfterFree(fd) (2) 2 syz, C 7 1565d 1567d 2/2 fixed on 2022/04/19 22:30
freebsd panic: ASan: Invalid access, NUM-byte read at ADDR, UMAUseAfterFree(fd) 2 syz, C 515 1569d 1689d 2/2 fixed on 2022/04/16 01:19
freebsd panic: ASan: Invalid access, 4-byte read at ADDR, UMAUseAfterFree(fd) 2 300 1822d 1852d 0/2 auto-closed as invalid on 2021/10/04 10:41
freebsd panic: ASan: Invalid access, 2-byte read at ADDR, UMAUseAfterFree(fd) 2 syz, C 1103 1689d 1850d 2/2 fixed on 2021/12/17 02:33
freebsd panic: ASan: Invalid access, NUM-byte read at ADDR, UMAUseAfterFree(fd) (4) 2 syz, C 1764 193d 1505d 0/2 upstream: reported C repro on 2022/06/18 22:38
freebsd panic: ASan: Invalid access, NUM-byte read at ADDR, UMAUseAfterFree(fd) (3) 2 syz, C 58 1510d 1563d 0/2 closed as invalid on 2022/06/13 20:33

Sample crash report:
panic: ASan: Invalid access, 8-byte read at 0xfffffe00a4c44480, UMAUseAfterFree(fd)
cpuid = 1
time = 1625829361
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe00077f9b70
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe00077f9cd0
vpanic() at vpanic+0x2c5/frame 0xfffffe00077f9db0
panic() at panic+0xb5/frame 0xfffffe00077f9e70
__asan_load8_noabort() at __asan_load8_noabort+0x36f/frame 0xfffffe00077f9f30
__mtx_lock_flags() at __mtx_lock_flags+0x122/frame 0xfffffe00077fa020
sctp_endpoint_probe() at sctp_endpoint_probe+0xce/frame 0xfffffe00077fa090
sctp_findassociation_addr_sa() at sctp_findassociation_addr_sa+0x229/frame 0xfffffe00077fa170
sctp_findassociation_addr() at sctp_findassociation_addr+0x19c/frame 0xfffffe00077fa330
sctp_common_input_processing() at sctp_common_input_processing+0x2bc/frame 0xfffffe00077fa560
sctp6_input_with_port() at sctp6_input_with_port+0x5a1/frame 0xfffffe00077fa730
sctp6_input() at sctp6_input+0x1f/frame 0xfffffe00077fa750
ip6_input() at ip6_input+0x2531/frame 0xfffffe00077fa9b0
swi_net() at swi_net+0x2e5/frame 0xfffffe00077faa50
ithread_loop() at ithread_loop+0x4f1/frame 0xfffffe00077fabb0
fork_exit() at fork_exit+0xd0/frame 0xfffffe00077fabf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00077fabf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 12 tid 100030 ]
Stopped at      kdb_enter+0x6b: movq    $0,0x28f9d2a(%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          0x3d3102c16fbe801
rdx                        0x1
rbx                          0
rsp         0xfffffe00077f9cb0
rbp         0xfffffe00077f9cd0
rsi                          0
rdi         0xffffffff8179b2e9  vprintf+0x319
r8                         0x3
r9          0xfffffe00077f9808
r10                          0
r11                       0xbf
r12         0xfffffe0053df7000
r13         0xfffffe00077f9d01
r14         0xffffffff82c416a0  .str.18
r15         0xffffffff82c416a0  .str.18
rip         0xffffffff8178ed0b  kdb_enter+0x6b
rflags                    0x46
kdb_enter+0x6b: movq    $0,0x28f9d2a(%rip)
db> show proc
Process 12 (intr) at 0xfffffe0053deca70:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff84029dc0
 ABI: null
 flag: 0x10000284  flag2: 0
 reaper: 0xffffffff84029dc0 reapsubtree: 12
 sigparent: 20
 vmspace: 0xffffffff8402ad40
   (map 0xffffffff8402ad40)
   (map.pmap 0xffffffff8402ae00)
   (pmap 0xffffffff8402ae60)
 threads: 23
100010                   I                                   [swi6: task queue]
100011                   I                                   [swi6: Giant taskq]
100014                   I                                   [swi5: fast taskq]
100030                   Run     CPU 1                       [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]
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 1134   828   828     0  RE                                  syz-executor.3
 1070  1064  1070     0  Ss      select  0xfffffe00a4ce3240  dhclient
 1067     1  1067     0  Ss      select  0xfffffe009e9b3dc0  dhclient
 1064  1057   436    65  S       select  0xfffffe00a4c3d040  dhclient
 1057   436   436     0  S       wait    0xfffffe0097874538  sh
  828   780   828     0  Ss      wait    0xfffffe009e9daa70  syz-executor.3
  807   780   807     0  Ss      piperd  0xfffffe009788c5d0  syz-executor.2
  784   780   784     0  Ss      piperd  0xfffffe009e9a7ba0  syz-executor.1
  783   780   783     0  Rs                                  syz-executor.0
  780   778   778     0  S       (threaded)                  syz-fuzzer
100093                   S       uwait   0xfffffe005874ea00  syz-fuzzer
100116                   S       uwait   0xfffffe009e3ed800  syz-fuzzer
100117                   S       uwait   0xfffffe009e3ed900  syz-fuzzer
100118                   S       uwait   0xfffffe005874ef00  syz-fuzzer
100119                   S       uwait   0xfffffe005834c080  syz-fuzzer
100120                   S       kqread  0xfffffe0097920400  syz-fuzzer
100121                   S       uwait   0xfffffe005834c280  syz-fuzzer
100122                   S       uwait   0xfffffe009e2b0600  syz-fuzzer
100123                   S       uwait   0xfffffe009e2b0700  syz-fuzzer
  778   776   778     0  Ss      pause   0xfffffe009e3c95e8  csh
  776   694   776     0  Ss      select  0xfffffe009e3ed3c0  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  0xfffffe009e3ed5c0  sshd
  507     1   507     0  Ss      select  0xfffffe00979084c0  syslogd
  436     1   436     0  Ss      wait    0xfffffe009790d000  devd
  435     1   435    65  Ss      select  0xfffffe009e3ed640  dhclient
  350     1   350     0  Ss      select  0xfffffe0097908240  dhclient
  347     1   347     0  Ss      select  0xfffffe0097908640  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 0xfffffe0097927ce8  [/ 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  0xffffffff81e7e510  [uma]
