syzbot


Fatal trap NUM: page fault in sctp_ss_default_select

Status: fixed on 2021/09/29 10:05
Reported-by: syzbot+bbf739922346659df4b2@syzkaller.appspotmail.com
Fix commit: 5b53e749a95e sctp: fix usage of stream scheduler functions
First crash: 499d, last: 495d

Sample crash report:
Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address	= 0xffffffffffffffff
fault code		= supervisor read data, page not present
instruction pointer	= 0x20:0xffffffff84b21c92
stack pointer	        = 0x28:0xfffffe00a5e5ff00
frame pointer	        = 0x28:0xfffffe00a5e5ff30
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= 

FreeBSD/amd64interrupt enabled, resume, IOPL = 0
current process		= 925 (syz-executor.2)
trap number		= 12
panic: page fault
cpuid = 1
time = 1632859968
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe00a5e5f710
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe00a5e5f870
vpanic() at vpanic+0x2c5/frame 0xfffffe00a5e5f950
panic() at panic+0xb5/frame 0xfffffe00a5e5fa10
trap_fatal() at trap_fatal+0x6a4/frame 0xfffffe00a5e5fb10
trap_pfault() at trap_pfault+0x186/frame 0xfffffe00a5e5fc50
trap() at trap+0x5e7/frame 0xfffffe00a5e5fe30
calltrap() at calltrap+0x8/frame 0xfffffe00a5e5fe30
--- trap 0xc, rip = 0xffffffff84b21c92, rsp = 0xfffffe00a5e5ff00, rbp = 0xfffffe00a5e5ff30 ---
sctp_ss_default_select() at sctp_ss_default_select+0x112/frame 0xfffffe00a5e5ff30
sctp_med_chunk_output() at sctp_med_chunk_output+0x190c/frame 0xfffffe00a5e60ae0
sctp_chunk_output() at sctp_chunk_output+0x2b25/frame 0xfffffe00a5e61740
sctp_inpcb_free() at sctp_inpcb_free+0xbcc/frame 0xfffffe00a5e617d0
sctp_close() at sctp_close+0x1fb/frame 0xfffffe00a5e618b0
soclose() at soclose+0x3fe/frame 0xfffffe00a5e619c0
_fdrop() at _fdrop+0x58/frame 0xfffffe00a5e619f0
closef() at closef+0x686/frame 0xfffffe00a5e61bd0
closefp_impl() at closefp_impl+0xd9/frame 0xfffffe00a5e61c10
kern_dup() at kern_dup+0xb6d/frame 0xfffffe00a5e61d30
amd64_syscall() at amd64_syscall+0x425/frame 0xfffffe00a5e61f30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00a5e61f30
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x289e4a, rsp = 0x7fffdfffdf08, rbp = 0x7fffdfffdf70 ---
KDB: enter: panic
[ thread pid 925 tid 100220 ]
Stopped at      kdb_enter+0x6b: movq    $0,0x28e03da(%rip)
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         0x96926f8153805a20
rdx                    0x3ffff
rbx                          0
rsp         0xfffffe00a5e5f850
rbp         0xfffffe00a5e5f870
rsi                    0x40001
rdi         0xffffffff817bc96a  vprintf+0x35a
r8                           0
r9          0xfffffe00a5e5f388
r10                          0
r11         0xfffffe009eaef6f0
r12         0xfffffe009eaef1e0
r13         0xfffffe00a5e5f801
r14         0xffffffff82c7fe60  .str.18
r15         0xffffffff82c7fe60  .str.18
rip         0xffffffff817b02db  kdb_enter+0x6b
rflags                    0x46
kdb_enter+0x6b: movq    $0,0x28e03da(%rip)
db> show proc
Process 925 (syz-executor.2) at 0xfffffe00588c4000:
 state: NORMAL
 uid: 0  gids: 0, 0, 5
 parent: pid 791 at 0xfffffe009e4e6538
 ABI: FreeBSD ELF64
 flag: 0x10000080  flag2: 0
 arguments: /root/syz-executor.2
 reaper: 0xfffffe0053d60538 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffffe009ea52000
   (map 0xfffffe009ea52000)
   (map.pmap 0xfffffe009ea520c0)
   (pmap 0xfffffe009ea52120)
 threads: 3
100094                   RunQ                                syz-executor.2
100220                   Run     CPU 1                       syz-executor.2
100225                   S       uwait   0xfffffe009ea69500  syz-executor.2
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
  928   796   796     0  R       (threaded)                  syz-executor.3
100132                   RunQ                                syz-executor.3
100231                   L      *sctp-in 0xfffffe0058786540  syz-executor.3
  927   782   782     0  R       (threaded)                  syz-executor.0
100096                   RunQ                                syz-executor.0
100226                   L      *sctp-in 0xfffffe0058786540  syz-executor.0
100227                   L      *sctp-in 0xfffffe0058786540  syz-executor.0
100228                   S       uwait   0xfffffe0058785180  syz-executor.0
  925   791   791     0  R       (threaded)                  syz-executor.2
100094                   RunQ                                syz-executor.2
100220                   Run     CPU 1                       syz-executor.2
100225                   S       uwait   0xfffffe009ea69500  syz-executor.2
  922   783   783     0  R       (threaded)                  syz-executor.1
100108                   RunQ                                syz-executor.1
100222                   L      *sctp-in 0xfffffe0058786540  syz-executor.1
100229                   L      *sctp-in 0xfffffe0058786540  syz-executor.1
100230                   S       uwait   0xfffffe009e4ec400  syz-executor.1
  880     1   880     0  Ss      select  0xfffffe009e9f4140  rtsol
  877     1   877     0  Ss      select  0xfffffe009e9f4240  rtsol
  876     1   876     0  Ss      select  0xfffffe009e9f42c0  rtsol
  873   792   436     0  S       kqread  0xfffffe0058b35200  rtsol
  796   780   796     0  Rs                                  syz-executor.3
  792   785   436     0  S       wait    0xfffffe0058b25a70  sh
  791   780   791     0  Rs      CPU 0                       syz-executor.2
  785   436   436     0  S       wait    0xfffffe009e52d538  sh
  783   780   783     0  Rs                                  syz-executor.1
  782   780   782     0  Rs                                  syz-executor.0
  780   778   778     0  S       (threaded)                  syz-fuzzer
100109                   S       uwait   0xfffffe0058949a00  syz-fuzzer
100122                   S       uwait   0xfffffe00575e1000  syz-fuzzer
100123                   S       uwait   0xfffffe00575e1100  syz-fuzzer
100124                   S       uwait   0xfffffe00575e1200  syz-fuzzer
