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Dawei Feng
5c477b7a20
commit816419dfeaupstream. In the e1000_probe() path, e1000_sw_init() allocates adapter->tx_ring and adapter->rx_ring. If the subsequent CE4100-specific MDIO BAR mapping fails, the error handling jumps past the ring cleanup code, leaking both allocations. Fix this leak by moving the err_mdio_ioremap label above the ring deallocation logic. This guarantees the proper release of these resources and prevents the memory leak. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1-rc6. An x86_64 allyesconfig build showed no new warnings. As we do not have a CE4100 reference platform to test with, no runtime testing was able to be performed. Fixes:5377a4160b("e1000: Add support for the CE4100 reference platform") Cc: stable@vger.kernel.org Signed-off-by: Zilin Guan <zilin@seu.edu.cn> Signed-off-by: Dawei Feng <dawei.feng@seu.edu.cn> Reviewed-by: Dima Ruinskiy <dima.ruinskiy@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.