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[Qemu-devel] [PATCH v4 0/2] move qcow2_invalidate_cache() out of corouti


From: Denis V. Lunev
Subject: [Qemu-devel] [PATCH v4 0/2] move qcow2_invalidate_cache() out of coroutine context
Date: Wed, 24 Feb 2016 11:53:37 +0300

There is a possibility to hit an assert in qcow2_get_specific_info that
s->qcow_version is undefined. This happens when VM in starting from
suspended state, i.e. it processes incoming migration, and in the same
time 'info block' is called.

The problem is that qcow2_invalidate_cache() closes the image and
memset()s BDRVQcowState in the middle.

This operation should not be performed in coroutine context.

Changes from v3:
- added qemu_bh_delete at the end of BH to free allocated structure.
  Thanks to Fam.

Changes from v2:
- subject lines in patches

Changes from v1:
- fixed spelling. Eric, thank you for spell checking

Signed-off-by: Denis V. Lunev <address@hidden>
CC: Paolo Bonzini <address@hidden>
CC: Juan Quintela <address@hidden>
CC: Amit Shah <address@hidden>




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