syzbot


Fatal trap NUM: page fault in sctp_wakeup_the_read_socket (3)

Status: fixed on 2022/04/27 23:43
Reported-by: syzbot+f475e054c454310bc26d@syzkaller.appspotmail.com
Fix commit: 490a0f77de77 sctp: improve locking
First crash: 291d, last: 285d
similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
freebsd Fatal trap NUM: page fault in sctp_wakeup_the_read_socket 2 487d 503d 0/2 auto-closed as invalid on 2022/01/04 16:49
freebsd Fatal trap NUM: page fault in sctp_wakeup_the_read_socket (2) 1 369d 369d 2/2 fixed on 2022/04/17 04:48
freebsd Fatal trap NUM: page fault in sctp_wakeup_the_read_socket (4) 1 284d 284d 0/2 auto-closed as invalid on 2022/07/27 07:06

Sample crash report:
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address	= 0x1c0
fault code		= supervisor read data, page not present
instruction pointer	= 0x20:0xffffffff84ac00a8
stack pointer	        = 0x28:0xfffffe0053b23fa0
frame pointer	        = 0x28:0xfffffe0053b23fd0
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 12 (swi1: netisr 0)
trap number		= 12
panic: page fault
cpuid = 0
time = 1650983691
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe0053b237b0
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe0053b23910
vpanic() at vpanic+0x2b8/frame 0xfffffe0053b239f0
panic() at panic+0xb5/frame 0xfffffe0053b23ab0
trap_fatal() at trap_fatal+0x6a4/frame 0xfffffe0053b23bb0
trap_pfault() at trap_pfault+0x186/frame 0xfffffe0053b23cf0
trap() at trap+0x5ad/frame 0xfffffe0053b23ed0
calltrap() at calltrap+0x8/frame 0xfffffe0053b23ed0
--- trap 0xc, rip = 0xffffffff84ac00a8, rsp = 0xfffffe0053b23fa0, rbp = 0xfffffe0053b23fd0 ---
sctp_wakeup_the_read_socket() at sctp_wakeup_the_read_socket+0xf8/frame 0xfffffe0053b23fd0
sctp_deliver_reasm_check() at sctp_deliver_reasm_check+0x22bf/frame 0xfffffe0053b24110
sctp_process_data() at sctp_process_data+0x32d8/frame 0xfffffe0053b24800
sctp_common_input_processing() at sctp_common_input_processing+0x168d/frame 0xfffffe0053b24a20
sctp_input_with_port() at sctp_input_with_port+0x57d/frame 0xfffffe0053b24bb0
sctp_input() at sctp_input+0x32/frame 0xfffffe0053b24bd0
ip_input() at ip_input+0x80e/frame 0xfffffe0053b24cf0
swi_net() at swi_net+0x2f0/frame 0xfffffe0053b24d90
ithread_loop() at ithread_loop+0x4f1/frame 0xfffffe0053b24ef0
fork_exit() at fork_exit+0xd0/frame 0xfffffe0053b24f30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0053b24f30
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 12 tid 100031 ]
Stopped at      kdb_enter+0x6b: movq    $0,0x270547a(%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         0x9f999501baf0665c
rdx         0xdffff7c000000000
rbx                          0
rsp         0xfffffe0053b238f0
rbp         0xfffffe0053b23910
rsi                        0x1
rdi                          0
r8                         0x3
r9                  0xffffffff
r10                          0
r11                          0
r12         0xfffffe0053ea8560
r13         0xfffffe0053b23901
r14         0xffffffff82bc8920  .str.26
r15         0xffffffff82bc8920  .str.26
rip         0xffffffff81774f1b  kdb_enter+0x6b
rflags                    0x46
kdb_enter+0x6b: movq    $0,0x270547a(%rip)
db> show proc
Process 12 (intr) at 0xfffffe0053def548:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff83e1da40
 ABI: null
 flag: 0x10000284  flag2: 0
 reaper: 0xffffffff83e1da40 reapsubtree: 12
 sigparent: 20
 vmspace: 0xffffffff83e1e9e0
   (map 0xffffffff83e1e9e0)
   (map.pmap 0xffffffff83e1eaa0)
   (pmap 0xffffffff83e1eb08)
 threads: 22
100015                   I                                   [swi5: fast taskq]
100018                   I                                   [swi6: task queue]
100019                   I                                   [swi6: Giant taskq]
100031                   Run     CPU 0                       [swi1: netisr 0]
100032                   I                                   [swi1: hpts]
100033                   I                                   [swi1: hpts]
100046                   I                                   [irq24: virtio_pci0]
100047                   I                                   [irq25: virtio_pci0]
100048                   I                                   [irq26: virtio_pci0]
100049                   I                                   [irq27: virtio_pci0]
100050                   I                                   [irq28: virtio_pci1]
100051                   I                                   [irq29: virtio_pci1]
100052                   I                                   [irq30: virtio_pci1]
100053                   I                                   [irq31: virtio_pci1]
100054                   I                                   [irq32: virtio_pci1]
100059                   I                                   [irq33: virtio_pci2]
100060                   I                                   [irq34: virtio_pci2]
100061                   I                                   [irq35: virtio_pci2]
100063                   I                                   [irq1: atkbd0]
100064                   I                                   [irq12: psm0]
100065                   I                                   [swi0: uart uart++]
100069                   I                                   [swi1: pf send]
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
46522   792   792     0  R       (threaded)                  syz-executor.0
