syzbot


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

Status: auto-closed as invalid on 2021/12/19 21:15
Reported-by: syzbot+9dbb7c88a469d80f48c9@syzkaller.appspotmail.com
First crash: 968d, last: 896d

Sample crash report:
panic: ASan: Invalid access, 4-byte read at 0xfffffe0058997568, UMAUseAfterFree(fd)
cpuid = 0
time = 1628485015
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe00077ec0b0
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe00077ec210
vpanic() at vpanic+0x2c5/frame 0xfffffe00077ec2f0
panic() at panic+0xb5/frame 0xfffffe00077ec3b0
__asan_load4_noabort() at __asan_load4_noabort+0x216/frame 0xfffffe00077ec470
sctp_gather_internal_ifa_flags() at sctp_gather_internal_ifa_flags+0x2e/frame 0xfffffe00077ec4a0
sctp_is_address_in_scope() at sctp_is_address_in_scope+0xae/frame 0xfffffe00077ec4e0
sctp_add_addresses_to_i_ia() at sctp_add_addresses_to_i_ia+0x17d/frame 0xfffffe00077ec580
sctp_send_initiate() at sctp_send_initiate+0x13b0/frame 0xfffffe00077ec6c0
sctp_t1init_timer() at sctp_t1init_timer+0x2cb/frame 0xfffffe00077ec710
sctp_timeout_handler() at sctp_timeout_handler+0x9a1/frame 0xfffffe00077ec850
softclock_call_cc() at softclock_call_cc+0x3d9/frame 0xfffffe00077eca00
softclock() at softclock+0x152/frame 0xfffffe00077eca50
ithread_loop() at ithread_loop+0x4f1/frame 0xfffffe00077ecbb0
fork_exit() at fork_exit+0xd0/frame 0xfffffe00077ecbf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00077ecbf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 12 tid 100032 ]
Stopped at      kdb_enter+0x6b: movq    $0,0x28eb9ca(%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         0xb51a57601617541d
rdx         0xdffff7c000000000
rbx                          0
rsp         0xfffffe00077ec1f0
rbp         0xfffffe00077ec210
rsi                        0x1
rdi         0xffffffff840889c0  cov_trace_pc
r8                         0x3
r9          0xfffffe00077ebd28
r10                          0
r11         0xfffffe00925136f0
r12         0xfffffe0053dfb020
r13         0xfffffe00077ec201
r14         0xffffffff82c62380  .str.18
r15         0xffffffff82c62380  .str.18
rip         0xffffffff8179f96b  kdb_enter+0x6b
rflags                    0x46
kdb_enter+0x6b: movq    $0,0x28eb9ca(%rip)
db> show proc
Process 12 (intr) at 0xfffffe0053deea70:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff8402c6c0
 ABI: null
 flag: 0x10000284  flag2: 0
 reaper: 0xffffffff8402c6c0 reapsubtree: 12
 sigparent: 20
 vmspace: 0xffffffff8402d640
   (map 0xffffffff8402d640)
   (map.pmap 0xffffffff8402d700)
   (pmap 0xffffffff8402d760)
 threads: 23
100012                   I                                   [swi6: task queue]
100013                   I                                   [swi6: Giant taskq]
100015                   I                                   [swi5: fast taskq]
100032                   Run     CPU 0                       [swi4: clock (0)]
100033                   I                                   [swi4: clock (1)]
100034                   I                                   [swi1: netisr 0]
100035                   I                                   [swi3: vm]
100036                   I                                   [swi1: hpts]
100037                   I                                   [swi1: hpts]
100050                   I                                   [irq24: virtio_pci0]
100051                   I                                   [irq25: virtio_pci0]
100052                   I                                   [irq26: virtio_pci0]
100053                   I                                   [irq27: virtio_pci0]
100054                   I                                   [irq28: virtio_pci1]
100055                   I                                   [irq29: virtio_pci1]
100056                   I                                   [irq30: virtio_pci1]
100057                   L      *kernel  0xfffffe0053e25000  [irq31: virtio_pci1]
100058                   I                                   [irq32: virtio_pci1]
100063                   I                                   [irq10: virtio_pci2]
100065                   I                                   [irq1: atkbd0]
100066                   I                                   [irq12: psm0]
100067                   I                                   [swi0: uart uart++]
100075                   I                                   [swi1: pf send]
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 2948  2940  2948     0  Ss      select  0xfffffe0091f8e1c0  dhclient
 2944     1  2944     0  Ss      select  0xfffffe009b34e5c0  dhclient
 2940  2931   436    65  S       select  0xfffffe00925157c0  dhclient
 2931   436   436     0  S       wait    0xfffffe0058802000  sh
 2927   780  2927     0  Ss      piperd  0xfffffe0058801ba0  syz-executor.0
 2286     1   794     0  S       uwait   0xfffffe00925dd200  syz-executor.2
 2285     1   794     0  S       umtxn   0xfffffe009b113500  syz-executor.2
 2282     1   794     0  S       uwait   0xfffffe009b2eae80  syz-executor.2
 2281     1   794     0  S       uwait   0xfffffe009b34ea00  syz-executor.2
 2279     1   794     0  S       uwait   0xfffffe009aa24600  syz-executor.2
 2278     1   794     0  S       uwait   0xfffffe009b34ed00  syz-executor.2
 2274     1   788     0  S       uwait   0xfffffe0091f8e300  syz-executor.1
 2272     1   788     0  S       uwait   0xfffffe0092515480  syz-executor.1
 2270     1   788     0  S       uwait   0xfffffe0092515880  syz-executor.1
 2268     1   788     0  S       uwait   0xfffffe009b113380  syz-executor.1
 2263     1   788     0  S       umtxn   0xfffffe009aa24d00  syz-executor.1
 2262     1   788     0  S       uwait   0xfffffe009b113180  syz-executor.1
 2259     1   788     0  S       uwait   0xfffffe009aa24200  syz-executor.1
 2258     1   788     0  S       uwait   0xfffffe00925dd780  syz-executor.1
