GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-11 17:20:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions
No description
885090 commits 24 branches 25 tags 2.7 GiB
C 97.9%
Assembly 1.1%
Shell 0.4%
Makefile 0.3%
Python 0.1%
Find a file
Ard Biesheuvel a470552ee8 efi: Don't attempt to map RCI2 config table if it doesn't exist 
Commit:

  1c5fecb612 ("efi: Export Runtime Configuration Interface table to sysfs")

... added support for a Dell specific UEFI configuration table, but
failed to take into account that mapping the table should not be
attempted unless the table actually exists. If it doesn't exist,
the code usually fails silently unless pr_debug() prints are
enabled. However, on 32-bit PAE x86, the splat below is produced due
to the attempt to map the placeholder value EFI_INVALID_TABLE_ADDR
which we use for non-existing UEFI configuration tables, and which
equals ULONG_MAX.

   memremap attempted on mixed range 0x00000000ffffffff size: 0x1e
   WARNING: CPU: 1 PID: 1 at kernel/iomem.c:81 memremap+0x1a3/0x1c0
   Modules linked in:
   CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.4.2-smp-mine #1
   Hardware name: Hewlett-Packard HP Z400 Workstation/0B4Ch, BIOS 786G3 v03.61 03/05/2018
   EIP: memremap+0x1a3/0x1c0
  ...
   Call Trace:
    ? map_properties+0x473/0x473
    ? efi_rci2_sysfs_init+0x2c/0x154
    ? map_properties+0x473/0x473
    ? do_one_initcall+0x49/0x1d4
    ? parse_args+0x1e8/0x2a0
    ? do_early_param+0x7a/0x7a
    ? kernel_init_freeable+0x139/0x1c2
    ? rest_init+0x8e/0x8e
    ? kernel_init+0xd/0xf2
    ? ret_from_fork+0x2e/0x38

Fix this by checking whether the table exists before attempting to map it.

Reported-by: Richard Narron <comet.berkeley@gmail.com>
Tested-by: Richard Narron <comet.berkeley@gmail.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Cc: linux-efi@vger.kernel.org
Fixes: 1c5fecb612 ("efi: Export Runtime Configuration Interface table to sysfs")
Link: https://lkml.kernel.org/r/20191210090945.11501-2-ardb@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-12-10 12:13:02 +01:00
arch TTY/Serial patches for 5.5-rc1 2019-12-03 14:09:14 -08:00
block compat_ioctl: remove most of fs/compat_ioctl.c 2019-12-01 13:46:15 -08:00
certs
crypto
Documentation chrome platform changes for v5.5 2019-12-03 14:37:12 -08:00
drivers efi: Don't attempt to map RCI2 config table if it doesn't exist 2019-12-10 12:13:02 +01:00
fs New code for 5.5: 2019-12-03 13:18:34 -08:00
include efi: Fix efi_loaded_image_t::unload type 2019-12-08 12:42:19 +01:00
init Kbuild updates for v5.5 2019-12-02 17:35:04 -08:00
ipc
kernel Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-12-03 12:20:25 -08:00
lib pci-v5.5-changes 2019-12-03 13:58:22 -08:00
LICENSES
mm mm/page_io.c: annotate refault stalls from swap_readpage 2019-12-01 12:59:11 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-12-01 20:35:03 -08:00
samples New tracing features: 2019-11-27 11:42:01 -08:00
scripts Kbuild updates for v5.5 2019-12-02 17:35:04 -08:00
security + Features 2019-12-03 12:51:35 -08:00
sound compat_ioctl: remove most of fs/compat_ioctl.c 2019-12-01 13:46:15 -08:00
tools pci-v5.5-changes 2019-12-03 13:58:22 -08:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap Here's the main documentation changes for 5.5: 2019-12-02 11:51:02 -08:00
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS pci-v5.5-changes 2019-12-03 13:58:22 -08:00
Makefile Kbuild updates for v5.5 2019-12-02 17:35:04 -08:00
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.

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.