syzbot


Fatal trap NUM: page fault in nd6_dad_timer (2)

Status: auto-closed as invalid on 2022/05/10 14:39
Reported-by: syzbot+41af0d3540749d770af0@syzkaller.appspotmail.com
First crash: 805d, last: 805d
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
freebsd Fatal trap NUM: page fault in nd6_dad_timer 1 946d 946d 0/2 auto-closed as invalid on 2021/12/19 18:58
freebsd Fatal trap NUM: page fault in nd6_dad_timer (3) 3 614d 710d 0/2 auto-obsoleted due to no activity on 2022/11/17 02:16
freebsd Fatal trap NUM: page fault in nd6_dad_timer (5) 2 264d 335d 0/2 auto-obsoleted due to no activity on 2023/11/02 07:26
freebsd Fatal trap NUM: page fault in nd6_dad_timer (4) 2 448d 509d 0/2 auto-obsoleted due to no activity on 2023/05/02 09:23
freebsd Fatal trap NUM: page fault in nd6_dad_timer (6) syz 6 13d 149d 0/2 upstream: reported syz repro on 2023/11/27 00:20

Sample crash report:
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address	= 0x10
fault code		= supervisor read data, page not present
instruction pointer	= 0x20:0xffffffff81bc8c09
stack pointer	        = 0x0:0xfffffe0054006b00
frame pointer	        = 0x0:0xfffffe0054006cd0
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		= 2 (clock (0))
trap number		= 12
panic: page fault
cpuid = 0
time = 1644417498
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe0054006310
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe0054006470
vpanic() at vpanic+0x2b8/frame 0xfffffe0054006550
panic() at panic+0xb5/frame 0xfffffe0054006610
trap_fatal() at trap_fatal+0x6a4/frame 0xfffffe0054006710
trap_pfault() at trap_pfault+0x186/frame 0xfffffe0054006850
trap() at trap+0x5e4/frame 0xfffffe0054006a30
calltrap() at calltrap+0x8/frame 0xfffffe0054006a30
--- trap 0xc, rip = 0xffffffff81bc8c09, rsp = 0xfffffe0054006b00, rbp = 0xfffffe0054006cd0 ---
nd6_dad_timer() at nd6_dad_timer+0x199/frame 0xfffffe0054006cd0
softclock_call_cc() at softclock_call_cc+0x3d7/frame 0xfffffe0054006e80
softclock_thread() at softclock_thread+0x1ff/frame 0xfffffe0054006ef0
fork_exit() at fork_exit+0xd0/frame 0xfffffe0054006f30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0054006f30
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 2 tid 100029 ]
Stopped at      kdb_enter+0x6b: movq    $0,0x2708e7a(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b
es                        0x3b
fs                        0x13
gs                        0x1b
ss                           0
rax                       0x12
rcx         0xfad3e4a5b4a347da
rdx         0xdffff7c000000000
rbx                          0
rsp         0xfffffe0054006450
rbp         0xfffffe0054006470
rsi                        0x1
rdi                          0
r8                         0x3
r9                  0xffffffff
r10                          0
r11                          0
r12         0xfffffe0053eefac0
r13         0xfffffe0054006401
r14         0xffffffff82b9ce60  .str.18
r15         0xffffffff82b9ce60  .str.18
rip         0xffffffff8176449b  kdb_enter+0x6b
rflags                    0x46
kdb_enter+0x6b: movq    $0,0x2708e7a(%rip)
db> show proc
Process 2 (clock) at 0xfffffe0053ee5000:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff83e10b80
 ABI: null
 flag: 0x10000284  flag2: 0
 reaper: 0xffffffff83e10b80 reapsubtree: 2
 sigparent: 20
 vmspace: 0xffffffff83e11b20
   (map 0xffffffff83e11b20)
   (map.pmap 0xffffffff83e11be0)
   (pmap 0xffffffff83e11c48)
 threads: 2
100029                   Run     CPU 0                       [clock (0)]
100030                   I                                   [clock (1)]
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
59412     1 59401     0  R       (threaded)                  syz-executor.0
179676                   Run     CPU 1                       syz-executor.0
179935                   S       connec  0xfffffe0058d410da  syz-executor.0
59407 59331   430     0  S       nanslp  0xffffffff83e3aa01  sleep
59331 59325   430     0  S       wait    0xfffffe0058b6a548  sh
59325   430   430     0  S       wait    0xfffffe0058b6aa90  sh
52537     1   789     0  SV      uwait   0xfffffe00574fe480  syz-executor.3
51463     1   789     0  SV      uwait   0xfffffe00ae905400  syz-executor.3
51454     1   789     0  SV      uwait   0xfffffe0058d2f280  syz-executor.3
51443     1   789     0  SV      uwait   0xfffffe0057501600  syz-executor.3
51156     1 51151     0  S       uwait   0xfffffe0058d2fa00  syz-executor.3
51155     1 51151     0  S       uwait   0xfffffe0053effb80  syz-executor.3
51147     1 51143     0  S       uwait   0xfffffe00574fe000  syz-executor.3
51146     1 51143     0  S       uwait   0xfffffe00ae904180  syz-executor.3
51142     1 51139     0  S       uwait   0xfffffe00ae904a00  syz-executor.3
43607     1   782     0  S       uwait   0xfffffe00ae903800  syz-executor.2
43602     1   782     0  S       uwait   0xfffffe00ae905100  syz-executor.2
43594     1   782     0  S       uwait   0xfffffe0057501d80  syz-executor.2
40739     1   789     0  S       uwait   0xfffffe0053eff880  syz-executor.3
40734     1   789     0  S       uwait   0xfffffe00ae904e80  syz-executor.3
39827     1   780     0  S       uwait   0xfffffe00ae904a80  syz-executor.1
39821     1   780     0  S       uwait   0xfffffe0058d2e980  syz-executor.1
39818     1   780     0  S       uwait   0xfffffe0058d2f000  syz-executor.1
39814     1   780     0  S       uwait   0xfffffe0008176b80  syz-executor.1
39809     1   780     0  S       uwait   0xfffffe00ae904900  syz-executor.1
39806     1   780     0  S       uwait   0xfffffe0053effa80  syz-executor.1
39315     1   782     0  S       uwait   0xfffffe0058d2f900  syz-executor.2
39314     1   780     0  S       uwait   0xfffffe0053effd80  syz-executor.1
39310     1   780     0  S       uwait   0xfffffe0058d2ee80  syz-executor.1
39305     1   780     0  S       uwait   0xfffffe0058d2ff00  syz-executor.1
28580     1   782     0  SV      uwait   0xfffffe00574ff780  syz-executor.2
28575     1   782     0  SV      uwait   0xfffffe0058d2e280  syz-executor.2
28571     1   782     0  SV      uwait   0xfffffe0058d2ee00  syz-executor.2
28557     1   782     0  SV      uwait   0xfffffe00574ff380  syz-executor.2
