gdb output

qemu

$ LANG=C gdb vmlinux
GNU gdb (GDB) 7.2-debian
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License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/sd/src/lll-project/test-qemu/vmlinux...done.
(gdb) target remote localhost:1234
Remote debugging using localhost:1234
0xc1037489 in panic (fmt=<value optimized out>) at kernel/panic.c:152
152                     mdelay(PANIC_TIMER_STEP);
(gdb) backtrace full
#0  0xc1037489 in panic (fmt=<value optimized out>) at kernel/panic.c:152                                                                                                                            
        args = 0xc143fc08 "F"                                                                                                                                                                        
        buf = "Attempted to kill the idle task!", '\000' <repeats 991 times>                                                                                                                         
#1  0xc103a0f7 in do_exit (code=<value optimized out>) at kernel/exit.c:915                                                                                                                          
        tsk = 0xc146b140                                                                                                                                                                             
#2  0xc132c43b in oops_end (flags=<value optimized out>, regs=<value optimized out>, signr=<value optimized out>)                                                                                    
    at arch/x86/kernel/dumpstack.c:260                                                                                                                                                               
No locals.                                                                                                                                                                                           
#3  0xc10215a4 in no_context (regs=<value optimized out>, error_code=<value optimized out>) at arch/x86/mm/fault.c:672                                                                               
        tsk = <value optimized out>                                                                                                                                                                  
        flags = 70                                                                                                                                                                                   
        sig = <value optimized out>                                                                                                                                                                  
#4  0xc102195e in __bad_area_nosemaphore (regs=Unhandled dwarf expression opcode 0xc1                                                                                                                
) at arch/x86/mm/fault.c:738                                                                                                                                                                         
        tsk = <value optimized out>                                                                                                                                                                  
#5  0xc1021229 in bad_area_nosemaphore (regs=Unhandled dwarf expression opcode 0xc1                                                                                                                  
) at arch/x86/mm/fault.c:745                                                                                                                                                                         
No locals.                                                                                                                                                                                           
#6  0xc132dddd in do_page_fault (regs=<value optimized out>, error_code=Unhandled dwarf expression opcode 0xc1                                                                                       
) at arch/x86/mm/fault.c:1020                                                                                                                                                                        
        mm = 0x0                                                                                                                                                                                     
        flags = 1                                                                                                                                                                                    
        tsk = 0xc146b140                                                                                                                                                                             
        vma = <value optimized out>
        fault = <value optimized out>
#7  <signal handler called>
No symbol table info available.
#8  0xc11bee47 in __memcpy (to=0xc143fef1, from=0xffc37000, n=15)
    at /home/sd/src/lll-project/kernel/arch/x86/include/asm/string_32.h:35
No locals.
#9  memcpy (to=0xc143fef1, from=0xffc37000, n=15) at arch/x86/lib/memcpy_32.c:12
No locals.
#10 0xc14d1403 in memcpy_fromio (p=<value optimized out>) at /home/sd/src/lll-project/kernel/arch/x86/include/asm/io.h:233
No locals.
#11 dmi_present (p=<value optimized out>) at drivers/firmware/dmi_scan.c:403
No locals.
#12 0xc14d1399 in dmi_scan_machine () at drivers/firmware/dmi_scan.c:462
No locals.
#13 0xc14a5e21 in setup_arch (cmdline_p=<value optimized out>) at arch/x86/kernel/setup.c:857
No locals.
#14 0xc14a342e in start_kernel () at init/main.c:576
        command_line = 0xc14da5e0 ""
---Type <return> to continue, or q <return> to quit---
#15 0x00000000 in ?? ()
No symbol table info available.