100125                   S       kqread  0xfffffe009e4aeb00  syz-fuzzer
100126                   S       uwait   0xfffffe00575e1400  syz-fuzzer
100127                   S       uwait   0xfffffe009e4ec780  syz-fuzzer
100128                   S       uwait   0xfffffe0058949000  syz-fuzzer
  778   776   778     0  Ss      pause   0xfffffe009e46cb20  csh
  776   694   776     0  Ss      select  0xfffffe0058b16040  sshd
  760     1   760     0  Ss+     ttyin   0xfffffe0057014cb0  getty
  759     1   759     0  Ss+     ttyin   0xfffffe00575f94b0  getty
  758     1   758     0  Ss+     ttyin   0xfffffe00575f9cb0  getty
  757     1   757     0  Ss+     ttyin   0xfffffe00575f64b0  getty
  756     1   756     0  Ss+     ttyin   0xfffffe00575f6cb0  getty
  755     1   755     0  Ss+     ttyin   0xfffffe00575f24b0  getty
  754     1   754     0  Ss+     ttyin   0xfffffe00575f2cb0  getty
  753     1   753     0  Ss+     ttyin   0xfffffe00575ed4b0  getty
  752     1   752     0  Ss+     ttyin   0xfffffe00575edcb0  getty
  698     1   698     0  Ss      nanslp  0xffffffff8405d5c0  cron
  694     1   694     0  Ss      select  0xfffffe0058b163c0  sshd
  507     1   507     0  Ds      biowr   0xfffffe0007952280  syslogd
  436     1   436     0  Ss      wait    0xfffffe0058b47538  devd
  435     1   435    65  Ss      select  0xfffffe0058b16cc0  dhclient
  350     1   350     0  Ss      select  0xfffffe0058b16ac0  dhclient
  347     1   347     0  Ss      select  0xfffffe0058b16dc0  dhclient
   23     0     0     0  DL      syncer  0xffffffff84185960  [syncer]
   22     0     0     0  DL      vlruwt  0xfffffe005877da70  [vnlru]
   21     0     0     0  DL      (threaded)                  [bufdaemon]
100085                   D       qsleep  0xffffffff84183660  [bufdaemon]
100088                   D       -       0xffffffff83411f80  [bufspacedaemon-0]
100100                   D       sdflush 0xfffffe0058844ce8  [/ worker]
   20     0     0     0  DL      psleep  0xffffffff841bbb80  [vmdaemon]
   19     0     0     0  DL      (threaded)                  [pagedaemon]
100083                   D       psleep  0xffffffff841af6b8  [dom0]
100089                   D       launds  0xffffffff841af6c4  [laundry: dom0]
100090                   D       umarcl  0xffffffff81eb2b10  [uma]
   18     0     0     0  DL      -       0xffffffff83e13ca0  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff84baf5a0  [sctp_iterator]
   16     0     0     0  DL      pftm    0xffffffff848a51a0  [pf purge]
   15     0     0     0  DL      -       0xffffffff8417e880  [soaiod4]
    9     0     0     0  DL      -       0xffffffff8417e880  [soaiod3]
    8     0     0     0  DL      -       0xffffffff8417e880  [soaiod2]
    7     0     0     0  DL      -       0xffffffff8417e880  [soaiod1]
    6     0     0     0  DL      (threaded)                  [cam]
100048                   D       -       0xffffffff83c99540  [doneq0]
100049                   D       -       0xffffffff83c994c0  [async]
100082                   D       -       0xffffffff83c99340  [scanner]
   14     0     0     0  DL      seqstat 0xfffffe0056ac8c88  [sequencer 00]
    5     0     0     0  DL      crypto_ 0xfffffe00541c9d80  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffffe00541c9d30  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff841a9760  [crypto]
   13     0     0     0  DL      (threaded)                  [geom]
100039                   D       -       0xffffffff84030b80  [g_event]
100040                   D       -       0xffffffff84030bc0  [g_up]
100041                   D       -       0xffffffff84030c00  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100029                   D       -       0xfffffe00081f6d00  [thr_0]
100030                   D       -       0xfffffe00081f6d80  [thr_1]
100031                   D       -       0xffffffff8417fc08  [alloc_0]
   12     0     0     0  WL      (threaded)                  [intr]
100011                   I                                   [swi6: task queue]
100012                   I                                   [swi6: Giant taskq]
100014                   I                                   [swi5: fast taskq]
100032                   I                                   [swi1: netisr 0]
100033                   I                                   [swi3: vm]
100034                   I                                   [swi4: clock (0)]
100035                   I                                   [swi4: clock (1)]
100036                   I                                   [swi1: hpts]
100037                   I                                   [swi1: hpts]
100050                   I                                   [irq24: virtio_pci0]
100051                   I                                   [irq25: virtio_pci0]
100052                   I                                   [irq26: virtio_pci0]
100053                   I                                   [irq27: virtio_pci0]
100054                   I                                   [irq28: virtio_pci1]
100055                   I                                   [irq29: virtio_pci1]
100056                   I                                   [irq30: virtio_pci1]
100057                   I                                   [irq31: virtio_pci1]
100058                   I                                   [irq32: virtio_pci1]
100063                   I                                   [irq10: virtio_pci2]
100065                   I                                   [irq1: atkbd0]
100066                   I                                   [irq12: psm0]
100067                   I                                   [swi0: uart uart++]
100075                   I                                   [swi1: pf send]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffffe0053d60538  [init]
   10     0     0     0  DL      audit_w 0xffffffff841aa700  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff84031a80  [swapper]
