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19337332cc
- To avoid a use-after-free, zfsvfs->z_log needs to be loaded after the teardown lock is acquired with ZFS_ENTER(). - Avoid leaking vnode locks in zfs_rename_relock() and zfs_rename_() when the ZFS_ENTER() macros forces an early return. Refactor the rename implementation so that ZFS_ENTER() can be used safely. As a bonus, this lets us use the ZFS_VERIFY_ZP() macro instead of open-coding its implementation. Reported-by: Peter Holm <pho@FreeBSD.org> Tested-by: Peter Holm <pho@FreeBSD.org> Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com> Signed-off-by: Mark Johnston <markj@FreeBSD.org> Sponsored-by: The FreeBSD Foundation Closes #12717 |
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