*** This bug is a duplicate of bug 1829994 ***
https://bugs.launchpad.net/bugs/1829994
Hello,
This issue can be reproduced in 4.15 AMD64 generic kernels as well.
I have looked into the test case, this failure can be divided into 2 parts, the
first one occurs on the fifth test case:
Test Case 5: register_blkdev() with major=512/4294967295
Which will try to set the major number with 512 and UINT_MAX, however
the major number has been limited to 511 in Bionic (BLKDEV_MAJOR_MAX -
1, commit 133d55c upstream), this operation is expected to fail.
So it's normal to see this failure:
register_blkdev: major requested (512) is greater than the maximum (512)
for ltp_block_dev
For the kernel warning, it's caused by the seventh test case:
Test Case 7: unregister_blkdev() with major=0
It will first try to allocate any unused major number by passing
major=0, and then try to unregister it with major=0 again. This is
expected to fail and generates warnings as the module used here is an
out-of-tree one.
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https://bugs.launchpad.net/bugs/1852294
Title:
Ubuntu18.04.3 - LTP testcase gets stacktrace running 'kernel:
ltp_block_dev: Test Case 7: unregister_blkdev() with major=0'
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