100005                   D       -       0xfffffe00081f8900  [softirq_0]
100006                   D       -       0xfffffe00081f8700  [softirq_1]
100007                   D       -       0xfffffe00081f8500  [if_io_tqg_0]
100008                   D       -       0xfffffe00081f8300  [if_io_tqg_1]
100009                   D       -       0xfffffe00081f8100  [if_config_tqg_0]
100010                   D       -       0xfffffe0053dfce00  [deferred_unmount ta]
100013                   D       -       0xfffffe0053dfc800  [thread taskq]
100015                   D       -       0xfffffe0053dfc400  [linuxkpi_irq_wq]
100016                   D       -       0xfffffe0053dfc200  [kqueue_ctx taskq]
100017                   D       -       0xfffffe0053dfc000  [pci_hp taskq]
100018                   D       -       0xfffffe0053e06d00  [aiod_kick taskq]
100019                   D       -       0xfffffe0053e06b00  [inm_free taskq]
100020                   D       -       0xfffffe0053e06900  [in6m_free taskq]
100021                   D       -       0xfffffe0053e06700  [linuxkpi_short_wq_0]
100022                   D       -       0xfffffe0053e06700  [linuxkpi_short_wq_1]
100023                   D       -       0xfffffe0053e06700  [linuxkpi_short_wq_2]
100024                   D       -       0xfffffe0053e06700  [linuxkpi_short_wq_3]
100025                   D       -       0xfffffe0053e06200  [linuxkpi_long_wq_0]
100026                   D       -       0xfffffe0053e06200  [linuxkpi_long_wq_1]
100027                   D       -       0xfffffe0053e06200  [linuxkpi_long_wq_2]
100028                   D       -       0xfffffe0053e06200  [linuxkpi_long_wq_3]
100038                   D       -       0xfffffe0053e14200  [firmware taskq]
100042                   D       -       0xfffffe005419ec00  [crypto_0]
100043                   D       -       0xfffffe005419ec00  [crypto_1]
100059                   D       -       0xfffffe0056ec3b00  [vtnet0 rxq 0]
100060                   D       -       0xfffffe0056ec3a00  [vtnet0 txq 0]
100061                   D       -       0xfffffe0056ec3900  [vtnet0 rxq 1]
100062                   D       -       0xfffffe0056ec3800  [vtnet0 txq 1]
100064                   D       vtbslp  0xfffffe0056ff6600  [virtio_balloon]
100068                   D       -       0xfffffe0057027800  [mca taskq]
100073                   D       -       0xffffffff82c86de0  [deadlkres]
100077                   D       -       0xfffffe0057415a00  [acpi_task_0]
100078                   D       -       0xfffffe0057415a00  [acpi_task_1]
100079                   D       -       0xfffffe0057415a00  [acpi_task_2]
100081                   D       -       0xfffffe005419e400  [CAM taskq]
db> show all locks
Process 925 (syz-executor.2) thread 0xfffffe009eaef1e0 (100220)
exclusive sleep mutex sctp-tcb (tcb) r = 0 (0xfffffe009eae51a0) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3355
exclusive sleep mutex sctp-inp (inp) r = 0 (0xfffffe009eaf6460) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3322
exclusive rw sctp-info (sctp-info) r = 0 (0xfffffe00081ba7c0) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3321
exclusive sleep mutex sctp-create (inp_create) r = 0 (0xfffffe009eaf6480) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3320
Process 507 (syslogd) thread 0xfffffe0058946900 (100105)
exclusive lockmgr bufwait (bufwait) r = 0 (0xfffffe0007952300) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_bio.c:3937
exclusive lockmgr ufs (ufs) r = 0 (0xfffffe009e490770) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_syscalls.c:3543
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
            devbuf         4213         4323K         4241
          tcp_hpts            6         3201K            6
         sysctloid        35175         2072K        35246
             vtbuf           24         1968K           46
              kobj          326         1304K          483
            newblk          679         1194K          793
          vfscache            3         1025K            3
               pcb           42          553K          251
          inodedep           78          541K          142
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          121          252K          993
            acpica         1674          184K        55237
         vnet_data            1          168K            1
              vmem            3          146K            4
           tidhash            3          141K            3
            linker          355          140K          383
          filedesc           18          137K          169
           pagedep           15          132K           80
        tfo_ccache            1          128K            1
            DEVFS1          108          108K          125
               sem            4          106K            4
               bus          986           80K         3474
          mtx_pool            2           72K            2
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          509           64K          509
              umtx          330           42K          330
           kdtrace          205           41K         1161
              temp           34           33K         1892
         hostcache            1           32K            1
               shm            1           32K            1
            DEVFS3          127           32K          137
               msg            4           30K            4
        gtaskqueue           18           26K           18
            kbdmux            6           22K            6
        DEVFS_RULE           56           20K           56
            ifaddr           66           19K           68
               BPF           14           19K           14
         ufs_mount            4           17K            5
              proc            3           17K            3
               tty           16           16K           16
          routetbl          126           16K          406
