Re: [Crash-utility] Kernel Crash Analysis on Android
by Shankar, AmarX
Hi Dave,
Thanks for your info regarding kexec tool.
I am unable to download kexec from below link.
http://www.kernel.org/pub/linux/kernel/people/horms/kexec-tools/kexec-too...
It says HTTP 404 Page Not Found.
Could you please guide me on this?
Thanks & Regards,
Amar Shankar
> On Wed, Mar 21, 2012 at 06:00:00PM +0000, Shankar, AmarX wrote:
>
> > I want to do kernel crash Analysis on Android Merrifield Target.
> >
> > Could someone please help me how to do it?
>
> Merrifield is pretty much similar than Medfield, e.g it has x86 core. So I
> guess you can follow the instructions how to setup kdump on x86 (see
> Documentation/kdump/kdump.txt) unless you already have that configured.
>
> crash should support this directly presuming you have vmlinux/vmcore files to
> feed it. You can configure crash to support x86 on x86_64 host by running:
>
> % make target=X86
> & make
>
> (or something along those lines).
Right -- just the first make command will suffice, i.e., when running
on an x86_64 host:
$ wget http://people.redhat.com/anderson/crash-6.0.4.tar.gz
$ tar xzf crash-6.0.4.tar.gz
...
$ cd crash-6.0.4
$ make target=X86
...
$ ./crash <path-to>/vmlinux <path-to>/vmcore
Dave
From: Shankar, AmarX
Sent: Wednesday, March 21, 2012 11:30 PM
To: 'crash-utility(a)redhat.com'
Subject: Kernel Crash Analysis on Android
Hi,
I want to do kernel crash Analysis on Android Merrifield Target.
Could someone please help me how to do it?
Thanks & Regards,
Amar Shankar
8 months, 2 weeks
- 2
- 1
[PATCH] kmem, snap: iomem/ioport display and vmcore snapshot support
by HATAYAMA Daisuke
Some days ago I was in a situation that I had to convert vmcore in
kvmdump format into ELF since some extension module we have locally
can be used only on relatively old crash utility, around version 4,
but such old crash utility cannot handle kvmdump format.
To do the conversion in handy, I used snap command with some modifications
so that it tries to use iomem information in vmcore instead of host's
/proc/iomem. This patch is its cleaned-up version.
In this development, I naturally got down to also making an interface
for an access to resource objects, and so together with the snap
command's patch, I also extended kmem command for iomem/ioport
support. Actually:
kmem -r displays /proc/iomem
crash> kmem -r
00000000-0000ffff : reserved
00010000-0009dbff : System RAM
0009dc00-0009ffff : reserved
000c0000-000c7fff : Video ROM
...
and kmem -R displays /proc/ioport
crash> kmem -R
0000-001f : dma1
0020-0021 : pic1
0040-0043 : timer0
0050-0053 : timer1
...
Looking into old version of kernel source code back, resource structure
has been unchanged since linux-2.4.0. I borrowed the way of walking on
resouce tree in this patch from the lastest v3.3-rc series, but I
guess the logic is also applicable to old kernels. I expect Dave's
regression testsuite.
Also, there would be another command more sutable for iomem/ioport.
If necessay, I'll repost the patch.
---
HATAYAMA Daisuke (4):
Add vmcore snapshot support
Add kmem -r and -R options
Add dump iomem/ioport functions; a helper for resource objects
Add a helper function for iterating resource objects
defs.h | 9 ++++
extensions/snap.c | 54 ++++++++++++++++++++++-
help.c | 2 +
memory.c | 122 +++++++++++++++++++++++++++++++++++++++++++++++++++--
4 files changed, 180 insertions(+), 7 deletions(-)
--
Thanks.
HATAYAMA Daisuke
8 months, 2 weeks
- 2
- 4
Re: [Crash-utility] question about phys_base
by Dave Anderson
----- Original Message -----
> >
> > OK, so then I don't understand what you mean by "may be the same"?
> >
> > You didn't answer my original question, but if I understand you correctly,
> > it would be impossible for the qemu host to create a PT_LOAD segment that
> > describes an x86_64 guest's __START_KERNEL_map region, because the host
> > doesn't know that what kind of kernel the guest is running.
>
> Yes. Even if the guest is linux, it is still impossible to do it. Because
> the guest maybe in the second kernel.
>
> qemu-dump walks all guest's page table and collect virtual address and
> physical address mapping. If the page is not used by guest, the virtual is set
> to 0. I create PT_LOAD according to such mapping. So if the guest is linux,
> there may be a PT_LOAD segment that describes __START_KERNEL_map region.
> But the information stored in PT_LOAD maybe for the second kernel. If crash
> uses it, crash will see the second kernel, not the first kernel.
Just to be clear -- what do you mean by the "second" kernel? Do you
mean that a guest kernel crashed guest, and did a kdump operation,
and that second kdump kernel failed somehow, and now you're trying
to do a "virsh dump" on the kdump kernel?
Dave
8 months, 2 weeks
- 3
- 16
[PATCH makedumpfile 0/2] LZO Compression Support
by HATAYAMA Daisuke
The following series implements LZO compression support to
makedumpfile. LZO is as good as in size but by far better in speed
than ZLIB, readucing down time during generation of crash dump and
refiltering.
The RFC discussion:
http://lists.infradead.org/pipermail/kexec/2011-November/005783.html
http://lists.infradead.org/pipermail/kexec/2011-December/005868.html
How to build:
1. Get lzo libraries: lzo, lzo-devel and lzo-minilzo from either of
the following:
1) Original author's website:
http://www.oberhumer.com/opensource/lzo/
2) yum framework on fedora. Older releases don't have the packages.
2. Apply the patch set to makedumpfile v1.4.2.
3. Do make.
How to use:
Introduce new -l option. If a user specify this, makedumpfile
generates dumpfile compressed by pages with lzo compression.
Example)
$ makedumpfile -l vmcore dumpfile
Performance evaluation:
- Kumagai-san's evaluation simulating actually working servers:
http://lists.infradead.org/pipermail/kexec/2011-December/005868.html
- My evaluation focusing on the worst cases:
http://lists.infradead.org/pipermail/kexec/2011-November/005783.html
LZO Support for crash:
I'll post LZO support patch for crash after makedumpfile merges
these patches.
---
HATAYAMA Daisuke (2):
Add help and manual messages about LZO compression support
Add LZO Support
Makefile | 2 +-
diskdump_mod.h | 3 ++-
makedumpfile.8 | 6 +++---
makedumpfile.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++---------
makedumpfile.h | 2 ++
print_info.c | 16 ++++++++--------
6 files changed, 64 insertions(+), 22 deletions(-)
--
HATAYAMA Daisuke
8 months, 2 weeks
- 2
- 6
question about phys_base
by Wen Congyang
Hi, Dave
I am implementing a new dump command in the qemu. The vmcore's
format is elf(like kdump). And I try to provide phys_base in
the PT_LOAD. But if the os uses the first vcpu do kdump, the
value of phys_base is wrong.
I find a function x86_64_virt_phys_base() in crash's code.
Is it OK to call this function first? If the function
successes, we do not calculate phys_base according to PT_LOAD.
Thanks
Wen Congyang
8 months, 2 weeks
- 3
- 6
[PATCH] runq: search current task's runqueue explicitly
by HATAYAMA Daisuke
Currently, runq sub-command doesn't consider CFS runqueue's current
task removed from CFS runqueue. Due to this, the remaining CFS
runqueus that follow the current task's is not displayed. This patch
fixes this by making runq sub-command search current task's runqueue
explicitly.
Note that CFS runqueue exists for each task group, and so does CFS
runqueue's current task, and the above search needs to be done
recursively.
Test
====
On vmcore I made 7 task groups:
root group --- A --- AA --- AAA
+ +- AAB
|
+- AB --- ABA
+- ABB
and then I ran three CPU bound tasks, which is exactly the same as
int main(void) { for (;;) continue; return 0; }
for each task group, including root group; so total 24 tasks. For
readability, I annotated each task name with its belonging group name.
For example, loop.ABA belongs to task group ABA.
Look at CPU0 collumn below. [before] lacks 8 tasks and [after]
successfully shows all tasks on the runqueue, which is identical to
the result of [sched debug] that is expected to ouput correct result.
I'll send this vmcore later.
[before]
crash> runq | cat
CPU 0 RUNQUEUE: ffff88000a215f80
CURRENT: PID: 28263 TASK: ffff880037aaa040 COMMAND: "loop.ABA"
RT PRIO_ARRAY: ffff88000a216098
[no tasks queued]
CFS RB_ROOT: ffff88000a216010
[120] PID: 28262 TASK: ffff880037cc40c0 COMMAND: "loop.ABA"
<cut>
[after]
crash_fix> runq
CPU 0 RUNQUEUE: ffff88000a215f80
CURRENT: PID: 28263 TASK: ffff880037aaa040 COMMAND: "loop.ABA"
RT PRIO_ARRAY: ffff88000a216098
[no tasks queued]
CFS RB_ROOT: ffff88000a216010
[120] PID: 28262 TASK: ffff880037cc40c0 COMMAND: "loop.ABA"
[120] PID: 28271 TASK: ffff8800787a8b40 COMMAND: "loop.ABB"
[120] PID: 28272 TASK: ffff880037afd580 COMMAND: "loop.ABB"
[120] PID: 28245 TASK: ffff8800785e8b00 COMMAND: "loop.AB"
[120] PID: 28246 TASK: ffff880078628ac0 COMMAND: "loop.AB"
[120] PID: 28241 TASK: ffff880078616b40 COMMAND: "loop.AA"
[120] PID: 28239 TASK: ffff8800785774c0 COMMAND: "loop.AA"
[120] PID: 28240 TASK: ffff880078617580 COMMAND: "loop.AA"
[120] PID: 28232 TASK: ffff880079b5d4c0 COMMAND: "loop.A"
<cut>
[sched debug]
crash> runq -d
CPU 0
[120] PID: 28232 TASK: ffff880079b5d4c0 COMMAND: "loop.A"
[120] PID: 28239 TASK: ffff8800785774c0 COMMAND: "loop.AA"
[120] PID: 28240 TASK: ffff880078617580 COMMAND: "loop.AA"
[120] PID: 28241 TASK: ffff880078616b40 COMMAND: "loop.AA"
[120] PID: 28245 TASK: ffff8800785e8b00 COMMAND: "loop.AB"
[120] PID: 28246 TASK: ffff880078628ac0 COMMAND: "loop.AB"
[120] PID: 28262 TASK: ffff880037cc40c0 COMMAND: "loop.ABA"
[120] PID: 28263 TASK: ffff880037aaa040 COMMAND: "loop.ABA"
[120] PID: 28271 TASK: ffff8800787a8b40 COMMAND: "loop.ABB"
[120] PID: 28272 TASK: ffff880037afd580 COMMAND: "loop.ABB"
<cut>
Diff stat
=========
defs.h | 1 +
task.c | 37 +++++++++++++++++--------------------
2 files changed, 18 insertions(+), 20 deletions(-)
Thanks.
HATAYAMA, Daisuke
8 months, 2 weeks
- 2
- 2
[RFC] makedumpfile, crash: LZO compression support
by HATAYAMA Daisuke
Hello,
This is a RFC patch set that adds LZO compression support to
makedumpfile and crash utility. LZO is as good as in size but by far
better in speed than ZLIB, leading to reducing down time during
generation of crash dump and refiltering.
How to build:
1. Get LZO library, which is provided as lzo-devel package on recent
linux distributions, and is also available on author's website:
http://www.oberhumer.com/opensource/lzo/.
2. Apply the patch set to makedumpfile v1.4.0 and crash v6.0.0.
3. Build both using make. But for crash, do the following now:
$ make CFLAGS="-llzo2"
How to use:
I've newly used -l option for lzo compression in this patch. So for
example, do as follows:
$ makedumpfile -l vmcore dumpfile
$ crash vmlinux dumpfile
Request of configure-like feature for crash utility:
I would like configure-like feature on crash utility for users to
select wheather to add LZO feature actually or not in build-time,
that is: ./configure --enable-lzo or ./configure --disable-lzo.
The reason is that support staff often downloads and installs the
latest version of crash utility on machines where lzo library is not
provided.
Looking at the source code, it looks to me that crash does some kind
of configuration processing in a local manner, around configure.c,
and I guess it's difficult to use autoconf tools directly.
Or is there another better way?
Performance Comparison:
Sample Data
Ideally, I must have measured the performance for many enough
vmcores generated from machines that was actually running, but now
I don't have enough sample vmcores, I couldn't do so. So this
comparison doesn't answer question on I/O time improvement. This
is TODO for now.
Instead, I choosed worst and best cases regarding compression
ratio and speed only. Specifically, the former is /dev/urandom and
the latter is /dev/zero.
I get the sample data of 10MB, 100MB and 1GB by doing like this:
$ dd bs=4096 count=$((1024*1024*1024/4096)) if=/dev/urandom of=urandom.1GB
How to measure
Then I performed compression for each block, 4096 bytes, and
measured total compression time and output size. See attached
mycompress.c.
Result
See attached file result.txt.
Discussion
For both kinds of data, lzo's compression was considerably quicker
than zlib's. Compression ratio is about 37% for urandom data, and
about 8.5% for zero data. Actual situation of physical memory
would be in between the two cases, and so I guess average
compression time ratio is between 37% and 8.5%.
Although beyond the topic of this patch set, we can estimate worst
compression time on more data size since compression is performed
block size wise and the compression time increases
linearly. Estimated worst time on 2TB memory is about 15 hours for
lzo and about 40 hours for zlib. In this case, compressed data
size is larger than the original, so they are really not used,
compression time is fully meaningless. I think compression must be
done in parallel, and I'll post such patch later.
Diffstat
* makedumpfile
diskdump_mod.h | 3 +-
makedumpfile.c | 98 +++++++++++++++++++++++++++++++++++++++++++++++++------
makedumpfile.h | 12 +++++++
3 files changed, 101 insertions(+), 12 deletions(-)
* crash
defs.h | 1 +
diskdump.c | 20 +++++++++++++++++++-
diskdump.h | 3 ++-
3 files changed, 22 insertions(+), 2 deletions(-)
TODO
* evaluation including I/O time using actual vmcores
Thanks.
