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authorZhihao Cheng <chengzhihao1@huawei.com>2024-04-10 09:37:47 +0200
committerRichard Weinberger <richard@nod.at>2024-07-12 21:39:17 +0200
commit7efc34b53b3950ad4fc98b5d25210bae80ab0fde (patch)
tree69786d325d64aacbb8370efbf2504f69f078aa87 /fs/ubifs/xattr.c
parentubifs: Remove insert_dead_orphan from replaying orphan process (diff)
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ubifs: Fix adding orphan entry twice for the same inode
The tmpfile could be added into orphan list twice, first time is creation, the second time is removing after it is linked. The orphan entry could be added twice for tmpfile if following sequence is satisfied: ubifs_tmpfile ubifs_jnl_update ubifs_add_orphan // first time to add orphan entry P1 P2 ubifs_link do_commit ubifs_orphan_start_commit orphan->cmt = 1 ubifs_delete_orphan orphan_delete if (orph->cmt) orph->del = 1; // orphan entry is not deleted from tree return ubifs_unlink ubifs_jnl_update ubifs_add_orphan orphan_add // found old orphan entry, second time to add orphan entry ubifs_err(c, "orphaned twice") return -EINVAL // unlink failed! ubifs_orphan_end_commit erase_deleted // delete old orphan entry rb_erase(&orphan->rb, &c->orph_tree) Fix it by removing orphan entry from orphan tree in advance, rather than remove it from orphan tree in committing process. Fixes: 32fe905c17f0 ("ubifs: Fix O_TMPFILE corner case in ubifs_link()") Link: https://bugzilla.kernel.org/show_bug.cgi?id=218672 Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'fs/ubifs/xattr.c')
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