syzbot


Fatal trap NUM: page fault in mld_change_state

Status: upstream: reported on 2025/03/01 23:46
Reported-by: syzbot+0375ef1e774d247be26e@syzkaller.appspotmail.com
First crash: 184d, last: 12d

Sample crash report:
Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address	= 0x28
fault code		= supervisor read data, page not present
instruction pointer	= 0x20:0xffffffff81ab4d2e
stack pointer	        = 0x28:0xfffffe00570343c0
frame pointer	        = 0x28:0xfffffe0057034550
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		= 1807 (syz-executor)
rdi: 0000000000000028 rsi: 0000000000000000 rdx: 0000000000000000
rcx: fffffe0002bf1850  r8: 0000000000000000  r9: 0000000000000001
rax: fffffe0000000000 rbx: 1fffffc00ae06880 rbp: fffffe0057034550
r10: 0000000000000000 r11: 0000000000000000 r12: fffffe0058260810
r13: dffff7c000000000 r14: 0000000000000000 r15: fffffe007d94f800
trap number		= 12
panic: page fault
cpuid = 1
time = 1755686355
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0057033bf0
kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0057033d50
vpanic() at vpanic+0x257/frame 0xfffffe0057033f10
panic() at panic+0xb5/frame 0xfffffe0057033fd0
trap_pfault() at trap_pfault+0xaf2/frame 0xfffffe0057034110
trap() at trap+0x78e/frame 0xfffffe00570342f0
calltrap() at calltrap+0x8/frame 0xfffffe00570342f0
--- trap 0xc, rip = 0xffffffff81ab4d2e, rsp = 0xfffffe00570343c0, rbp = 0xfffffe0057034550 ---
mld_change_state() at mld_change_state+0x13e/frame 0xfffffe0057034550
in6_leavegroup_locked() at in6_leavegroup_locked+0x17b/frame 0xfffffe0057034680
ip6_freemoptions() at ip6_freemoptions+0x282/frame 0xfffffe00570346e0
in_pcbfree() at in_pcbfree+0x682/frame 0xfffffe0057034730
sorele_locked() at sorele_locked+0x264/frame 0xfffffe0057034770
soclose() at soclose+0x41f/frame 0xfffffe0057034860
_fdrop() at _fdrop+0x5c/frame 0xfffffe0057034890
closef() at closef+0x655/frame 0xfffffe0057034a70
fdescfree() at fdescfree+0xa5e/frame 0xfffffe0057034c50
exit1() at exit1+0x887/frame 0xfffffe0057034cf0
sys__exit() at sys__exit+0x28/frame 0xfffffe0057034d10
amd64_syscall() at amd64_syscall+0x4e2/frame 0xfffffe0057034f30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0057034f30
--- syscall (1, FreeBSD ELF64, _exit), rip = 0x3a1f5a, rsp = 0x820fdd198, rbp = 0x820fdd1a0 ---
KDB: enter: panic
[ thread pid 1807 tid 101147 ]
Stopped at      kdb_enter+0x6e: movq    $0,0x25b6f77(%rip)
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b
es                        0x3b
fs                        0x13
gs                        0x1b
ss                        0x28
rax                       0x12
rcx         0xfffffe0002bf1850
rdx                          0
rbx         0xffffffff827e1820  .str.27
rsp         0xfffffe0057033d30
rbp         0xfffffe0057033d50
rsi                          0
rdi         0xffffffff816260e9  printf+0x149
r8                           0
r9                  0xffffffff
r10                          0
r11                       0x17
r12         0xfffffe00541d6000
r13         0xfffffffffffffffd
r14         0xffffffff827e1820  .str.27
r15                          0
rip         0xffffffff8160fc1e  kdb_enter+0x6e
rflags                    0x46
kdb_enter+0x6e: movq    $0,0x25b6f77(%rip)
db> show proc
Process 1807 (syz-executor) at 0xfffffe005400b008:
 state: NORMAL
 uid: 0  gids: 0, 5
 parent: pid 766 at 0xfffffe00540cc560
 ABI: FreeBSD ELF64
 flag: 0x10002000  flag2: 0x40000
 arguments: ./syz-executor exec
 reaper: 0xfffffe0007809010 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffffe0054153b68
   (map 0xfffffe0054153b68)
   (map.pmap 0xfffffe0054153c08)
   (pmap 0xfffffe0054153c78)
 threads: 1
101147                   Run     CPU 1                       syz-executor
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 1807   766   766     0  RE      CPU 1                       syz-executor
 1804   762  1804     0  R                                   syz-executor
 1787     1   764     0  S       uwait   0xfffffe00596e7900  syz-executor
 1755     1   766     0  S       uwait   0xfffffe006de08b80  syz-executor
 1722     1   764     0  S       uwait   0xfffffe007ad42400  syz-executor
 1698     1   764     0  S       uwait   0xfffffe007aed3c00  syz-executor
 1656     1   764     0  S       uwait   0xfffffe007ad42700  syz-executor
 1589     1   764     0  S       uwait   0xfffffe006de09300  syz-executor
 1586     1   766     0  S       uwait   0xfffffe006de09280  syz-executor
 1554     1   766     0  S       uwait   0xfffffe00598e0000  syz-executor
 1553     1   766     0  S       uwait   0xfffffe007aed2880  syz-executor
 1541     1   766     0  S       uwait   0xfffffe007aed1c00  syz-executor
 1520     1   766     0  S       uwait   0xfffffe007ad44580  syz-executor
 1509     1   766     0  S       uwait   0xfffffe006de0aa00  syz-executor
 1497     1   766     0  S       uwait   0xfffffe007aed2780  syz-executor
 1475     1   766     0  S       uwait   0xfffffe00598dfc80  syz-executor
 1455  1443  1455     0  Ss      select  0xfffffe007aed0b40  dhclient
 1448     1  1448     0  Ss      select  0xfffffe007deaf0c0  dhclient
 1443  1430   423    65  S       select  0xfffffe007deaf140  dhclient
 1430   423   423     0  S       wait    0xfffffe0054160000  sh
 1394     1   766     0  T                                   syz-executor
 1386     0     0     0  DL      -       0xffffffff83cb7e00  [soaiod4]
 1385     0     0     0  DL      -       0xffffffff83cb7e00  [soaiod3]
 1384     0     0     0  DL      -       0xffffffff83cb7e00  [soaiod2]
 1383     0     0     0  DL      -       0xffffffff83cb7e00  [soaiod1]
 1358     0     0     0  DL      mdwait  0xfffffe0059839000  [md4]
 1295     0     0     0  DL      mdwait  0xfffffe007d74d000  [md3]
 1232     1   764     0  S       uwait   0xfffffe007ad43900  syz-executor
 1177     1   766     0  T                                   syz-executor
 1113     0     0     0  DL      mdwait  0xfffffe00778ac000  [md2]
 1083     0     0     0  DL      mdwait  0xfffffe00778ad000  [md1]
  938   937   766     0  SV      lockf   0xfffffe0057d76500  syz-executor
  937     1   766     0  DV      ppwait  0xfffffe0054125a58  syz-executor
  906     0     0     0  DL      (threaded)                  [so_splice]
100130                   D       -       0xfffffe0058587800  [thr_0]
100204                   D       -       0xfffffe0058587840  [thr_1]
  900     0     0     0  DL      mdwait  0xfffffe005983a000  [md127]
  871     0     0     0  DL      (threaded)                  [KTLS]
100142                   D       -       0xfffffe0053ef5600  [thr_0]
100152                   D       -       0xfffffe0053ef5680  [thr_1]
100153                   D       -       0xffffffff83cb9628  [reclaim_0]
  817     0     0     0  DL      aiordy  0xfffffe00540cbab0  [aiod4]
  816     0     0     0  DL      aiordy  0xfffffe005410aab8  [aiod3]
  815     0     0     0  DL      aiordy  0xfffffe005410b010  [aiod2]
  814     0     0     0  DL      aiordy  0xfffffe00540cb558  [aiod1]