           ithread           99           16K           99
            bus-sc           34           15K         1691
           lltable           43           14K           43
            dirrem           50           13K           78
            KTRACE          100           13K          100
             ifnet            7           13K            7
       ether_multi          152           13K          162
              kenv           95           12K           95
      eventhandler          133           12K          133
         CAM queue            5           11K         1528
              GEOM           61           10K          487
              rman           84           10K          425
         in6_multi           65            9K           65
         bmsafemap            2            9K          111
              UART           12            9K           12
           devstat            4            9K            4
            kqueue           61            9K          935
              ksem            1            8K            1
               rpc            2            8K            2
             shmfd            1            8K            1
       pfs_vncache            1            8K            1
         pfs_nodes           20            8K           20
     audit_evclass          237            8K          295
         sctp_timw           28            7K           28
         taskqueue           63            7K           63
          freefile           50            7K           76
            sglist            5            7K            5
           CAM DEV            3            6K          510
              cred           23            6K          196
            plimit           20            5K          334
       ufs_dirhash           24            5K           24
            DEVFSP           72            5K           80
               UMA          270            5K          270
          pf_ifnet           10            5K           19
                vt           11            5K           11
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
          kcovinfo           64            4K           68
         sctp_atcl           10            4K          139
           pwddesc           57            4K          929
           acpisem           28            4K           28
             hhook           15            4K           17
           session           26            4K           36
         sctp_stro            3            3K           56
            diradd           22            3K          109
          terminal           11            3K           11
         proc-args           46            3K          555
             mkdir           20            3K          140
          indirdep           10            3K           10
           uidinfo            3            3K            7
        local_apic            1            2K            1
           io_apic            1            2K            1
       fpukern_ctx            2            2K            2
         ipsec-saq            2            2K            2
            ip6ndp           12            2K           14
             selfd           27            2K        20960
          sctp_ifa           13            2K           14
            Unitno           27            2K           47
           CAM XPT           22            2K          543
             lockf           15            2K           22
         newdirblk           12            2K           70
          in_multi            6            2K            8
            select           11            2K           32
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
               msi            9            2K            9
             clone            9            2K            9
               tun            7            2K            7
           softdep            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
             nhops            6            1K            8
       vnodemarker            2            1K           14
      NFSD session            1            1K            1
        CAM periph            4            1K          271
             ipsec            3            1K            3
          sctp_ifn            6            1K           14
               mld            6            1K            6
              igmp            6            1K            6
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           89
          pci_link           10            1K           10
            crypto            4            1K            4
 encap_export_host           12            1K           12
         sctp_atky           13            1K          195
       inpcbpolicy           16            1K          212
              pfil            4            1K            4
          procdesc            4            1K           10
              cdev            2            1K            2
               osd            8            1K           21
    chacha20random            1            1K            1
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
            vnodes            1            1K            1
           CAM SIM            2            1K            2
              ktls            1            1K            1
            feeder            7            1K            7
           tcpfunc            3            1K            3
        loginclass            3            1K            6
            prison            6            1K            6
       lkpikmalloc            5            1K            6
         sctp_athm           10            1K          139
        aesni_data            2            1K            2
          nexusdev            8            1K            8
            apmdev            1            1K            1
          atkbddev            2            1K            2
     CAM dev queue            2            1K            2
