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From: Cornelia Huck <cohuck@redhat.com>
To: Ilya Leoshkevich <iii@linux.ibm.com>,
	Richard Henderson <richard.henderson@linaro.org>,
	David Hildenbrand <david@redhat.com>,
	Laurent Vivier <laurent@vivier.eu>
Cc: "jonathan . albrecht" <jonathan.albrecht@linux.vnet.ibm.com>,
	Ilya Leoshkevich <iii@linux.ibm.com>,
	Ulrich Weigand <ulrich.weigand@de.ibm.com>,
	qemu-devel@nongnu.org,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	qemu-s390x@nongnu.org, Andreas Krebbel <krebbel@linux.ibm.com>
Subject: Re: [PATCH v5 0/2] target/s390x: Fix SIGILL/SIGFPE/SIGTRAP psw.addr reporting
Date: Fri, 02 Jul 2021 12:34:21 +0200	[thread overview]
Message-ID: <87a6n5j976.fsf@redhat.com> (raw)
In-Reply-To: <20210623023250.3667563-1-iii@linux.ibm.com>

On Wed, Jun 23 2021, Ilya Leoshkevich <iii@linux.ibm.com> wrote:

> qemu-s390x puts a wrong value into SIGILL's siginfo_t's psw.addr: it
> should be a pointer to the instruction following the illegal
> instruction, but at the moment it is a pointer to the illegal
> instruction itself. This breaks OpenJDK, which relies on this value.
> A similar problem exists for SIGFPE and SIGTRAP.
>
> Patch 1 fixes the issue, patch 2 adds a test.
>
> v1: https://lists.nongnu.org/archive/html/qemu-devel/2021-05/msg06592.html
> v1 -> v2: Use a better buglink (Cornelia), simplify the inline asm
>           magic in the test and add an explanation (David).
>
> v2: https://lists.nongnu.org/archive/html/qemu-devel/2021-05/msg06649.html
> v2 -> v3: Fix SIGSEGV handling (found when trying to run valgrind under
>           qemu-user).
>
> v3: https://lists.nongnu.org/archive/html/qemu-devel/2021-06/msg00299.html
> v3 -> v4: Fix compiling the test on Ubuntu 20.04 (Jonathan).
>
> v4: https://lists.nongnu.org/archive/html/qemu-devel/2021-06/msg05848.html
> v4 -> v5: Greatly simplify the fix (Ulrich).
>
> Note: the compare-and-trap SIGFPE issue is being fixed separately.
> https://lists.nongnu.org/archive/html/qemu-devel/2021-06/msg05690.html
>
> Ilya Leoshkevich (2):
>   target/s390x: Fix SIGILL/SIGFPE/SIGTRAP psw.addr reporting
>   tests/tcg/s390x: Test SIGILL and SIGSEGV handling
>
>  linux-user/s390x/cpu_loop.c     |   5 +
>  tests/tcg/s390x/Makefile.target |   1 +
>  tests/tcg/s390x/signal.c        | 165 ++++++++++++++++++++++++++++++++
>  3 files changed, 171 insertions(+)
>  create mode 100644 tests/tcg/s390x/signal.c

What's the status of this and
<20210621141452.2045-1-jonathan.albrecht@linux.vnet.ibm.com>? linux-user
is not really my turf, but it would be sad if this fell through the
cracks.



  parent reply	other threads:[~2021-07-02 10:36 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-23  2:32 [PATCH v5 0/2] target/s390x: Fix SIGILL/SIGFPE/SIGTRAP psw.addr reporting Ilya Leoshkevich
2021-06-23  2:32 ` [PATCH v5 1/2] " Ilya Leoshkevich
2021-07-05  9:36   ` David Hildenbrand
2021-07-05 17:24     ` Ilya Leoshkevich
2021-07-05 19:18       ` David Hildenbrand
2021-07-05 20:19         ` Ilya Leoshkevich
2021-07-06  9:15           ` Ulrich Weigand
2021-06-23  2:32 ` [PATCH v5 2/2] tests/tcg/s390x: Test SIGILL and SIGSEGV handling Ilya Leoshkevich
2021-06-23  2:42 ` [PATCH v5 0/2] target/s390x: Fix SIGILL/SIGFPE/SIGTRAP psw.addr reporting no-reply
2021-07-02 10:34 ` Cornelia Huck [this message]
2021-07-02 12:01   ` Laurent Vivier
2021-07-02 21:00     ` Ulrich Weigand
2021-07-05  9:27     ` Cornelia Huck
2021-07-12 14:59     ` jonathan.albrecht
2021-07-12 21:22       ` Ilya Leoshkevich

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