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Subject: Re: scripts/gdb: received an error when invoking lx-symbols
To:     Stefano Garzarella <sgarzare@redhat.com>,
        Kieran Bingham <kbingham@kernel.org>
Cc:     linux-kernel@vger.kernel.org
References: <20200722091342.c3iss32caiuuizja@steredhat>
From:   Jan Kiszka <jan.kiszka@siemens.com>
Message-ID: <04728663-acde-bfb7-84dc-f97d628bc739@siemens.com>
Date:   Wed, 22 Jul 2020 11:19:42 +0200
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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).

Jan

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