redonkable/alistair23-linux
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alistair23-linux/tools/testing/radix-tree
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Matthew Wilcox 4b0ad07653 idr: Fix handling of IDs above INT_MAX 
Khalid reported that the kernel selftests are currently failing:

selftests: test_bpf.sh
========================================
test_bpf: [FAIL]
not ok 1..8 selftests:  test_bpf.sh [FAIL]

He bisected it to 6ce711f275 ("idr: Make
1-based IDRs more efficient").

The root cause is doing a signed comparison in idr_alloc_u32() instead
of an unsigned comparison.  I went looking for any similar problems and
found a couple (which would each result in the failure to warn in two
situations that aren't supposed to happen).

I knocked up a few test-cases to prove that I was right and added them
to the test-suite.

Reported-by: Khalid Aziz <khalid.aziz@oracle.com>
Tested-by: Khalid Aziz <khalid.aziz@oracle.com>
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2018-02-26 14:39:30 -05:00
..
generated radix tree test suite: Remove obsolete CONFIG 2017-02-13 16:09:43 -05:00
linux radix tree test suite: Fix build 2018-02-25 06:00:11 -05:00
.gitignore radix tree test suite: Add config option for map shift 2017-02-13 21:44:10 -05:00
benchmark.c radix tree test suite: Add performance test for radix_tree_join() 2017-03-07 13:18:21 -05:00
idr-test.c idr: Fix handling of IDs above INT_MAX 2018-02-26 14:39:30 -05:00
iteration_check.c radix tree test suite: Dial down verbosity with -v 2017-02-13 21:44:04 -05:00
linux.c radix tree test suite: Fix build 2018-02-25 06:00:11 -05:00
main.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
multiorder.c mm, truncate: do not check mapping for every page being truncated 2017-11-15 18:21:06 -08:00
regression.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
regression1.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
regression2.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
regression3.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tag_check.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
test.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
test.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00