Messages in this thread | | | Date | Wed, 14 Nov 2007 23:27:01 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [patch 16/19] x86 setup: handle boot loaders which set up the stack incorrectly |
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Greg KH wrote: > -stable review patch. If anyone has any objections, please let us know. > > ------------------ > From: H. Peter Anvin <hpa@zytor.com> > > patch 6b6815c6d5d1dc209701d1661a7a0e09a295db2f in mainline. > > Apparently some specific versions of LILO enter the kernel with a > stack pointer that doesn't match the rest of the segments. Make our > best attempt at untangling the resulting mess. > > Signed-off-by: H. Peter Anvin <hpa@zytor.com> > Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Just FYI:
It has been reported that while this patch fixes old LILO, and possibly some other boot loaders (unknown), it has also broken older versions of SYSLINUX: they still boot, but the command line is truncated (exactly how much depends on the BIOS, but typical values are around 130 bytes.)
This is definitely traceable to a bug in SYSLINUX that was already fixed in release 3.50 (the current version of SYSLINUX is 3.52).
I have chosen to leave the patch in mainline, rather than trying yet another recipe and hope it doesn't break on some other random combination of bootloaders, since:
a) SYSLINUX is generally easily updated, compared to other bootloaders; b) The failure mode is less severe (it still boots.)
... however, you may choose to call differently.
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