  766   762   766     0  R                                   syz-executor
  764   762   764     0  S       piperd  0xfffffe00598378a0  syz-executor
  762   760   760     0  S       nanslp  0xffffffff83ba7c40  syz-executor
  760   758   760     0  Ss      sigsusp 0xfffffe00540ce620  csh
  758     1   758     0  Ss      select  0xfffffe00598dfd40  sshd
  747     1   747     0  Ss+     ttyin   0xfffffe00077fd8b0  getty
  746     1   746     0  Ss+     ttyin   0xfffffe00077fc4b0  getty
  745     1   745     0  Ss+     ttyin   0xfffffe00585bd4b0  getty
  744     1   744     0  Ss+     ttyin   0xfffffe00077fc8b0  getty
  743     1   743     0  Ss+     ttyin   0xfffffe00585bd8b0  getty
  742     1   742     0  Ss+     ttyin   0xfffffe00585bdcb0  getty
  741     1   741     0  Ss+     ttyin   0xfffffe00585be0b0  getty
  740     1   740     0  Ss+     ttyin   0xfffffe00585be4b0  getty
  739     1   739     0  Ss+     ttyin   0xfffffe00585be8b0  getty
  494     1   494     0  Ss      select  0xfffffe006de0a240  syslogd
  423     1   423     0  Ss      wait    0xfffffe005400bab8  devd
   16     0     0     0  DL      syncer  0xffffffff83cc5820  [syncer]
   15     0     0     0  DL      vlruwt  0xfffffe0054005018  [vnlru]
   14     0     0     0  DL      (threaded)                  [bufdaemon]
100079                   D       psleep  0xffffffff83cc3d60  [bufdaemon]
100082                   D       -       0xffffffff83001ec0  [bufspacedaemon-0]
100092                   D       sdflush 0xfffffe0053fe08e8  [/ worker]
    9     0     0     0  DL      psleep  0xffffffff83d0ec80  [vmdaemon]
    8     0     0     0  DL      (threaded)                  [pagedaemon]
100077                   D       psleep  0xffffffff83cf4d48  [dom0]
100080                   D       launds  0xffffffff83cf4d54  [laundry: dom0]
100081                   D       umarcl  0xffffffff81df2890  [uma]
    7     0     0     0  DL      -       0xffffffff839205d8  [rand_harvestq]
    6     0     0     0  DL      pftm    0xffffffff843d7c30  [pf purge]
    5     0     0     0  DL      waiting 0xffffffff84901700  [sctp_iterator]
    4     0     0     0  DL      (threaded)                  [cam]
100045                   D       -       0xffffffff838ea340  [doneq0]
100046                   D       -       0xffffffff838ea2c0  [async]
100075                   D       -       0xffffffff838ea140  [scanner]
    3     0     0     0  DL      (threaded)                  [crypto]
100042                   D       crypto_ 0xffffffff83cf0640  [crypto]
100043                   D       crypto_ 0xfffffe0007a95c30  [crypto returns 0]
100044                   D       crypto_ 0xfffffe0007a95c80  [crypto returns 1]
   13     0     0     0  DL      (threaded)                  [geom]
100037                   D       -       0xffffffff83b50640  [g_event]
100038                   D       -       0xffffffff83b50660  [g_up]
100039                   D       -       0xffffffff83b50680  [g_down]
    2     0     0     0  TL      (threaded)                  [clock]
100031                   L      *in6_mul 0xfffffe0007805b40  [clock (0)]
100032                   I                                   [clock (1)]
   12     0     0     0  RL      (threaded)                  [intr]
100013                   I                                   [swi6: task queue]
100014                   I                                   [swi6: Giant taskq]
100016                   I                                   [swi5: fast taskq]
100033                   I                                   [swi1: netisr 0]
100034                   I                                   [swi1: hpts]
100035                   Run     CPU 0                       [swi1: hpts]
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                                   [irq10: virtio_pci2]
100062                   I                                   [irq1: atkbd0]
100063                   I                                   [irq12: psm0]
100064                   RunQ                                [swi0: uart uart++]
100068                   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    0xfffffe0007809010  [init]
   10     0     0     0  DL      audit_w 0xffffffff83cf10e0  [audit]
    0     0     0     0  RLs     (threaded)                  [kernel]
100000                   D       parked  0xffffffff84c43ff0  [swapper]
100005                   D       -       0xfffffe0007a98b00  [softirq_0]
100006                   RunQ                                [softirq_1]
100007                   D       -       0xfffffe0007a98700  [if_io_tqg_0]
100008                   D       -       0xfffffe0007a98500  [if_io_tqg_1]
100009                   D       -       0xfffffe0007a98300  [if_config_tqg_0]
100010                   D       -       0xfffffe00083f9700  [kqueue_ctx taskq]
100011                   D       -       0xfffffe00083f9600  [jail_remove taskq]
100012                   D       -       0xfffffe00083f9500  [bus taskq]
100015                   D       -       0xfffffe00083f9000  [thread taskq]
100017                   D       -       0xfffffe00083f8c00  [aiod_kick taskq]
100018                   D       -       0xfffffe00083f8b00  [deferred_unmount ta]
100019                   D       -       0xfffffe00083f8a00  [inm_free taskq]
100020                   D       -       0xfffffe00083f8900  [in6m_free taskq]
100021                   D       -       0xfffffe00083f8800  [linuxkpi_irq_wq]
100022                   D       -       0xfffffe00083f8700  [linuxkpi_short_wq_0]
100023                   D       -       0xfffffe00083f8700  [linuxkpi_short_wq_1]
100024                   D       -       0xfffffe00083f8700  [linuxkpi_short_wq_2]
100025                   D       -       0xfffffe00083f8700  [linuxkpi_short_wq_3]
100026                   D       -       0xfffffe00083f8600  [linuxkpi_long_wq_0]
100027                   D       -       0xfffffe00083f8600  [linuxkpi_long_wq_1]
100028                   D       -       0xfffffe00083f8600  [linuxkpi_long_wq_2]
100029                   D       -       0xfffffe00083f8600  [linuxkpi_long_wq_3]
100036                   D       -       0xfffffe00083f8100  [firmware taskq]
100040                   D       -       0xfffffe00083f7e00  [crypto_0]
100041                   D       -       0xfffffe00083f7e00  [crypto_1]
100056                   D       -       0xfffffe00083f7700  [vtnet0 rxq 0]
100057                   D       -       0xfffffe00083f7600  [vtnet0 txq 0]
100058                   D       -       0xfffffe00083f7500  [vtnet0 rxq 1]
100059                   D       -       0xfffffe00083f7400  [vtnet0 txq 1]
100061                   D       vtbslp  0xfffffe0057d76f00  [virtio_balloon]
100065                   RunQ                                [deadlkres]
100069                   D       -       0xfffffe00593db000  [acpi_task_0]
100070                   D       -       0xfffffe00593db000  [acpi_task_1]
100071                   D       -       0xfffffe00593db000  [acpi_task_2]
