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Filename Latest commit message Latest commit date
Ard Biesheuvel 61f0d55569 efi/esrt: Only call efi_mem_reserve() for boot services memory 
The following commit:

  7e1550b8f2 ("efi: Drop type and attribute checks in efi_mem_desc_lookup()")

refactored the implementation of efi_mem_desc_lookup() so that the type
check is moved to the callers, one of which is the x86 version of
efi_arch_mem_reserve(), where we added a modified check that only takes
EFI_BOOT_SERVICES_DATA regions into account.

This is reasonable, since it is the only memory type that requires this,
but doing so uncovered some unexpected behavior in the ESRT code, which
permits the ESRT table to reside in other types of memory than what the
UEFI spec mandates (i.e., EFI_BOOT_SERVICES_DATA), and unconditionally
calls efi_mem_reserve() on the region in question. This may result in
errors such as

  esrt: Reserving ESRT space from 0x000000009c810318 to 0x000000009c810350.
  efi: Failed to lookup EFI memory descriptor for 0x000000009c810318

when the ESRT table is not in EFI_BOOT_SERVICES_DATA memory, but we try
to reserve it nonetheless.

So make the call to efi_mem_reserve() conditional on the memory type.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Jones <pjones@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-07-17 09:15:05 +02:00
arch efi: Drop type and attribute checks in efi_mem_desc_lookup() 2018-07-16 00:43:12 +02:00
block for-linus-20180713 2018-07-14 12:28:00 -07:00
certs
crypto
Documentation Kbuild fixes for v4.18 (2nd) 2018-07-13 12:15:12 -07:00
drivers efi/esrt: Only call efi_mem_reserve() for boot services memory 2018-07-17 09:15:05 +02:00
firmware
fs reiserfs: fix buffer overflow with long warning messages 2018-07-14 11:11:10 -07:00
include efi: Remove the declaration of efi_late_init() as the function is unused 2018-07-16 00:43:12 +02:00
init
ipc
kernel Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-07-13 13:36:36 -07:00
lib
LICENSES
mm Merge branch 'akpm' (patches from Andrew) 2018-07-14 11:14:33 -07:00
net net/9p/client.c: put refcount of trans_mod in error case in parse_opts() 2018-07-14 11:11:09 -07:00
samples sample: vfio-mdev: avoid deadlock in mdev_access() 2018-07-11 13:22:41 -06:00
scripts checkpatch: fix duplicate invalid vsprintf pointer extension '%p<foo>' messages 2018-07-14 11:11:10 -07:00
security
sound ALSA: hda/ca0132: Update a pci quirk device name 2018-07-12 09:18:31 +02:00
tools Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-07-13 13:33:09 -07:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
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COPYING
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Makefile Linux 4.18-rc5 2018-07-15 12:49:31 -07:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.