syzbot


panic: ASan: Invalid access, 8-byte read in itimer_proc_continue

Status: fixed on 2021/09/01 04:22
Reported-by: syzbot+929be2f32503bbc3844f@syzkaller.appspotmail.com
Fix commit: 3138392a46a4 itimer: Serialize access to the p_itimers array
First crash: 561d, last: 561d

Sample crash report:
panic: ASan: Invalid access, 8-byte read at 0xfffffe00a73f4638, UMAUseAfterFree(fd)
cpuid = 0
time = 1627162509
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe009bc9d2d0
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe009bc9d430
vpanic() at vpanic+0x2c5/frame 0xfffffe009bc9d510
panic() at panic+0xb5/frame 0xfffffe009bc9d5d0
__asan_load8_noabort() at __asan_load8_noabort+0x376/frame 0xfffffe009bc9d690
itimer_proc_continue() at itimer_proc_continue+0x314/frame 0xfffffe009bc9d750
tdsendsignal() at tdsendsignal+0xe14/frame 0xfffffe009bc9d8b0
kern_kill() at kern_kill+0x323/frame 0xfffffe009bc9d9f0
amd64_syscall() at amd64_syscall+0x425/frame 0xfffffe009bc9dbf0
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe009bc9dbf0
--- syscall (37, FreeBSD ELF64, sys_kill), rip = 0x2e987a, rsp = 0x7fffffffe488, rbp = 0x7fffffffe510 ---
KDB: enter: panic
[ thread pid 784 tid 100116 ]
Stopped at      kdb_enter+0x6b: movq    $0,0x28ee95a(%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         0xc9bd18aa43fb8d0f
rdx                        0x1
rbx                          0
rsp         0xfffffe009bc9d410
rbp         0xfffffe009bc9d430
rsi                          0
rdi         0xffffffff817a8739  vprintf+0x319
r8                         0x3
r9          0xfffffe009bc9cf48
r10                          0
r11         0xfffffe009e46d510
r12         0xfffffe009e46d000
r13         0xfffffe009bc9d401
r14         0xffffffff82c58980  .str.18
r15         0xffffffff82c58980  .str.18
rip         0xffffffff8179c15b  kdb_enter+0x6b
rflags                    0x46
kdb_enter+0x6b: movq    $0,0x28ee95a(%rip)
db> show proc
Process 784 (syz-executor.0) at 0xfffffe009e4b6000:
 state: NORMAL
 uid: 0  gids: 0, 0, 5
 parent: pid 782 at 0xfffffe009e4b6538
 ABI: FreeBSD ELF64
 flag: 0x10004000  flag2: 0
 arguments: /root/syz-executor.0
 reaper: 0xfffffe0053d4b538 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffffe009e4283e0
   (map 0xfffffe009e4283e0)
   (map.pmap 0xfffffe009e4284a0)
   (pmap 0xfffffe009e428500)
 threads: 1
100116                   Run     CPU 0                       syz-executor.0
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
18242   784   784     0  LE     *kernel  0xfffffe005873ecc0  syz-executor.0
 5362     1  5362    65  Ss      select  0xfffffe00573f2140  dhclient
 5141     1  5141     0  Ss      select  0xfffffe00a2b3dd40  dhclient
 5138     1  5138     0  Ss      select  0xfffffe00a2b3dcc0  dhclient
 5064     1  5064    65  Ss      select  0xfffffe00573f2ac0  dhclient
 4277     1  4277     0  Ss      select  0xfffffe0056b74cc0  dhclient
 4196     1  4196     0  Ss      select  0xfffffe0056b74bc0  dhclient
 4182     1  4182    65  Ss      select  0xfffffe00573f29c0  dhclient
 2956     1  2956     0  Ss      select  0xfffffe00573f2540  dhclient
 2942     1  2942     0  Ss      select  0xfffffe0056b747c0  dhclient
 2858     1  2858    65  Ss      select  0xfffffe00573f22c0  dhclient
 1372     1  1372     0  Ss      select  0xfffffe0056b763c0  dhclient
 1334     1  1334     0  Ss      select  0xfffffe0056b749c0  dhclient
  787   782   787     0  Ss      piperd  0xfffffe009e9c62e8  syz-executor.3
  786   782   786     0  Ss      piperd  0xfffffe0058886000  syz-executor.2
  785   782   785     0  Ss      piperd  0xfffffe009e9c6ba0  syz-executor.1
  784   782   784     0  Rs      CPU 0                       syz-executor.0
  782   780   780     0  S       (threaded)                  syz-fuzzer
100115                   S       uwait   0xfffffe009e3af180  syz-fuzzer
100120                   S       uwait   0xfffffe00584b4c80  syz-fuzzer
100121                   S       uwait   0xfffffe00584b4d80  syz-fuzzer
100122                   S       uwait   0xfffffe009e463600  syz-fuzzer
100123                   S       kqread  0xfffffe00589e1800  syz-fuzzer
100124                   S       uwait   0xfffffe009e463800  syz-fuzzer
100125                   S       uwait   0xfffffe009e463300  syz-fuzzer
100126                   S       uwait   0xfffffe009e463400  syz-fuzzer
100127                   S       uwait   0xfffffe009e463500  syz-fuzzer
  780   778   780     0  Ss      pause   0xfffffe0058867b20  csh
  778   694   778     0  Ss      select  0xfffffe0056b74e40  sshd
  760     1   760     0  Ss+     ttyin   0xfffffe0056fdecb0  getty
  759     1   759     0  Ss+     ttyin   0xfffffe00583ed0b0  getty
  758     1   758     0  Ss+     ttyin   0xfffffe00583ed4b0  getty
  757     1   757     0  Ss+     ttyin   0xfffffe00583ed8b0  getty
  756     1   756     0  Ss+     ttyin   0xfffffe00583edcb0  getty
  755     1   755     0  Ss+     ttyin   0xfffffe00583930b0  getty
  754     1   754     0  Ss+     ttyin   0xfffffe00583934b0  getty
  753     1   753     0  Ss+     ttyin   0xfffffe00583938b0  getty
  752     1   752     0  Ss+     ttyin   0xfffffe0058393cb0  getty
  698     1   698     0  Ss      nanslp  0xffffffff84057980  cron
  694     1   694     0  Ss      select  0xfffffe00573f2bc0  sshd
  507     1   507     0  Ss      select  0xfffffe0056b74f40  syslogd
  436     1   436     0  Ss      select  0xfffffe00573f2cc0  devd
  435     1   435    65  Ss      select  0xfffffe00573f2d40  dhclient
  350     1   350     0  Ss      select  0xfffffe0056b730c0  dhclient
  347     1   347     0  Ss      select  0xfffffe00573f2e40  dhclient
   23     0     0     0  DL      syncer  0xffffffff8417dac0  [syncer]
   22     0     0     0  DL      vlruwt  0xfffffe0058736a70  [vnlru]
   21     0     0     0  LL      (threaded)                  [bufdaemon]
100083                   D       qsleep  0xffffffff8417b9c0  [bufdaemon]
