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authorMaxim Levitsky <mlevitsk@redhat.com>2020-12-10 14:59:29 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2020-12-15 12:52:04 -0500
commitcfd4e36352d4426221aa94da44a172da1aaa741b (patch)
tree882248de2cf2c5dda57f34a8818d19470e076965 /util/qemu-option.c
parent835cbd8d44b62217b8774b39e1bfd314750c2c51 (diff)
downloadfocaccia-qemu-cfd4e36352d4426221aa94da44a172da1aaa741b.tar.gz
focaccia-qemu-cfd4e36352d4426221aa94da44a172da1aaa741b.zip
scsi: fix device removal race vs IO restart callback on resume
There is (mostly theoretical) race between removal of a scsi device and
scsi_dma_restart_bh.

It used to be easier to hit this race prior to my / Paulo's patch series
that added rcu to scsi bus device handling code, but IMHO this race
should still be possible to hit, at least in theory.

Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1854811

Fix it anyway with a patch that was proposed by Paulo in the above bugzilla.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20201210125929.1136390-2-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'util/qemu-option.c')
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