 2257     1   788     0  S       uwait   0xfffffe009aa24c00  syz-executor.1
 2255     1   788     0  S       uwait   0xfffffe0092515580  syz-executor.1
 1988     1  1988    65  Ss      select  0xfffffe009b34e840  dhclient
 1789     1  1789     0  Ss      select  0xfffffe009b1138c0  dhclient
 1786     1  1786     0  Ss      select  0xfffffe009b1135c0  dhclient
 1767     1  1767    65  Ss      select  0xfffffe009b113ac0  dhclient
 1547     1   788     0  S       uwait   0xfffffe009aa24f00  syz-executor.1
 1539     1   788     0  S       uwait   0xfffffe009aa24300  syz-executor.1
 1536     1   812     0  S       uwait   0xfffffe0092515d80  syz-executor.3
 1532     1   812     0  S       uwait   0xfffffe0092028c80  syz-executor.3
 1531     1   788     0  S       uwait   0xfffffe009aa24400  syz-executor.1
 1526     1   812     0  S       uwait   0xfffffe009b113e80  syz-executor.3
 1524     1   812     0  S       uwait   0xfffffe00584b1300  syz-executor.3
 1523     1   812     0  S       uwait   0xfffffe009aa24b00  syz-executor.3
 1504     1  1504     0  Ss      select  0xfffffe00925dd5c0  dhclient
 1501     1  1501     0  Ss      select  0xfffffe009b113c40  dhclient
 1486     1   788     0  S       uwait   0xfffffe0092028000  syz-executor.1
 1476     1  1476    65  Ss      select  0xfffffe00925dd740  dhclient
 1471     1   788     0  S       uwait   0xfffffe00925ddb00  syz-executor.1
 1465     1   788     0  S       uwait   0xfffffe009aa24900  syz-executor.1
 1464     1   788     0  S       uwait   0xfffffe0092515c80  syz-executor.1
 1350     1   812     0  S       uwait   0xfffffe0092515680  syz-executor.3
 1349     1   812     0  S       uwait   0xfffffe00925ddf00  syz-executor.3
 1307     0     0     0  DL      aiordy  0xfffffe009aa13000  [aiod4]
 1306     0     0     0  DL      aiordy  0xfffffe0091f74000  [aiod3]
 1305     0     0     0  DL      aiordy  0xfffffe0092519538  [aiod2]
 1304     0     0     0  DL      aiordy  0xfffffe0058802538  [aiod1]
 1230     1  1230     0  Ss      select  0xfffffe00925dd940  dhclient
 1225     1  1225     0  Ss      select  0xfffffe009b113cc0  dhclient
  794   780   794     0  Ss      piperd  0xfffffe00925062e8  syz-executor.2
  780   778   778     0  S       (threaded)                  syz-fuzzer
100118                   S       uwait   0xfffffe0058890100  syz-fuzzer
100121                   S       uwait   0xfffffe00584b1000  syz-fuzzer
100122                   S       uwait   0xfffffe00584b1100  syz-fuzzer
100123                   S       uwait   0xfffffe00584b1200  syz-fuzzer
100124                   S       uwait   0xfffffe0058890480  syz-fuzzer
100125                   S       uwait   0xfffffe0058890380  syz-fuzzer
100126                   S       uwait   0xfffffe0092028a80  syz-fuzzer
100127                   S       uwait   0xfffffe0092028b80  syz-fuzzer
100129                   S       kqread  0xfffffe0058773700  syz-fuzzer
  778   776   778     0  Ss      pause   0xfffffe00920695e8  csh
  776   694   776     0  Ss      select  0xfffffe00920286c0  sshd
  760     1   760     0  Ss+     ttyin   0xfffffe0056fe2cb0  getty
  759     1   759     0  Ss+     ttyin   0xfffffe00575f88b0  getty
  758     1   758     0  Ss+     ttyin   0xfffffe00575f8cb0  getty
  757     1   757     0  Ss+     ttyin   0xfffffe00583e70b0  getty
  756     1   756     0  Ss+     ttyin   0xfffffe00583e74b0  getty
  755     1   755     0  Ss+     ttyin   0xfffffe00583e78b0  getty
  754     1   754     0  Ss+     ttyin   0xfffffe00583e7cb0  getty
  753     1   753     0  Ss+     ttyin   0xfffffe00575220b0  getty
  752     1   752     0  Ss+     ttyin   0xfffffe00575224b0  getty
  698     1   698     0  Ss      nanslp  0xffffffff84058200  cron
  694     1   694     0  Ss      select  0xfffffe0091f8e7c0  sshd
  507     1   507     0  Ss      select  0xfffffe00584b1740  syslogd
  436     1   436     0  Ss      wait    0xfffffe005897a000  devd
  435     1   435    65  Ss      select  0xfffffe0091f8ea40  dhclient
  350     1   350     0  Ss      select  0xfffffe0056ff80c0  dhclient
  347     1   347     0  Ss      select  0xfffffe00584b15c0  dhclient
   23     0     0     0  DL      vlruwt  0xfffffe005876a538  [vnlru]
   22     0     0     0  DL      syncer  0xffffffff84180380  [syncer]
   21     0     0     0  DL      (threaded)                  [bufdaemon]
100085                   D       qsleep  0xffffffff8417e1a0  [bufdaemon]
100086                   D       -       0xffffffff83411f80  [bufspacedaemon-0]
100096                   D       sdflush 0xfffffe0058893ce8  [/ worker]
   20     0     0     0  DL      psleep  0xffffffff841b6640  [vmdaemon]
   19     0     0     0  DL      (threaded)                  [pagedaemon]
100083                   D       psleep  0xffffffff841aa178  [dom0]
100087                   D       launds  0xffffffff841aa184  [laundry: dom0]
100088                   D       umarcl  0xffffffff81e9a6a0  [uma]
   18     0     0     0  DL      -       0xffffffff83e0f320  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff84d79460  [sctp_iterator]
   16     0     0     0  DL      pftm    0xffffffff84746e20  [pf purge]
   15     0     0     0  DL      -       0xffffffff841794c0  [soaiod4]
    9     0     0     0  DL      -       0xffffffff841794c0  [soaiod3]
    8     0     0     0  DL      -       0xffffffff841794c0  [soaiod2]
    7     0     0     0  DL      -       0xffffffff841794c0  [soaiod1]
    6     0     0     0  DL      (threaded)                  [cam]
100048                   D       -       0xffffffff83c94ac0  [doneq0]
100049                   D       -       0xffffffff83c94a40  [async]
100082                   D       -       0xffffffff83c948c0  [scanner]
   14     0     0     0  DL      seqstat 0xfffffe0056a9dc88  [sequencer 00]
    5     0     0     0  DL      crypto_ 0xfffffe0053c01b80  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffffe0053c01b30  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff841a4220  [crypto]