26117     1   782     0  S       uwait   0xfffffe00574fe680  syz-executor.2
20042     1   782     0  SV      uwait   0xfffffe0057501e00  syz-executor.2
19669     0     0     0  DL      -       0xffffffff83f5a6c0  [soaiod4]
19668     0     0     0  DL      -       0xffffffff83f5a6c0  [soaiod3]
19667     0     0     0  DL      -       0xffffffff83f5a6c0  [soaiod2]
19666     0     0     0  DL      -       0xffffffff83f5a6c0  [soaiod1]
18690     1   789     0  S       uwait   0xfffffe0053eff200  syz-executor.3
18688     1   789     0  S       uwait   0xfffffe00574fe200  syz-executor.3
18686     1   789     0  S       uwait   0xfffffe0058d2f200  syz-executor.3
18681     1   789     0  S       uwait   0xfffffe0053eff700  syz-executor.3
18512     1   789     0  SV      uwait   0xfffffe0008176380  syz-executor.3
16176     1   789     0  S       uwait   0xfffffe00ae905000  syz-executor.3
16170     1   789     0  S       uwait   0xfffffe00ae905300  syz-executor.3
16167     1   789     0  S       uwait   0xfffffe0008176080  syz-executor.3
16161     1   789     0  S       uwait   0xfffffe0058d2ea80  syz-executor.3
12269 12267   780     0  SV      uwait   0xfffffe0058d30380  syz-executor.1
12267     1   780     0  DV      ppwait  0xfffffe0099b6af88  syz-executor.1
12014     1   789     0  SV      uwait   0xfffffe0058d2e480  syz-executor.3
11450     1   789     0  SV      uwait   0xfffffe0058d2f480  syz-executor.3
11438     1   780     0  SV      uwait   0xfffffe0058d2e780  syz-executor.1
 7446     1  7446    65  Ss      select  0xfffffe0053c9f840  dhclient
 6889     1  6889     0  Ss      select  0xfffffe0053c9e5c0  dhclient
 6886     1  6886     0  Ss      select  0xfffffe0053c9f740  dhclient
 6858     1  6858    65  Ss      select  0xfffffe0053c9e7c0  dhclient
 4783     1  4783     0  Ss      select  0xfffffe0053c9e640  dhclient
 4780     1  4780     0  Ss      select  0xfffffe0053f5c140  dhclient
 3436     1  3436    65  Ss      select  0xfffffe0053f5bac0  dhclient
 2492     0     0     0  DL      aiordy  0xfffffe0097dbf000  [aiod4]
 2491     0     0     0  DL      aiordy  0xfffffe0092dc4000  [aiod3]
 2490     0     0     0  DL      aiordy  0xfffffe0092dc5548  [aiod2]
 2489     0     0     0  DL      aiordy  0xfffffe0097dbf548  [aiod1]
 1159     1  1159     0  Ss      select  0xfffffe0053f5c5c0  dhclient
 1156     1  1156     0  Ss      select  0xfffffe0053c9edc0  dhclient
  789   774   789     0  Ss      piperd  0xfffffe0092df02e8  syz-executor.3
  782   774   782     0  Ss      piperd  0xfffffe0058b722e8  syz-executor.2
  780   774   780     0  Ss      piperd  0xfffffe0058b842e8  syz-executor.1
  774   772   772     0  R       (threaded)                  syz-fuzzer
100105                   S       uwait   0xfffffe0057500980  syz-fuzzer
100115                   S       nanslp  0xffffffff83e3aa01  syz-fuzzer
100116                   S       uwait   0xfffffe0058d30880  syz-fuzzer
100117                   RunQ                                syz-fuzzer
100118                   S       uwait   0xfffffe0058d30a80  syz-fuzzer
100119                   S       uwait   0xfffffe0008176180  syz-fuzzer
100120                   S       uwait   0xfffffe0058d2fc00  syz-fuzzer
100122                   S       kqread  0xfffffe0058aed900  syz-fuzzer
100172                   S       uwait   0xfffffe00574ff980  syz-fuzzer
107945                   S       uwait   0xfffffe0053eff980  syz-fuzzer
  772   770   772     0  Ss      pause   0xfffffe0053ee5b40  csh
  770   688   770     0  Ss      select  0xfffffe0053c9f1c0  sshd
  754     1   754     0  Ss+     ttyin   0xfffffe00574f80b0  getty
  753     1   753     0  Ss+     ttyin   0xfffffe0053f9e8b0  getty
  752     1   752     0  Ss+     ttyin   0xfffffe00586b70b0  getty
  751     1   751     0  Ss+     ttyin   0xfffffe00586b78b0  getty
  750     1   750     0  Ss+     ttyin   0xfffffe005794e0b0  getty
  749     1   749     0  Ss+     ttyin   0xfffffe005794e8b0  getty
  748     1   748     0  Ss+     ttyin   0xfffffe005794f0b0  getty
  747     1   747     0  Ss+     ttyin   0xfffffe005794f8b0  getty
  746     1   746     0  Ss+     ttyin   0xfffffe00579500b0  getty
  692     1   692     0  Ss      nanslp  0xffffffff83e3aa00  cron
  688     1   688     0  Ss      select  0xfffffe0053c9f8c0  sshd
  501     1   501     0  Ss      select  0xfffffe0053f5be40  syslogd
  430     1   430     0  Ss      wait    0xfffffe0058d88a90  devd
  429     1   429    65  Ss      select  0xfffffe0053c9fcc0  dhclient
  344     1   344     0  Ss      select  0xfffffe0053c9fb40  dhclient
  341     1   341     0  Ss      select  0xfffffe0053c9fac0  dhclient
   17     0     0     0  DL      vlruwt  0xfffffe0058adc548  [vnlru]
   16     0     0     0  DL      syncer  0xffffffff83f60200  [syncer]
   15     0     0     0  DL      (threaded)                  [bufdaemon]
100080                   D       psleep  0xffffffff83f5e7e0  [bufdaemon]
100083                   D       -       0xffffffff83211f80  [bufspacedaemon-0]
100092                   D       sdflush 0xfffffe0058a2ece8  [/ worker]
    9     0     0     0  DL      psleep  0xffffffff83f92280  [vmdaemon]
    8     0     0     0  DL      (threaded)                  [pagedaemon]
100078                   D       psleep  0xffffffff83f86138  [dom0]
100081                   D       launds  0xffffffff83f86144  [laundry: dom0]
100082                   D       umarcl  0xffffffff81e977e0  [uma]
    7     0     0     0  DL      -       0xffffffff83bf6988  [rand_harvestq]
    6     0     0     0  DL      pftm    0xffffffff84b70530  [pf purge]
    5     0     0     0  DL      waiting 0xffffffff849ab4a0  [sctp_iterator]
    4     0     0     0  DL      (threaded)                  [cam]
100045                   D       -       0xffffffff83a988c0  [doneq0]
100046                   D       -       0xffffffff83a98840  [async]
100077                   D       -       0xffffffff83a986c0  [scanner]
   14     0     0     0  DL      seqstat 0xfffffe0056f4ec88  [sequencer 00]
    3     0     0     0  DL      (threaded)                  [crypto]
100041                   D       crypto_ 0xffffffff83f819a0  [crypto]
100042                   D       crypto_ 0xfffffe0053f23d30  [crypto returns 0]
