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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-24 11:12:17 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-24 11:12:17 -0700 |
| commit | 1b7eaf570140281a1aa898a875aa587d48d96958 (patch) | |
| tree | fd5f02656e9975bd5cfe5a2288d4ae034030cf6a /tools | |
| parent | 4c4f0c2bf3415a5fe7512d17d841bc1f8020b2cb (diff) | |
| parent | 22b70e6f2da0a4c8b1421b00cfc3016bc9d4d9d4 (diff) | |
| download | linux-1b7eaf570140281a1aa898a875aa587d48d96958.tar.bz2 | |
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- It turns out that the optimised string routines merged in 5.14 are
not safe with in-kernel MTE (KASAN_HW_TAGS) because of reading beyond
the end of a string (strcmp, strncmp). Such reading may go across a
16 byte tag granule and cause a tag check fault. When KASAN_HW_TAGS
is enabled, use the generic strcmp/strncmp C implementation.
- An errata workaround for ThunderX relied on the CPU capabilities
being enabled in a specific order. This disappeared with the
automatic generation of the cpucaps.h file (sorted alphabetically).
Fix it by checking the current CPU only rather than the system-wide
capability.
- Add system_supports_mte() checks on the kernel entry/exit path and
thread switching to avoid unnecessary barriers and function calls on
systems where MTE is not supported.
- kselftests: skip arm64 tests if the required features are missing.
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Restore forced disabling of KPTI on ThunderX
kselftest/arm64: signal: Skip tests if required features are missing
arm64: Mitigate MTE issues with str{n}cmp()
arm64: add MTE supported check to thread switching and syscall entry/exit
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/arm64/signal/test_signals_utils.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/tools/testing/selftests/arm64/signal/test_signals_utils.c b/tools/testing/selftests/arm64/signal/test_signals_utils.c index 6836510a522f..22722abc9dfa 100644 --- a/tools/testing/selftests/arm64/signal/test_signals_utils.c +++ b/tools/testing/selftests/arm64/signal/test_signals_utils.c @@ -266,16 +266,19 @@ int test_init(struct tdescr *td) td->feats_supported |= FEAT_SSBS; if (getauxval(AT_HWCAP) & HWCAP_SVE) td->feats_supported |= FEAT_SVE; - if (feats_ok(td)) + if (feats_ok(td)) { fprintf(stderr, "Required Features: [%s] supported\n", feats_to_string(td->feats_required & td->feats_supported)); - else + } else { fprintf(stderr, "Required Features: [%s] NOT supported\n", feats_to_string(td->feats_required & ~td->feats_supported)); + td->result = KSFT_SKIP; + return 0; + } } /* Perform test specific additional initialization */ |