   18     0     0     0  DL      -       0xffffffff83e0caa0  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff84a5e3c0  [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  RL      (threaded)                  [intr]
100010                   I                                   [swi6: task queue]
100011                   I                                   [swi6: Giant taskq]
100014                   I                                   [swi5: fast taskq]
100030                   Run     CPU 1                       [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       -       0xffffffff82c48620  [deadlkres]
100076                   D       -       0xfffffe0058394e00  [acpi_task_0]
100077                   D       -       0xfffffe0058394e00  [acpi_task_1]
100078                   D       -       0xfffffe0058394e00  [acpi_task_2]
100079                   D       -       0xfffffe0053df6800  [CAM taskq]
 1133   783   783     0  Z                                   syz-executor.0
db> show all locks
Process 12 (intr) thread 0xfffffe0053df7000 (100030)
shared rw sctp-info (sctp-info) r = 0 (0xfffffe00081ae710) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:1981
Process 0 (kernel) thread 0xfffffe0053df21e0 (100012)
exclusive sleep mutex kernel arena (kernel arena) r = 0 (0xffffffff840aa580) 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
           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           35         1033K         1790
          vfscache            3         1025K            3
               pcb           57          571K          824
          inodedep           22          520K          368
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          123          239K         1211
            acpica         1674          184K        54806
         vnet_data            1          168K            1
              vmem            3          146K            4
           tidhash            3          141K            3
            linker          357          140K          397
           pagedep           15          132K          254
        tfo_ccache            1          128K            1
            DEVFS1          107          107K          124
               sem            4          106K            4
          filedesc           12           89K          507
               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          352           44K          352
           kdtrace          199           40K         1692
               BPF           22           36K           22
              temp           35           33K         2004
         hostcache            1           32K            1
               shm            1           32K            1
            DEVFS3          126           32K          136
               msg            4           30K            4
        gtaskqueue           18           26K           18
            kbdmux            6           22K            6
        DEVFS_RULE           56           20K           56
            ifaddr           67           19K           69
         ufs_mount            5           17K            6
              proc            3           17K            3
          routetbl          132           17K          421
               tty           16           16K           16
           ithread           99           16K           99
         sctp_stro           15           15K          184
            bus-sc           33           14K         1684
           lltable           43           14K           44
            KTRACE          100           13K          100
             ifnet            7           13K            7
       ether_multi          152           13K          162
         sctp_atcl           31           12K          565
              kenv           95           12K           95
      eventhandler          133           12K          133
         CAM queue            5           11K         1528
              rman           84           10K          425
              GEOM           60           10K          489
         in6_multi           65            9K           65
         bmsafemap            2            9K          355
              UART           12            9K           12
           devstat            4            9K            4
              ksem            1            8K            1
         sctp_timw           32            8K           32
               rpc            2            8K            2
             shmfd            1            8K           26
       pfs_vncache            1            8K            1
         pfs_nodes           20            8K           20
     audit_evclass          236            8K          294
          freework           29            8K          946
         taskqueue           60            7K           60
            sglist            5            7K            5
           CAM DEV            3            6K          510
              cred           23            6K          214
            kqueue           55            6K         1157
            plimit           21            6K          364
       ufs_dirhash           24            5K           24
            DEVFSP           74            5K           95
               UMA          270            5K          270
          pf_ifnet           10            5K           19
                vt           11            5K           11
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
          kcovinfo           64            4K           68
