syzbot


panic: Memory modified after free ADDR(256) val=ADDR @ ADDR

Status: closed as dup on 2021/05/21 13:26
Reported-by: syzbot+d627d01a95da99bb5db6@syzkaller.appspotmail.com
First crash: 587d, last: 567d
Duplicate of (1):
Title Repro Cause bisect Fix bisect Count Last Reported
panic: Memory modified after free ADDR(4096) val=ADDR @ ADDR C 1 572d 572d

Sample crash report:
panic: Memory modified after free 0xfffff80024b71600(256) val=214e7e44 @ 0xfffff80024b71600

cpuid = 0
time = 1621301200
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe008878a420
vpanic() at vpanic+0x1c7/frame 0xfffffe008878a480
panic() at panic+0x43/frame 0xfffffe008878a4e0
trash_ctor() at trash_ctor+0xa8/frame 0xfffffe008878a520
item_ctor() at item_ctor+0x1c8/frame 0xfffffe008878a580
tcp_output() at tcp_output+0x22ab/frame 0xfffffe008878a760
tcp_usr_send() at tcp_usr_send+0x762/frame 0xfffffe008878a840
sosend_generic() at sosend_generic+0x99d/frame 0xfffffe008878a930
sosend() at sosend+0xc6/frame 0xfffffe008878a9a0
soo_write() at soo_write+0x62/frame 0xfffffe008878a9e0
dofilewrite() at dofilewrite+0xb0/frame 0xfffffe008878aa30
sys_write() at sys_write+0x10c/frame 0xfffffe008878aab0
amd64_syscall() at amd64_syscall+0x247/frame 0xfffffe008878abf0
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe008878abf0
--- syscall (4, FreeBSD ELF64, sys_write), rip = 0x80090d1ea, rsp = 0x7fffffffa4b8, rbp = 0x7fffffffa4f0 ---
KDB: enter: panic
[ thread pid 781 tid 100117 ]
Stopped at      kdb_enter+0x67: movq    $0,0x163930e(%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                       0x80
rdx         0xffffffff819c26b1
rbx                          0
rsp         0xfffffe008878a400
rbp         0xfffffe008878a420
rsi                        0x1
rdi                          0
r8                           0
r9          0x8080808080808080
r10         0xfffffe008878a2f0
r11              0x1ff77fff59c
r12         0xffffffff82267b80  ddb_dbbe
r13                          0
r14         0xffffffff81a73b35
r15         0xffffffff81a73b35
rip         0xffffffff8112faf7  kdb_enter+0x67
rflags                    0x86
kdb_enter+0x67: movq    $0,0x163930e(%rip)
db> show proc
Process 781 (sshd) at 0xfffff800268b2a70:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 694 at 0xfffff800262d7000
 ABI: FreeBSD ELF64
 flag: 0x10004100  flag2: 0
 arguments: sshd: root@notty
 reaper: 0xfffff80004bc7538 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffffe00042273e0
   (map 0xfffffe00042273e0)
   (map.pmap 0xfffffe00042274a0)
   (pmap 0xfffffe0004227500)
 threads: 1
100117                   Run     CPU 0                       sshd
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
  842   785   783     0  R       CPU 1                       syz-executor8578089
  785   783   783     0  S       nanslp  0xffffffff8273c560  syz-executor8578089
  783   781   783     0  Ss      pause   0xfffff800268b25e8  csh
  781   694   781     0  Rs      CPU 0                       sshd
  760     1   760     0  Ss+     ttyin   0xfffff80015465cb0  getty
  759     1   759     0  Ss+     ttyin   0xfffff80015afe4b0  getty
  758     1   758     0  Ss+     ttyin   0xfffff80015afecb0  getty
  757     1   757     0  Ss+     ttyin   0xfffff80015a864b0  getty
  756     1   756     0  Ss+     ttyin   0xfffff80015a86cb0  getty
  755     1   755     0  Ss+     ttyin   0xfffff80015a8a4b0  getty
  754     1   754     0  Ss+     ttyin   0xfffff80015a8acb0  getty
  753     1   753     0  Ss+     ttyin   0xfffff80015a8d4b0  getty
  752     1   752     0  Ss+     ttyin   0xfffff80015a8dcb0  getty
  750     1    24     0  S+      piperd  0xfffff800264515d0  logger
  749   748    24     0  S+      nanslp  0xffffffff8273c561  sleep
  748     1    24     0  S+      wait    0xfffff80015ca3000  sh
  698     1   698     0  Ss      nanslp  0xffffffff8273c561  cron
  694     1   694     0  Ss      select  0xfffff80015ec5140  sshd
  507     1   507     0  Ss      select  0xfffff8002635ebc0  syslogd
  436     1   436     0  Ss      select  0xfffff80015eada40  devd
  435     1   435    65  Ss      select  0xfffff80015eadec0  dhclient
  350     1   350     0  Ss      select  0xfffff80015db7740  dhclient
  347     1   347     0  Ss      select  0xfffff80015ec52c0  dhclient
   23     0     0     0  DL      vlruwt  0xfffff80015ca3538  [vnlru]
   22     0     0     0  DL      syncer  0xffffffff8282b9d0  [syncer]
   21     0     0     0  DL      (threaded)                  [bufdaemon]
100081                   D       qsleep  0xffffffff8282aa80  [bufdaemon]
100086                   D       -       0xffffffff8220ae80  [bufspacedaemon-0]
100098                   D       sdflush 0xfffff80004dfc4e8  [/ worker]
   20     0     0     0  DL      psleep  0xffffffff828528c8  [vmdaemon]
   19     0     0     0  DL      (threaded)                  [pagedaemon]
100079                   D       psleep  0xffffffff82846d38  [dom0]
100087                   D       launds  0xffffffff82846d44  [laundry: dom0]
100088                   D       umarcl  0xffffffff815cb470  [uma]
   18     0     0     0  DL      -       0xffffffff82570908  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff8302c828  [sctp_iterator]
   16     0     0     0  DL      pftm    0xffffffff82d783c0  [pf purge]
   15     0     0     0  DL      -       0xffffffff828280dc  [soaiod4]
    9     0     0     0  DL      -       0xffffffff828280dc  [soaiod3]
    8     0     0     0  DL      -       0xffffffff828280dc  [soaiod2]
    7     0     0     0  DL      -       0xffffffff828280dc  [soaiod1]
    6     0     0     0  DL      (threaded)                  [cam]
100044                   D       -       0xffffffff82447dc0  [doneq0]
100045                   D       -       0xffffffff82447d40  [async]
100078                   D       -       0xffffffff82447c10  [scanner]
   14     0     0     0  DL      seqstat 0xfffff80004dcbc88  [sequencer 00]
    5     0     0     0  DL      crypto_ 0xfffff80004d99d80  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffff80004d99d30  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff82844220  [crypto]
   13     0     0     0  DL      (threaded)                  [geom]
100035                   D       -       0xffffffff8271bda0  [g_event]
100036                   D       -       0xffffffff8271bda8  [g_up]
100037                   D       -       0xffffffff8271bdb0  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100028                   D       -       0xfffff80004c39d00  [thr_0]
100029                   D       -       0xfffff80004c39d80  [thr_1]
   12     0     0     0  WL      (threaded)                  [intr]
100012                   I                                   [swi5: fast taskq]
100015                   I                                   [swi6: task queue]
100017                   I                                   [swi6: Giant taskq]