HATAYAMA, Daisuke
8 months, 2 weeks
- 3
- 15
Re: [Crash-utility] [RFI] Support Fujitsu's sadump dump format
by tachibana＠mxm.nes.nec.co.jp
Hi Hatayama-san,
On 2011/06/29 12:12:18 +0900, HATAYAMA Daisuke <d.hatayama(a)jp.fujitsu.com> wrote:
> From: Dave Anderson <anderson(a)redhat.com>
> Subject: Re: [Crash-utility] [RFI] Support Fujitsu's sadump dump format
> Date: Tue, 28 Jun 2011 08:57:42 -0400 (EDT)
>
> >
> >
> > ----- Original Message -----
> >> Fujitsu has stand-alone dump mechanism based on firmware level
> >> functionality, which we call SADUMP, in short.
> >>
> >> We've maintained utility tools internally but now we're thinking that
> >> the best is crash utility and makedumpfile supports the sadump format
> >> for the viewpoint of both portability and maintainability.
> >>
> >> We'll be of course responsible for its maintainance in a continuous
> >> manner. The sadump dump format is very similar to diskdump format and
> >> so kdump (compressed) format, so we estimate patch set would be a
> >> relatively small size.
> >>
> >> Could you tell me whether crash utility and makedumpfile can support
> >> the sadump format? If OK, we'll start to make patchset.
I think it's not bad to support sadump by makedumpfile. However I have
several questions.
- Do you want to use makedumpfile to make an existing file that sadump has
dumped small?
- It isn't possible to support the same form as kdump-compressed format
now, is it?
- When the information that makedumpfile reads from a note of /proc/vmcore
(or a header of kdump-compressed format) is added by an extension of
makedumpfile, do you need to modify sadump?
Thanks
tachibana
> >
> > Sure, yes, the crash utility can always support another dumpfile format.
> >
>
> Thanks. It helps a lot.
>
> > It's unclear to me how similar SADUMP is to diskdump/compressed-kdump.
> > Does your internal version patch diskdump.c, or do you maintain your
> > own "sadump.c"? I ask because if your patchset is at all intrusive,
> > I'd prefer it be kept in its own file, primarily for maintainability,
> > but also because SADUMP is essentially a black-box to anybody outside
> > Fujitsu.
>
> What I meant when I used ``similar'' is both literally and
> logically. The format consists of diskdump header-like header, two
> kinds of bitmaps used for the same purpose as those in diskump format,
> and memory data. They can be handled in common with the existing data
> structure, diskdump_data, non-intrusively, so I hope they are placed
> in diskdump.c.
>
> On the other hand, there's a code to be placed at such specific
> area. sadump is triggered depending on kdump's progress and so
> register values to be contained in vmcore varies according to the
> progress: If crash_notes has been initialized when sadump is
> triggered, sadump packs the register values in crash_notes; if not
> yet, packs registers gathered by firmware. This is sadump specific
> processing, so I think putting it in specific sadump.c file is a
> natural and reasonable choise.
>
> Anyway, I have not made any patch set for this. I'll post a patch set
> when I complete.
>
> Again, thanks a lot for the positive answer.
>
> Thanks.
> HATAYAMA, Daisuke
>
>
> _______________________________________________
> kexec mailing list
> kexec(a)lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/kexec
8 months, 2 weeks
- 3
- 5
[PATCH] Fix failure of gathering task table on linux-next (Linux 6.5 and later?)
by HAGIO KAZUHITO(萩尾 一仁)
From: Kazuhito Hagio <k-hagio-ab(a)nec.com>
(The following commit is now in linux-next.)
Kernel commit 757777eef55b ("pid: Replace struct pid 1-element array
with flex-array") changed pid.numbers[1] to pid.numbers[]. With this,
the size of struct pid does not contain the size of struct upid:
(gdb) ptype /o struct pid
/* offset | size */ type = struct pid {
/* 0 | 4 */ refcount_t count;
...
/* 96 | 0 */ struct upid numbers[];
^^^^ ^^^
/* total size (bytes): 96 */
} ^^^^
As a result, in refresh_xarray_task_table(), crash does not read the
data of pid.numbers[0].ns and cannot gather the task table correctly.
$ crash vmlinux vmcore
...
WARNING: active task ffff936992ad0000 on cpu 1 not found in PID hash
...
crash> ps -S
RU: 9
crash>
Increase the size of reading struct pid by SIZE(upid) in this case.
Signed-off-by: Kazuhito Hagio <k-hagio-ab(a)nec.com>
---
defs.h | 1 +
symbols.c | 3 +++
task.c | 10 ++++++++--
3 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/defs.h b/defs.h
index 3e7d6cfbc6a8..dc7c822055f0 100644
--- a/defs.h
+++ b/defs.h
@@ -2424,6 +2424,7 @@ struct array_table {
int task_struct_rlim;
int signal_struct_rlim;
int vm_numa_stat;
+ int pid_numbers;
};
/*
diff --git a/symbols.c b/symbols.c
index 7b1d59203b90..ec2878bf41d6 100644
--- a/symbols.c
+++ b/symbols.c
@@ -8741,6 +8741,8 @@ builtin_array_length(char *s, int len, int *two_dim)
lenptr = &array_table.signal_struct_rlim;
else if (STREQ(s, "vm_numa_stat"))
lenptr = &array_table.vm_numa_stat;
+ else if (STREQ(s, "pid.numbers"))
+ lenptr = &array_table.pid_numbers;
if (!lenptr) /* not stored */
return(len);
@@ -11139,6 +11141,7 @@ dump_offset_table(char *spec, ulong makestruct)
ARRAY_LENGTH(signal_struct_rlim));
fprintf(fp, " vm_numa_stat: %d\n",
ARRAY_LENGTH(vm_numa_stat));
+ fprintf(fp, " pid_numbers: %d\n", ARRAY_LENGTH(pid_numbers));
if (spec) {
int in_size_table, in_array_table, arrays, offsets, sizes;
diff --git a/task.c b/task.c
index 2b7467b4193d..d1af4df025b9 100644
--- a/task.c
+++ b/task.c
@@ -352,6 +352,7 @@ task_init(void)
MEMBER_OFFSET_INIT(upid_ns, "upid", "ns");
MEMBER_OFFSET_INIT(upid_pid_chain, "upid", "pid_chain");
MEMBER_OFFSET_INIT(pid_numbers, "pid", "numbers");
+ ARRAY_LENGTH_INIT(len, pid_numbers, "pid.numbers", NULL, 0);
MEMBER_OFFSET_INIT(pid_tasks, "pid", "tasks");
tt->init_pid_ns = symbol_value("init_pid_ns");
}
@@ -2574,6 +2575,7 @@ refresh_xarray_task_table(void)
char *tp;
struct list_pair xp;
char *pidbuf;
+ long pid_size = SIZE(pid);
if (DUMPFILE() && (tt->flags & TASK_INIT_DONE)) /* impossible */
return;
@@ -2603,8 +2605,12 @@ refresh_xarray_task_table(void)
if (CRASHDEBUG(1))
console("xarray: count: %ld\n", count);
+ /* 6.5: 757777eef55b changed pid.numbers[1] to numbers[] */
+ if (ARRAY_LENGTH(pid_numbers) == 0)
+ pid_size += SIZE(upid);
+
retries = 0;
- pidbuf = GETBUF(SIZE(pid));
+ pidbuf = GETBUF(pid_size);
retry_xarray:
if (retries && DUMPFILE())
@@ -2672,7 +2678,7 @@ retry_xarray:
* - get task from address of task->pids[0]
*/
if (!readmem(next, KVADDR, pidbuf,
- SIZE(pid), "pid", RETURN_ON_ERROR|QUIET)) {
+ pid_size, "pid", RETURN_ON_ERROR|QUIET)) {
error(INFO, "\ncannot read pid struct from xarray\n");
if (DUMPFILE())
continue;
--
2.31.1
1 year
- 2
- 3
[PATCH v2] Support module memory layout change on Linux 6.4
by HAGIO KAZUHITO(萩尾 一仁)
Support module memory layout change on Linux 6.4 by kernel commit
ac3b43283923 ("module: replace module_layout with module_memory") [1].
Without the patch, crash cannot even start a session with an error
message like this:
crash: invalid structure member offset: module_core_size
FILE: kernel.c LINE: 3787 FUNCTION: module_init()
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit...
Signed-off-by: Kazuhito Hagio <k-hagio-ab(a)nec.com>
---
v1 -> v2
- Made several functions in symbol.c static
- Fixed a compilation warning on gdb-10.2/gdb/symtab.c
- Fixed a compilation error with an old gcc like RHEL7
- Fixed a v1 bug, "sym" doesn't show multiple symbols with the same name:
crash> sym cleanup_module
ffffffffc07fc8c0 (T) cleanup_module [dm_mod]
crash>
v1: https://listman.redhat.com/archives/crash-utility/2023-June/010806.html
RFC: https://listman.redhat.com/archives/crash-utility/2023-May/010647.html
defs.h | 46 +-
gdb-10.2.patch | 25 +
kernel.c | 56 +-
memory.c | 38 +-
symbols.c | 1609 ++++++++++++++++++++++++++++++++++++++++++++----
5 files changed, 1629 insertions(+), 145 deletions(-)
diff --git a/defs.h b/defs.h
index 3e7d6cfbc6a8..414853660dc1 100644
--- a/defs.h
+++ b/defs.h
@@ -675,6 +675,7 @@ struct new_utsname {
#define IRQ_DESC_TREE_RADIX (0x40ULL)
#define IRQ_DESC_TREE_XARRAY (0x80ULL)
#define KMOD_PAX (0x100ULL)
+#define KMOD_MEMORY (0x200ULL)
#define XEN() (kt->flags & ARCH_XEN)
#define OPENVZ() (kt->flags & ARCH_OPENVZ)
@@ -682,6 +683,7 @@ struct new_utsname {
#define PVOPS_XEN() (kt->flags & ARCH_PVOPS_XEN)
#define PAX_MODULE_SPLIT() (kt->flags2 & KMOD_PAX)
+#define MODULE_MEMORY() (kt->flags2 & KMOD_MEMORY)
#define XEN_MACHINE_TO_MFN(m) ((ulonglong)(m) >> PAGESHIFT())
#define XEN_PFN_TO_PSEUDO(p) ((ulonglong)(p) << PAGESHIFT())
@@ -2217,6 +2219,9 @@ struct offset_table { /* stash of commonly-used offsets */
long kset_kobj;
long subsys_private_subsys;
long vmap_area_purge_list;
+ long module_mem;
+ long module_memory_base;
+ long module_memory_size;
};
struct size_table { /* stash of commonly-used sizes */
@@ -2390,6 +2395,7 @@ struct size_table { /* stash of commonly-used sizes */
long percpu_counter;
long maple_tree;
long maple_node;
+ long module_memory;
};
struct array_table {
@@ -2922,6 +2928,23 @@ struct mod_section_data {
ulong size;
int priority;
int flags;
+ ulong addr;
+};
+
+/* Emulate enum mod_mem_type in include/linux/module.h */
+#define MOD_TEXT (0)
+#define MOD_DATA (1)
+#define MOD_RODATA (2)
+#define MOD_RO_AFTER_INIT (3)
+#define MOD_INIT_TEXT (4)
+#define MOD_INIT_DATA (5)
+#define MOD_INIT_RODATA (6)
+#define MOD_MEM_NUM_TYPES (7)
+#define MOD_INVALID (-1)
+
+struct module_memory {
+ ulong base;
+ uint size;
};
struct load_module {
@@ -2957,19 +2980,29 @@ struct load_module {
ulong mod_percpu;
ulong mod_percpu_size;
struct objfile *loaded_objfile;
-};
-#define IN_MODULE(A,L) \
- (((ulong)(A) >= (L)->mod_base) && ((ulong)(A) < ((L)->mod_base+(L)->mod_size)))
-
-#define IN_MODULE_INIT(A,L) \
- (((ulong)(A) >= (L)->mod_init_module_ptr) && ((ulong)(A) < ((L)->mod_init_module_ptr+(L)->mod_init_size)))
+ /* For 6.4 module_memory */
+ struct module_memory mem[MOD_MEM_NUM_TYPES];
+ struct syment **symtable;
+ struct syment **symend;
+ struct syment *ext_symtable[MOD_MEM_NUM_TYPES];
+ struct syment *ext_symend[MOD_MEM_NUM_TYPES];
+ struct syment *load_symtable[MOD_MEM_NUM_TYPES];
+ struct syment *load_symend[MOD_MEM_NUM_TYPES];
+};
+#define IN_MODULE(A,L) (in_module_range(A, L, MOD_TEXT, MOD_RO_AFTER_INIT) != MOD_INVALID)
+#define IN_MODULE_INIT(A,L) (in_module_range(A, L, MOD_INIT_TEXT, MOD_INIT_RODATA) != MOD_INVALID)
+#define IN_MODULE_TEXT(A,L) (in_module_range(A, L, MOD_TEXT, MOD_TEXT) == MOD_TEXT || \
+ in_module_range(A, L, MOD_INIT_TEXT, MOD_INIT_TEXT) == MOD_INIT_TEXT)
#define IN_MODULE_PERCPU(A,L) \
(((ulong)(A) >= (L)->mod_percpu) && ((ulong)(A) < ((L)->mod_percpu+(L)->mod_percpu_size)))
#define MODULE_PERCPU_SYMS_LOADED(L) ((L)->mod_percpu && (L)->mod_percpu_size)
+#define for_each_mod_mem_type(type) \
+ for ((type) = MOD_TEXT; (type) < MOD_MEM_NUM_TYPES; (type)++)
+
#ifndef GDB_COMMON
#define KVADDR (0x1)
@@ -5588,6 +5621,7 @@ void dump_struct_member(char *, ulong, unsigned);
void dump_union(char *, ulong, unsigned);
void store_module_symbols_v1(ulong, int);
void store_module_symbols_v2(ulong, int);
+void store_module_symbols_6_4(ulong, int);
int is_datatype_command(void);
int is_typedef(char *);
int arg_to_datatype(char *, struct datatype_member *, ulong);
diff --git a/gdb-10.2.patch b/gdb-10.2.patch
index 835aae9859be..16228b1dbf73 100644
--- a/gdb-10.2.patch
+++ b/gdb-10.2.patch
@@ -3120,3 +3120,28 @@ exit 0
return result;
}
+--- gdb-10.2/gdb/symtab.c.orig
++++ gdb-10.2/gdb/symtab.c
+@@ -7476,7 +7476,7 @@ gdb_add_symbol_file(struct gnu_request *
+ int i;
+ int allsect = 0;
+ char *secname;
+- char buf[80];
++ char buf[96];
+
+ gdb_current_load_module = lm = (struct load_module *)req->addr;
+
+@@ -7515,8 +7515,11 @@ gdb_add_symbol_file(struct gnu_request *
+ secname = lm->mod_section_data[i].name;
+ if ((lm->mod_section_data[i].flags & SEC_FOUND) &&
+ !STREQ(secname, ".text")) {
+- sprintf(buf, " -s %s 0x%lx", secname,
+- lm->mod_section_data[i].offset + lm->mod_base);
++ if (lm->mod_section_data[i].addr)
++ sprintf(buf, " -s %s 0x%lx", secname, lm->mod_section_data[i].addr);
++ else
++ sprintf(buf, " -s %s 0x%lx", secname,
++ lm->mod_section_data[i].offset + lm->mod_base);
+ strcat(req->buf, buf);
+ }
+ }
diff --git a/kernel.c b/kernel.c
index 6e98f5f6f6b1..639ed64f306a 100644
--- a/kernel.c
+++ b/kernel.c
@@ -3571,7 +3571,21 @@ module_init(void)
MEMBER_OFFSET_INIT(module_num_gpl_syms, "module",
"num_gpl_syms");
- if (MEMBER_EXISTS("module", "module_core")) {
+ if (MEMBER_EXISTS("module", "mem")) { /* 6.4 and later */
+ kt->flags2 |= KMOD_MEMORY; /* MODULE_MEMORY() can be used. */
+
+ MEMBER_OFFSET_INIT(module_mem, "module", "mem");
+ MEMBER_OFFSET_INIT(module_memory_base, "module_memory", "base");
+ MEMBER_OFFSET_INIT(module_memory_size, "module_memory", "size");
+ STRUCT_SIZE_INIT(module_memory, "module_memory");
+
+ if (CRASHDEBUG(1))
+ error(INFO, "struct module_memory detected.\n");
+
+ if (get_array_length("module.mem", NULL, 0) != MOD_MEM_NUM_TYPES)
+ error(WARNING, "module memory types have changed!\n");
+
+ } else if (MEMBER_EXISTS("module", "module_core")) {
MEMBER_OFFSET_INIT(module_core_size, "module",
"core_size");
MEMBER_OFFSET_INIT(module_init_size, "module",
@@ -3757,6 +3771,8 @@ module_init(void)
total += nsyms;
total += 2; /* store the module's start/ending addresses */
total += 2; /* and the init start/ending addresses */
+ if (MODULE_MEMORY()) /* 7 regions at most -> 14, so needs +10 */
+ total += 10;
/*
* If the module has kallsyms, set up to grab them as well.
