Date: Fri, 30 Mar 2012 18:34:55 -0400 From: Richard Yao <ryao@cs.stonybrook.edu> To: Konstantin Belousov <kostikbel@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: Text relocations in kernel modules Message-ID: <4F76350F.8000708@cs.stonybrook.edu> In-Reply-To: <20120330203605.GI2358@deviant.kiev.zoral.com.ua> References: <4F75E404.8000104@cs.stonybrook.edu> <4F75EF86.6090909@cs.stonybrook.edu> <20120330190713.GG2358@deviant.kiev.zoral.com.ua> <4F760C9E.6060405@cs.stonybrook.edu> <20120330194649.GH2358@deviant.kiev.zoral.com.ua> <4F761371.7020606@cs.stonybrook.edu> <20120330203605.GI2358@deviant.kiev.zoral.com.ua>
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On 03/30/12 16:36, Konstantin Belousov wrote:
> First, there _are_ relocations against text in the amd64 modules, but I=
> suspect that your scripts do not detect this. Most likely, scripts look=
> for DT_TEXTREL dynamic tag, and tags are only present in the executable=
s
> or shared objects, not in the object files. The amd64 modules are objec=
t
> files, so you just mis-interpret the situation.
readelf is a part of binutils. It is not a script. Here is the version
that Gentoo/FreeBSD uses:
# readelf --version
GNU readelf (GNU Binutils) 2.20.1.20100303
Copyright 2009 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of=
the GNU General Public License version 3 or (at your option) any later
version.
This program has absolutely no warranty.
In addition, this is what it says when I ask it to look at virtio_blk.ko:=
# readelf -d /boot/modules/virtio_blk.ko
Dynamic section at offset 0x2f6c contains 13 entries:
Tag Type Name/Value
0x00000004 (HASH) 0xd4
0x6ffffef5 (GNU_HASH) 0x480
0x00000005 (STRTAB) 0x9d0
0x00000006 (SYMTAB) 0x4e0
0x0000000a (STRSZ) 1295 (bytes)
0x0000000b (SYMENT) 16 (bytes)
0x00000011 (REL) 0xee0
0x00000012 (RELSZ) 1664 (bytes)
0x00000013 (RELENT) 8 (bytes)
0x00000016 (TEXTREL) 0x0
0x0000001e (FLAGS) TEXTREL
0x6ffffffa (RELCOUNT) 87
0x00000000 (NULL) 0x0
Running the same command on amd64 FreeBSD's version returns nothing. I
have attached the result of `readelf -a ...` on both the i386 version
and the amd64 version.
> Second, from what you wrote, I see the issue in either wrong policy
> being established in your project, or (another) mis-interpretation of
> the policy. Indeed, having text relocations in the shared objects is
> bad, because said relocations hinder text pages sharing. Relocated page=
> is modified, so COW mechanism causes it to become private to process.
I believe that relocations also cause the linker to work harder when the
modules themselves are loaded the first time. They can also cause bugs
when code is ported to another architecture.
> On the other hand, there is only one instance of the loaded kernel modu=
le,
> its text segment (or section, for amd64) is not shared, so modification=
s
> to the text pages do not cause increased memory use. More, not compilin=
g
> modules with -fPIC (absence of -fPIC is what makes the text relocations=
to
> appear in the final link result) makes the code faster, esp. on i386.
Compiling with -fPIC breaks the build.
> So, there is nothing to report, and fix is outside the FreeBSD domain:
> either fix your policy by not stating that text relocation in kernel
> module is banned, or just find that policy only applicable to usermode
> objects.
Linux has no such text relocations in its modules. I have checked on
both i386 and amd64. I have difficulty believing that FreeBSD needs text
relocations when Linux does not.
I am fairly certain that this is going to interfere with ASLR in the
kernel, which is a security issue. It is definitely something to report.
