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authorPaolo Bonzini <pbonzini@redhat.com>2016-09-30 22:30:56 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2016-10-04 10:00:26 +0200
commitf96a8cc3c633b25d9269337408ae2417ebbbad8e (patch)
tree8d2f8fc029d7d988529bc0a4a2049d46b98cc045 /qom/object.c
parent550276ae0a88851edda2cb7fcdd64256dbb8e314 (diff)
downloadfocaccia-qemu-f96a8cc3c633b25d9269337408ae2417ebbbad8e.tar.gz
focaccia-qemu-f96a8cc3c633b25d9269337408ae2417ebbbad8e.zip
seqlock: use atomic writes for the sequence
There is a data race if the sequence is written concurrently to the
read.  In C11 this has undefined behavior.  Use atomic_set; the
read side is already using atomic_read.

Reported-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20160930213106.20186-6-alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'qom/object.c')
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