On Tue, 4 Mar 2025 at 15:49, Ulrich Gemkow <ulrich.gemkow@xxxxxxxxxxxxxxxxxxxx> 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. > Hello Ulrich, Thanks for the report, and apologies for the breakage. I will look into this today - hopefully it is something that can be resolved swiftly. Can you share your syslinux config too, please?
