syzbot


panic: ASan: Invalid access, 1-byte write at ADDR, UMAUseAfterFree(fd)

Status: closed as dup on 2021/09/07 23:38
Reported-by: syzbot+b0bb0e2ff6c6875647e8@syzkaller.appspotmail.com
First crash: 1055d, last: 998d
Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
panic: mtx_lock() of spin mutex (null) @ /syzkaller/managers/main/kernel/sys/netinet/tcp_output.c:LINE syz 707 1015d 1900d
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
freebsd panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd) (2) C 60 49d 729d 0/2 upstream: reported C repro on 2022/05/30 05:43
freebsd panic: ASan: Invalid access, 8-byte write at ADDR, UMAUseAfterFree(fd) 19 1053d 1054d 0/2 auto-closed as invalid on 2021/09/07 16:49
freebsd panic: ASan: Invalid access, 4-byte write at ADDR, UMAUseAfterFree(fd) C 462 788d 1055d 2/2 fixed on 2022/04/03 11:38
freebsd panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd) 8 770d 784d 2/2 fixed on 2022/04/19 22:30

Sample crash report:
panic: ASan: Invalid access, 4-byte write at 0xfffffe009ea92398, UMAUseAfterFree(fd)
cpuid = 1
time = 1629413515
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe0053b65410
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe0053b65570
vpanic() at vpanic+0x2c5/frame 0xfffffe0053b65650
panic() at panic+0xb5/frame 0xfffffe0053b65720
kasan_atomic_fetchadd_int() at kasan_atomic_fetchadd_int+0x225/frame 0xfffffe0053b657e0
sctp_toss_old_asconf() at sctp_toss_old_asconf+0x35c/frame 0xfffffe0053b65870
sctp_handle_asconf_ack() at sctp_handle_asconf_ack+0x69e/frame 0xfffffe0053b65c30
sctp_process_control() at sctp_process_control+0x35a0/frame 0xfffffe0053b66300
sctp_common_input_processing() at sctp_common_input_processing+0xb26/frame 0xfffffe0053b66560
sctp6_input_with_port() at sctp6_input_with_port+0x5a1/frame 0xfffffe0053b66730
sctp6_input() at sctp6_input+0x1f/frame 0xfffffe0053b66750
ip6_input() at ip6_input+0x252d/frame 0xfffffe0053b669b0
swi_net() at swi_net+0x2e5/frame 0xfffffe0053b66a50
ithread_loop() at ithread_loop+0x4f1/frame 0xfffffe0053b66bb0
fork_exit() at fork_exit+0xd0/frame 0xfffffe0053b66bf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0053b66bf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 12 tid 100033 ]
Stopped at      kdb_enter+0x6b: movq    $0,0x28eb59a(%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         0xb5f74366256f869e
rdx         0xdffff7c000000000
rbx                          0
rsp         0xfffffe0053b65550
rbp         0xfffffe0053b65570
rsi                        0x1
rdi         0xffffffff840899c0  cov_trace_pc
r8                         0x3
r9          0xfffffe0053b65088
r10                          0
r11                       0xbf
r12         0xfffffe0053e04900
r13         0xfffffe0053b65501
r14         0xffffffff82c669a0  .str.18
r15         0xffffffff82c669a0  .str.18
rip         0xffffffff817a0d9b  kdb_enter+0x6b
rflags                    0x46
kdb_enter+0x6b: movq    $0,0x28eb59a(%rip)
db> show proc
Process 12 (intr) at 0xfffffe0053df6a70:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff8402d6c0
 ABI: null
 flag: 0x10000284  flag2: 0
 reaper: 0xffffffff8402d6c0 reapsubtree: 12
 sigparent: 20
 vmspace: 0xffffffff8402e640
   (map 0xffffffff8402e640)
   (map.pmap 0xffffffff8402e700)
   (pmap 0xffffffff8402e760)
 threads: 23
100012                   I                                   [swi6: Giant taskq]
100014                   I                                   [swi5: fast taskq]
100019                   I                                   [swi6: task queue]
100032                   I                                   [swi3: vm]
100033                   Run     CPU 1                       [swi1: netisr 0]
100034                   I                                   [swi4: clock (0)]
100035                   I                                   [swi4: clock (1)]
100036                   I                                   [swi1: hpts]
100037                   I                                   [swi1: hpts]
100050                   I                                   [irq24: virtio_pci0]
100051                   I                                   [irq25: virtio_pci0]
100052                   I                                   [irq26: virtio_pci0]
100053                   I                                   [irq27: virtio_pci0]
100054                   I                                   [irq28: virtio_pci1]
100055                   I                                   [irq29: virtio_pci1]
100056                   I                                   [irq30: virtio_pci1]
100057                   I                                   [irq31: virtio_pci1]
100058                   I                                   [irq32: virtio_pci1]
100063                   I                                   [irq10: virtio_pci2]
100065                   I                                   [irq1: atkbd0]
100066                   I                                   [irq12: psm0]
100067                   I                                   [swi0: uart uart++]
100075                   I                                   [swi1: pf send]
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
  962   794   794     0  T       (threaded)                  syz-executor.2
100115                   s                                   syz-executor.2
100297                   RunQ                                syz-executor.2
  961   793   793     0  R       (threaded)                  syz-executor.1
100116                   RunQ                                syz-executor.1
100296                   RunQ                                syz-executor.1
100298                   RunQ                                syz-executor.1
  958   790   790     0  R       (threaded)                  syz-executor.0
100202                   RunQ                                syz-executor.0
100291                   RunQ                                syz-executor.0
  943     1   943     0  Rs                                  rtsol
  942     1   942     0  Ss      select  0xfffffe009ea8aac0  rtsol
  939     1   939     0  Ss      select  0xfffffe009ea865c0  rtsol
  932   810   436     0  S       select  0xfffffe009ea8ac40  rtsol
  810   798   436     0  S       wait    0xfffffe0058b01000  sh