100073                   D       -       0xfffffe00083fb100  [mca taskq]
100074                   D       -       0xfffffe00083f7d00  [CAM taskq]
100076                   D       -       0xfffffe005825fe00  [ipsec_offload]
100476                   D       -       0xfffffe005825fd00  [system_taskq_0]
100477                   D       -       0xfffffe005825fd00  [system_taskq_1]
100478                   D       -       0xfffffe005825d400  [system_delay_taskq_]
100479                   D       -       0xfffffe005825d400  [system_delay_taskq_]
100480                   D       -       0xfffffe005825f400  [zvol_tq-0_0]
100481                   D       -       0xfffffe005825f400  [zvol_tq-0_1]
100482                   D       -       0xfffffe005825f400  [zvol_tq-0_2]
100483                   D       -       0xfffffe005825f400  [zvol_tq-0_3]
100484                   D       -       0xfffffe005825f400  [zvol_tq-0_4]
100485                   D       -       0xfffffe005825f400  [zvol_tq-0_5]
100486                   D       -       0xfffffe005825f400  [zvol_tq-0_6]
100487                   D       -       0xfffffe005825f400  [zvol_tq-0_7]
100488                   D       -       0xfffffe005825f400  [zvol_tq-0_8]
100489                   D       -       0xfffffe005825f400  [zvol_tq-0_9]
100490                   D       -       0xfffffe005825f400  [zvol_tq-0_10]
100491                   D       -       0xfffffe005825f400  [zvol_tq-0_11]
100492                   D       -       0xfffffe005825f400  [zvol_tq-0_12]
100493                   D       -       0xfffffe005825f400  [zvol_tq-0_13]
100494                   D       -       0xfffffe005825f400  [zvol_tq-0_14]
100495                   D       -       0xfffffe005825f400  [zvol_tq-0_15]
100496                   D       -       0xfffffe005825f400  [zvol_tq-0_16]
100497                   D       -       0xfffffe005825f400  [zvol_tq-0_17]
100498                   D       -       0xfffffe005825f400  [zvol_tq-0_18]
100499                   D       -       0xfffffe005825f400  [zvol_tq-0_19]
100500                   D       -       0xfffffe005825f400  [zvol_tq-0_20]
100501                   D       -       0xfffffe005825f400  [zvol_tq-0_21]
100502                   D       -       0xfffffe005825f400  [zvol_tq-0_22]
100503                   D       -       0xfffffe005825f400  [zvol_tq-0_23]
100504                   D       -       0xfffffe005825f400  [zvol_tq-0_24]
100505                   D       -       0xfffffe005825f400  [zvol_tq-0_25]
100506                   D       -       0xfffffe005825f400  [zvol_tq-0_26]
100507                   D       -       0xfffffe005825f400  [zvol_tq-0_27]
100508                   D       -       0xfffffe005825f400  [zvol_tq-0_28]
100509                   D       -       0xfffffe005825f400  [zvol_tq-0_29]
100510                   D       -       0xfffffe005825f400  [zvol_tq-0_30]
100511                   D       -       0xfffffe005825f400  [zvol_tq-0_31]
100513                   D       -       0xfffffe00593da500  [arc_prune]
100514                   D       -       0xfffffe005825d100  [arc_flush_0]
100515                   D       -       0xfffffe005825d100  [arc_flush_1]
100523                   D       -       0xfffffe00593dab00  [dbu_evict]
100543                   D       -       0xfffffe00593da100  [z_vdev_file_0]
100544                   D       -       0xfffffe00593da100  [z_vdev_file_1]
100545                   D       -       0xfffffe00593da100  [z_vdev_file_2]
100546                   D       -       0xfffffe00593da100  [z_vdev_file_3]
100547                   D       -       0xfffffe00593da100  [z_vdev_file_4]
100548                   D       -       0xfffffe00593da100  [z_vdev_file_5]
100549                   D       -       0xfffffe00593da100  [z_vdev_file_6]
100550                   D       -       0xfffffe00593da100  [z_vdev_file_7]
100551                   D       -       0xfffffe00593da100  [z_vdev_file_8]
100552                   D       -       0xfffffe00593da100  [z_vdev_file_9]
100553                   D       -       0xfffffe00593da100  [z_vdev_file_10]
100554                   D       -       0xfffffe00593da100  [z_vdev_file_11]
100555                   D       -       0xfffffe00593da100  [z_vdev_file_12]
100556                   D       -       0xfffffe00593da100  [z_vdev_file_13]
100557                   D       -       0xfffffe00593da100  [z_vdev_file_14]
100558                   D       -       0xfffffe00593da100  [z_vdev_file_15]
100581                   D       -       0xfffffe005825d200  [zfsvfs]
db> show all locks
Process 1807 (syz-executor) thread 0xfffffe00541d6000 (101147)
exclusive sleep mutex mld_mtx (mld_mtx) r = 0 (0xffffffff83cebd80) locked @ /syzkaller/managers/main/kernel/sys/netinet6/mld6.c:1901
exclusive sleep mutex in6_multi_list_mtx (in6_multi_list_mtx) r = 0 (0xffffffff83cebba0) locked @ /syzkaller/managers/main/kernel/sys/netinet6/in6_mcast.c:1387
exclusive sx in6_multi_sx (in6_multi_sx) r = 0 (0xffffffff83cebbe0) locked @ /syzkaller/managers/main/kernel/sys/netinet6/in6_mcast.c:1330
Process 1804 (syz-executor) thread 0xfffffe0054139000 (100280)
shared lockmgr devfs (devfs) r = 0 (0xfffffe0059660908) locked @ /syzkaller/managers/main/kernel/sys/fs/devfs/devfs_vnops.c:375
Process 2 (clock) thread 0xfffffe000781a780 (100031)
shared rw vnet_rwlock (vnet_rwlock) r = 0 (0xffffffff83cc9de0) locked @ /syzkaller/managers/main/kernel/sys/netinet6/mld6.c:1307
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            6        12804K            6
            linker          445        12773K          971
          tcp_hpts            7         4801K            7
            devbuf         4187         4323K         4224
        md_sectors         1031         4124K         1033
           solaris         2247         3597K         4473
         sysctloid        45382         2666K        45728
             vtbuf           24         1968K           46
              kobj          331         1324K          575
              vmem            5         1044K           11
            newblk           32         1032K         3900
          vfscache            3         1025K            3
               pcb           50          693K          672
          inodedep           49          530K         1452
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          228          351K         1977
          filedesc           44          345K         1806
         vnet_data            2          224K            2
          acpitask            1          224K            1
            KTRACE          101          201K      1076947
            acpica         1674          184K        54468
           tidhash            3          141K            3
           pagedep           40          138K          697
        tfo_ccache            1          128K            1
          IP reass            1          128K            1
            DEVFS1          112          112K          240