100030                   I                                   [swi4: clock (0)]
100031                   I                                   [swi4: clock (1)]
100032                   I                                   [swi1: netisr 0]
100033                   I                                   [swi3: vm]
100046                   I                                   [irq24: virtio_pci0]
100047                   I                                   [irq25: virtio_pci0]
100048                   I                                   [irq26: virtio_pci0]
100049                   I                                   [irq27: virtio_pci0]
100050                   I                                   [irq28: virtio_pci1]
100051                   I                                   [irq29: virtio_pci1]
100052                   I                                   [irq30: virtio_pci1]
100053                   I                                   [irq31: virtio_pci1]
100054                   I                                   [irq32: virtio_pci1]
100059                   I                                   [irq10: virtio_pci2]
100061                   I                                   [irq1: atkbd0]
100062                   I                                   [irq12: psm0]
100063                   I                                   [swi0: uart uart++]
100071                   I                                   [swi1: pf send]
100084                   I                                   [swi1: hpts]
100085                   I                                   [swi1: hpts]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffff80004bc7538  [init]
   10     0     0     0  DL      audit_w 0xffffffff82844730  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff8271c330  [swapper]
100005                   D       -       0xfffff80004c63d00  [if_config_tqg_0]
100006                   D       -       0xfffff80004c63900  [softirq_0]
100007                   D       -       0xfffff80004c63500  [softirq_1]
100008                   D       -       0xfffff80004c63100  [if_io_tqg_0]
100009                   D       -       0xfffff80004c61d00  [if_io_tqg_1]
100010                   D       -       0xfffff80004c5fd00  [in6m_free taskq]
100011                   D       -       0xfffff80004c5f900  [aiod_kick taskq]
100013                   D       -       0xfffff80004c5f100  [kqueue_ctx taskq]
100014                   D       -       0xfffff80004c58d00  [pci_hp taskq]
100016                   D       -       0xfffff80004c58500  [inm_free taskq]
100018                   D       -       0xfffff80004c53d00  [linuxkpi_irq_wq]
100019                   D       -       0xfffff80004c53900  [thread taskq]
100020                   D       -       0xfffff80004c53500  [linuxkpi_short_wq_0]
100021                   D       -       0xfffff80004c53500  [linuxkpi_short_wq_1]
100022                   D       -       0xfffff80004c53500  [linuxkpi_short_wq_2]
100023                   D       -       0xfffff80004c53500  [linuxkpi_short_wq_3]
100024                   D       -       0xfffff80004c53100  [linuxkpi_long_wq_0]
100025                   D       -       0xfffff80004c53100  [linuxkpi_long_wq_1]
100026                   D       -       0xfffff80004c53100  [linuxkpi_long_wq_2]
100027                   D       -       0xfffff80004c53100  [linuxkpi_long_wq_3]
100034                   D       -       0xfffff80004c39900  [firmware taskq]
100038                   D       -       0xfffff80004c39500  [crypto_0]
100039                   D       -       0xfffff80004c39500  [crypto_1]
100055                   D       -       0xfffff800153dc900  [vtnet0 rxq 0]
100056                   D       -       0xfffff800153dc500  [vtnet0 txq 0]
100057                   D       -       0xfffff800153dc100  [vtnet0 rxq 1]
100058                   D       -       0xfffff800153c6d00  [vtnet0 txq 1]
100060                   D       vtbslp  0xfffff80015429500  [virtio_balloon]
100064                   D       -       0xfffff800153c6900  [mca taskq]
100066                   D       -       0xffffffff81e20400  [deadlkres]
100074                   D       -       0xfffff80015a19900  [acpi_task_0]
100075                   D       -       0xfffff80015a19900  [acpi_task_1]
100076                   D       -       0xfffff80015a19900  [acpi_task_2]
100077                   D       -       0xfffff80004c39100  [CAM taskq]
db> show all locks
Process 781 (sshd) thread 0xfffffe0094f8cc80 (100117)
exclusive sleep mutex so_snd (so_snd) r = 0 (0xfffff8002624c260) locked @ /syzkaller/managers/main/kernel/sys/netinet/tcp_output.c:355
exclusive rw tcpinp (tcpinp) r = 0 (0xfffff80026217d78) locked @ /syzkaller/managers/main/kernel/sys/netinet/tcp_usrreq.c:989
exclusive sx so_snd_sx (so_snd_sx) r = 0 (0xfffff8002624c280) locked @ /syzkaller/managers/main/kernel/sys/kern/uipc_sockbuf.c:467
db> show malloc
              Type        InUse        MemUse     Requests
         sysctloid        34288        12858K        34355
           pf_hash            5        11560K            5
            devbuf         4216         6982K         4241
          tcp_hpts            5         3219K            5
              kobj          328         2624K          488
             vtbuf           24         2064K           46
            newblk          545         1304K          602
          vfscache            3         1035K            3
            acpica         1674          649K        55230
               pcb           26          613K          134
          inodedep           44          563K           71
           callout            2          528K            2
         ufs_quota            1          520K            1
          vfs_hash            1          520K            1
              intr            4          480K            4
           subproc          102          431K          898
               bus          990          378K         3499
            linker          348          270K          397
            DEVFS1          103          206K          112
            module          512          192K          512
         vnet_data            1          176K            1
           tidhash            3          164K            3
           pagedep           14          143K           18
           kdtrace          167          138K          963
        tfo_ccache            1          136K            1
               sem            4          120K            4
              umtx          242          106K          242
               UMA          270          102K          270
     audit_evclass          236           89K          294
          mtx_pool            2           80K            2
          syncache            1           76K            1
              temp           18           71K         1613