100086                   D       -       0xffffffff83411f80  [bufspacedaemon-0]
100096                   L      *SUrw    0xfffffe00a726cf00  [/ worker]
   20     0     0     0  DL      psleep  0xffffffff841b3d80  [vmdaemon]
   19     0     0     0  DL      (threaded)                  [pagedaemon]
100081                   D       psleep  0xffffffff841a78b8  [dom0]
100087                   D       launds  0xffffffff841a78c4  [laundry: dom0]
100088                   D       umarcl  0xffffffff81e92780  [uma]
   18     0     0     0  DL      -       0xffffffff83e0eae0  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff84d7a460  [sctp_iterator]
   16     0     0     0  DL      pftm    0xffffffff84769e20  [pf purge]
   15     0     0     0  DL      -       0xffffffff84176e40  [soaiod4]
    9     0     0     0  DL      -       0xffffffff84176e40  [soaiod3]
    8     0     0     0  DL      -       0xffffffff84176e40  [soaiod2]
    7     0     0     0  DL      -       0xffffffff84176e40  [soaiod1]
    6     0     0     0  LL      (threaded)                  [cam]
100046                   L      *kernel  0xfffffe005873ecc0  [doneq0]
100047                   D       -       0xffffffff83c941c0  [async]
100080                   D       -       0xffffffff83c94040  [scanner]
   14     0     0     0  DL      seqstat 0xfffffe0007919888  [sequencer 00]
    5     0     0     0  DL      crypto_ 0xfffffe0053e0fc80  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffffe0053e0fc30  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff841a1960  [crypto]
   13     0     0     0  DL      (threaded)                  [geom]
100037                   D       -       0xffffffff8402af40  [g_event]
100038                   D       -       0xffffffff8402af80  [g_up]
100039                   D       -       0xffffffff8402afc0  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100028                   D       -       0xfffffe0053e0fe00  [thr_0]
100029                   D       -       0xfffffe0053e0fe80  [thr_1]
   12     0     0     0  WL      (threaded)                  [intr]
100010                   I                                   [swi6: task queue]
100011                   I                                   [swi6: Giant taskq]
100014                   I                                   [swi5: fast taskq]
100030                   I                                   [swi1: netisr 0]
100031                   I                                   [swi3: vm]
100032                   I                                   [swi4: clock (0)]
100033                   I                                   [swi4: clock (1)]
100034                   I                                   [swi1: hpts]
100035                   I                                   [swi1: hpts]
100048                   I                                   [irq24: virtio_pci0]
100049                   I                                   [irq25: virtio_pci0]
100050                   I                                   [irq26: virtio_pci0]
100051                   I                                   [irq27: virtio_pci0]
100052                   I                                   [irq28: virtio_pci1]
100053                   I                                   [irq29: virtio_pci1]
100054                   I                                   [irq30: virtio_pci1]
100055                   I                                   [irq31: virtio_pci1]
100056                   I                                   [irq32: virtio_pci1]
100061                   I                                   [irq10: virtio_pci2]
100063                   I                                   [irq1: atkbd0]
100064                   I                                   [irq12: psm0]
100065                   I                                   [swi0: uart uart++]
100073                   I                                   [swi1: pf send]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffffe0053d4b538  [init]
   10     0     0     0  DL      audit_w 0xffffffff841a2900  [audit]
    0     0     0     0  RLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff8402be40  [swapper]
100005                   D       -       0xfffffe000791c500  [softirq_0]
100006                   D       -       0xfffffe000791c400  [softirq_1]
100007                   D       -       0xfffffe000791c300  [if_io_tqg_0]
100008                   D       -       0xfffffe000791c200  [if_io_tqg_1]
100009                   D       -       0xfffffe000791c100  [if_config_tqg_0]
100012                   Run     CPU 1                       [thread taskq]
100013                   D       -       0xfffffe0053dde000  [inm_free taskq]
100015                   D       -       0xfffffe0053df1c00  [kqueue_ctx taskq]
100016                   D       -       0xfffffe0053df1b00  [linuxkpi_irq_wq]
100017                   D       -       0xfffffe0053df1a00  [aiod_kick taskq]
100018                   D       -       0xfffffe0053df1900  [in6m_free taskq]
100019                   D       -       0xfffffe0053df1800  [pci_hp taskq]
100020                   D       -       0xfffffe0053df1700  [linuxkpi_short_wq_0]
100021                   D       -       0xfffffe0053df1700  [linuxkpi_short_wq_1]
100022                   D       -       0xfffffe0053df1700  [linuxkpi_short_wq_2]
100023                   D       -       0xfffffe0053df1700  [linuxkpi_short_wq_3]
100024                   D       -       0xfffffe0053df1600  [linuxkpi_long_wq_0]
100025                   D       -       0xfffffe0053df1600  [linuxkpi_long_wq_1]
100026                   D       -       0xfffffe0053df1600  [linuxkpi_long_wq_2]
100027                   D       -       0xfffffe0053df1600  [linuxkpi_long_wq_3]
100036                   D       -       0xfffffe0054140d00  [firmware taskq]
100040                   D       -       0xfffffe0054140c00  [crypto_0]
