https://github.com/torvalds/linux
Revision 1b3a62643660020cdc68e6139a010c06e8fc96c7 authored by Kirill A. Shutemov on 01 August 2018, 13:32:25 UTC, committed by Thomas Gleixner on 02 August 2018, 12:22:22 UTC
There were two report of boot failure cased by trampoline placed into
a reserved memory region. It can happen on machines that don't report
EBDA correctly.
Fix the problem by re-validating the found address against the E820 table.
If the address is in a reserved area, find the next usable region below the
initial address.
Fixes: 3548e131ec6a ("x86/boot/compressed/64: Find a place for 32-bit trampoline")
Reported-by: Dmitry Malkin <d.malkin@real-time-systems.com>
Reported-by: youling 257 <youling257@gmail.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lkml.kernel.org/r/20180801133225.38121-1-kirill.shutemov@linux.intel.com
1 parent 6b47037
Tip revision: 1b3a62643660020cdc68e6139a010c06e8fc96c7 authored by Kirill A. Shutemov on 01 August 2018, 13:32:25 UTC
x86/boot/compressed/64: Validate trampoline placement against E820
x86/boot/compressed/64: Validate trampoline placement against E820
Tip revision: 1b3a626
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| fs | ||
| include | ||
| init | ||
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| kernel | ||
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| net | ||
| samples | ||
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| security | ||
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| .clang-format | -rw-r--r-- | 12.8 KB |
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 31 bytes |
| .gitattributes | -rw-r--r-- | 30 bytes |
| .gitignore | -rw-r--r-- | 1.5 KB |
| .mailmap | -rw-r--r-- | 9.3 KB |
| COPYING | -rw-r--r-- | 423 bytes |
| CREDITS | -rw-r--r-- | 96.3 KB |
| Kbuild | -rw-r--r-- | 2.2 KB |
| Kconfig | -rw-r--r-- | 321 bytes |
| MAINTAINERS | -rw-r--r-- | 449.5 KB |
| Makefile | -rw-r--r-- | 58.2 KB |
| README | -rw-r--r-- | 800 bytes |
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