From: Cornelia Huck <cohuck@redhat.com>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: Cornelia Huck <cohuck@redhat.com>,
qemu-s390x@nongnu.org, David Hildenbrand <david@redhat.com>,
qemu-devel@nongnu.org, Ilya Leoshkevich <iii@linux.ibm.com>
Subject: [PULL v2 4/9] accel/tcg: Assert that tb->size != 0 after translation
Date: Thu, 20 May 2021 19:05:14 +0200 [thread overview]
Message-ID: <20210520170519.300951-5-cohuck@redhat.com> (raw)
In-Reply-To: <20210520170519.300951-1-cohuck@redhat.com>
From: Ilya Leoshkevich <iii@linux.ibm.com>
If arch-specific code generates a translation block of size 0,
tb_gen_code() may generate a spurious exception. Add an assertion in
order to catch such situations early.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210416154939.32404-5-iii@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
---
accel/tcg/translate-all.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c
index fbf8fc630b27..640ff6e3e706 100644
--- a/accel/tcg/translate-all.c
+++ b/accel/tcg/translate-all.c
@@ -1912,6 +1912,7 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
tcg_ctx->cpu = env_cpu(env);
gen_intermediate_code(cpu, tb, max_insns);
+ assert(tb->size != 0);
tcg_ctx->cpu = NULL;
max_insns = tb->icount;
--
2.31.1
next prev parent reply other threads:[~2021-05-20 17:07 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-20 17:05 [PULL v2 0/9] s390x update Cornelia Huck
2021-05-20 17:05 ` [PULL v2 1/9] target/s390x: Fix translation exception on illegal instruction Cornelia Huck
2021-05-20 17:05 ` [PULL v2 2/9] target/arm: Make sure that commpage's tb->size != 0 Cornelia Huck
2021-05-20 17:05 ` [PULL v2 3/9] target/xtensa: Make sure that " Cornelia Huck
2021-05-20 17:05 ` Cornelia Huck [this message]
2021-05-20 17:05 ` [PULL v2 5/9] vfio-ccw: Permit missing IRQs Cornelia Huck
2021-05-20 17:05 ` [PULL v2 6/9] hw/s390x/ccw: Register qbus type in abstract TYPE_CCW_DEVICE parent Cornelia Huck
2021-05-20 17:05 ` [PULL v2 7/9] vfio-ccw: Attempt to clean up all IRQs on error Cornelia Huck
2021-05-20 17:05 ` [PULL v2 8/9] target/i386: Make sure that vsyscall's tb->size != 0 Cornelia Huck
2021-05-20 17:05 ` [PULL v2 9/9] tests/tcg/x86_64: add vsyscall smoke test Cornelia Huck
2021-05-20 19:11 ` [PULL v2 0/9] s390x update Peter Maydell
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