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    SubjectRe: [PATCH v5 4/4] printk: use the lockless ringbuffer
    On 2020-08-11, Nick Desaulniers <> wrote:
    > From what I can tell, I think this patch ("printk: use the lockless
    > ringbuffer") breaks lx-dmesg in CONFIG_GDB_SCRIPTS.
    > (gdb) lx-dmesg
    > Python Exception <class 'gdb.error'> No symbol "log_first_idx" in specified context.:
    > Error occurred in Python: No symbol "log_first_idx" in specified context.
    > This command is used to dump the printk log buffer.
    > It looks like the only places left in the kernel that reference are:
    > - Documentation/admin-guide/kdump/gdbmacros.txt
    > - Documentation/admin-guide/kdump/vmcoreinfo.rst
    > - scripts/gdb/linux/
    > I believe this commit removed log_first_idx, so all of the above
    > probably need to be fixed up, too.

    Thanks for pointing this out! I will get to work on a patch for this.

    John Ogness

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