100696                   RunQ                                syz-executor.0
145678                   L      *sctp-in 0xfffffe0057338300  syz-executor.0
145679                   L      *sctp-in 0xfffffe0057338300  syz-executor.0
145680                   S       uwait   0xfffffe0056fe4b80  syz-executor.0
46521   791   791     0  R       (threaded)                  syz-executor.3
112175                   RunQ                                syz-executor.3
145681                   L      *sctp-in 0xfffffe0057338300  syz-executor.3
145682                   L      *sctp-in 0xfffffe0057338300  syz-executor.3
46519   790   790     0  RE                                  syz-executor.1
46516   794   794     0  LE     *sctp-tc 0xfffffe00578906c0  syz-executor.2
36257     1 36257    65  Ss      select  0xfffffe009e7d37c0  dhclient
28022     1 28022     0  Ss      select  0xfffffe009f97a2c0  dhclient
28015     1 28015     0  Ss      select  0xfffffe009f979940  dhclient
27966     1 27966    65  Ss      select  0xfffffe009f97a0c0  dhclient
19659     1 19659     0  Ss      select  0xfffffe009f979ec0  dhclient
19652     1 19652     0  Ss      select  0xfffffe009f97acc0  dhclient
19607     1 19607    65  Ss      select  0xfffffe009f979f40  dhclient
11360     1 11360     0  Ss      select  0xfffffe009e7d3340  dhclient
11353     1 11353     0  Ss      select  0xfffffe009f97aa40  dhclient
11318     1 11318    65  Ss      select  0xfffffe009f979dc0  dhclient
 2805     1  2805     0  Ss      select  0xfffffe009e7d2a40  dhclient
 2796     1  2796     0  Ss      select  0xfffffe009e7d2c40  dhclient
  794   788   794     0  Rs                                  syz-executor.2
  792   788   792     0  Rs                                  syz-executor.0
  791   788   791     0  Rs                                  syz-executor.3
  790   788   790     0  Rs                                  syz-executor.1
  788   786   786     0  S       (threaded)                  syz-execprog
100115                   S       uwait   0xfffffe0057893d80  syz-execprog
100117                   S       uwait   0xfffffe0057894000  syz-execprog
100118                   S       uwait   0xfffffe0053df9880  syz-execprog
100119                   S       uwait   0xfffffe0053df9980  syz-execprog
100120                   S       uwait   0xfffffe0057893100  syz-execprog
100122                   S       uwait   0xfffffe0057893300  syz-execprog
100123                   S       uwait   0xfffffe0057894400  syz-execprog
100124                   S       uwait   0xfffffe0058d92400  syz-execprog
100125                   S       uwait   0xfffffe0057893400  syz-execprog
100126                   S       uwait   0xfffffe0058d92500  syz-execprog
100128                   S       kqread  0xfffffe0058b8be00  syz-execprog
100129                   S       uwait   0xfffffe0058d92700  syz-execprog
  786   784   786     0  Ss      pause   0xfffffe009f0420b0  csh
  784   688   784     0  Ss      select  0xfffffe009e7d3f40  sshd
  754     1   754     0  Ss+     ttyin   0xfffffe00574774b0  getty
  753     1   753     0  Ss+     ttyin   0xfffffe005868ecb0  getty
  752     1   752     0  Ss+     ttyin   0xfffffe00586904b0  getty
  751     1   751     0  Ss+     ttyin   0xfffffe0058690cb0  getty
  750     1   750     0  Ss+     ttyin   0xfffffe00586914b0  getty
  749     1   749     0  Ss+     ttyin   0xfffffe0058691cb0  getty
  748     1   748     0  Ss+     ttyin   0xfffffe0053f414b0  getty
  747     1   747     0  Ss+     ttyin   0xfffffe0053f41cb0  getty
  746     1   746     0  Ss+     ttyin   0xfffffe0053f424b0  getty
  692     1   692     0  Ss      nanslp  0xffffffff83e47a41  cron
  688     1   688     0  Ss      select  0xfffffe0058b37f40  sshd
  501     1   501     0  Ss      select  0xfffffe0058b98840  syslogd
  430     1   430     0  Ss      select  0xfffffe009e7d45c0  devd
  429     1   429    65  Ss      select  0xfffffe009e7d4640  dhclient
  344     1   344     0  Ss      select  0xfffffe009e7d46c0  dhclient
  341     1   341     0  Ss      select  0xfffffe0058b988c0  dhclient
   17     0     0     0  DL      vlruwt  0xfffffe0056f9e548  [vnlru]
   16     0     0     0  DL      syncer  0xffffffff83f6d260  [syncer]
   15     0     0     0  DL      (threaded)                  [bufdaemon]
100079                   D       psleep  0xffffffff83f6b860  [bufdaemon]
100082                   D       -       0xffffffff83211f80  [bufspacedaemon-0]
100091                   D       sdflush 0xfffffe0058cdcce8  [/ worker]
    9     0     0     0  DL      psleep  0xffffffff83f9f380  [vmdaemon]
    8     0     0     0  DL      (threaded)                  [pagedaemon]
100077                   D       psleep  0xffffffff83f93238  [dom0]
100083                   D       launds  0xffffffff83f93244  [laundry: dom0]
100084                   D       umarcl  0xffffffff81eb0e40  [uma]
    7     0     0     0  DL      -       0xffffffff83c03788  [rand_harvestq]
    6     0     0     0  RL      CPU 1                       [pf purge]
    5     0     0     0  DL      waiting 0xffffffff84af64a0  [sctp_iterator]
    4     0     0     0  DL      (threaded)                  [cam]
100044                   D       -       0xffffffff83aa56c0  [doneq0]
100045                   D       -       0xffffffff83aa5640  [async]
100076                   D       -       0xffffffff83aa54c0  [scanner]