@@ -3784,7 +3800,11 @@ module_init(void)
case KALLSYMS_V2:
if (THIS_KERNEL_VERSION >= LINUX(2,6,27)) {
numksyms = UINT(modbuf + OFFSET(module_num_symtab));
- size = UINT(modbuf + MODULE_OFFSET2(module_core_size, rx));
+ if (MODULE_MEMORY())
+ /* check mem[MOD_TEXT].size only */
+ size = UINT(modbuf + OFFSET(module_mem) + OFFSET(module_memory_size));
+ else
+ size = UINT(modbuf + MODULE_OFFSET2(module_core_size, rx));
} else {
numksyms = ULONG(modbuf + OFFSET(module_num_symtab));
size = ULONG(modbuf + MODULE_OFFSET2(module_core_size, rx));
@@ -3822,7 +3842,10 @@ module_init(void)
store_module_symbols_v1(total, kt->mods_installed);
break;
case KMOD_V2:
- store_module_symbols_v2(total, kt->mods_installed);
+ if (MODULE_MEMORY())
+ store_module_symbols_6_4(total, kt->mods_installed);
+ else
+ store_module_symbols_v2(total, kt->mods_installed);
break;
}
@@ -3836,7 +3859,7 @@ module_init(void)
static int
verify_modules(void)
{
- int i;
+ int i, t;
int found, irregularities;
ulong mod, mod_next, mod_base;
long mod_size;
@@ -3893,8 +3916,13 @@ verify_modules(void)
mod_base = mod;
break;
case KMOD_V2:
- mod_base = ULONG(modbuf +
- MODULE_OFFSET2(module_module_core, rx));
+ if (MODULE_MEMORY())
+ /* mem[MOD_TEXT].base */
+ mod_base = ULONG(modbuf + OFFSET(module_mem) +
+ OFFSET(module_memory_base));
+ else
+ mod_base = ULONG(modbuf +
+ MODULE_OFFSET2(module_module_core, rx));
break;
}
@@ -3916,7 +3944,17 @@ verify_modules(void)
case KMOD_V2:
module_name = modbuf +
OFFSET(module_name);
- if (THIS_KERNEL_VERSION >= LINUX(2,6,27))
+ if (MODULE_MEMORY()) {
+ mod_size = 0;
+ for_each_mod_mem_type(t) {
+ if (t == MOD_INIT_TEXT)
+ break;
+
+ mod_size += UINT(modbuf + OFFSET(module_mem) +
+ SIZE(module_memory) * t +
+ OFFSET(module_memory_size));
+ }
+ } else if (THIS_KERNEL_VERSION >= LINUX(2,6,27))
mod_size = UINT(modbuf +
MODULE_OFFSET2(module_core_size, rx));
else
@@ -4536,7 +4574,7 @@ do_module_cmd(ulong flag, char *modref, ulong address,
"MODULE"),
mkstring(buf2, maxnamelen, LJUST, "NAME"),
mkstring(buf4, VADDR_PRLEN, CENTER|LJUST,
- "BASE"),
+ MODULE_MEMORY() ? "TEXT_BASE" : "BASE"),
mkstring(buf3, maxsizelen, RJUST, "SIZE"));
}
@@ -6144,6 +6182,8 @@ dump_kernel_table(int verbose)
fprintf(fp, "%sIRQ_DESC_TREE_XARRAY", others++ ? "|" : "");
if (kt->flags2 & KMOD_PAX)
fprintf(fp, "%sKMOD_PAX", others++ ? "|" : "");
+ if (kt->flags2 & KMOD_MEMORY)
+ fprintf(fp, "%sKMOD_MEMORY", others++ ? "|" : "");
fprintf(fp, ")\n");
fprintf(fp, " stext: %lx\n", kt->stext);
diff --git a/memory.c b/memory.c
index ea3005a5c01f..acbee6389472 100644
--- a/memory.c
+++ b/memory.c
@@ -15712,10 +15712,44 @@ in_vmlist_segment(ulong vaddr)
static int
next_module_vaddr(ulong vaddr, ulong *nextvaddr)
{
- int i;
- ulong start, end;
+ int i, t;
+ ulong start, end, min = (ulong)-1;
struct load_module *lm;
+ if (!MODULE_MEMORY())
+ goto old_module;
+
+ for (i = 0; i < st->mods_installed; i++) {
+ lm = &st->load_modules[i];
+
+ for_each_mod_mem_type(t) {
+ if (!lm->mem[t].size)
+ continue;
+
+ start = lm->mem[t].base;
+ end = start + lm->mem[t].size;
+
+ if (vaddr >= end)
+ continue;
+
+ if (vaddr < start) {
+ if (start < min) /* replace candidate */
+ min = start;
+ continue;
+ }
+
+ *nextvaddr = vaddr;
+ return TRUE;
+ }
+ }
+
+ if (min != (ulong)-1) {
+ *nextvaddr = min;
+ return TRUE;
+ }
+ return FALSE;
+
+old_module:
for (i = 0; i < st->mods_installed; i++) {
lm = &st->load_modules[i];
start = lm->mod_base;
diff --git a/symbols.c b/symbols.c
index 7b1d59203b90..f161ee99e90a 100644
--- a/symbols.c
+++ b/symbols.c
@@ -48,8 +48,8 @@ static int load_module_index(struct syment *);
static void section_header_info(bfd *, asection *, void *);
static void store_section_data(struct load_module *, bfd *, asection *);
static void calculate_load_order_v1(struct load_module *, bfd *);
-static void calculate_load_order_v2(struct load_module *, bfd *, int,
- void *, long, unsigned int);
+static void calculate_load_order_v2(struct load_module *, bfd *, int, void *, long, unsigned int);
+static void calculate_load_order_6_4(struct load_module *, bfd *, int, void *, long, unsigned int);
static void check_insmod_builtin(struct load_module *, int, ulong *);
static int is_insmod_builtin(struct load_module *, struct syment *);
struct load_module;
@@ -104,6 +104,42 @@ static unsigned char is_right_brace(const char *);
static struct struct_elem *find_node(struct struct_elem *, char *);
static void dump_node(struct struct_elem *, char *, unsigned char, unsigned char);
+static int module_mem_type(ulong, struct load_module *);
+static ulong module_mem_end(ulong, struct load_module *);
+static int in_module_range(ulong, struct load_module *, int, int);
+static struct syment *value_search_module_6_4(ulong, ulong *);
+static struct syment *next_symbol_by_symname(char *);
+static struct syment *prev_symbol_by_symname(char *);
+static struct syment *next_module_symbol_by_value(ulong);
+static struct syment *prev_module_symbol_by_value(ulong);
+static struct syment *next_module_symbol_by_syment(struct syment *);
+static struct syment *prev_module_symbol_by_syment(struct syment *);
+
+struct module_tag {
+ char *start;
+ char *end;
+ char *start_str;
+ char *end_str;
+};
+
+#define MODULE_TAG(type, suffix) ("_MODULE_" #type "_" #suffix "_")
+#define MODULE_STR(type, suffix) ( "MODULE " #type " " #suffix)
+#define MODULE_TAGS(type) { \
+ .start = MODULE_TAG(type, START), \
+ .end = MODULE_TAG(type, END), \
+ .start_str = MODULE_STR(type, START), \
+ .end_str = MODULE_STR(type, END) \
+}
+
+static const struct module_tag module_tag[] = {
+ MODULE_TAGS(TEXT),
+ MODULE_TAGS(DATA),
+ MODULE_TAGS(RODATA),
+ MODULE_TAGS(RO_AFTER_INIT),
+ MODULE_TAGS(INIT_TEXT),
+ MODULE_TAGS(INIT_DATA),
+ MODULE_TAGS(INIT_RODATA),
+};
/*
* structure/union printing stuff
@@ -1268,10 +1304,7 @@ symname_hash_search(struct syment *table[], char *name)
* Output for sym -[lL] command.
*/
-#define MODULE_PSEUDO_SYMBOL(sp) \
- ((STRNEQ((sp)->name, "_MODULE_START_") || STRNEQ((sp)->name, "_MODULE_END_")) || \
- (STRNEQ((sp)->name, "_MODULE_INIT_START_") || STRNEQ((sp)->name, "_MODULE_INIT_END_")) || \
- (STRNEQ((sp)->name, "_MODULE_SECTION_")))
+#define MODULE_PSEUDO_SYMBOL(sp) (STRNEQ((sp)->name, "_MODULE_"))
#define MODULE_START(sp) (STRNEQ((sp)->name, "_MODULE_START_"))
#define MODULE_END(sp) (STRNEQ((sp)->name, "_MODULE_END_"))
@@ -1280,6 +1313,76 @@ symname_hash_search(struct syment *table[], char *name)
#define MODULE_SECTION_START(sp) (STRNEQ((sp)->name, "_MODULE_SECTION_START"))
#define MODULE_SECTION_END(sp) (STRNEQ((sp)->name, "_MODULE_SECTION_END"))
+#define MODULE_MEM_START(sp,t) (STRNEQ((sp)->name, module_tag[t].start))
+#define MODULE_MEM_END(sp,t) (STRNEQ((sp)->name, module_tag[t].end))
+
+/* For 6.4 and later */
+static void
+module_symbol_dump(char *module)
+{
+ int i, t;
+ struct syment *sp, *sp_end;
+ struct load_module *lm;
+ const char *p1, *p2;
+
+ for (i = 0; i < st->mods_installed; i++) {
+
+ lm = &st->load_modules[i];
+ if (module && !STREQ(module, lm->mod_name))
+ continue;
+
+ if (received_SIGINT() || output_closed())
+ return;
+
+ /*
+ * module percpu symbols are within the .data..percpu section,
+ * not in any module memory regions.