               msg            4           68K            4
               BPF           10           68K           10
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            DEVFS3          122           61K          132
        gtaskqueue           18           57K           18
              vmem            3           56K            4
        DEVFS_RULE           56           54K           56
              kenv           95           52K           95
      eventhandler          133           50K          133
           ithread           99           43K           99
              rman           84           42K          425
            ifaddr           30           40K           32
            KTRACE          100           38K          100
         taskqueue           60           36K           60
              proc            3           34K            3
         ufs_mount            5           34K            6
            bus-sc           33           34K         1710
          routetbl           50           34K          176
           devstat            4           33K            4
         hostcache            1           32K            1
               tty           16           32K           16
               shm            1           32K            1
              GEOM           60           29K          489
            kbdmux            6           28K            6
              cred           23           23K          234
         CAM queue            5           21K         1528
         pfs_nodes           20           20K           20
            kqueue           47           18K          845
           pwddesc           47           18K          843
              UART           12           18K           12
            plimit           17           17K          322
              ksem            1           16K            1
               rpc            2           16K            2
         bmsafemap            1           16K           41
             shmfd            1           16K            1
       pfs_vncache            1           16K            1
       ether_multi           40           15K           50
         proc-args           39           15K          488
       ufs_dirhash           24           14K           24
            sglist            5           13K            5
               MCA           32           12K           32
           CAM DEV            3           12K          510
                vt           11           11K           11
         in6_multi           25           11K           25
           acpisem           28           11K           28
           CAM XPT           22           11K          543
            Unitno           27           11K           39
           session           20           10K           31
            diradd           25           10K           36
           lltable           11            9K           11
           uidinfo            3            9K            8
            dirrem           17            9K           28
             ifnet            3            9K            3
           memdesc            1            8K            1
         ipsec-saq            2            8K            2
             evdev            4            8K            4
          filedesc            1            8K            1
           acpidev           20            8K           20
             selfd           20            8K        12720
             hhook           15            8K           17
             mount           16            7K           90
          pf_ifnet            5            6K            6
       fpukern_ctx            3            6K            3
             lockf           15            6K           22
          terminal           11            6K           11
       inpcbpolicy           13            5K          194
       ipsecpolicy            2            5K            2
 encap_export_host           12            5K           12
             clone            9            5K            9
        local_apic            1            4K            1
           io_apic            1            4K            1
            sahead            1            4K            1
          secasvar            1            4K            1
          pci_link           10            4K           10
               msi            9            4K            9
             DEVFS            9            4K           10
               osd            8            4K           76
             ipsec            3            3K            3
             nhops            6            3K            6
          nexusdev            7            3K            7
            ip6opt            6            3K          117
            feeder            7            3K            7
            select            7            3K           29
         toponodes            6            3K            6
            prison            6            3K            6
            isadev            6            3K            6
           softdep            1            2K            1
       vnodemarker            2            2K           10
      NFSD session            1            2K            1
          sctp_ifa            5            2K            6
             linux            5            2K            6
        CAM periph            4            2K          271
            soname            5            2K         3288
            crypto            4            2K            4
            ip6ndp            4            2K            5
            DEVFSP            4            2K            9
         newdirblk            4            2K            8
             mkdir            4            2K           16
          indirdep            3            2K            3
              pfil            4            2K            4
          CAM path            4            2K         1034
          filecaps            4            2K           66
           tcpfunc            3            2K            3
               tun            3            2K            3
        loginclass            3            2K            7
          in_multi            2            1K            4
    chacha20random            1            1K            1
            vnodes            1            1K            1
           CAM SIM            2            1K            2
              ktls            1            1K            1
              cdev            2            1K            2
        aesni_data            2            1K            2
          sctp_ifn            2            1K            6
              cpus            2            1K            2
          atkbddev            2            1K            2
     CAM dev queue            2            1K            2
             xform            2            1K           49