100043                   D       crypto_ 0xfffffe0053f23d80  [crypto returns 1]
   13     0     0     0  DL      (threaded)                  [geom]
100036                   D       -       0xffffffff83e10140  [g_event]
100037                   D       -       0xffffffff83e10160  [g_up]
100038                   D       -       0xffffffff83e10180  [g_down]
    2     0     0     0  RL      (threaded)                  [clock]
100029                   Run     CPU 0                       [clock (0)]
100030                   I                                   [clock (1)]
   12     0     0     0  WL      (threaded)                  [intr]
100011                   I                                   [swi6: task queue]
100012                   I                                   [swi6: Giant taskq]
100019                   I                                   [swi5: fast taskq]
100031                   I                                   [swi1: netisr 0]
100032                   I                                   [swi1: hpts]
100033                   I                                   [swi1: hpts]
100034                   I                                   [swi3: busdma]
100047                   I                                   [irq24: virtio_pci0]
100048                   I                                   [irq25: virtio_pci0]
100049                   I                                   [irq26: virtio_pci0]
100050                   I                                   [irq27: virtio_pci0]
100051                   I                                   [irq28: virtio_pci1]
100052                   I                                   [irq29: virtio_pci1]
100053                   I                                   [irq30: virtio_pci1]
100054                   I                                   [irq31: virtio_pci1]
100055                   I                                   [irq32: virtio_pci1]
100060                   I                                   [irq33: virtio_pci2]
100061                   I                                   [irq34: virtio_pci2]
100062                   I                                   [irq35: virtio_pci2]
100064                   I                                   [irq1: atkbd0]
100065                   I                                   [irq12: psm0]
100066                   I                                   [swi0: uart uart++]
100070                   I                                   [swi1: pf send]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  RLs                                 [init]
   10     0     0     0  DL      audit_w 0xffffffff83f82480  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff83e10b80  [swapper]
100005                   D       -       0xfffffe0053c9a800  [if_io_tqg_0]
100006                   D       -       0xfffffe0053c9a600  [if_io_tqg_1]
100007                   D       -       0xfffffe0053c9a400  [if_config_tqg_0]
100008                   D       -       0xfffffe0053c9a200  [softirq_0]
100009                   D       -       0xfffffe0053c9a000  [softirq_1]
100010                   D       -       0xfffffe000818f000  [pci_hp taskq]
100013                   D       -       0xfffffe000818ec00  [aiod_kick taskq]
100014                   D       -       0xfffffe000818eb00  [linuxkpi_irq_wq]
100015                   D       -       0xfffffe000818ea00  [inm_free taskq]
100016                   D       -       0xfffffe000818e900  [in6m_free taskq]
100017                   D       -       0xfffffe000818e800  [deferred_unmount ta]
100018                   D       -       0xfffffe000818e700  [thread taskq]
100020                   D       -       0xfffffe000818e500  [kqueue_ctx taskq]
100021                   D       -       0xfffffe000818e400  [linuxkpi_short_wq_0]
100022                   D       -       0xfffffe000818e400  [linuxkpi_short_wq_1]
100023                   D       -       0xfffffe000818e400  [linuxkpi_short_wq_2]
100024                   D       -       0xfffffe000818e400  [linuxkpi_short_wq_3]
100025                   D       -       0xfffffe000818e300  [linuxkpi_long_wq_0]
100026                   D       -       0xfffffe000818e300  [linuxkpi_long_wq_1]
100027                   D       -       0xfffffe000818e300  [linuxkpi_long_wq_2]
100028                   D       -       0xfffffe000818e300  [linuxkpi_long_wq_3]
100035                   D       -       0xfffffe0053f59300  [firmware taskq]
100039                   D       -       0xfffffe0053f59100  [crypto_0]
100040                   D       -       0xfffffe0053f59100  [crypto_1]
100056                   D       -       0xfffffe000818fc00  [vtnet0 rxq 0]
100057                   D       -       0xfffffe000818fb00  [vtnet0 txq 0]
100058                   D       -       0xfffffe000818fa00  [vtnet0 rxq 1]
100059                   D       -       0xfffffe000818f900  [vtnet0 txq 1]
100063                   D       vtbslp  0xfffffe0057092680  [virtio_balloon]
100067                   D       -       0xffffffff82ba2941  [deadlkres]
100071                   D       -       0xfffffe000818f100  [mca taskq]
100072                   D       -       0xfffffe00574f0900  [acpi_task_0]
100073                   D       -       0xfffffe00574f0900  [acpi_task_1]
100074                   D       -       0xfffffe00574f0900  [acpi_task_2]
100076                   D       -       0xfffffe0053f58e00  [CAM taskq]
59401   774 59401     0  Z                                   syz-executor.0
db> show all locks
Process 2 (clock) thread 0xfffffe0053eefac0 (100029)
exclusive rw nd6 DAD queue (nd6 DAD queue) r = 0 (0xfffffe0053c67ed0) locked @ /syzkaller/managers/i386/kernel/sys/kern/kern_rwlock.c:178
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
          tcp_hpts            6         4801K            6
            devbuf         4217         4323K         4245
         sysctloid        35454         2089K        35525
             vtbuf           24         1968K           46
              kobj          326         1304K          487
            newblk           11         1027K        70295
          vfscache            3         1025K            3
