CVS commit: src/sys/fs/union

["David A. Holland" <dholland%netbsd.org@localhost>]

Module Name:    src
Committed By:   dholland
Date:           Tue Sep  2 21:46:54 UTC 2025

Modified Files:
        src/sys/fs/union: union_vnops.c

Log Message:
onionfs: Fix deadlock in link

Don't relookup the destination name with the source vnode locked.
This is both an ordering inversion and can lead to finding and locking
another reference to the same vnode if another process does the same
link operation.

See tech-kern posting of 20250902 for further analysis.


To generate a diff of this commit:
cvs rdiff -u -r1.83 -r1.84 src/sys/fs/union/union_vnops.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.