我正在尝试查看在我的 iPad 上运行的应用程序的内存。我已经获得了应用程序的 pid，并且可以使用gdb.
iPad:~/dev root# gdb -p 3839
GNU gdb 6.3.50.20050815-cvs (Fri May 20 08:08:42 UTC 2011)
Copyright 2004 Free Software Foundation, Inc.
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Type "show copying" to see the conditions.
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This GDB was configured as "--host=arm-apple-darwin9 --target=".
/private/var/root/dev/3839: No such file or directory
Attaching to process 3839.
0x35824004 in ?? ()
(gdb)
但是，当我尝试转储其中一个内存区域时：
(gdb) info mach-regions
Region from 0x22000 to 0x24000 (---, max r-x; copy, private, not-reserved)
... from 0x24000 to 0x269000 (---, max r-x; copy, private, not-reserved)
[...]
... from 0x267a000 to 0x267b000 (---, max rwx; copy, private, not-reserved)
... from 0x267b000 to 0x267c000 (---, max rwx; copy, private, not-reserved)
... from 0x267c000 to 0x267d000 (---, max rwx; copy, private, not-reserved)
... from 0x267d000 to 0x267f000 (---, max rwx; copy, private, not-reserved)
... from 0x267f000 to 0x2680000 (---, max rwx; copy, private, not-reserved)
[...]
(gdb) dump binary memory output.bin 0x267c000 0x267d000
我收到此错误：
gdb stack crawl at point of internal error:
0 gdb 0x00170e74 internal_vproblem + 124
1 gdb 0x0016dd68 internal_verror + 52
2 gdb 0x0016dd94 align_down + 0
3 gdb 0x0016def8 gdb_check_fatal + 36
4 gdb 0x001eba9c mach_xfer_memory + 588
5 gdb 0x000c7ca8 default_xfer_partial + 256
6 gdb 0x000ca04c target_xfer_partial + 1004
7 gdb 0x000ca404 target_read_partial + 56
8 gdb 0x000ca488 target_read + 120
9 gdb 0x000ca674 target_read_memory + 68
10 gdb 0x00003f5c dump_memory_to_file + 276
11 gdb 0x0016c804 execute_command + 1160
12 gdb 0x000aba88 command_handler + 228
13 gdb 0x000acd94 command_line_handler + 768
14 gdb 0x002236b4 rl_callback_read_char + 160
../../gdb-1518/src/gdb/macosx/macosx-nat-mutils.c:772: internal-error: assertion failure in function "mach_xfer_memory": r_end >= cur_memaddr
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) y
一旦我退出 gdb，应用程序也会崩溃。
似乎我做的一切都是正确的，在这里......为什么会发生错误？以及如何让它发挥作用？
我在第一代 iPad 上运行 iOS 5.1.1。