   14     0     0     0  DL      seqstat 0xfffffe0056f03c88  [sequencer 00]
    3     0     0     0  DL      (threaded)                  [crypto]
100040                   D       crypto_ 0xffffffff83f8ea40  [crypto]
100041                   D       crypto_ 0xfffffe0053f73030  [crypto returns 0]
100042                   D       crypto_ 0xfffffe0053f73080  [crypto returns 1]
   13     0     0     0  DL      (threaded)                  [geom]
100035                   D       -       0xffffffff83e1d000  [g_event]
100036                   D       -       0xffffffff83e1d020  [g_up]
100037                   D       -       0xffffffff83e1d040  [g_down]
    2     0     0     0  LL      (threaded)                  [clock]
100029                   L      *sctp-in 0xfffffe0057338300  [clock (0)]
100030                   I                                   [clock (1)]
   12     0     0     0  RL      (threaded)                  [intr]
100015                   I                                   [swi5: fast taskq]
100018                   I                                   [swi6: task queue]
100019                   I                                   [swi6: Giant taskq]
100031                   Run     CPU 0                       [swi1: netisr 0]
100032                   I                                   [swi1: hpts]
100033                   I                                   [swi1: hpts]
100046                   I                                   [irq24: virtio_pci0]
100047                   I                                   [irq25: virtio_pci0]
100048                   I                                   [irq26: virtio_pci0]
100049                   I                                   [irq27: virtio_pci0]
100050                   I                                   [irq28: virtio_pci1]
100051                   I                                   [irq29: virtio_pci1]
100052                   I                                   [irq30: virtio_pci1]
100053                   I                                   [irq31: virtio_pci1]
100054                   I                                   [irq32: virtio_pci1]
100059                   I                                   [irq33: virtio_pci2]
100060                   I                                   [irq34: virtio_pci2]
100061                   I                                   [irq35: virtio_pci2]
100063                   I                                   [irq1: atkbd0]
100064                   I                                   [irq12: psm0]
100065                   I                                   [swi0: uart uart++]
100069                   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    0xfffffe0053df0000  [init]
   10     0     0     0  DL      audit_w 0xffffffff83f8f540  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff83e1da40  [swapper]
100005                   D       -       0xfffffe0008191000  [if_config_tqg_0]
100006                   D       -       0xfffffe0008190e00  [softirq_0]
100007                   D       -       0xfffffe0008190d00  [softirq_1]
100008                   D       -       0xfffffe0008190c00  [if_io_tqg_0]
100009                   D       -       0xfffffe0008190b00  [if_io_tqg_1]
100010                   D       -       0xfffffe0008190a00  [inm_free taskq]
100011                   D       -       0xfffffe0008190900  [linuxkpi_irq_wq]
100012                   D       -       0xfffffe0008190800  [in6m_free taskq]
100013                   D       -       0xfffffe0008190700  [deferred_unmount ta]
100014                   D       -       0xfffffe0008190600  [thread taskq]
100016                   D       -       0xfffffe0008190400  [pci_hp taskq]
100017                   D       -       0xfffffe0008190300  [kqueue_ctx taskq]
100020                   D       -       0xfffffe0008190000  [aiod_kick taskq]
100021                   D       -       0xfffffe000818fe00  [linuxkpi_short_wq_0]
100022                   D       -       0xfffffe000818fe00  [linuxkpi_short_wq_1]
100023                   D       -       0xfffffe000818fe00  [linuxkpi_short_wq_2]
100024                   D       -       0xfffffe000818fe00  [linuxkpi_short_wq_3]
100025                   D       -       0xfffffe000818fd00  [linuxkpi_long_wq_0]
100026                   D       -       0xfffffe000818fd00  [linuxkpi_long_wq_1]
100027                   D       -       0xfffffe000818fd00  [linuxkpi_long_wq_2]
100028                   D       -       0xfffffe000818fd00  [linuxkpi_long_wq_3]
100034                   D       -       0xfffffe000818fc00  [firmware taskq]
100038                   D       -       0xfffffe000818f200  [crypto_0]
100039                   D       -       0xfffffe000818f200  [crypto_1]
100055                   D       -       0xfffffe000818e900  [vtnet0 rxq 0]
100056                   D       -       0xfffffe000818e800  [vtnet0 txq 0]
100057                   D       -       0xfffffe000818e700  [vtnet0 rxq 1]
100058                   D       -       0xfffffe000818e600  [vtnet0 txq 1]
100062                   D       vtbslp  0xfffffe0056f4be00  [virtio_balloon]
100066                   D       -       0xffffffff82bce7a1  [deadlkres]
100070                   D       -       0xfffffe0008191100  [mca taskq]
100071                   D       -       0xfffffe000818eb00  [acpi_task_0]
100072                   D       -       0xfffffe000818eb00  [acpi_task_1]
