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| Filename | Latest commit message | Latest commit date |
|---|---|---|
327f33e54c
commit a70ed0f2e6262e723ae8d70accb984ba309eacc2 upstream.
Each user context is allocated a certain number of RcvArray (TID)
entries and these entries are managed through TID groups. These groups
are put into one of three lists in each user context: tid_group_list,
tid_used_list, and tid_full_list, depending on the number of used TID
entries within each group. When TID packets are expected, one or more
TID groups will be allocated. After the packets are received, the TID
groups will be freed. Since multiple user threads may access the TID
groups simultaneously, a mutex exp_mutex is used to synchronize the
access. However, when the user file is closed, it tries to release
all TID groups without acquiring the mutex first, which risks a race
condition with another thread that may be releasing its TID groups,
leading to data corruption.
This patch addresses the issue by acquiring the mutex first before
releasing the TID groups when the file is closed.
Fixes:
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| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
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| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
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| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
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| 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.