           acpisem           28            4K           28
             hhook           15            4K           17
           pwddesc           51            4K         1141
           session           25            4K           39
       fpukern_ctx            3            3K            3
          terminal           11            3K           11
         proc-args           44            3K          592
           uidinfo            3            3K            8
             lockf           20            3K           33
        local_apic            1            2K            1
           io_apic            1            2K            1
         ipsec-saq            2            2K            2
         sctp_atky           46            2K          772
             selfd           31            2K        21805
            diradd           15            2K          330
            ip6ndp           12            2K           14
             mkdir           14            2K          482
          sctp_ifa           13            2K           14
            Unitno           27            2K           87
           CAM XPT           22            2K          543
         newdirblk           12            2K          241
          in_multi            6            2K            8
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
            select           10            2K           64
               msi            9            2K            9
             clone            9            2K            9
               tun            7            2K            7
           softdep            1            1K            1
          freeblks            4            1K          325
          indirdep            4            1K          255
            sahead            1            1K            1
          secasvar            1            1K            1
             nhops            6            1K            8
       vnodemarker            2            1K           20
      NFSD session            1            1K            1
        CAM periph            4            1K          271
             ipsec            3            1K            3
          sctp_ifn            6            1K           14
               mld            6            1K            6
              igmp            6            1K            6
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           89
          pci_link           10            1K           10
            crypto            4            1K            4
 encap_export_host           12            1K           12
         sctp_stri            1            1K           46
            dirrem            2            1K          295
          freefile            4            1K          293
              pfil            4            1K            4
              cdev            2            1K            2
         sctp_athm           31            1K          588
          sctp_map           30            1K          368
       inpcbpolicy           15            1K          364
               osd            8            1K           76
    chacha20random            1            1K            1
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
            vnodes            1            1K            1
           CAM SIM            2            1K            2
              ktls            1            1K            1
          procdesc            2            1K           12
            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
             xform            2            1K           55
 CAM I/O Scheduler            1            1K            1
          CAM path            4            1K         1034
          pmchooks            1            1K            1
          nexusdev            7            1K            7
            soname            4            1K         3836
          sctp_vrf            1            1K            1
              vnet            1            1K            1
           entropy            2            1K           39
          acpiintr            1            1K            1
               pmc            1            1K            1
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          filecaps            2            1K           90
          p1003.1b            1            1K            1
            tcp_do            0            0K            0
           tcp_fsb            0            0K           53
        dctcp data            0            0K            0
        cubic data            0            0K            0
          cdg data            0            0K            0
          chd data            0            0K            0
        sctp_mcore            0            0K            0
        sctp_socko            0            0K          273
         sctp_iter            0            0K           12
         sctp_mvrf            0            0K            0
         sctp_cpal            0            0K            0
         sctp_cmsg            0            0K            0
         sctp_stre            0            0K            0
         sctp_athi            0            0K            0
         sctp_a_it            0            0K           12
         sctp_aadr            0            0K            0
         htcp data            0            0K            0
            mqdata            0            0K            0
        vegas data            0            0K            0
          pf_table            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     989      536803       0     254   38129664        0