          filedesc           98          778K       116359
          inodedep          244          604K        59934
               pcb           74          595K       166731
            linker          379          572K          508
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
           subproc          236          473K        59588
              intr            4          472K            4
              vmem            3          274K            6
            acpica         1674          184K        56396
         vnet_data            1          168K            1
           tidhash            3          141K            3
           pagedep           12          131K        58090
        tfo_ccache            1          128K            1
            DEVFS1          109          109K          132
               sem            4          106K            4
               bus          988           81K         3441
         sctp_timw          288           72K          288
          mtx_pool            2           72K            2
               BPF           38           71K          212
          syncache            1           68K            1
          acpitask            1           64K            1
            module          512           64K          512
       ddb_capture            1           64K            1
              umtx          484           61K          484
           kdtrace          314           59K       139349
            dirrem          232           58K        59173
           pf_rule           20           40K           57
               shm            2           34K         1738
              temp           34           33K        31634
           filemon            4           32K          247
            DEVFS3          128           32K          140
         hostcache            1           32K            1
          routetbl          260           31K          768
               msg            4           30K            4
          freefile          227           29K        59103
        gtaskqueue           18           26K           18
         sctp_stro           22           22K        25467
            kbdmux            6           22K            6
            ifaddr           72           21K           92
        DEVFS_RULE           56           20K           56
         sctp_atcl           48           18K       108125
         ufs_mount            4           17K            5
              proc            3           17K            3
               tty           16           16K           16
           ithread          100           16K          100
              ksem           19           16K        13746
           lltable           48           15K          799
             ifnet            8           15K            9
            bus-sc           34           15K         1651
       ether_multi          172           14K          236
            KTRACE          100           13K         1784
              kenv           95           12K           95
      eventhandler          133           12K          133
         in6_multi           81           11K           99
              rman           88           11K          431
              GEOM           61           11K          490
         CAM queue            5           11K         1528
            kqueue          108            9K        59835
         bmsafemap            3            9K        59692
              UART           12            9K           12
           devstat            4            9K            4
               rpc            2            8K            2
             shmfd            1            8K          241
       pfs_vncache            1            8K            1
         pfs_nodes           20            8K           20
     audit_evclass          237            8K          296
              cred           28            7K          608
           pwddesc          105            7K        59649
         taskqueue           63            7K           63
            sglist            5            7K            5
           CAM DEV            3            6K          510
            plimit           23            6K          712
          pf_ifnet           13            5K         1488
       ufs_dirhash           24            5K           24
               UMA          272            5K          272
            DEVFSP           70            5K         6298
           session           35            5K          155
                vt           11            5K           11
         proc-args          132            5K        61225
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
           acpisem           28            4K           28
             lockf           31            4K          142
             hhook           15            4K           17
          kcovinfo           52            4K           78
         sctp_atky           70            3K       134287
             selfd           45            3K       923420
          terminal           11            3K           11
           uidinfo            4            3K           38
          sctp_ifa           17            3K           20
            ip6ndp           13            3K           20
        local_apic            1            2K            1
           io_apic            1            2K            1
       fpukern_ctx            2            2K            2
         ipsec-saq            2            2K            2
            select           16            2K          755
          freework            8            2K        62870
          freeblks            7            2K        58798
            CC Mem           28            2K        55884
            Unitno           29            2K           71
           CAM XPT           22            2K          543
           tcp_fsb           12            2K         6916
               msi           12            2K           12
             mkdir           12            2K       116120
          in_multi            6            2K           10
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