             xform            2            1K           42
 CAM I/O Scheduler            1            1K            1
          CAM path            4            1K         1034
          pmchooks            1            1K            1
            soname            4            1K         3515
          sctp_map            6            1K          112
          sctp_vrf            1            1K            1
              vnet            1            1K            1
           entropy            2            1K           38
          acpiintr            1            1K            1
               pmc            1            1K            1
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          freework            1            1K           76
          p1003.1b            1            1K            1
          filecaps            1            1K           78
          cdg data            0            0K            0
        dctcp data            0            0K            0
         htcp data            0            0K            0
        sctp_mcore            0            0K            0
        sctp_socko            0            0K           71
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8320     979      553942       0     254   38088704        0
              pbuf   2624       0     973           0       0       2    2553152        0
              mbuf    256    8789     781      831852       0     254    2449920        0
          BUF TRIE    144     190   11570         580       0      62    1693440        0
        malloc-384    384    4246      14        4311       0      30    1635840        0
       malloc-4096   4096     385       3        1429       0       2    1589248        0
        malloc-128    128   11831      42       11902       0     126    1519744        0
        RADIX NODE    144    9195     152       44569       0      62    1345968        0
       UMA Slabs 0    112   10167      18       10167       0     126    1140720        0
         vmem btag     56   15752      63       15752       0     254     885640        0
         FFS inode   1160     503      22         579       0       8     609000        0
      malloc-65536  65536       6       0           6       0       1     393216        0
            lkpimm    168       1    2327           1       0      62     391104        0
          lkpicurr    168       2    2326           2       0      62     391104        0
         VM OBJECT    264    1137      63       14885       0      30     316800        0
            THREAD   1808     147      18         231       0       8     298320        0
         malloc-64     64    4477      59        6423       0     254     290304        0
        malloc-256    256    1045      50        2104       0      62     280320        0
        256 Bucket   2048     123      11       14377       0       8     274432        0
             VNODE    448     540      72         618       0      30     274176        0
         malloc-16     16   14755     245       16143       0     254     240000        0
            DEVCTL   1024      22     198         150       0       0     225280        0
      malloc-65536  65536       1       2          65       0       1     196608        0
      malloc-65536  65536       1       2         137       0       1     196608        0
      malloc-16384  16384       8       4          82       0       1     196608        0
         UMA Zones    768     242       2         242       0      16     187392        0
         malloc-32     32    5598     198        6381       0     254     185472        0
        malloc-128    128    1221      50       25921       0     126     162688        0
      mbuf_cluster   2048      75       1          75       0     254     155648        0
         MAP ENTRY     96    1420     176       45751       0     126     153216        0
        malloc-128    128    1064      52        5336       0     126     142848        0
     FPU_save_area    832     149      22        2658       0      16     142272        0
       malloc-1024   1024     133       3         150       0      16     139264        0
      malloc-65536  65536       0       2           8       0       1     131072        0
       FFS2 dinode    256     503       7         579       0      62     130560        0
       S VFS Cache    104    1004     127        1094       0     126     117624        0
          ksiginfo    112      48     996        2482       0     126     116928        0
           VMSPACE   2544      34       8         907       0       4     106848        0
      malloc-32768  32768       1       2         131       0       1      98304        0
          UMA Kegs    384     227       6         227       0      30      89472        0
              PROC   1336      56       7         928       0       8      84168        0
            clpbuf   2624       0      32          24       0      16      83968        0
       malloc-8192   8192       9       1         110       0       1      81920        0
       malloc-8192   8192       8       2          10       0       1      81920        0
         filedesc0   1072      57       6         929       0       8      67536        0
      malloc-65536  65536       1       0           1       0       1      65536        0
             g_bio    408       4     156        5050       0      30      65280        0
       malloc-4096   4096      14       1          27       0       2      61440        0
       malloc-2048   2048      13      17         578       0       8      61440        0
        128 Bucket   1024      42      17         660       0      16      60416        0
            socket    960      43      17        1531       0     254      57600        0
       malloc-2048   2048      15      13          91       0       8      57344        0
      malloc-16384  16384       3       0           3       0       1      49152        0