100041                   D       -       0xfffffe0054140c00  [crypto_1]
100057                   D       -       0xfffffe0054140600  [vtnet0 rxq 0]
100058                   D       -       0xfffffe0054140500  [vtnet0 txq 0]
100059                   D       -       0xfffffe0054140400  [vtnet0 rxq 1]
100060                   D       -       0xfffffe0054140300  [vtnet0 txq 1]
100062                   D       vtbslp  0xfffffe0056b73100  [virtio_balloon]
100066                   D       -       0xfffffe0056fb3b00  [mca taskq]
100071                   D       -       0xffffffff82c5f900  [deadlkres]
100075                   D       -       0xfffffe0058349d00  [acpi_task_0]
100076                   D       -       0xfffffe0058349d00  [acpi_task_1]
100077                   D       -       0xfffffe0058349d00  [acpi_task_2]
100079                   D       -       0xfffffe0054140b00  [CAM taskq]
db> show all locks
Process 784 (syz-executor.0) thread 0xfffffe009e46d000 (100116)
exclusive sleep mutex process lock (process lock) r = 0 (0xfffffe009bf36660) locked @ /syzkaller/managers/main/kernel/sys/kern/kern_proc.c:453
Process 6 (cam) thread 0xfffffe0056aa0ac0 (100046)
exclusive rw SUrw (SUrw) r = 0 (0xfffffe0056fc1400) locked @ /syzkaller/managers/main/kernel/sys/ufs/ffs/ffs_softdep.c:11506
Process 0 (kernel) thread 0xfffffe0053dee1e0 (100012)
exclusive sleep mutex kernel arena domain (kernel arena domain) r = 0 (0xfffff80007001000) locked @ /syzkaller/managers/main/kernel/sys/kern/subr_vmem.c:789
exclusive sleep mutex vmem list lock (vmem list lock) r = 0 (0xffffffff83409bc0) locked @ /syzkaller/managers/main/kernel/sys/kern/subr_vmem.c:784
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
            devbuf         4216         4338K         4244
          tcp_hpts            6         3201K            6
         sysctloid        34320         2027K        34390
             vtbuf           24         1968K           46
              kobj          326         1304K          485
            newblk            9         1026K        17920
          vfscache            3         1025K            3
          inodedep          107          552K        17714
               pcb           28          537K         3866
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          140          270K        20178
            acpica         1674          184K        54712
         vnet_data            1          168K            1
              vmem            3          146K            4
           tidhash            3          141K            3
            linker          356          140K          396
            dirrem          530          133K        17540
           pagedep            9          130K        17301
        tfo_ccache            1          128K            1
            DEVFS1          107          107K          124
               sem            4          106K            4
          filedesc           12           89K        34495
               BPF           46           88K         1079
               bus          984           80K         3475
          mtx_pool            2           72K            2
          syncache            1           68K            1
          freefile          530           67K        17537
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          509           64K          509
              umtx          352           44K          352
           kdtrace          215           43K        37193
              temp           35           33K         2617
         hostcache            1           32K            1
               shm            1           32K            1
            DEVFS3          126           32K          136
               msg            4           30K            4
        gtaskqueue           18           26K           18
          savedino           93           24K        10004
            kbdmux            6           22K            6
            ifaddr           70           20K           72
        DEVFS_RULE           56           20K           56
         ufs_mount            5           17K            6
              proc            3           17K            3
               tty           16           16K           16
          routetbl          126           16K          403
           ithread           99           16K           99
            bus-sc           33           14K         1692
            KTRACE          100           13K          100
             ifnet            7           13K            7
       ether_multi          152           13K          162
           lltable           39           12K           43
              kenv           95           12K           95
      eventhandler          133           12K          133
         CAM queue            5           11K         1528
              GEOM           61           10K          490
              rman           84           10K          425
         sctp_timw           37           10K           37
         in6_multi           65            9K           65
              UART           12            9K           12
           devstat            4            9K            4
              ksem            1            8K         1451
               rpc            2            8K            2
         bmsafemap            1            8K        17637
             shmfd            1            8K           93
       pfs_vncache            1            8K            1
         pfs_nodes           20            8K           20
     audit_evclass          236            8K          294
              cred           27            7K          702
         taskqueue           60            7K           60
            sglist            5            7K            5
           CAM DEV            3            6K          510
            plimit           24            6K          484