  798   436   436     0  S       wait    0xfffffe009e9be000  sh
  794   788   794     0  Rs                                  syz-executor.2
  793   788   793     0  Rs                                  syz-executor.1
  791   788   791     0  Rs                                  syz-executor.3
  790   788   790     0  Rs                                  syz-executor.0
  788   786   786     0  R       (threaded)                  syz-execprog
100104                   S       uwait   0xfffffe0058785300  syz-execprog
100119                   RunQ                                syz-execprog
100120                   S       kqread  0xfffffe009e3f1000  syz-execprog
100121                   S       uwait   0xfffffe009e9c4d80  syz-execprog
100122                   S       uwait   0xfffffe009e9c4e80  syz-execprog
100123                   S       uwait   0xfffffe009e2fa980  syz-execprog
100124                   S       uwait   0xfffffe005888e000  syz-execprog
100125                   S       uwait   0xfffffe005888e100  syz-execprog
100126                   S       uwait   0xfffffe005888ee80  syz-execprog
100128                   S       uwait   0xfffffe009e2faa80  syz-execprog
100127                   S       uwait   0xfffffe005888e480  syz-execprog
  786   784   786     0  Ss      pause   0xfffffe009e9beb20  csh
  784   694   784     0  Ss      select  0xfffffe005888e240  sshd
  760     1   760     0  Ss+     ttyin   0xfffffe0057000cb0  getty
  759     1   759     0  Ss+     ttyin   0xfffffe00575ee4b0  getty
  758     1   758     0  Ss+     ttyin   0xfffffe00575ee8b0  getty
  757     1   757     0  Ss+     ttyin   0xfffffe00575eecb0  getty
  756     1   756     0  Ss+     ttyin   0xfffffe00583bd0b0  getty
  755     1   755     0  Ss+     ttyin   0xfffffe00583bd4b0  getty
  754     1   754     0  Ss+     ttyin   0xfffffe00583bd8b0  getty
  753     1   753     0  Ss+     ttyin   0xfffffe00583bdcb0  getty
  752     1   752     0  Ss+     ttyin   0xfffffe005746e0b0  getty
  698     1   698     0  Ss      nanslp  0xffffffff84059200  cron
  694     1   694     0  Ss      select  0xfffffe009e418640  sshd
  507     1   507     0  Ss      select  0xfffffe009e418740  syslogd
  436     1   436     0  Ss      wait    0xfffffe0058b3ea70  devd
  435     1   435    65  Ss      select  0xfffffe005888eb40  dhclient
  350     1   350     0  Ss      select  0xfffffe009e418940  dhclient
  347     1   347     0  Ss      select  0xfffffe005888ec40  dhclient
   23     0     0     0  RL                                  [syncer]
   22     0     0     0  DL      vlruwt  0xfffffe005875ea70  [vnlru]
   21     0     0     0  RL      (threaded)                  [bufdaemon]
100085                   D       qsleep  0xffffffff8417f2a0  [bufdaemon]
100088                   D       -       0xffffffff83411f80  [bufspacedaemon-0]
100097                   RunQ                                [/ worker]
   20     0     0     0  DL      psleep  0xffffffff841b76c0  [vmdaemon]
   19     0     0     0  DL      (threaded)                  [pagedaemon]
100083                   D       psleep  0xffffffff841ab1f8  [dom0]
100089                   D       launds  0xffffffff841ab204  [laundry: dom0]
100090                   D       umarcl  0xffffffff81e9d870  [uma]
   18     0     0     0  DL      -       0xffffffff83e10320  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff84d764e0  [sctp_iterator]
   16     0     0     0  DL      pftm    0xffffffff8475ae20  [pf purge]
   15     0     0     0  DL      -       0xffffffff8417a4c0  [soaiod4]
    9     0     0     0  DL      -       0xffffffff8417a4c0  [soaiod3]
    8     0     0     0  DL      -       0xffffffff8417a4c0  [soaiod2]
    7     0     0     0  DL      -       0xffffffff8417a4c0  [soaiod1]
    6     0     0     0  DL      (threaded)                  [cam]
100048                   D       -       0xffffffff83c95ac0  [doneq0]
100049                   D       -       0xffffffff83c95a40  [async]
100082                   D       -       0xffffffff83c958c0  [scanner]
   14     0     0     0  DL      seqstat 0xfffffe0056aba888  [sequencer 00]
    5     0     0     0  DL      crypto_ 0xfffffe0053c0cc80  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffffe0053c0cc30  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff841a52a0  [crypto]
   13     0     0     0  DL      (threaded)                  [geom]
100039                   D       -       0xffffffff8402c7c0  [g_event]
100040                   D       -       0xffffffff8402c800  [g_up]
100041                   D       -       0xffffffff8402c840  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100029                   D       -       0xfffffe0053dff000  [thr_0]
100030                   D       -       0xfffffe0053dff080  [thr_1]
100031                   D       -       0xffffffff8417b848  [alloc_0]
   12     0     0     0  RL      (threaded)                  [intr]
100012                   I                                   [swi6: Giant taskq]
100014                   I                                   [swi5: fast taskq]
100019                   I                                   [swi6: task queue]
100032                   I                                   [swi3: vm]
100033                   Run     CPU 1                       [swi1: netisr 0]
100034                   I                                   [swi4: clock (0)]
100035                   I                                   [swi4: clock (1)]
100036                   I                                   [swi1: hpts]
100037                   I                                   [swi1: hpts]
100050                   I                                   [irq24: virtio_pci0]
100051                   I                                   [irq25: virtio_pci0]
100052                   I                                   [irq26: virtio_pci0]
100053                   I                                   [irq27: virtio_pci0]
100054                   I                                   [irq28: virtio_pci1]
100055                   I                                   [irq29: virtio_pci1]
100056                   I                                   [irq30: virtio_pci1]