   13     0     0     0  DL      (threaded)                  [geom]
100039                   D       -       0xffffffff8402b7c0  [g_event]
100040                   D       -       0xffffffff8402b800  [g_up]
100041                   D       -       0xffffffff8402b840  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100029                   D       -       0xfffffe0053df5300  [thr_0]
100030                   D       -       0xfffffe0053df5380  [thr_1]
100031                   D       -       0xffffffff8417a748  [alloc_0]
   12     0     0     0  RL      (threaded)                  [intr]
100012                   I                                   [swi6: task queue]
100013                   I                                   [swi6: Giant taskq]
100015                   I                                   [swi5: fast taskq]
100032                   Run     CPU 0                       [swi4: clock (0)]
100033                   I                                   [swi4: clock (1)]
100034                   I                                   [swi1: netisr 0]
100035                   I                                   [swi3: vm]
100036                   I                                   [swi1: hpts]
100037                   I                                   [swi1: hpts]
100050                   I                                   [irq24: virtio_pci0]
100051                   I                                   [irq25: virtio_pci0]
100052                   I                                   [irq26: virtio_pci0]
100053                   I                                   [irq27: virtio_pci0]
100054                   I                                   [irq28: virtio_pci1]
100055                   I                                   [irq29: virtio_pci1]
100056                   I                                   [irq30: virtio_pci1]
100057                   L      *kernel  0xfffffe0053e25000  [irq31: virtio_pci1]
100058                   I                                   [irq32: virtio_pci1]
100063                   I                                   [irq10: virtio_pci2]
100065                   I                                   [irq1: atkbd0]
100066                   I                                   [irq12: psm0]
100067                   I                                   [swi0: uart uart++]
100075                   I                                   [swi1: pf send]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffffe0053d4f538  [init]
   10     0     0     0  DL      audit_w 0xffffffff841a51c0  [audit]
    0     0     0     0  RLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff8402c6c0  [swapper]
100005                   D       -       0xfffffe0053de6e00  [if_config_tqg_0]
100006                   D       -       0xfffffe0053de6d00  [softirq_0]
100007                   D       -       0xfffffe0053de6c00  [softirq_1]
100008                   D       -       0xfffffe0053de6b00  [if_io_tqg_0]
100009                   D       -       0xfffffe0053de6a00  [if_io_tqg_1]
100010                   D       -       0xfffffe0053de6900  [in6m_free taskq]
100011                   D       -       0xfffffe0053de6800  [deferred_unmount ta]
100014                   Run     CPU 1                       [thread taskq]
100016                   D       -       0xfffffe0053de6300  [linuxkpi_irq_wq]
100017                   D       -       0xfffffe0053de6200  [kqueue_ctx taskq]
100018                   D       -       0xfffffe0053de6100  [aiod_kick taskq]
100019                   D       -       0xfffffe0053de6000  [pci_hp taskq]
100020                   D       -       0xfffffe0053df6e00  [inm_free taskq]
100021                   D       -       0xfffffe0053df6d00  [linuxkpi_short_wq_0]
100022                   D       -       0xfffffe0053df6d00  [linuxkpi_short_wq_1]
100023                   D       -       0xfffffe0053df6d00  [linuxkpi_short_wq_2]
100024                   D       -       0xfffffe0053df6d00  [linuxkpi_short_wq_3]
100025                   D       -       0xfffffe0053df6c00  [linuxkpi_long_wq_0]
100026                   D       -       0xfffffe0053df6c00  [linuxkpi_long_wq_1]
100027                   D       -       0xfffffe0053df6c00  [linuxkpi_long_wq_2]
100028                   D       -       0xfffffe0053df6c00  [linuxkpi_long_wq_3]
100038                   D       -       0xfffffe0053df6a00  [firmware taskq]
100042                   D       -       0xfffffe0053df6000  [crypto_0]
100043                   D       -       0xfffffe0053df6000  [crypto_1]
100059                   D       -       0xfffffe0056b83500  [vtnet0 rxq 0]
100060                   D       -       0xfffffe0056b83400  [vtnet0 txq 0]
100061                   D       -       0xfffffe0056b83300  [vtnet0 rxq 1]
100062                   D       -       0xfffffe0056b83200  [vtnet0 txq 1]
100064                   D       vtbslp  0xfffffe0056fb0480  [virtio_balloon]
100068                   D       -       0xfffffe0056fc6100  [mca taskq]
100073                   D       -       0xffffffff82c69300  [deadlkres]
100077                   D       -       0xfffffe0056a42900  [acpi_task_0]
100078                   D       -       0xfffffe0056a42900  [acpi_task_1]
100079                   D       -       0xfffffe0056a42900  [acpi_task_2]
100081                   D       -       0xfffffe0056a42700  [CAM taskq]
  788   780   788     0  Z                                   syz-executor.1
  812   780   812     0  Z                                   syz-executor.3
db> show all locks
Process 12 (intr) thread 0xfffffe0053dfb020 (100032)
shared rw sctp-addr (sctp-addr) r = 0 (0xfffffe00081af448) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_output.c:2037