            kqueue           62            6K        18256
            DEVFSP           83            6K         3013
       ufs_dirhash           24            5K           24
               UMA          270            5K          270
           session           35            5K           54
          pf_ifnet           10            5K           19
                vt           11            5K           11
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
          kcovinfo           64            4K           68
           pwddesc           60            4K        18250
           acpisem           28            4K           28
             selfd           55            4K       230018
             lockf           32            4K           63
             hhook           15            4K           17
       fpukern_ctx            3            3K            3
         proc-args           52            3K          711
          terminal           11            3K           11
            select           19            3K           56
           uidinfo            3            3K           13
        local_apic            1            2K            1
           io_apic            1            2K            1
         ipsec-saq            2            2K            2
           CAM CCB            1            2K         2754
            ip6ndp           12            2K           13
          sctp_ifa           13            2K           14
            Unitno           27            2K          127
           CAM XPT           22            2K          543
          in_multi            6            2K            8
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
               msi            9            2K            9
             clone            9            2K            9
               tun            7            2K            7
          freework            5            2K        17292
           softdep            1            1K            1
          freeblks            4            1K        17291
            sahead            1            1K            1
          secasvar            1            1K            1
             nhops            6            1K            8
       vnodemarker            2            1K           62
      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
          procdesc            5            1K           18
         newdirblk            4            1K        17282
             mkdir            4            1K        34564
            diradd            4            1K        17581
              pfil            4            1K            4
              cdev            2            1K            2
       inpcbpolicy           15            1K         2497
               osd            8            1K           54
    chacha20random            1            1K            1
             xform            5            1K         2056
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
            vnodes            1            1K            1
           CAM SIM            2            1K            2
              ktls            1            1K            1
            feeder            7            1K            7
           tcpfunc            3            1K            3
        loginclass            3            1K            6
            prison            6            1K            6
       lkpikmalloc            5            1K            6
        aesni_data            2            1K            2
            apmdev            1            1K            1
          atkbddev            2            1K            2
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
          CAM path            4            1K         1034
          pmchooks            1            1K            1
          nexusdev            7            1K            7
            soname            4            1K         8280
          filecaps            5            1K          120
          sctp_vrf            1            1K            1
              vnet            1            1K            1
           entropy            2            1K           48
          acpiintr            1            1K            1
               pmc            1            1K            1
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          p1003.1b            1            1K            1
        sctp_mcore            0            0K            0
        sctp_socko            0            0K          175
         sctp_iter            0            0K           11
         sctp_mvrf            0            0K            0
         sctp_cpal            0            0K            0
         sctp_cmsg            0            0K            0
         sctp_stre            0            0K            0
         sctp_athi            0            0K            0
         sctp_athm            0            0K         1878
         sctp_atky            0            0K         2311
         sctp_atcl            0            0K         1877
         sctp_a_it            0            0K           11
         sctp_aadr            0            0K            0
         sctp_stro            0            0K          433
         sctp_stri            0            0K            2
          sctp_map            0            0K          866
            tcp_do            0            0K            0
           tcp_fsb            0            0K            0
          cdg data            0            0K            0
        vegas data            0            0K            0
         htcp data            0            0K            0
            mqdata            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
        dctcp data            0            0K            0
        cubic data            0            0K            0
          chd data            0            0K            0