100057                   I                                   [irq31: virtio_pci1]
100058                   I                                   [irq32: virtio_pci1]
100063                   I                                   [irq10: virtio_pci2]
100065                   I                                   [irq1: atkbd0]
100066                   I                                   [irq12: psm0]
100067                   I                                   [swi0: uart uart++]
100075                   I                                   [swi1: pf send]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffffe0053d54538  [init]
   10     0     0     0  DL      audit_w 0xffffffff841a6240  [audit]
    0     0     0     0  RLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff8402d6c0  [swapper]
100005                   D       -       0xfffffe0053df0e00  [if_config_tqg_0]
100006                   D       -       0xfffffe0053df0d00  [softirq_0]
100007                   D       -       0xfffffe0053df0c00  [softirq_1]
100008                   D       -       0xfffffe0053df0b00  [if_io_tqg_0]
100009                   D       -       0xfffffe0053df0a00  [if_io_tqg_1]
100010                   D       -       0xfffffe0053c07c00  [in6m_free taskq]
100011                   D       -       0xfffffe0053c07b00  [deferred_unmount ta]
100013                   Run     CPU 0                       [thread taskq]
100015                   D       -       0xfffffe0053c07700  [kqueue_ctx taskq]
100016                   D       -       0xfffffe0053c07600  [linuxkpi_irq_wq]
100017                   D       -       0xfffffe0053c07500  [pci_hp taskq]
100018                   D       -       0xfffffe0053c07400  [aiod_kick taskq]
100020                   D       -       0xfffffe0053c07200  [inm_free taskq]
100021                   D       -       0xfffffe0053c07100  [linuxkpi_short_wq_0]
100022                   D       -       0xfffffe0053c07100  [linuxkpi_short_wq_1]
100023                   D       -       0xfffffe0053c07100  [linuxkpi_short_wq_2]
100024                   D       -       0xfffffe0053c07100  [linuxkpi_short_wq_3]
100025                   D       -       0xfffffe0053c07000  [linuxkpi_long_wq_0]
100026                   D       -       0xfffffe0053c07000  [linuxkpi_long_wq_1]
100027                   D       -       0xfffffe0053c07000  [linuxkpi_long_wq_2]
100028                   D       -       0xfffffe0053c07000  [linuxkpi_long_wq_3]
100038                   D       -       0xfffffe0054189e00  [firmware taskq]
100042                   D       -       0xfffffe0054189d00  [crypto_0]
100043                   D       -       0xfffffe0054189d00  [crypto_1]
100059                   D       -       0xfffffe0054189900  [vtnet0 rxq 0]
100060                   D       -       0xfffffe0054189800  [vtnet0 txq 0]
100061                   D       -       0xfffffe0054189700  [vtnet0 rxq 1]
100062                   D       -       0xfffffe0054189600  [vtnet0 txq 1]
100064                   D       vtbslp  0xfffffe0056b1fa00  [virtio_balloon]
100068                   D       -       0xfffffe0054189400  [mca taskq]
100073                   D       -       0xffffffff82c6d921  [deadlkres]
100077                   D       -       0xfffffe0058345b00  [acpi_task_0]
100078                   D       -       0xfffffe0058345b00  [acpi_task_1]
100079                   D       -       0xfffffe0058345b00  [acpi_task_2]
100081                   D       -       0xfffffe0054189a00  [CAM taskq]
db> show all locks
Process 962 (syz-executor.2) thread 0xfffffe009ea593a0 (100297)
exclusive sleep mutex sctp-inp (inp) r = 0 (0xfffffe009ea95468) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:2510
Process 961 (syz-executor.1) thread 0xfffffe009e3ed3a0 (100116)
exclusive sx vm map (user) (vm map (user)) r = 0 (0xfffffe009eaaf060) locked @ /syzkaller/managers/main/kernel/sys/vm/vm_map.c:2127
Process 943 (rtsol) thread 0xfffffe009e9e9ac0 (100133)
exclusive sx so_rcv_sx (so_rcv_sx) r = 0 (0xfffffe009ea948c8) locked @ /syzkaller/managers/main/kernel/sys/kern/uipc_sockbuf.c:491
Process 791 (syz-executor.3) thread 0xfffffe0057001000 (100093)
exclusive lockmgr bufwait (bufwait) r = 0 (0xfffffe0007a3ed60) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_bio.c:3937
exclusive lockmgr ufs (ufs) r = 0 (0xfffffe0058b123f0) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_subr.c:3009
exclusive lockmgr ufs (ufs) r = 0 (0xfffffe009e9cfcb0) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_cache.c:4488
Process 23 (syncer) thread 0xfffffe00587641e0 (100087)
exclusive lockmgr mntfs (mntfs) r = 0 (0xfffffe0058776770) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_subr.c:2617
Process 12 (intr) thread 0xfffffe0053e04900 (100033)
exclusive sleep mutex sctp-tcb (tcb) r = 0 (0xfffffe009ea9cc70) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:2143
Process 0 (kernel) thread 0xfffffe0053df9ac0 (100013)
exclusive sleep mutex kernel arena (kernel arena) r = 0 (0xffffffff840afc80) 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         4217         4339K         4245
          tcp_hpts            6         3201K            6
         sysctloid        34389         2031K        34460
             vtbuf           24         1968K           46
              kobj          327         1308K          486
            newblk           30         1032K          703
          vfscache            3         1025K            3
               pcb           42          553K          886
          inodedep          101          550K          172
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          120          248K         1027
            acpica         1674          184K        55620
         vnet_data            1          168K            1
              vmem            3          146K            4
           tidhash            3          141K            3
            linker          356          140K          396
           pagedep           14          132K          108
        tfo_ccache            1          128K            1
          filedesc           16          121K          224
            DEVFS1          108          108K          125
               sem            4          106K            4