              pbuf   2624       0     973           0       0       2    2553152        0
              mbuf    256    8671     899      808728       0     254    2449920        0
          BUF TRIE    144     191   11569         990       0      62    1693440        0
        malloc-384    384    4206      14        4207       0      30    1620480        0
        malloc-128    128   11312      65       11424       0     126    1456256        0
        RADIX NODE    144    9466     245       52727       0      62    1398384        0
       malloc-4096   4096     327       2         493       0       2    1347584        0
       UMA Slabs 0    112   10244      13       10244       0     126    1148784        0
         vmem btag     56   15865      22       15865       0     254     889672        0
         FFS inode   1160     510      22         803       0       8     617120        0
            lkpimm    160       1    2324           1       0      62     372000        0
          lkpicurr    160       2    2323           2       0      62     372000        0
      mbuf_cluster   2048     165       1         165       0     254     339968        0
            THREAD   1808     145      31         550       0       8     318208        0
         VM OBJECT    264    1080     105       18170       0      30     312840        0
         malloc-64     64    4163     436       26242       0     254     294336        0
       malloc-4096   4096      64       6        1684       0       2     286720        0
             VNODE    448     547      74         842       0      30     278208        0
      malloc-65536  65536       4       0           4       0       1     262144        0
        256 Bucket   2048     127       1       12182       0       8     262144        0
         malloc-16     16   14061     189       14658       0     254     228000        0
            DEVCTL   1024      21     199         150       0       0     225280        0
      malloc-16384  16384       6       7         252       0       1     212992        0
      malloc-32768  32768       0       6         198       0       1     196608        0
         UMA Zones    768     242       2         242       0      16     187392        0
        malloc-256    256     172     533        3656       0      62     180480        0
         malloc-32     32    5361     183        5556       0     254     177408        0
        malloc-128    128    1265      68       29360       0     126     170624        0
         MAP ENTRY     96    1196     442       58429       0     126     157248        0
        malloc-128    128    1128      50        2713       0     126     150784        0
       FFS2 dinode    256     510      30         803       0      62     138240        0
       S VFS Cache    104    1011     315        1320       0     126     137904        0
      malloc-65536  65536       2       0           2       0       1     131072        0
      malloc-65536  65536       0       2         204       0       1     131072        0
      malloc-65536  65536       2       0           2       0       1     131072        0
          ksiginfo    112      53     991        2990       0     126     116928        0
       malloc-1024   1024     110       2         127       0      16     114688        0
           VMSPACE   2544      29      13        1119       0       4     106848        0
       malloc-2048   2048       7      41        3369       0       8      98304        0
              PROC   1336      52      17        1140       0       8      92184        0
          UMA Kegs    384     227       6         227       0      30      89472        0
            clpbuf   2624       0      32          24       0      16      83968        0
         filedesc0   1072      52      25        1141       0       8      82544        0
      malloc-16384  16384       4       1         179       0       1      81920        0
       malloc-2048   2048      17      21         362       0       8      77824        0
       malloc-8192   8192       5       4         134       0       1      73728        0
             g_bio    408       0     180       10895       0      30      73440        0
        128 Bucket   1024      49      18         672       0      16      68608        0
      malloc-65536  65536       1       0           1       0       1      65536        0
      malloc-65536  65536       0       1           8       0       1      65536        0
      malloc-32768  32768       0       2         130       0       1      65536        0
      malloc-32768  32768       2       0           2       0       1      65536        0
            socket    944      26      42        1969       0     254      64192        0
        malloc-128    128     301     195         742       0     126      63488        0
        malloc-256    256     158      82        1536       0      62      61440        0
        malloc-384    384      21     129         367       0      30      57600        0
         sctp_asoc   2288      15      10         184       0     254      57200        0
       malloc-4096   4096      12       1          23       0       2      53248        0
       malloc-1024   1024      23      29         700       0      16      53248        0
           sctp_ep   1280      15      24         358       0     254      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-256    256     154      26         232       0      62      46080        0
         32 Bucket    256      53     127        6210       0      62      46080        0
