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fd1ee315dc
Instead of iterate over previously queued buffers in clock
scaling code do cache the payload in instance context structure
for later use when calculating new clock rate.
This will avoid to use spin locks during buffer list iteration
in clock_scaling.
This fixes following kernel Oops:
Unable to handle kernel paging request at virtual address deacfffffffffd6c
Mem abort info:
ESR = 0x96000004
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
Data abort info:
ISV = 0, ISS = 0x00000004
CM = 0, WnR = 0
[deacfffffffffd6c] address between user and kernel address ranges
Internal error: Oops: 96000004 [#1] PREEMPT SMP
CPU: 7 PID: 5763 Comm: V4L2DecoderThre Tainted: G S W 5.4.11 #8
pstate: 20400009 (nzCv daif +PAN -UAO)
pc : load_scale_v4+0x4c/0x2bc [venus_core]
lr : session_process_buf+0x18c/0x1c0 [venus_core]
sp : ffffffc01376b8d0
x29: ffffffc01376b8d0 x28: ffffff80cf1b0220
x27: ffffffc01376bba0 x26: ffffffd8f562b2d8
x25: ffffff80cf1b0220 x24: 0000000000000005
x23: ffffffd8f5620d98 x22: ffffff80ca01c800
x21: ffffff80cf1b0000 x20: ffffff8149490080
x19: ffffff8174b2c010 x18: 0000000000000000
x17: 0000000000000000 x16: ffffffd96ee3a0dc
x15: 0000000000000026 x14: 0000000000000026
x13: 00000000000055ac x12: 0000000000000001
x11: deacfffffffffd6c x10: dead000000000100
x9 : ffffff80ca01cf28 x8 : 0000000000000026
x7 : 0000000000000000 x6 : ffffff80cdd899c0
x5 : ffffff80cdd899c0 x4 : 0000000000000008
x3 : ffffff80ca01cf28 x2 : ffffff80ca01cf28
x1 : ffffff80d47ffc00 x0 : ffffff80cf1b0000
Call trace:
load_scale_v4+0x4c/0x2bc [venus_core]
session_process_buf+0x18c/0x1c0 [venus_core]
venus_helper_vb2_buf_queue+0x7c/0xf0 [venus_core]
__enqueue_in_driver+0xe4/0xfc [videobuf2_common]
vb2_core_qbuf+0x15c/0x338 [videobuf2_common]
vb2_qbuf+0x78/0xb8 [videobuf2_v4l2]
v4l2_m2m_qbuf+0x80/0xf8 [v4l2_mem2mem]
v4l2_m2m_ioctl_qbuf+0x2c/0x38 [v4l2_mem2mem]
v4l_qbuf+0x48/0x58
__video_do_ioctl+0x2b0/0x39c
video_usercopy+0x394/0x710
video_ioctl2+0x38/0x48
v4l2_ioctl+0x6c/0x80
do_video_ioctl+0xb00/0x2874
v4l2_compat_ioctl32+0x5c/0xcc
__se_compat_sys_ioctl+0x100/0x2074
__arm64_compat_sys_ioctl+0x20/0x2c
el0_svc_common+0xa4/0x154
el0_svc_compat_handler+0x2c/0x38
el0_svc_compat+0x8/0x10
Code: eb0a013f 54000200 aa1f03e8 d10e514b (b940016c)
---[ end trace e11304b46552e0b9 ]---
Fixes:
|
||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.