               bus          989           81K         3488
          mtx_pool            2           72K            2
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          510           64K          510
              umtx          330           42K          330
           kdtrace          200           40K         1264
              temp           35           33K         1915
         hostcache            1           32K            1
               shm            1           32K            1
            DEVFS3          127           32K          137
               msg            4           30K            4
        gtaskqueue           18           26K           18
            kbdmux            6           22K            6
        DEVFS_RULE           56           20K           56
            dirrem           77           20K          105
            ifaddr           66           19K           68
               BPF           14           19K           14
         ufs_mount            4           17K            5
              proc            3           17K            3
               tty           16           16K           16
          routetbl          126           16K          401
           ithread           99           16K           99
            bus-sc           34           15K         1691
           lltable           43           14K           43
            KTRACE          100           13K          100
             ifnet            7           13K            7
       ether_multi          152           13K          162
              kenv           95           12K           95
      eventhandler          133           12K          133
         CAM queue            5           11K         1528
              GEOM           61           10K          490
              rman           84           10K          425
          freefile           77           10K          103
         in6_multi           65            9K           65
         bmsafemap            2            9K          143
              UART           12            9K           12
           devstat            4            9K            4
         sctp_timw           32            8K           32
              ksem            1            8K            1
               rpc            2            8K            2
             shmfd            1            8K            1
            kqueue           60            8K          969
       pfs_vncache            1            8K            1
         pfs_nodes           20            8K           20
     audit_evclass          237            8K          295
         taskqueue           63            7K           63
            sglist            5            7K            5
         sctp_atcl           16            6K          799
           CAM DEV            3            6K          510
              cred           23            6K          245
            plimit           20            5K          366
       ufs_dirhash           24            5K           24
               UMA          270            5K          270
          pf_ifnet           10            5K           19
                vt           11            5K           11
         sctp_stro            4            4K          161
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
          savedino           14            4K           33
           acpisem           28            4K           28
           pwddesc           56            4K          963
             hhook           15            4K           17
           session           26            4K           39
            diradd           25            4K          137
             mkdir           24            3K          194
          terminal           11            3K           11
         proc-args           46            3K          568
           uidinfo            3            3K            9
         sctp_stri            4            2K          160
        local_apic            1            2K            1
           io_apic            1            2K            1
       fpukern_ctx            2            2K            2
          indirdep            8            2K           10
         ipsec-saq            2            2K            2
             selfd           32            2K         9586
            ip6ndp           12            2K           14
            Unitno           30            2K           47
             lockf           16            2K           26
          sctp_ifa           13            2K           14
           CAM XPT           22            2K          543
         newdirblk           12            2K           97
          in_multi            6            2K            8
         sctp_atky           24            2K         1196
            select           11            2K           35
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
               msi            9            2K            9
             clone            9            2K            9
               tun            7            2K            7
           softdep            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
             nhops            6            1K            8
       vnodemarker            2            1K           26
      NFSD session            1            1K            1
        CAM periph            4            1K          271
          sctp_ifn            6            1K           14
             ipsec            3            1K            3
               mld            6            1K            6
              igmp            6            1K            6
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           89
          pci_link           10            1K           10
            crypto            4            1K            4
 encap_export_host           12            1K           12
            DEVFSP            8            1K           13
              pfil            4            1K            4
          procdesc            4            1K           10
              cdev            2            1K            2
       inpcbpolicy           14            1K          186
    chacha20random            1            1K            1