               sem            4          106K            4
        gtaskqueue           18           98K           18
               LRO           86           87K          160
               bus         1011           83K         5121
              umtx          608           76K          608
           kdtrace          352           75K         3131
          mtx_pool            3           74K            3
          syncache            1           68K            1
     NFSD srvcache            3           68K            3
            module          529           67K          538
          routetbl         1672           65K         5224
       ddb_capture            1           64K            1
           md_disk         1036           53K         1044
            DEVFS3          130           33K          179
         hostcache            1           32K            1
               shm            1           32K           14
               msg            4           30K            4
            kbdmux            6           28K            6
              temp           31           21K         4450
               BPF           17           20K          125
        DEVFS_RULE           56           20K           56
        kstat_data           19           19K           19
            ifaddr           64           18K          391
         ufs_mount            4           17K            5
              proc            3           17K            3
               tty           16           16K           16
              GEOM           74           16K          638
           ithread           90           15K           90
            bus-sc           34           15K         1669
             ifnet            8           15K           43
      eventhandler          166           14K          166
           devstat            6           13K            6
             shmfd           10           12K           30
              cred           31           12K          387
              kenv           95           12K           95
              ksem            9           11K           15
           lltable           35           11K          340
         CAM queue            5           11K         1528
         taskqueue           93           10K          180
       ether_multi          123           10K         1183
              rman           82           10K          477
               rpc            8            9K            8
         bmsafemap            3            9K         1182
              UART           12            9K           12
       pfs_vncache            1            8K            1
          pf_ifnet           25            8K          201
     audit_evclass          240            8K          304
            plimit           20            8K          623
         sctp_stro            7            7K           18
         in6_multi           49            7K          418
         sctp_atcl           17            7K          221
               UMA          344            7K          346
            sglist            6            7K            6
           CAM DEV            3            6K          510
          sctp_ifa           46            6K           84
         pfs_nodes           22            6K           22
             mkdir           41            6K         1264
            diradd           38            5K         1096
       ufs_dirhash           24            5K           39
            kqueue           74            5K         2445
           pwddesc           72            5K         1949
      tcp_fsb_rack            2            5K           20
                vt           11            5K           11
          pf_table            2            4K            3
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
         newdirblk           31            4K          632
           acpisem           28            4K           28
             mount           20            4K         1318
          terminal           11            3K           11
             lockf           27            3K          280
           uidinfo            5            3K           18
           acpidev           20            3K           20
            DEVFSP           38            3K          553
             hhook            8            3K           10
         proc-args           80            3K         3886
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           pf_rule            2            3K            3
            crypto            7            3K           78
           netlink            2            3K          791
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         ipsec-saq            2            2K            2
           session           16            2K           80
            Unitno           32            2K          305
               osd           71            2K          681
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           CAM XPT           22            2K          543
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               tun            4            2K           40
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            ip6ndp           10            2K           85
             selfd           21            2K        93333
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            biobuf            1            1K            1
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 CAM I/O Scheduler            1            1K            1
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filedesc_to_leader            1            1K           13
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            aaccam            0            0K            0
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              zstd            0            0K            0
            XZ_DEC            0            0K            0
            nvlist            0            0K          525
          SCSI ENC            0            0K            0
           SCSI sa            0            0K            0
         scsi_pass            0            0K            0
           scsi_da            0            0K           70
            ata_da            0            0K            0
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           CAM CCB            0            0K          523
     CAM ccb queue            0            0K            0
db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8347    1051       15152       0     254   38494208        0
    ertt_txseginfo     40       0  293405      302135       0     254   11736200        0
           tcp_log    416    6696   18963       46674       0     254   10674144        0
         vmem btag     56   92431     128       92474       0     254    5183304        0
       malloc-4096   4096    1032       2        1048       0       2    4235264        0
        256 Bucket   2048    1457      15        9548       0       8    3014656        0
