[Bugs] [Bug 1557876] Fuse mount crashed with only one VM running with its image on that volume

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1557876



--- Comment #4 from Worker Ant <bugzilla-bot at gluster.org> ---
COMMIT: https://review.gluster.org/19737 committed in master by "Pranith Kumar
Karampuri" <pkarampu at redhat.com> with a commit message- features/shard: Do
list_del_init() while list memory is valid

Problem:
shard_post_lookup_fsync_handler() goes over the list of inode-ctx that need to
be fsynced and in cbk it removes each of the inode-ctx from the list. When the
first member of list is removed it tries to modifies list head's memory with
the latest next/prev and when this happens, there is no guarantee that the
list-head which is from stack memory of shard_post_lookup_fsync_handler() is
valid.

Fix:
Do list_del_init() in the loop before winding fsync.

BUG: 1557876
Change-Id: If429d3634219e1a435bd0da0ed985c646c59c2ca
Signed-off-by: Pranith Kumar K <pkarampu at redhat.com>

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