               osd            7            1K           18
         sctp_athm           16            1K          799
      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
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8320     986       13362       0     254   38117376        0
              pbuf   2624       0     989           0       0       2    2595136        0
              mbuf    256    8650     920       19769       0     254    2449920        0
          BUF TRIE    144     180   11580         543       0      62    1693440        0
        malloc-384    384    4162       8        4163       0      30    1601280        0
       malloc-4096   4096     384       4        1452       0       2    1589248        0
        malloc-128    128   12200      45       12271       0     126    1567360        0
       UMA Slabs 0    112   10156      29       10156       0     126    1140720        0
         vmem btag     56   15623     120       15623       0     254     881608        0
         FFS inode   1160     507      18         610       0       8     609000        0
        RADIX NODE    144    3369     154       26271       0      62     507312        0
            lkpimm    168       1    2327           1       0      62     391104        0
          lkpicurr    168       2    2326           2       0      62     391104        0
            THREAD   1808     143      22         300       0       8     298320        0
         VM OBJECT    264    1058      52       15573       0      30     293040        0
             VNODE    448     542      70         647       0      30     274176        0
      malloc-65536  65536       4       0           4       0       1     262144        0
         malloc-64     64    3964     131        5810       0     254     262080        0
        256 Bucket   2048     120       4       10886       0       8     253952        0
         malloc-16     16   14022     228       14097       0     254     228000        0
            DEVCTL   1024      22     198         150       0       0     225280        0
      malloc-65536  65536       1       2         137       0       1     196608        0
      malloc-16384  16384       7       5         269       0       1     196608        0
         UMA Zones    768     242       2         242       0      16     187392        0
         malloc-32     32    5303     367        6356       0     254     181440        0
        malloc-256    256     102     528         988       0      62     161280        0
        malloc-128    128    1184      56       25932       0     126     158720        0
       FFS2 dinode    256     507      18         610       0      62     134400        0
         MAP ENTRY     96    1123     263       45193       0     126     133056        0
      malloc-65536  65536       0       2          72       0       1     131072        0
      malloc-65536  65536       2       0           2       0       1     131072        0
       malloc-1024   1024     118       6         136       0      16     126976        0
       S VFS Cache    104    1010     160        1125       0     126     121680        0
          ksiginfo    112      44    1000          80       0     126     116928        0
       malloc-2048   2048       8      46        1085       0       8     110592        0
           VMSPACE   2544      33       9         941       0       4     106848        0
       malloc-4096   4096      26       0          37       0       2     106496        0
      mbuf_cluster   2048      45       1          45       0     254      94208        0
          UMA Kegs    384     227       6         227       0      30      89472        0
              PROC   1336      55       8         962       0       8      84168        0
         filedesc0   1072      56      21         963       0       8      82544        0
       malloc-8192   8192       7       3          35       0       1      81920        0
            socket    944      38      38        1827       0     254      71744        0
             g_bio    408       0     170        5022       0      30      69360        0
      malloc-65536  65536       1       0           1       0       1      65536        0
      malloc-65536  65536       1       0           1       0       1      65536        0
      malloc-32768  32768       2       0           2       0       1      65536        0
      malloc-32768  32768       0       2         130       0       1      65536        0
           sctp_ep   1280       9      39         399       0     254      61440        0
        128 Bucket   1024      39      20         636       0      16      60416        0
       malloc-2048   2048       9      19         424       0       8      57344        0
         sctp_asoc   2288       4      21         161       0     254      57200        0
        malloc-384    384      90      50         873       0      30      53760        0
        malloc-256    256     177      33         336       0      62      53760        0
      malloc-16384  16384       3       0           3       0       1      49152        0
       malloc-8192   8192       6       0           6       0       1      49152        0
        malloc-128    128     344      28         598       0     126      47616        0
        malloc-256    256     168      12         512       0      62      46080        0
       malloc-1024   1024       6      38        1536       0      16      45056        0
         malloc-64     64     537     156        1656       0     254      44352        0
        malloc-384    384     100      10         172       0      30      42240        0
         32 Bucket    256      52     113        4807       0      62      42240        0
            clpbuf   2624       0      16          21       0      16      41984        0
       malloc-8192   8192       4       1           6       0       1      40960        0
            pcpu-8      8    4638     482        4794       0     254      40960        0
           DIRHASH   1024      34       2          34       0      16      36864        0
             NAMEI   1024       0      36       13770       0      16      36864        0