         64 Bucket    512      73      15        2773       0      30      45056        0
         malloc-64     64     565     128       17071       0     254      44352        0
       mbuf_packet    256      24     141        1131       0     254      42240        0
           DIRHASH   1024      34       6          34       0      16      40960        0
       malloc-8192   8192       5       0           5       0       1      40960        0
            pcpu-8      8    4655     465        4811       0     254      40960        0
        malloc-256    256     111      39        1005       0      62      38400        0
             NAMEI   1024       0      36       14731       0      16      36864        0
       malloc-4096   4096       9       0           9       0       2      36864        0
         malloc-64     64     478      89         690       0     254      36288        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
        malloc-384    384      75       5         125       0      30      30720        0
       malloc-2048   2048      12       2         203       0       8      28672        0
       malloc-1024   1024      13      15        1287       0      16      28672        0
         TURNSTILE    136     177      33         177       0      62      28560        0
       malloc-8192   8192       2       1           4       0       1      24576        0
        sctp_raddr    736      15      18         184       0     254      24288        0
    ertt_txseginfo     40       0     606        3411       0     254      24240        0
             KNOTE    160      28     122       22320       0      62      24000        0
            ttyinq    160     135      15         300       0      62      24000        0
           ttyoutq    256      72      18         160       0      62      23040        0
        malloc-384    384      31      29         565       0      30      23040        0
        malloc-256    256      64      26         674       0      62      23040        0
             tcpcb   1080       4      17          65       0     254      22680        0
              pipe    744      20      10         361       0      16      22320        0
       malloc-4096   4096       3       2         425       0       2      20480        0
       malloc-4096   4096       2       3           5       0       2      20480        0
       malloc-2048   2048       5       5         104       0       8      20480        0
       malloc-1024   1024      17       3          17       0      16      20480        0
         malloc-64     64      38     277         940       0     254      20160        0
         malloc-32     32     291     339        4909       0     254      20160        0
             Files     80     189      61        8473       0     126      20000        0
          8 Bucket     80      49     201         877       0     126      20000        0
        malloc-128    128       7     148         261       0     126      19840        0
        SLEEPQUEUE     88     177      47         177       0     126      19712        0
       Mountpoints   2752       2       5           2       0       4      19264        0
        malloc-384    384      32      18          34       0      30      19200        0
        malloc-384    384      36      14          36       0      30      19200        0
        malloc-256    256      39      36         218       0      62      19200        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-4096   4096       2       2          85       0       2      16384        0
       malloc-2048   2048       2       6          29       0       8      16384        0
       malloc-1024   1024      11       5          11       0      16      16384        0
        malloc-512    512      10      22         206       0      30      16384        0
               PWD     32      15     489         329       0     254      16128        0
         malloc-64     64     190      62        2431       0     254      16128        0
         malloc-64     64     155      97         159       0     254      16128        0
         udp_inpcb    496       7      25         200       0     254      15872        0
        malloc-128    128      88      36         338       0     126      15872        0
        malloc-256    256      35      25         322       0      62      15360        0
        malloc-256    256      34      26         761       0      62      15360        0
      tcp_rack_pcb    832       0      18          53       0      16      14976        0
       tcp_bbr_pcb    832       0      18           2       0      16      14976        0
       malloc-1024   1024       8       4           9       0      16      12288        0
         malloc-32     32     160     218         271       0     254      12096        0
         malloc-32     32      53     325        1012       0     254      12096        0
         16 Bucket    144      52      32         286       0      62      12096        0
      vtnet_tx_hdr     24       0     501      266108       0     254      12024        0
         malloc-16     16     346     404         584       0     254      12000        0
     udplite_inpcb    496       0      24          86       0     254      11904        0
         tcp_inpcb    496       6      18          65       0     254      11904        0
              kenv    258      15      30        1033       0      30      11610        0
     routing nhops    256      27      18          34       0      62      11520        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-2048   2048       2       2           2       0       8       8192        0
