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authorJosef Bacik <josef@toxicpanda.com>2020-03-13 11:44:46 -0400
committerDavid Sterba <dsterba@suse.com>2020-03-23 17:01:58 +0100
commitf28de8d8fd376ba57aaed53cdc1a0ba2238e8ebf (patch)
tree001c226f54ef3310d71b4dc011ef442dcd6ecc4f /fs/stack.c
parent1a0afa0ecfc4dbc8d7583d03cafd3f68f781df0c (diff)
btrfs: clear DEAD_RELOC_TREE before dropping the reloc root
The DEAD_RELOC_TREE flag is in place in order to avoid a use after free in init_reloc_root, tracking the presence of reloc_root. However adding the explicit tree references in previous patches makes the use after free impossible because at this point we no longer have a reloc_control set on the fs_info and thus cannot enter the function. So move this to be coupled with clearing the root->reloc_root so we're consistent with all other operations of the reloc root. Signed-off-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: David Sterba <dsterba@suse.com> [ update changelog ] Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/stack.c')
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