Hello.
Grzegorz Kulewski wrote:
Does the bug also egsist on AMD CPU's?
Yes. As well as the ones of a Transmeta etc. I just haven't tested the old Cyrixes, that AFAIK were trying to ignore some Intel bugs. The test-case for the bug is here: http://www.ussg.iu.edu/hypermail/linux/kernel/0409.2/0690.html
I've just ran that on my Cyrix MII PR300 and the bug is present: old_ss=0x7b new_ss=0x7f In sighandler: esp=bffff780 old_esp=0xbffff780 new_esp=0xc1a6f780 BUG!
I have also an older Cyrix CPU - 6x86 PR166 - but can't test it now as it's sitting in a plastic box on the shelf :-)
UMC U5SX/33 in my router - also present: old_ss=0x7b new_ss=0x7f In sighandler: esp=bffff820 old_esp=0xbffff820 new_esp=0xc003f820 BUG!
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