From: Dave Martin <Dave.Martin@arm.com> To: Cristian Marussi <cristian.marussi@arm.com> Cc: linux-kselftest@vger.kernel.org, linux-arm-kernel@lists.infradead.org, shuah@kernel.org, amit.kachhap@arm.com, andreyknvl@google.com Subject: Re: [PATCH v5 03/11] kselftest: arm64: mangle_pstate_invalid_daif_bits Date: Wed, 4 Sep 2019 12:48:03 +0100 [thread overview] Message-ID: <20190904114803.GT27757@arm.com> (raw) In-Reply-To: <20190902112932.36129-4-cristian.marussi@arm.com> On Mon, Sep 02, 2019 at 12:29:24pm +0100, Cristian Marussi wrote: > Add a simple mangle testcase which messes with the ucontext_t from within > the signal handler, trying to set PSTATE DAIF bits to an invalid value > (masking everything). Expects SIGSEGV on test PASS. > > Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Reviewed-by: Dave Martin <Dave.Martin@arm.com> > --- > v3 --> v4 > - fixed commit message > - added testcase comment description > --- > .../mangle_pstate_invalid_daif_bits.c | 35 +++++++++++++++++++ > 1 file changed, 35 insertions(+) > create mode 100644 tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_daif_bits.c > > diff --git a/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_daif_bits.c b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_daif_bits.c > new file mode 100644 > index 000000000000..434b82597007 > --- /dev/null > +++ b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_daif_bits.c > @@ -0,0 +1,35 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (C) 2019 ARM Limited > + * > + * Try to mangle the ucontext from inside a signal handler, mangling the > + * DAIF bits in an illegal manner: this attempt must be spotted by Kernel > + * and the test case is expected to be terminated via SEGV. > + * > + */ > + > +#include "test_signals_utils.h" > +#include "testcases.h" > + > +static int mangle_invalid_pstate_run(struct tdescr *td, siginfo_t *si, > + ucontext_t *uc) > +{ > + ASSERT_GOOD_CONTEXT(uc); > + > + /* > + * This config should trigger a SIGSEGV by Kernel when it checks > + * the sigframe consistency in valid_user_regs() routine. > + */ > + uc->uc_mcontext.pstate |= PSR_D_BIT | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT; > + > + return 1; > +} > + > +struct tdescr tde = { > + .sanity_disabled = true, > + .name = "MANGLE_PSTATE_INVALID_DAIF_BITS", > + .descr = "Mangling uc_mcontext with INVALID DAIF_BITS", > + .sig_trig = SIGUSR1, > + .sig_ok = SIGSEGV, > + .run = mangle_invalid_pstate_run, > +}; > -- > 2.17.1 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: Dave Martin <Dave.Martin@arm.com> To: Cristian Marussi <cristian.marussi@arm.com> Cc: amit.kachhap@arm.com, andreyknvl@google.com, shuah@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH v5 03/11] kselftest: arm64: mangle_pstate_invalid_daif_bits Date: Wed, 4 Sep 2019 12:48:03 +0100 [thread overview] Message-ID: <20190904114803.GT27757@arm.com> (raw) In-Reply-To: <20190902112932.36129-4-cristian.marussi@arm.com> On Mon, Sep 02, 2019 at 12:29:24pm +0100, Cristian Marussi wrote: > Add a simple mangle testcase which messes with the ucontext_t from within > the signal handler, trying to set PSTATE DAIF bits to an invalid value > (masking everything). Expects SIGSEGV on test PASS. > > Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Reviewed-by: Dave Martin <Dave.Martin@arm.com> > --- > v3 --> v4 > - fixed commit message > - added testcase comment description > --- > .../mangle_pstate_invalid_daif_bits.c | 35 +++++++++++++++++++ > 1 file changed, 35 insertions(+) > create mode 100644 tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_daif_bits.c > > diff --git a/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_daif_bits.c b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_daif_bits.c > new file mode 100644 > index 000000000000..434b82597007 > --- /dev/null > +++ b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_daif_bits.c > @@ -0,0 +1,35 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (C) 2019 ARM Limited > + * > + * Try to mangle the ucontext from inside a signal handler, mangling the > + * DAIF bits in an illegal manner: this attempt must be spotted by Kernel > + * and the test case is expected to be terminated via SEGV. > + * > + */ > + > +#include "test_signals_utils.h" > +#include "testcases.h" > + > +static int mangle_invalid_pstate_run(struct tdescr *td, siginfo_t *si, > + ucontext_t *uc) > +{ > + ASSERT_GOOD_CONTEXT(uc); > + > + /* > + * This config should trigger a SIGSEGV by Kernel when it checks > + * the sigframe consistency in