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add4163aca
modprobe drm_hdmi_state_helper_test and then rmmod it, the following
memory leak occurs.
The `mode` allocated in drm_mode_duplicate() called by
drm_display_mode_from_cea_vic() is not freed, which cause the memory leak:
unreferenced object 0xffffff80ccd18100 (size 128):
comm "kunit_try_catch", pid 1851, jiffies 4295059695
hex dump (first 32 bytes):
57 62 00 00 80 02 90 02 f0 02 20 03 00 00 e0 01 Wb........ .....
ea 01 ec 01 0d 02 00 00 0a 00 00 00 00 00 00 00 ................
backtrace (crc c2f1aa95):
[<000000000f10b11b>] kmemleak_alloc+0x34/0x40
[<000000001cd4cf73>] __kmalloc_cache_noprof+0x26c/0x2f4
[<00000000f1f3cffa>] drm_mode_duplicate+0x44/0x19c
[<000000008cbeef13>] drm_display_mode_from_cea_vic+0x88/0x98
[<0000000019daaacf>] 0xffffffedc11ae69c
[<000000000aad0f85>] kunit_try_run_case+0x13c/0x3ac
[<00000000a9210bac>] kunit_generic_run_threadfn_adapter+0x80/0xec
[<000000000a0b2e9e>] kthread+0x2e8/0x374
[<00000000bd668858>] ret_from_fork+0x10/0x20
......
Free `mode` by using drm_kunit_display_mode_from_cea_vic()
to fix it.
Cc: stable@vger.kernel.org
Fixes:
|
||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| 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 reStructuredText 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.