       malloc-1024   1024       2       6          12       0      16       8192        0
       malloc-1024   1024       1       7          54       0      16       8192        0
        malloc-512    512       3      13          21       0      30       8192        0
        malloc-512    512       6      10           6       0      30       8192        0
        malloc-512    512       1      15          47       0      30       8192        0
           rtentry    176      30      16          34       0      62       8096        0
              PGRP     88      25      67          39       0     126       8096        0
          rl_entry     40      55     147          55       0     254       8080        0
sctp_stream_msg_out    112       7      65          38       0     254       8064        0
        sctp_laddr     48       0     168          56       0     254       8064        0
      tcp_rack_map    112       0      72          60       0     126       8064        0
             udpcb     32       6     246         286       0     254       8064        0
              ertt     72       4     108          65       0     126       8064        0
         malloc-64     64      12     114          96       0     254       8064        0
         malloc-64     64      81      45         102       0     254       8064        0
         malloc-32     32     138     114         193       0     254       8064        0
         malloc-32     32      21     231          93       0     254       8064        0
         malloc-32     32      38     214         810       0     254       8064        0
          4 Bucket     48       7     161          65       0     254       8064        0
          2 Bucket     32      55     197         592       0     254       8064        0
         malloc-16     16       6     494          72       0     254       8000        0
         malloc-16     16      16     484          19       0     254       8000        0
         malloc-16     16     187     313        1417       0     254       8000        0
         malloc-16     16      26     474       25353       0     254       8000        0
         malloc-16     16      39     461         625       0     254       8000        0
             ripcb    496       2      14          13       0     254       7936        0
        malloc-128    128      25      37         124       0     126       7936        0
        malloc-128    128      10      52          70       0     126       7936        0
        sctp_chunk    152       9      43          53       0     254       7904        0
             unpcb    256      11      19        1220       0     254       7680        0
        malloc-384    384       1      19         349       0      30       7680        0
     FPU_save_area    832       1       8           1       0      16       7488        0
            cpuset    104       7      55          89       0     126       6448        0
         domainset     40       0     126          62       0     254       5040        0
 epoch_record pcpu    256       4      12           4       0      62       4096        0
       malloc-2048   2048       1       1           1       0       8       4096        0
        malloc-512    512       1       7           2       0      30       4096        0
        malloc-512    512       4       4           4       0      30       4096        0
           pcpu-16     16       7     249           7       0     254       4096        0
         hostcache     64       1      62           1       0     254       4032        0
          syncache    168       0      24           4       0     254       4032        0
       tcp_bbr_map    128       0      31           8       0     126       3968        0
        sctp_readq    152       1      25          23       0     254       3952        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
           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_ack     48       0       0           0       0     254          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 tags    104       0       0           0       0     126          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
           tcp_log    416       0       0           0       0     254          0        0
          tcpreass     48       0       0           0       0     254          0        0
tfo_ccache_entries     80       0       0           0       0     126          0        0
               tfo      4       0       0           0       0     254          0        0
          sackhole     32       0       0           0       0     254          0        0
             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
            AIOLIO    272       0       0           0       0      30          0        0
             AIOCB    552       0       0           0       0      16          0        0
              AIOP     32       0       0           0       0     254          0        0
               AIO    208       0       0           0       0      62          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
           NCLNODE    584       0       0           0       0      16          0        0
     LTS VFS Cache    360       0       0           0       0      30          0        0
       L VFS Cache    320       0       0           0       0      30          0        0
     STS VFS Cache    144       0       0           0       0      62          0        0
           cryptop    280       0       0           0       0      30          0        0