100073                   D       -       0xfffffe000818eb00  [acpi_task_2]
100075                   D       -       0xfffffe000818ea00  [CAM taskq]
db> show all locks
Process 46516 (syz-executor.2) thread 0xfffffe009f6cf000 (112081)
exclusive sleep mutex sctp-inp (inp) r = 0 (0xfffffe009f403d90) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3340
exclusive rw sctp-info (sctp-info) r = 0 (0xfffffe0053c43dc8) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3339
exclusive sleep mutex sctp-create (inp_create) r = 0 (0xfffffe009f403db0) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3338
Process 6 (pf purge) thread 0xfffffe0057886000 (100068)
shared sx vnet_sxlock (vnet_sxlock) r = 0 (0xffffffff83f707a0) locked @ /syzkaller/managers/main/kernel/sys/netpfil/pf/pf.c:1871
exclusive sx pf end thread (pf end thread) r = 0 (0xffffffff846367c0) locked @ /syzkaller/managers/main/kernel/sys/netpfil/pf/pf.c:1867
Process 2 (clock) thread 0xfffffe0053ea93a0 (100029)
exclusive sleep mutex sctp-create (inp_create) r = 0 (0xfffffe009f436440) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3338
Process 12 (intr) thread 0xfffffe0053ea8560 (100031)
exclusive sleep mutex so_rcv (so_rcv) r = 0 (0xfffffe0058ca2560) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctputil.c:4846
exclusive sleep mutex sctp-tcb (tcb) r = 0 (0xfffffe009fc36bf0) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:2138
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
          tcp_hpts            7         4801K            7
            devbuf         4217         4323K         4245
         sysctloid        35322         2081K        35393
             vtbuf           24         1968K           46
              kobj          328         1312K          489
            newblk            5         1025K        46145
          vfscache            3         1025K            3
          inodedep          865          836K        45619
               pcb           37          553K       182098
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
         sctp_timw         1205          302K         1205
              vmem            3          274K            5
           subproc          130          256K        46596
            dirrem          856          214K        45536
            acpica         1674          184K        57552
         vnet_data            1          168K            1
           tidhash            3          141K            3
          filedesc           18          137K        91084
            linker          358          134K          386
           pagedep            9          130K        45548
        tfo_ccache            1          128K            1
            DEVFS1          109          109K          126
          freefile          856          107K        45533
               sem            4          106K            4
               BPF           46           88K           46
               bus          994           81K         5207
          mtx_pool            2           72K            2
          syncache            1           68K            1
            module          513           65K          513
          acpitask            1           64K            1
       ddb_capture            1           64K            1
              umtx          352           44K          352
           kdtrace          214           43K        92206
              temp           34           33K         2364
            DEVFS3          128           32K          138
         hostcache            1           32K            1
               shm            1           32K            1
               msg            4           30K            4
        gtaskqueue           18           26K           18
            kbdmux            6           22K            6
            ifaddr           70           20K           72
        DEVFS_RULE           56           20K           56
         ufs_mount            4           17K            5
              proc            3           17K            3
               tty           16           16K           16
          routetbl          130           16K          410
           ithread           97           16K           97
            bus-sc           34           15K         1681
            KTRACE          100           13K          100
             ifnet            7           13K            7
       ether_multi          152           13K          162
           lltable           39           12K           43
              kenv           95           12K           95
      eventhandler          134           12K          134
              rman           88           11K          431
              GEOM           61           11K          490
         CAM queue            5           11K         1528
         in6_multi           65            9K           65
         bmsafemap            2            9K        45586
              UART           12            9K           12
           devstat            4            9K            4
              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          296
              cred           28            7K          309
         taskqueue           63            7K           63
            sglist            5            7K            5
           CAM DEV            3            6K          510
            plimit           24            6K          486