               mld            2            1K            2
              igmp            2            1K            2
           entropy            2            1K           35
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
          procdesc            1            1K            6
          pmchooks            1            1K            1
          sctp_vrf            1            1K            1
            apmdev            1            1K            1
 CAM I/O Scheduler            1            1K            1
          freework            1            1K           26
    vnet_data_free            1            1K            1
              vnet            1            1K            1
           Per-cpu            1            1K            1
          p1003.1b            1            1K            1
          acpiintr            1            1K            1
               pmc            1            1K            1
          chd data            0            0K            0
        vegas data            0            0K            0
            mqdata            0            0K            0
        sctp_mcore            0            0K            0
        sctp_socko            0            0K            0
         sctp_iter            0            0K            3
         sctp_mvrf            0            0K            0
         sctp_timw            0            0K            0
         sctp_cpal            0            0K            0
         sctp_cmsg            0            0K            0
         sctp_stre            0            0K            0
         sctp_athi            0            0K            0
         sctp_athm            0            0K            0
         sctp_atky            0            0K            0
         sctp_atcl            0            0K            0
         sctp_a_it            0            0K            3
         sctp_aadr            0            0K            0
         sctp_stro            0            0K            0
         sctp_stri            0            0K            0
          sctp_map            0            0K            0
        cubic data            0            0K            0
         htcp data            0            0K            0
        dctcp data            0            0K            0
          cdg data            0            0K            0
            tcp_do            0            0K            0
           tcp_fsb            0            0K            0
          pf_table            0            0K            0
           pf_rule            0            0K            0
           pf_altq            0            0K            0
           pf_osfp            0            0K            0
           pf_temp            0            0K            0
       NFSD V4lock            0            0K            0
        madt_table            0            0K            2
          smartpqi            0            0K            0
      NFSD V4state            0            0K            0
     NFSD srvcache            0            0K            0
       msdosfs_fat            0            0K            0
     msdosfs_mount            0            0K            0
      msdosfs_node            0            0K            0
              iavf            0            0K            0
               ixl            0            0K            0
            DEVFS4            0            0K            0
            DEVFS2            0            0K            0
            gntdev            0            0K            0
       privcmd_dev            0            0K            0
        ice-resmgr            0            0K            0
         ice-osdep            0            0K            0
               ice            0            0K            0
             axgbe            0            0K            0
        evtchn_dev            0            0K            0
          xenstore            0            0K            0
         ciss_data            0            0K            0
         BACKLIGHT            0            0K            0
               xnb            0            0K            0
              xbbd            0            0K            0
               xbd            0            0K            0
           Balloon            0            0K            0
          sysmouse            0            0K            0
            vtfont            0            0K            0
          xen_intr            0            0K            0
           xen_hvm            0            0K            0
         legacydrv            0            0K            0
            qpidrv            0            0K            0
           ath_hal            0            0K            0
            athdev            0            0K            0
      dmar_idpgtbl            0            0K            0
          dmar_dom            0            0K            0
          dmar_ctx            0            0K            0
           ata_pci            0            0K            0
           ata_dma            0            0K            0
       ata_generic            0            0K            0
              isci            0            0K            0
      iommu_dmamap            0            0K            0
               amr            0            0K            0
     hyperv_socket            0            0K            0
           bxe_ilt            0            0K            0
            xenbus            0            0K            0
            pvscsi            0            0K            0
           scsi_da            0            0K           69
     vm_fictitious            0            0K            0
            ata_da            0            0K            0
           scsi_ch            0            0K            0
           scsi_cd            0            0K            0
       AHCI driver            0            0K            0
            USBdev            0            0K            0
               USB            0            0K            0
               agp            0            0K            0
           nvme_da            0            0K            0
           UMAHash            0            0K            0
           acpipwr            0            0K            0
         acpi_perf            0            0K            0
         vm_pgdata            0            0K            0
           jblocks            0            0K            0
          savedino            0            0K           16
          sentinel            0            0K            0
            jfsync            0            0K            0
            jtrunc            0            0K            0
             sbdep            0            0K            3
           jsegdep            0            0K            0
              jseg            0            0K            0
         jfreefrag            0            0K            0