--------------080004000109050607090903
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ELF Header:
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Class: ELF32
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - FreeBSD
ABI Version: 0
Type: DYN (Shared object file)
Machine: Intel 80386
Version: 0x1
Entry point address: 0x1560
Start of program headers: 52 (bytes into file)
Start of section headers: 12976 (bytes into file)
Flags: 0x0
Size of this header: 52 (bytes)
Size of program headers: 32 (bytes)
Number of program headers: 5
Size of section headers: 40 (bytes)
Number of section headers: 20
Section header string table index: 17
Section Headers:
[Nr] Name Type Addr Off Size ES Flg Lk=
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[ 4] .dynstr STRTAB 000009d0 0009d0 00050f 00 A 0=
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[ 5] .rel.dyn REL 00000ee0 000ee0 000680 08 A 3=
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[ 7] .rodata PROGBITS 00002878 002878 0002d6 01 AMS 0=
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[ 9] set_sysinit_set PROGBITS 00002b60 002b60 000008 00 A 0=
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[11] .dynamic DYNAMIC 00003f6c 002f6c 000088 08 WA 4=
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[12] .got.plt PROGBITS 00003ff4 002ff4 00000c 04 WA 0=
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[15] .comment PROGBITS 00000000 003178 00006c 01 MS 0=
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[18] .symtab SYMTAB 00000000 0035d0 0008c0 10 19=
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[19] .strtab STRTAB 00000000 003e90 000999 00 0=
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Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings)
I (info), L (link order), G (group), x (unknown)
O (extra OS processing required) o (OS specific), p (processor specific=
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There are no section groups in this file.
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align=
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PAX_FLAGS 0x000000 0x00000000 0x00000000 0x00000 0x00000 0x4
Section to Segment mapping:
Segment Sections...
00 .hash .gnu.hash .dynsym .dynstr .rel.dyn .text .rodata set_modm=
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01 .dynamic .got.plt .data .bss=20
02 .dynamic=20
03 .dynamic .got.plt=20
04 =20
Dynamic section at offset 0x2f6c contains 13 entries:
Tag Type Name/Value
0x00000004 (HASH) 0xd4
0x6ffffef5 (GNU_HASH) 0x480
0x00000005 (STRTAB) 0x9d0
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0x00000011 (REL) 0xee0
0x00000012 (RELSZ) 1664 (bytes)
0x00000013 (RELENT) 8 (bytes)
0x00000016 (TEXTREL) 0x0
0x0000001e (FLAGS) TEXTREL
0x6ffffffa (RELCOUNT) 87
0x00000000 (NULL) 0x0
Relocation section '.rel.dyn' at offset 0xee0 contains 208 entries:
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Symbol table '.dynsym' contains 79 entries:
Num: Value Size Type Bind Vis Ndx Name
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1: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_reinit
2: 00000000 0 NOTYPE GLOBAL DEFAULT UND device_get_softc
3: 00000000 0 NOTYPE GLOBAL DEFAULT UND device_shutdown_desc
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13: 00000000 0 NOTYPE GLOBAL DEFAULT UND taskqueue_thread_enque=
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33: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_get_device_type=
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42: 00000000 0 NOTYPE GLOBAL DEFAULT UND taskqueue_free
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45: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_set_feature_des=
c
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48: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_negotiate_featu=
res
49: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_setup_intr
50: 00000000 0 NOTYPE GLOBAL DEFAULT UND disk_create