       NEWdirectio            0            0K            0
        NEWNFSnode            0            0K            0
        madt_table            0            0K            2
          smartpqi            0            0K            0
         NFSCL lck            0            0K            0
      NFSCL lckown            0            0K            0
      NFSCL client            0            0K            0
       NFSCL deleg            0            0K            0
        NFSCL open            0            0K            0
       NFSCL owner            0            0K            0
            NFS fh            0            0K            0
           NFS req            0            0K            0
              iavf            0            0K            0
               ixl            0            0K            0
     NFSD usrgroup            0            0K            0
       NFSD string            0            0K            0
       NFSD V4lock            0            0K            0
      NFSD V4state            0            0K            0
     NFSD srvcache            0            0K            0
        ice-resmgr            0            0K            0
         ice-osdep            0            0K            0
               ice            0            0K            0
             axgbe            0            0K            0
       msdosfs_fat            0            0K            0
     msdosfs_mount            0            0K            0
      msdosfs_node            0            0K            0
            DEVFS4            0            0K            0
            DEVFS2            0            0K            0
          xen_intr            0            0K            0
            gntdev            0            0K            0
       privcmd_dev            0            0K            0
           xen_hvm            0            0K            0
         legacydrv            0            0K            0
            qpidrv            0            0K            0
        evtchn_dev            0            0K            0
          xenstore            0            0K            0
      dmar_idpgtbl            0            0K            0
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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
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8320     990       29545       0     254   38133760        0
              pbuf   2624       0     989           0       0       2    2595136        0
              mbuf    256    8577     993       89451       0     254    2449920        0
          BUF TRIE    144     192   11568         986       0      62    1693440        0
        malloc-384    384    4155      15        4177       0      30    1601280        0
        malloc-128    128   12201      75       29797       0     126    1571328        0
       malloc-4096   4096     326       1         485       0       2    1339392        0
       UMA Slabs 0    112   10471       2       10471       0     126    1172976        0
      mbuf_cluster   2048     555       1         555       0     254    1138688        0
         vmem btag     56   16608     143       16608       0     254     938056        0
        RADIX NODE    144    6240     223      497325       0      62     930672        0
         FFS inode   1160     518      56       18055       0       8     665840        0
        malloc-384    384     187    1323       21520       0      30     579840        0
        malloc-256    256     693     942       70411       0      62     418560        0
         VM OBJECT    264    1355     160      259197       0      30     399960        0
      malloc-65536  65536       4       2         256       0       1     393216        0
            lkpimm    160       1    2324           1       0      62     372000        0
          lkpicurr    160       2    2323           2       0      62     372000        0
            THREAD   1808     154      22       18942       0       8     318208        0
        256 Bucket   2048     136      18       11553       0       8     315392        0
             VNODE    448     555     102       18094       0      30     294336        0
        malloc-256    256      93    1032       27640       0      62     288000        0
       malloc-4096   4096      60       9       18252       0       2     282624        0
      malloc-65536  65536       2       2          10       0       1     262144        0
         malloc-64     64    3918      51        3980       0     254     254016        0
        malloc-128    128     933    1020       22689       0     126     249984        0
         malloc-16     16   13997     503       14937       0     254     232000        0
            DEVCTL   1024       0     220         153       0       0     225280        0
      malloc-65536  65536       3       0           3       0       1     196608        0
      malloc-16384  16384       5       7       17245       0       1     196608        0
         MAP ENTRY     96    1511     463     1017813       0     126     189504        0
         UMA Zones    768     242       2         242       0      16     187392        0
         malloc-32     32    5550     246       22950       0     254     185472        0
        malloc-128    128    1295     100       60274       0     126     178560        0
        malloc-256    256      54     636       18859       0      62     176640        0
         sctp_asoc   2288       0      75         433       0     254     171600        0
       S VFS Cache    104    1026     378       20176       0     126     146016        0
       FFS2 dinode    256     518      52       18055       0      62     145920        0
           VMSPACE   2544      37      20       18228       0       5     145008        0
       mbuf_packet    256      36     519       18143       0     254     142080        0
