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bcachefs: check for backpointers to invalid device

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-11-18 00:16:52 -05:00
parent 3b6ebc94a0
commit debe6965ac
2 changed files with 6 additions and 1 deletions
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4
fs/bcachefs/backpointers.c
View File

@ -59,6 +59,10 @@ int bch2_backpointer_validate(struct bch_fs *c, struct bkey_s_c k,
"backpointer level bad: %u >= %u",
bp.v->level, BTREE_MAX_DEPTH);
bkey_fsck_err_on(bp.k->p.inode == BCH_SB_MEMBER_INVALID,
c, backpointer_dev_bad,
"backpointer for BCH_SB_MEMBER_INVALID");
rcu_read_lock();
struct bch_dev *ca = bch2_dev_rcu_noerror(c, bp.k->p.inode);
if (!ca) {

3
fs/bcachefs/sb-errors_format.h
View File

@ -138,6 +138,7 @@ enum bch_fsck_flags {
x(discarding_bucket_not_in_need_discard_btree, 291, 0) \
x(backpointer_bucket_offset_wrong, 125, 0) \
x(backpointer_level_bad, 294, 0) \
x(backpointer_dev_bad, 297, 0) \
x(backpointer_to_missing_device, 126, 0) \
x(backpointer_to_missing_alloc, 127, 0) \
x(backpointer_to_missing_ptr, 128, 0) \
@ -307,7 +308,7 @@ enum bch_fsck_flags {
x(logged_op_but_clean, 283, FSCK_AUTOFIX) \
x(compression_opt_not_marked_in_sb, 295, FSCK_AUTOFIX) \
x(compression_type_not_marked_in_sb, 296, FSCK_AUTOFIX) \
x(MAX, 297, 0)
x(MAX, 298, 0)
enum bch_sb_error_id {
#define x(t, n, ...) BCH_FSCK_ERR_##t = n,