exclusive sleep mutex sctp-tcb (tcb) r = 0 (0xfffffe009bb4b1a0) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctputil.c:1768
Process 12 (intr) thread 0xfffffe0056fadac0 (100057)
exclusive sleep mutex vtnet0-rx1 (vtnet0-rx1) r = 0 (0xfffffe0056b70980) locked @ /syzkaller/managers/main/kernel/sys/dev/virtio/network/if_vtnet.c:2181
Process 0 (kernel) thread 0xfffffe0053df13a0 (100014)
exclusive sleep mutex kernel arena domain (kernel arena domain) r = 0 (0xfffff8007c7d5000) 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        34332         2028K        34402
             vtbuf           24         1968K           46
              kobj          326         1304K          485
            newblk            8         1026K         5789
          vfscache            3         1025K            3
               pcb          134          656K         4864
            linker          379          582K          427
          filedesc           66          521K         3870
          inodedep           16          518K         2191
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          206          418K         3062
              vmem            3          274K            6
            acpica         1674          184K        55752
         vnet_data            1          168K            1
           tidhash            3          141K            3
           pagedep           13          131K         1954
        tfo_ccache            1          128K            1
            DEVFS1          107          107K          124
               sem            4          106K            4
               BPF           46           88K           65
               bus          984           80K         3475
          mtx_pool            2           72K            2
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          510           64K          510
         sctp_stro           53           53K          767
           kdtrace          280           53K         6267
              umtx          418           53K          418
               shm            9           48K           21
         sctp_atcl          106           40K         2908
              temp           35           33K         2828
         hostcache            1           32K            1
            DEVFS3          126           32K          136
               msg            4           30K            4
        gtaskqueue           18           26K           18
            kbdmux            6           22K            6
            ifaddr           71           21K           77
        DEVFS_RULE           56           20K           56
          routetbl          207           19K          641
         ufs_mount            4           17K            5
              proc            3           17K            3
               tty           16           16K           16
           ithread           99           16K           99
            bus-sc           33           14K         1692
           lltable           43           14K          155
            KTRACE          101           13K          432
       ether_multi          157           13K          200
             ifnet            7           13K            7
              kenv           95           12K           95
      eventhandler          133           12K          133
         CAM queue            5           11K         1528
              GEOM           61           10K          489
              rman           84           10K          425
         in6_multi           71            9K           87
         bmsafemap            2            9K         2158
            kqueue           96            9K         2965
              UART           12            9K           12
           devstat            4            9K            4
         sctp_timw           32            8K           32
              ksem            1            8K          133
               rpc            2            8K            2
             shmfd            1            8K           19
       pfs_vncache            1            8K            1
         pfs_nodes           20            8K           20
     audit_evclass          237            8K          295
         sctp_atky          159            7K         3811
         taskqueue           63            7K           63
              cred           26            7K          339
            sglist            5            7K            5
           CAM DEV            3            6K          510
            plimit           24            6K          495
           pwddesc           92            6K         2950
            DEVFSP           80            5K          662
       ufs_dirhash           24            5K           24
               UMA          270            5K          270
          pf_ifnet           10            5K           31
           session           34            5K           67
                vt           11            5K           11
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
          kcovinfo           64            4K           85
             lockf           33            4K           67
           acpisem           28            4K           28
             hhook           15            4K           17
             selfd           52            4K        50044
         proc-args           53            3K          732
          terminal           11            3K           11
            select           19            3K           96
           uidinfo            3            3K           13
            ip6ndp           13            3K           18
          sctp_ifa           16            2K           18
        local_apic            1            2K            1
           io_apic            1            2K            1
       fpukern_ctx            2            2K            2
         ipsec-saq            2            2K            2