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53: 00000000 0 NOTYPE GLOBAL DEFAULT UND disk_alloc
54: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_disable_intr=
55: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_stop
56: 00000000 0 NOTYPE GLOBAL DEFAULT UND taskqueue_start_thread=
s
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60: 00000000 0 NOTYPE GLOBAL DEFAULT UND bootverbose
61: 00000000 0 NOTYPE GLOBAL DEFAULT UND disk_destroy
62: 00000000 0 NOTYPE GLOBAL DEFAULT UND device_detach_desc
63: 00000000 0 NOTYPE GLOBAL DEFAULT UND uma_zcreate
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67: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_alloc_virtqueue=
s
68: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_with_feature
69: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_empty
70: 00000000 0 NOTYPE GLOBAL DEFAULT UND uma_zfree_arg
71: 00000000 0 NOTYPE GLOBAL DEFAULT UND bioq_first
72: 00002b50 0 NOTYPE GLOBAL DEFAULT ABS __start_set_modmetadat=
a_s
73: 00004178 0 NOTYPE GLOBAL DEFAULT ABS __bss_start
74: 00004178 0 NOTYPE GLOBAL DEFAULT ABS _edata
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Symbol table '.symtab' contains 140 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 00000000 0 NOTYPE LOCAL DEFAULT UND=20
1: 00001560 3 FUNC LOCAL DEFAULT 6 vtblk_shutdown
2: 00001580 33 FUNC LOCAL DEFAULT 6 vtblk_open
3: 000015c0 17 FUNC LOCAL DEFAULT 6 vtblk_close
4: 000015e0 20 FUNC LOCAL DEFAULT 6 vtblk_ioctl
5: 00001600 98 FUNC LOCAL DEFAULT 6 vtblk_resume
6: 00001680 98 FUNC LOCAL DEFAULT 6 vtblk_suspend
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12: 00001a00 165 FUNC LOCAL DEFAULT 6 vtblk_execute_request
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14: 00001b60 462 FUNC LOCAL DEFAULT 6 vtblk_dump
15: 00001d40 394 FUNC LOCAL DEFAULT 6 vtblk_startio
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18: 00002580 241 FUNC LOCAL DEFAULT 6 vtblk_strategy
19: 00002680 304 FUNC LOCAL DEFAULT 6 vtblk_intr_task
20: 00004178 4 OBJECT LOCAL DEFAULT 14 vtblk_no_ident
21: 00002540 54 FUNC LOCAL DEFAULT 6 vtblk_probe
22: 000027c0 184 FUNC LOCAL DEFAULT 6 vtblk_modevent
23: 00002b50 4 OBJECT LOCAL DEFAULT 8 __set_modmetadata_set_=
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24: 00004078 16 OBJECT LOCAL DEFAULT 13 _mod_metadata_md_virti=
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25: 00002b54 4 OBJECT LOCAL DEFAULT 8 __set_modmetadata_set_=
sym
26: 00004088 16 OBJECT LOCAL DEFAULT 13 _mod_metadata_virtio_b=
lk_
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vir
28: 00004098 16 OBJECT LOCAL DEFAULT 13 virtio_blk_virtio_pcim=
odu
29: 00002b58 4 OBJECT LOCAL DEFAULT 8 __set_modmetadata_set_=
sym
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31: 00002b5c 4 OBJECT LOCAL DEFAULT 8 __set_modmetadata_set_=
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32: 000040b8 16 OBJECT LOCAL DEFAULT 13 _mod_metadata_md_virti=
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33: 00002b64 4 OBJECT LOCAL DEFAULT 9 __set_sysinit_set_sym_=
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34: 000040c8 16 OBJECT LOCAL DEFAULT 13 __Tunable_init_168_sys=
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35: 000040d8 12 OBJECT LOCAL DEFAULT 13 _virtio_blk_depend_on_=
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36: 000040e4 4 OBJECT LOCAL DEFAULT 13 _virtio_blk_version
37: 000040e8 12 OBJECT LOCAL DEFAULT 13 virtio_blk_virtio_pci_=
mod
38: 000040f4 12 OBJECT LOCAL DEFAULT 13 _virtio_blk_virtio_pci=
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39: 00004100 8 OBJECT LOCAL DEFAULT 13 __tunable_int_168
40: 00004108 24 OBJECT LOCAL DEFAULT 13 virtio_blk_virtio_pci_=
dri
41: 00004120 24 OBJECT LOCAL DEFAULT 13 vtblk_driver
42: 00004180 4 OBJECT LOCAL DEFAULT 14 vtblk_devclass
43: 00004140 56 OBJECT LOCAL DEFAULT 13 vtblk_methods
44: 00003f6c 0 OBJECT LOCAL HIDDEN ABS _DYNAMIC
