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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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fe38d8553c
i386 CPU init code accesses freed init memory when booting a newly-started
processor after CPU hotplug. The cpu_devs array is searched to find the
vendor and it contains pointers to freed data.
Fix that by:
1. Zeroing entries for freed vendor data after bootup.
2. Changing Transmeta, NSC and UMC to all __init[data].
3. Printing a warning (once only) and setting this_cpu
to a safe default when the vendor is not found.
This does not change behavior for AMD systems. They were broken already
but no error was reported.
Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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|---|---|---|
| .. | ||
| cpufreq | ||
| mcheck | ||
| mtrr | ||
| amd.c | ||
| centaur.c | ||
| common.c | ||
| cpu.h | ||
| cyrix.c | ||
| intel_cacheinfo.c | ||
| intel.c | ||
| Makefile | ||
| nexgen.c | ||
| proc.c | ||
| rise.c | ||
| transmeta.c | ||
| umc.c | ||