            Unitno           29            2K           81
         sctp_athm          106            2K         2968
          sctp_map          106            2K         1534
           CAM XPT           22            2K          543
          in_multi            6            2K            9
            dirrem            5            2K         2035
       ipsecpolicy            2            2K            2
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tiDeviceHandle_t * malloc            0            0K            0
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filedesc_to_leader            0            0K            0
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096   10595     167      960454       0     254   44081152        0
           tcp_log    416       0   15030      309823       0     254    6252480        0
              mbuf    256   11073     477     2076363       0     254    2956800        0
              pbuf   2624       0     778           0       0       2    2041472        0
        RADIX NODE    144   12714     553      114192       0      63    1910448        0
          BUF TRIE    144     242   11518        3937       0      62    1693440        0
        malloc-384    384    4301       9        4649       0      30    1655040        0
        malloc-128    128   11302     323       15658       0     126    1488000        0
      mbuf_cluster   2048     675       1         675       0     254    1384448        0
       UMA Slabs 0    112   12168      33       12168       0     126    1366512        0
       malloc-4096   4096     326       2         523       0       2    1343488        0
         vmem btag     56   20145      62       20145       0     254    1131592        0
      malloc-16384  16384      37      10        2112       0       1     770048        0
       tcp_bbr_map    128       0    5642      147609       0     126     722176        0
         FFS inode   1160     542      25        2539       0       8     657720        0
        256 Bucket   2048     249      19       20140       0       8     548864        0
    ertt_txseginfo     40       0   12019      433707       0     254     480760        0
         VM OBJECT    264    1644     111       45013       0      30     463320        0
       malloc-4096   4096     102       7        3588       0       2     446464        0
      malloc-65536  65536       4       2         464       0       1     393216        0
            lkpimm    168       1    2327           1       0      62     391104        0
          lkpicurr    168       2    2326           2       0      62     391104        0
            THREAD   1808     185      24        3316       0       8     377872        0
         MAP ENTRY     96    3001     569      166542       0     126     342720        0
             VNODE    448     580      68        2579       0      30     290304        0
         malloc-64     64    4138      83        7081       0     254     270144        0
      malloc-32768  32768       0       7         160       0       1     229376        0
      malloc-32768  32768       0       7        1360       0       1     229376        0
         malloc-16     16   14034     216       14174       0     254     228000        0
            DEVCTL   1024       4     216         165       0       0     225280        0
        malloc-256    256     282     588        7269       0      62     222720        0
           VMSPACE   2544      65      16        2924       0       4     206064        0
      malloc-65536  65536       1       2          13       0       1     196608        0
         UMA Zones    768     242       2         242       0      16     187392        0
         malloc-32     32    5328     216        6463       0     254     177408        0
       mbuf_packet    256      83     592        8985       0     254     172800        0
         sctp_asoc   2288      53      22         767       0     254     171600        0
       malloc-2048   2048      57      25        2253       0       8     167936        0
        malloc-128    128    1212      59       26362       0     126     162688        0
       malloc-1024   1024     123      25        2225       0      16     151552        0
              PROC   1336      93      18        2949       0       8     148296        0
       FFS2 dinode    256     542      28        2539       0      62     145920        0
       S VFS Cache    104    1023     303        3143       0     126     137904        0
        128 Bucket   1024     101      30        2598       0      16     134144        0
      malloc-65536  65536       2       0           2       0       1     131072        0
      malloc-65536  65536       2       0          10       0       1     131072        0
         filedesc0   1072      92      27        2950       0       8     127568        0
            socket    944      48      76        5087       0     254     117056        0
          ksiginfo    112      94     950        1854       0     126     116928        0
        malloc-256    256     327     123        6582       0      62     115200        0
        malloc-128    128     875      24        2260       0     126     115072        0
           sctp_ep   1280      53      31        2058       0     254     107520        0
        malloc-384    384      48     212        2402       0      30      99840        0
       malloc-8192   8192       8       3         138       0       1      90112        0
       malloc-4096   4096      22       0          26       0       2      90112        0
       malloc-2048   2048      12      32        1047       0       9      90112        0
          UMA Kegs    384     227       6         227       0      30      89472        0
        malloc-256    256      34     296        8149       0      62      84480        0
