From: Ilya Leoshkevich <iii@linux.ibm.com>
To: Cornelia Huck <cohuck@redhat.com>, Thomas Huth <thuth@redhat.com>,
Richard Henderson <richard.henderson@linaro.org>,
David Hildenbrand <david@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Peter Maydell <peter.maydell@linaro.org>,
Max Filippov <jcmvbkbc@gmail.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>,
qemu-s390x@nongnu.org, qemu-arm@nongnu.org,
qemu-devel@nongnu.org, Ilya Leoshkevich <iii@linux.ibm.com>
Subject: [PATCH v4 0/4] accel/tcg: Make sure that tb->size != 0 after translation
Date: Thu, 15 Apr 2021 15:03:01 +0200 [thread overview]
Message-ID: <20210415130305.28640-1-iii@linux.ibm.com> (raw)
If arch-specific code generates a translation block of size 0,
tb_gen_code() may generate a spurious exception.
Fix s390x (patch 1), ARM (patch 2) and xtensa (patch 3) and add an
assertion in order to catch such situations earlier (patch 4).
v1: https://lists.nongnu.org/archive/html/qemu-devel/2021-04/msg02037.html
v1 -> v2: Fix target/s390x instead of trying to tolerate tb->size == 0
in tb_gen_code().
v2: https://lists.nongnu.org/archive/html/qemu-devel/2021-04/msg02101.html
v2 -> v3: Split the common code change into a separate patch, add the
ARM patch in order to fix
https://gitlab.com/cohuck/qemu/-/jobs/1178409450
v3: https://lists.nongnu.org/archive/html/qemu-devel/2021-04/msg02332.html
v3 -> v4: Add the xtensa patch in order to fix
https://gitlab.com/cohuck/qemu/-/jobs/1178409540
Ilya Leoshkevich (4):
target/s390x: Fix translation exception on illegal instruction
target/arm: Make sure that commpage's tb->size != 0
target/xtensa: Make sure that tb->size != 0
accel/tcg: Assert that tb->size != 0 after translation
accel/tcg/translate-all.c | 1 +
target/arm/translate.c | 1 +
target/s390x/translate.c | 16 +++++++++++-----
target/xtensa/translate.c | 3 +++
4 files changed, 16 insertions(+), 5 deletions(-)
--
2.29.2
next reply other threads:[~2021-04-15 13:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-15 13:03 Ilya Leoshkevich [this message]
2021-04-15 13:03 ` [PATCH v4 1/4] target/s390x: Fix translation exception on illegal instruction Ilya Leoshkevich
2021-04-15 13:03 ` [PATCH v4 2/4] target/arm: Make sure that commpage's tb->size != 0 Ilya Leoshkevich
2021-04-16 14:10 ` Peter Maydell
2021-04-16 15:38 ` Ilya Leoshkevich
2021-04-15 13:03 ` [PATCH v4 3/4] target/xtensa: Make sure that " Ilya Leoshkevich
2021-04-15 20:14 ` Max Filippov
2021-04-15 13:03 ` [PATCH v4 4/4] accel/tcg: Assert that tb->size != 0 after translation Ilya Leoshkevich
2021-04-15 15:39 ` [PATCH v4 0/4] accel/tcg: Make sure " Cornelia Huck
2021-04-16 11:53 ` Ilya Leoshkevich
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