          jfreeblk            0            0K            0
           jnewblk            0            0K            0
            jmvref            0            0K            0
           jremref            0            0K            0
           jaddref            0            0K            0
           freedep            0            0K            0
          freefile            0            0K            9
          freeblks            0            0K           25
          freefrag            0            0K            7
        allocindir            0            0K            0
       allocdirect            0            0K            0
          ufs_trim            0            0K            0
           mactemp            0            0K            0
     audit_trigger            0            0K            0
 audit_pipe_presel            0            0K            0
     audit_pipeent            0            0K            0
        audit_pipe            0            0K            0
      audit_evname            0            0K            0
         audit_bsm            0            0K            0
      audit_gidset            0            0K            0
        audit_text            0            0K            0
        audit_path            0            0K            0
        audit_data            0            0K            0
        audit_cred            0            0K            0
            twsbuf            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
         MLX5E_TLS            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
            MLX5EN            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
          MLX5DUMP            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
          seq_file            0            0K            0
             radix            0            0K            0
               idr            0            0K            0
            lkpifw            0            0K            0
               NLM            0            0K            0
    ipsec-spdcache            0            0K            0
         ipsec-reg            0            0K            0
        ipsec-misc            0            0K            0
      ipsecrequest            0            0K            0
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       in6_mfilter            0            0K            0
             frag6            0            0K            0
            tcplog            0            0K            0
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               LRO            0            0K            0
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       ip_moptions            0            0K            0
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              ipid            0            0K            0
         80211scan            0            0K            0
      80211ratectl            0            0K            0
        80211power            0            0K            0
       80211nodeie            0            0K            0
         80211node            0            0K            0
      80211mesh_gt            0            0K            0
      80211mesh_rt            0            0K            0
         80211perr            0            0K            0
         80211prep            0            0K            0
         80211preq            0            0K            0
          80211dfs            0            0K            0
       80211crypto            0            0K            0
          80211vap            0            0K            0
             iflib            0            0K            0
              vlan            0            0K            0
               gif            0            0K            0
           ifdescr            0            0K            0
              zlib            0            0K            0
           fadvise            0            0K            0
           VN POLL            0            0K            0
      twa_commands            0            0K            0
            statfs            0            0K          195
     namei_tracker            0            0K            0
       export_host            0            0K            0
        cl_savebuf            0            0K            6
       tcp_log_dev            0            0K            0
      midi buffers            0            0K            0
             mixer            0            0K            0
              ac97            0            0K            0
             hdacc            0            0K            0
              hdac            0            0K            0
              hdaa            0            0K            0
         acpicmbat            0            0K            0
       SIIS driver            0            0K            0
           CAM CCB            0            0K         1786
               PUC            0            0K            0
          ppbusdev            0            0K            0
agtiapi_MemAlloc malloc            0            0K            0
    osti_cacheable            0            0K            0
          tempbuff            0            0K            0
            biobuf            0            0K            0
              aios            0            0K            0
               lio            0            0K            0
               acl            0            0K            0
          tempbuff            0            0K            0
          mbuf_tag            0            0K           27
ag_tgt_map_t malloc            0            0K            0
ag_slr_map_t malloc            0            0K            0
lDevFlags * malloc            0            0K            0
tiDeviceHandle_t * malloc            0            0K            0
ag_portal_data_t malloc            0            0K            0
ag_device_t malloc            0            0K            0
     STLock malloc            0            0K            0
          CCB List            0            0K            0
            sr_iov            0            0K            0
               OCS            0            0K            0
               OCS            0            0K            0
              nvme            0            0K            0
               nvd            0            0K            0
            netmap            0            0K            0
            mwldev            0            0K            0
        MVS driver            0            0K            0
     CAM ccb queue            0            0K            0
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          mps_user            0            0K            0
              accf            0            0K            0
               pts            0            0K            0
               iov            0            0K        13508