+ */
+ if (MODULE_PERCPU_SYMS_LOADED(lm)) {
+ p1 = "MODULE PERCPU START";
+ p2 = lm->mod_name;
+ fprintf(fp, "%lx %s: %s\n", lm->mod_percpu, p1, p2);
+
+ dump_percpu_symbols(lm);
+
+ p1 = "MODULE PERCPU END";
+ fprintf(fp, "%lx %s: %s\n", lm->mod_percpu + lm->mod_percpu_size, p1, p2);
+ }
+
+ for_each_mod_mem_type(t) {
+ if (!lm->symtable[t])
+ continue;
+
+ sp = lm->symtable[t];
+ sp_end = lm->symend[t];
+
+ for ( ; sp <= sp_end; sp++) {
+ if (MODULE_PSEUDO_SYMBOL(sp)) {
+ if (MODULE_MEM_START(sp, t)) {
+ p1 = module_tag[t].start_str;
+ p2 = sp->name + strlen(module_tag[t].start);
+ } else if (MODULE_MEM_END(sp, t)) {
+ p1 = module_tag[t].end_str;
+ p2 = sp->name + strlen(module_tag[t].end);
+ } else if (MODULE_SECTION_START(sp)) {
+ p1 = sp->name + strlen("_MODULE_SECTION_START ");
+ p2 = "section start";
+ } else if (MODULE_SECTION_END(sp)) {
+ p1 = sp->name + strlen("_MODULE_SECTION_END ");
+ p2 = "section end";
+ } else {
+ p1 = "unknown tag";
+ p2 = sp->name;
+ }
+
+ fprintf(fp, "%lx %s: %s\n", sp->value, p1, p2);
+ } else
+ show_symbol(sp, 0, SHOW_RADIX());
+ }
+ }
+ }
+}
+
static void
symbol_dump(ulong flags, char *module)
{
@@ -1302,6 +1405,11 @@ symbol_dump(ulong flags, char *module)
if (!(flags & MODULE_SYMS))
return;
+ if (MODULE_MEMORY()) {
+ module_symbol_dump(module);
+ return;
+ }
+
for (i = 0; i < st->mods_installed; i++) {
lm = &st->load_modules[i];
@@ -1389,8 +1497,14 @@ dump_percpu_symbols(struct load_module *lm)
struct syment *sp, *sp_end;
if (MODULE_PERCPU_SYMS_LOADED(lm)) {
- sp = lm->mod_symtable;
- sp_end = lm->mod_symend;
+ if (MODULE_MEMORY()) {
+ /* The lm should have mod_load_symtable. */
+ sp = lm->mod_load_symtable;
+ sp_end = lm->mod_load_symend;
+ } else {
+ sp = lm->mod_symtable;
+ sp_end = lm->mod_symend;
+ }
for ( ; sp <= sp_end; sp++) {
if (IN_MODULE_PERCPU(sp->value, lm))
show_symbol(sp, 0, SHOW_RADIX());
@@ -1425,8 +1539,13 @@ check_for_dups(struct load_module *lm)
{
struct syment *sp, *sp_end;
- sp = lm->mod_symtable;
- sp_end = lm->mod_symend;
+ if (MODULE_MEMORY()) {
+ sp = lm->mod_load_symtable;
+ sp_end = lm->mod_load_symend;
+ } else {
+ sp = lm->mod_symtable;
+ sp_end = lm->mod_symend;
+ }
for ( ; sp <= sp_end; sp++) {
if (symbol_name_count(sp->name) > 1)
@@ -1788,6 +1907,362 @@ modsym_value(ulong syms, union kernel_symbol *modsym, int i)
return 0;
}
+/*
+ * Linux 6.4 introduced module.mem memory layout
+ */
+void
+store_module_symbols_6_4(ulong total, int mods_installed)
+{
+ int i, m, t;
+ ulong mod, mod_next;
+ char *mod_name;
+ uint nsyms, ngplsyms;
+ ulong syms, gpl_syms;
+ ulong nksyms;
+ long strbuflen;
+ ulong size;
+ int mcnt, lm_mcnt;
+ union kernel_symbol *modsym;
+ size_t kernel_symbol_size;
+ struct load_module *lm;
+ char buf1[BUFSIZE];
+ char buf2[BUFSIZE];
+ char *strbuf = NULL, *modbuf, *modsymbuf;
+ struct syment *sp;
+ ulong first, last;
+
+ st->mods_installed = mods_installed;
+
+ if (!st->mods_installed) {
+ st->flags &= ~MODULE_SYMS;
+ return;
+ }
+
+ /*
+ * If we've been here before, free up everything and start over.
+ */
+ if (st->flags & MODULE_SYMS)
+ error(FATAL, "re-initialization of module symbols not implemented yet!\n");
+
+ kernel_symbol_size = kernel_symbol_type_init();
+
+ if ((st->ext_module_symtable = (struct syment *)
+ calloc(total, sizeof(struct syment))) == NULL)
+ error(FATAL, "module syment space malloc (%ld symbols): %s\n",
+ total, strerror(errno));
+
+ if (!namespace_ctl(NAMESPACE_INIT, &st->ext_module_namespace,
+ (void *)total, NULL))
+ error(FATAL, "module namespace malloc: %s\n", strerror(errno));
+
+ if ((st->load_modules = (struct load_module *)calloc
+ (st->mods_installed, sizeof(struct load_module))) == NULL)
+ error(FATAL, "load_module array malloc: %s\n", strerror(errno));
+
+ modbuf = GETBUF(SIZE(module));
+ modsymbuf = NULL;
+ m = mcnt = mod_next = 0;
+
+ for (mod = kt->module_list; mod != kt->kernel_module; mod = mod_next) {
+
+ readmem(mod, KVADDR, modbuf, SIZE(module),
+ "module buffer", FAULT_ON_ERROR);
+
+ syms = ULONG(modbuf + OFFSET(module_syms));
+ gpl_syms = ULONG(modbuf + OFFSET(module_gpl_syms));
+ nsyms = UINT(modbuf + OFFSET(module_num_syms));
+ ngplsyms = UINT(modbuf + OFFSET(module_num_gpl_syms));
+
+ nksyms = UINT(modbuf + OFFSET(module_num_symtab));
+
+ mod_name = modbuf + OFFSET(module_name);
+
+ lm = &st->load_modules[m++];
+ BZERO(lm, sizeof(struct load_module));
+
+ size = 0;
+ for_each_mod_mem_type(t) {
+ lm->mem[t].base = ULONG(modbuf + OFFSET(module_mem) +
+ SIZE(module_memory) * t + OFFSET(module_memory_base));
+ lm->mem[t].size = UINT(modbuf + OFFSET(module_mem) +
+ SIZE(module_memory) * t + OFFSET(module_memory_size));
+ if (t < MOD_INIT_TEXT)
+ size += lm->mem[t].size;
+ }
+ lm->mod_base = lm->mem[MOD_TEXT].base;
+ /* module core size, init not included */
+ lm->mod_size = size;
+ lm->module_struct = mod;
+
+ if (strlen(mod_name) < MAX_MOD_NAME)
+ strcpy(lm->mod_name, mod_name);
+ else {
+ error(INFO, "module name greater than MAX_MOD_NAME: %s\n", mod_name);
+ strncpy(lm->mod_name, mod_name, MAX_MOD_NAME-1);
+ }
+ if (CRASHDEBUG(3))
+ fprintf(fp, "%lx (%lx): %s syms: %d gplsyms: %d ksyms: %ld\n",
+ mod, lm->mod_base, lm->mod_name, nsyms, ngplsyms, nksyms);
+
+ lm->mod_flags = MOD_EXT_SYMS;
+ lm->mod_ext_symcnt = mcnt;
+ lm->mod_text_start = lm->mod_base;
+ lm->mod_init_module_ptr = lm->mem[MOD_INIT_TEXT].base;
+ lm->mod_init_size = lm->mem[MOD_INIT_TEXT].size;
+ lm->mod_init_text_size = lm->mem[MOD_INIT_TEXT].size;
+
+ if (VALID_MEMBER(module_percpu))
+ lm->mod_percpu = ULONG(modbuf + OFFSET(module_percpu));
+
+ lm_mcnt = mcnt;
+ for_each_mod_mem_type(t) {
+ if (!lm->mem[t].size)
+ continue;
+
+ st->ext_module_symtable[mcnt].value = lm->mem[t].base;
+ st->ext_module_symtable[mcnt].type = 'm';
+ st->ext_module_symtable[mcnt].flags |= MODULE_SYMBOL;
+ sprintf(buf2, "%s%s", module_tag[t].start, mod_name);
+ namespace_ctl(NAMESPACE_INSTALL, &st->ext_module_namespace,
+ &st->ext_module_symtable[mcnt], buf2);
+ lm_mcnt = mcnt;
+ mcnt++;
+
+ if (t >= MOD_INIT_TEXT)
+ lm->mod_flags |= MOD_INIT;
+ }
+
+ if (nsyms && !IN_MODULE(syms, lm)) {
+ error(WARNING,
+ "[%s] module.syms outside of module " "address space (%lx)\n\n",
+ lm->mod_name, syms);
+ nsyms = 0;
+ }
+
+ if (nsyms) {
+ modsymbuf = GETBUF(kernel_symbol_size*nsyms);
+ readmem((ulong)syms, KVADDR, modsymbuf,
+ nsyms * kernel_symbol_size,
+ "module symbols", FAULT_ON_ERROR);
+ }
+
+ for (i = first = last = 0; i < nsyms; i++) {
+ modsym = (union kernel_symbol *)
+ (modsymbuf + (i * kernel_symbol_size));
+ if (!first
+ || first > modsym_name(syms, modsym, i))
+ first = modsym_name(syms, modsym, i);
+ if (modsym_name(syms, modsym, i) > last)
+ last = modsym_name(syms, modsym, i);
+ }
+
+ if (last > first) {
+ /* The buffer should not go over the block. */
+ ulong end = module_mem_end(first, lm);
+
+ strbuflen = (last-first) + BUFSIZE;
+ if ((first + strbuflen) >= end) {
+ strbuflen = end - first;
+
+ }
+ strbuf = GETBUF(strbuflen);
+
+ if (!readmem(first, KVADDR, strbuf, strbuflen,
+ "module symbol strings", RETURN_ON_ERROR)) {
+ FREEBUF(strbuf);
+ strbuf = NULL;
+ }
+ }
+
+
+ for (i = 0; i < nsyms; i++) {
+ modsym = (union kernel_symbol *)(modsymbuf + (i * kernel_symbol_size));
+
+ BZERO(buf1, BUFSIZE);
+
+ if (strbuf)
+ strcpy(buf1, &strbuf[modsym_name(syms, modsym, i) - first]);
+ else
+ read_string(modsym_name(syms, modsym, i), buf1, BUFSIZE-1);
+
+ if (strlen(buf1)) {
+ st->ext_module_symtable[mcnt].value =
+ modsym_value(syms, modsym, i);
+ st->ext_module_symtable[mcnt].type = '?';
+ st->ext_module_symtable[mcnt].flags |= MODULE_SYMBOL;
+ strip_module_symbol_end(buf1);
+ strip_symbol_end(buf1, NULL);
+ namespace_ctl(NAMESPACE_INSTALL,
+ &st->ext_module_namespace,
+ &st->ext_module_symtable[mcnt], buf1);
+
+ mcnt++;
+ }
+ }
+
+ if (modsymbuf) {
+ FREEBUF(modsymbuf);
+ modsymbuf = NULL;
+ }
+
+ if (strbuf)
+ FREEBUF(strbuf);
+
+ if (ngplsyms) {
+ modsymbuf = GETBUF(kernel_symbol_size * ngplsyms);
+ readmem((ulong)gpl_syms, KVADDR, modsymbuf,
+ ngplsyms * kernel_symbol_size,
+ "module gpl symbols", FAULT_ON_ERROR);
+ }
+
+ for (i = first = last = 0; i < ngplsyms; i++) {
+ modsym = (union kernel_symbol *)
+ (modsymbuf + (i * kernel_symbol_size));
+ if (!first
+ || first > modsym_name(gpl_syms, modsym, i))
+ first = modsym_name(gpl_syms, modsym, i);
+ if (modsym_name(gpl_syms, modsym, i) > last)
+ last = modsym_name(gpl_syms, modsym, i);
+ }
+
+ if (last > first) {
+ ulong end = module_mem_end(first, lm);
+
+ strbuflen = (last-first) + BUFSIZE;
+ if ((first + strbuflen) >= end) {
+ strbuflen = end - first;
+
+ }
+ strbuf = GETBUF(strbuflen);
+
+ if (!readmem(first, KVADDR, strbuf, strbuflen,
+ "module gpl symbol strings", RETURN_ON_ERROR)) {
+ FREEBUF(strbuf);
+ strbuf = NULL;
+ }
+ } else
+ strbuf = NULL;
+
+ for (i = 0; i < ngplsyms; i++) {
+ modsym = (union kernel_symbol *) (modsymbuf + (i * kernel_symbol_size));
+
+ BZERO(buf1, BUFSIZE);
+
+ if (strbuf)
+ strcpy(buf1, &strbuf[modsym_name(gpl_syms, modsym, i) - first]);
+ else
+ read_string(modsym_name(gpl_syms, modsym, i), buf1, BUFSIZE-1);
+
+ if (strlen(buf1)) {
+ st->ext_module_symtable[mcnt].value =
+ modsym_value(gpl_syms, modsym, i);
+ st->ext_module_symtable[mcnt].type = '?';
+ st->ext_module_symtable[mcnt].flags |= MODULE_SYMBOL;
+ strip_module_symbol_end(buf1);
+ strip_symbol_end(buf1, NULL);
+ namespace_ctl(NAMESPACE_INSTALL,
+ &st->ext_module_namespace,
+ &st->ext_module_symtable[mcnt], buf1);
+
+ mcnt++;
+ }
+ }
+
+ if (modsymbuf) {
+ FREEBUF(modsymbuf);
+ modsymbuf = NULL;
+ }
+
+ if (strbuf)
+ FREEBUF(strbuf);
+
+ /*
+ * If the module was compiled with kallsyms, add them in.
