[LTP] ❌ FAIL: Test report for kernel 5.4.0-rc2-d6c2c23.cki (stable-next)

[Jan Stancek]

----- Original Message -----
> 
> Hello,
> 
> We ran automated tests on a recent commit from this kernel tree:
> 
>        Kernel repo:
>        git://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git
>             Commit: d6c2c23a29f4 - Merge branch 'stable-next' of
>             ssh://chubbybox:/home/sasha/data/next into stable-next
> 
> The results of these automated tests are provided below.
> 
>     Overall result: FAILED (see details below)
>              Merge: OK
>            Compile: OK
>              Tests: FAILED
> 
> All kernel binaries, config files, and logs are available for download here:
> 
>   https://artifacts.cki-project.org/pipelines/223563
> 
> One or more kernel tests failed:
> 
>     aarch64:
>       ❌ LTP: openposix test suite
> 

Test [1] is passing value close to LONG_MAX, which on arm64 is now treated as tagged userspace ptr:
  057d3389108e ("mm: untag user pointers passed to memory syscalls")

And now seems to hit overflow check after sign extension (EINVAL).
Test should probably find different way to choose invalid pointer.

[1] https://github.com/linux-test-project/ltp/blob/master/testcases/open_posix_testsuite/conformance/interfaces/mlock/8-1.c