4b0ad07653
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 6ce711f2750031d12cec91384ac5cfa0a485b60a ("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>
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| .. | ||
| generated | ||
| linux | ||
| .gitignore | ||
| benchmark.c | ||
| idr-test.c | ||
| iteration_check.c | ||
| linux.c | ||
| main.c | ||
| Makefile | ||
| multiorder.c | ||
| regression1.c | ||
| regression2.c | ||
| regression3.c | ||
| regression.h | ||
| tag_check.c | ||
| test.c | ||
| test.h | ||