  linux_dma_object     24       0       0           0       0     254          0        0
  linux_dma_pctrie    144       0       0           0       0      62          0        0
   IOMMU_MAP_ENTRY    120       0       0           0       0     126          0        0
      ktls_session    192       0       0           0       0      62          0        0
    mbuf_jumbo_16k  16384       0       0           0       0     254          0        0
     mbuf_jumbo_9k   9216       0       0           0       0     254          0        0
      audit_record   1280       0       0           0       0       8          0        0
        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-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 (88):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/07/09 11:16 freebsd-src a65fe39d5418 281e815f console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/09 06:11 freebsd-src 25a66f1fb177 1b20171a console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/09 04:40 freebsd-src 25a66f1fb177 1b20171a console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/09 02:33 freebsd-src 25a66f1fb177 1b20171a console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 21:12 freebsd-src e88c3b1b02a6 1b20171a console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 16:48 freebsd-src e88c3b1b02a6 1aade754 console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 12:28 freebsd-src e88c3b1b02a6 1aade754 console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 10:06 freebsd-src e88c3b1b02a6 1aade754 console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 09:45 freebsd-src e88c3b1b02a6 1aade754 console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 08:58 freebsd-src e88c3b1b02a6 1aade754 console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 08:35 freebsd-src e88c3b1b02a6 1aade754 console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 08:04 freebsd-src da2f833f7a0b 1aade754 console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 05:58 freebsd-src da2f833f7a0b 95793bce console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 04:50 freebsd-src da2f833f7a0b 95793bce console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 04:14 freebsd-src da2f833f7a0b 95793bce console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 04:03 freebsd-src da2f833f7a0b 95793bce console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 02:22 freebsd-src da2f833f7a0b 95793bce console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 02:02 freebsd-src da2f833f7a0b 95793bce console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/07 22:38 freebsd-src da2f833f7a0b 95793bce console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/07 22:11 freebsd-src da2f833f7a0b 95793bce console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/07 16:17 freebsd-src da2f833f7a0b 4846d5c1 console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/07 15:49 freebsd-src da2f833f7a0b 4846d5c1 console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/07 15:10 freebsd-src da2f833f7a0b 4846d5c1 console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/07 07:10 freebsd-src da2f833f7a0b 4846d5c1 console log report ci-freebsd-main panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/09 18:20 freebsd-src a65fe39d5418 281e815f console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/09 17:08 freebsd-src a65fe39d5418 281e815f console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/09 14:44 freebsd-src a65fe39d5418 281e815f console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/09 13:48 freebsd-src a65fe39d5418 281e815f console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/09 12:36 freebsd-src a65fe39d5418 281e815f console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/09 07:25 freebsd-src bf3a385217ce 1b20171a console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/09 00:41 freebsd-src bf3a385217ce 1b20171a console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 19:50 freebsd-src e88c3b1b02a6 1b20171a console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 15:42 freebsd-src e88c3b1b02a6 1aade754 console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 14:33 freebsd-src e88c3b1b02a6 1aade754 console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 10:54 freebsd-src e88c3b1b02a6 1aade754 console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 09:41 freebsd-src e88c3b1b02a6 1aade754 console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 09:14 freebsd-src e88c3b1b02a6 1aade754 console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 09:12 freebsd-src e88c3b1b02a6 1aade754 console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 07:53 freebsd-src 48b4fe050328 1aade754 console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 06:22 freebsd-src 48b4fe050328 95793bce console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 04:22 freebsd-src 48b4fe050328 95793bce console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 01:03 freebsd-src 48b4fe050328 95793bce console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/08 00:48 freebsd-src 48b4fe050328 95793bce console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/07 20:18 freebsd-src 48b4fe050328 95793bce console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/07 20:12 freebsd-src 48b4fe050328 95793bce console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
2021/07/07 15:03 freebsd-src a7b05eb16c9d 4846d5c1 console log report ci-freebsd-i386 panic: ASan: Invalid access, 8-byte read at ADDR, UMAUseAfterFree(fd)
* Struck through repros no longer work on HEAD.