      malloc-65536  65536       0       2         136       0       1     131072        0
       malloc-1024   1024     119       5         305       0      16     126976        0
          ksiginfo    112      63     981        1338       0     126     116928        0
           sctp_ep   1280       0      84        1443       0     254     107520        0
        malloc-256    256     292     128       20928       0      62     107520        0
       malloc-8192   8192      12       1          14       0       1     106496        0
              PROC   1336      59      19       18249       0       8     104208        0
       malloc-2048   2048       9      41        5378       0       8     102400        0
      malloc-32768  32768       1       2         131       0       1      98304        0
      malloc-16384  16384       6       0          21       0       1      98304        0
        128 Bucket   1024      57      38        1944       0      16      97280        0
       malloc-4096   4096      22       1          27       0       2      94208        0
         64 Bucket    512     107      69       13685       0      30      90112        0
         filedesc0   1072      60      24       18250       0       8      90048        0
          UMA Kegs    384     227       6         227       0      30      89472        0
         malloc-64     64     943     443      249748       0     254      88704        0
            socket    944      40      48        7396       0     254      83072        0
       malloc-4096   4096      15       3          29       0       2      73728        0
      malloc-16384  16384       2       2         162       0       1      65536        0
             g_bio    408       5     155        8460       0      30      65280        0
         malloc-64     64     724     221       41301       0     254      60480        0
       malloc-8192   8192       5       2         106       0       1      57344        0
       malloc-2048   2048      16      12         627       0       8      57344        0
        sctp_raddr    736       0      77         433       0     254      56672        0
              pipe    744      23      52       11093       0      16      55800        0
       malloc-4096   4096      11       2         546       0       2      53248        0
         32 Bucket    256      99      96       17308       0      62      49920        0
            clpbuf   2624       0      16          21       0      16      41984        0
             NAMEI   1024       0      40      102527       0      16      40960        0
       malloc-8192   8192       2       3          30       0       1      40960        0
       malloc-1024   1024       3      37         511       0      16      40960        0
            pcpu-8      8    4711     409       11384       0     254      40960        0
             Files     80     235     265       65473       0     126      40000        0
           DIRHASH   1024      34       2          34       0      16      36864        0
       malloc-1024   1024       3      33         479       0      16      36864        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-32768  32768       1       0           1       0       1      32768        0
           pcpu-64     64     487      25         487       0     254      32768        0
        malloc-256    256      75      45        1036       0      62      30720        0
        malloc-256    256      89      31         549       0      62      30720        0
         TURNSTILE    136     177      33         177       0      62      28560        0
             KNOTE    160      28     147      145925       0      62      28000        0
        malloc-128    128      20     197         293       0     126      27776        0
       malloc-8192   8192       3       0           3       0       1      24576        0
       malloc-1024   1024      16       8          33       0      16      24576        0
        malloc-512    512      10      38         942       0      30      24576        0
    ertt_txseginfo     40       0     606       24280       0     254      24240        0
               PWD     32      19     737       17336       0     254      24192        0
            ttyinq    160     135      15         300       0      62      24000        0
        malloc-128    128     124      62       17742       0     126      23808        0
             unpcb    256      20      70        3412       0     254      23040        0
           ttyoutq    256      72      18         160       0      62      23040        0
        malloc-384    384      52       8          52       0      30      23040        0
       malloc-1024   1024      13       7        2400       0      16      20480        0
         malloc-64     64       0     315         633       0     254      20160        0
             ripcb    496       5      35        1445       0     254      19840        0
        SLEEPQUEUE     88     177      47         177       0     126      19712        0
            itimer    352       0      55        3284       0      30      19360        0
       Mountpoints   2752       2       5           2       0       4      19264        0
        malloc-384    384      38      12          44       0      30      19200        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-4096   4096       2       2         695       0       2      16384        0
       malloc-2048   2048       7       1           7       0       8      16384        0
         malloc-32     32      57     447         474       0     254      16128        0
      vtnet_tx_hdr     24       0     668       26817       0     254      16032        0
          8 Bucket     80      48     152        2992       0     126      16000        0
        malloc-384    384      31       9          31       0      30      15360        0
