commit aba8205be0707b9d108e32254e186ba88107a869
author Kevin Wolf <kwolf@redhat.com> Thu Feb 03 15:05:33 2022 +0100
committer Kevin Wolf <kwolf@redhat.com> Fri Feb 11 09:44:16 2022 +0100
tree 8bf1266a5df2ac9e32eb8facf5e98da779bd5bcc
parent 0a301624c2f4ced3331ffd5bce85b4274fe132af

block: Lock AioContext for drain_end in blockdev-reopen

bdrv_subtree_drained_end() requires the caller to hold the AioContext
lock for the drained node. Not doing this for nodes outside of the main
AioContext leads to crashes when AIO_WAIT_WHILE() needs to wait and
tries to temporarily release the lock.

Fixes: 3908b7a8994fa5ef7a89aa58cd5a02fc58141592
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2046659
Reported-by: Qing Wang <qinwang@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20220203140534.36522-2-kwolf@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>