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kselftest/arm64: Allow larger buffers in get_signal_context()

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In order to allow testing of signal contexts that overflow the base signal
frame allow callers to pass the buffer size for the user context into
get_signal_context(). No functional change.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220829160703.874492-10-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Mark Brown 2022-08-29 17:07:02 +01:00 committed by Catalin Marinas
parent 2fa1116bb4
commit 38150a6204
14 changed files with 16 additions and 15 deletions
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5
tools/testing/selftests/arm64/signal/test_signals_utils.h
View File

@ -56,7 +56,8 @@ static inline bool feats_ok(struct tdescr *td)
* at sizeof(ucontext_t).
*/
static __always_inline bool get_current_context(struct tdescr *td,
ucontext_t *dest_uc)
ucontext_t *dest_uc,
size_t dest_sz)
{
static volatile bool seen_already;
@ -64,7 +65,7 @@ static __always_inline bool get_current_context(struct tdescr *td,
/* it's a genuine invocation..reinit */
seen_already = 0;
td->live_uc_valid = 0;
td->live_sz = sizeof(*dest_uc);
td->live_sz = dest_sz;
memset(dest_uc, 0x00, td->live_sz);
td->live_uc = dest_uc;
/*

2
tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_bad_magic.c
View File

@ -21,7 +21,7 @@ static int fake_sigreturn_bad_magic_run(struct tdescr *td,
struct _aarch64_ctx *shead = GET_SF_RESV_HEAD(sf), *head;
/* just to fill the ucontext_t with something real */
if (!get_current_context(td, &sf.uc))
if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
return 1;
/* need at least 2*HDR_SZ space: KSFT_BAD_MAGIC + terminator. */

2
tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_bad_size.c
View File

@ -24,7 +24,7 @@ static int fake_sigreturn_bad_size_run(struct tdescr *td,
struct _aarch64_ctx *shead = GET_SF_RESV_HEAD(sf), *head;
/* just to fill the ucontext_t with something real */
if (!get_current_context(td, &sf.uc))
if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
return 1;
resv_sz = GET_SF_RESV_SIZE(sf);

2
tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_bad_size_for_magic0.c
View File

@ -21,7 +21,7 @@ static int fake_sigreturn_bad_size_for_magic0_run(struct tdescr *td,
struct _aarch64_ctx *shead = GET_SF_RESV_HEAD(sf), *head;
/* just to fill the ucontext_t with something real */
if (!get_current_context(td, &sf.uc))
if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
return 1;
/* at least HDR_SZ for the badly sized terminator. */

2
tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_duplicated_fpsimd.c
View File

@ -21,7 +21,7 @@ static int fake_sigreturn_duplicated_fpsimd_run(struct tdescr *td,
struct _aarch64_ctx *shead = GET_SF_RESV_HEAD(sf), *head;
/* just to fill the ucontext_t with something real */
if (!get_current_context(td, &sf.uc))
if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
return 1;
head = get_starting_head(shead, sizeof(struct fpsimd_context) + HDR_SZ,

2
tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_misaligned_sp.c
View File

@ -19,7 +19,7 @@ static int fake_sigreturn_misaligned_run(struct tdescr *td,
siginfo_t *si, ucontext_t *uc)
{
/* just to fill the ucontext_t with something real */
if (!get_current_context(td, &sf.uc))
if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
return 1;
/* Forcing sigframe on misaligned SP (16 + 3) */

2
tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c
View File

@ -23,7 +23,7 @@ static int fake_sigreturn_missing_fpsimd_run(struct tdescr *td,
struct _aarch64_ctx *head = GET_SF_RESV_HEAD(sf);
/* just to fill the ucontext_t with something real */
if (!get_current_context(td, &sf.uc))
if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
return 1;
resv_sz = GET_SF_RESV_SIZE(sf);

2
tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_sme_change_vl.c
View File

@ -54,7 +54,7 @@ static int fake_sigreturn_ssve_change_vl(struct tdescr *td,
struct sve_context *sve;
/* Get a signal context with a SME ZA frame in it */
if (!get_current_context(td, &sf.uc))
if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
return 1;
resv_sz = GET_SF_RESV_SIZE(sf);

2
tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_sve_change_vl.c
View File

@ -56,7 +56,7 @@ static int fake_sigreturn_sve_change_vl(struct tdescr *td,
struct sve_context *sve;
/* Get a signal context with a SVE frame in it */
if (!get_current_context(td, &sf.uc))
if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
return 1;
resv_sz = GET_SF_RESV_SIZE(sf);

2
tools/testing/selftests/arm64/signal/testcases/sme_vl.c
View File

@ -34,7 +34,7 @@ static int sme_vl(struct tdescr *td, siginfo_t *si, ucontext_t *uc)
struct za_context *za;
/* Get a signal context which should have a ZA frame in it */
if (!get_current_context(td, &sf.uc))
if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
return 1;
resv_sz = GET_SF_RESV_SIZE(sf);

2
tools/testing/selftests/arm64/signal/testcases/ssve_regs.c
View File

@ -73,7 +73,7 @@ static int do_one_sme_vl(struct tdescr *td, siginfo_t *si, ucontext_t *uc,
* in it.
*/
setup_ssve_regs();
if (!get_current_context(td, &sf.uc))
if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
return 1;
resv_sz = GET_SF_RESV_SIZE(sf);

2
tools/testing/selftests/arm64/signal/testcases/sve_regs.c
View File

@ -71,7 +71,7 @@ static int do_one_sve_vl(struct tdescr *td, siginfo_t *si, ucontext_t *uc,
* in it.
*/
setup_sve_regs();
if (!get_current_context(td, &sf.uc))
if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
return 1;
resv_sz = GET_SF_RESV_SIZE(sf);

2
tools/testing/selftests/arm64/signal/testcases/sve_vl.c
View File

@ -34,7 +34,7 @@ static int sve_vl(struct tdescr *td, siginfo_t *si, ucontext_t *uc)
struct sve_context *sve;
/* Get a signal context which should have a SVE frame in it */
if (!get_current_context(td, &sf.uc))
if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
return 1;
resv_sz = GET_SF_RESV_SIZE(sf);

2
tools/testing/selftests/arm64/signal/testcases/za_regs.c
View File

@ -73,7 +73,7 @@ static int do_one_sme_vl(struct tdescr *td, siginfo_t *si, ucontext_t *uc,
* in it.
*/
setup_za_regs();
if (!get_current_context(td, &sf.uc))
if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
return 1;
resv_sz = GET_SF_RESV_SIZE(sf);