        RADIX NODE    152   12567    4068       93666       0      62    2528520        0
              mbuf    256    8743     919      333586       0     254    2473472        0
        malloc-128    128   15994     281       18562       0     126    2083200        0
       malloc-4096   4096     416      80        2827       0       2    2031616        0
          BUF TRIE    152     360   11444        3619       0      62    1794208        0
        malloc-384    384    4217      43        4306       0      30    1635840        0
      mbuf_cluster   2048     508     254         509       0     254    1560576        0
       UMA Slabs 0    112   13244      34       13260       0     126    1487136        0
      malloc-16384  16384      21      66        1071       0       1    1425408        0
         malloc-64     64    4873   17240       98280       0     254    1415232        0
         sctp_asoc   2256       7     503          18       0     254    1150560        0
      malloc-65536  65536      14       1          18       0       1     983040        0
            socket   1024      48     716        3764       0     254     782336        0
         FFS inode   1168     640      25        1572       0       8     776720        0
        malloc-256    256    2191     359       11448       0      62     652800        0
            DEVCTL   1024     474     102         605       0       0     589824        0
           sctp_ep   1152      10     501         196       0     254     588672        0
            THREAD   1860     278      26        1320       0       8     565440        0
               md3      1  524296     216      524296       0     254     524512        0
         VM OBJECT    248    1153     959       28231       0      62     523776        0
          lkpicurr    168       2    3094           2       0      62     520128        0
              pbuf   2624       0     162           0       0       2     425088        0
        sctp_raddr    736       7     510          23       0     254     380512        0
         MAP ENTRY     96    1320    2586      100239       0     126     374976        0
       malloc-2048   2048     117      51         781       0       8     344064        0
             VNODE    440     679      77        1649       0      30     332640        0
         malloc-16     16   18598     652       19671       0     254     308000        0
     FPU_save_area    832     280      44        1876       0      16     269568        0
zio_buf_comb_262144 262144       0       1          15       0       1     262144        0
      malloc-65536  65536       2       2           8       0       1     262144        0
         malloc-32     32    7246     440        8443       0     254     245952        0
         UMA Zones    768     316       3         318       0      16     244992        0
      malloc-32768  32768       1       6         617       0       1     229376        0
              PROC   1368      72      82        1809       0       8     210672        0
      malloc-65536  65536       0       3         108       0       1     196608        0
       FFS2 dinode    256     640     110        1571       0      62     192000        0
        malloc-256    256     108     642        4213       0      62     192000        0
         tcp_inpcb   1304      10     134         597       0       8     187776        0
        malloc-128    128    1138     257       26135       0     126     178560        0
            lkpimm     56       1    3095           1       0     254     173376        0
             unpcb    320      15     501        1693       0     254     165120        0
         filedesc0   1072      73      81        1949       0       8     165088        0
      malloc-32768  32768       0       5          11       0       1     163840        0
      malloc-32768  32768       1       4          22       0       1     163840        0
      malloc-16384  16384       7       3          21       0       1     163840        0
       S VFS Cache    104    1140     381        2133       0     126     158184        0
       malloc-1024   1024     126      18         269       0      16     147456        0
zio_buf_comb_131072 131072       0       1           1       0       1     131072        0
      malloc-65536  65536       2       0           2       0       1     131072        0
      malloc-65536  65536       0       2         110       0       1     131072        0
      malloc-32768  32768       4       0           4       0       1     131072        0
       malloc-4096   4096      18      14          97       0       2     131072        0
       malloc-2048   2048       9      55         517       0       8     131072        0
       mbuf_packet    256      20     488        2165       0     254     130048        0
       malloc-8192   8192       9       6          27       0       1     122880        0
          ksiginfo    112     148     896         485       0     126     116928        0
        pf anchors   1664       4      66           4       0      64     116480        0
          UMA Kegs    384     302       1         304       0      30     116352        0
         64 Bucket    512     160      64       16560       0      30     114688        0
        malloc-256    256     314     121        1909       0      62     111360        0
             g_bio    408       0     270       20366       0      30     110160        0
        128 Bucket   1024      82      17         372       0      16     101376        0
      malloc-32768  32768       2       1         122       0       1      98304        0
       malloc-2048   2048      45       3          94       0       8      98304        0
          syncache    168       0     528           6       0     254      88704        0
            vnpbuf   2624       0      32           2       0      16      83968        0
       malloc-8192   8192       7       3          81       0       1      81920        0
        malloc-384    384      80     130        1850       0      30      80640        0
        malloc-384    384     169      41         580       0      30      80640        0
        malloc-256    256     161     154        2396       0      62      80640        0
        malloc-256    256     133     182        2641       0      62      80640        0
        sctp_chunk    152       7     513          18       0     254      79040        0
           VMSPACE    584      41      92        1766       0      16      77672        0
       malloc-8192   8192       5       4          22       0       1      73728        0
         malloc-64     64     327     744        5454       0     254      68544        0
         malloc-64     64     512     559        1570       0     254      68544        0
       tcp_bbr_map    128       0     527         552       0     126      67456        0