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           Witness            0            0K            0
             stack            0            0K            0
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               mpr            0            0K            0
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              SWAP            0            0K            0
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       aacraid_buf            0            0K            0
                ix            0            0K            0
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             cache            0            0K            0
            iirbuf            0            0K            0
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     tr_raid1_data            0            0K            0
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       md_sii_data            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     562       13285       0     254   36380672        0
        malloc-384    384   34654      66       36608       0      30   13332480        0
       malloc-1024   1024    4143      13        4362       0      16    4255744        0
       malloc-8192   8192     329       2         489       0       1    2711552        0
              pbuf   2624       0     989           0       0       2    2595136        0
              mbuf    256    8579     571       15204       0     254    2342400        0
          BUF TRIE    144     170   13298         447       0      62    1939392        0
       UMA Slabs 0    112   11057      28       11057       0     126    1241520        0
        malloc-384    384    1908      42       72277       0      30     748800        0
         FFS inode   1160     499      19         509       0       8     600880        0
        malloc-384    384    1254      26        3723       0      30     491520        0
       malloc-8192   8192      56       3         852       0       1     483328        0
        malloc-384    384     996      14        3334       0      30     387840        0
            lkpimm    160       1    2324           1       0      62     372000        0
          lkpicurr    160       2    2323           2       0      62     372000        0
        malloc-512    512     618      46         801       0      30     339968        0
        RADIX NODE    144    2132     189       21017       0      62     334224        0
      malloc-65536  65536       4       0           4       0       1     262144        0
         VM OBJECT    264     898      62       13165       0      30     253440        0
             VNODE    448     529      20         541       0      30     245952        0
        malloc-384    384     589      21         733       0      30     234240        0
      malloc-16384  16384      11       3         273       0       1     229376        0
            DEVCTL   1024       0     216         116       0       0     221184        0
       malloc-2048   2048     103       5         112       0       8     221184        0
            THREAD   1808     119       2         119       0       8     218768        0
      malloc-65536  65536       1       2         178       0       1     196608        0
      malloc-16384  16384      10       2          14       0       1     196608        0
         UMA Zones    768     242       2         242       0      16     187392        0
      malloc-32768  32768       3       2         148       0       1     163840        0
       malloc-4096   4096       2      37        1789       0       2     159744        0
       malloc-1024   1024     153       3         874       0      16     159744        0
        256 Bucket   2048      56      16        9682       0       8     147456        0
         vmem btag     56    2333     103        2333       0     254     136416        0
        malloc-512    512     238      26         949       0      30     135168        0
      malloc-65536  65536       2       0           2       0       1     131072        0
       malloc-8192   8192      14       2         134       0       1     131072        0
       FFS2 dinode    256     499      11         508       0      62     130560        0
          ksiginfo    112      38    1006          54       0     126     116928        0
         MAP ENTRY     96     847     371       38671       0     126     116928        0
       malloc-1024   1024      90      18         149       0      16     110592        0
       malloc-1024   1024      96       8         687       0      16     106496        0
       S VFS Cache    104     966      48        1005       0     126     105456        0
      malloc-16384  16384       6       0           6       0       1      98304        0
        malloc-512    512     169       7         194       0      30      90112        0
          UMA Kegs    384     227       6         227       0      30      89472        0
           VMSPACE   2544      24       9         821       0       4      83952        0
             g_bio    408       0     180        4600       0      30      73440        0
              PROC   1336      46       8         842       0       8      72144        0
         filedesc0   1072      47      16         843       0       8      67536        0
      mbuf_cluster   2048      30       2          30       0     254      65536        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       2       0           2       0       1      65536        0
        malloc-512    512      72      56         392       0      30      65536        0
        malloc-384    384      87      73       12862       0      30      61440        0
       malloc-1024   1024      53       3          57       0      16      57344        0
       malloc-4096   4096       5       8         515       0       2      53248        0
         32 Bucket    256      66     129       10064       0      62      49920        0
      malloc-16384  16384       3       0           3       0       1      49152        0
      malloc-16384  16384       1       2           4       0       1      49152        0
       malloc-8192   8192       4       2         534       0       1      49152        0
       malloc-2048   2048      18       6          22       0       8      49152        0
       malloc-2048   2048       8      16         516       0       8      49152        0
        malloc-384    384      74      46         626       0      30      46080        0
       malloc-4096   4096       6       5          74       0       2      45056        0
       malloc-2048   2048       9      13        1185       0       8      45056        0
            clpbuf   2624       0      16          20       0      16      41984        0