45: 00003ff4 0 OBJECT LOCAL HIDDEN ABS _GLOBAL_OFFSET_TABLE_
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47: 00000480 0 SECTION LOCAL DEFAULT 2=20
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49: 000009d0 0 SECTION LOCAL DEFAULT 4=20
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51: 00001560 0 SECTION LOCAL DEFAULT 6=20
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56: 00003f6c 0 SECTION LOCAL DEFAULT 11=20
57: 00003ff4 0 SECTION LOCAL DEFAULT 12=20
58: 00004000 0 SECTION LOCAL DEFAULT 13=20
59: 00004178 0 SECTION LOCAL DEFAULT 14=20
60: 00000000 0 SECTION LOCAL DEFAULT 15=20
61: 00000000 0 SECTION LOCAL DEFAULT 16=20
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63: 00000000 0 NOTYPE GLOBAL DEFAULT UND device_get_softc
64: 00000000 0 NOTYPE GLOBAL DEFAULT UND device_shutdown_desc
65: 00000000 0 NOTYPE GLOBAL DEFAULT UND device_set_desc
66: 00000000 0 NOTYPE GLOBAL DEFAULT UND taskqueue_drain
67: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_poll
68: 00000000 0 NOTYPE GLOBAL DEFAULT UND uma_zdestroy
69: 00000000 0 NOTYPE GLOBAL DEFAULT UND device_suspend_desc
70: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_full
71: 00000000 0 NOTYPE GLOBAL DEFAULT UND snprintf
72: 00002b50 0 NOTYPE GLOBAL DEFAULT ABS __start_set_modmetadat=
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73: 00000000 0 NOTYPE GLOBAL DEFAULT UND __stack_chk_guard
74: 00000000 0 NOTYPE GLOBAL DEFAULT UND biodone
75: 00000000 0 NOTYPE GLOBAL DEFAULT UND taskqueue_thread_enque=
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76: 00000000 0 NOTYPE GLOBAL DEFAULT UND __stop_set_pcpu
77: 00000000 0 NOTYPE GLOBAL DEFAULT UND device_attach_desc
78: 00000000 0 NOTYPE GLOBAL DEFAULT UND bioq_disksort
79: 00000000 0 NOTYPE GLOBAL DEFAULT UND mtx_destroy
80: 00000000 0 NOTYPE GLOBAL DEFAULT UND sglist_append
81: 00000000 0 NOTYPE GLOBAL DEFAULT UND uma_zalloc_arg
82: 00000000 0 NOTYPE GLOBAL DEFAULT UND device_printf
83: 00000000 0 NOTYPE GLOBAL DEFAULT UND _mtx_lock_flags
84: 00000000 0 NOTYPE GLOBAL DEFAULT UND device_get_nameunit
85: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_reinit_complete=
86: 00000000 0 NOTYPE GLOBAL DEFAULT UND mtx_init
87: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_read_device_con=
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88: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_size
89: 00000000 0 NOTYPE GLOBAL DEFAULT UND module_register_init
90: 00000000 0 NOTYPE GLOBAL DEFAULT UND bioq_init
91: 00000000 0 NOTYPE GLOBAL DEFAULT UND bzero
92: 00000000 0 NOTYPE GLOBAL DEFAULT UND __udivdi3
93: 00000000 0 NOTYPE GLOBAL DEFAULT UND taskqueue_enqueue_fast=
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95: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_get_device_type=
96: 00002b68 0 NOTYPE GLOBAL DEFAULT ABS __stop_set_sysinit_set=
97: 00000000 0 NOTYPE GLOBAL DEFAULT UND sglist_free
98: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_drain
99: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_enable_intr
100: 00000000 0 NOTYPE GLOBAL DEFAULT UND driver_module_handler
101: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_notify
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104: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_dequeue
105: 00002b60 0 NOTYPE GLOBAL DEFAULT ABS __start_set_sysinit_se=
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106: 00000000 0 NOTYPE GLOBAL DEFAULT UND taskqueue_free
107: 00000000 0 NOTYPE GLOBAL DEFAULT UND panic
108: 00000000 0 NOTYPE GLOBAL DEFAULT UND tunable_int_init
109: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_set_feature_des=
c
110: 00000000 0 NOTYPE GLOBAL DEFAULT UND uma_zone_get_cur
111: 00000000 0 NOTYPE GLOBAL DEFAULT UND device_resume_desc
112: 00004178 0 NOTYPE GLOBAL DEFAULT ABS __bss_start
113: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_negotiate_featu=