            kqueue           59            6K        46529
       ufs_dirhash           24            5K           24
               UMA          272            5K          272
           session           35            5K           55
          pf_ifnet           10            5K           19
         sctp_atcl           11            5K       273020
                vt           11            5K           11
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
           acpisem           28            4K           28
             selfd           55            4K        11666
             lockf           32            4K           60
         proc-args           92            4K        47890
           pwddesc           55            4K        46523
             hhook           15            4K           17
          terminal           11            3K           11
            select           19            3K           59
           uidinfo            3            3K           13
         sctp_stro            2            2K        91006
        local_apic            1            2K            1
           io_apic            1            2K            1
       fpukern_ctx            2            2K            2
         ipsec-saq            2            2K            2
            ip6ndp           12            2K           14
            Unitno           31            2K           47
          sctp_ifa           13            2K           14
           CAM XPT           22            2K          543
               msi           12            2K           12
          in_multi            6            2K            8
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
             clone            9            2K            9
               tun            7            2K            7
         sctp_stri            2            1K        90996
            DEVFSP           16            1K           21
           softdep            1            1K            1
             mkdir            8            1K        91054
            sahead            1            1K            1
          secasvar            1            1K            1
             nhops            6            1K            8
       vnodemarker            2            1K           80
      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
          procdesc            5            1K           18
         sctp_atky           13            1K       364026
         newdirblk            4            1K        45527
            diradd            4            1K        45578
              pfil            4            1K            4
              cdev            2            1K            2
       inpcbpolicy           14            1K          229
    chacha20random            1            1K            1
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            statfs            0            0K        45732
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8322    1076       58970       0     254   38494208        0
        malloc-384    384    4981    3509       49736       0      30    3260160        0
              pbuf   2624       0     989           0       0       2    2595136        0
              mbuf    256    8649    1013     4441083       0     254    2473472        0
         sctp_asoc   2256       2     763       91006       0     254    1725840        0
          BUF TRIE    144     193   11595         959       0      62    1697472        0
        malloc-128    128   11641     356      148325       0     126    1535616        0
       malloc-4096   4096     330       4         493       0       2    1368064        0
       UMA Slabs 0    112   10724      34       10724       0     126    1204896        0
        malloc-256    256     919    3551       45785       0      62    1144320        0
        malloc-256    256      46    4424       89331       0      62    1144320        0
         vmem btag     56   18644     115       18644       0     254    1050504        0
      mbuf_cluster   2048     508       0         508       0     254    1040384        0
           sctp_ep   1208       7     763       91018       0     254     930160        0
        RADIX NODE    144    4088     471      935723       0      63     656496        0
         FFS inode   1160     519      27       46053       0       8     633360        0
        malloc-128    128     889    3668       45721       0     126     583296        0
         VM OBJECT    264    1986     174      987719       0      30     570240        0
        sctp_raddr    736      13     757      545986       0     254     566720        0
             tcpcb   1104       3     508           7       0     254     564144        0
            socket    960      47     461       92548       0     254     487680        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
        256 Bucket   2048     161      25        1456       0       8     380928        0
        malloc-256    256    1226      79        1348       0      62     334080        0
            THREAD   1808     156      20       45682       0       8     318208        0
         MAP ENTRY     96    2660     490     1886663       0     126     302400        0
             VNODE    448     554     112       46090       0      30     298368        0
       malloc-4096   4096      62       6       46530       0       2     278528        0