        malloc-128    128     345     182         570       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-2048   2048      20      12          93       0       8      65536        0
        malloc-256    256      73     182         969       0      62      65280        0
         32 Bucket    256      98     157       22014       0      62      65280        0
             Files     80     174     626       16704       0     126      64000        0
sctp_stream_msg_out    112       0     540           4       0     254      60480        0
         malloc-32     32    1635     255       88391       0     254      60480        0
        malloc-384    384      53      97         983       0      30      57600        0
       malloc-4096   4096       6       8         787       0       2      57344        0
             ripcb    376       5     145         300       0      30      56400        0
         malloc-64     64     318     501       29496       0     254      52416        0
         malloc-64     64     480     339         838       0     254      52416        0
         malloc-32     32    1155     483        1906       0     254      52416        0
        malloc-128    128     107     296        7018       0     126      51584        0
        malloc-128    128     156     247        1055       0     126      51584        0
         udp_inpcb    408      12     114         735       0      30      51408        0
         TURNSTILE    136     305      73         305       0      62      51408        0
        malloc-256    256      55     140        1540       0      62      49920        0
zio_data_buf_16384  16384       0       3           9       0       1      49152        0
           DIRHASH   1024      34      14          44       0      16      49152        0
             NAMEI   1024       1      47       26546       0      16      49152        0
       malloc-2048   2048       1      23         574       0       8      49152        0
       malloc-1024   1024      10      38        2641       0      16      49152        0
            pcpu-8      8    5572     572       11663       0     254      49152        0
              pipe    736      19      47         560       0      16      48576        0
        SLEEPQUEUE     88     305     207         305       0     126      45056        0
               PWD     40      28    1083         635       0     254      44440        0
       malloc-8192   8192       3       2          36       0       1      40960        0
       malloc-4096   4096       7       3          15       0       2      40960        0
       malloc-4096   4096       5       5         603       0       2      40960        0
        sctp_readq    152       0     260           3       0     254      39520        0
            cpuset    200      10     182         281       0      62      38400        0
            da_ccb    544       0      70        5269       0      16      38080        0
     udplite_inpcb    408       1      89          55       0      30      36720        0
         hostcache     64       3     564           3       0     254      36288        0
         malloc-64     64      25     542         325       0     254      36288        0
         malloc-64     64      76     491      909299       0     254      36288        0
         malloc-64     64     150     417        2651       0     254      36288        0
      tcp_rack_map    128       2     277         108       0     126      35712        0
        malloc-128    128      36     243         185       0     126      35712        0
        malloc-128    128      99     180        3580       0     126      35712        0
        malloc-128    128     145     134        2142       0     126      35712        0
      ktls_session    256       0     135           8       0      62      34560        0
     routing nhops    256      21     114         185       0      62      34560        0
           ttyoutq    256      72      63         160       0      62      34560        0
        malloc-256    256       4     131         376       0      62      34560        0
     zio_buf_16384  16384       0       2          10       0       1      32768        0
       malloc-2048   2048       4      12         309       0       8      32768        0
       malloc-2048   2048       4      12           7       0       8      32768        0
       malloc-1024   1024       2      30          74       0      16      32768        0
       malloc-1024   1024      25       7          42       0      16      32768        0
       malloc-1024   1024      10      22         187       0      16      32768        0
       malloc-1024   1024      18      14        3454       0      16      32768        0
       malloc-1024   1024      19      13          34       0      16      32768        0
       malloc-1024   1024       2      30           9       0      16      32768        0
        malloc-512    512      10      54         126       0      30      32768        0
        malloc-512    512      12      52          59       0      30      32768        0
        malloc-512    512       0      64         155       0      30      32768        0
        malloc-512    512       4      60          88       0      30      32768        0
        malloc-512    512       2      62          59       0      30      32768        0
        malloc-512    512       8      56         409       0      30      32768        0
           pcpu-64     64     507       5         507       0     254      32768        0
       tcp_bbr_pcb    896       0      36          16       0      16      32256        0
            ttyinq    160     135      65         300       0      62      32000        0
          8 Bucket     80      94     306         870       0     126      32000        0
   tcp_log_id_node    120       1     263           4       0     126      31680        0
              PGRP    120      19     245         121       0     126      31680        0
            clpbuf   2624       0      12         165       0       4      31488        0
       L VFS Cache    320       0      96          93       0      30      30720        0
        sctp_laddr     48      20     568         368       0     254      28224        0
          rl_entry     48      27     561          50       0     254      28224        0
         malloc-32     32     128     754        1176       0     254      28224        0
         malloc-32     32      82     800        3350       0     254      28224        0
         16 Bucket    144      89     107         678       0      62      28224        0
          4 Bucket     48       7     581          18       0     254      28224        0
               AIO    208       0     133         114       0      62      27664        0
       malloc-8192   8192       1       2          83       0       1      24576        0
       malloc-4096   4096       1       5          40       0       2      24576        0