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114: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_setup_intr
115: 00000000 0 NOTYPE GLOBAL DEFAULT UND disk_create
116: 00000000 0 NOTYPE GLOBAL DEFAULT UND device_is_attached
117: 00000000 0 NOTYPE GLOBAL DEFAULT UND biofinish
118: 00000000 0 NOTYPE GLOBAL DEFAULT UND disk_alloc
119: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_disable_intr=
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123: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_enqueue
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125: 00000000 0 NOTYPE GLOBAL DEFAULT UND bootverbose
126: 00004178 0 NOTYPE GLOBAL DEFAULT ABS _edata
127: 00004184 0 NOTYPE GLOBAL DEFAULT ABS _end
128: 00000000 0 NOTYPE GLOBAL DEFAULT UND disk_destroy
129: 00000000 0 NOTYPE GLOBAL DEFAULT UND device_detach_desc
130: 00000000 0 NOTYPE GLOBAL DEFAULT UND uma_zcreate
131: 00000000 0 NOTYPE GLOBAL DEFAULT UND bioq_takefirst
132: 00000000 0 NOTYPE GLOBAL DEFAULT UND __start_set_pcpu
133: 00000000 0 NOTYPE GLOBAL DEFAULT UND device_probe_desc
134: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_alloc_virtqueue=
s
135: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtio_with_feature
136: 00002b60 0 NOTYPE GLOBAL DEFAULT ABS __stop_set_modmetadata=
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137: 00000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_empty
138: 00000000 0 NOTYPE GLOBAL DEFAULT UND uma_zfree_arg
139: 00000000 0 NOTYPE GLOBAL DEFAULT UND bioq_first
Histogram for bucket list length (total of 154 buckets):
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0 91 ( 59.1%)
1 48 ( 31.2%) 61.5%
2 15 ( 9.7%) 100.0%
Histogram for `.gnu.hash' bucket list length (total of 11 buckets):
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0 5 ( 45.5%)
1 5 ( 45.5%) 71.4%
2 1 ( 9.1%) 100.0%
No version information found in this file.
--------------080004000109050607090903
Content-Type: text/plain;
name="readelf-upstream-freebsd-amd64"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment;
filename="readelf-upstream-freebsd-amd64"
ELF Header:
Magic: 7f 45 4c 46 02 01 01 09 00 00 00 00 00 00 00 00=20
Class: ELF64
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - FreeBSD
ABI Version: 0
Type: REL (Relocatable file)
Machine: Advanced Micro Devices X86-64
Version: 0x1
Entry point address: 0x0
Start of program headers: 0 (bytes into file)
Start of section headers: 6504 (bytes into file)
Flags: 0x0
Size of this header: 64 (bytes)
Size of program headers: 0 (bytes)
Number of program headers: 0
Size of section headers: 64 (bytes)
Number of section headers: 18
Section header string table index: 15
Section Headers:
[Nr] Name Type Address Offset
Size EntSize Flags Link Info Align
[ 0] NULL 0000000000000000 00000000
0000000000000000 0000000000000000 0 0 0
[ 1] .text PROGBITS 0000000000000000 00000040
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[ 2] .rela.text RELA 0000000000000000 000033e8
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[ 3] .rodata.str1.8 PROGBITS 0000000000000000 00001250
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[ 4] .rodata.str1.1 PROGBITS 0000000000000000 00001395
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[ 7] set_sysinit_set PROGBITS 0000000000000000 00001558
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[ 8] .relaset_sysinit_ RELA 0000000000000000 00004270
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[ 9] .data PROGBITS 0000000000000000 00001580
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[14] .gnu_debuglink PROGBITS 0000000000000000 0000189f
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Key to Flags:
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I (info), L (link order), G (group), x (unknown)
O (extra OS processing required) o (OS specific), p (processor specific=
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There are no section groups in this file.
There are no program headers in this file.