           pf_osfp           11            2K           11
       inpcbpolicy           38            2K        59557
             clone            9            2K            9
               tun            7            2K            9
           softdep            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
             nhops            6            1K            8
       vnodemarker            2            1K          270
      NFSD session            1            1K            1
             mount           19            1K          303
        CAM periph            4            1K          271
               osd           32            1K        55818
          sctp_ifn            6            1K           20
         sctp_athm           48            1K       109046
             ipsec            3            1K            3
         newdirblk            6            1K        58060
            diradd            6            1K        59218
               mld            6            1K            8
              igmp            6            1K            8
         toponodes            6            1K            6
            isadev            6            1K            6
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          sctp_map           44            1K        48378
            crypto            4            1K            4
 encap_export_host           12            1K           12
         sctp_aadr            9            1K          293
              pfil            4            1K            4
          procdesc            4            1K           22
              cdev            2            1K            2
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             DEVFS            9            1K           10
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       lkpikmalloc            5            1K            6
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         cryptodev            2            1K         8210
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            apmdev            1            1K            1
          atkbddev            2            1K            2
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 CAM I/O Scheduler            1            1K            1
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            soname            5            1K       134320
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             sigio            2            1K            5
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              vnet            1            1K            1
           entropy            2            1K           56
               pmc            1            1K            1
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filedesc_to_leader            1            1K           27
              cpus            2            1K            2
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          savedino            0            0K        47527
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            ip6opt            0            0K          210
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            statfs            0            0K        58712
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ag_tgt_map_t malloc            0            0K            0
ag_slr_map_t malloc            0            0K            0
lDevFlags * malloc            0            0K            0
tiDeviceHandle_t * malloc            0            0K            0
ag_portal_data_t malloc            0            0K            0
ag_device_t malloc            0            0K            0
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     tr_raid5_data            0            0K            0
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     tr_raid0_data            0            0K            0
    tr_concat_data            0            0K            0
       md_sii_data            0            0K            0
   md_promise_data            0            0K            0
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   md_jmicron_data            0            0K            0
     md_intel_data            0            0K            0
       md_ddf_data            0            0K            0
         raid_data            0            0K           72
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           NFS FHA            0            0K            0
         newnfsmnt            0            0K            0
  newnfsclient_req            0            0K            0
   NFSCL layrecall            0            0K            0
     NFSCL session            0            0K            0
     NFSCL sockreq            0            0K            0
     NFSCL devinfo            0            0K            0
db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8338    1060     1223930       0     254   38494208        0
         malloc-64     64     194  112891     1039867       0     254    7237440        0
      malloc-32768  32768       0     103         104       0       1    3375104        0
        RADIX NODE    144   14398    4497     1523518       0      64    2720880        0
              mbuf    256    9566     848     5761531       0     254    2665984        0
           tcp_log    416       0    5337      125802       0     254    2220192        0
              pbuf   2624       0     794           0       0       2    2083456        0
      mbuf_cluster   2048    1016       0        1016       0     254    2080768        0
       malloc-4096   4096     440       8       59908       0       2    1835008        0
         sctp_asoc   2288      22     743       24189       0     254    1750320        0
          BUF TRIE    144     200   11588       16206       0      62    1697472        0
        malloc-384    384    4117      53        4118       0      30    1601280        0
        malloc-128    128   11942     303      128326       0     126    1567360        0
        256 Bucket   2048     715      15       12419       0       8    1495040        0
       UMA Slabs 0    112   11711      19       11711       0     126    1313760        0