      malloc-16384  16384       2       1          17       0       1      49152        0
      malloc-16384  16384       1       2         161       0       1      49152        0
       malloc-8192   8192       4       2          32       0       1      49152        0
       malloc-2048   2048       2      22         575       0       8      49152        0
         sctp_asoc   2288       3      17          56       0     254      45760        0
       malloc-1024   1024      10      34        1562       0      16      45056        0
         64 Bucket    512      58      30        2404       0      30      45056        0
         malloc-64     64     517     176        1629       0     254      44352        0
            pcpu-8      8    4641     479        4861       0     254      40960        0
        malloc-128    128      61     249         323       0     126      39680        0
         32 Bucket    256      47     103        5030       0      62      38400        0
           DIRHASH   1024      34       2          34       0      16      36864        0
             NAMEI   1024       0      36       13463       0      16      36864        0
       malloc-4096   4096       8       1          10       0       2      36864        0
        malloc-256    256     103      32         362       0      62      34560        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-64     64     100     404        1528       0     254      32256        0
        malloc-384    384      67      13         114       0      30      30720        0
        malloc-384    384      40      40         169       0      30      30720        0
       malloc-4096   4096       4       3           7       0       2      28672        0
         malloc-64     64      72     369       34719       0     254      28224        0
            da_ccb    544       1      48        1387       0      16      26656        0
         TURNSTILE    136     166      23         166       0      62      25704        0
        sctp_raddr    736       3      30          56       0     254      24288        0
    ertt_txseginfo     40       0     606        2549       0     254      24240        0
             KNOTE    160      31     119       24824       0      62      24000        0
            ttyinq    160     135      15         300       0      62      24000        0
          8 Bucket     80      43     257         872       0     126      24000        0
           ttyoutq    256      72      18         160       0      62      23040        0
        malloc-384    384      53       7          55       0      30      23040        0
        malloc-256    256      77      13         435       0      62      23040        0
           sctp_ep   1272       7      11          83       0     254      22896        0
              pipe    744      19      11         335       0      16      22320        0
       malloc-4096   4096       5       0           5       0       2      20480        0
       malloc-4096   4096       3       2         880       0       2      20480        0
       malloc-2048   2048       2       8          30       0       8      20480        0
       malloc-1024   1024       4      16          57       0      16      20480        0
         malloc-64     64     224      91         280       0     254      20160        0
             Files     80     205      45        7504       0     126      20000        0
       Mountpoints   2752       2       5           2       0       4      19264        0
       mbuf_packet    256       2      73         321       0     254      19200        0
        malloc-256    256      66       9         471       0      62      19200        0
        malloc-256    256      53      22         454       0      62      19200        0
        malloc-256    256      46      29         120       0      62      19200        0
        SLEEPQUEUE     88     166      26         166       0     126      16896        0
      malloc-16384  16384       1       0           1       0       1      16384        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-1024   1024       8       8          12       0      16      16384        0
        malloc-512    512       0      32         131       0      30      16384        0
         malloc-64     64     166      86         199       0     254      16128        0
         malloc-32     32      88     416         677       0     254      16128        0
         16 Bucket    144      46      66         335       0      62      16128        0
        malloc-128    128     100      24         213       0     126      15872        0
        malloc-128    128      82      42         256       0     126      15872        0
        sctp_chunk    152      80      24          80       0     254      15808        0
        malloc-384    384      22      18         362       0      30      15360        0
        malloc-256    256      25      35         184       0      62      15360        0
             tcpcb   1080       4      10          10       0     254      15120        0
       malloc-2048   2048       3       3          11       0       8      12288        0
       malloc-2048   2048       3       3         194       0       8      12288        0
       malloc-2048   2048       2       4           4       0       8      12288        0
       malloc-1024   1024       8       4         183       0      16      12288        0
       malloc-1024   1024       7       5           7       0      16      12288        0
         malloc-32     32      89     289        4103       0     254      12096        0
         udp_inpcb    496       8      16         171       0     254      11904        0
        malloc-128    128      55      38         307       0     126      11904        0
              kenv    258      15      30        1026       0      30      11610        0
     routing nhops    256      26      19          33       0      62      11520        0