         malloc-64     64    3955     140       62037       0     254     262080        0
         malloc-16     16   14612     388       14683       0     254     240000        0
            DEVCTL   1024       0     220         154       0       0     225280        0
        malloc-256    256     203     667       46518       0      62     222720        0
      malloc-16384  16384       9       4       45540       0       1     212992        0
      malloc-65536  65536       1       2         171       0       1     196608        0
      malloc-65536  65536       1       2         137       0       1     196608        0
        malloc-128    128    1240     279       27175       0     126     194432        0
         malloc-32     32    5564     358        5640       0     254     189504        0
         UMA Zones    768     244       0         244       0      16     187392        0
     FPU_save_area    832     158      40       45780       0      16     164736        0
       malloc-1024   1024     137      23         154       0      16     163840        0
        malloc-128    128    1105     166        5521       0     126     162688        0
       S VFS Cache    104    1025     496       46579       0     126     158184        0
       FFS2 dinode    256     519      51       46052       0      62     145920        0
           VMSPACE   2552      40      14       46507       0       4     137808        0
         64 Bucket    512     205      59       16533       0      30     135168        0
        128 Bucket   1024      87      44        9421       0      16     134144        0
             unpcb    256      20     490        1259       0     254     130560        0
       mbuf_packet    256      28     480      182205       0     254     130048        0
        sctp_chunk    152      10     770      454980       0     254     118560        0
          ksiginfo    112      63     981         176       0     126     116928        0
        malloc-256    256     253     182       46241       0      62     111360        0
             g_bio    408       0     270        7691       0      30     110160        0
       malloc-4096   4096      21       3          26       0       2      98304        0
       malloc-2048   2048       5      43        1228       0       8      98304        0
              PROC   1352      56      16       46522       0       8      97344        0
         32 Bucket    256     199     176       25974       0      62      96000        0
       malloc-8192   8192       9       2          37       0       1      90112        0
       malloc-4096   4096      19       3          33       0       2      90112        0
         filedesc0   1072      57      27       46523       0       8      90048        0
          UMA Kegs    384     230       3         230       0      30      89472        0
         malloc-64     64     574     749      183713       0     254      84672        0
       malloc-2048   2048      15      25       91026       0       8      81920        0
        sctp_readq    152       2     518       43905       0     254      79040        0
       malloc-8192   8192       8       1          10       0       1      73728        0
        malloc-128    128     372     155       46086       0     126      67456        0
      malloc-65536  65536       1       0           1       0       1      65536        0
      malloc-65536  65536       0       1           8       0       1      65536        0
      malloc-32768  32768       2       0           2       0       1      65536        0
      malloc-32768  32768       0       2         120       0       1      65536        0
        malloc-256    256      67     188      182445       0      62      65280        0
sctp_stream_msg_out    112       0     540       45498       0     254      60480        0
        malloc-384    384     125      25         126       0      30      57600        0
         udp_inpcb    424       6     120         211       0      30      53424        0
         malloc-64     64      97     722       46623       0     254      52416        0
         malloc-64     64      86     733       47189       0     254      52416        0
         malloc-64     64     514     305        1069       0     254      52416        0
           DIRHASH   1024      35      13          35       0      16      49152        0
             NAMEI   1024       0      48      197310       0      16      49152        0
      malloc-16384  16384       3       0           3       0       1      49152        0
      malloc-16384  16384       2       1          17       0       1      49152        0
       malloc-1024   1024       5      43       91022       0      16      49152        0
       malloc-1024   1024       5      43        1793       0      16      49152        0
        malloc-512    512       2      94       90997       0      30      49152        0
        malloc-384    384      37      83      273050       0      30      46080        0
            da_ccb    544       0      84        2038       0      16      45696        0
          syncache    168       0     264           5       0     254      44352        0
             Files     80     175     375      145088       0     126      44000        0
            clpbuf   2624       0      16          21       0      16      41984        0
