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Requesting system reboot [ 7.936347] Unable to handle kernel NULL pointer dereference at virtual address 00000044 [ 7.937081] pgd = (ptrval) [ 7.937332] [00000044] *pgd=3d817835, *pte=00000000, *ppte=00000000 [ 7.937917] Internal error: Oops: 17 [#1] PREEMPT SMP ARM [ 7.938402] Modules linked in: [ 7.938699] CPU: 0 PID: 631 Comm: init Not tainted 4.19.111 #100 [ 7.939238] Hardware name: Generic DT based system [ 7.939686] PC is at snd_soc_component_update_bits+0x8/0x70 [ 7.940203] LR is at rk817_codec_power_down+0x170/0x1cc Change-Id: I68bb761346322750214f9fae8537d825d72f4a44 Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
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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