            clpbuf   2624       0      32          47       0      16      83968        0
       malloc-1024   1024      54      26         797       0      16      81920        0
        sctp_raddr    736      53      57         868       0     254      80960        0
        malloc-128    128     517      41        4153       0     126      71424        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-16384  16384       0       4           8       0       1      65536        0
       malloc-4096   4096      13       2          30       0       2      61440        0
             g_bio    408       0     150       29085       0      30      61200        0
        malloc-384    384     107      43        2909       0      30      57600        0
         64 Bucket    512      78      34        4171       0      30      57344        0
         malloc-64     64     584     298        2606       0     254      56448        0
         32 Bucket    256      62     133        4922       0      62      49920        0
      malloc-16384  16384       3       0           3       0       1      49152        0
        malloc-256    256       2     178        3983       0      62      46080        0
             tcpcb   1080      12      30         891       0     254      45360        0
         malloc-64     64     598      95        3191       0     254      44352        0
       malloc-8192   8192       5       0           5       0       1      40960        0
       malloc-8192   8192       5       0           5       0       1      40960        0
       malloc-2048   2048       7      13          70       0       8      40960        0
            pcpu-8      8    4714     406        5176       0     254      40960        0
         malloc-64     64     170     460       53393       0     254      40320        0
           DIRHASH   1024      34       2          34       0      16      36864        0
       malloc-4096   4096       9       0           9       0       2      36864        0
         tcp_inpcb    496      12      60         891       0     254      35712        0
             NAMEI   1024       0      32       24733       0      16      32768        0
           pcpu-64     64     490      22         490       0     254      32768        0
             Files     80     241     159       15621       0     126      32000        0
        malloc-128    128     159      89        2287       0     126      31744        0
         TURNSTILE    136     210      21         210       0      62      31416        0
        malloc-256    256      76      44        2138       0      62      30720        0
              pipe    744      25      15         461       0      16      29760        0
       malloc-4096   4096       1       6        2150       0       2      28672        0
         16 Bucket    144      68     128         642       0      62      28224        0
             KNOTE    160      24     151       76058       0      62      28000        0
     udplite_inpcb    496       0      56         481       0     254      27776        0
            da_ccb    544       0      49        7436       0      16      26656        0
       malloc-8192   8192       3       0           3       0       1      24576        0
       malloc-8192   8192       2       1           4       0       1      24576        0
       malloc-2048   2048       8       4          20       0       8      24576        0
       malloc-1024   1024      18       6          73       0      16      24576        0
            ttyinq    160     135      15         300       0      62      24000        0
          8 Bucket     80      43     257        1565       0     126      24000        0
        malloc-128    128      71     115        4128       0     126      23808        0
           ttyoutq    256      72      18         160       0      62      23040        0
       tcp_bbr_pcb    832       0      27         454       0      16      22464        0
      tcp_rack_pcb    832       7      20         240       0      16      22464        0
               PWD     32      34     596        1987       0     254      20160        0
         malloc-32     32     215     415        3369       0     254      20160        0
        sctp_chunk    152      65      65         311       0     254      19760        0
        SLEEPQUEUE     88     210      14         210       0     126      19712        0
       Mountpoints   2752       2       5          16       0       4      19264        0
        malloc-384    384      37      13          37       0      30      19200        0
        malloc-256    256      28      47         438       0      62      19200        0
      malloc-16384  16384       1       0           1       0       1      16384        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-8192   8192       1       1           3       0       1      16384        0
       malloc-2048   2048       4       4         145       0       8      16384        0
       malloc-2048   2048       4       4          13       0       8      16384        0
       malloc-1024   1024      14       2          14       0      16      16384        0
         malloc-64     64     202      50         268       0     254      16128        0
      vtnet_tx_hdr     24       0     668      647809       0     254      16032        0
         malloc-16     16     631     369        3544       0     254      16000        0
        malloc-128    128      84      40         109       0     126      15872        0
        malloc-384    384      24      16          31       0      30      15360        0
       malloc-2048   2048       3       3         159       0       8      12288        0
       malloc-1024   1024       6       6           6       0      16      12288        0
