Patrick Daly 7f3e23b3d8 ANDROID: GKI: of: reserved_mem: Fix kmemleak crash on no-map region
Unable to handle kernel paging request at virtual address
[<ffffff849b434d88>] scan_block+0x88/0x170
[<ffffff849b435070>] scan_gray_list+0x18c/0x1c0
[<ffffff849b4352ac>] kmemleak_scan+0x208/0x4b0
[<ffffff849b4359ec>] kmemleak_write+0x338/0x378
[<ffffff849b571068>] full_proxy_write+0x80/0xe4
[<ffffff849b43fe7c>] vfs_write+0xb4/0x1d0

early_init_dt_alloc_reserved_memory_arch() calls memblock_alloc_base(),
which will create a kmemleak entry. Ensure this entry is ignored if
the no-map property is set. This will prevent kmemleak from scanning
the object if there is no kernel mapping for it.

Bug: 153490586
Test: compile, verify MODVERSIONS CRC
Change-Id: I45f35600ae2aacf0f10f8bcbc956d019b666e4a7
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
Signed-off-by: Sudarshan Rajagopalan <sudaraja@codeaurora.org>
(cherry picked from commit cf512e1d2cae0d957674b5442a653ae5efb0a249)
Signed-off-by: Will McVicker <willmcvicker@google.com>
2020-04-08 14:34:09 -07:00
2020-03-03 07:33:01 +01:00
2020-03-25 09:50:38 +01:00
2020-04-03 08:17:23 +02:00
2020-02-24 09:13:25 +01:00
2020-03-03 07:33:01 +01:00

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.
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