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Fedor Pchelkin <pchelkin@ispras.ru> says: The patch series fixes a possible racy use-after-free scenario described in 2/2: if j1939_can_rx_register() fails then the concurrent thread may have already read the invalid priv structure. The 1/2 makes j1939_netdev_lock a mutex so that access to j1939_can_rx_register() can be serialized without changing GFP_KERNEL to GFP_ATOMIC inside can_rx_register(). This seems to be safe. Note that the patch series has been tested only via Syzkaller and not with a real device. Link: https://lore.kernel.org/r/20230526171910.227615-1-pchelkin@ispras.ru Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> |
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| certs | ||
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| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .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 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.