+ */
+ switch (kt->flags & (KALLSYMS_V1|KALLSYMS_V2))
+ {
+ case KALLSYMS_V1: /* impossible, I hope... */
+ mcnt += store_module_kallsyms_v1(lm, lm_mcnt, mcnt, modbuf);
+ break;
+ case KALLSYMS_V2:
+ mcnt += store_module_kallsyms_v2(lm, lm_mcnt, mcnt, modbuf);
+ break;
+ }
+
+ for_each_mod_mem_type(t) {
+ if (!lm->mem[t].size)
+ continue;
+
+ st->ext_module_symtable[mcnt].value = lm->mem[t].base + lm->mem[t].size;
+ st->ext_module_symtable[mcnt].type = 'm';
+ st->ext_module_symtable[mcnt].flags |= MODULE_SYMBOL;
+ sprintf(buf2, "%s%s", module_tag[t].end, mod_name);
+ namespace_ctl(NAMESPACE_INSTALL,
+ &st->ext_module_namespace,
+ &st->ext_module_symtable[mcnt], buf2);
+ mcnt++;
+ }
+
+ lm->mod_ext_symcnt = mcnt - lm->mod_ext_symcnt;
+
+ NEXT_MODULE(mod_next, modbuf);
+ }
+
+ FREEBUF(modbuf);
+
+ st->ext_module_symcnt = mcnt;
+ st->ext_module_symend = &st->ext_module_symtable[mcnt];
+
+ namespace_ctl(NAMESPACE_COMPLETE, &st->ext_module_namespace,
+ st->ext_module_symtable, st->ext_module_symend);
+
+ qsort(st->ext_module_symtable, mcnt, sizeof(struct syment),
+ compare_syms);
+
+ /* sort by text base address */
+ qsort(st->load_modules, m, sizeof(struct load_module), compare_mods);
+
+ for (m = 0; m < st->mods_installed; m++) {
+ lm = &st->load_modules[m];
+
+ for_each_mod_mem_type(t) {
+ if (!lm->mem[t].size)
+ continue;
+
+ sprintf(buf1, "%s%s", module_tag[t].start, lm->mod_name);
+ sprintf(buf2, "%s%s", module_tag[t].end, lm->mod_name);
+
+ for (sp = st->ext_module_symtable; sp < st->ext_module_symend; sp++) {
+ if (STREQ(sp->name, buf1)) {
+ lm->ext_symtable[t] = sp;
+ break;
+ }
+ }
+ for ( ; sp < st->ext_module_symend; sp++) {
+ if (STREQ(sp->name, buf2)) {
+ lm->ext_symend[t] = sp;
+ break;
+ }
+ }
+
+ if (lm->ext_symtable[t] && lm->ext_symend[t])
+ mod_symtable_hash_install_range(lm->ext_symtable[t], lm->ext_symend[t]);
+ }
+ lm->symtable = lm->ext_symtable;
+ lm->symend = lm->ext_symend;
+ }
+
+ st->flags |= MODULE_SYMS;
+
+ if (CRASHDEBUG(2)) {
+ for (sp = st->ext_module_symtable; sp < st->ext_module_symend; sp++)
+ fprintf(fp, "%16lx %s\n", sp->value, sp->name);
+ }
+
+ if (mcnt > total)
+ error(FATAL, "store_module_symbols_6_4: total: %ld mcnt: %d\n", total, mcnt);
+}
+
void
store_module_symbols_v2(ulong total, int mods_installed)
{
@@ -2384,6 +2859,7 @@ store_module_kallsyms_v2(struct load_module *lm, int start, int curr,
int mcnt;
int mcnt_idx;
char *module_buf_init = NULL;
+ ulong base, base_init, size, size_init;
if (!(kt->flags & KALLSYMS_V2))
return 0;
@@ -2394,9 +2870,22 @@ store_module_kallsyms_v2(struct load_module *lm, int start, int curr,
ns = &st->ext_module_namespace;
ec = &elf_common;
- module_buf = GETBUF(lm->mod_size);
+ /* kallsyms data looks to be in MOD_DATA region. */
+ if (MODULE_MEMORY()) {
+ base = lm->mem[MOD_DATA].base;
+ size = lm->mem[MOD_DATA].size;
+ base_init = lm->mem[MOD_INIT_DATA].base;
+ size_init = lm->mem[MOD_INIT_DATA].size;
+ } else {
+ base = lm->mod_base;
+ size = lm->mod_size;
+ base_init = lm->mod_init_module_ptr;
+ size_init = lm->mod_init_size;
+ }
- if (!readmem(lm->mod_base, KVADDR, module_buf, lm->mod_size,
+ module_buf = GETBUF(size);
+
+ if (!readmem(base, KVADDR, module_buf, size,
"module (kallsyms)", RETURN_ON_ERROR|QUIET)) {
error(WARNING,"cannot access module kallsyms\n");
FREEBUF(module_buf);
@@ -2404,10 +2893,10 @@ store_module_kallsyms_v2(struct load_module *lm, int start, int curr,
}
if (lm->mod_init_size > 0) {
- module_buf_init = GETBUF(lm->mod_init_size);
+ module_buf_init = GETBUF(size_init);
- if (!readmem(lm->mod_init_module_ptr, KVADDR, module_buf_init, lm->mod_init_size,
- "module init (kallsyms)", RETURN_ON_ERROR|QUIET)) {
+ if (!readmem(base_init, KVADDR, module_buf_init, size_init,
+ "module init (kallsyms)", RETURN_ON_ERROR|QUIET)) {
error(WARNING,"cannot access module init kallsyms\n");
FREEBUF(module_buf_init);
}
@@ -2429,9 +2918,9 @@ store_module_kallsyms_v2(struct load_module *lm, int start, int curr,
return 0;
}
if (IN_MODULE(ksymtab, lm))
- locsymtab = module_buf + (ksymtab - lm->mod_base);
+ locsymtab = module_buf + (ksymtab - base);
else
- locsymtab = module_buf_init + (ksymtab - lm->mod_init_module_ptr);
+ locsymtab = module_buf_init + (ksymtab - base_init);
kstrtab = ULONG(modbuf + OFFSET(module_strtab));
if (!IN_MODULE(kstrtab, lm) && !IN_MODULE_INIT(kstrtab, lm)) {
@@ -2444,9 +2933,9 @@ store_module_kallsyms_v2(struct load_module *lm, int start, int curr,
return 0;
}
if (IN_MODULE(kstrtab, lm))
- locstrtab = module_buf + (kstrtab - lm->mod_base);
+ locstrtab = module_buf + (kstrtab - base);
else
- locstrtab = module_buf_init + (kstrtab - lm->mod_init_module_ptr);
+ locstrtab = module_buf_init + (kstrtab - base_init);
for (i = 1; i < nksyms; i++) { /* ELF starts real symbols at 1 */
switch (BITS())
@@ -2461,11 +2950,8 @@ store_module_kallsyms_v2(struct load_module *lm, int start, int curr,
break;
}
- if (((ec->st_value < lm->mod_base) ||
- (ec->st_value > (lm->mod_base + lm->mod_size))) &&
- ((ec->st_value < lm->mod_init_module_ptr) ||
- (ec->st_value > (lm->mod_init_module_ptr + lm->mod_init_size))))
- continue;
+ if (!IN_MODULE(ec->st_value, lm) && !IN_MODULE_INIT(ec->st_value, lm))
+ continue;
if (ec->st_shndx == SHN_UNDEF)
continue;
@@ -2572,7 +3058,7 @@ strip_module_symbol_end(char *buf)
ulong
lowest_module_address(void)
{
- int i;
+ int i, t;
struct load_module *lm;
ulong low, lowest;
@@ -2582,9 +3068,20 @@ lowest_module_address(void)
lowest = (ulong)(-1);
for (i = 0; i < st->mods_installed; i++) {
lm = &st->load_modules[i];
- low = lm->mod_base;
- if (low < lowest)
- lowest = low;
+ if (MODULE_MEMORY())
+ for_each_mod_mem_type(t) {
+ if (!lm->mem[t].size)
+ continue;
+
+ low = lm->mem[t].base;
+ if (low < lowest)
+ lowest = low;
+ }
+ else {
+ low = lm->mod_base;
+ if (low < lowest)
+ lowest = low;
+ }
}
return lowest;
@@ -2593,16 +3090,27 @@ lowest_module_address(void)
ulong
highest_module_address(void)
{
- int i;
+ int i, t;
struct load_module *lm;
ulong high, highest;
highest = 0;
for (i = 0; i < st->mods_installed; i++) {
lm = &st->load_modules[i];
- high = lm->mod_base + lm->mod_size;
- if (high > highest)
- highest = high;
+ if (MODULE_MEMORY()) {
+ for_each_mod_mem_type(t) {
+ if (!lm->mem[t].size)
+ continue;
+
+ high = lm->mem[t].base + lm->mem[t].size;
+ if (high > highest)
+ highest = high;
+ }
+ } else {
+ high = lm->mod_base + lm->mod_size;
+ if (high > highest)
+ highest = high;
+ }
}
return highest;
@@ -2853,7 +3361,8 @@ compare_syms(const void *v1, const void *v2)
return -1;
if (STRNEQ(s2->name, "__insmod"))
return 1;
- if (STRNEQ(s2->name, "_MODULE_START_"))
+ if (MODULE_MEM_START(s2, MOD_TEXT) ||
+ STRNEQ(s2->name, "_MODULE_START_"))
return 1;
/* Get pseudo section name. */
if (MODULE_SECTION_START(s1))
@@ -2986,13 +3495,19 @@ is_kernel_text(ulong value)
if (!(lm->mod_section_data[s].flags & SEC_CODE))
continue;
- start = lm->mod_base +
- lm->mod_section_data[s].offset;
+ if (MODULE_MEMORY())
+ start = lm->mod_section_data[s].addr;
+ else
+ start = lm->mod_base + lm->mod_section_data[s].offset;
+
end = start + lm->mod_section_data[s].size;
if ((value >= start) && (value < end))
return TRUE;
}
+ } else if (MODULE_MEMORY()) {
+ if (IN_MODULE_TEXT(value, lm))
+ return TRUE;
} else {
switch (kt->flags & (KMOD_V1|KMOD_V2))
{
@@ -3531,22 +4046,42 @@ dump_symbol_table(void)
(ulong)lm->mod_section_data,
lm->mod_section_data ? "" : "(not allocated)");
+ if (MODULE_MEMORY()) {
+ int t;
+ for_each_mod_mem_type(t) {
+ fprintf(fp, " mem[%d]: %lx (%x)\n",
+ t, lm->mem[t].base, lm->mem[t].size);
+ }
+ fprintf(fp, " symtable: %lx\n", (ulong)lm->symtable);
+ fprintf(fp, " ext_symtable: %lx\n", (ulong)lm->ext_symtable);
+ for_each_mod_mem_type(t) {
+ fprintf(fp, " ext_symtable[%d]: %lx - %lx\n",
+ t, (ulong)lm->ext_symtable[t], (ulong)lm->ext_symend[t]);
+ }
+ fprintf(fp, " load_symtable: %lx\n", (ulong)lm->load_symtable);
+ for_each_mod_mem_type(t) {
+ fprintf(fp, " load_symtable[%d]: %lx - %lx\n",
+ t, (ulong)lm->load_symtable[t], (ulong)lm->load_symend[t]);
+ }
+ }
for (s = 0; s < lm->mod_sections; s++) {
fprintf(fp,
- " %12s prio: %x flags: %05x offset: %-8lx size: %lx\n",
+ " %20s prio: %x flags: %08x %s: %-16lx size: %lx\n",
lm->mod_section_data[s].name,
lm->mod_section_data[s].priority,
lm->mod_section_data[s].flags,
- lm->mod_section_data[s].offset,
+ MODULE_MEMORY() ? "addr" : "offset",
+ MODULE_MEMORY() ? lm->mod_section_data[s].addr :
+ lm->mod_section_data[s].offset,
lm->mod_section_data[s].size);
}
fprintf(fp, " loaded_objfile: %lx\n", (ulong)lm->loaded_objfile);
- if (CRASHDEBUG(1)) {
+ if (CRASHDEBUG(1) && lm->mod_load_symtable) {
for (sp = lm->mod_load_symtable;
- sp < lm->mod_load_symend; sp++) {
+ sp <= lm->mod_load_symend; sp++) {
fprintf(fp, " %lx %s\n",
sp->value, sp->name);
}
@@ -4458,8 +4993,11 @@ get_section(ulong vaddr, char *buf)
if (module_symbol(vaddr, NULL, &lm, NULL, *gdb_output_radix)) {
if (lm->mod_flags & MOD_LOAD_SYMS) {
for (i = (lm->mod_sections-1); i >= 0; i--) {
- start = lm->mod_base +
- lm->mod_section_data[i].offset;
+ if (MODULE_MEMORY())
+ start = lm->mod_section_data[i].addr;
+ else
+ start = lm->mod_base +
+ lm->mod_section_data[i].offset;
end = start + lm->mod_section_data[i].size;
if ((vaddr >= start) && (vaddr < end)) {
@@ -4514,7 +5052,7 @@ get_build_directory(char *buf)
int
symbol_query(char *s, char *print_pad, struct syment **spp)
{
- int i;
+ int i, t;
struct syment *sp, *sp_end;
struct load_module *lm;
int cnt, search_init;
@@ -4534,6 +5072,60 @@ symbol_query(char *s, char *print_pad, struct syment **spp)
}
}
+ if (!MODULE_MEMORY())
+ goto old_module;
+
