Moving weak definitions to some other new source file can also get rid
of this. We are working on it.
On Fri, 2006-09-08 at 04:11 +0200, Florian Delizy wrote:
> Florian Delizy wrote:
> > Hi,
>
> > I am trying to make kgdb work on x86_64 with the 2.6.17 kernel version.
> > I took the last cvs version as it seemed in the cvs tree comments that
> > patches had been moved to 2.6.17, but when I try to start a kernel with
> > kgdbwait I get the following message :
>
> > Kernel command line: root=/dev/sda1 ro mouse=imps2 vga=791 console=tty0
> > gdbttys=0 console=ttyS1 kgdbwait
> > KGDB cannot initialize I/O yet.
> > Initializing CPU#0
> > PID hash table entries: 4096 (order: 12, 32768 bytes)
> > time.c: Using 3.579545 MHz WALL PM GTOD PIT/TSC timer.
> > time.c: Detected 1995.046 MHz processor.
> > Console: colour dummy device 80x25
> > Waiting for connection from remote gdb...
> > int3: 0000 [1]
> > CPU 0
> > Modules linked in:
> > Pid: 0, comm: swapper Not tainted 2.6.17 #4
> > RIP: 0010:[<ffffffff80248d38>] <ffffffff80248d38>{breakpoint+167}
> > RSP: 0018:ffffffff8063eee8 EFLAGS: 00000292
> > RAX: 000000000000002d RBX: 0000000000000000 RCX: 0000000000000d35
> > RDX: 0000000000000d35 RSI: 0000000000000d35 RDI: ffffffff8058b3d0
> > RBP: ffffffff8063eee8 R08: 0000000000000002 R09: ffff81000c008000
> > R10: ffffffff8063eca8 R11: 00000000000000a8 R12: ffffffff806630f0
> > R13: 000000000000000a R14: 0000000000000000 R15: 0000000000000000
> > FS: 0000000000000000(0000) GS:ffffffff806b8000(0000)
> > knlGS:0000000000000000
> > CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
> > CR2: 0000000000000000 CR3: 0000000000201000 CR4: 00000000000006a0
> > Process swapper (pid: 0, threadinfo ffffffff806be000, task
> > ffffffff80583360)
> > Stack: ffffffff8063eef8 ffffffff80248d70 ffffffff8063ef18
> > ffffffff8022ce7d
>
>
> > (complete output is attached -- eikichi.log --, as well as .config)
>
> > At this point I did not even try to connect with kgdb, I just had a
> > console listening on ttyS1 (from where I get this listing). It's already
> > been some time I try to make it work ...
>
> > Can anyone point at me what I did wrong or give me a start point ?
>
>
> OK, after spending a whole nite on the problem I finally found the bug.
> It is a gcc 4.1 bug !! (problem with weak symbols) and it was already
> reported on the list, but I only understood after tracking it down....
>
> Anyway, here is a workaround patch, but only use it with gcc < 4.1.2
> (September 01 pre release). I just upgraded my gcc from the debian
> testing distribution, and it works fine for me now :)
>
> Happy hacking !
>
> Florian
>
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