            pcpu-8      8    4704     416        4860       0     254      40960        0
              pipe    744      23      27         400       0      16      37200        0
               PWD     32      20    1114       45633       0     254      36288        0
         malloc-64     64      37     530       16086       0     254      36288        0
         malloc-64     64     223     344         245       0     254      36288        0
         malloc-64     64     113     454         123       0     254      36288        0
        malloc-128    128      36     243         154       0     126      35712        0
        malloc-128    128      29     250       45576       0     126      35712        0
        malloc-128    128      47     232          47       0     126      35712        0
     routing nhops    256      27     108          34       0      62      34560        0
           ttyoutq    256      72      63         160       0      62      34560        0
        malloc-384    384      50      40          52       0      30      34560        0
        malloc-256    256      28     107         368       0      62      34560        0
        malloc-256    256       7     128       46403       0      62      34560        0
         TURNSTILE    136     177      75         177       0      62      34272        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-16384  16384       0       2         160       0       1      32768        0
       malloc-8192   8192       2       2         103       0       1      32768        0
       malloc-4096   4096       2       6       46357       0       2      32768        0
       malloc-2048   2048       3      13          27       0       8      32768        0
       malloc-2048   2048      10       6          10       0       8      32768        0
       malloc-2048   2048       3      13          74       0       8      32768        0
       malloc-2048   2048       0      16          50       0       8      32768        0
       malloc-1024   1024       8      24           9       0      16      32768        0
       malloc-1024   1024       5      27           5       0      16      32768        0
       malloc-1024   1024       3      29         160       0      16      32768        0
       malloc-1024   1024       8      24           8       0      16      32768        0
       malloc-1024   1024       3      29          20       0      16      32768        0
        malloc-512    512      12      52          12       0      30      32768        0
        malloc-512    512       0      64         132       0      30      32768        0
        malloc-512    512       2      62          51       0      30      32768        0
        malloc-512    512       3      61          81       0      30      32768        0
        malloc-512    512       8      56           8       0      30      32768        0
           pcpu-64     64     493      19         493       0     254      32768        0
             KNOTE    160      26     174      274389       0      62      32000        0
            ttyinq    160     135      65         300       0      62      32000        0
          8 Bucket     80      47     353        7234       0     126      32000        0
            cpuset    104       7     272           7       0     126      29016        0
         malloc-32     32     147     735      231756       0     254      28224        0
         16 Bucket    144      59     137         582       0      62      28224        0
          4 Bucket     48       7     581         989       0     254      28224        0
          2 Bucket     32      56     826        4305       0     254      28224        0
         tcp_inpcb    424       3      60           7       0      30      26712        0
             ripcb    424       5      58          11       0      30      26712        0
       malloc-8192   8192       3       0           3       0       1      24576        0
       malloc-4096   4096       2       4           6       0       2      24576        0
           rtentry    176      30     108          34       0      62      24288        0
              PGRP     88      35     241          55       0     126      24288        0
    ertt_txseginfo     40       0     606         281       0     254      24240        0
          rl_entry     40      53     553          53       0     254      24240        0
        malloc-384    384       3      57          62       0      30      23040        0
        malloc-384    384      20      40         360       0      30      23040        0
        SLEEPQUEUE     88     177      79         177       0     126      22528        0
         hostcache     64       1     314           1       0     254      20160        0
             udpcb     32       6     624         211       0     254      20160        0
   udp_inpcb ports     32       3     627          40       0     254      20160        0
              ertt     72       3     277           7       0     126      20160        0
         malloc-32     32     108     522         124       0     254      20160        0
         malloc-32     32      26     604          81       0     254      20160        0
         malloc-32     32     121     509         600       0     254      20160        0
         malloc-32     32      59     571        1010       0     254      20160        0
