| commit | 9b21049edd3c352efc615e030cd8e931e0c6f910 | |
| author | Ilya Leoshkevich <iii@linux.ibm.com> | |
| Wed, 19 May 2021 04:57:37 +0000 (19 06:57 +0200) | ||
| committer | Cornelia Huck <cohuck@redhat.com> | |
| Thu, 20 May 2021 12:19:30 +0000 (20 14:19 +0200) | ||
| tree | c63ae75ce402fab46749b21656196b0c098a7e1e | treesnapshot (tar.gz zip) |
| parent | dcc9cf3801039741b7a574b5035db283a7fed271 | commitdiff |
target/i386: Make sure that vsyscall's tb->size != 0
tb_gen_code() assumes that tb->size must never be zero, otherwise it
may produce spurious exceptions. For x86_64 this may happen when
creating a translation block for the vsyscall page.
Fix by pretending that vsyscall translation blocks have at least one
instruction.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210519045738.1335210-2-iii@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
tb_gen_code() assumes that tb->size must never be zero, otherwise it
may produce spurious exceptions. For x86_64 this may happen when
creating a translation block for the vsyscall page.
Fix by pretending that vsyscall translation blocks have at least one
instruction.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210519045738.1335210-2-iii@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
| target/i386/tcg/translate.c | diffblobblamehistory |