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0000000010bd 007100000002 R_X86_64_PC32 0000000000000000 virtqueue_d=
isable_intr - 4
0000000010ce 00020000000b R_X86_64_32S 0000000000000000 .rodata.str=
1.8 + 0
0000000010d3 006200000002 R_X86_64_PC32 0000000000000000 _mtx_unlock=
_flags - 4
00000000110d 005a00000002 R_X86_64_PC32 0000000000000000 virtio_get_=
device_type - 4
00000000112a 00030000000b R_X86_64_32S 0000000000000000 .rodata.str=
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00000000112f 003d00000002 R_X86_64_PC32 0000000000000000 device_set_=
desc - 4
000000001183 000500000002 R_X86_64_PC32 0000000000000000 .bss + 4
000000001188 006900000002 R_X86_64_PC32 0000000000000000 uma_zone_ge=
t_cur - 4
0000000011d5 00030000000b R_X86_64_32S 0000000000000000 .rodata.str=
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0000000011da 007a00000002 R_X86_64_PC32 0000000000000000 uma_zcreate=
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0000000011f3 000500000002 R_X86_64_PC32 0000000000000000 .bss + 4
0000000011f8 004000000002 R_X86_64_PC32 0000000000000000 uma_zdestro=
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000000001201 000500000002 R_X86_64_PC32 0000000000000000 .bss + 0
0000000001ef 007200000002 R_X86_64_PC32 0000000000000000 virtio_stop=
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00000000027a 006f00000002 R_X86_64_PC32 0000000000000000 biofinish -=
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000000000548 007500000002 R_X86_64_PC32 0000000000000000 virtqueue_e=
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00000000104e 006200000002 R_X86_64_PC32 0000000000000000 _mtx_unlock=
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0000000010f0 005800000002 R_X86_64_PC32 0000000000000000 taskqueue_e=
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Relocation section '.relaset_modmetadata_set' at offset 0x4210 contains 4=
entries:
Offset Info Type Sym. Value Sym. Name +=
Addend
000000000000 000400000001 R_X86_64_64 0000000000000000 .data + a0
000000000008 000400000001 R_X86_64_64 0000000000000000 .data + c0
000000000010 000400000001 R_X86_64_64 0000000000000000 .data + 100=
000000000018 000400000001 R_X86_64_64 0000000000000000 .data + 120=
Relocation section '.relaset_sysinit_set' at offset 0x4270 contains 2 ent=
ries:
Offset Info Type Sym. Value Sym. Name +=
Addend
000000000000 000400000001 R_X86_64_64 0000000000000000 .data + e0
000000000008 000400000001 R_X86_64_64 0000000000000000 .data + 140=
Relocation section '.rela.data' at offset 0x42a0 contains 44 entries:
Offset Info Type Sym. Value Sym. Name +=
Addend
000000000008 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
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000000000018 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
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000000000028 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
1.1 + f2
000000000038 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
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000000000048 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
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000000000058 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
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000000000068 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
1.1 + 11d
000000000078 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
1.1 + 126
000000000088 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
1.1 + 12f
0000000000a8 000400000001 R_X86_64_64 0000000000000000 .data + 158=
0000000000b0 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
1.1 + 138
0000000000c8 000400000001 R_X86_64_64 0000000000000000 .data + 164=
0000000000d0 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
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0000000000e8 005500000001 R_X86_64_64 0000000000000000 module_regi=
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0000000000f0 000400000001 R_X86_64_64 0000000000000000 .data + 170=
000000000108 000400000001 R_X86_64_64 0000000000000000 .data + 170=
000000000110 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
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000000000128 000400000001 R_X86_64_64 0000000000000000 .data + 188=
000000000130 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
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000000000148 006700000001 R_X86_64_64 0000000000000000 tunable_int=
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000000000150 000400000001 R_X86_64_64 0000000000000000 .data + 1a0=
000000000170 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
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000000000178 005f00000001 R_X86_64_64 0000000000000000 driver_modu=
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000000000180 000400000001 R_X86_64_64 0000000000000000 .data + 1c0=
0000000001a0 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
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0000000001a8 000500000001 R_X86_64_64 0000000000000000 .bss + 0
0000000001c0 000100000001 R_X86_64_64 0000000000000000 .text + 115=
0
0000000001d0 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
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0000000001d8 000400000001 R_X86_64_64 0000000000000000 .data + 200=
0000000001e0 000500000001 R_X86_64_64 0000000000000000 .bss + 10
000000000200 000300000001 R_X86_64_64 0000000000000000 .rodata.str=
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000000000208 000400000001 R_X86_64_64 0000000000000000 .data + 240=
000000000240 007d00000001 R_X86_64_64 0000000000000000 device_prob=
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000000000248 000100000001 R_X86_64_64 0000000000000000 .text + 110=
0
000000000250 004900000001 R_X86_64_64 0000000000000000 device_atta=
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000000000258 000100000001 R_X86_64_64 0000000000000000 .text + a50=
000000000260 007900000001 R_X86_64_64 0000000000000000 device_deta=
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000000000268 000100000001 R_X86_64_64 0000000000000000 .text + 2f0=
000000000270 004100000001 R_X86_64_64 0000000000000000 device_susp=
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000000000278 000100000001 R_X86_64_64 0000000000000000 .text + 170=
000000000280 006a00000001 R_X86_64_64 0000000000000000 device_resu=
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000000000288 000100000001 R_X86_64_64 0000000000000000 .text + 110=
000000000290 003c00000001 R_X86_64_64 0000000000000000 device_shut=
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000000000298 000100000001 R_X86_64_64 0000000000000000 .text + 0
There are no unwind sections in this file.
