diff mbox series

[v1,04/10] kselftest/arm64: Fix validation of EXTRA_CONTEXT signal context location

Message ID 20220815133236.235464-5-broonie@kernel.org
State Accepted
Commit b721c8237fe39a0e3b653f47add3156f7cdccef2
Headers show
Series [v1,01/10] kselftest/arm64: Enumerate SME rather than SVE vector lengths for za_regs | expand

Commit Message

Mark Brown Aug. 15, 2022, 1:32 p.m. UTC
Currently in validate_extra_context() we assert both that the extra data
pointed to by the EXTRA_CONTEXT is 16 byte aligned and that it immediately
follows the struct _aarch64_ctx providing the terminator for the linked
list of contexts in the signal frame. Since struct _aarch64_ctx is an 8
byte structure which must be 16 byte aligned these cannot both be true. As
documented in sigcontext.h and implemented by the kernel the extra data
should be at the next 16 byte aligned address after the terminator so fix
the validation to match.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 tools/testing/selftests/arm64/signal/testcases/testcases.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/arm64/signal/testcases/testcases.c b/tools/testing/selftests/arm64/signal/testcases/testcases.c
index d98828cb542b..16dc916939f9 100644
--- a/tools/testing/selftests/arm64/signal/testcases/testcases.c
+++ b/tools/testing/selftests/arm64/signal/testcases/testcases.c
@@ -42,7 +42,7 @@  bool validate_extra_context(struct extra_context *extra, char **err)
 		*err = "Extra DATAP misaligned";
 	else if (extra->size & 0x0fUL)
 		*err = "Extra SIZE misaligned";
-	else if (extra->datap != (uint64_t)term + sizeof(*term))
+	else if (extra->datap != (uint64_t)term + 0x10UL)
 		*err = "Extra DATAP misplaced (not contiguous)";
 	if (*err)
 		return false;