| commit | cfd4e36352d4426221aa94da44a172da1aaa741b | |
| author | Maxim Levitsky <mlevitsk@redhat.com> | |
| Thu, 10 Dec 2020 12:59:29 +0000 (10 14:59 +0200) | ||
| committer | Paolo Bonzini <pbonzini@redhat.com> | |
| Tue, 15 Dec 2020 17:52:04 +0000 (15 12:52 -0500) | ||
| tree | 882248de2cf2c5dda57f34a8818d19470e076965 | treesnapshot (tar.gz zip) |
| parent | 835cbd8d44b62217b8774b39e1bfd314750c2c51 | commitdiff |
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>
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>
| hw/scsi/scsi-bus.c | diffblobblamehistory |