[uml-devel] How to avoid stopping at gdb's "Program received signal SIGSEGV, Segmentation fault"?

["Peter Teoh" <htmldeveloper@gmail.com>]

When I run gdb ./linux (my UML-compiled kernel):

(gdb) run ubda=/mnt/hd1/download/FedoraCore5-x86-root_fs mem=128M
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /mnt/hd0/download/linux-2.6-latest/uml/linux
ubda=/mnt/hd1/download/FedoraCore5-x86-root_fs mem=128M
Locating the bottom of the address space ...
Program received signal SIGSEGV, Segmentation fault.
0x080664ff in page_ok (page=<value optimized out>) at
/mnt/hd0/download/linux-2.6-latest/arch/um/os-Linux/sys-i386/task_size.c:31
31                      n = *address;

The flow keep stopping at the following message:

Program received signal SIGTRAP, Trace/breakpoint trap.

And I have to "next" many many times....the execution flow continue as
per normal.   But I would like to ignore the breakpoint trap, how?
(It is not a breakpoint by itself)   Execution flow continues normally
can be deduced because when I enter "bt" I can see the stacktrace
anytime:

(gdb) bt
#0  0x00556c2b in __i686.get_pc_thunk.bx () from /lib/ld-linux.so.2
#1  0x0054a8f8 in _dl_lookup_symbol_x () from /lib/ld-linux.so.2
#2  0x0054eac2 in _dl_fixup () from /lib/ld-linux.so.2
#3  0x00554260 in _dl_runtime_resolve () from /lib/ld-linux.so.2
#4  0x08066526 in page_ok (page=<value optimized out>) at
/mnt/hd0/download/linux-2.6-latest/arch/um/os-Linux/sys-i386/task_size.c:33
#5  0x08066607 in os_get_top_address () at
/mnt/hd0/download/linux-2.6-latest/arch/um/os-Linux/sys-i386/task_size.c:100
#6  0x0804a232 in linux_main (argc=3, argv=0xbffb46f4) at
/mnt/hd0/download/linux-2.6-latest/arch/um/kernel/um_arch.c:277
#7  0x0804ad16 in main (argc=3, argv=0xbffb46f4, envp=0xbffb4704) at
/mnt/hd0/download/linux-2.6-latest/arch/um/os-Linux/main.c:150


-- 
Regards,
Peter Teoh

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