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4dbcdc9cad
This patch is to fix the NULL pointer that missed set_disp_pattern_generator callback on DCN301 [ 505.054167] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 505.054176] #PF: supervisor instruction fetch in kernel mode [ 505.054181] #PF: error_code(0x0010) - not-present page [ 505.054185] PGD 0 P4D 0 [ 505.054199] Oops: 0010 [#1] SMP NOPTI [ 505.054211] CPU: 6 PID: 1306 Comm: modprobe Tainted: G W OE 5.9.0-rc5-custom #1 [ 505.054216] Hardware name: AMD Chachani-VN/Chachani-VN, BIOS WCH0A29N_RAPV16.FD 10/29/2020 [ 505.054225] RIP: 0010:0x0 [ 505.054234] Code: Bad RIP value. [ 505.054239] RSP: 0018:ffffb88541c66f60 EFLAGS: 00010206 [ 505.054245] RAX: 0000000000000000 RBX: ffff912836070000 RCX: 0000000000000003 [ 505.054248] RDX: 000000000000000c RSI: ffff9128365001e8 RDI: ffff912836070000 [ 505.054252] RBP: ffffb88541c66fd8 R08: 0000000000000002 R09: ffffb88541c66fa2 [ 505.054265] R10: 0000000000009580 R11: 0000000000000008 R12: ffff9128365001e8 [ 505.054272] R13: 000000000000000c R14: 0000000000000438 R15: ffff9128a48bd000 [ 505.054279] FS: 00007f09f999f540(0000) GS:ffff9128b3f80000(0000) knlGS:0000000000000000 [ 505.054284] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 505.054288] CR2: ffffffffffffffd6 CR3: 00000002db98c000 CR4: 0000000000350ee0 [ 505.054291] Call Trace: [ 505.055024] dcn20_blank_pixel_data+0x148/0x260 [amdgpu] [ 505.055730] dcn20_enable_stream_timing+0x381/0x47c [amdgpu] [ 505.056641] dce110_apply_ctx_to_hw+0x337/0x577 [amdgpu] [ 505.056667] ? put_object+0x2f/0x40 [ 505.057329] dc_commit_state+0x4b3/0x9d0 [amdgpu] [ 505.058030] amdgpu_dm_atomic_commit_tail+0x405/0x1ec6 [amdgpu] [ 505.058053] ? update_stack_state+0x103/0x170 [ 505.058071] ? __module_text_address+0x12/0x60 Signed-off-by: Huang Rui <ray.huang@amd.com> Tested-by: Changfeng <Changfeng.Zhu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> |
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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.