           DIRHASH   1024      34       2          34       0      16      36864        0
             NAMEI   1024       0      36       11991       0      16      36864        0
            pcpu-8      8    4210     398        4238       0     254      36864        0
        128 Bucket   1024      22      13         145       0      16      35840        0
      malloc-16384  16384       2       0           2       0       1      32768        0
       malloc-4096   4096       6       2          22       0       2      32768        0
       malloc-4096   4096       8       0         199       0       2      32768        0
       malloc-1024   1024      30       2          31       0      16      32768        0
           pcpu-64     64     486      26         486       0     254      32768        0
       malloc-4096   4096       7       0           7       0       2      28672        0
         64 Bucket    512      41      15        1358       0      30      28672        0
            socket    944      19       9        1310       0     254      26432        0
              pipe    744       7      28         284       0      16      26040        0
       malloc-8192   8192       1       2         197       0       1      24576        0
       malloc-8192   8192       3       0           3       0       1      24576        0
       malloc-4096   4096       2       4         268       0       2      24576        0
        malloc-512    512      18      30         161       0      30      24576        0
            ttyinq    160     135      15         300       0      62      24000        0
           ttyoutq    256      72      18         160       0      62      23040        0
       malloc-2048   2048       9       1           9       0       8      20480        0
       malloc-2048   2048       9       1           9       0       8      20480        0
       malloc-1024   1024       2      18          21       0      16      20480        0
        malloc-512    512      12      28        1220       0      30      20480        0
        malloc-512    512      26      14         301       0      30      20480        0
          2 Bucket     32      79     551        1262       0     254      20160        0
         TURNSTILE    136     122      25         122       0      62      19992        0
       Mountpoints   2752       2       5           2       0       4      19264        0
        malloc-384    384      29      21         160       0      30      19200        0
      malloc-16384  16384       1       0           1       0       1      16384        0
      malloc-16384  16384       1       0           1       0       1      16384        0
             tcpcb   1064       4      10          64       0     254      14896        0
        SLEEPQUEUE     88     122      38         122       0     126      14080        0
        malloc-512    512      13      11          19       0      30      12288        0
    ertt_txseginfo     40       0     303         260       0     254      12120        0
             Files     80      72      78        6557       0     126      12000        0
          8 Bucket     80      35     115         379       0     126      12000        0
         tcp_inpcb    488       6      18          64       0     254      11712        0
         udp_inpcb    488       6      18         126       0     254      11712        0
              kenv    258      15      30        1044       0      30      11610        0
       malloc-2048   2048       0       4           4       0       8       8192        0
       malloc-2048   2048       4       0           4       0       8       8192        0
       malloc-1024   1024       0       8          19       0      16       8192        0
           rtentry    176      13      33          17       0      62       8096        0
              PGRP     88      20      72          31       0     126       8096        0
          rl_entry     40      31     171          31       0     254       8080        0
             udpcb     32       6     246         126       0     254       8064        0
              ertt     72       4     108          64       0     126       8064        0
               PWD     32      10     242         100       0     254       8064        0
         16 Bucket    144      34      22        1303       0      62       8064        0
          4 Bucket     48       5     163          64       0     254       8064        0
      vtnet_tx_hdr     24       0     334         977       0     254       8016        0
             ripcb    488       1      15           4       0     254       7808        0
     routing nhops    256      10      20          17       0      62       7680        0
             unpcb    256       7      23        1099       0     254       7680        0
       mbuf_packet    256       0      30          93       0     254       7680        0
     FPU_save_area    832       1       8           1       0      16       7488        0
            cpuset    104       7      55           7       0     126       6448        0
 epoch_record pcpu    256       4      12           4       0      62       4096        0
           pcpu-16     16       7     249           7       0     254       4096        0
        sctp_laddr     48       0      84           4       0     254       4032        0
         hostcache     64       1      62           1       0     254       4032        0
          syncache    168       0      24           5       0     254       4032        0
             KNOTE    160       0      25           8       0      62       4000        0
       UMA Slabs 1    176       8      14           8       0      62       3872        0
            mqnode    416       3       6           3       0      30       3744        0
        KMAP ENTRY     96      12      27          12       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
   cdg_qdiffsample     16       0       0           0       0     254          0        0
   sctp_asconf_ack     48       0       0           0       0     254          0        0
       sctp_asconf     40       0       0           0       0     254          0        0
sctp_stream_msg_out    112       0       0           0       0     254          0        0
        sctp_readq    152       0       0           0       0     254          0        0
        sctp_chunk    152       0       0           0       0     254          0        0
        sctp_raddr    736       0       0           0       0     254          0        0
         sctp_asoc   2288       0       0           0       0     254          0        0
           sctp_ep   1280       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    296       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    488       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    584       0       0           0       0      16          0        0
