Greg KH wrote:
-stable review patch. If anyone has any objections, please let us know.
------------------
From: H. Peter Anvin <[email protected]>
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 <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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.
-hpa
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