Hallo, On Tuesday 04 March 2025, Greg KH wrote: > On Tue, Mar 04, 2025 at 03:49:35PM +0100, Ulrich Gemkow wrote: > > Hello, > > > > starting with stable kernel 6.6.18 we have problems with PXE booting. > > A bisect shows that the following patch is guilty: > > > > From 768171d7ebbce005210e1cf8456f043304805c15 Mon Sep 17 00:00:00 2001 > > From: Ard Biesheuvel <ardb@xxxxxxxxxx> > > Date: Tue, 12 Sep 2023 09:00:55 +0000 > > Subject: x86/boot: Remove the 'bugger off' message > > > > Signed-off-by: Ard Biesheuvel <ardb@xxxxxxxxxx> > > Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> > > Acked-by: H. Peter Anvin (Intel) <hpa@xxxxxxxxx> > > Link: https://lore.kernel.org/r/20230912090051.4014114-21-ardb@xxxxxxxxxx > > > > With this patch applied PXE starts, requests the kernel and the initrd. > > Without showing anything on the console, the boot process stops. > > It seems, that the kernel crashes very early. > > > > With stable kernel 6.6.17 PXE boot works without problems. > > > > Reverting this single patch (which is part of a larger set of > > patches) solved the problem for us, PXE boot is working again. > > > > We use the packages syslinux-efi and syslinux-common from Debian 12. > > The used boot files are /efi64/syslinux.efi and /ldlinux.e64. > > > > Our config-File (for 6.6.80) is attached. > > > > Regarding the patch description, we really do not boot with a floppy :-) > > > > Any help would be greatly appreciated, I have a bit of a bad feeling > > about simply reverting a patch at such a deep level in the kernel. > > Does newer kernels than 6.7.y work properly? What about the latest > 6.12.y release? > > thanks, > > greg k-h > Thanks for looking into this! The latest 6.12.y kernel has the same problem, it also needs reverting the mentioned patch. I did not test Kernels in between but I am happy to do so, when this gives a hint. Thanks again and best regards Ulrich -- |----------------------------------------------------------------------- | Ulrich Gemkow | University of Stuttgart | Institute of Communication Networks and Computer Engineering (IKR) |-----------------------------------------------------------------------