         64 Bucket    512      65       7        1406       0      30      36864        0
         malloc-64     64     157     410        1649       0     254      36288        0
         malloc-64     64     499      68       10519       0     254      36288        0
        malloc-128    128      84     195        1239       0     126      35712        0
            da_ccb    544       0      63        1370       0      16      34272        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-16384  16384       2       0          17       0       1      32768        0
      malloc-16384  16384       2       0           2       0       1      32768        0
       malloc-8192   8192       2       2         103       0       1      32768        0
           pcpu-64     64     487      25         487       0     254      32768        0
        malloc-256    256      69      51         749       0      62      30720        0
        malloc-256    256      94      26         697       0      62      30720        0
       malloc-4096   4096       4       3         639       0       2      28672        0
       malloc-1024   1024       6      22         203       0      16      28672        0
        malloc-384    384      67       3          88       0      30      26880        0
         TURNSTILE    136     166      23         166       0      62      25704        0
       malloc-1024   1024      18       6          22       0      16      24576        0
        sctp_raddr    736       3      30         161       0     254      24288        0
            ttyinq    160     135      15         300       0      62      24000        0
        malloc-128    128     137      49         345       0     126      23808        0
        malloc-128    128     145      41         815       0     126      23808        0
           ttyoutq    256      72      18         160       0      62      23040        0
        malloc-256    256      70      20         616       0      62      23040        0
        malloc-256    256      78      12         472       0      62      23040        0
        malloc-256    256      61      29         911       0      62      23040        0
              pipe    744      19      11         344       0      16      22320        0
       malloc-1024   1024      19       1          19       0      16      20480        0
        malloc-512    512      12      28         168       0      30      20480        0
         malloc-64     64     259      56       13970       0     254      20160        0
             Files     80     134     116        8016       0     126      20000        0
        SLEEPQUEUE     88     166      58         166       0     126      19712        0
       Mountpoints   2752       2       5           2       0       4      19264        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-4096   4096       3       1           6       0       2      16384        0
       malloc-2048   2048       4       4          16       0       8      16384        0
       malloc-2048   2048       7       1           7       0       8      16384        0
       malloc-2048   2048       7       1           7       0       8      16384        0
       malloc-2048   2048       7       1           7       0       8      16384        0
         malloc-32     32      49     455         565       0     254      16128        0
         malloc-32     32     301     203        1361       0     254      16128        0
         16 Bucket    144      44      68         305       0      62      16128        0
        malloc-384    384      20      20         367       0      30      15360        0
             tcpcb   1080       3      11           7       0     254      15120        0
       malloc-4096   4096       1       2         285       0       2      12288        0
        malloc-512    512       1      23         119       0      30      12288        0
    ertt_txseginfo     40       0     303         237       0     254      12120        0
          8 Bucket     80      44     106         662       0     126      12000        0
         udp_inpcb    496       8      16         173       0     254      11904        0
        malloc-128    128      73      20         123       0     126      11904        0
        malloc-128    128      62      31        3386       0     126      11904        0
              kenv    258      15      30        1028       0      30      11610        0
     routing nhops    256      26      19          33       0      62      11520        0
             unpcb    256      14      31        1215       0     254      11520        0
       mbuf_packet    256       0      45         677       0     254      11520        0
        malloc-384    384      20      10          22       0      30      11520        0
       malloc-4096   4096       1       1           3       0       2       8192        0
       malloc-2048   2048       0       4          40       0       8       8192        0
       malloc-2048   2048       1       3         192       0       8       8192        0
       malloc-1024   1024       3       5         163       0      16       8192        0
       malloc-1024   1024       2       6          23       0      16       8192        0
        malloc-512    512       7       9           7       0      30       8192        0
        malloc-512    512       2      14          61       0      30       8192        0
           rtentry    176      29      17          33       0      62       8096        0
              PGRP     88      26      66          39       0     126       8096        0
          rl_entry     40      38     164          38       0     254       8080        0
   sctp_asconf_ack     48       1     167         158       0     254       8064        0
        sctp_laddr     48      12     156         492       0     254       8064        0
             udpcb     32       6     246         173       0     254       8064        0
              ertt     72       3     109           7       0     126       8064        0
               PWD     32      17     235         191       0     254       8064        0
         malloc-64     64      74      52          91       0     254       8064        0