         vmem btag     56   22113     102       22140       0     254    1244040        0
           sctp_ep   1208      26     994       83014       0     254    1232160        0
      malloc-16384  16384      49       8       58177       0       1     933888        0
             tcpcb   1096      28     735       55807       0     254     836248        0
        malloc-256    256     289    2936      229372       0      62     825600        0
         VM OBJECT    264    2823     207      872618       0      30     799920        0
        malloc-384    384     331    1679      168987       0      30     771840        0
       malloc-2048   2048      35     333       83023       0       8     753664        0
            socket    960      71     693      145968       0     254     733440        0
         FFS inode   1160     566      29       59673       0       8     690200        0
       tcp_bbr_map    128      23    5154      365442       0     126     662656        0
        sctp_raddr    736      25     745       30855       0     254     566720        0
    ertt_txseginfo     40       0   11716     1895695       0     254     468640        0
            THREAD   1808     207      35       79935       0       8     437536        0
         MAP ENTRY     96    3785     625     1842980       0     126     423360        0
            lkpimm    168       1    2327           1       0      62     391104        0
          lkpicurr    168       2    2326           2       0      62     391104        0
             VNODE    448     607      86       59718       0      30     310464        0
        malloc-128    128     872    1546       72430       0     126     309504        0
         malloc-64     64    4322     277        4720       0     254     294336        0
      malloc-65536  65536       4       0           4       0       1     262144        0
      malloc-65536  65536       1       3         346       0       1     262144        0
       malloc-1024   1024      34     222       24207       0      16     262144        0
       mbuf_packet    256     192     824     1515863       0     254     260096        0
         malloc-16     16   14847     403       52425       0     254     244000        0
           VMSPACE   2552      78      15       59371       0       4     237336        0
            DEVCTL   1024      18     202         182       0       0     225280        0
        malloc-256    256     228     642      136067       0      62     222720        0
     FPU_save_area    832     209      52       89178       0      16     217152        0
        128 Bucket   1024     143      52       15461       0      16     199680        0
      malloc-65536  65536       0       3           4       0       1     196608        0
      malloc-65536  65536       3       0           3       0       1     196608        0
      malloc-32768  32768       0       6        6405       0       1     196608        0
        malloc-256    256     586     164       84142       0      62     192000        0
         UMA Zones    768     244       0         244       0      16     187392        0
         malloc-32     32    5398     272        8744       0     254     181440        0
        malloc-128    128    1169     226       26325       0     126     178560        0
              PROC   1352     105      24       59412       0       8     174408        0
       FFS2 dinode    256     566      64       59673       0      62     161280        0
       S VFS Cache    104    1105     416       63688       0     126     158184        0
       malloc-1024   1024     126      18         149       0      16     147456        0
         filedesc0   1072     105      28       59649       0       8     142576        0
      malloc-65536  65536       0       2        1260       0       1     131072        0
      malloc-32768  32768       1       3         121       0       1     131072        0
             unpcb    256      19     491        3285       0     254     130560        0
        malloc-256    256      59     451       83093       0      62     130560        0
              pipe    744      23     137        2875       0      16     119040        0
        sctp_chunk    152      19     761        3989       0     254     118560        0
          ksiginfo    112     119     925       10833       0     126     116928        0
       malloc-4096   4096      19       9          53       0       2     114688        0
         64 Bucket    512     143      57       23503       0      30     102400        0
        malloc-128    128     597     178       13994       0     126      99200        0
       malloc-8192   8192       7       5         253       0       1      98304        0
         tcp_inpcb    424      28     188       55807       0      30      91584        0
          UMA Kegs    384     230       3         230       0      30      89472        0
sctp_stream_msg_out    112      13     779        7061       0     254      88704        0
             g_bio    408       0     210      109755       0      30      85680        0
      malloc-16384  16384       3       2           7       0       1      81920        0
       malloc-2048   2048      25      15          57       0       8      81920        0
       malloc-2048   2048       7      33        2799       0       8      81920        0
        malloc-384    384     184      26         193       0      30      80640        0
         32 Bucket    256     150     165       14213       0      62      80640        0
        sctp_readq    152       0     520        2890       0     254      79040        0
       malloc-8192   8192       6       3         162       0       1      73728        0
       malloc-4096   4096      15       3         144       0       2      73728        0
         malloc-64     64     264     807      145567       0     254      68544        0
         malloc-64     64     517     554        7488       0     254      68544        0
      malloc-65536  65536       1       0           1       0       1      65536        0
      malloc-65536  65536       0       1           8       0       1      65536        0
