On Sat, Apr 06, 2013 at 01:52:09PM +0800, Zhang Yanfei wrote: > ? 2013?04?03? 17:43, Wang YanQing ??: > > I get garbage output of /proc/cmdline and in dmesg when I > > use kexec to load new kernel bzImage without append command > > line like below: > > > > kexec -l bzImage --initrd=initramfs. > > Hello Wang > > I tried this: > > ./build/sbin/kexec -l /boot/vmlinuz-2.6.32-279.el6.i686 --initrd=/boot/initramfs-2.6.32-279.el6.i686.img > > But nothing happened and it seemed the command loaded the kernel successfully. > Can you describe your situation more concretely, please? Yes, it will load the kernel successfully, but when you use kexec -e to run into the loaded kernel, in the new kernel context, you will get garbage output when execute `cat /proc/cmdline`, and you also can see the garbage in "Kernel command line" from dmesg. I am sure you will see this issue, because when user pass no cmdline, and cmdline_len will because zero, so the line below in setup_linux_bootloader_parameters_high will not work: cmdline_ptr[cmdline_len - 1] = '\0'; Thanks