       malloc-1024   1024       7       5          37       0      16      12288        0
        malloc-512    512       5      19         270       0      30      12288        0
        malloc-512    512       8      16          33       0      30      12288        0
         malloc-64     64     118      71       20283       0     254      12096        0
         malloc-32     32     252     126         373       0     254      12096        0
         malloc-32     32     246     132         517       0     254      12096        0
          2 Bucket     32      68     310         998       0     254      12096        0
             ripcb    496       5      19          44       0     254      11904        0
         udp_inpcb    496       6      18         251       0     254      11904        0
              kenv    258      15      30        1044       0      30      11610        0
     routing nhops    256      27      18          41       0      62      11520        0
        malloc-256    256      34      11          58       0      62      11520        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-1024   1024       1       7          26       0      16       8192        0
        malloc-512    512       1      15         135       0      30       8192        0
        malloc-512    512       6      10           9       0      30       8192        0
        malloc-512    512      10       6          21       0      30       8192        0
           rtentry    176      31      15          41       0      62       8096        0
             tcptw     88       0      92           5       0     254       8096        0
              PGRP     88      34      58          82       0     126       8096        0
          rl_entry     40      89     113          89       0     254       8080        0
sctp_stream_msg_out    112      14      58         156       0     254       8064        0
        sctp_laddr     48      47     121         508       0     254       8064        0
      tcp_rack_map    112       0      72         486       0     126       8064        0
             udpcb     32       6     246         732       0     254       8064        0
              ertt     72      12     100         891       0     126       8064        0
         malloc-64     64      59      67          93       0     254       8064        0
         malloc-64     64       8     118          16       0     254       8064        0
         malloc-32     32      31     221        1499       0     254       8064        0
         malloc-32     32     136     116        5666       0     254       8064        0
         malloc-32     32      60     192        1731       0     254       8064        0
         malloc-32     32       0     252          12       0     254       8064        0
          4 Bucket     48       9     159          99       0     254       8064        0
         malloc-16     16       1     499        3637       0     254       8000        0
         malloc-16     16       6     494           7       0     254       8000        0
         malloc-16     16      24     476         573       0     254       8000        0
         malloc-16     16      41     459       26269       0     254       8000        0
         malloc-16     16       7     493         178       0     254       8000        0
         malloc-16     16     110     390        2973       0     254       8000        0
        malloc-128    128      13      49          56       0     126       7936        0
        sctp_readq    152       0      52          49       0     254       7904        0
               AIO    208       0      38          23       0      62       7904        0
           cryptop    280       0      28          42       0      30       7840        0
             AIOCB    552       0      14          27       0      16       7728        0
             unpcb    256      20      10        1313       0     254       7680        0
        malloc-384    384       0      20          46       0      30       7680        0
        malloc-256    256      15      15         287       0      62       7680        0
            AIOLIO    272       0      28          12       0      30       7616        0
     FPU_save_area    832       1       8           1       0      16       7488        0
            cpuset    104       8      54          78       0     126       6448        0
         domainset     40       0     126          53       0     254       5040        0
 epoch_record pcpu    256       4      12           4       0      62       4096        0
       malloc-4096   4096       1       0           1       0       2       4096        0
       malloc-4096   4096       0       1           2       0       2       4096        0
       malloc-2048   2048       2       0           2       0       8       4096        0
        malloc-512    512       1       7           1       0      30       4096        0
        malloc-512    512       1       7           1       0      30       4096        0
           pcpu-16     16       7     249           7       0     254       4096        0
         hostcache     64       1      62           1       0     254       4032        0
          syncache    168       0      24           4       0     254       4032        0
               ipq     56       0      72           1       0     254       4032        0
              AIOP     32       4     122           4       0     254       4032        0
       UMA Slabs 1    176       9      13           9       0      62       3872        0
        malloc-384    384       1       9           1       0      30       3840        0
        malloc-384    384       3       7           7       0      30       3840        0
            mqnode    416       3       6           3       0      30       3744        0