      malloc-65536  65536       1       0           1       0       1      65536        0
      malloc-32768  32768       2       0           2       0       1      65536        0
             ripcb    424       4     149        2130       0      30      64872        0
         udp_inpcb    424       6     147        1088       0      30      64872        0
             Files     80     250     550      262122       0     126      64000        0
        malloc-512    512       9     111         204       0      30      61440        0
     udplite_inpcb    424       0     126         532       0      30      53424        0
         malloc-64     64     375     444         411       0     254      52416        0
         malloc-64     64     108     711       12535       0     254      52416        0
        malloc-256    256      16     179        2399       0      62      49920        0
           DIRHASH   1024      34      14          34       0      16      49152        0
             NAMEI   1024       0      48      273468       0      16      49152        0
      malloc-16384  16384       0       3         160       0       1      49152        0
      malloc-16384  16384       2       1          17       0       1      49152        0
       malloc-8192   8192       6       0           6       0       1      49152        0
       malloc-2048   2048       5      19         306       0       8      49152        0
       malloc-1024   1024      12      36        5559       0      16      49152        0
           pcpu-64     64     494     274         494       0     254      49152        0
      tcp_rack_pcb    896      12      42        6916       0      16      48384        0
            pcpu-8      8    4945     687       29920       0     254      45056        0
       tcp_bbr_pcb    832      10      44       14298       0      16      44928        0
          syncache    168       0     264           4       0     254      44352        0
         malloc-32     32     270    1116      107922       0     254      44352        0
            clpbuf   2624       0      16          28       0      16      41984        0
       malloc-8192   8192       3       2           6       0       1      40960        0
        sctp_laddr     48      14     826       44506       0     254      40320        0
            da_ccb    544       0      70       27554       0      16      38080        0
         malloc-64     64      71     496        3178       0     254      36288        0
         malloc-64     64      93     474       23902       0     254      36288        0
         16 Bucket    144     101     151        1898       0      62      36288        0
        malloc-128    128      43     236       58371       0     126      35712        0
        malloc-128    128     108     171        5280       0     126      35712        0
        malloc-128    128      74     205       60596       0     126      35712        0
        malloc-128    128     144     135         302       0     126      35712        0
            itimer    352       0      99         127       0      30      34848        0
     routing nhops    256      28     107          44       0      62      34560        0
           ttyoutq    256      72      63         160       0      62      34560        0
        malloc-256    256      18     117       58141       0      62      34560        0
        malloc-256    256      49      86        2247       0      62      34560        0
        malloc-256    256      71      64        5595       0      62      34560        0
         TURNSTILE    136     243       9         243       0      62      34272        0
      malloc-32768  32768       1       0           1       0       1      32768        0
      malloc-16384  16384       2       0           2       0       1      32768        0
       malloc-8192   8192       2       2          17       0       1      32768        0
       malloc-8192   8192       2       2          31       0       1      32768        0
       malloc-4096   4096       5       3          22       0       2      32768        0
       malloc-4096   4096       2       6       59337       0       2      32768        0
       malloc-2048   2048       8       8          33       0       8      32768        0
       malloc-2048   2048       0      16          52       0       8      32768        0
       malloc-2048   2048       2      14         284       0       8      32768        0
       malloc-1024   1024       0      32           3       0      16      32768        0
       malloc-1024   1024      14      18          27       0      16      32768        0
       malloc-1024   1024       5      27        3815       0      16      32768        0
       malloc-1024   1024       9      23           9       0      16      32768        0
       malloc-1024   1024       1      31        3735       0      16      32768        0
        malloc-512    512       2      62         415       0      30      32768        0
        malloc-512    512       8      56        1853       0      30      32768        0
        malloc-512    512       5      59          54       0      30      32768        0
        malloc-512    512       0      64        1293       0      30      32768        0
             KNOTE    160      26     174      673093       0      62      32000        0
            ttyinq    160     135      65         300       0      62      32000        0
          8 Bucket     80      88     312       13697       0     126      32000        0
      tcp_rack_map    120      24     240       10205       0     126      31680        0
      tcp_log_node    120       0     264           5       0     126      31680        0
            cpuset    104       7     272         103       0     126      29016        0
   tcp_inpcb ports     32       3     879       18665       0     254      28224        0
              ertt     72      28     364       55807       0     126      28224        0
               PWD     32      55     827       58086       0     254      28224        0
