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Revision 609f6187

ID609f61878d1378c3d04602cf1e581a6f57dfae47

Added by me1 over 2 years ago

kernel -- ffs: Do not dereference NULL inodes in ffs_sync_scan1.

ffs_sync_scan1 is a fast callback from vmntvnodescan; it is not called
with vnodes locked. It is possible for an ffs_reclaim to have reclaimed
the vnode in question, NULL-ing out ip, without having removed the vnode
from the per-mount list. If we see a NULL inode, return failure from the
fast callback.

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