On Fri, Feb 02, 2024 at 03:18:48PM +0106, John Ogness wrote: > On 2024-02-02, "Paul E. McKenney" <paulmck@xxxxxxxxxx> wrote: > > So the system really did boot and is running just fine. It is just that > > there is no console output. Details, details! > > > > Is there anything I can do to some combination of workqueues and printk > > to help debug this? > > The printk ringbuffer contents would certainly be interesting. > > If you build the GDB scripts (CONFIG_GDB_SCRIPTS) then you will have: > > (gdb) lx-dmesg This says no such command even though I do have CONFIG_GDB_SCRIPTS=y in my .config. > As an alternative, you could copy the contents of > Documentation/admin-guide/kdump/gdbmacros.txt into your .gdbinit and > then will have: > > (gdb) dmesg This one hangs. > There may be some hints in the kernel log as to why there is no console > output. On the other hand, next-20240202 doesn't show the problem. No idea what might have changed. :-/ Thanx, Paul