valid_user_regs() routine. > + */ > + uc->uc_mcontext.pstate |= PSR_D_BIT | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT; > + > + return 1; > +} > + > +struct tdescr tde = { > + .sanity_disabled = true, > + .name = "MANGLE_PSTATE_INVALID_DAIF_BITS", > + .descr = "Mangling uc_mcontext with INVALID DAIF_BITS", > + .sig_trig = SIGUSR1, > + .sig_ok = SIGSEGV, > + .run = mangle_invalid_pstate_run, > +}; > -- > 2.17.1 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-09-04 11:48 UTC|newest] Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-09-02 11:29 [PATCH v5 00/11] Add arm64/signal initial kselftest support Cristian Marussi 2019-09-02 11:29 ` Cristian Marussi 2019-09-02 11:29 ` [PATCH v5 01/11] kselftest: arm64: add skeleton Makefile Cristian Marussi 2019-09-02 11:29 ` Cristian Marussi 2019-09-03 9:26 ` Amit Kachhap 2019-09-03 9:26 ` Amit Kachhap 2019-09-03 9:45 ` Cristian Marussi 2019-09-03 9:45 ` Cristian Marussi 2019-09-05 17:57 ` Cristian Marussi 2019-09-05 17:57 ` Cristian Marussi 2019-09-09 12:42 ` Amit Kachhap 2019-09-09 12:42 ` Amit Kachhap 2019-09-16 11:41 ` Dave Martin 2019-09-16 11:41 ` Dave Martin 2019-09-04 11:47 ` Dave Martin 2019-09-04 11:47 ` Dave Martin 2019-09-05 13:45 ` Cristian Marussi 2019-09-05 13:45 ` Cristian Marussi 2019-09-05 14:18 ` Dave Martin 2019-09-05 14:18 ` Dave Martin 2019-09-02 11:29 ` [PATCH v5 02/11] kselftest: arm64: add common utils and one testcase Cristian Marussi 2019-09-02 11:29 ` Cristian Marussi 2019-09-04 11:47 ` Dave Martin 2019-09-04 11:47 ` Dave Martin 2019-09-06 10:26 ` Cristian Marussi 2019-09-06 10:26 ` Cristian Marussi 2019-09-16 11:40 ` Dave Martin 2019-09-16 11:40 ` Dave Martin 2019-09-02 11:29 ` [PATCH v5 03/11] kselftest: arm64: mangle_pstate_invalid_daif_bits Cristian Marussi 2019-09-02 11:29 ` Cristian Marussi 2019-09-04 11:48 ` Dave Martin [this message] 2019-09-04 11:48 ` Dave Martin 2019-09-02 11:29 ` [PATCH v5 04/11] kselftest: arm64: mangle_pstate_invalid_mode_el[123][ht] Cristian Marussi 2019-09-02 11:29 ` Cristian Marussi 2019-09-04 11:48 ` Dave Martin 2019-09-04 11:48 ` Dave Martin 2019-09-02 11:29 ` [PATCH v5 05/11] kselftest: arm64: mangle_pstate_ssbs_regs Cristian Marussi 2019-09-02 11:29 ` Cristian Marussi 2019-09-04 11:48 ` Dave Martin 2019-09-04 11:48 ` Dave Martin 2019-09-09 15:51 ` Cristian Marussi 2019-09-09 15:51 ` Cristian Marussi 2019-09-02 11:29 ` [PATCH v5 06/11] kselftest: arm64: fake_sigreturn_bad_magic Cristian Marussi 2019-09-02 11:29 ` Cristian Marussi 2019-09-04 11:48 ` Dave Martin 2019-09-04 11:48 ` Dave Martin 2019-09-09 17:31 ` Cristian Marussi 2019-09-09 17:31 ` Cristian Marussi 2019-09-02 11:29 ` [PATCH v5 07/11] kselftest: arm64: fake_sigreturn_bad_size_for_magic0 Cristian Marussi 2019-09-02 11:29 ` Cristian Marussi 2019-09-04 11:49 ` Dave Martin 2019-09-04 11:49 ` Dave Martin 2019-09-09 17:47 ` Cristian Marussi 2019-09-09 17:47 ` Cristian Marussi 2019-09-02 11:29 ` [PATCH v5 08/11] kselftest: arm64: fake_sigreturn_missing_fpsimd Cristian Marussi 2019-09-02 11:29 ` Cristian Marussi 2019-09-04 11:49 ` Dave Martin 2019-09-04 11:49 ` Dave Martin 2019-09-09 17:51 ` Cristian Marussi 2019-09-09 17:51 ` Cristian Marussi 2019-09-02 11:29 ` [PATCH v5 09/11] kselftest: arm64: fake_sigreturn_duplicated_fpsimd Cristian Marussi 2019-09-02 11:29 ` Cristian Marussi 2019-09-04 11:49 ` Dave Martin 2019-09-04 11:49 ` Dave Martin 2019-09-05 12:15 ` Cristian Marussi 2019-09-05 12:15 ` Cristian Marussi 2019-09-05 12:39 ` Dave Martin 2019-09-05 12:39 ` Dave Martin 2019-09-05 13:32 ` Cristian Marussi 2019-09-05 13:32 ` Cristian Marussi 2019-09-05 14:20 ` Dave Martin 2019-09-05 14:20 ` Dave Martin 2019-09-09 18:03 ` Cristian Marussi 2019-09-09 18:03 ` Cristian Marussi 2019-09-02 11:29 ` [PATCH v5 10/11] kselftest: arm64: fake_sigreturn_bad_size Cristian Marussi 2019-09-02 11:29 ` Cristian Marussi 2019-09-04 11:49 ` Dave Martin 2019-09-04 11:49 ` Dave Martin 2019-09-09 18:11 ` Cristian Marussi 2019-09-09 18:11 ` Cristian Marussi 2019-09-02 11:29 ` [PATCH v5 11/11] kselftest: arm64: fake_sigreturn_misaligned_sp Cristian Marussi 2019-09-02 11:29 ` Cristian Marussi 2019-09-04 11:49 ` Dave Martin 2019-09-04 11:49 ` Dave Martin 2019-09-09 18:32 ` Cristian Marussi 2019-09-09 18:32 ` Cristian Marussi 2019-09-04 11:47 ` [PATCH v5 00/11] Add arm64/signal initial kselftest support Dave Martin 2019-09-04 11:47 ` Dave Martin 2019-09-10 12:25 ` Cristian Marussi 2019-09-10 12:25 ` Cristian Marussi 2019-09-16 12:14 ` Dave Martin 2019-09-16 12:14 ` Dave Martin
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