             unpcb    256      14      31        1205       0     254      11520        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-4096   4096       0       2           3       0       2       8192        0
       malloc-2048   2048       3       1           3       0       8       8192        0
       malloc-1024   1024       2       6          11       0      16       8192        0
       malloc-1024   1024       1       7           2       0      16       8192        0
        malloc-512    512       4      12           4       0      30       8192        0
        malloc-512    512       5      11          76       0      30       8192        0
        malloc-512    512       8       8           8       0      30       8192        0
           rtentry    176      29      17          33       0      62       8096        0
              PGRP     88      26      66          36       0     126       8096        0
          rl_entry     40      37     165          37       0     254       8080        0
        sctp_laddr     48       0     168          24       0     254       8064        0
             udpcb     32       8     244         195       0     254       8064        0
              ertt     72       4     108          10       0     126       8064        0
               PWD     32      18     234         158       0     254       8064        0
         malloc-64     64      55      71         377       0     254       8064        0
         malloc-64     64      62      64         125       0     254       8064        0
         malloc-32     32     120     132         279       0     254       8064        0
         malloc-32     32      56     196          75       0     254       8064        0
         malloc-32     32      45     207         213       0     254       8064        0
         malloc-32     32      54     198         223       0     254       8064        0
         malloc-32     32      17     235          30       0     254       8064        0
          4 Bucket     48       6     162          55       0     254       8064        0
          2 Bucket     32      52     200         541       0     254       8064        0
      vtnet_tx_hdr     24       0     334      273518       0     254       8016        0
         malloc-16     16       0     500           7       0     254       8000        0
         malloc-16     16      25     475         127       0     254       8000        0
         malloc-16     16      56     444         288       0     254       8000        0
         malloc-16     16      24     476         178       0     254       8000        0
         malloc-16     16      39     461         176       0     254       8000        0
         malloc-16     16     286     214       25355       0     254       8000        0
         malloc-16     16       4     496          42       0     254       8000        0
             ripcb    496       4      12           7       0     254       7936        0
     udplite_inpcb    496       0      16          24       0     254       7936        0
         tcp_inpcb    496       4      12          10       0     254       7936        0
        malloc-128    128      36      26          51       0     126       7936        0
        malloc-256    256      13      17         559       0      62       7680        0
            cpuset    104       8      54           8       0     126       6448        0
 epoch_record pcpu    256       4      12           4       0      62       4096        0
       malloc-4096   4096       0       1           1       0       2       4096        0
        malloc-512    512       0       8           1       0      30       4096        0
        malloc-512    512       5       3           5       0      30       4096        0
        malloc-512    512       0       8           1       0      30       4096        0
           pcpu-16     16       7     249           7       0     254       4096        0
sctp_stream_msg_out    112       0      36           4       0     254       4032        0
         hostcache     64       1      62           1       0     254       4032        0
          syncache    168       0      24           4       0     254       4032        0
       UMA Slabs 1    176       9      13           9       0      62       3872        0
        malloc-384    384       0      10           1       0      30       3840        0
        malloc-384    384       2       8           2       0      30       3840        0
        malloc-384    384       1       9           1       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
           ada_ccb    272       0       0           0       0      30          0        0
             swblk    136       0       0           0       0      62          0        0
          swpctrie    144       0       0           0       0      62          0        0
   cdg_qdiffsample     16       0       0           0       0     254          0        0
   sctp_asconf_ack     48       0       0           0       0     254          0        0
       sctp_asconf     40       0       0           0       0     254          0        0
        sctp_readq    152       0       0           0       0     254          0        0
   pf state scrubs     40       0       0           0       0     254          0        0
   pf frag entries     40       0       0           0       0     254          0        0
          pf frags    248       0       0           0       0      62          0        0
  pf table entries    160       0       0           0       0      62          0        0
pf table entry counters     64       0       0           0       0     254          0        0
   pf source nodes    136       0       0           0       0     254          0        0
     pf state keys     88       0       0           0       0     126          0        0
         pf states    312       0       0           0       0     254          0        0