 tcp_log_id_bucket    176       1     137           4       0      62      24288        0
           rtentry    168      24     120         185       0      62      24192        0
            itimer    352       0      66          59       0      30      23232        0
            splice    184       0     126           7       0      62      23184        0
        malloc-384    384       7      53           7       0      30      23040        0
        malloc-384    384       1      59           2       0      30      23040        0
        malloc-384    384       0      60         343       0      30      23040        0
        malloc-384    384       2      58          69       0      30      23040        0
         domainset     40       0     567         302       0     254      22680        0
       Mountpoints   2816       2       6          11       0       4      22528        0
              ertt     72       9     271         597       0     126      20160        0
         malloc-32     32     260     370         475       0     254      20160        0
         malloc-32     32     131     499         855       0     254      20160        0
         malloc-32     32      36     594        2718       0     254      20160        0
          2 Bucket     32     159     471        1381       0     254      20160        0
             KNOTE    160       0     125         405       0      62      20000        0
           cryptop    280       0      70          17       0      30      19600        0
             AIOCB    552       0      35         126       0      16      19320        0
            AIOLIO    272       0      70          22       0      30      19040        0
              vmem   1856       2       7           2       0       8      16704        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-16384  16384       1       0           1       0       1      16384        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-8192   8192       0       2          31       0       1      16384        0
       malloc-4096   4096       3       1           7       0       2      16384        0
       malloc-2048   2048       2       6         220       0       8      16384        0
        malloc-512    512       0      32           1       0      30      16384        0
        malloc-512    512       1      31          38       0      30      16384        0
           SMR CPU     32       8     503           8       0     254      16352        0
         malloc-16     16     382     618        3583       0     254      16000        0
              kenv    258      17      43        1082       0      30      15480        0
      tcp_rack_pcb   1088       1      13          10       0       8      15232        0
            mqnode    416       3      33           3       0      30      14976        0
        SMR SHARED     24       8     503           8       0     254      12264        0
arc_buf_hdr_t_full    368       4      29           4       0      30      12144        0
         malloc-16     16      50     700         151       0     254      12000        0
         malloc-16     16      62     688         946       0     254      12000        0
         malloc-16     16      75     675        1440       0     254      12000        0
         malloc-16     16     186     564        3026       0     254      12000        0
         malloc-16     16      19     731       70267       0     254      12000        0
         malloc-16     16      15     735       24830       0     254      12000        0
            swrbuf   2624       0       4           4       0       4      10496        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-8192   8192       1       0           1       0       1       8192        0
           pcpu-16     16       8     504           8       0     254       8192        0
      vtnet_tx_hdr     24       0     334        4353       0     254       8016        0
       UMA Slabs 1    176      11      11          11       0      62       3872        0
        KMAP ENTRY     96      21      18          68       0       0       3744        0
               tfo      4       0     493           1       0     254       1972        0
               md4      8       0       0           0       0     254          0        0
   zfs_znode_cache    456       0       0           0       0      30          0        0
zap_attr_long_cache   1056       0       0           0       0       8          0        0
     zap_name_long   1096       0       0           0       0       8          0        0
    zap_attr_cache    288       0       0           0       0      30          0        0
          zap_name    328       0       0           0       0      30          0        0
       sio_cache_2    168       0       0           0       0      62          0        0
       sio_cache_1    152       0       0           0       0      62          0        0
       sio_cache_0    136       0       0           0       0      62          0        0
     zil_zcw_cache     80       0       0           0       0     126          0        0
     zil_lwb_cache    376       0       0           0       0      30          0        0
dbuf_dirty_record_t    376       0       0           0       0      30          0        0
    dmu_buf_impl_t    376       0       0           0       0      30          0        0
         arc_buf_t     32       0       0           0       0     254          0        0
arc_buf_hdr_t_l2only     96       0       0           0       0     126          0        0
           dnode_t    968       0       0           0       0      16          0        0
          sa_cache    272       0       0           0       0      30          0        0
         abd_chunk   4096       0       0           0       0       2          0        0
zio_buf_comb_16777216 16777216       0       0           0       0       1          0        0
zio_buf_comb_12582912 12582912       0       0           0       0       1          0        0
zio_buf_comb_8388608 8388608       0       0           0       0       1          0        0
zio_buf_comb_6291456 6291456       0       0           0       0       1          0        0
zio_buf_comb_4194304 4194304       0       0           0       0       1          0        0
zio_buf_comb_3145728 3145728       0       0           0       0       1          0        0
zio_buf_comb_2097152 2097152       0       0           0       0       1          0        0
zio_buf_comb_1572864 1572864       0       0           0       0       1          0        0
zio_buf_comb_1048576 1048576       0       0           0       0       1          0        0
zio_buf_comb_786432 786432       0       0           0       0       1          0        0
zio_buf_comb_524288 524288       0       0           0       0       1          0        0
zio_buf_comb_393216 393216       0       0           0       0       1          0        0