        mqnotifier    216       0       0           0       0      62          0        0
            mvdata     64       0       0           0       0     254          0        0
            mqueue    248       0       0           0       0      62          0        0
        TMPFS node    224       0       0           0       0      62          0        0
     LTS VFS Cache    360       0       0           0       0      30          0        0
       L VFS Cache    320       0       0           0       0      30          0        0
     STS VFS Cache    144       0       0           0       0      62          0        0
           cryptop    280       0       0           0       0      30          0        0
  linux_dma_object     24       0       0           0       0     254          0        0
  linux_dma_pctrie    144       0       0           0       0      62          0        0
   IOMMU_MAP_ENTRY    120       0       0           0       0     126          0        0
      ktls_session    192       0       0           0       0      62          0        0
    mbuf_jumbo_16k  16384       0       0           0       0     254          0        0
     mbuf_jumbo_9k   9216       0       0           0       0     254          0        0
      audit_record   1280       0       0           0       0       8          0        0
         domainset     40       0       0           0       0     254          0        0
        MAC labels     40       0       0           0       0     254          0        0
            vnpbuf   2624       0       0           0       0      64          0        0
            mdpbuf   2624       0       0           0       0       3          0        0
           nfspbuf   2624       0       0           0       0      16          0        0
            swwbuf   2624       0       0           0       0       8          0        0
            swrbuf   2624       0       0           0       0      16          0        0
          umtx_shm     88       0       0           0       0     126          0        0
           umtx pi     96       0       0           0       0     126          0        0
rangeset pctrie nodes    144       0       0           0       0      62          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
       malloc-8192   8192       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-256    256       0       0           0       0      62          0        0
        malloc-256    256       0       0           0       0      62          0        0
        malloc-256    256       0       0           0       0      62          0        0
        malloc-256    256       0       0           0       0      62          0        0
        malloc-256    256       0       0           0       0      62          0        0
        malloc-256    256       0       0           0       0      62          0        0
        malloc-256    256       0       0           0       0      62          0        0
        malloc-256    256       0       0           0       0      62          0        0
        malloc-128    128       0       0           0       0     126          0        0
        malloc-128    128       0       0           0       0     126          0        0
        malloc-128    128       0       0           0       0     126          0        0
        malloc-128    128       0       0           0       0     126          0        0
        malloc-128    128       0       0           0       0     126          0        0
        malloc-128    128       0       0           0       0     126          0        0
        malloc-128    128       0       0           0       0     126          0        0
        malloc-128    128       0       0           0       0     126          0        0
         malloc-64     64       0       0           0       0     254          0        0
         malloc-64     64       0       0           0       0     254          0        0
         malloc-64     64       0       0           0       0     254          0        0
         malloc-64     64       0       0           0       0     254          0        0
         malloc-64     64       0       0           0       0     254          0        0
         malloc-64     64       0       0           0       0     254          0        0
         malloc-64     64       0       0           0       0     254          0        0
         malloc-64     64       0       0           0       0     254          0        0
         malloc-32     32       0       0           0       0     254          0        0
         malloc-32     32       0       0           0       0     254          0        0
         malloc-32     32       0       0           0       0     254          0        0
         malloc-32     32       0       0           0       0     254          0        0
         malloc-32     32       0       0           0       0     254          0        0
         malloc-32     32       0       0           0       0     254          0        0
         malloc-32     32       0       0           0       0     254          0        0
         malloc-32     32       0       0           0       0     254          0        0
         malloc-16     16       0       0           0       0     254          0        0
         malloc-16     16       0       0           0       0     254          0        0
         malloc-16     16       0       0           0       0     254          0        0
         malloc-16     16       0       0           0       0     254          0        0
         malloc-16     16       0       0           0       0     254          0        0
         malloc-16     16       0       0           0       0     254          0        0
         malloc-16     16       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 (6):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-freebsd-main 2021/05/18 01:28 freebsd-src 4224dbf4c7c4 a343ba6b log report syz C panic: Memory modified after free ADDR(256) val=ADDR @ ADDR
ci-freebsd-main 2021/05/16 19:04 freebsd-src 91f251b2ab3a f54a5c09 log report syz panic: Memory modified after free ADDR(256) val=ADDR @ ADDR
ci-freebsd-main 2021/05/17 04:57 freebsd-src 75b5caa08ef2 f54a5c09 log report panic: Memory modified after free ADDR(256) val=ADDR @ ADDR
ci-freebsd-main 2021/05/16 18:40 freebsd-src 91f251b2ab3a f54a5c09 log report panic: Memory modified after free ADDR(256) val=ADDR @ ADDR
ci-freebsd-i386 2021/05/21 12:47 freebsd-src d7751071bc41 3c7fef33 log report panic: Memory modified after free ADDR(256) val=ADDR @ ADDR
ci-freebsd-i386 2021/05/01 14:48 freebsd-src a6ca7519f89c 77e2b668 log report panic: Memory modified after free ADDR(256) val=ADDR @ ADDR
* Struck through repros no longer work on HEAD.