         malloc-64     64      12     114         261       0     254       8064        0
         malloc-64     64      51      75         364       0     254       8064        0
         malloc-32     32      42     210          63       0     254       8064        0
         malloc-32     32     129     123         563       0     254       8064        0
         malloc-32     32      98     154         125       0     254       8064        0
         malloc-32     32      87     165         758       0     254       8064        0
         malloc-32     32      60     192        2981       0     254       8064        0
          4 Bucket     48       6     162          60       0     254       8064        0
          2 Bucket     32      47     205         533       0     254       8064        0
      vtnet_tx_hdr     24       0     334        1680       0     254       8016        0
             KNOTE    160      28      22         693       0      62       8000        0
         malloc-16     16      22     478          54       0     254       8000        0
         malloc-16     16      51     449         295       0     254       8000        0
         malloc-16     16      83     417        1073       0     254       8000        0
         malloc-16     16     191     309        1429       0     254       8000        0
         malloc-16     16       9     491           9       0     254       8000        0
         malloc-16     16     282     218         597       0     254       8000        0
         malloc-16     16      14     486       25288       0     254       8000        0
             ripcb    496       3      13           6       0     254       7936        0
         tcp_inpcb    496       3      13           7       0     254       7936        0
        sctp_chunk    152       4      48         160       0     254       7904        0
        malloc-384    384       1      19          27       0      30       7680        0
     FPU_save_area    832       1       8           1       0      16       7488        0
            cpuset    104       8      54           8       0     126       6448        0
 epoch_record pcpu    256       4      12           4       0      62       4096        0
       malloc-4096   4096       0       1           4       0       2       4096        0
       malloc-1024   1024       2       2           2       0      16       4096        0
        malloc-512    512       2       6          40       0      30       4096        0
        malloc-512    512       1       7           1       0      30       4096        0
        malloc-512    512       0       8           1       0      30       4096        0
        malloc-512    512       1       7           1       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           5       0     254       4032        0
       UMA Slabs 1    176       9      13           9       0      62       3872        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
           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
sctp_stream_msg_out    112       0       0           0       0     254          0        0
        sctp_readq    152       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    312       0       0           0       0     254          0        0
           pf tags    104       0       0           0       0     126          0        0
          pf mtags     48       0       0           0       0     254          0        0
      tcp_rack_pcb    832       0       0           0       0      16          0        0
      tcp_rack_map    112       0       0           0       0     126          0        0
       tcp_bbr_pcb    832       0       0           0       0      16          0        0
       tcp_bbr_map    128       0       0           0       0     126          0        0
     udplite_inpcb    496       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
           NCLNODE    592       0       0           0       0      16          0        0
        mqnotifier    216       0       0           0       0      62          0        0
            mvdata     64       0       0           0       0     254          0        0
            mqueue    248       0       0           0       0      62          0        0
        TMPFS node    224       0       0           0       0      62          0        0
     LTS VFS Cache    360       0       0           0       0      30          0        0
       L VFS Cache    320       0       0           0       0      30          0        0
     STS VFS Cache    144       0       0           0       0      62          0        0
           cryptop    280       0       0           0       0      30          0        0
  linux_dma_object     24       0       0           0       0     254          0        0
  linux_dma_pctrie    144       0       0           0       0      62          0        0
   IOMMU_MAP_ENTRY    120       0       0           0       0     126          0        0
      ktls_session    192       0       0           0       0      62          0        0
    mbuf_jumbo_16k  16384       0       0           0       0     254          0        0
     mbuf_jumbo_9k   9216       0       0           0       0     254          0        0
      audit_record   1280       0       0           0       0       8          0        0
         domainset     40       0       0           0       0     254          0        0
        MAC labels     40       0       0           0       0     254          0        0
            vnpbuf   2624       0       0           0       0      64          0        0
            mdpbuf   2624       0       0           0       0       3          0        0
           nfspbuf   2624       0       0           0       0      16          0        0
            swwbuf   2624       0       0           0       0       8          0        0
            swrbuf   2624       0       0           0       0      16          0        0
          umtx_shm     88       0       0           0       0     126          0        0
           umtx pi     96       0       0           0       0     126          0        0
