I didn't give the user raw oopses. I give him core file. When the kernel die, do we can get a core file now? (gdb) bt #0 0xc0008470 in kernel_init (unused=<value optimized out>) at /home/teawater/kernel/arm_versatile_926ejs.glibc_std.standard/build/linux/init/main.c:916 #1 0xc0042660 in sys_waitid (which=<value optimized out>, upid=<value optimized out>, infop=0x0, options=0, ru=0x14) at /home/teawater/kernel/arm_versatile_926ejs.glibc_std.standard/build/linux/kernel/exit.c:1798 Backtrace stopped: previous frame inner to this frame (corrupt stack?) It show which line make kernel die. Hui On Mon, Jan 4, 2010 at 00:44, Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx> wrote: > On Mon, Jan 04, 2010 at 12:30:20AM +0800, Hui Zhu wrote: >> This S2C: message just for program s2c. >> s2c can convert it to a core file. Then gdb can do a clear analyse >> with this file. >> Then you can get more message than current we can get. > > I understand that. What I'm saying is that all the additional noise > you're causing the kernel to create is just a pure duplication of > what we already dump. > > Oops dumps are already noisy enough - especially if they cause a panic > at the end (where you end up with two backtraces.) We do not need even > more noise caused by needless duplication. > > You can get everything you need already from the kernel. On ARM, we > already dump out all the registers and the _full_ stack. There is no > need for you to implement your own register dumping code and full stack > dump on top of that again. > > So, I'm not going to accept your patch for the ARM kernel. Please use > what's already provided - it's more than adequate. By doing so, you > don't penalise those of us who want to read the raw oopses. > > Talking about noisy oopses, I'm getting one with 2.6.33-rc2 on 'poweroff' > shutdown. No idea what it is because most of it's scrolled off the top of > the screen and I can't scroll back. Not bothered about it at the moment. > What it does illustrate though is why making things too noisy when problems > occur makes it _more_ difficult to find out what went wrong. >
