直接執行傳遞引數
linux ubda=umfs kernel loglevel=7
gdb除錯方式傳遞引數
suse:/jingsheng/linux_src/linux-2.6.36 #gdb linux
gnu gdb (gdb) suse (7.1-3.12)
license gplv3+: gnu gpl version 3 or later
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this gdb was configured as "i586-suse-linux".
for bug reporting instructions, please see:
...reading symbols from /usr/bin/linux...done.
(gdb)
set args kernel loglevel=7
(gdb)
b setup_arch
breakpoint 1 at 0x804a49f: file /jingsheng/linux_src/linux-2.6.36/arch/um/kernel/um_arch.c, line 376.
(gdb) r
starting program: /usr/bin/linux kernel loglevel=7
missing separate debuginfo for /lib/ld-linux.so.2
try: zypper install -c "debuginfo(build-id)=22e2b3718e8271a0d899156a796b0a90bc4dc391"
missing separate debuginfo for /lib/libutil.so.1
try: zypper install -c "debuginfo(build-id)=f2aae04f3b52fa334fc443f4e4e80f58479c65af"
missing separate debuginfo for /lib/libc.so.6
try: zypper install -c "debuginfo(build-id)=62a8bfd7732322fa6b9c39d39a830a8028804534"
locating the bottom of the address space ...
program received signal sigsegv, segmentation fault.
0x0806748b in page_ok (page=) at /jingsheng/linux_src/linux-2.6.36/arch/um/os-linux/sys-i386/task_size.c:31
31 n = *address;
breakpoint 1, setup_arch (cmdline_p=0x8222f9c) at /jingsheng/linux_src/linux-2.6.36/arch/um/kernel/um_arch.c:376
376 paging_init();
(gdb) bt
#0 setup_arch (cmdline_p=0x8222f9c) at /jingsheng/linux_src/linux-2.6.36/arch/um/kernel/um_arch.c:376
#1 0x08049360 in start_kernel () at /jingsheng/linux_src/linux-2.6.36/init/main.c:569
#2 0x0804a566 in start_kernel_proc (unused=0x0) at /jingsheng/linux_src/linux-2.6.36/arch/um/kernel/skas/process.c:46
#3 0x080651fe in run_kernel_thread (fn=0x804a53a , arg=0x0, jmp_ptr=0x82247fc)
at /jingsheng/linux_src/linux-2.6.36/arch/um/os-linux/process.c:267
#4 0x08058835 in new_thread_handler () at /jingsheng/linux_src/linux-2.6.36/arch/um/kernel/process.c:153
#5 0x00000000 in ?? ()
(gdb) l
371 return start_uml();
372 }
373374 void __init setup_arch(char **cmdline_p)
375
(gdb) p command_line
$3 = "kernel loglevel=7 root=98:0", '\000'
(gdb)
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