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2899872b62As detected by kmemleak running on i.MX6ULL board:
nreferenced object 0xd8366600 (size 64):
comm "swapper/0", pid 1, jiffies 4294937370 (age 933.220s)
hex dump (first 32 bytes):
64 75 6d 6d 79 2d 69 6f 6d 75 78 63 2d 67 70 72 dummy-iomuxc-gpr
40 32 30 65 34 30 30 30 00 e3 f3 ab fe d1 1b dd @20e4000........
backtrace:
[<b0402aec>] kasprintf+0x2c/0x54
[<a6fbad2c>] regmap_debugfs_init+0x7c/0x31c
[<9c8d91fa>] __regmap_init+0xb5c/0xcf4
[<5b1c3d2a>] of_syscon_register+0x164/0x2c4
[<596a5d80>] syscon_node_to_regmap+0x64/0x90
[<49bd597b>] imx6ul_init_machine+0x34/0xa0
[<250a4dac>] customize_machine+0x1c/0x30
[<2d19fdaf>] do_one_initcall+0x7c/0x398
[<e6084469>] kernel_init_freeable+0x328/0x448
[<168c9101>] kernel_init+0x8/0x114
[<913268aa>] ret_from_fork+0x14/0x20
[<ce7b131a>] 0x0
Root cause is that map->debugfs_name is allocated using kasprintf
and then the pointer is lost by assigning it other memory address.
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.