         malloc-32     32      54     576         228       0     254      20160        0
         malloc-32     32       5     625           9       0     254      20160        0
       Mountpoints   2752       2       5           2       0       4      19264        0
 epoch_record pcpu    256       4      60           4       0      62      16384        0
      malloc-16384  16384       1       0           1       0       1      16384        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-2048   2048       3       5           3       0       8      16384        0
       malloc-2048   2048       3       5           3       0       8      16384        0
        malloc-512    512       0      32           1       0      30      16384        0
        malloc-512    512       1      31           1       0      30      16384        0
           SMR CPU     32       7     504           7       0     254      16352        0
        sctp_laddr     48       0     336          12       0     254      16128        0
         malloc-16     16      98     902      410090       0     254      16000        0
         malloc-16     16     242     758      232327       0     254      16000        0
              kenv    258      15      45        1053       0      30      15480        0
            mqnode    416       3      33           3       0      30      14976        0
              vmem   1856       1       7           1       0       8      14848        0
        SMR SHARED     24       7     504           7       0     254      12264        0
   tcp_inpcb ports     32       1     377           1       0     254      12096        0
         malloc-16     16      14     736       45619       0     254      12000        0
         malloc-16     16      38     712         164       0     254      12000        0
         malloc-16     16     291     459       26512       0     254      12000        0
         malloc-16     16      10     740          12       0     254      12000        0
        malloc-384    384       1      29           1       0      30      11520        0
        malloc-384    384       2      28           2       0      30      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-4096   4096       0       2           1       0       2       8192        0
      vtnet_tx_hdr     24       0     334        1705       0     254       8016        0
         malloc-16     16       0     500           2       0     254       8000        0
           pcpu-16     16       7     249           7       0     254       4096        0
       UMA Slabs 1    176      10      12          10       0      62       3872        0
        KMAP ENTRY     96      12      27          14       0       0       3744        0
            pcpu-4      4       1     511           1       0     254       2048        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
   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     254          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     56       0       0           0       0     254          0        0
      tcp_rack_pcb    896       0       0           0       0      16          0        0
      tcp_rack_map    120       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
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     72       0       0           0       0     254          0        0
               ipq     56       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
   tcp_log_id_node    120       0       0           0       0     126          0        0
 tcp_log_id_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
       ripcb ports     32       0       0           0       0     254          0        0
udplite_inpcb ports     32       0       0           0       0     254          0        0
     udplite_inpcb    424       0       0           0       0      30          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
        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    608       0       0           0       0      16          0        0
        TMPFS node    224       0       0           0       0      62          0        0
     LTS VFS Cache    360       0       0           0       0      30          0        0
       L VFS Cache    320       0       0           0       0      30          0        0
     STS VFS Cache    144       0       0           0       0      62          0        0
           cryptop    280       0       0           0       0      30          0        0
  linux_dma_object     32       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
    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-4096   4096       0       0           0       0       2          0        0
           pcpu-32     32       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 (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-freebsd-main 2022/04/26 15:03 freebsd-src 651a887f4e66 7c337266 console log report syz Fatal trap NUM: page fault in sctp_wakeup_the_read_socket
ci-freebsd-main 2022/04/26 10:57 freebsd-src 651a887f4e66 7c337266 console log report Fatal trap NUM: page fault in sctp_wakeup_the_read_socket
ci-freebsd-i386 2022/04/20 19:24 freebsd-src 746cc38ec358 7c337266 console log report Fatal trap NUM: page fault in sctp_wakeup_the_read_socket
* Struck through repros no longer work on HEAD.