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f779ac0b87
A previous consolidated the ring size etc calculations into
io_prepare_config(), but missed updating io_register_resize_rings()
correctly to use the calculated values. As a result, it ended up using
on-stack uninitialized values, and hence either failed validating the
size correctly, or just failed resizing because the sizes were random.
This caused failures in the liburing regression tests:
[...]
Running test resize-rings.t
resize=-7
test_basic 3000 failed
Test resize-rings.t failed with ret 1
Running test resize-rings.t /dev/sda
resize=-7
test_basic 3000 failed
Test resize-rings.t failed with ret 1
Running test resize-rings.t /dev/nvme1n1
resize=-7
test_basic 3000 failed
Test resize-rings.t failed with ret 1
Running test resize-rings.t /dev/dm-0
resize=-7
test_basic 3000 failed
Test resize-rings.t failed with ret 1
because io_create_region() would return -E2BIG because of unintialized
reg->size values.
Adjust the struct io_rings_layout rl pointer to point to the correct
location, and remove the (now dead) __rl on stack struct.
Fixes:
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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.