           pf tags    104       0       0           0       0     126          0        0
          pf mtags     48       0       0           0       0     254          0        0
      tcp_rack_pcb    832       0       0           0       0      16          0        0
      tcp_rack_map    112       0       0           0       0     126          0        0
       tcp_bbr_pcb    832       0       0           0       0      16          0        0
       tcp_bbr_map    128       0       0           0       0     126          0        0
      tcp_log_node    120       0       0           0       0     126          0        0
    tcp_log_bucket    176       0       0           0       0      62          0        0
           tcp_log    416       0       0           0       0     254          0        0
          tcpreass     48       0       0           0       0     254          0        0
tfo_ccache_entries     80       0       0           0       0     126          0        0
               tfo      4       0       0           0       0     254          0        0
          sackhole     32       0       0           0       0     254          0        0
             tcptw     88       0       0           0       0     254          0        0
               ipq     56       0       0           0       0     254          0        0
    IPsec SA lft_c     16       0       0           0       0     254          0        0
            itimer    352       0       0           0       0      30          0        0
            AIOLIO    272       0       0           0       0      30          0        0
             AIOCB    552       0       0           0       0      16          0        0
              AIOP     32       0       0           0       0     254          0        0
               AIO    208       0       0           0       0      62          0        0
        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    592       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
         domainset     40       0       0           0       0     254          0        0
        MAC labels     40       0       0           0       0     254          0        0
            vnpbuf   2624       0       0           0       0      64          0        0
            mdpbuf   2624       0       0           0       0       3          0        0
           nfspbuf   2624       0       0           0       0      16          0        0
            swwbuf   2624       0       0           0       0       8          0        0
            swrbuf   2624       0       0           0       0      16          0        0
          umtx_shm     88       0       0           0       0     126          0        0
           umtx pi     96       0       0           0       0     126          0        0
rangeset pctrie nodes    144       0       0           0       0      62          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-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-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 (20939):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-freebsd-main 2021/09/28 20:13 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-main 2021/09/25 16:01 freebsd-src f766826fe3b8 8cac236e console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 09:51 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 09:36 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 09:23 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 09:10 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 08:58 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 08:46 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 08:32 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 08:21 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 08:06 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 07:55 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 07:43 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 07:28 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 07:16 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 07:02 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 06:50 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 06:38 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 06:24 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 06:12 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 06:01 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 05:48 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 05:36 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 05:24 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 05:12 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 05:01 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 04:48 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 04:37 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 04:26 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 04:14 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 04:03 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 03:52 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 03:40 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 03:26 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 03:14 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 03:01 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 02:50 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 02:39 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 02:28 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 02:16 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 02:04 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 01:53 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 01:43 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
ci-freebsd-i386 2021/09/29 01:31 freebsd-src f3aa0098a82e d82cb927 console log report Fatal trap NUM: page fault in sctp_ss_default_select
* Struck through repros no longer work on HEAD.