linux-kernel - Re: scripts/gdb: received an error when invoking lx-symbols

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Date:   Wed, 22 Jul 2020 12:02:04 +0200
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     Jan Kiszka <jan.kiszka@...mens.com>
Cc:     Kieran Bingham <kbingham@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: scripts/gdb: received an error when invoking lx-symbols

On Wed, Jul 22, 2020 at 11:19:42AM +0200, Jan Kiszka wrote:
> On 22.07.20 11:13, Stefano Garzarella wrote:
> > Hi Jan, Kieran,
> > with the last Linux 5.8-rc6 I have some problems with gdb scripts.
> > Everything is fine with Linux 5.7.
> > 
> > When I call lx-symbols, I received this error while loading modules
> > symbols:
> > 
> >      (gdb) set python print-stack full
> >      (gdb) target remote :1234
> >      Remote debugging using :1234
> >      arch_atomic_read (v=<optimized out>) at ../arch/x86/kernel/process.c:687
> >      687		trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, smp_processor_id());
> >      (gdb) lx-symbols
> >      loading vmlinux
> >      scanning for modules in /home/stefano/repos/linux_vsock/build-tiny-config
> >      loading @0xffffffffc0169000: /home/stefano/repos/linux_vsock/build-tiny-config/drivers/net/tun.ko
> >      Traceback (most recent call last):
> >        File "/home/stefano/repos/linux_vsock/build-tiny-config/scripts/gdb/linux/symbols.py", line 174, in invoke
> >          self.load_all_symbols()
> >        File "/home/stefano/repos/linux_vsock/build-tiny-config/scripts/gdb/linux/symbols.py", line 161, in load_all_symbols
> >          [self.load_module_symbols(module) for module in module_list]
> >        File "/home/stefano/repos/linux_vsock/build-tiny-config/scripts/gdb/linux/symbols.py", line 161, in <listcomp>
> >          [self.load_module_symbols(module) for module in module_list]
> >        File "/home/stefano/repos/linux_vsock/build-tiny-config/scripts/gdb/linux/symbols.py", line 131, in load_module_symbols
> >          sections=self._section_arguments(module))
> >        File "/home/stefano/repos/linux_vsock/build-tiny-config/scripts/gdb/linux/symbols.py", line 98, in _section_arguments
> >          section_name_to_address = {
> >        File "/home/stefano/repos/linux_vsock/build-tiny-config/scripts/gdb/linux/symbols.py", line 99, in <dictcomp>
> >          attrs[n]['name'].string(): attrs[n]['address']
> >      gdb.error: There is no member named name.
> >      Error occurred in Python: There is no member named name.
> > 
> > I'll try to bisect.
> 
> Dig for changes in the data structure (module_sect_attr).

Thanks for the hint, I think I found the problem, I'll send a patch :-)

Stefano