        KMAP ENTRY     96      15      24          20       0       0       3744        0
              vmem   1856       1       1           1       0       8       3712        0
           SMR CPU     32       3      60           3       0     254       2016        0
        SMR SHARED     24       3      60           3       0     254       1512        0
       FFS1 dinode    128       0       0           0       0     126          0        0
           ada_ccb    272       0       0           0       0      30          0        0
             swblk    136       0       0           0       0      62          0        0
          swpctrie    144       0       0           0       0      62          0        0
   sctp_asconf_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     254          0        0
           pf tags    104       0       0           0       0     126          0        0
          pf mtags     48       0       0           0       0     254          0        0
      tcp_log_node    120       0       0           0       0     126          0        0
    tcp_log_bucket    176       0       0           0       0      62          0        0
          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
    IPsec SA lft_c     16       0       0           0       0     254          0        0
            itimer    352       0       0           0       0      30          0        0
           NCLNODE    592       0       0           0       0      16          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
     LTS VFS Cache    360       0       0           0       0      30          0        0
       L VFS Cache    320       0       0           0       0      30          0        0
     STS VFS Cache    144       0       0           0       0      62          0        0
  linux_dma_object     24       0       0           0       0     254          0        0
  linux_dma_pctrie    144       0       0           0       0      62          0        0
   IOMMU_MAP_ENTRY    120       0       0           0       0     126          0        0
      ktls_session    192       0       0           0       0      62          0        0
    mbuf_jumbo_16k  16384       0       0           0       0     254          0        0
     mbuf_jumbo_9k   9216       0       0           0       0     254          0        0
      audit_record   1280       0       0           0       0       8          0        0
        MAC labels     40       0       0           0       0     254          0        0
            vnpbuf   2624       0       0           0       0      64          0        0
            mdpbuf   2624       0       0           0       0       3          0        0
           nfspbuf   2624       0       0           0       0      16          0        0
            swwbuf   2624       0       0           0       0       8          0        0
            swrbuf   2624       0       0           0       0      16          0        0
          umtx_shm     88       0       0           0       0     126          0        0
           umtx pi     96       0       0           0       0     126          0        0
rangeset pctrie nodes    144       0       0           0       0      62          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
       malloc-8192   8192       0       0           0       0       1          0        0
       malloc-1024   1024       0       0           0       0      16          0        0
        malloc-512    512       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 (14):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/08/09 04:56 freebsd-src e5018628e76a 6972b106 console log report ci-freebsd-main panic: ASan: Invalid access, 4-byte read in sctp_gather_internal_ifa_flags
2021/08/09 03:12 freebsd-src e5018628e76a 6972b106 console log report ci-freebsd-main panic: ASan: Invalid access, 4-byte read in sctp_gather_internal_ifa_flags
2021/08/04 18:15 freebsd-src e94f1a0a37fd b97d64c9 console log report ci-freebsd-main panic: ASan: Invalid access, 4-byte read in sctp_gather_internal_ifa_flags
2021/08/01 13:24 freebsd-src 60fb9e10c74c 6c236867 console log report ci-freebsd-main panic: ASan: Invalid access, 4-byte read in sctp_gather_internal_ifa_flags
2021/07/26 03:02 freebsd-src 0c47338023d4 4d1b57d4 console log report ci-freebsd-main panic: ASan: Invalid access, 4-byte read in sctp_gather_internal_ifa_flags
2021/07/13 02:36 freebsd-src 9c1c02093b90 f415556d console log report ci-freebsd-main panic: ASan: Invalid access, 4-byte read in sctp_gather_internal_ifa_flags
2021/07/11 18:16 freebsd-src 9c1c02093b90 8f5a7b8c console log report ci-freebsd-main panic: ASan: Invalid access, 4-byte read in sctp_gather_internal_ifa_flags
2021/07/10 17:43 freebsd-src 58080fbca09f 8f5a7b8c console log report ci-freebsd-main panic: ASan: Invalid access, 4-byte read in sctp_gather_internal_ifa_flags
2021/08/09 06:38 freebsd-src e5018628e76a 6972b106 console log report ci-freebsd-i386 panic: ASan: Invalid access, 4-byte read in sctp_gather_internal_ifa_flags
2021/07/17 12:30 freebsd-src be7c64704edf f115ae98 console log report ci-freebsd-i386 panic: ASan: Invalid access, 4-byte read in sctp_gather_internal_ifa_flags
2021/09/20 21:14 freebsd-src c937a405bdce af796c18 console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte read in sctp_gather_internal_ifa_flags
2021/09/02 05:35 freebsd-src d491b42535db 7eb7e152 console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte read in sctp_gather_internal_ifa_flags
2021/08/21 16:26 freebsd-src ce71a0fa99cc b599f2fc console log report ci-freebsd-main panic: ASan: Invalid access, NUM-byte read in sctp_gather_internal_ifa_flags
2021/08/21 12:02 freebsd-src c4622b01d2f1 b599f2fc console log report ci-freebsd-i386 panic: ASan: Invalid access, NUM-byte read in sctp_gather_internal_ifa_flags
* Struck through repros no longer work on HEAD.