+ for (i = 0; i < st->mods_installed; i++) {
+ lm = &st->load_modules[i];
+
+ if (lm->mod_flags & MOD_LOAD_SYMS) {
+ sp = lm->mod_load_symtable;
+ sp_end = lm->mod_load_symend;
+
+ for (; sp < sp_end; sp++) {
+ if (MODULE_PSEUDO_SYMBOL(sp))
+ continue;
+
+ if (strstr(sp->name, s)) {
+ if (print_pad) {
+ if (strlen(print_pad))
+ fprintf(fp, "%s", print_pad);
+ show_symbol(sp, 0, SHOW_RADIX()|SHOW_MODULE);
+ }
+ if (spp)
+ *spp = sp;
+ cnt++;
+ }
+ }
+ } else {
+ for_each_mod_mem_type(t) {
+ if (!lm->symtable[t])
+ continue;
+
+ sp = lm->symtable[t];
+ sp_end = lm->symend[t];
+
+ for (; sp < sp_end; sp++) {
+ if (MODULE_PSEUDO_SYMBOL(sp))
+ continue;
+
+ if (strstr(sp->name, s)) {
+ if (print_pad) {
+ if (strlen(print_pad))
+ fprintf(fp, "%s", print_pad);
+ show_symbol(sp, 0, SHOW_RADIX()|SHOW_MODULE);
+ }
+ if (spp)
+ *spp = sp;
+ cnt++;
+ }
+ }
+ }
+ }
+ }
+ return cnt;
+
+old_module:
search_init = FALSE;
for (i = 0; i < st->mods_installed; i++) {
@@ -4639,7 +5231,7 @@ symbol_search(char *s)
int
symbol_name_count(char *s)
{
- int i;
+ int i, t;
struct syment *sp, *sp_end;
struct load_module *lm;
int count, pseudos, search_init;
@@ -4653,6 +5245,37 @@ symbol_name_count(char *s)
}
}
+ if (!MODULE_MEMORY())
+ goto old_module;
+
+ for (i = 0; i < st->mods_installed; i++) {
+ lm = &st->load_modules[i];
+
+ if (lm->mod_flags & MOD_LOAD_SYMS) {
+ sp = lm->mod_load_symtable;
+ sp_end = lm->mod_load_symend;
+
+ for (; sp < sp_end; sp++) {
+ if (STREQ(s, sp->name))
+ count++;
+ }
+ } else {
+ for_each_mod_mem_type(t) {
+ if (!lm->symtable[t])
+ continue;
+
+ sp = lm->symtable[t];
+ sp_end = lm->symend[t];
+ for (; sp < sp_end; sp++) {
+ if (STREQ(s, sp->name))
+ count++;
+ }
+ }
+ }
+ }
+ return count++;
+
+old_module:
pseudos = (strstr(s, "_MODULE_START_") || strstr(s, "_MODULE_END_"));
search_init = FALSE;
@@ -4702,7 +5325,7 @@ symbol_name_count(char *s)
struct syment *
symbol_search_next(char *s, struct syment *spstart)
{
- int i;
+ int i, t;
struct syment *sp, *sp_end;
struct load_module *lm;
int found_start;
@@ -4722,6 +5345,38 @@ symbol_search_next(char *s, struct syment *spstart)
}
}
+ if (!MODULE_MEMORY())
+ goto old_module;
+
+ for (i = 0; i < st->mods_installed; i++) {
+ lm = &st->load_modules[i];
+
+ for_each_mod_mem_type(t) {
+ if (!lm->symtable[t])
+ continue;
+
+ sp = lm->symtable[t];
+ sp_end = lm->symend[t];
+
+ if (!found_start && (spstart < sp || spstart > sp_end))
+ continue;
+
+ for ( ; sp < sp_end; sp++) {
+ if (sp == spstart) {
+ found_start = TRUE;
+ continue;
+ } else if (!found_start)
+ continue;
+
+ if (STREQ(s, sp->name))
+ return sp;
+ }
+ }
+ }
+
+ return NULL;
+
+old_module:
pseudos = (strstr(s, "_MODULE_START_") || strstr(s, "_MODULE_END_"));
search_init = FALSE;
@@ -4831,17 +5486,29 @@ module_symbol(ulong value,
for (i = 0; i < st->mods_installed; i++) {
lm = &st->load_modules[i];
- if (IN_MODULE(value, lm)) {
- base = lm->mod_base;
- end = lm->mod_base + lm->mod_size;
- } else if (IN_MODULE_INIT(value, lm)) {
- base = lm->mod_init_module_ptr;
- end = lm->mod_init_module_ptr + lm->mod_init_size;
- } else if (IN_MODULE_PERCPU(value, lm)) {
- base = lm->mod_percpu;
- end = lm->mod_percpu + lm->mod_percpu_size;
- } else
- continue;
+ if (MODULE_MEMORY()) {
+ if (IN_MODULE(value, lm) || IN_MODULE_INIT(value, lm)) {
+ int type = module_mem_type(value, lm);
+ base = lm->mem[type].base;
+ end = base + lm->mem[type].size;
+ } else if (IN_MODULE_PERCPU(value, lm)) {
+ base = lm->mod_percpu;
+ end = lm->mod_percpu + lm->mod_percpu_size;
+ } else
+ continue;
+ } else {
+ if (IN_MODULE(value, lm)) {
+ base = lm->mod_base;
+ end = lm->mod_base + lm->mod_size;
+ } else if (IN_MODULE_INIT(value, lm)) {
+ base = lm->mod_init_module_ptr;
+ end = lm->mod_init_module_ptr + lm->mod_init_size;
+ } else if (IN_MODULE_PERCPU(value, lm)) {
+ base = lm->mod_percpu;
+ end = lm->mod_percpu + lm->mod_percpu_size;
+ } else
+ continue;
+ }
if ((value >= base) && (value < end)) {
if (lmp)
@@ -4877,6 +5544,71 @@ module_symbol(ulong value,
return FALSE;
}
+static struct syment *
+value_search_module_6_4(ulong value, ulong *offset)
+{
+ int i, t;
+ struct syment *sp, *sp_end, *spnext, *splast;
+ struct load_module *lm;
+
+ for (i = 0; i < st->mods_installed; i++) {
+ lm = &st->load_modules[i];
+
+ if (!IN_MODULE(value, lm) && !IN_MODULE_INIT(value, lm))
+ continue;
+
+ for_each_mod_mem_type(t) {
+ sp = lm->symtable[t];
+ sp_end = lm->symend[t];
+
+ if (value < sp->value)
+ continue;
+
+ splast = NULL;
+ for ( ; sp <= sp_end; sp++) {
+ if (machine_type("ARM64") &&
+ IN_MODULE_PERCPU(sp->value, lm) &&
+ !IN_MODULE_PERCPU(value, lm))
+ continue;
+
+ if (value == sp->value) {
+ if (MODULE_MEM_END(sp, t))
+ break;
+
+ if (MODULE_PSEUDO_SYMBOL(sp)) {
+ spnext = sp + 1;
+ if (MODULE_PSEUDO_SYMBOL(spnext))
+ continue;
+ if (spnext->value == value)
+ sp = spnext;
+ }
+ if (sp->name[0] == '.') {
+ spnext = sp+1;
+ if (spnext->value == value)
+ sp = spnext;
+ }
+ if (offset)
+ *offset = 0;
+ return sp;
+ }
+
+ if (sp->value > value) {
+ sp = splast ? splast : sp - 1;
+ if (offset)
+ *offset = value - sp->value;
+ return sp;
+ }
+
+ if (!MODULE_PSEUDO_SYMBOL(sp)) {
+ splast = sp;
+ }
+ }
+ }
+ }
+
+ return NULL;
+}
+
struct syment *
value_search_module(ulong value, ulong *offset)
{
@@ -4885,6 +5617,9 @@ value_search_module(ulong value, ulong *offset)
struct load_module *lm;
int search_init_sections, search_init;
+ if (MODULE_MEMORY())
+ return value_search_module_6_4(value, offset);
+
search_init = FALSE;
search_init_sections = 0;
@@ -5203,6 +5938,99 @@ closest_symbol_value(ulong value)
return(0);
}
+/* Only for 6.4 and later */
+static struct syment *
+next_symbol_by_symname(char *symbol)
+{
+ struct syment *sp;
+
+ if ((sp = symbol_search(symbol))) {
+ sp++;
+ if (MODULE_PSEUDO_SYMBOL(sp) && strstr(sp->name, "_END"))
+ return next_module_symbol_by_value(sp->value);
+
+ return sp;
+ }
+
+ return NULL;
+}
+
+/* val_in should be a pseudo module end symbol. */
+static struct syment *
+next_module_symbol_by_value(ulong val_in)
+{
+ struct load_module *lm;
+ struct syment *sp, *sp_end;
+ ulong start, min;
+ int i, t;
+
+retry:
+ sp = sp_end = NULL;
+ min = (ulong)-1;
+ for (i = 0; i < st->mods_installed; i++) {
+ lm = &st->load_modules[i];
+
+ /* Search for the next lowest symtable. */
+ for_each_mod_mem_type(t) {
+ if (!lm->symtable[t])
+ continue;
+
+ start = lm->symtable[t]->value;
+ if (start > val_in && start < min) {
+ min = start;
+ sp = lm->symtable[t];
+ sp_end = lm->symend[t];
+ }
+ }
+ }
+
+ if (!sp)
+ return NULL;
+
+ for ( ; sp < sp_end; sp++) {
+ if (MODULE_PSEUDO_SYMBOL(sp))
+ continue;
+ if (sp->value > val_in)
+ return sp;
+ }
+
+ /* Found a table that has only pseudo symbols. */
+ val_in = sp_end->value;
+ goto retry;
+}
+
+/* Only for 6.4 and later */
+static struct syment *
+next_module_symbol_by_syment(struct syment *sp_in)
+{
+ struct load_module *lm;
+ struct syment *sp;
+ int i, t;
+
+ for (i = 0; i < st->mods_installed; i++) {
+ lm = &st->load_modules[i];
+
+ for_each_mod_mem_type(t) {
+ if (!lm->symtable[t])
+ continue;
+
+ if (sp_in < lm->symtable[t] || sp_in > lm->symend[t])
+ continue;
+
+ if (sp_in == lm->symend[t])
+ return next_module_symbol_by_value(sp_in->value);
+
+ sp = sp_in + 1;
+ if (MODULE_PSEUDO_SYMBOL(sp))
+ return next_module_symbol_by_value(sp->value);
+
+ return sp;
+ }
+ }
+
+ return NULL;
+}
+
/*
* For a given symbol, return a pointer to the next (higher) symbol's syment.
* Either a symbol name or syment pointer may be passed as an argument.
@@ -5230,6 +6058,9 @@ next_symbol(char *symbol, struct syment *sp_in)
}
}
+ if (MODULE_MEMORY())
+ return next_module_symbol_by_syment(sp_in);
+
search_init = FALSE;
for (i = 0; i < st->mods_installed; i++) {
@@ -5270,46 +6101,148 @@ next_symbol(char *symbol, struct syment *sp_in)
}
}
- return NULL;
+ return NULL;
+ }
+
+ if (MODULE_MEMORY())
+ return next_symbol_by_symname(symbol);
+
+ /*
+ * Deal with a few special cases...
+ */
+ if (strstr(symbol, " module)")) {
+ sprintf(buf, "_MODULE_START_");
+ strcat(buf, &symbol[1]);
+ p1 = strstr(buf, " module)");
+ *p1 = NULLCHAR;
+ symbol = buf;
+ }
+
+ if (STREQ(symbol, "_end")) {
+ if (!st->mods_installed)
+ return NULL;
+
+ lm = &st->load_modules[0];
+
+ return lm->mod_symtable;
+ }
+
+ if ((sp = symbol_search(symbol))) {
+ sp++;
+ if (MODULE_END(sp)) {
+ sp--;
+ i = load_module_index(sp);
+ if ((i+1) == st->mods_installed)
+ return NULL;
+
+ lm = &st->load_modules[i+1];
+
+ sp = lm->mod_symtable;
+ }
+ return sp;
+ }
+
+ return NULL;
+}
+
+/* Only for 6.4 and later */
+static struct syment *
+prev_symbol_by_symname(char *symbol)
+{
+ struct syment *sp;
+
+ if ((sp = symbol_search(symbol))) {
+ if (sp == st->symtable)
+ return NULL;
+
+ if (module_symbol(sp->value, NULL, NULL, NULL, 0)) {
+ if (MODULE_PSEUDO_SYMBOL(sp) && strstr(sp->name, "_START"))
+ return prev_module_symbol_by_value(sp->value);
+ else
+ sp--;
+ } else
+ sp--;
+
+ return sp;
+ }
+
+ return NULL;
+}
+
+/* val_in should be a pseudo module start symbol. */
+static struct syment *
+prev_module_symbol_by_value(ulong val_in)
+{
+ struct load_module *lm;
+ struct syment *sp, *sp_end;
+ ulong end, max;
+ int i, t;
+
+retry:
+ sp = sp_end = NULL;
+ max = 0;
+ for (i = 0; i < st->mods_installed; i++) {
+ lm = &st->load_modules[i];
+
+ /* Search for the previous highest table. */
+ for_each_mod_mem_type(t) {
+ if (!lm->symtable[t])
+ continue;
+
+ end = lm->symend[t]->value;
+ if (end < val_in && end > max) {
+ max = end;
+ sp = lm->symtable[t];
+ sp_end = lm->symend[t];
+ }
+ }
}
+ if (!sp)
+ return NULL;
- /*
- * Deal with a few special cases...
