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bcachefs: Check journal entries for invalid keys in trans commit path

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-12-21 00:16:32 -05:00
parent c98d132ed1
commit 5e32914514
2 changed files with 52 additions and 0 deletions
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13
fs/bcachefs/bcachefs_format.h
View File

@ -2172,6 +2172,19 @@ enum {
BCH_JSET_ENTRY_NR
};
static inline bool jset_entry_is_key(struct jset_entry *e)
{
switch (e->type) {
case BCH_JSET_ENTRY_btree_keys:
case BCH_JSET_ENTRY_btree_root:
case BCH_JSET_ENTRY_overwrite:
case BCH_JSET_ENTRY_write_buffer_keys:
return true;
}
return false;
}
/*
* Journal sequence numbers can be blacklisted: bsets record the max sequence
* number of all the journal entries they contain updates for, so that on

39
fs/bcachefs/btree_trans_commit.c
View File

@ -12,6 +12,7 @@
#include "errcode.h"
#include "error.h"
#include "journal.h"
#include "journal_io.h"
#include "journal_reclaim.h"
#include "replicas.h"
#include "snapshot.h"
@ -798,6 +799,27 @@ static noinline int bch2_trans_commit_bkey_invalid(struct btree_trans *trans,
return -EINVAL;
}
static noinline int bch2_trans_commit_journal_entry_invalid(struct btree_trans *trans,
struct jset_entry *i)
{
struct bch_fs *c = trans->c;
struct printbuf buf = PRINTBUF;
prt_printf(&buf, "invalid bkey on insert from %s", trans->fn);
prt_newline(&buf);
printbuf_indent_add(&buf, 2);
bch2_journal_entry_to_text(&buf, c, i);
prt_newline(&buf);
bch2_print_string_as_lines(KERN_ERR, buf.buf);
bch2_inconsistent_error(c);
bch2_dump_trans_updates(trans);
return -EINVAL;
}
static int bch2_trans_commit_journal_pin_flush(struct journal *j,
struct journal_entry_pin *_pin, u64 seq)
{
@ -998,6 +1020,23 @@ int __bch2_trans_commit(struct btree_trans *trans, unsigned flags)
return ret;
}
for (struct jset_entry *i = trans->journal_entries;
i != (void *) ((u64 *) trans->journal_entries + trans->journal_entries_u64s);
i = vstruct_next(i)) {
enum bkey_invalid_flags invalid_flags = 0;
if (!(flags & BCH_TRANS_COMMIT_no_journal_res))
invalid_flags |= BKEY_INVALID_WRITE|BKEY_INVALID_COMMIT;
if (unlikely(bch2_journal_entry_validate(c, NULL, i,
bcachefs_metadata_version_current,
CPU_BIG_ENDIAN, invalid_flags)))
ret = bch2_trans_commit_journal_entry_invalid(trans, i);
if (ret)
return ret;
}
if (unlikely(!test_bit(BCH_FS_may_go_rw, &c->flags))) {
ret = do_bch2_trans_commit_to_journal_replay(trans);
goto out_reset;