Symbol table '.symtab' contains 132 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND=20
1: 0000000000000000 0 SECTION LOCAL DEFAULT 1=20
2: 0000000000000000 0 SECTION LOCAL DEFAULT 3=20
3: 0000000000000000 0 SECTION LOCAL DEFAULT 4=20
4: 0000000000000000 0 SECTION LOCAL DEFAULT 9=20
5: 0000000000000000 0 SECTION LOCAL DEFAULT 11=20
6: 0000000000000000 8 FUNC LOCAL DEFAULT 1 vtblk_shutdown=
7: 0000000000000010 39 FUNC LOCAL DEFAULT 1 vtblk_open
8: 0000000000000040 19 FUNC LOCAL DEFAULT 1 vtblk_close
9: 0000000000000060 22 FUNC LOCAL DEFAULT 1 vtblk_ioctl
10: 0000000000000080 62 FUNC LOCAL DEFAULT 1 vtblk_dequeue_=
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11: 00000000000000c0 65 FUNC LOCAL DEFAULT 1 vtblk_dequeue_=
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12: 0000000000000110 90 FUNC LOCAL DEFAULT 1 vtblk_resume
13: 0000000000000170 90 FUNC LOCAL DEFAULT 1 vtblk_suspend
14: 00000000000001d0 35 FUNC LOCAL DEFAULT 1 vtblk_stop
15: 0000000000000200 99 FUNC LOCAL DEFAULT 1 vtblk_enqueue_=
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16: 0000000000000270 14 FUNC LOCAL DEFAULT 1 vtblk_bio_erro=
r
17: 0000000000000280 106 FUNC LOCAL DEFAULT 1 vtblk_drain_vq=
18: 00000000000002f0 391 FUNC LOCAL DEFAULT 1 vtblk_detach
19: 0000000000000008 8 OBJECT LOCAL DEFAULT 11 vtblk_req_zone=
20: 0000000000000480 52 FUNC LOCAL DEFAULT 1 vtblk_vq_intr
21: 00000000000004c0 176 FUNC LOCAL DEFAULT 1 vtblk_execute_=
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22: 0000000000000570 175 FUNC LOCAL DEFAULT 1 vtblk_poll_req=
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23: 0000000000000620 468 FUNC LOCAL DEFAULT 1 vtblk_dump
24: 0000000000000800 389 FUNC LOCAL DEFAULT 1 vtblk_startio
25: 0000000000000990 192 FUNC LOCAL DEFAULT 1 vtblk_strategy=
26: 0000000000000a50 1448 FUNC LOCAL DEFAULT 1 vtblk_attach
27: 0000000000000000 160 OBJECT LOCAL DEFAULT 9 vtblk_feature_=
desc
28: 0000000000001000 244 FUNC LOCAL DEFAULT 1 vtblk_intr_tas=
k
29: 0000000000000000 4 OBJECT LOCAL DEFAULT 11 vtblk_no_ident=
30: 0000000000001100 65 FUNC LOCAL DEFAULT 1 vtblk_probe
31: 0000000000001150 190 FUNC LOCAL DEFAULT 1 vtblk_modevent=
32: 0000000000000000 8 OBJECT LOCAL DEFAULT 5 __set_modmetad=
ata_set_sym
33: 00000000000000a0 24 OBJECT LOCAL DEFAULT 9 _mod_metadata_=
md_virtio_b
34: 0000000000000008 8 OBJECT LOCAL DEFAULT 5 __set_modmetad=
ata_set_sym
35: 00000000000000c0 24 OBJECT LOCAL DEFAULT 9 _mod_metadata_=
virtio_blk_
36: 0000000000000000 8 OBJECT LOCAL DEFAULT 7 __set_sysinit_=
set_sym_vir
37: 00000000000000e0 24 OBJECT LOCAL DEFAULT 9 virtio_blk_vir=
tio_pcimodu
38: 0000000000000010 8 OBJECT LOCAL DEFAULT 5 __set_modmetad=
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39: 0000000000000100 24 OBJECT LOCAL DEFAULT 9 _mod_metadata_=
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40: 0000000000000018 8 OBJECT LOCAL DEFAULT 5 __set_modmetad=
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41: 0000000000000120 24 OBJECT LOCAL DEFAULT 9 _mod_metadata_=
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42: 0000000000000008 8 OBJECT LOCAL DEFAULT 7 __set_sysinit_=
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43: 0000000000000140 24 OBJECT LOCAL DEFAULT 9 __Tunable_init=
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44: 0000000000000158 12 OBJECT LOCAL DEFAULT 9 _virtio_blk_de=
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45: 0000000000000164 4 OBJECT LOCAL DEFAULT 9 _virtio_blk_ve=
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46: 0000000000000170 24 OBJECT LOCAL DEFAULT 9 virtio_blk_vir=
tio_pci_mod
47: 0000000000000188 12 OBJECT LOCAL DEFAULT 9 _virtio_blk_vi=
rtio_pci_de
48: 00000000000001a0 16 OBJECT LOCAL DEFAULT 9 __tunable_int_=
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49: 00000000000001c0 48 OBJECT LOCAL DEFAULT 9 virtio_blk_vir=
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50: 0000000000000200 48 OBJECT LOCAL DEFAULT 9 vtblk_driver
51: 0000000000000010 8 OBJECT LOCAL DEFAULT 11 vtblk_devclass=
52: 0000000000000240 112 OBJECT LOCAL DEFAULT 9 vtblk_methods
53: 0000000000000000 0 SECTION LOCAL DEFAULT 5=20
54: 0000000000000000 0 SECTION LOCAL DEFAULT 7=20
55: 0000000000000000 0 SECTION LOCAL DEFAULT 12=20
56: 0000000000000000 0 SECTION LOCAL DEFAULT 13=20
57: 0000000000000000 0 SECTION LOCAL DEFAULT 14=20
58: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtio_reinit
59: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND device_get_sof=
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60: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND device_shutdow=
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61: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND device_set_des=
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62: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND taskqueue_drai=
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63: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_poll=
64: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND uma_zdestroy
65: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND device_suspend=
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66: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_full=
67: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND snprintf
68: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND __start_set_mo=
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69: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND __stack_chk_gu=
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70: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND biodone
71: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND taskqueue_thre=
