From: Ilya Leoshkevich <iii@linux.ibm.com>
To: Richard Henderson <richard.henderson@linaro.org>,
David Hildenbrand <david@redhat.com>,
Laurent Vivier <laurent@vivier.eu>,
Cornelia Huck <cohuck@redhat.com>
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: [PATCH v5 0/2] target/s390x: Fix SIGILL/SIGFPE/SIGTRAP psw.addr reporting
Date: Wed, 23 Jun 2021 04:32:48 +0200 [thread overview]
Message-ID: <20210623023250.3667563-1-iii@linux.ibm.com> (raw)
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
--
2.31.1
next reply other threads:[~2021-06-23 2:35 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-23 2:32 Ilya Leoshkevich [this message]
2021-06-23 2:32 ` [PATCH v5 1/2] target/s390x: Fix SIGILL/SIGFPE/SIGTRAP psw.addr reporting 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
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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