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>
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 v3 0/3] accel/tcg: Make sure that tb->size != 0 after translation
Date: Wed, 14 Apr 2021 15:41:09 +0200 [thread overview]
Message-ID: <20210414134112.25620-1-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) and ARM (patch 2) and add an assertion in order to
catch such situations early (patch 3).
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
Ilya Leoshkevich (3):
target/s390x: Fix translation exception on illegal instruction
target/arm: Make sure that commpage's 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 +++++++++++-----
3 files changed, 13 insertions(+), 5 deletions(-)
--
2.29.2
next reply other threads:[~2021-04-14 13:43 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-14 13:41 Ilya Leoshkevich [this message]
2021-04-14 13:41 ` [PATCH v3 1/3] target/s390x: Fix translation exception on illegal instruction Ilya Leoshkevich
2021-04-14 14:47 ` David Hildenbrand
2021-04-14 13:41 ` [PATCH v3 2/3] target/arm: Make sure that commpage's tb->size != 0 Ilya Leoshkevich
2021-04-14 13:41 ` [PATCH v3 3/3] accel/tcg: Assert that tb->size != 0 after translation Ilya Leoshkevich
2021-04-14 14:48 ` David Hildenbrand
2021-04-14 16:45 ` Ilya Leoshkevich
2021-04-14 18:03 ` Max Filippov
2021-04-14 19:43 ` Richard Henderson
2021-04-15 1:23 ` Max Filippov
2021-04-15 11:14 ` Ilya Leoshkevich
2021-04-15 14:33 ` Richard Henderson
2021-04-15 15:02 ` Peter Maydell
2021-04-15 20:20 ` Max Filippov
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