             tcpcb   1080       4      10          43       0     254      15120        0
       malloc-4096   4096       0       3       17479       0       2      12288        0
        malloc-512    512       1      23         121       0      30      12288        0
         malloc-64     64      89     100       16912       0     254      12096        0
         malloc-32     32       9     369        2286       0     254      12096        0
         malloc-32     32     260     118        4271       0     254      12096        0
         16 Bucket    144      49      35         315       0      62      12096        0
         malloc-16     16     520     230        4860       0     254      12000        0
         udp_inpcb    496       6      18         725       0     254      11904        0
        malloc-128    128      75      18         479       0     126      11904        0
              kenv    258      15      30        1042       0      30      11610        0
     routing nhops    256      27      18          34       0      62      11520        0
        malloc-256    256      27      18         451       0      62      11520        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-4096   4096       2       0           3       0       2       8192        0
       malloc-2048   2048       0       4           2       0       8       8192        0
       malloc-1024   1024       8       0           8       0      16       8192        0
       malloc-1024   1024       4       4          96       0      16       8192        0
        malloc-512    512      10       6          70       0      30       8192        0
        malloc-512    512       6      10          21       0      30       8192        0
        malloc-512    512       3      13          62       0      30       8192        0
           rtentry    176      30      16          34       0      62       8096        0
              PGRP     88      35      57          54       0     126       8096        0
          rl_entry     40      76     126          76       0     254       8080        0
sctp_stream_msg_out    112       0      72         402       0     254       8064        0
        sctp_laddr     48       0     168          12       0     254       8064        0
          sackhole     32       0     252           5       0     254       8064        0
             udpcb     32       6     246        1009       0     254       8064        0
              ertt     72       4     108          43       0     126       8064        0
         malloc-64     64      42      84        2038       0     254       8064        0
         malloc-64     64       4     122           8       0     254       8064        0
         malloc-64     64       9     117          75       0     254       8064        0
         malloc-32     32      95     157        2711       0     254       8064        0
         malloc-32     32      38     214        3480       0     254       8064        0
         malloc-32     32      23     229         112       0     254       8064        0
          4 Bucket     48       2     166         196       0     254       8064        0
          2 Bucket     32      51     201        1684       0     254       8064        0
         malloc-16     16      21     479        2687       0     254       8000        0
         malloc-16     16      17     483          31       0     254       8000        0
         malloc-16     16      33     467       25021       0     254       8000        0
         malloc-16     16      21     479          26       0     254       8000        0
         malloc-16     16      11     489          20       0     254       8000        0
     udplite_inpcb    496       0      16         284       0     254       7936        0
         tcp_inpcb    496       4      12          43       0     254       7936        0
        malloc-128    128      15      47         338       0     126       7936        0
        malloc-384    384       1      19         385       0      30       7680        0
        malloc-256    256      14      16         269       0      62       7680        0
     FPU_save_area    832       1       8           1       0      16       7488        0
            cpuset    104       7      55         126       0     126       6448        0
         domainset     40       0     126          79       0     254       5040        0
 epoch_record pcpu    256       4      12           4       0      62       4096        0
       malloc-2048   2048       1       1          13       0       8       4096        0
       malloc-2048   2048       1       1           1       0       8       4096        0
       malloc-2048   2048       2       0           2       0       8       4096        0
       malloc-1024   1024       4       0           4       0      16       4096        0
           pcpu-16     16       7     249           7       0     254       4096        0
         hostcache     64       1      62           1       0     254       4032        0
          syncache    168       0      24           4       0     254       4032        0
         malloc-32     32       0     126           2       0     254       4032        0
         malloc-16     16       4     246           5       0     254       4000        0
        malloc-128    128       1      30          35       0     126       3968        0
        sctp_readq    152       0      26           1       0     254       3952        0
        sctp_chunk    152       0      26           3       0     254       3952        0
       UMA Slabs 1    176       9      13           9       0      62       3872        0
        malloc-384    384       2       8           2       0      30       3840        0
            mqnode    416       3       6           3       0      30       3744        0