zio_buf_comb_196608 196608       0       0           0       0       1          0        0
zio_buf_comb_98304  98304       0       0           0       0       1          0        0
zio_buf_comb_65536  65536       0       0           0       0       1          0        0
zio_buf_comb_49152  49152       0       0           0       0       1          0        0
zio_buf_comb_32768  32768       0       0           0       0       1          0        0
zio_buf_comb_24576  24576       0       0           0       0       1          0        0
zio_data_buf_12288  12288       0       0           0       0       1          0        0
     zio_buf_12288  12288       0       0           0       0       1          0        0
 zio_data_buf_8192   8192       0       0           0       0       1          0        0
      zio_buf_8192   8192       0       0           0       0       1          0        0
 zio_data_buf_6144   6144       0       0           0       0       1          0        0
      zio_buf_6144   6144       0       0           0       0       1          0        0
 zio_data_buf_4096   4096       0       0           0       0       2          0        0
      zio_buf_4096   4096       0       0           0       0       2          0        0
 zio_data_buf_3072   3072       0       0           0       0       4          0        0
      zio_buf_3072   3072       0       0           0       0       4          0        0
 zio_data_buf_2048   2048       0       0           0       0       8          0        0
      zio_buf_2048   2048       0       0           0       0       8          0        0
 zio_data_buf_1536   1536       0       0           0       0       8          0        0
      zio_buf_1536   1536       0       0           0       0       8          0        0
 zio_data_buf_1024   1024       0       0           0       0      16          0        0
      zio_buf_1024   1024       0       0           0       0      16          0        0
  zio_data_buf_512    512       0       0           0       0      30          0        0
       zio_buf_512    512       0       0           0       0      30          0        0
    zio_link_cache     48       0       0           0       0     254          0        0
         zio_cache   1216       0       0           0       0       8          0        0
ddt_log_entry_trad_cache    328       0       0           0       0      30          0        0
ddt_log_entry_flat_cache    144       0       0           0       0      62          0        0
ddt_entry_trad_cache    368       0       0           0       0      30          0        0
ddt_entry_flat_cache    184       0       0           0       0      62          0        0
         ddt_cache  29240       0       0           0       0       1          0        0
   brt_entry_cache    168       0       0           0       0      62          0        0
metaslab_alloc_trace_cache     72       0       0           0       0     126          0        0
zfs_btree_leaf_cache   4096       0       0           0       0       2          0        0
   reference_cache     48       0       0           0       0     254          0        0
        taskq_zone    160       0       0           0       0      62          0        0
             md127      8       0       0           0       0     254          0        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    152       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 fragment node     72       0       0           0       0     126          0        0
          pf frags    232       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 Ethernet anchors   1240       0       0           0       0      64          0        0
   pf UDP mappings    104       0       0           0       0     126          0        0
   pf source nodes    152       0       0           0       0     254          0        0
     pf state keys     88       0       0           0       0     126          0        0
         pf states    384       0       0           0       0     254          0        0
           pf tags    104       0       0           0       0     126          0        0
          pf mtags    184       0       0           0       0      62          0        0
tfo_ccache_entries     80       0       0           0       0     126          0        0
          sackhole     32       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
          tcpreass     48       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    240       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
     STS VFS Cache    144       0       0           0       0      62          0        0
  linux_dma_object     32       0       0           0       0     254          0        0
  linux_dma_pctrie    152       0       0           0       0      62          0        0
   IOMMU_MAP_ENTRY    112       0       0           0       0     126          0        0
            skbuff   1808       0       0           0       0       8          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
           nfspbuf   2624       0       0           0       0       4          0        0
            swwbuf   2624       0       0           0       0       2          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    152       0       0           0       0      62          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-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
           pcpu-32     32       0       0           0       0     254          0        0
            pcpu-4      4       0       0           0       0     254          0        0
            fakepg     88       0       0           0       0     126          0        0
          UMA Hash    256       0       0           0       0      62          0        0
db> show all tcpcbs/bl

Crashes (8):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/20 10:39 freebsd-src c04fe26aa2f7 79512909 console log report ci-freebsd-main Fatal trap NUM: page fault in mld_change_state
2025/05/30 19:12 freebsd-src 955ab1a8f21e 3d2f584d console log report ci-freebsd-main Fatal trap NUM: page fault in mld_change_state
2025/03/24 14:23 freebsd-src 67c1c4dfd1cc 875573af console log report ci-freebsd-main Fatal trap NUM: page fault in mld_change_state
2025/08/16 22:59 freebsd-src fa085cc78673 1804e95e console log report ci-freebsd-i386 Fatal trap NUM: page fault in mld_change_state
2025/06/17 09:06 freebsd-src 990a088612c3 cfebc887 console log report ci-freebsd-i386 Fatal trap NUM: page fault in mld_change_state
2025/04/15 15:25 freebsd-src 168d873ae41f 85125322 console log report ci-freebsd-i386 Fatal trap NUM: page fault in mld_change_state
2025/03/07 02:03 freebsd-src ecb3a7d43dd6 831e3629 console log report ci-freebsd-i386 Fatal trap NUM: page fault in mld_change_state
2025/03/01 23:45 freebsd-src 7ee310c80ea7 c3901742 console log report ci-freebsd-i386 Fatal trap NUM: page fault in mld_change_state
* Struck through repros no longer work on HEAD.