         malloc-32     32      72     810       98650       0     254      28224        0
         malloc-32     32     130     752       60449       0     254      28224        0
          4 Bucket     48       7     581        1182       0     254      28224        0
          2 Bucket     32     129     753        6931       0     254      28224        0
               AIO    208       2     131        2882       0      62      27664        0
           rtentry    176      32     106          44       0      62      24288        0
    tcp_log_bucket    176       0     138           5       0      62      24288        0
              PGRP     88      35     241         181       0     126      24288        0
          rl_entry     40     117     489         119       0     254      24240        0
        malloc-384    384      52       8          75       0      30      23040        0
        malloc-384    384      20      40         368       0      30      23040        0
        malloc-384    384       2      58           2       0      30      23040        0
        malloc-384    384       1      59        2284       0      30      23040        0
         domainset     40       0     567          90       0     254      22680        0
        SLEEPQUEUE     88     243      13         243       0     126      22528        0
         hostcache     64       2     313           2       0     254      20160        0
             udpcb     32       6     624        1620       0     254      20160        0
udplite_inpcb ports     32       0     630          58       0     254      20160        0
   udp_inpcb ports     32       3     627          76       0     254      20160        0
         malloc-32     32      33     597        2791       0     254      20160        0
         malloc-32     32     150     480        5288       0     254      20160        0
         malloc-32     32     269     361        4988       0     254      20160        0
         malloc-32     32      30     600        4748       0     254      20160        0
         malloc-16     16      93    1157      164929       0     254      20000        0
         malloc-16     16      71    1179       49486       0     254      20000        0
             AIOCB    552       0      35       12569       0      16      19320        0
       Mountpoints   2752       2       5           2       0       4      19264        0
            AIOLIO    272       0      70        3385       0      30      19040        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-8192   8192       2       0           2       0       1      16384        0
       malloc-4096   4096       0       4           5       0       2      16384        0
       malloc-2048   2048       2       6         193       0       8      16384        0
        malloc-512    512       0      32           2       0      30      16384        0
        malloc-512    512       2      30           2       0      30      16384        0
           SMR CPU     32       7     504           7       0     254      16352        0
      vtnet_tx_hdr     24       0     668      986145       0     254      16032        0
         malloc-16     16      97     903       62254       0     254      16000        0
              kenv    258      15      45        1047       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
              AIOP     32       4     374           4       0     254      12096        0
         malloc-16     16      16     734       23417       0     254      12000        0
         malloc-16     16      37     713       91944       0     254      12000        0
         malloc-16     16      47     703          69       0     254      12000        0
         malloc-16     16     274     476       26160       0     254      12000        0
        malloc-384    384       0      30           3       0      30      11520        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-4096   4096       1       1           1       0       2       8192        0
       malloc-4096   4096       0       2           1       0       2       8192        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      15      24          20       0       0       3744        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      62          0        0
pf table entry counters     64       0       0           0       0     254          0        0
   pf source nodes    136       0       0           0       0     254          0        0
     pf state keys     88       0       0           0       0     126          0        0
         pf states    312       0       0           0       0       0          0        0
           pf tags    104       0       0           0       0     126          0        0
          pf mtags     48       0       0           0       0     254          0        0
               ipq     56       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     72       0       0           0       0     254          0        0
          tcpreass     48       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
       ripcb ports     32       0       0           0       0     254          0        0
    IPsec SA lft_c     16       0       0           0       0     254          0        0
        mqnotifier    216       0       0           0       0      62          0        0
            mvdata     64       0       0           0       0     254          0        0
            mqueue    248       0       0           0       0      62          0        0
        TMPFS node    224       0       0           0       0      62          0        0
           NCLNODE    608       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     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
        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-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-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 (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/02/09 14:38 freebsd-src ff5025d10450 0b33604d console log report ci-freebsd-i386 Fatal trap NUM: page fault in nd6_dad_timer
* Struck through repros no longer work on HEAD.