rangeset pctrie nodes    144       0       0           0       0      62          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
       malloc-8192   8192       0       0           0       0       1          0        0
       malloc-4096   4096       0       0           0       0       2          0        0
        malloc-384    384       0       0           0       0      30          0        0
           pcpu-32     32       0       0           0       0     254          0        0
            pcpu-4      4       0       0           0       0     254          0        0
            fakepg    104       0       0           0       0     126          0        0
          UMA Hash    256       0       0           0       0      62          0        0

Crashes (222):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/08/19 23:28 freebsd-src a313b5240a47 e2da378b console log report syz ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/07/09 18:22 freebsd-src a65fe39d5418 281e815f console log report ci-freebsd-main panic: ASan: Invalid access, 1-byte write at ADDR, UMAUseAfterFree(fd)
2021/07/07 23:13 freebsd-src da2f833f7a0b 95793bce console log report ci-freebsd-main panic: ASan: Invalid access, 1-byte write at ADDR, UMAUseAfterFree(fd)
2021/09/02 15:11 freebsd-src 7b529268a54a d0f0970b console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/09/02 13:48 freebsd-src 7b529268a54a d0f0970b console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/09/02 10:12 freebsd-src 7b529268a54a d0f0970b console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/09/02 07:38 freebsd-src 7b529268a54a 7eb7e152 console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/09/01 20:26 freebsd-src d491b42535db 7eb7e152 console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/09/01 17:59 freebsd-src d491b42535db 7eb7e152 console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/09/01 08:22 freebsd-src 9e9ba9c73de9 7eb7e152 console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/09/01 07:14 freebsd-src 9e9ba9c73de9 7eb7e152 console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/09/01 04:53 freebsd-src 9e9ba9c73de9 7eb7e152 console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/31 18:15 freebsd-src 4a36122b1db1 7eb7e152 console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/31 17:13 freebsd-src 4a36122b1db1 7eb7e152 console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/31 14:43 freebsd-src 4a36122b1db1 7eb7e152 console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/31 13:40 freebsd-src 4a36122b1db1 8f58a0ef console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/31 03:32 freebsd-src d39e65b5bdc0 8f58a0ef console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/30 00:46 freebsd-src d98954e22981 be2c130d console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/29 12:23 freebsd-src 22f5f4a14e97 be2c130d console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/29 00:08 freebsd-src 5bdf58e19609 be2c130d console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/28 12:06 freebsd-src 08b9cc316a31 d5a29e53 console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/28 10:04 freebsd-src 08b9cc316a31 d5a29e53 console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/28 06:03 freebsd-src 08b9cc316a31 d5a29e53 console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/27 21:06 freebsd-src b54eec836660 57b01c6e console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/27 19:30 freebsd-src b54eec836660 57b01c6e console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/27 18:08 freebsd-src b54eec836660 57b01c6e console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/27 13:45 freebsd-src 9823a0c0acf4 b318694d console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/27 09:58 freebsd-src 9823a0c0acf4 b318694d console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/26 23:05 freebsd-src 0d28d014c855 b318694d console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/26 21:29 freebsd-src 0d28d014c855 b318694d console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/26 19:15 freebsd-src 0d28d014c855 b318694d console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/26 18:08 freebsd-src 0d28d014c855 b318694d console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/26 13:00 freebsd-src 8d7cd10ba633 b599f2fc console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/26 07:10 freebsd-src 8d7cd10ba633 b599f2fc console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/26 04:32 freebsd-src 8d7cd10ba633 b599f2fc console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/09/02 00:02 freebsd-src d491b42535db 7eb7e152 console log report ci-freebsd-i386 panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/31 06:33 freebsd-src d39e65b5bdc0 8f58a0ef console log report ci-freebsd-i386 panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/31 04:59 freebsd-src d39e65b5bdc0 8f58a0ef console log report ci-freebsd-i386 panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/31 01:43 freebsd-src d39e65b5bdc0 8f58a0ef console log report ci-freebsd-i386 panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/30 14:40 freebsd-src e76c0e4f4563 8f58a0ef console log report ci-freebsd-i386 panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/29 21:51 freebsd-src d98954e22981 be2c130d console log report ci-freebsd-i386 panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/29 10:52 freebsd-src 22f5f4a14e97 be2c130d console log report ci-freebsd-i386 panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/27 22:25 freebsd-src b54eec836660 57b01c6e console log report ci-freebsd-i386 panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/27 12:18 freebsd-src bb958dcf3d8a b318694d console log report ci-freebsd-i386 panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/27 08:47 freebsd-src bb958dcf3d8a b318694d console log report ci-freebsd-i386 panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/26 14:59 freebsd-src da3a09d8941d b599f2fc console log report ci-freebsd-i386 panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
2021/08/26 03:25 freebsd-src 8d7cd10ba633 b599f2fc console log report ci-freebsd-i386 panic: ASan: Invalid access, NUM-byte write at ADDR, UMAUseAfterFree(fd)
* Struck through repros no longer work on HEAD.