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bcachefs: Fix snapshot_t() usage in bch2_fs_quota_read_inode()

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bch2_fs_quota_read_inode() wasn't entirely updated to the
bch2_snapshot_tree() helper, which takes rcu lock.

Reported-by: syzbot+a3a9a61224ed3b7f0010@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-05-05 22:56:54 -04:00
parent 0ec5b3b7cc
commit 8060bf1d83
1 changed files with 3 additions and 5 deletions
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8
fs/bcachefs/quota.c
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@ -560,13 +560,11 @@ static int bch2_fs_quota_read_inode(struct btree_trans *trans,
struct bch_fs *c = trans->c;
struct bch_inode_unpacked u;
struct bch_snapshot_tree s_t;
int ret;
u32 tree = bch2_snapshot_tree(c, k.k->p.snapshot);
ret = bch2_snapshot_tree_lookup(trans,
bch2_snapshot_tree(c, k.k->p.snapshot), &s_t);
int ret = bch2_snapshot_tree_lookup(trans, tree, &s_t);
bch2_fs_inconsistent_on(bch2_err_matches(ret, ENOENT), c,
"%s: snapshot tree %u not found", __func__,
snapshot_t(c, k.k->p.snapshot)->tree);
"%s: snapshot tree %u not found", __func__, tree);
if (ret)
return ret;