- */
- if (strstr(symbol, " module)")) {
- sprintf(buf, "_MODULE_START_");
- strcat(buf, &symbol[1]);
- p1 = strstr(buf, " module)");
- *p1 = NULLCHAR;
- symbol = buf;
+ for ( ; sp_end > sp; sp_end--) {
+ if (MODULE_PSEUDO_SYMBOL(sp_end))
+ continue;
+ if (sp_end->value < val_in)
+ return sp_end;
}
- if (STREQ(symbol, "_end")) {
- if (!st->mods_installed)
- return NULL;
+ /* Found a table that has only pseudo symbols. */
+ val_in = sp->value;
+ goto retry;
+}
- lm = &st->load_modules[0];
+/* Only for 6.4 and later */
+static struct syment *
+prev_module_symbol_by_syment(struct syment *sp_in)
+{
+ struct load_module *lm;
+ struct syment *sp;
+ int i, t;
- return lm->mod_symtable;
- }
+ for (i = 0; i < st->mods_installed; i++) {
+ lm = &st->load_modules[i];
- if ((sp = symbol_search(symbol))) {
- sp++;
- if (MODULE_END(sp)) {
- sp--;
- i = load_module_index(sp);
- if ((i+1) == st->mods_installed)
- return NULL;
+ for_each_mod_mem_type(t) {
+ if (!lm->symtable[t])
+ continue;
- lm = &st->load_modules[i+1];
+ if (sp_in < lm->symtable[t] || sp_in > lm->symend[t])
+ continue;
- sp = lm->mod_symtable;
+ if (sp_in == lm->symtable[t])
+ return prev_module_symbol_by_value(sp_in->value);
+
+ sp = sp_in - 1;
+ if (MODULE_PSEUDO_SYMBOL(sp))
+ return prev_module_symbol_by_value(sp->value);
+
+ return sp;
}
- return sp;
}
- return NULL;
+ return NULL;
}
/*
@@ -5335,6 +6268,9 @@ prev_symbol(char *symbol, struct syment *sp_in)
sp_prev = sp;
}
+ if (MODULE_MEMORY())
+ return prev_module_symbol_by_syment(sp_in);
+
search_init = FALSE;
for (i = 0; i < st->mods_installed; i++) {
@@ -5378,6 +6314,9 @@ prev_symbol(char *symbol, struct syment *sp_in)
return NULL;
}
+ if (MODULE_MEMORY())
+ return prev_symbol_by_symname(symbol);
+
if (strstr(symbol, " module)")) {
sprintf(buf, "_MODULE_START_");
strcat(buf, &symbol[1]);
@@ -5600,7 +6539,7 @@ kernel_symbol_search(char *symbol)
int
get_syment_array(char *symbol, struct syment **sp_array, int max)
{
- int i, cnt;
+ int i, cnt, t;
struct syment *sp, *sp_end;
struct load_module *lm;
@@ -5625,6 +6564,31 @@ get_syment_array(char *symbol, struct syment **sp_array, int max)
}
}
+ if (!MODULE_MEMORY())
+ goto old_module;
+
+ for (i = 0; i < st->mods_installed; i++) {
+ lm = &st->load_modules[i];
+
+ for_each_mod_mem_type(t) {
+ if (!lm->symtable[t])
+ continue;
+
+ sp = lm->symtable[t];
+ sp_end = lm->symend[t];
+ for (; sp < sp_end; sp++) {
+ if (STREQ(symbol, sp->name)) {
+ if (max && (cnt < max))
+ sp_array[cnt] = sp;
+ cnt++;
+ }
+ }
+ }
+ }
+
+ return cnt;
+
+old_module:
for (i = 0; i < st->mods_installed; i++) {
lm = &st->load_modules[i];
sp = lm->mod_symtable;
@@ -9229,6 +10193,9 @@ dump_offset_table(char *spec, ulong makestruct)
OFFSET(module_strtab));
fprintf(fp, " module_percpu: %ld\n",
OFFSET(module_percpu));
+ fprintf(fp, " module_mem: %ld\n", OFFSET(module_mem));
+ fprintf(fp, " module_memory_base: %ld\n", OFFSET(module_memory_base));
+ fprintf(fp, " module_memory_size: %ld\n", OFFSET(module_memory_size));
fprintf(fp, " module_sect_attrs: %ld\n",
OFFSET(module_sect_attrs));
@@ -10852,6 +11819,7 @@ dump_offset_table(char *spec, ulong makestruct)
SIZE(super_block));
fprintf(fp, " irqdesc: %ld\n", SIZE(irqdesc));
fprintf(fp, " module: %ld\n", SIZE(module));
+ fprintf(fp, " module_memory: %ld\n", SIZE(module_memory));
fprintf(fp, " module_sect_attr: %ld\n", SIZE(module_sect_attr));
fprintf(fp, " list_head: %ld\n", SIZE(list_head));
fprintf(fp, " hlist_head: %ld\n", SIZE(hlist_head));
@@ -11467,6 +12435,13 @@ store_section_data(struct load_module *lm, bfd *bfd, asection *section)
lm->mod_section_data[i].section = section;
lm->mod_section_data[i].priority = prio;
lm->mod_section_data[i].flags = section->flags & ~SEC_FOUND;
+ lm->mod_section_data[i].size = bfd_section_size(section);
+ lm->mod_section_data[i].offset = 0;
+ lm->mod_section_data[i].addr = 0;
+ if (strlen(name) < MAX_MOD_SEC_NAME)
+ strcpy(lm->mod_section_data[i].name, name);
+ else
+ strncpy(lm->mod_section_data[i].name, name, MAX_MOD_SEC_NAME-1);
/*
* The percpu section isn't included in kallsyms or module_core area.
*/
@@ -11474,13 +12449,8 @@ store_section_data(struct load_module *lm, bfd *bfd, asection *section)
(STREQ(name,".data.percpu") || STREQ(name, ".data..percpu"))) {
lm->mod_percpu_size = bfd_section_size(section);
lm->mod_section_data[i].flags |= SEC_FOUND;
+ lm->mod_section_data[i].addr = lm->mod_percpu;
}
- lm->mod_section_data[i].size = bfd_section_size(section);
- lm->mod_section_data[i].offset = 0;
- if (strlen(name) < MAX_MOD_SEC_NAME)
- strcpy(lm->mod_section_data[i].name, name);
- else
- strncpy(lm->mod_section_data[i].name, name, MAX_MOD_SEC_NAME-1);
lm->mod_sections += 1;
}
@@ -11722,6 +12692,124 @@ calculate_load_order_v2(struct load_module *lm, bfd *bfd, int dynamic,
}
}
+/* Linux 6.4 and later */
+static void
+calculate_load_order_6_4(struct load_module *lm, bfd *bfd, int dynamic,
+ void *minisyms, long symcount, unsigned int size)
+{
+ struct syment *s1, *s2;
+ ulong sec_start;
+ bfd_byte *from, *fromend;
+ asymbol *store;
+ asymbol *sym;
+ symbol_info syminfo;
+ char *secname;
+ int i, t;
+
+ if ((store = bfd_make_empty_symbol(bfd)) == NULL)
+ error(FATAL, "bfd_make_empty_symbol() failed\n");
+
+ for_each_mod_mem_type(t) {
+ s1 = lm->symtable[t];
+ s2 = lm->symend[t];
+ while (s1 < s2) {
+
+ if (MODULE_PSEUDO_SYMBOL(s1)) {
+ s1++;
+ continue;
+ }
+
+ /* Skip over symbols whose sections have been identified. */
+ for (i = 0; i < lm->mod_sections; i++) {
+ if ((lm->mod_section_data[i].flags & SEC_FOUND) == 0)
+ continue;
+
+ if (s1->value >= lm->mod_section_data[i].addr &&
+ s1->value < lm->mod_section_data[i].addr
+ + lm->mod_section_data[i].size)
+ break;
+ }
+
+ /* Matched one of the sections. Skip symbol. */
+ if (i < lm->mod_sections) {
+ if (CRASHDEBUG(2))
+ fprintf(fp, "skip %lx %s %s\n", s1->value, s1->name,
+ lm->mod_section_data[i].name);
+ s1++;
+ continue;
+ }
+
+ /* Find the symbol in the object file. */
+ from = (bfd_byte *) minisyms;
+ fromend = from + symcount * size;
+ secname = NULL;
+ for (; from < fromend; from += size) {
+ if (!(sym = bfd_minisymbol_to_symbol(bfd, dynamic, from, store)))
+ error(FATAL, "bfd_minisymbol_to_symbol() failed\n");
+
+ bfd_get_symbol_info(bfd, sym, &syminfo);
+ if (CRASHDEBUG(3)) {
+ fprintf(fp,"matching sym %s %lx against bfd %s %lx\n",
+ s1->name, (long) s1->value, syminfo.name,
+ (long) syminfo.value);
+ }
+ if (strcmp(syminfo.name, s1->name) == 0) {
+ secname = (char *)bfd_section_name(sym->section);
+ break;
+ }
+
+ }
+ if (secname == NULL) {
+ if (CRASHDEBUG(1))
+ fprintf(fp, "symbol %s not found in module\n", s1->name);
+ s1++;
+ continue;
+ }
+
+ /* Match the section it came in. */
+ for (i = 0; i < lm->mod_sections; i++) {
+ if (STREQ(lm->mod_section_data[i].name, secname))
+ break;
+ }
+
+ if (i == lm->mod_sections) {
+ fprintf(fp, "?? Section %s not found for symbol %s\n",
+ secname, s1->name);
+ s1++;
+ continue;
+ }
+
+ if (lm->mod_section_data[i].flags & SEC_FOUND) {
+ s1++;
+ continue;
+ }
+
+ /* Update the offset information for the section */
+ sec_start = s1->value - syminfo.value;
+ /* keep the address instead of offset */
+ lm->mod_section_data[i].addr = sec_start;
+ lm->mod_section_data[i].flags |= SEC_FOUND;
+
+ if (CRASHDEBUG(2))
+ fprintf(fp, "update sec offset sym %s @ %lx val %lx section %s\n",
+ s1->name, s1->value, (ulong)syminfo.value, secname);
+
+ if (strcmp(secname, ".text") == 0)
+ lm->mod_text_start = sec_start;
+
+ if (strcmp(secname, ".bss") == 0)
+ lm->mod_bss_start = sec_start;
+
+ if (strcmp(secname, ".data") == 0)
+ lm->mod_data_start = sec_start;
+
+ if (strcmp(secname, ".rodata") == 0)
+ lm->mod_rodata_start = sec_start;
+ s1++;
+ }
+ }
+}
+
/*
* Later versons of insmod store basic address information of each
* module in a format that looks like the following example of the
@@ -11927,8 +13015,11 @@ add_symbol_file(struct load_module *lm)
(!STREQ(secname, ".text") &&
!STREQ(secname, ".data.percpu") &&
!STREQ(secname, ".data..percpu"))) {
- sprintf(buf, " -s %s 0x%lx", secname,
- lm->mod_section_data[i].offset + lm->mod_base);
+ if (MODULE_MEMORY())
+ sprintf(buf, " -s %s 0x%lx", secname, lm->mod_section_data[i].addr);
+ else
+ sprintf(buf, " -s %s 0x%lx", secname,
+ lm->mod_section_data[i].offset + lm->mod_base);
len += strlen(buf);
}
}
@@ -12269,24 +13360,43 @@ static struct syment *
kallsyms_module_symbol(struct load_module *lm, symbol_info *syminfo)
{
struct syment *sp, *spx;
- int cnt;
+ int cnt, t;
if (!(lm->mod_flags & MOD_KALLSYMS))
return NULL;
sp = NULL;
cnt = 0;
- for (spx = lm->mod_ext_symtable; spx <= lm->mod_ext_symend; spx++) {
- if (!STREQ(spx->name, syminfo->name))
- continue;
- if (spx->cnt) {
- cnt++;
- continue;
- }
+ if (MODULE_MEMORY()) {
+ for_each_mod_mem_type(t) {
+ if (!lm->ext_symtable[t])
+ continue;
+ for (spx = lm->ext_symtable[t]; spx <= lm->ext_symend[t]; spx++) {
+ if (!STREQ(spx->name, syminfo->name))
+ continue;
+ if (spx->cnt) {
+ cnt++;
+ continue;
+ }
- spx->cnt++;
- sp = spx;
- break;
+ spx->cnt++;
+ sp = spx;
+ break;
+ }
+ }
+ } else {
+ for (spx = lm->mod_ext_symtable; spx <= lm->mod_ext_symend; spx++) {
+ if (!STREQ(spx->name, syminfo->name))
+ continue;
+ if (spx->cnt) {
+ cnt++;
+ continue;
+ }
+
+ spx->cnt++;
+ sp = spx;
+ break;
+ }
}
if (CRASHDEBUG(2)) {
@@ -12312,7 +13422,7 @@ static void
store_load_module_symbols(bfd *bfd, int dynamic, void *minisyms,
long symcount, unsigned int size, ulong base_addr, char *namelist)
{
- int i;
+ int i, t;
asymbol *store;
asymbol *sym;
bfd_byte *from, *fromend;
@@ -12323,7 +13433,7 @@ store_load_module_symbols(bfd *bfd, int dynamic, void *minisyms,
char *nameptr, *secname;
long index;
long symalloc;
- int found;
+ int found = FALSE;
if ((store = bfd_make_empty_symbol(bfd)) == NULL)
error(FATAL, "bfd_make_empty_symbol() failed\n");
@@ -12380,8 +13490,17 @@ store_load_module_symbols(bfd *bfd, int dynamic, void *minisyms,
lm->mod_rodata_start = lm->mod_bss_start = 0;
lm->mod_load_symcnt = 0;
lm->mod_sections = 0;
- for (spx = lm->mod_ext_symtable; spx <= lm->mod_ext_symend; spx++)
- spx->cnt = 0;
+ if (MODULE_MEMORY()) {
+ for_each_mod_mem_type(t) {
+ if (!lm->ext_symtable[t])
+ continue;
+ for (spx = lm->ext_symtable[t]; spx <= lm->ext_symend[t]; spx++)
+ spx->cnt = 0;
+ }
+ } else {
+ for (spx = lm->mod_ext_symtable; spx <= lm->mod_ext_symend; spx++)
+ spx->cnt = 0;
+ }
sp = lm->mod_load_symtable;
if (!(lm->mod_section_data = (struct mod_section_data *)
@@ -12392,13 +13511,14 @@ store_load_module_symbols(bfd *bfd, int dynamic, void *minisyms,
bfd_map_over_sections(bfd, section_header_info, MODULE_SECTIONS);
- if (kt->flags & KMOD_V1)
+ if (MODULE_MEMORY())
+ calculate_load_order_6_4(lm, bfd, dynamic, minisyms, symcount, size);
+ else if (kt->flags & KMOD_V1)
calculate_load_order_v1(lm, bfd);
else
calculate_load_order_v2(lm, bfd, dynamic, minisyms,
symcount, size);
-
from = (bfd_byte *) minisyms;
fromend = from + symcount * size;
for (; from < fromend; from += size)
@@ -12501,7 +13621,10 @@ store_load_module_symbols(bfd *bfd, int dynamic, void *minisyms,
syminfo.value += lm->mod_percpu;
found = TRUE;
} else {
- syminfo.value += lm->mod_section_data[i].offset + lm->mod_base;
+ if (MODULE_MEMORY())
+ syminfo.value += lm->mod_section_data[i].addr;
+ else
+ syminfo.value += lm->mod_section_data[i].offset + lm->mod_base;
found = TRUE;
}
}
@@ -12536,6 +13659,53 @@ store_load_module_symbols(bfd *bfd, int dynamic, void *minisyms,
* syminfo data types accepted above, plus the two pseudo symbols.