        KMAP ENTRY     96      12      27          14       0       0       3744        0
              vmem   1856       1       1           1       0       8       3712        0
           SMR CPU     32       3      60           3       0     254       2016        0
        SMR SHARED     24       3      60           3       0     254       1512        0
       FFS1 dinode    128       0       0           0       0     126          0        0
            da_ccb    544       0       0           0       0      16          0        0
           ada_ccb    272       0       0           0       0      30          0        0
             swblk    136       0       0           0       0      62          0        0
          swpctrie    144       0       0           0       0      62          0        0
   sctp_asconf_ack     48       0       0           0       0     254          0        0
       sctp_asconf     40       0       0           0       0     254          0        0
   cdg_qdiffsample     16       0       0           0       0     254          0        0
   pf state scrubs     40       0       0           0       0     254          0        0
   pf frag entries     40       0       0           0       0     254          0        0
          pf frags    248       0       0           0       0      62          0        0
  pf table entries    160       0       0           0       0      62          0        0
pf table entry counters     64       0       0           0       0     254          0        0
   pf source nodes    136       0       0           0       0     254          0        0
     pf state keys     88       0       0           0       0     126          0        0
         pf states    312       0       0           0       0       0          0        0
           pf tags    104       0       0           0       0     126          0        0
          pf mtags     48       0       0           0       0     254          0        0
       tcp_bbr_pcb    832       0       0           0       0      16          0        0
       tcp_bbr_map    128       0       0           0       0     126          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_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
             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
            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
        TMPFS node    224       0       0           0       0      62          0        0
        mqnotifier    216       0       0           0       0      62          0        0
            mvdata     64       0       0           0       0     254          0        0
            mqueue    248       0       0           0       0      62          0        0
           NCLNODE    584       0       0           0       0      16          0        0
     LTS VFS Cache    360       0       0           0       0      30          0        0
       L VFS Cache    320       0       0           0       0      30          0        0
     STS VFS Cache    144       0       0           0       0      62          0        0
           cryptop    280       0       0           0       0      30          0        0
  linux_dma_object     24       0       0           0       0     254          0        0
  linux_dma_pctrie    144       0       0           0       0      62          0        0
   IOMMU_MAP_ENTRY    120       0       0           0       0     126          0        0
      ktls_session    192       0       0           0       0      62          0        0
    mbuf_jumbo_16k  16384       0       0           0       0     254          0        0
     mbuf_jumbo_9k   9216       0       0           0       0     254          0        0
      audit_record   1280       0       0           0       0       8          0        0
        MAC labels     40       0       0           0       0     254          0        0
            vnpbuf   2624       0       0           0       0      64          0        0
            mdpbuf   2624       0       0           0       0       3          0        0
           nfspbuf   2624       0       0           0       0      16          0        0
            swwbuf   2624       0       0           0       0       8          0        0
            swrbuf   2624       0       0           0       0      16          0        0
          umtx_shm     88       0       0           0       0     126          0        0
           umtx pi     96       0       0           0       0     126          0        0
rangeset pctrie nodes    144       0       0           0       0      62          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-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-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-8192   8192       0       0           0       0       1          0        0
       malloc-2048   2048       0       0           0       0       8          0        0
        malloc-512    512       0       0           0       0      30          0        0
        malloc-512    512       0       0           0       0      30          0        0
        malloc-512    512       0       0           0       0      30          0        0
        malloc-384    384       0       0           0       0      30          0        0
           pcpu-32     32       0       0           0       0     254          0        0
            pcpu-4      4       0       0           0       0     254          0        0
            fakepg    104       0       0           0       0     126          0        0
          UMA Hash    256       0       0           0       0      62          0        0

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-freebsd-main 2021/07/24 21:35 freebsd-src 47aeda7b7055 4d1b57d4 console log report panic: ASan: Invalid access, 8-byte read in itimer_proc_continue
* Struck through repros no longer work on HEAD.