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72: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND __stop_set_pcp=
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73: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND device_attach_=
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74: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND bioq_disksort
75: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND mtx_destroy
76: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND sglist_append
77: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND uma_zalloc_arg=
78: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND device_printf
79: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND _mtx_lock_flag=
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80: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND device_get_nam=
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81: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtio_reinit_=
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82: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND mtx_init
83: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtio_read_de=
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84: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_size=
85: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND module_registe=
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86: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND bioq_init
87: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND bzero
88: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND taskqueue_enqu=
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89: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND __stack_chk_fa=
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90: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtio_get_dev=
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91: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND __stop_set_sys=
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92: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND sglist_free
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94: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_enab=
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96: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_noti=
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98: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND _mtx_unlock_fl=
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99: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_dequ=
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102: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND panic
103: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND tunable_int_in=
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104: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtio_set_fea=
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105: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND uma_zone_get_c=
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106: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND device_resume_=
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107: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtio_negotia=
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108: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtio_setup_i=
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109: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND disk_create
110: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND device_is_atta=
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111: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND biofinish
112: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND disk_alloc
113: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_disa=
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114: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtio_stop
115: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND taskqueue_star=
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116: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND taskqueue_crea=
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117: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_enqu=
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119: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND bootverbose
120: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND disk_destroy
121: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND device_detach_=
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122: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND uma_zcreate
123: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND bioq_takefirst=
124: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND __start_set_pc=
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125: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND device_probe_d=
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126: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtio_alloc_v=
irtqueues
127: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtio_with_fe=
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128: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND __stop_set_mod=
metadata_se
129: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND virtqueue_empt=
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130: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND uma_zfree_arg
131: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND bioq_first
No version information found in this file.
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