* Note that the new syment name pointers haven't been resolved yet.
*/
+ if (!MODULE_MEMORY())
+ goto old_module;
+
+ for_each_mod_mem_type(t) {
+ if (!lm->ext_symtable[t])
+ continue;
+ for (spx = lm->ext_symtable[t]; spx <= lm->ext_symend[t]; spx++) {
+ found = FALSE;
+ for (sp = lm->mod_load_symtable; sp < lm->mod_load_symend; sp++) {
+ index = (long)sp->name;
+ nameptr = &lm->mod_load_namespace.address[index];
+ if (STREQ(spx->name, nameptr)) {
+ found = TRUE;
+ if (spx->value == sp->value) {
+ if (CRASHDEBUG(2))
+ fprintf(fp, "%s: %s matches!\n",
+ lm->mod_name, nameptr);
+ } else {
+ if (CRASHDEBUG(2))
+ fprintf(fp,
+ "[%s] %s: %lx != extern'd value: %lx\n",
+ lm->mod_name,
+ nameptr, sp->value,
+ spx->value);
+ }
+ break;
+ }
+ }
+ if (!found) {
+ if (CRASHDEBUG(2))
+ fprintf(fp, "append ext %s (%lx)\n", spx->name, spx->value);
+ /* append it here... */
+ namespace_ctl(NAMESPACE_INSTALL,
+ &lm->mod_load_namespace,
+ lm->mod_load_symend, spx->name);
+
+ lm->mod_load_symend->value = spx->value;
+ lm->mod_load_symend->type = spx->type;
+ lm->mod_load_symend->flags |= MODULE_SYMBOL;
+ lm->mod_load_symend++;
+ lm->mod_load_symcnt++;
+ }
+ }
+ }
+ goto append_section_symbols;
+
+old_module:
for (spx = lm->mod_ext_symtable; spx <= lm->mod_ext_symend; spx++) {
found = FALSE;
for (sp = lm->mod_load_symtable;
@@ -12578,6 +13748,7 @@ store_load_module_symbols(bfd *bfd, int dynamic, void *minisyms,
}
}
+append_section_symbols:
/*
* Append helpful pseudo symbols about found out sections.
* Use 'S' as its type which is never seen in existing symbols.
@@ -12587,8 +13758,11 @@ store_load_module_symbols(bfd *bfd, int dynamic, void *minisyms,
if (!(lm->mod_section_data[i].flags & SEC_FOUND))
continue;
/* Section start */
- lm->mod_load_symend->value = lm->mod_base +
- lm->mod_section_data[i].offset;
+ if (MODULE_MEMORY())
+ lm->mod_load_symend->value = lm->mod_section_data[i].addr;
+ else
+ lm->mod_load_symend->value = lm->mod_base +
+ lm->mod_section_data[i].offset;
lm->mod_load_symend->type = 'S';
lm->mod_load_symend->flags |= MODULE_SYMBOL;
sprintf(name, "_MODULE_SECTION_START [%s]",
@@ -12599,9 +13773,12 @@ store_load_module_symbols(bfd *bfd, int dynamic, void *minisyms,
lm->mod_load_symcnt++;
/* Section end */
- lm->mod_load_symend->value = lm->mod_base +
- lm->mod_section_data[i].offset +
- lm->mod_section_data[i].size;
+ if (MODULE_MEMORY())
+ lm->mod_load_symend->value = lm->mod_section_data[i].addr;
+ else
+ lm->mod_load_symend->value = lm->mod_base +
+ lm->mod_section_data[i].offset;
+ lm->mod_load_symend->value += lm->mod_section_data[i].size;
lm->mod_load_symend->type = 'S';
lm->mod_load_symend->flags |= MODULE_SYMBOL;
sprintf(name, "_MODULE_SECTION_END [%s]",
@@ -12618,16 +13795,57 @@ store_load_module_symbols(bfd *bfd, int dynamic, void *minisyms,
qsort(lm->mod_load_symtable, lm->mod_load_symcnt, sizeof(struct syment),
compare_syms);
+ if (MODULE_MEMORY()) {
+ /* keep load symtable addresses to lm->load_symtable[] */
+ /* TODO: make more efficient */
+ for (sp = lm->mod_load_symtable; sp < lm->mod_load_symend; sp++) {
+ char buf1[BUFSIZE], buf2[BUFSIZE];
+
+ if (CRASHDEBUG(2))
+ fprintf(fp, "DEBUG: value %16lx name %s\n", sp->value, sp->name);
+
+ if (!MODULE_PSEUDO_SYMBOL(sp))
+ continue;
+
+ for_each_mod_mem_type(t) {
+ if (!lm->mem[t].size)
+ continue;
+
+ sprintf(buf1, "%s%s", module_tag[t].start, lm->mod_name);
+ sprintf(buf2, "%s%s", module_tag[t].end, lm->mod_name);
+
+ if (STREQ(sp->name, buf1)) {
+ lm->load_symtable[t] = sp;
+ break;
+ } else if (STREQ(sp->name, buf2)) {
+ lm->load_symend[t] = sp;
+ break;
+ }
+ }
+ }
+ }
+
lm->mod_load_symend--;
- if (!MODULE_END(lm->mod_load_symend) &&
+ if (!MODULE_MEMORY() && !MODULE_END(lm->mod_load_symend) &&
!IN_MODULE_PERCPU(lm->mod_load_symend->value, lm))
error(INFO, "%s: last symbol: %s is not _MODULE_END_%s?\n",
lm->mod_name, lm->mod_load_symend->name, lm->mod_name);
- mod_symtable_hash_remove_range(lm->mod_symtable, lm->mod_symend);
- lm->mod_symtable = lm->mod_load_symtable;
- lm->mod_symend = lm->mod_load_symend;
- mod_symtable_hash_install_range(lm->mod_symtable, lm->mod_symend);
+ if (MODULE_MEMORY()) {
+ for_each_mod_mem_type(t) {
+ if (!lm->symtable[t])
+ continue;
+ mod_symtable_hash_remove_range(lm->symtable[t], lm->symend[t]);
+ }
+ lm->symtable = lm->load_symtable;
+ lm->symend = lm->load_symend;
+ mod_symtable_hash_install_range(lm->mod_load_symtable, lm->mod_load_symend);
+ } else {
+ mod_symtable_hash_remove_range(lm->mod_symtable, lm->mod_symend);
+ lm->mod_symtable = lm->mod_load_symtable;
+ lm->mod_symend = lm->mod_load_symend;
+ mod_symtable_hash_install_range(lm->mod_symtable, lm->mod_symend);
+ }
lm->mod_flags &= ~MOD_EXT_SYMS;
lm->mod_flags |= MOD_LOAD_SYMS;
@@ -12642,7 +13860,7 @@ store_load_module_symbols(bfd *bfd, int dynamic, void *minisyms,
void
delete_load_module(ulong base_addr)
{
- int i;
+ int i, t;
struct load_module *lm;
struct gnu_request request, *req;
@@ -12657,7 +13875,18 @@ delete_load_module(ulong base_addr)
req->name = lm->mod_namelist;
gdb_interface(req);
}
- mod_symtable_hash_remove_range(lm->mod_symtable, lm->mod_symend);
+ if (MODULE_MEMORY()) {
+ if (lm->mod_load_symtable) {
+ mod_symtable_hash_remove_range(lm->mod_load_symtable,
+ lm->mod_load_symend);
+ for_each_mod_mem_type(t) {
+ lm->load_symtable[t] = NULL;
+ lm->load_symend[t] = NULL;
+ }
+ }
+ } else
+ mod_symtable_hash_remove_range(lm->mod_symtable, lm->mod_symend);
+
if (lm->mod_load_symtable) {
free(lm->mod_load_symtable);
namespace_ctl(NAMESPACE_FREE,
@@ -12665,9 +13894,23 @@ delete_load_module(ulong base_addr)
}
if (lm->mod_flags & MOD_REMOTE)
unlink_module(lm);
- lm->mod_symtable = lm->mod_ext_symtable;
- lm->mod_symend = lm->mod_ext_symend;
- mod_symtable_hash_install_range(lm->mod_symtable, lm->mod_symend);
+
+ if (MODULE_MEMORY()) {
+ if (lm->mod_load_symtable) { /* still non-NULL */
+ lm->symtable = lm->ext_symtable;
+ lm->symend = lm->ext_symend;
+ for_each_mod_mem_type(t) {
+ if (!lm->symtable[t])
+ continue;
+ mod_symtable_hash_install_range(lm->symtable[t],
+ lm->symend[t]);
+ }
+ }
+ } else {
+ lm->mod_symtable = lm->mod_ext_symtable;
+ lm->mod_symend = lm->mod_ext_symend;
+ mod_symtable_hash_install_range(lm->mod_symtable, lm->mod_symend);
+ }
lm->mod_flags &= ~(MOD_LOAD_SYMS|MOD_REMOTE|MOD_NOPATCH);
lm->mod_flags |= MOD_EXT_SYMS;
lm->mod_load_symtable = NULL;
@@ -12696,7 +13939,18 @@ delete_load_module(ulong base_addr)
req->name = lm->mod_namelist;
gdb_interface(req);
}
- mod_symtable_hash_remove_range(lm->mod_symtable, lm->mod_symend);
+ if (MODULE_MEMORY()) {
+ if (lm->mod_load_symtable) {
+ mod_symtable_hash_remove_range(lm->mod_load_symtable,
+ lm->mod_load_symend);
+ for_each_mod_mem_type(t) {
+ lm->load_symtable[t] = NULL;
+ lm->load_symend[t] = NULL;
+ }
+ }
+ } else
+ mod_symtable_hash_remove_range(lm->mod_symtable, lm->mod_symend);
+
if (lm->mod_load_symtable) {
free(lm->mod_load_symtable);
namespace_ctl(NAMESPACE_FREE,
@@ -12704,9 +13958,23 @@ delete_load_module(ulong base_addr)
}
if (lm->mod_flags & MOD_REMOTE)
unlink_module(lm);
- lm->mod_symtable = lm->mod_ext_symtable;
- lm->mod_symend = lm->mod_ext_symend;
- mod_symtable_hash_install_range(lm->mod_symtable, lm->mod_symend);
+
+ if (MODULE_MEMORY()) {
+ if (lm->mod_load_symtable) {
+ lm->symtable = lm->ext_symtable;
+ lm->symend = lm->ext_symend;
+ for_each_mod_mem_type(t) {
+ if (!lm->symtable[t])
+ continue;
+ mod_symtable_hash_install_range(lm->symtable[t],
+ lm->symend[t]);
+ }
+ }
+ } else {
+ lm->mod_symtable = lm->mod_ext_symtable;
+ lm->mod_symend = lm->mod_ext_symend;
+ mod_symtable_hash_install_range(lm->mod_symtable, lm->mod_symend);
+ }
lm->mod_flags &= ~(MOD_LOAD_SYMS|MOD_REMOTE|MOD_NOPATCH);
lm->mod_flags |= MOD_EXT_SYMS;
lm->mod_load_symtable = NULL;
@@ -13455,7 +14723,7 @@ is_downsized(char *name)
struct syment *
symbol_complete_match(const char *match, struct syment *sp_last)
{
- int i;
+ int i, t;
struct syment *sp, *sp_end, *sp_start;
struct load_module *lm;
int search_init;
@@ -13475,6 +14743,34 @@ symbol_complete_match(const char *match, struct syment *sp_last)
sp_start = NULL;
}
+ if (!MODULE_MEMORY())
+ goto old_module;
+
+ for (i = 0; i < st->mods_installed; i++) {
+ lm = &st->load_modules[i];
+
+ for_each_mod_mem_type(t) {
+ sp_end = lm->symend[t];
+ if (!sp_start)
+ sp_start = lm->symtable[t];
+
+ if (sp_start < lm->symtable[t] || sp_start > sp_end)
+ continue;
+
+ for (sp = sp_start; sp < sp_end; sp++) {
+ if (MODULE_PSEUDO_SYMBOL(sp))
+ continue;
+
+ if (STRNEQ(sp->name, match))
+ return sp;
+ }
+ sp_start = NULL;
+ }
+ }
+
+ return NULL;
+
+old_module:
search_init = FALSE;
for (i = 0; i < st->mods_installed; i++) {
@@ -13521,3 +14817,58 @@ symbol_complete_match(const char *match, struct syment *sp_last)
return NULL;
}
+
+/* Returns module memory type if addr is in range, otherwise MOD_INVALID(-1) */
+static int
+in_module_range(ulong addr, struct load_module *lm, int start, int end)
+{
+ ulong base = 0, size = 0;
+ int i;
+
+ if (!MODULE_MEMORY())
+ goto old_module;
+
+ for (i = start ; i <= end; i++) {
+ base = lm->mem[i].base;
+ size = lm->mem[i].size;
+ if (!size)
+ continue;
+ if ((addr >= base) && (addr < (base + size)))
+ return i;
+ }
+ return MOD_INVALID;
+
+old_module:
+ if (start == MOD_TEXT) {
+ base = lm->mod_base;
+ size = lm->mod_size;
+ } else if (start == MOD_INIT_TEXT) {
+ base = lm->mod_init_module_ptr;
+ size = lm->mod_init_size;
+ } else
+ error(FATAL, "invalid module memory type!");
+
+ if ((addr >= base) && (addr < (base + size)))
+ return start;
+
+ return MOD_INVALID;
+}
+
+/* Returns module memory type, otherwise MOD_INVALID(-1) */
+static int
+module_mem_type(ulong addr, struct load_module *lm)
+{
+ return in_module_range(addr, lm, MOD_TEXT, MOD_INIT_RODATA);
+}
+
+/* Returns the end address of the module memory region. */
+static ulong
+module_mem_end(ulong addr, struct load_module *lm)
+{
+ int type = module_mem_type(addr, lm);
+
+ if (type == MOD_INVALID)
+ return 0;
+
+ return lm->mem[type].base + lm->mem[type].size;
+}
--
2.31.1
1 year, 1 month
- 2
- 2